.UC SOUTHERN REGIONAL LIBRARY G 000 005 791 9 GIFT OF ■R-* n1 -> \ fl I OPINIONS OF THE PRESS ON WATSON'S PEACTICE OF PHYSIC. The Publishers have great pleasure in submitting the following letter from Professor Cliapman, as well as a few of the notices of the medical press, with which this work has been honoured. Philadelphia, September 27th, 1844. Watson's Practice of Physic, in my opinion, is among the most comprehen- sive works on the subject extant, replete with curious and important matter, and written with great perspicuity and felicity of manner. As calculated to do much good, I cordially recommend it to that portion of the profession in this country who may be influenced by my judgment. N. CHAPMAN, M.D. Professor of the Practice and Theory of 3Icdicine In the University of Pennsylvania, " We know of no work better calculated for being placed in the hands of the student, and for a text book, and as such we are sure it will be very extensively adopted. On every import- ant point the author seems to have posted up his knowledge to the day." — America?i Medical Journal. " In the Lectures of Dr. Watson, now republished here in a large and closely printed volume, we have a body of doctrine and practice of medicine well calculated, by its intrinsic soundness and correctness of style, to instruct the student and younger practitioner, and improve members of the profession of every age." — Bulletin of Medical Science. " We regard these lectures as the best exposition of their subjects of any we remernber to have read. The author is assuredly master of his art. His has been a life of observation and study, and in this work he has given us the matured results of these mental efforts." — New Or- leans Medical Journal. "We know not, indeed, of any work of the same size that contains a greater amount of inte- resting and useful matter. The author is evidently well acquainted with everything appertaining to the principles and practice of medicine, and has incorporated the stores of his well-stocked mind, in the work before us, so ably and agreeably, that it is impossible for the interest of the reader to flag for a moment. That they are well adapted foi such a purpose, all must admit; but their sphere of usefulness may extend much beyond this. We are satisfied, indeed, that no fihysician, well read and observant as he may be, can rise from their perusal without having added argely to his stock of valuable information." — Medical Examiner. "In this volume of the ' Principles and Practice of Medicine,' we have before us a mass of information which is rarely to be found within the boards of a single volume. This is the age ol condensation. Here is bi-ought together mature views of the present state of the science, by a lecturer, acknowledged by all to be of the first order, and that which was spread over 1700 pages of the London edition, we have in about 1100, (of course large pages,) and so cheap that no me- dical reader will hesitate a moment to transfer it from the bookseller's counter to his own table where it should lie constantly before him." — U. S. Gazette. " We know of no systematic work on the Practice of Medicine equal to this. To extensive erudition and natural cleverness, the discrimination and tact of a practical man, personally fami- liar with all he treats of, is added. Besides showing himself a sound pathologist in these pages, he proves that he is an admirable therapeutist. A vein of practical good sense distinguishes every page. The time and patience of the reader are not consumed by idle disquisitions on mooted points of no real utility. The style is agreeable, and we may even say fascinating. To the medical student we consider the work as invaluable, and there are few practitioners, old or voung, who, on reading it, will not be willing to acknowledge their obligations to it." — Saturday 'Post. " The medical literature of this country has been enriched by a work of standard excellence, which we can proudly hold up to our brethren of other countries as a representative of the natu ral state of British medicine, as professed and practised by our most enlightened physicians. And, for our own parts, we are not only willing that our characters as scientific physicians and ■kiiful practitioners may be deduced from the doctrines contained in this book, but we hesitate 2 NOTICES OF Watson's practice. not to declare our belief, that for sound, trustworthy principles, and substantial good practice, it cannot be paralleled by any similar production in any other country. * * * * \ye would advise no one to set himself down in practice, unprovided with a copy." — British and Foreign Medical Ixeview. " We cannot refrain from calling the attention of our younger brethren, as soon as possible, to Dr. Watson's Lectures, if they want a safe and comprehensive guide to the study of practical medicine. "In fact, to any of our more advanced brethren, who wish to possess a commodious book of reference on any of the topics usually treated of in a course of lectures on the practice of physic, or who wish to have a simple enunciation of any facts or doctrines, which, from their novelty or their difficulty, the busy practitioner may not have made himself master of amidst the all-absorb- ing toils of his professional career, we can recommend these lectures most cordially. Here we meet with none of those brilliant theories which are so seductive to young men, because they are made to explain every phenomenon, and save all the trouble of observation and reflection ; here are no exclusive doctrines ; none of those 'Bubbles that glitter as they rise and break, On vain Philosophy's all babbling spring.' But we have the sterling production of a liberal, well-stored, and truly honest mind, possessed of all that is currently known and established of professional knowledge, and capable of pro- nouncing a trustworthy and impartial judgment on those numerous points in which Truth is yet obscured with false facts, or false hypotheses." — Provincial Medical Journal. " We find that, from the great length we have gone in our analysis of this work, we must close our notice of it here for the present, not, however, without expressing our unqualified . approbation of the manner in which the author has performed his task. But it is as a book of ele- mentary instruction that we admire Dr. Watson's work." — Medico- Chirurgical Review. " One of the most practically useful books that ever was presented to the student — indeed a more admirable summary of general and special pathology, and of the application of therapeutics to diseases, we are free to say, has not appeared for very many years. The lecturer proceeds through the whole classification of human ills, a capite ad calcem, showing at every step an ex- tensive knowledge of his subject, with the ability of communicating his precise ideas, in a style remarkable for its clearness and simplicity." — N. Y. Journal of Medicine, cj-c. " The style is correct and pleasing, and the matter worth the attention of all practitioners, young and old." — Western Lancet. " Wc are free to state that a careful examination of this volume has satisfied us that it merits all the commendation bestowed on it in this country and at home. It is a work adapted to the wants of young practitioners, combining, as it does, sound principles and substantial practice. It is not too much to say, that it is a representative of the actual state of medicine as taught and practised by the most eminent physicians of the present day, and as such we would advise every one about embarking in the practice of physic to provide himself with a copy of it." — Western Journal of Medicine and Surgery. " It is an admirable digest of general pathology and therapeutics. As a text book for medical Bchools, it cannot be surpassed, and in no other treatise can practitioners find so concise, and at the same time so complete a summary of the present state of the science of medicine." — Balti- more Patriot. "It is the production of a physician of undoubted talent and great learning, and whose indus- try in performing the most laborious duties of this profession has been well known for a long series of years. * * * Let us not forget to add that the style and general character of the work are peculiarly practical ; and the cases which Dr. Watson has from time to time introduced to illustrate his views, are highly appropriate and interesting, and add much to the value of the work ; and this certainly must be admitted to be one of the great advantages of casting this work in the shape of lectures, in which these cases assuredly appear more fitly, and in which they are introduced more easily and naturally than they could have been had the form of the work been ditferent. " Lastly, we are well pleased to observe that a strong vein of common sense, as well as good tuste, runs through the whole treatise, and sustains both the interest and the confidence of the reader throughout." — Edinburgh Medical and Surgical Journal. " In calling the attention of the profession to the elegant volume recently published by Lea & Blanchard — the lectures delivered at King's College, London, by Dr. Watson — we do not suppose any one at all conversant with the medical literature of the day to be unacquainted with its gene- ral character. Dr. W. delivered these now celebrated lectures during the medical session ot lt<3(J-7. I'hey have been revised by the author, and those who now study these erudite pro- ductions will have them divested of any objectionable matter that might have formerly crept in through inadvertence. There are ninety lectures, fully written, embracing the whole domam of human maladies, with their treatment, besides an appendix particularly remarkable for its rich- ness in important practical information. We could not give even a tolerable synopsis of the sub- jects discussed in this great undertaking without materially entrenching on the limits assigned to other matter. * * * Open this huge well-finished volume wherever we may, the eye imme- diately rests on something that carries value on its front. We are impressedT at once with the strength and depth of the lecturer's views ; he gains on our admiration in proportion to the extent of our acquaintance with his profound researches. Whoever owns this book will have an acknow- ledged treasure if the combined wisdom of the highest authorities is appreciated." — Boston Medical and Surgical Jourfial. LECTURES PRINCIPLES AND PRACTICE OF PHYSIC; DELIVERED AT KING'S COLLEGE, LONDON, BY THOMAS WATSON, M.D., fELLOW OF THE ROYAL COLLEGE OF PHYSICIANS; LATE PHYSICIAN TO THE MIDDLESEX HOSPITAtJ AWD FORMERLY FELLOW OF ST. JOHn's COLLEGE, CAMBRIDGE. THIRD AMERICAN, FROM THE LAST LONDON EDITION. REVISED. WITH ADDITIONS BY D. FKANCIS CONDIE, M.D., 8ECKETARY OF THE COLLEGE OF PHYSICIANS ; AUTHOR OF A TREATISE ON DISEASES OF CHILDREN, ETC. ETC. PHILADELPHIA: BLANCHARD AND LEA, 185G. Entered, according to the Act of Congress, in the year 1845, by LEA AND BLANCHARD, in the clerk's oflBce of the District Court for the Eastern District of Pennsylvania. ' » • « T^^ \^X 100 PREFACE BY THE EDITOR. » The very full and accurate exposition presented by Dr. Watson of the present state of pathology and therapeutics, in reference to nearly all of the diseases embraced in these Lectures, has rendered it unnecessary to augment materially the size of the work by the addition of frequent and extended notes. In regard, however, to a few of the forms of disease more particularly interesting to the American physician, the account S given by the Author will be found somewhat defective, while he has omitted ^o to notice one or two affections endemic in the United States, his lectures being chiefly confined to a consideration of the diseases most prevalent in ^ Great Britain. It is to remedy these deficiencies that the Editor, in pre- paring the present edition, has mainly directed his attention. In the notes •^ he has added to Dr. Watson's lectures on diarrhoea and dysentery,' he has 1^ endeavoured to fill up the very brief sketch presented in the text, of the 'N. chronic forms of those diseases ; he has attempted, also, to supply, in part, r^ the omissions of the Author, by his notes on the history, pathology and * treatment of typhoid pneumonia, remittent fever, &c. ! The intrinsic merits of Dr. Watson's Lectures are sufficient to ensure "^ for them a favourable reception. If, by the few notes he has been induced to append to the present edition, the Editor has succeeded in adding in some slight decree to their value, he will be amply repaid for his labour. CO o I Philadelphia, September, 1845. In passing through the press a new edition of Dr. Watson's Lectures, the Editor has only to remark that he has corrected some few errors which escaped attention in the last, while he has added some additional notes where the subject appeared to require them. Philadelphia, August, 1847. a2 (H) r"^>/i ADVERTISEMENT TO THE FIRST EDITION. The following Lectures were put together, with unavoidable haste, dur- ing the Medical Session of 1836 — 37, in which they were first delivered. They were repeated, with slight variations, for four successive years ; the Author always meditating, but never finding time to accomplish, their thorough reconstruction and revision. They were afterwards printed, to fulfil a rash promise, in the pages of the Medical Gazette : and they are now published, in a collected form, at the request, formally conveyed to him in writing, of many who had heard or read them, including several of his colleagues at King's College. Writing for mere beginners, and without any thought of future publica- tion, the Author took no pains to note autnorities as he went along. He may often, therefore, have used, without acknowledgment, not only the facts and reasonings, but sometimes, perhaps, the very words of others This omission he regrets, but is now unable to supply. Neither has he leisure to correct, if that were desirable, the colloquial and famihar style in which the Lectures were originally composed. Should they attract the notice of any who are no longer in statu pupil- lari, he would request such readers to bear in mind for whom these les- sons were intended. They do not profess to present a formal and complete treatise on the Practice of Physic, much less to exhaust the various subjects upon which they touch. His chief hope is that they may prove useful as a text-book for students. As they are passing through the press, such additions and alterations have been introduced as the Author would have made had he continued to deliver the Lectures orally. Henrietta Street, Cavendish Square, September, 1843. (7) AUTHOR'S ADVERTISEMENT TO THE SECOND EDITION. The dnexpected exhaustion of the former edition of these Lectures within the space of a twelvemonth, has left but little opportunity to the Author, whose leisure is small, for such revision as might render them more worthy of the encouragement they have received. Some errors liave been corrected, but in substance, as well as in form, the Lectures are nearly the same as before. CONTENTS. LECTURE I. InTROSUCTOBT ...^.^ .....^ FAQS 17 LECTURE IL Pathology — meaning of the term. Pathology, general and special. Morbid alterations of the solid parts of the body. Alterations in bulk. Hypertrophy — law of its production — its effects. Atrophy — its causes and consequences. Changes in form. Alterations in consistence. Induration — its various kinds 25 LECTURE III. Softening; its causes and varieties. Transformations of Tissue; Changes of situation — in the Chest, of the Lung, of the Heart — in the Abdomen and Pelvis, Hernia, Intussuscep- tion, Prolapsus 33 LECTURE IV. Morbid alterations of the Fluids, especially of the Blood. Changes in its quantity and distri- bution. General and Local Plethora. Poverty of Blood. Active Congestion — its Phe- nomena — state of the Vessels, as seen by the Microscope. Mechanical Congestion. Pas- sive Congestion. Relations of these forms of Congestion to Inflammations — to Hemorrhages — to Dropsies SB LECTURE V. Different modes of Dying. Pathology of Sudden Death. Death by Anaemia ; its Course, Phenomena, and Anatomical Characters. Death by Asthenia; its Course, Phenomena, and Anatomical Characters. Syncope. Death by Inanition. Death by Apnoea: Death by Coma : their Course and Phenomena, and the Anatomical Characters common to both. Application of the Principles obtained from the investigation of the Phenomena of Sudden death, in elucidating the Symptoms and Tendencies of Disease 48 LECTURE VL Causes of Disease: distinction between predisposing and exciting causes. Enumeration of causes, as connected with the Atmosphere — Food and Drink — Poisons — Exercise — Sleep — Mental and Moral Conditions — Hereditary Tendencies — Malformations. Temperature. Effects of Heat and of Cold 57 LECTURE Vn. Causes of Disease, continued. Laws by which the operation of Cold upon the Bodily Health is regulated. Circumstances that favour its injurious Effects, and respect, first, the Body itself; secondly, the manner in which the Cold is apphed. Modifying influence of certain states of the Mind — of Sleep— of Habit. Means of protection. Influence of the different Seasons. Impurity of the Air. Its influence in the production of Disease [no/el. Heredi- tary tendencies to Disease 68 LECTURE VIIL Symptoms. Their Uses in relation to the Diagnosis, the Prognosis and the Treatment of Diseases. Signs, as distinguished from Symptoms. Pathognomonic, Commemorative, Direct and Indirect Symptoms. Examples of Symptoms as they consist of uneasy Sensa- tions, disordered Functions, or changes of Sensible Qualities 79 LECTURE IX. Inflammation. Its Morbid and its Salutary Effects. Sketch of the Local and Constitutional Phenomena of Inflammation as it occurs in External Parts. Examination of the Symp^ toms of Inflammation ; Pain ; Heat ; Redness ; Swelling. State of the Capillary Blood- Tessels and of the Blood [note] in a part inflamed - 93 (9) 10 CONTENTS. LECTURE X. Inflammation, continued. Buffy Coat of the Blood. Terminations or Events of Inflamma- tion. Resolution — Delitescence — Metastasis. Effusion of Serum. EtTusion of Coagulable Lymph, or Fibrin. Organization of this Lymph. Suppuration. Ulceration 103 LECTURE XI. Mortification, as an event of Inflammation. Inflammatory Fever. Hectic Fever. Typhoid Fcer Modification of Inflammation by differences of Tissue ; Areolar Tissue ; substance of Glands and Solid Viscera ; Serous Membranes ; Synovial Membranes ; Tegumentary Membranes — Skin — Mucous Membranes; Muscular Tissue ; Arteries; Veins; substance of the Brain 118 LECTURE XIL Varieties of Inflammation: Acute and Chronic; Latent ^ Specific. Scrofulous Inflammation. Tubercles. Forms of Tubercles [no^e]. Relative frequency of Scrofulous Disease in different Organs. Signs of the Strumous Diathesis ^ - 124 LECTURE XIIL Cancer; its Species or Varieties. Scirrhus; Encephaloid Cancer; Colloid Cancer. Its mode of Growth and dissemination. Habitudes of the several Varieties. Treatment of Inflammation. Antiphlogistic Regimen. Blood-letting 136 LECTURE XIV. Treatment of Inflammation, continued. Recapitulation. Bleeding. Purgatives. Mercury. Antimony. Digitalis. Colchicum. Opium. Local Remedies. External Cold. External Warmth. Counter-Irritation 149 LECTURE XV. Hemorrhage : — most commonly by Exhalation. Habitual Hemorrhages. Vicarious Hemor- rhages. Idiopathic Hemorrhages. Active and Passive. Symptomatic Hemorrhages. Usual Situations of Hemorrhage. Symptoms and Diagnosis. Principles of Treatment. . 159 LECTURE XVI. Dropsy : its General Pathology. Passive Dropsy ; Cardiac and Renal. Active, Acute, or Febrile Dropsy. Prognosis; and General Principles of Treatment in Dropsies 168 LECTURE XVIL Diseases of the Eye. Catarrhal Ophthalmia. Purulent Ophthalmia of Adults 180 LECTURE XVIH. Purulent Ophthalmia, continued. Gonorrhoeal Ophthalmia. Purulent Ophthalmia of Infants. Strumous Ophthalmia - 190 LECTURE XIX. Strumous Ophthalmia, continued. Recapitulation. Treatment of Strumous Ophthalmia. General Remarks on Conjunctival Inflammations. Iritis: its Symptoms and Treatment Causes of Iritis 199 LECTURE XX. ntis concluded. Rheumatic Ophthalmia. Amaurosis 209 LECTURE XXL Diseases of the Brain and Nervous System. Difficulties of the subject. Short Revievr of some points in the Physiology of the Brain and Nerves. Peculiarity of the Cerebral Cir- sulation. Pressure 220 LECTURE XXII. Symptoms of Cereoral Diseases. Inflammation of the Dura Mater and Arachnoid, from CONTENTS. li external injury ; from Disease of the Bones of the Ear, and of the Nose. Inflammation of the Pia Mater 229 LECTURE XXIII. Acute and general Inflammation of the Encephalon. Period of Excitement. Modes in which the disease may commence. Period of Collapse. Treatment. Delirium tremens. 249 LECTURE XXIV. Delirium Tremens, concluded; treatment [note']. Chronic Inflammation of the Brain. Softening, Suppuration, Abscess, Induration, Tumours in the Brain. . .^ .^ ^ . . 247 LECTURE XXV. Hypertrophy of the Brain [note] ; Atrophy. Acute Hydrocephalus ; Premonitory Signs ; DiSerent Modes of Attack ; Stages of the Disease ; Anatomical Characters ; Causes... 259 LECTURE XXVI. Acute Hydrocephalus, continued. Prognosis and Mortality of the Disease. Treatment ; Blood-letting ; Purgatives ; Cold ; Mercury ; Blisters. Prophylaxis. Spurious Hydroce- phalus. Chronic Hydrocephalus, or Dropsy of the Brain. Shape of the Head and Face. Anatomical Conditions. Symptoms 271 LECTURE XXVIL Treatment of Chronic Hydrocephalus ; Internal Remedies : Mechanical Expedients ; Band- ages. Tapping. Meningitis Encephalica [note]. Symptoms of Spinal Disease. Inflam- matory conditions of the Spinal Marrow. Cerebro-Spinal Meningitis [note] 28^ LECTURE XXVIIL Inflammatory and Structural Diseases of the Spinal Cord, continued. Treatment. Apoplexy. Its General Symptoms and Diagnosis. Different forms of the attacks. Predis- position to Apoplexy — Natural, and accidental. Precursory Symptoms 298 LECTURE XXIX. Apoplexy continued. Symptoms characterizing the Apoplectic State. Pressure the ordinary Physical cause. Hemiplegia. Affection of Involuntary Muscles. Anatomical Characters. Situation of the Clot of Blood. Disease of the Cerebral Blood-Vessels 307 LECTURE XXX. Apoplexy continued. Relations between the Symptoms and the Appearances found in the brain after death. Exciting Causes. Prognosis. Treatment 321 LECTURE XXXL Spinal Hemorrhage. Paraplegia. Facial Palsy and Facial Anaesthesia ; their Symptoms, Prognosis, and Treatment. Other Forms of Local Paralysis, and Local Anaesthesia .... 332 LECTURE XXXII. Tetanus. Its Symptoms and Varieties. Causes. Diagnosis. Pathology. Treatment : Opium ; Blood-letting ; the Warm Bath ; the Cold Bath ....^ ^ 345 LECTURE XXXIIL Treatment of Tetanus continued. Wine ; Mercury ; Purgatives ; Digitalis ; Tobacco ; Musk ; Prussic Acid ; Belladonna ; Carbonate of Iron ; Oil of Turpentine ; Strychnia ; Surgical Expedients ; General Rules. Hydrophobia 355 LECTURE XXXIV. Hydrophobia concluded. Various Questions considered respecting the Disease as it appears in the Human Subject, and respecting Rabies in the Dog. Pathology of tbi* Disiwrder. Treatment. Preven,ive Measures .--.«_ , . . . « ... ,.,.* —^...^ . , 86A 12 CONTENTS. LECTURE XXXV. Epilepsy. Its Symptoms and varieties ; duration and recurrence of the paroxysms ; periods of life at which they commence ; warnings. Efiects of the paroxysms, immediate and ultimate. Pathology. Anatomical characters 379 LECTURE XXXVL Epilepsy continued. Recapitulation. Exciting causes. Simulated epilepsy. Diagnosis. Prognosis. Treatment : during the fit ; during the Intervals ; during the Warnings .... 388 LECTURE XXXVn. Chorea. Symptoms ; Pathology ; Complications ; Causes ; Treatment. Chronic Chorea. Other Nervous Disorders to which the same name has been applied 399 LECTURE XXXVIIL Paralysis Agitans. Mercurial Tremor. Hysteria ; Two Forms of Hysteric Paroxysm ; Diagnosis from Epilepsy; Class of persons most liable to Hysteria ; Diseases apt to be simulated by Hysteria ; Treatment ; Prevention. Salaam Convulsions [note] 410 LECTURE XXXIX. Catalepsy. Ecstasy. Neuralgia; Tic Douloureux ; Sciatica; Hemicrania 424 LECTURE XL. Intermittent Fever. Phenomena of an Ague Fit. Species and varieties of Intermittents. Predisposing causes. Exciting cause. Malaria : known only by its effects ; places which it chiefly infests ; conditions of its production ; its efiects upon the human body ; influence of soils in evolving it 1 435 LECTURE XLL Ague, continued. Speculations respecting its periodicity. Habits and properties of the malaria ; most noxious at night ; lies near the ground ; is carried along by winds; cannot pass across water ; attaches itself to trees ; is diminished by the increase of cultivation and of population. Ultimate effects of the poison on the body. Ague formerly thought salu- tary. Prognosis. Propriety of stopping the disease - • . 447 LECTURE XLII. Treatment of Intermittent Fever ; during the paroxysm ; during the intermissions. Prophy- laxis 457 LECTURE XLIIL Epistaxis. Bronchocele ; Cretinism ; their Phendmena and probable Causes. Medical antf Surgical Treatment of Bronchocele 467 LECTURE XLIV. Cynanche Parotidffia. Spontaneous Salivation. Aphthae; pathology of [rjo/e]. Cynanche Tonsillaris 479 LECTURE XLV. Acute Laryngitis. Symptoms. Treatment ; Blood-letting. Tracheotomy, Mercury, Antu mony. Anatomical Characters of the Disease. Causes. Secondary Laryngitis. QEdema cf the Glottis. Chronic affections of the Larynx 491 LECTURE XLVL Cynancne Trachealis : Symptoms ; Pathology ; Prognosis ; Treatment. Tracheotomy [note]. Child-crowing, or Spurious Croup. Spasmodic Laryngitis [no/e]. Nocturnal periodic Cough [note] . . ..^ ^ - - - ^ - 50S LECTURE XLVn. Diseases of the Thorax. General observations. Dyspnoea. Cough. Methods of exploring the physical conditions of the Chest, by the senses of sight, touch and hearing 517 CONTENTS. 13 LECTURE XL VIII. Catarrh ; its varieties. Acute Bronchitis. Dry sounds attending the Respiration ; Rhonchus and Sibilus ; Moist sounds ; Large and Small Crepitation : how these are produced, and what they denote. Treatment of Acute Bronchitis. Peripneumonia Notha. Sudden Infraction of a large Bronchus 528 LECTURE XLIX. Influenza. Symptoms and progress. Conjecture as to its Cause. Treatment. Hay Asthma. Chronic Bronchitis. Its varieties. Morbid Anatomy of these affections 539 LECTURE L. Hooping-cough : symptoms ; duration ; complications ; pathology; treatment. Pneumonia ; its stages and morbid anatomy; auscultatory signs 552 LECTURE LL Pneumonia, continued ; its general symptoms ; pain, dyspnoea, cough, expectoration. Course of the disease. Prognosis. Treatment. Pneumonia in Children [note] . .^ 564 LECTURE LIL Pleurisy. Its anatomical characters ; false membranes ; liquid effusion ; effects of these upon the shape and contents of the Chest, and upon its healthy sounds. Symptoms of Pleurisy 579 , LECTURE LIIL Pleurisy, continued. Recapitulation of symptoms ; of diagnostic signs. Causes of Pleurisy. Pneumothorax ; its condition, and signs. Treatment of Pleurisy. Empyema. Paracen- tesis Thoracis. Typhoid Pneumonia [note'j ^ 590 LECTURE LIV. Pulmonary Hemorrhage ; its varieties ; its connection with pulmonary consumption, and with disease of the heart. Pulmonary Apoplexy. Prognosis in Haemoptysis. Symptoms Treatment 608 LECTURE LV. Pafmonary Emphysema ; vesicular and interlobular. Anatomical characters of vesicular Emphysema ; physical signs ; general symptoms ; causes ; treatment. Interlobular Em- physema ; its anatomical characters, symptoms, cause, and cure. CDdema of the Lungs. Phthisis Pulmonahs 618 LECTURE LVL Phthisis, continued. Vomicae ; adhesions of the pleurae ; ulceration of the larynx and trachea — of the intestines ; fatty liver ; auscultatory signs of a vomica ; gurgling ; cavernous respiration, pectoriloquy. General Symptoms of Phthisis : cough, expectoration, dyspnoea, pain, hectic fever, diarrhoea, wasting, oedema, aphthae 62tt LECTURE LVIL Phthisis, continued. Diagnosis. Forms and varieties of Phthisis. Ordinary duration. Age at which it is most frequently fatal. Influence of sex, and of occupation. Question of contagion. Treatment, Curability of [no/e] 641 LECTURE LVIIL Melanosis of the Lung ; true, and spurious. Accidental intrusion ot solid substances into the air-passages (J52 B J4 ■ CONTENTS. LECTURE LIX. Diseases of the Heart ; usually partial. Changes in its muscular texture. Mechanism of those changes. Natural dimensions of the Heart. Natural sounds. Modifications of these by disease. Review of the physical and general signs that accompany Cardiac Disease 660 LECTURE LX Diseases affecting the muscular texture of the Heart, and their treatment. Changes to which the valves of the Heart are subject. Effects and diagnosis of those changes. Angina Pectoris - 671 LECTURE LXL Pericarditis ; its frequent connection with Acute Articular Rheumatism. Rheumatic Car- ditis. Anatomical characters of acute inflammation of the pericardium ; of the Endocar- dium. General symptoms. Auscultatory signs. Relations of Carditis with Rheumatic Fever ^ 682 LECTURE LXn. Treatment of Acute Pericarditis and Endocarditis : blood-letting; mercury; blisters. Chro- nic and partial inflammation of the pericardium. Disease of the Aorta. Thoracic Aneu- risms ; their various situations and symptoms ; plan of treatment 697 LECTURE LXHL Diseases of the Veins. Phlebitis ; adhesive and suppurative ; consecutive scattered Abscesses. Treatment of Inflammation of Veins. Effects of the gradual obstruction of large Venous Trunks 707 LECTURE LXIV. Asthma : its nature ; complications ; exciting causes ; and treatment. Diseases of the CEsophagus ; Inflammation of Infants [no/e] ; Stricture; Spasm: Dilatation 716 LECTURE LXV. Diseases of the Abdomen ; sometimes diflacult to identify. Method i>f investigating these diseases ; by the eye, the hand, the ear. Inflammation of the Peritoneum : its symptoms ; and causes. Puerperal Peritonitis. Peritonitis from Perforation -^ 727 LECTURE LXVL Treatment of Acute Peritonitis ; Bleeding, Mercury, Opium. Chronic Peritonitis ; Granular Peritoneum. Ascites; Ovarian Dropsy; Diagnosis of these diseases. Other forms of Abdominal Dropsy 736 LECTURE LXVIL Pathology of Chronic Ascites ; of Ovarian Dropsy. Treatment of these two disorders. In- ternal remedies ; Extirpation of the ovarian sac ; Paracentesis Abdominis 744 LECTURE LXVm. Acute Gastritis ; symptoms ; anatomical characters ; treatment. Acute Gastritis of Infants [note]. Chronic Iriflanmiation of the Stomach; thickening of the Mucous Membrane ; Ulceration : symptoms and treatment of the disorder. Cancer of the Stomach 763 LECTURE LXIX. Hemorrhage from the Stomach : sometimes from a large vessel, usually by exhalation. Idiopathic Hsematemesis. Vicarious HjEmatemesis. Hsmatemesis from gastric disease for injury: Irorn disease in other organs. Melsena. Haematemesis from a morbid state of the blood. General phenomena of Hsmatemesis. Diagnosis. Treatment 76i CONTENTS. 15 LECTURE LXX. Dyspepsia. Physiology of Digestion. Symptoms of Dyspepsia. Treatment and Prevention, Dietetic and Medicinal 774 LECTURE LXXI. Enteritis : its symptoms ; causes ; treatment. Mechanical occlusion of the Intestinal Tube. Colic. Colica Pictonum ; its symptoms, complications, treatment, and prevention 784 LECTURE LXXIL Diarrhoea. Chronic Diarrhoea [notej. Sporadic Cholera. Epidemic Cholera. Cholera Infantum [note] 798 LECTURE LXXIIL Dysentery: Morbid Anatomy [note] ; Chronic [notty Diarrhoea Adiposa. Intestinal Con- cretions. Worms 814 LECTURE LXXIV. Entozoa, continued. Hydatids. Trichina Spiralis. The Guinea Worm. Strongulus Gigas. Origin of Entozoa. Question of Spontaneous Generation. General Symptoms of the presence of Intestinal Worms, Particular symptoms, and remedies, of the common Round Worm, of Thread Worms, of Tape Worms 829 LECTURE LXXV. Diseases of the Liver. Acute Inflammation. Abscess of the Liver. Causes and Treatment of Acute Hepatitis. Chronic Hepatitis. Jaundice. Its symptoms, causes, species, and pathology [note'] 841 LECTURE LXXVL Treatment of the various species of Jaundice. Diseases of the Gall-bladder ; of the Spleen ; of the Pancreas. Diseases of the Kidneys. Nephritis and Nephralgia. Phenomena constituting a "fit of the Gravel." Dillerent kinds of Gravel. Diseased states of the UTine. Description and Remedies of the Lithic, Pliosphatic, and Oxalic Diathesis 854 LECTURE LXXVIL Suppression of Urine. Diabetes : Qualities of the Urine ; symptoms ; anatomical appear- ances ; general pathology of the disease ; treatment. Diuresis 866 LECTURE LXXVIII. Albuminous Urine. Means of detecting the Albumen. What it imports. Anatomical characters of Bright's Kidney. Symptoms to which this renal disease gives rise. Nature of the Affection ^77 LECTURE LXXIX. Anasarca ; its consideration resumed. Distinction of Chronic General Dropsy into Cardiac and Renal. Characters and signs of each of these varieties. Treatment 88T LECTURE LXXX. Chylous Urine. Haematuria ; its diagnosis, general and particular ; Local Disorders of the Urinary Organs on which it depends ; treatment. Abdominal Tumours 897 LECTURE LXXXL Acute Rheumatism ; symptoms ; varieties ; treatment. Chronic Rheumatism ; phenomena , plan of cure. Gout : description of a paroxysm ; progress of the disease ; general state of the health in gouty persons ; causes of the disease ; diagnosis between Gout and Rheumatism 906 16 CONTENTS. LECTURE LXXXII. Pathology of Gout. Prognosis. Prejudices respecting the disease. Treatment : during the paroxysms ; during the intervals. Cutaneous diseases 91'1 LECTURE LXXXin. Exanthemata. They are contagious ; sometimes epidemic. Period of the eruption ; period of incubation. Theory of contagious Febrile Diseases. Continued Fever 925 LECTURE LXXXIV. Continued Fever, continued. Phenomena of the second week ; Delirium, an Eruption, DiarrhcEa : of the third week ; Recovery, or death in the way of Coma, of Apnoea, of Asthenia. Symptoms that usher in those modes of death ; morbid changes found after them °3' LECTURE LXXXV. Varieties of Continued Fever. Its causes, exciting and predisposing. Prophylaxis 946 LECTURE LXXXVL Continued Fever, concluded. Treatment. Bilious Remittent Fever [note]. Small-pox. Its essential symptoms. Distinction into discrete and confluent. Periods and modes in which it proves fatal o . 957 LECTURE LXXXVn. Small-pox, continued. Inoculation. Vaccination. Their comparative advantages. Treat- ment of Small-pox .-^ 978 LECTURE LXXXVIIL Chicken-pox. Measles. Scarlet Fever 991 LECTURE LXXXIX. The Plague. Erysipelas. Erysipelas in Infants [no/e]. Erythema Nodosum. Urticaria. Prurigo. Scabies 1004 LECTURE XC. Herpes ; Eczema ; Pompholix ; Lepra ; Psoriasis ; Impetigo ; Boils ; Carbuncle ; Purpura ; Scurvy. Conclusion of the Course 1017 Vkv^x ^ 1031 LECTURES PEINCIPLES AND PRACTICE OF PHYSIC. INTRODUCTORY LECTURE. Gentlemen : — In approaching any new course of systematic inquiry, there are certain points concerning which the inquirer should always be careful to satisfy himself. He should comprehend, distinctly, what it is that he proposes to learn ; its subject-matter, and its objects : he should consider whether he is about to adopt the most easy, direct, and effectual means for obtaining his purpose ; and whether he is qualified, by the possession of the requisite preliminary information, for pursu- ing his inquiries with intelligence and profit. To these points, and to some others, as they are connected with the duties with which I have been entrusted in this col- lege, I wish briefly to direct your attention on the present occasion. It will be my endeavour to furnish you, at the outset, with clear notions of the nature and the ends of that branch of study upon which you are now about to enter; to explain why it is taught, and how far it may be taught, by oral discourses ; to point out to you what may reasonably be expected from me, and what, to render my attempts prosperous, will be required on your parts. Something also it is expedient you should know beforehand respecting the general order and arrangement of the course ; and a short explanatory comment upon some of the terms that we shall constantly be employing, will clear the way for the succeeding lectures, which forming, more strictly than the present, a part of the series, will also be more strictly didactic in their character. The subject of our study is that wonderful thing, the animal body — and more par- ticularly the human body; its construction and qualities; its actions and its suffer- ings ; its derangements ; its decay. In this study, which affects the mind with a strong feeling of curiosity, not un- mixed with awe, you have already advanced a certain way : for you have observed the outward form and configuration of the body ; examined its internal composition and structure ; and learned what is known of its various endowments, the working and the uses of its several parts. This amount of knowledge was indispensable to j'our further progress. But it forms a portion only of what you assemble here to learn : or rather it is the neces- sary preparation for that ulterior knowledge which it is your main purpose to acquire. The sublimer speculations springing naturally from the researches in which you have as yet been engaged, have not, I trust, been unregarded. You cannot have looked into the mechanism of that intricate but perfect work, — you cannot have con- templated its fullness of exquisite contrivance, its endless examples of means adjusted to ends; its prospective expedients against future needs, its compensations for inevi- table disadvantages, its direct provisions for happiness and enjoyment, — without receiving the profoundest conviction of the being and the attributes of its Maker. Il is upon human anatomy that Paley, in his unrivalled argument for Natural Theology, " takes his stand ;" and sixteen centuries before him, Galen !.ad felt that, in writing 3 b2 (17) 18 INTRODUCTORY LECTURE. his aniUomical treatises, he was composing a hymn to the Deity ; that a declaration so plain of the wisdom, the power, and the goodness of God, was an act of piety and praise. But beyond, though not above, these higher objects of a diligent inves- tigation of man's bodily fabric, we have another and still a nobler end; and it is my business to take you one step nearer to that end. Hit} erto you have been told of structure and of function. Henceforward our theme must be of health and of dis- ease. Of health, that we ma)"^ understand disease; of disease, that we may, under Providence, restore health. Our objects are to preserve the one ; to prevent, remove, or mitigate the other. What then do these contrasted terms denote? Health we regard as a standard condition of the living body. But it is not easy to express that condition in a few words, nor is it necessary. My wish is to be intelligible rather than scholastic; and I should probably puzzle myself as well as you, were I to attempt to lay down a strict and scientific definition of the term health. It is sufficient for our purpose to say, that it imphes freedom from pain and sick- ness ; freedom also from all those changes in the structure of the body that endanger life, or impede the easy and effective exercise of the vital functions. It is plain that health does not signifj^ any fixed and immutable condition of the body. The standard of health varies, in different persons, according to age, sex, and original constitution ; and in the same person even, from week to week, or from day to da}', within certain limits it may shift and oscillate. Neither does health necessarily imply the integrity of all the bodily organs : it is not incompatible with great and permanent alterations, nor even with the loss, of parts that are not vital ; as of an arm, a leg, or an eye. If we can form and fix in our minds a clear conception of the state of health, we shall have no difficulty in comprehending what is meant by disease, which consists in some deviation from that state : some uneasy or unnatural sensation of which the patient is aware ; some embarrassment of function perceptible by himself, or by others; or some unsafe, though hidden condition, of which he may be quite uncon- scious : some mode, in short, of being, or of action, or of feeling, different from those which are proper to health. I use the word disease generically. Various terms in our language bear nearly the same meaning, and endeavours have been made to appropriate some of these more distinctively. Thus the word disorder has sometimes been apphed to simple derangements of function, where no alteration of structure is seen, or can reasonably be inferred to exist ; while the term disease has been restricted to maladies, which are attended with appreciable change of texture, or which run a short and definite course. I see no great utility, but, on the contrary, some risk of confusion, in tying ourselves rigidly down to such distinctions: indeed, we cannot always make them. During life it is often no easy thing to determine .i|jhether the parts, of which the functions are disturbed, preserve their integrity of structure or not : and even when the peccant organ is placed before our eyes after deam, and the most careful scrutiny fails to discover in it any fauhiness of texture, there may still be ground for suspect- ing that some material change, too subtle for detection by our senses, may have been wrought in its finer and more delicate orsfanization. I shall take care to point out to you, as we go along, the cases in which we can trace organic change, and the cases in which we cannot ; but, for the sake of simplicity, I shall call all deviations irom the healthy standard, whether of function or of structure, by the generic term disease ; and to avoid the perpetual and tiresome recurrence of the same word, I shall not scruple to employ the several terms disorder, complaint, malady, distemper, illness, as its synonyms. The number of these deviations from the standard of health, (in other words, the whole number o( diseases,) if we include all their differences in Idnd and in degree, is scarcely calculable ; and the first thing requisite towards investigating the laws that govern their phenomena, is, that we should break them into groups, and dispose them according to some principle of order. Now, there are various methods in which this first broad classification of diseases miffht be framed. INTRODUCTORY LECTURE. ' 19 The most cursory examination of the animal economy suffices to show that it is made up, not merely of separate parts, but of several distinct systems. There is one set of organs foi the mechanical circulation of the blood ; there is an apparatus expressly designed for the repeated exposure of the blood to the air ; a system for regulating the movements and the feehngs of the body; another for receiving, pre- paring, and appropriating its nourishment ; another for the elaboration of matters that are useful or essential to its functions ; another for carrying off its impuritiqs, and for removing its superfluous or effete materials ; and another for the continuance of the species. Now each of these systems is liable to changes of structure and interruptions of function, peculiar to itself; and these peculiarities must be taken into account, what- ever may be the order adopted in treating of diseases in detail. But I shall not divide the subject, as some have done, into diseases of the circulating system — dis- eases of the respiratory system — diseases of the nervous system — and so on ; for this, among other reasons, that there are many forms of disorder that effect all these systems in common, or simultaneously, and comparatively few that are strictly con- fined to any one of them. Neither, in the lectures which I am about to commence, shall I classify diseases according to the several tissues of which the animal frame is composed. In speak- ing of diseases in general, it will, indeed, be both proper and necessary to explain in what manner the same morbid process may be modified by the nature of the special tissue affected. But as the entire body is more or less penetrated and pervaded by the intermixture of several of these tissues, so no useful nor lucid arrangement of diseases could be founded on this basis. Nor shall I attempt to construct a nosological system by grouping together certain sets of symptoms, and calling each set, in its collective form, a disease. To say the truth, I shall consider convenience and usefulness, in frammg my plan, rather than an appearance of scientific precision; and if I make one principle of arrangement more prominent than another, it will be that which relates to the anatomy of regions, — the place and situation of organs. At the same time, I shall not omit to borrow in part from some of those other methods to which I have just been referring. Before, however, we treat of the nahire of particular diseases, it will be requisite to give some general account of the different waj-s in which the various parts of the body are liable to be altered in structure, or disordered in function ; and before we speak of the signs of particular diseases, it Avill be proper to take a general view of symptoms, and of their ascertained relations with the several forms of altered struc- ture : for doubtless you are aware that, although diseases are not constituted by symptoms, they are, in the living body, disclosed by symptoms. Sometimes the symptoms are outward signals which alone reach our senses, and through which internal changes declare themselves ; and we then have to decipher and to interpret those signals. Sometimes we see the morbid changes themselves on the surface of the body, or in parts within our ken. Some internal changes we can appreciate as surely by the touch, or by the sense of hearing ; and of some we infer the existence from alterations in the chemical or in the sensible qualities of the natural excretions. After death, diseases are often to be traced by visible changes of structure in the internal parts of the body. These changes are extremely interesting, as illustrative of morbid processes : they throw light upon what is past ; they afford some guidance for the time to come. But, for obvious reasons, those signs which reveal diseases during life are, practically, of chief moment. In trutli, the great object of our art is to prevent or postpone the disclosure of the others. The instruction afforded by the dead body comes too late to be of use in that particular case. I have already intimated that the morbid physical conditions irom which the symp- toms flow, are not always to be detected, either before or after dissolution. Neither, when they are detected, is their connection with the symptoms always evident.^ Besides inquiring into the modes in which the various organs and textures of the body may be spoiled, and into the signals or symptoms by which the presence of disease may be ascertained, it will \^ fcypedient to premise something, in a genen* 20 INTRODUCTORY LECTURE. manner, of the causes of disease, both with a view to its cure, and, what is much better, to its prevention. We shall also find it very useful to institute a short inquiry into the different ways in which death may take place — the different processes of dying. There is one morbid condition or process, to which all parts of the body are liable, and which contributes so largely and so frequently to alterations both of tex- ture and function, that it claims our especial attention when discussing the more general facts and doctrines of pathology : I allude to that change, or series of changes, which we comprehend under the term injlammation. It will be necessary, therefore, in the preliminary part of the course, to give a general account of inflammation ; and this account must chiefly be drawn from those of its phenomena which are most famihar to us — which we can see and handle; those which we witness when the disorder is seated in or near the surface, in the skin, in some of the mucous membranes, or in the subjacent areolar tissue. Then we shall pursue the examination of its peculiar phenomena as they are presented in the other tissues of the body — the mucous, serous, fibrous, parenchymatous, muscu- lar, and nervous tissues ; and here the general principles of treatment applicable to inflammation may be laid down, with the modifications required according to the tissues interested. In this part of the course may also be conveniently discussed the modifications ot inflammation, and of morbid conditions generally, by the influence of certain diathe ses, or peculiar dispositions of the body. Some constitutional morbific tendencies we shall find to be innate or hereditary ; such are the scrofulous and the cancerous dispositions : others, again, are plainly acquired, as that in which the whole system is tainted for a longer or shorter period by the venereal poison. Hemorrhages, also, and serous accumulations, or dropsies, as they are liable to occur in all parts of the body, require to be treated of generally, before they pass under our notice in the hst of particular maladies. There are certain facts and rea- sonings common to all inflammations, to all hemorrhages, to all dropsies. By com- bining these "generalities" into one comprehensive statement, we help the memory, avoid needless repetitions, and find room for the exposition of principles. Diseases themselves, in the mass, are sometimes distinguished according as they are local, or general. Taking these epithets in their popular sense, we should say that local diseases are those which occupy a definite portion only of the body ; general diseases, those which pervade the whole body. But let us endeavour to obtain clear notions upon these points. Certainly there are many diseases which, occupying a definite portion onl}'- of the body, leave all the remaining parts, and the system at large, healthy both in texture and in function. Such diseases we have no hesitation in calling local. Again, there are many other diseases which, occupying a definite portion only of the body, yet occasion a manifest and serious disturbance in the functions of various other parts, and (it may perhaps be said) of the whole system. Inflammation of a small portion of the frame may give rise to much secondary or symptomatic fever, but here also we properly speak of the disease as being local ; the secondary' general disorder resulting from the local and primary, following it in point of time, and sub- siding upon its cessation. But there are still other forms of disease which show themselves, not like inflam- mation now in this and now in that part, but in many or most parts of the body at the same time. I will take the complaint called purpura, characterized by the uni- versal appearance of purple spots, as an example of what I mean. It is in truth a hemorrhage afl^ecting many or all the tissues of the body simultaneously. For this reason it is commonly regarded as a general disease. But if we look somewhat closer into the matter, we shall, I think, perceive that most, if not aU, of those which have been thus reputed general, are, in fact, reduci- ble to the class of local diseases. The fluids are as much parts of the body as the »ohds ; and if it be true, as I believe it is, that the essential and primary change in purpura is a change in the blood, its characteristic phenomena will be apt to present INTRODUCTORY LECTURE. 21 themselves wherever there is blood circulating — that is, throughout the whole syj- tem. The disease is local, inasmuch as its original seat is in that particular fluid, the blood : it appears to be general, because the morbid blood is everywhere present. The same observations apply to a large class of febrile contagious diseases ; to that state of the general system which is sometimes called anaemia ; also to certain spasmodic affections, where the seat of the actual disorder is in the whole nervous system. What are called general diseases, therefore, are those in which the whole of some one system that pervades the entire body happens to be similarly deranged. Whe- ther diseases can ever be truly called general in any more strict or absolute sense than this, is much to be doubted. I have mentioned dropsy as a malady which, like hemorrhage or inflammation, may occur in various parts of the body separately. It may also extend at once to all parts capable of receiving and retaining serous effusions : i. e., besides filhng the large serous cavities, the effused fluid may occupy the universal areolar tissue. But even this apparently general dropsy will be found, upon careful investigation, to resolve itself, in most cases at least, into local disease within the thorax, or the abdomen. The diseases which, in the sense now explained, may be called general, I shall arrange among the diseases of those parts of the system from which they have been ascertained, or may be presumed, to arise. The first part, then, of the course will embrace an outUne of general pathology, with an especial reference to those morbid conditions which fall to the care of the physician. In its relations to surgery and to midwifery, pathology will be more particularly taught by the respective professors of those distinct though kindred departments of medicine. Do not, however, imagine that I take no interest in these, or that there can be any thing different in the principles upon which the several branches of pathological knowledge are founded. The truth is, that you cannot, if you would, separate the one from the other. You can neither understand what may be called medical, without learning much which as strictly belongs to surgical pathology ; nor can you be ignorant of either, without being in many important respects deficient in the other also. But the open field of pathology is of wide extent, and although we may, and must, survey the whole, yet its artificial divisions, its enclosures and allotments, will be cultivated best, and most improved, by a division of labour. Afterwards, separate diseases are to be described and considered ; all such, at least, as admit of being individuahzed, or presented under a definite shape. And here, I repeat, I shall chiefly pursue an anatomical order, as being comprehensive and inar- tificial, and as tending to facilitate diagnosis. The diseases of parts which lie near each other are the most liable to be confounded. I shall begin, therefore, with the diseases of the parts that appertain to the head and spinal cord, and then proceed in succession to those of the parts belonging to the neck, the thorax, and the abdomen ; to those of the joints, the muscles, and the skin. I shall not hesitate, however, to deviate from this order, whenever, by doing so, I can promote your convenience or advantage. With that portion of the course which relates to particular diseases, I shall also interweave certain pathological considerations, applicable not so much to the whole body as to the several great systems of which it is made up. Thus, when I come to the brain, I shall speak of the functions pecuhar to the nervous system, and of the obstructions and disturbances to which those functions are obnoxious, by way of preface to a detailed examination of the various afflictions of the several parts of that system. Before discussing the diseases of the chest, I shall bring before you, in a general view, the manner in which the great functions of respiration and of circulation are liable to be impeded, or otherwise disordered. As preparatory to the consideration of the diseases of the abdomen, I shall treat, in the same way, of the function of nutrition; and of waste, which implies an interruption of those functions. Still ihere would remain certain diseases, which would not necessarily find a 22 INTRODUCTORY LECTURE. place m this arrangement, inasmuch as their seat is uncertain or only guessed at. Ague is one of these. Cholera, perhaps, another. It is quite unimportant where- abouts in the course such maladies are considered. I feel no concern about any imputations of imperfect or clumsy arrangement with which the plan that I propose to adopt may appear chargeable. I had rather not be cramped and hampered by attempting what abJer heads than mine have failed to achieve, and what, in truth, I beHeve, in the present state of our science, to be impossible, a complete methodical system of nosology. My object will be to furnish as much instruction and informa- tion as I can, in the way that seems most likely to be practically useful to you. Ague I shall take leave to include among the disorders of the nervous system ; and with it, the important subject of malaria will necessarily engage much of our attention. The great question of contagion I shall consider in connection with continued fever, which I rank among that remarkable class of diseases, the contagious exan- themata of Cullen. Of sympathetic and of hectic fever, I must opeak when upon the subject of inflammation. This, then, is a sketch of the method I propose to follow. In the earlier lectures, with the general pathology, I shall endeavour to lay down principles. To these principles I shall continually refer, as occasions offer, both in those prefatory remarks with which I purpose to introduce the diseases belonging to the several great sys- tems that contribute to form the body ; and also in what I shall subsequently have to say concerning those diseases themselves in detail. In this way I hope to com- bine the advantage of repetition, which was the peculiar advantage of two short courses in a season, with that of greater completeness, which forms the recom- mendation of a single extended course. The same great advantage of repetition — or I should rather say of recapitulation — will be further aimed at in the stated exa- minations of the class. Such being a summary of the topics to be embraced in the ensuing series of lectures, and of the order in which I hope to take up those topics, it seems proper that I should now say a few words in explanation of the scope and objects of the course. The prospectus informs you that it will comprehend the Principles and Practice of Physic. What are the true import and promise of these words? By ihc principles of medicine are meant those general truths and doctrines which have been ascertained and estabUshed, slowly, indeed, and irregularly, but still with considerable precision, by the continued observation of attentive minds through- out the entire progress of medicine as a science. These principles I profess to teach you. The practice of medicine, or the particular application of those general facts and doctrines I shall describe to you ; but I cannot profess to teach it in this room : nor can you learn it, except in a very imperfect sense, from my description of it. Ft is the science that I shall here endeavour to unfold. Skill and facihly in turning that science to useful purposes I am unable to impart. These are qualities that do not admit of being communicated from one mind to another. The practice of physic, like every other practical art, is to be learned by its repeated exercise ; by habit ; by carrying its various acts into direct effect again and again ; or, if they happen to require no manual dexterity, by looking on, and seeing them done again and again. There is this capital difference, however, between the art of healing and some other arts : that the blunders of early attempts may be both grievous and irremediable — may hurt or spoil the goodly and precious machine they are intended to repair. There is this also peculiar to our art — that it proceeds upon observations made at the very time when its exercise is wanted ; and that it requires skill in ob- serving as well as skill in acting. You will find what, perhaps, previously to posmve trial, you might not suspect, that the senses — the eye, the ear, the touch — nowever sharp or delicate they may naturally be, require a special course of training and education before their evidence can be trusted in the investigation of di>^ease. I do not know that these views are capable of being rendered plainer by illustration ; I'or you must have observed a similar distinction between the science and the art in f INTRODUCTORY LECTURE. 23 various other branches of human knowledge. The principles of navigation may- be thoroughly comprehended by a person who scarcely knows a rudder from a cable, and who would not be trusted, nay, who would not trust himself, with the conduct of the simplest boat. A man may master tlie beautiful science of astronomy — may acquire the power of working upon paper its sublimest and most abstruse problems — and yet remain in complete ignorance of the method of adjusting and using a telescope, and unable to ascertain for himself the position or the movements of a single star. But place such a person night after night in an observatory — let him notice and imitate the proceedings of some one already skilled in examining the phe- nomena of the heavens — and he will soon acquire the requisite tact and facility him- self. Just so it is with that branch of knowledge with which we are concerned. It is in the wards of a hospital, or in the domestic chamber — it is among the sick and the dying — and there alone — that you can either thoroughly or safely learn to prac- tise physic. In what, then, you may fairly ask, consists the value or the use of lectures on the practice of physic, if the practice of physic cannot be taught by lectures ? The main object of systematic lectures, explanatory of the principles, and descrip- tive of the practice of medicine, is to prepare the hearer for observing, to the best advantage, the actual phenomena of disease, and the power of remedies over it. They are intended to fit him for seeing with intelligence — to enable him to read, and understand, and interpret, the book of nature when it is laid open before him — in short, to qualify him for clinical study. One man shall travel into a foreign land, knowing nothing beforehand of its scenery or its climate, of its natural productions, its manufactures, or its works of art, and ignorant alike of the manners, customs, history, laws, and language of its inhabitants ; another shall visit it after having fur- nished his mind Avith information on these subjects by reading, and by conversing with men who have already passed over the same ground. Supposing the visit to be limited in each case to a certain, but not long period of time, and I need not ask your opinion as to which of these travellers will reap the greatest harvest of enjoy- ment and of profitable knowledge from his journey. Not less striking is the dif- ference, in point of instruction and of interest, perceived by different students, upon their admission to the bedsides of the sick, according as they have been well or ill prepared for the multiform spectacle of bodily suffering then first displayed before them. There are persons, indeed, who seriously, and I make no doubt in perfect good faith, warn the student against bringing to the contemplation of disease any pre- conceived opinions ; who tell him that he must come with a free and unprejudiced mind, and see, and note, and judge of all things for himself. I also would have him exercise, and ultimately abide by, his own judgment ; but surely if every man were to depend upon his own unassisted observation for his knowledge of disease, every man would be marvellously ignorant, and the science of medicine would stand still, or cease to be. " If no use be made (says Dr. Samuel Johnson) of the labours of past ages, the world must remain always in the infancy of knowledge." In truth, a person who, without any previous information concerning diseases, should betake himself to a hospital with the design of impartially and resolutely investigating their phenomena, such a person, however clear and strong his intellect might be, would find himself, for a long time, more puzzled than instructed by what he saw around him He would be perplexed by the shifting and seemingly contradictory characters presented by the same malady in different patients ; or in the same patient at dif- ferent times ; and not less so by the outward resemblance of disorders essentially un- like. He could not but be confused by the multitude of symptoms that crowded upon his attention on every side ; and at a loss to distinguish important facts from those which, for the chief ends of his pursuit, were trivial, or useless. The business, therefore, of a lecturer upon the Principles and Practice of Medi- cine, or, as it is sometimes worded, the Nature and Treatment of Diseases, is first to fix upon some order in Avhich to treat of the various subjects comprised in hi? course. The simpler and less artificial his arrangement, the better. The chief use of this classification is to facilitate the recollection of particular facts ; and I hava already told you that if I can distribute and connect the multifarious forms of diseasti 24 INTRODUCTORY LECTURE. in such a manner as that they shall appear plain to your understanding, and take a secure hold upon your memory, I shall not trouble myself nor you with a vain search after that phantom — a perfect methodical nosology. " In all such classifications," writes Lord Brougham, "we should be guided by views of convenience rather than by any desire to attain perfect symmetry ; and that arrangement may be best suited to a particular purpose which plants the same things in one order, and separates them and unites them in one way, when an arrangement which should dispose those thmgs differently might be preferable, if we had another purpose to serve." Having settled this framework of his discourses, the next aim of the lecturer must be to collect and arrange from the voluminous and bewildering records of medicine, and from the necessarily more slender stores of his personal experience, whatever it may seem of consequence that his hearers should know concerning each distinct form of disease, as it comes before them for consideration : to state all the facts which are well ascertained, and which tend to explain its symptoms, to elucidate its origin, to identify its nature, to direct its treatment, to accomplish its prevention : to sift the true facts from the false, the important from the trivial, the essential from the acci- dental : to analyze the relations of these facts, and ascending from particulars to generals, to point out those great principles and precepts which constitute the keys both to the knowledge and to the management of all diseases of the same kind. It may even sometimes be his duty to notice and discuss mere theoretical opinions ; to express his own sentiments upon disputed or undecided questions ; and to admonish his audience against the danger of being led away by ingenious refinements, by the speciousness of novelty, or the boldness of speculation, from the more secure and settled results of careful observation improved by patient thought. These duties of a lecturer on medicine are metaphorically, but aptly, expressed in the following passage from Lord Bacon : — " Formica colHgit, et utltur, ut faciunt empirici ; aranea ex se fila educit, neque a particularibus materiam petit, ita faciunt medic speculativi ac mere sophistici ; apis denique ca^teris se melius gerit. Ha3c indigesti e floribus mella colligit, deinde in viscerum cellulis concocta maturat, iisdem tamdiu insudat, donee ad integram perfec- tionem perduxerit." I may venture to paraphrase it thus : — The lecturer must not be the ant, collecting all things indiscriminatdy from all (juarters, as provender for his discourses ; Nor the spider, seeking no materials abroad, but spinning his web of speculative doctrine from within himself; But rather the bee, extracting crude honey from various flowers, storing it up in the recesses of his brain, and submitting n to the operation of his internal faculties, until it be matured, and ready for use. Such, gentlemen, are the main objects which I shall endeavour to keep steadily in view during the series of lectures I am about to commence ; and I should ill deserve the chair I have the honour to occupy, if I did not feel the great responsi- bility under which I speak to you. The subjects with which we have to deal are not niatters of mere speculative curiosity or intellectual amusement — to be taken up to-day and dismissed perhaps with unconcern to-morrow — but they involve ques- tions of life and death. The opinions you are now to form or to embrace, are for the most part the opinions upon which in after Hfe you will confident!}'' and con- stantly be acting. The comfort or the misery of many families may probably hang upon the notions that each of you will carry from this place. Therefore it is that I feel myself to be engaged in a very serious undertaking. Doctrines and maxims, good or bad, flow abroad from a public teacher as from a fountain, and his faulty lessons may become the indirect source of incalculable mischief and suffering to hundreds who have never even heard his name. These reflections fill my mind with an almost painful sense of the obligation imposed upon me, by my present office, of closely sifting the facts, and of carefully examining the principles to be derived from "those facts, which I propose to employ for your instruction and cruidunce PATHOLOGY. 25 But amid all the responsibilities, gentlemen, both of teacher and of learner, the profession which you and I have chosen, or Aviiich circumstances have prescribed to us, is a noble profession, and worthy the devotion of a hfetime. If you fit your- selves now for its high functions, and pursue it hereafter in earnestness and truth, it will probably conduct you to an honourable competence, and it will assuredly prove a salutary school of mental and of moral discipline. Trials, no doubt, belong to it, and difficulties ; but it has also privileges and immunities peculiar to itself. Afford- ing ample scope and exercise for the intellect, it is conversant with objects that tend to elevate the thoughts, to chastise the feehngs, and to touch the heart. I have already reminded you how it brings beneath our minute and daily notice that most remarkable portion of matter, which is destined for a season to be the tabernacle of the human spirit, and which, apart from tho*^ singularly interesting thought, excites increasing wonder and admiration the more closely we investigate its marvellous construction. The sad varieties of human pain and weakness with which our daily vocation is familiar, should rebuke our pride, while they quicken our charity. To us are entrusted, in more than ordinary measure, opportunities of doing good to our afflicted fellow-creatures — of showing love towards our neighbour. Let us bev^rare how we idly neglect, or selfishly abuse, a stewardship so precious, yet so weighty. The profession of medicine, having for its end the common good of mankind, knows nothing of national enmities, of political strife, of sectarian dissensions. Disease and pain the sole conditions of its ministry, it is disquieted by no misgivings con- cerning the justice and honesty of its client's cause ; but dispenses its pecuhar benefits, without stint or scruple, to men of every country, and party, and rank, and religion, and to men of no religion at all. And like the quality of mercy, of which it is the favourite handmaid, "it blesseth him that gives and him that takes;" read- ing continually to our own hearts and understandings the most impressive lessons, the most solemn warnings. It is ours to know in how many instances, formino- indeed a vast majority of the whole, bodily suffering and sickness are the natural fruits of evil courses ; of the sins of our fathers, of our own unbridled passions, of the malevolent spirit of others. We see, too, the uses of these judgments, which are mercifully designed to recall men from the strong allurements of vice, and the slumber of temporal prosperity; teaching that it is good for us to, be sometimes afflicted. Familiar with death in its manifold shapes, witnessing from day to day its sudden stroke, its slow but open siege, its secret and insidious approaches, we are not permitted to be unmindful that our own stay also is brief and uncertain, our opportunity precarious, and our time, even when longest, very short, if measured by our moral wants, and intellectual cravings. Surely, gentlemen, you will not dare, without adequate and earnest preparation, to embark in a calling like this ; so capable of good if rightly used, so full of peril to yourselves and to society if administered ignorantly or unfaithfully. And even when you have made it, as you may, the means of continual self-improvement, and the channel of health and ease to those around you, let not the influence you will thus obtain beget an unbecoming spirit of presumption ; but remember that, in your most successful efforts, you are but the honoured instruments of a superior power — that, after all, "It is God who healeth our diseases, and redeemeth our life from destruction." LECTURE II. Pathology — meaning of the term. Pathology, general and special. Morbid alterations of the solid parts of the body. Alterations in bulk. Hypertrophy — law of its production — its effects. Atrophy — its causes and consequences. Changes inform. Alterations in consistence. Induration — i/s various kinds. I PROPOSE to devote several lectures, in the commencement of the course, to pathology, as it relates to medicine. o 26 ALTERATIONS OF SOLIDS. And I must first of all explain to you what I mean by the word Pathology. Many persons speak of pathology as if it were the same thing with morbid anatomy. That is not the sense in which I purpose to use the term. Pathology is morbid anatomy, but it is something more. A knowledge of pathology (in the full and proper acceptation of the word) implies indeed a knowledge of altered structures and of diseased conditions; — but it implies also an explanation of these — a knowledge of what precedes them, and a knowledge of what results from them. It comprehends, therefore, the following particulars : — 1. A knowledge of the material changes to which the several parts of the living body are subject : 2. A knowledge of the processes or actions whereby these changes may be wrought : 3. A knowledge of the causes which may set these processes on foot: and 4. A knowledge of the consequences of the same changes, or of the symptoms they occasion. On some of these points our actual knowledge is still scanty and imperfect. Yet a good deal of valuable information concerning each of them has been collected ; and this I shall endeavour to place before you as distinctly, and at the same time in as small a compass, as I can. Pathology is general or special. General pathology treats of the morbid condi-* lions which are common to the entire system, or to the whole of each of the several tissues that pervade and compose the system. Special pathology contemplates par- ticular diseases. An acquaintance with general pathology prepares us for, and con- ducts us to, that which is special ; and w'hen I say that the eariier lectures of the course will be given to a consideration of the leading facts and doctrines of patho- logy, you will of course understand me to speak of general pathology. I shall begin by inquiring what are the changes to which the component parts of the hving frame are liable : and I speak chiefly of sensible changes ; leaving unnoticed for the present those conditions which are perceptible only through the microscope. There are, then, various ways, capable of intelligible description, in which the different parts of the body may be sensibly altered by disease. The solid garts may be altered in bulk; inform; in consistence ; in their inti- mate texture, i. e., in the qualities and arrangement of their component particles ; and in situation. The fluid parts may also be altered in quantity ; in quality ; and in place. And many of these alterations may exist in combination wilh each other. Let us first consider the solids. They may be simply altered in bulk without any change of texture ; and that in two ways. They may become larger than natural, or smaller than natural. In the one case the change is called hypertrophy, in the other atrophy. We find the best illustrations of hypertrophy in the muscular system. The huge fleshy masses visibly prominent in the arm of a blacksmith or a pugilist, and in the leg of an opera dancer, afford familiar examples of it. In these cases the increased bulk, although it may be unsightly, as being out of proportion to other parts, is not disease, and does not interfere with the most perfect health. By con- stant exercise the muscles acquire preternatural volume, and weight, and power. It seems to be a law which prevails extensively in the animal economy, that increase of function should lead to augmentation of bulk. The function of the muscular system is contraction, and more frequent and energetic contraction begets an ad- dition of substance. But the same principle obtains in various other parts and tissues. It is especially noticeable in some of the organs that are double. If one kidney wastes, or is spoiled by disease, an increase of function is thrown upon the oiher, and by a beautiful law of compensation, the sound organ, without any alter- ation of its peculiar fabric, enlarges. The same is observed to be the case wilh the lungs The law resembles, somewhat, one that is familiar to political economists, and is expressed by them in the maxim — that the supply of a marketable com- modity is regulated by the demand for it. If, in respect to a muscle, increase of force be habitually needed, the necessity generates the requisite addition of bulk, ALTERATIONS OF SOLIDS. Zi which implies an augmentation of force. One kidney becoming inefficient, it is necessary that the other should secrete a larger quantity of urine ; and this faculty is obtained by the enlargement of the secreting organ. I say this law is of extensive operation in the living body : but it is not universal. [t does not hold, for instance, in respect to the organs of the special senses. One eye does not become hypertrophic when the other is blind ; nor one ear grow larger or longer because the other is deaf. And we see at once why the law in question does not apply in such cases. These organs differ from such as I mentioned before — from muscular and glandular parts — in this : that increase of their size would not further or facilitate the purpose they are designed to serve. A muscular arm will strike a harder blow and lift a heavier weight, in proportion to the greater bulk of its muscles : but we should gain nothing in distance or distinctness of vision by the enlargement of an eye ; nor should we hear more acutely or more clearly if our ears were of twice the ordinary magnitude. Hypertrophy of this unmixed kind — unattended by any change of texture — (and It is 10 this that the term should as much as possible be restricted) — is believed to depend upon more active nutrition of the part (vrtsp *pcK|»;.) More materials are laid down in the part by the blood, and assimilated, than are received back from the part into the blood to be taken out of the body. The nutritive process preponderates over the re-absorbent. That hypertrophy does thus result from an excess in the process by which parts are nourished and built up, and not from a defect in the process by which they are continually unmade and removed, is rendered probable by the fact that an increased quantity of nutrient blood is sent to the hypertrophied part ; its arteries grow larger : this we perceive by comparing these vessels with others where no accession of bulk has occurred. This opinion is further strengthened by the converse effect produced upon an hypertrophied part (the thyreoid gland, for in- stance), by tying its principal nutrient artery. The magnitude of the bronchocele diminishes. It is curious that no such alteration of size has been noticed in the nerves supplying the hypertrophied parts. Now these examples of hypertrophy clearly have not the nature of disease. But hypertrophy is often plainly connected with disease, while still it is not itself a morbid process. Thus we have it in the hollow contractile organs, the office of which is to propel fluids : — in the heart when the progress of the blood suffers some mechanical impediment : in the bladder when the urine, and in the intestinal canal when its contents are somehow hindered in their natural course ; or when, from some undue stimulus or irritation, these parts respectively are urged for a long time together to excessive, or too frequent action. I show you preserved specimens ot each of these changes. You will find that muscular tissue may become apparent, under the influence of disease, where very slight traces of it, or none at all, were visible before. We sometimes observe this in the air-tubes, the trachea and bronchi, when the respiratory functions have been long embarrassed ; and in the gall-blad- der, when the exit of the bile has been chronically obstructed. And it is worth remarking that this new, or greatly exaggerated appearance of muscular tissue, which is the consequence of disease in the human body, is a part of the natural and healthy structure in the corresponding organ of some of the inferior animals. The several instances of hypertrophy that I have now been mentioning, if they are to be looked upon as morbid, are morbid in a particular and limited sense — morbid, merely as being associated with disease, but not so either in their own pro- cesses or in their tendencies. Many, indeed, of the writers who notice them, speak of the hypertrophy as constituting a source of disease, and a cause of danger to the patient. But I shall have occasion to show you hereafter that in most cases it is really a compensatory change, and conservative of life ; — a resource of nature by which impending danger is postponed, and existence prolonged. It may be said of hypertrophy, that its relation to disease depends very much upon its seat. As regards the muscular system — in the voluntary muscles it is generally innocent, in the involuntary it is generally connected with disease ; sometimes as a cause, much oftener as a consequence, sometimes as both cause and consequence. One way in which hypertrophy may manifestly be a cause of 28 HYPERTROPHY. disease is by the pressure'of an enlarged organ upon the parts in its neighbour- hood, and a consequent interference with the functions or the sensations of those parts. I am not sure, whether to those among you who are beginners, I make myself understood. An example or two will render my meaning obvious. It often happens that the aortic orifice of the left ventricle of the heart becomes narrow and constricted, in consequence of disease in the semilunar valves there situate. Under these circumstances it is requisite, for the due propulsion of the obstructed blood, that the ventricle should contract with increased force : and its walls become, accordingly, thicker and stronger. Here the hypertrophy of the left chamber is evidently a consequence or effect of the disease that previously existed at its outlet. On the other hand, when the thyreoid gland is enlarged, it sometimes presses so much upon the parts that lie behind it, as to impede the breathing, or the swallow- ing. In this case the hypertrophy is the cause of consecutive disease. Hypertrophy is exceedingly common in other tissues as well as in the mus-* cular. Of its affecting the glandular system we have good examples in what I have just mentioned, the true bronchocele ; in certain forms of enlarged prostate ; in the thymus gland not unfrequently. Of a state of the brain which is considered to constitute hypertrophy, I shall speak more particularly when we come to the morbid conditions of that organ. Hypertrophy is also said (I am not certain with how much propriety always) to occur in the cutaneous, mucous, and vascular systems, in the bronchial, mesenteric, and mammary glands, in the liver, spleen, and pancreas. Of these parts I suspect that the enlargements to which the term hypertrophy has been sometimes applied, most frequently combine some alter- ation of texture with the increase of size, and therefore are not strict examples of hypertrophy. You ought to be aware that hypertrophy of one or more of the component tissues of an organ may exist, while the others either remain unaltered, or are changed in some other way. It frequently happens that when one component part is thus over- nourished, it is so at the expense (as it would seem) of another which becomes atro- phied. There are parts of the heart upon which a certain quantity of fat is usually deposited. It is not uncommon to meet with this fat in excess, and at the same time to find the muscular texture of that organ pale, flabby, soft, and wasted. What has been deemed hypertrojihy of the female breast consists, almost always, I believe, in excessive development of its adipose tissue, without any enlargement of the gland itself — or even with its diminution. Hypertrophy of the adipose tissue is often general througiiout the body, producing obesity ; and this may become so extreme as to amount to disease, when it is called by nosologists polysarcia. I have seen one fatal instance of this kind. The mother of a large family, whom I long knew as a slender and elegant woman, began sud- denly to grow fat ; and in about fifteen months, without any other discoverable malady, she gradually enlarged into a corpulent unwieldy monster. At length her legs and thighs became a3dematous as well as fat, her lips blue, hei breath was short, and her pulse feeble. One night she was found dead in her bed. The body was not examined ; but her death was mainly owing, as I believe, to fat collected upon the heart, oppressing its movements, and at last stopping them altogether. [n the majority of cases the size of an hypertrophied organ is augmented ; it has a larger superficies than is natural : and therefore I have introduced hypertrophy to your notice among the alterations to which parts are hable in balk. But it is not always so. There may be hypertrophy of an organ without enlarge- ment — in at least three different ways : — 1st. In hollow organs, where the additional substance is deposited cenlrically, and the hypertrophy takes place at the expense of the cavity : 2dly. In any organ, whereof the hypertrophy is confined to one or more tissues, while the others are proportionably wasted ; and, 3dly. Hypertrophy may even be consistent with no alteration of shape, or increase of bulk in any direction, the organ occupying exactly the same <;p^ce, and preserving HYPERTROPHY. 29 the same absolute dimensions as before, but becoming more full of component par tides, more compact, heavier. This state is well exemplified in certain cases of hypertrophy of bone : the spongy or cancelous texture of the bone disappears ; its specific gravity is increased ; it becomes hard, firm, and like ivory. The structure appears, to the eye, to be changed, yet remains the same, except in respect of its density. I have told you that hypertrophy is usually a conservative and salutary change. We shall meet with many illustrations of this as we proceed. But I may take the present occasion for pointing out to you some of the beneficial tendencies of this change when it takes place in bone. For, since the diseases of the bones do not belong to my province, I shall have no other opportunity. You probably know that in the disorder called rickets, occurring principally during childhood, the bones are soft and deficient in their more solid ingredient ; so that they bend under the weight of the body, or the contraction of the muscles attached to them. After a certain period this disproportion in the constituent particles of the osseous tissue ceases ; but the bones are permanently distorted, and, therefore, less adapted to their office, and less strong, than if they had remained straight. Now the natural remedy that ensues is very striking and beautiful. The bent bones become hypertrophied in certain places ; they grow thicker, denser, harder, and consequently strong, at the very concave part where the stress of the pressure is the greatest. The following experiment showed the same thing in a somewhat different man- ner. An inch of the middle part of the fibula of a quadruped was cut out. A long time afterwards the animal was killed. The tibia was then found to have become considerably larger exactly in that part of it which corresponded to the defect in the fibula.* The same principle appears still more conspicuously in a case of disease related by Cruveilhier. He saw in the hospital at Limoges a young man who had lost (from necrosis with suppuration) the middle third of his tibia; of the larger of the two bones of the leg. The lost bone had not been reproduced, but the fibula, the naturally slender bone, had become thick and strong enough to support the whole weight of his body. I was explaining to you that hypertrophy may exist without enlargement. On the other hand there may be enlargement without any change of structure, and yet no hypertrophy. The liver and spleen are apt to acquire a considerable increase of bulk from mere congestion and distension of their vessels by blood. An immense spleen will shrink into its proper size in a few hours, after" hemorrhage from the sto- mach, whereby the gorged venous system of the abdomen has been relieved. Dr. Townshend mentions a remarkable example of the same kind respecting the liver. The inferior cava has been compressed by an aneurismal tumour, so that the pas- sage of blood from the liver was greatly impeded. Under these ciioumstances the liver became so large as nearly to reach the crest of the ilium. Suddenly the aneur- ism burst, the pressure was taken from the cava, the hepatic veins weie allowed to empty themselves, and before the bod} was opened for inspection, the 'iver had nearly resumed its natural situation and dimensions. Of the causes of hypertrophy little more is known than I have already told you. The most important circumstance for you to remember is, that increase of function produces increase of nutrition. This is nearly a general fact ; but whether the con- verse proposition be as generally true — whether hypertrophy of a part always de- notes increased activity in its function — is much less certain. If that were ascer tained, we might hope to discover the actual office of certain parts of the body, the uses of which we do not yet understand (of the thyreoid gland, for example), by investigating the circumstances under which they become subject to hypertrophy. In Mr. Mayo's Outlines of Human Pathology, a case is related of hypertrophy of the tongue, in a young child, treated by Mr. Hodgson, of Birmingham. It would seem to be impossible to account for this by any increased energy in the known functions of that member. * Mr. Stanley's Lectures, Coll Si'rg. c3 30 ATROPHY. A few isolated facts, bearing upon some points connected witn tins inquiry, hav3 been nnade out. In the first place, certain localities appear to be influential in the profluction of certain forms of hypertrophy. Thus bronchocele is verj' frequent among the inha- bitants of certain districts ; especially in close or marshy valleys at the feet of high mountains. Its real cause is to be sought in some condition, hitherto undetermined, of the air in those places, or of the water, or of both. 2dly. Certain congenital or acquired conditions of the body tend to produce local hypertrophy. In that peculiar diathesis which we call the strumous — and of which I shall have much to say hereafter — certain parts of the body, as the upper lip, and the extremities of the long bones, undergo a kind and degree of enlargement thai seem properly to fall within the definition of hypertrophy. 3dly. Certain habits of life have a distinct effect in promoting certain forms of hypertrophy. Full diet, with bodily inactivity, leads to hypertrophy of the adipose tissue. So general is this tendency, that we confidently act upon it in the fattening of animals. Shut a healthy pig up in a small st}^, and give him as much food as he is willing to eat, and you insure his rapid pinguescence. If you cannot so cer- tainly attain the same result by similar means in the human animal, it is chiefly, I believe, because moral causes, and especially mental anxiety, will effectually coun- teract those means. A healthy man, with a quiet mind, using habitually a full nu- tritious diet, and leading a sedentary life, will fatten, I apprehend, as unfaihngly as a calf, or a turkey. Sometimes, indeed, fat accumulates to an enormous extent, in spite of abstinent habits, and very active exercise. 4thly. It is a curious fact that the removal of certain parts of the body, as the testicles from male animals, and the ovaries from females, increases the disposition to accumulate fat. The same tendency appears to be given, for a time, by the extirpation of the spleen. Of the curative methods that hypertrophy may require it would be premature to speak at present. The bulk of parts may be also augmented in various other ways. The hollow organs may be inordinately distended by an undue accumulation of their natural contents : or by matters that do not enter them in health. The solid organs may have their size increased by the presence of matter foreign to their natural composi- tion, collected in their interior, or distributed through the insterstices of their proper tissues, or deposited upon their surface : and in either case the functions of the part itself may be disturbed or suspended; or the functions of parts immediately con- tiguous to it may sustain damage from its pressure ; or the functions of distant parts connected with it by dependency of ofliice may be disordered ; or all these conse- quences may exist together. Numerous examples of them all will hereafter be brought under your notice. Let us next attend to that condition which is the opposite of hypertrophy — to atrophy, namely, in which parts become notably smaller than natural, without other altemtion of texture. The two conditions contrast strongly with each other in their nature and origin, as well as in their physical character. Hypertrophy depends essentially upon an increase — atrophy upon a diminution or defect, of the nutritive functions. You will find that atrophy plays an important part in altering the bodily organs, both in heakh and in disease. Of the effect of atrophy in causing alterations consistent with health, I shall merely remind you of some instances, that you may the better comprehend its morbid operation. There are parts of the body, as you well know, destined for a temporary purpose only. Upon the cessation of their especial function they dwindle, or disappear. We have examples of this in the thymus gland, in the supra-renal capsules, and in those parts of the mechanism of the circulation which are pecuKar to the fostal state. The atrophy here begins as soon as the child is born, and is not only consistent with, but necessary to, its perfect health. As life advances, we see the same principle at ATROPHY. 31 work, remodelling from time to time those structures of which the office has only a limited duration. After the child-bearing period in women is over, when the func- tions of the ovaries expire, these organs shrink, through atrophy. It is so with the testes of old men. Indeed, atrophy, to a certain extent, pervades all parts of the system in old age ; the muscles diminish in size, the whole body is less plump, the bones lose a portion of their substance, and become brittle. Even in the period of foetal life this process, by which parts are starved and stunted, sometimes displays itself. But here it is no longer compatible with the integrity and well-being of the system. The arrest or retardation of the nutritive function produces changes of great interest, and gives rise to various kinds of mon- strosity. Harelip — fissure of the palate — certain malformations of the heart — are familiar examples of the consequences of intra-uterine atrophy. Atrophy, considered as a morbid change, is conspicuous, no less than hypertrophy, in the muscular system. We see it in the voluntary muscles, whenever a limb remains long in a state of inaction — whether from palsy depending upon disease in the brain or spinal cord ; or from pain connected with disease of a joint ; or from perversion of the will, as in the self-inflicted penance of the Fakir. The same law, therefore, obtains here, which w^as previously announced; the development of a part is proportioned to the activity of its function. In most cases, I believe, the atrophy will be found to resolve itself into a deficient supply of healthy arterial blood. Build- ing materials are not provided, or are provided inadequately. Mere inaction will produce atrophy ; but it is probable that the inaction operates simply by abridging the flow of arterial blood to the muscle. If (as some suppose) what is called a change in the innervation of a part tends sometimes to occasion its atrophy ; if, for example, the altered state of the nervous influence has some share, beyond the inac- tion which it produces, in causing the atrophy of a paralyzed limb — it stiJl acts, I conceive, indirectly, and by reducing somehow the supply of healthy arterial blood. The nerves belonging to palsied and atrophied muscles are said not to diminish in size. It is with the arterial circulation, certainly, that atrophy is most concerned. It is upon a diminution of the number of the smaller, and perhaps also of the capacity of the larger arteries, that senile atrophy depends. We find atrophy of the brain accompanying certain diseased conditions of its main arteries. So the testicles wither when the spermatic artery is tied for the cure of varicocele. Pressure of any kind, exercised either upon the large arterial trunks, or upon the capillary vessels, so as to lessen without completely preventing the supply of blood, will be found to give rise to atrophy, whenever the due quantity of blood is not fur- nished by the establishment of a collateral circulation. Chronic inflammation is sometimes attended by the wasting of the part which it occupies. It acts, in all probability, by unfitting the capillary arteries for transmitting the requisite quantity of blood. Various diseases, by which the supply of nutriment to all parts of the body is checked at its source in the digestive organs, or by which some unnatural drain upon the system is kept up — by which, in short, the quantity of the nutrien* fluid is diminished, or its quality impaired — produce a greater or less degree of g^enera/ atrophy ; but to this universal wasting we usually apply the term emaciation. Atrophy, then, such at least as is morbid in its nature, may be the consequence of inaction, of compression, of chronic inflammation, and of various diseases ; but in all cases the defect of nutrition which constitutes the atrophy seems to be resolvable into a diminished supply of healthy blood through the arteries. As in hypertrophy, so likewise in atrophy, the change may be limited to some one or more of the component tissues of a part ; and by these altered proportions of its constituent tissues the appearance of the part may be remarkably modified. So, also, as hypertrophy may exist without any increase of absolute size, atrophy may occur without any decrease : as in the heart, when the cavities are dilated in the exact degree in which their walls become thinner. Bones, externally sound in appearance, have had their specific gravity so greatly reduced by internal atrophy, tliat they would float upon water like a cork. It is a curious fact — which I mentioned in other terms before — that an atrophied part is sometimes plentifully encompassed by fat. But this is by no means a neces- 32 INDURATION. sary accompaniment. Why it happens in one case, and not in another — whether the adipose hypertrophy is ever the cause of tlae atrophy associated with it, or tho atrophy the cause of the hypertrophy : — these are questions which, in the presem state of the science of medicine, do not admit of any positive soUuion. It is scarcely necessary to observe that the changes of bulk which we have been considering, imply often, though not always, changes o[ form also. You will have one or two of the chambers of the heart greatlj enlarged, while the others remain of their natural size. Of course this altered proportion modifies the shape of the organ Signal changes of form are produced also by inflammation, by pressure, and in various other ways. But, after all, modifications of figure are rather to be consi- dered as accidents of disease than among its important elements : and I pass on to other alterations. Various parts of the body are liable to be changed in consistence. They may become harder and firmer than before: or they may become softer. To' the state of increased or unnatural hardness the term induraiion has been applied : the same word is used also to express the process of hardening. To the state of diminished consistence we give the name of softening. The French pathologists, who first noticed this condition as an element of disease, call it ramolUssement. You are already aware — those of you who have attended the lectures of the pro- fessors of midwifery and of anatomy — that a slow process of natural and healthy induration is going on throughout the body from the earliest period of uterine life to extreme old age. There are several ways in which wnnatural induration may take place. Induration of an organ may happen, without any other alteration of its proper tissue, in consequence of inordinate fullness of its blood-vessels. This is apt to occur in the lungs, or liver, whenever the free exit of blood from these organs is in any way impeded. They become stretched, tense, resisting, hard. In Uke manner induration of the hollow organs, or of cellular parts, will arise /without any change of their texture) from an undue accumulation of fluids within to the proportions between the several proximate constituents of the blood. The changes that occur of this kind are sometimes strikingly evident to our senses. For example, we not unfrequently perceive that the blood drawn from a vein is thinner, manifestly more watery, less rich in fibrin, and in colouring matter, than blood of the standard quality. 3. Again, independently of mere alterations in the relative proportions of its proximate constituent parts, the blood is liable to great change in its chemical com- position, and, therefore, in its physical quality. This appears to be the case in sea- scurvy, and in the analogous disease called purpura, and it is doubtless so in many other complaints. The composition of the blood cannot fail to be affected by a deficient supply of the elements of nutrition from without ; by diseases of the digestive organs, interfering with the process of chylification ; by diseases of the organs of respiration, interfering with its change from venous to arterial ; by diseases of other channels of excretion — the bowels, the biliary apparatus, the skin — interfering (as I have already hinted) with its appointed purification ; by foreign contaminating matters, finding entrance (as they may when in solution, or in a gaseous form) through artery, vein, or any membranous substance, such as bladder and intestine : lastly, thfe composition of the blood may be altered, there is good reason to believe, by certain states of the nervous system. But contenting myself with having indicated these latter changes, or sources of change, I shall defer giving a more particular account of any except those that relate to the quantity and the distribution of the blood. I say the blood may undergo important alterations in its quantify. It may exist in too great abundance throughout the body ; and it may exist in too great abun- dance in certain parts only of the body. These states have been recognized for ages. Sometimes they are called respectively general and partial plethora: some- times general and local congestions of blood ; people speak also of irregular deter- minations of blood to different organs ; and, of late, the term hypersemia, first invented by M. Andral, in France, has been imported into this country, and much adopted here. All these words and phrases mean, in truth, the same thing; and their frequent recurrence in medical works, is, of itself, sufficient evidence of the frequency and importance of the conditions which they express. If we comprehend rightly this subject of plethora or congestion, we shall be pre- pared to understand some most important morbid states, of which it seems to be in many, if not in all cases, the earliest approach — the initial step. Inflammation, hemorrhage, dropsy, all acknowledge and imply a previous condition of congestion. "There is probably," says Dr. Alison, "no kind of diseased action of which any part of the living body is susceptible, which is not connected, sooner or later, with increased afflux of blood towards that part, either as its cause or its effect ; and the immediate object of all our most powerful remedies is to act on these irregularities of the circulation." That the blood may be differently distributed in the capillaries at different times, we know by the variable colour of the surface, which depends upon the varying degrees of fulness of the cutaneous blood-vessels. The phenomenon of i)hishing, the red cheek of anger, the heightened colour of the skin under brisk exercise, are fami- liar facts illustrative of partial plethora of the capillaries, consistent with health. There are reasons (which I shall hereafter lay before you) for believing that a similar sudden accumulation of blood, taking place in internal parts, may sensibly disturb their functions ; causing transient fits of giddiness, insensibili'v, and some- times depth itself, when the congestion affects the cerebral blood-vessels; and attacks D'2 42 » GENERAL PLETHORA. of difficult breathing when the capillaries of the puhnonary tissue are conceined; and even these attacks, for aught that I know, may end fatally. It oftt'n happens that when certain portions of the surface, as the cheeks, are visibly redder and fuller of blood than usual, or when such symptoms as I have just referred to denote the probability of some internal congestion, other parts of the sur- face, as in the extremities, are visibly paler : and there are, at the same time, cor- esponding and palpable differences of temperature. Perha})s it may not be so obvious that the whole quantity of blood, throughout the bodv, is sometimes in excess. That in the adult state, when the growth or increase of the body has been com- pleted, blood may be made in greater abundance, and more rich in the materials of nutrition than the wants of the body require, is not only conceivable, but true. We are able to assign circumstances in which this is likely to happen, and we find that under such circumstances it actually does happen. Full living, and a sedentary life, are causes likely to occasion general plethora — and they do occasion it. The full diet, so long as the digestive powers are perfect, provides more chyle, conducts into the blood a larger quantity of its proper pabulum. The sedentary life precludes that freer circulation of the blood, and that more liberal expenditure of it through the^ skin, and by means of the other organs of secretion, which would occur under more active habits. Persons thus circumstanced are apt to grow fat; the adipose tissue seeming, in these cases, to form a kind of safety valve for the diversion of the super- fluous blood. Such persons have turgid and florid cheeks, red lips, red mucous membranes, and (ncft uncommonly) ferrety eyes. Their entire vascular system is preternaturally distended. If you open a vein, you find that they bear a large abstraction of blood without fainting, and are even refreshed by it ; and the blood drawn separates into a large and firm mass of coagulum, with but little serum. Keeping to the nomenclature we have already employed, we might say that there is here liypertrophy of the blood. When inflammation arises in the subjects of this general plethora, it runs high, and requires active treatment. But they are not, as you might naturally exj^ect them to be, and as many writers state them to be, peculiarly prone to sufler inflam- matory complaints. There is a general fullness of the vascular system, but no irre- gularity, nor any necessary tendency to irregularity, in the distribution of the blood. You will observe that the relative proportion of the more solid to the more fluid constituents of the blood is increased in these cases of general plethora : the blood is not only more abundant, but it is richer also in fibrin, and in red particles. The means to be adopted for redressing this unnatural and unsafe condition of the circulation, are those which common sense would suggest. The removal of a por- tion of the superfluous blood, a more restricted diet, a larger allowance of active exercise. It will be worth our while to contrast this state of general plethora with its opposite — that in which the blood is scanty and poor — what Andral calls (though with questionable propriety) anaemia. Oligscmia is the cacophonous but more exact name assigned to it by Gendrin ; hut poverty of blood is the ordinary English phrase for it, and the best of the three. This is a state which we can produce at will, by abstracting blood from the body in moderate quantity, but repeatedly, and at short intervals. It occurs, also, frequently, in spontaneous disease, and from various causes ; from a privation of the materials destined to replenish the blood ; and in cases in which these materials appear to be turned to little account, as in chlorotic girls. We see it in those who habitually and frequently lose a certain quan'iiy of blood, in disease; in persons, for example, who are subject to piles, and who bleed daily from the rectum ; still oftener in women who sufler repeated hemorrhagi's from the uterus. When the drain has been long-continued, these persons become very pa)'^; even those parts which are naturally most red, as the lips and tongue, become almost white,' their faces look like wax; and if still you draw blood from a vein, and allow it to coagulate, you v/ill have a small clot floating in an abundance of ferum, and that small clot will be of a light rosy colour; showing a great diminution *n the proportion of fibrin ; and a still greater deficiency of the red particles. The ANEMIA. 43 blood, as they say, is " turned into water." It is a curious pathological fact, that the red particles require more time for their restoration than the other constituents of the blood. And I may mention to you now, what I shall have to repeat, that — in con- junction with the obvious curative measures comprised in arresting tbe habitual loss of the vital fluid, and in aflbrding sufficient nutriment to the system, — the prepara- tions of iron, and the respiration of pure air, have signal efficacy in renewing the rea particles, and giving back again their native hue of redness to the cheek and lips. In general plethora every part is preternaturally full of blood, and the blood itself is full of the elements of nutrition. General plethora, therefore, implies, in one sense, local plethora of every organ and tissue. In strictness, however, local plethora is only predicable of a part that contains more than its share of red blood. Now the converse of this is not true, as it might be expected to be, of the opposite condition. A deficiency in the whole mass of blood contained in, and circulating through the body, does not protect the parts of the body from congestion — from having an undue quantity of blood sent to them. Far from it. Local determinations of blood are very common in persons in whom the mass of that fluid, and the pro- portion of its nutritive materials, have been considerably diminished by disease, or by hemorrhage. This remarkable tendency. Tinder such circumstances, to an unequal distribution of the blood in the capillaries, admits (I think) of this explanation. A due supply of healthy blood is requisite for the steady and equable performance of the function? of the brain and nerves. When this supply is defective, or uncertain, those functions become disordered and irregular, and, in their turn, influence the various solids, dis- turb their action, and derange the balance of the circulation. That the capillary blood-vessels may be filled to excess, or completely emptied, by causes operating through the nervous system — by moral emotions, for example — we are sure from the phenomena just now adverted to, the blush of shame or anger, the paleness of fear ; and there can be no doubt that morbid congestions, which sometimes are separated from those that are consistent with health by very slight shades of difTer- ence, are often determined through the agency of the same nervous system. And persons endowed Avith great sensibility or irritability of the nervous system are very liable to partial and irregular congestions of blood. But this is not the only way in which local congestion may arise. We can produce it, upon the surface of the body at least, at pleasure, and that m various ways ; by friction, by exposing the parts to a high temperature, by certain stimulating applications, mechanical (as a cupping-glass), or chemical (as a mustard poultice) : we produce an injection of the small cutaneous blood-vessels ; there is, evidently, more than the usual quantity of blood attracted to the part, or detained in the part — a degree of redness, which soon subsides if the cause of it be withdrawn in time. Congestion thus occasioned is not inflammation, but it is the first obvious Step towards that complex process ; and for this reason it deserves all your attention. Apply the exciting cause a little longer, or increase, in a slight degree, its intensity, and the phenomena of inflammation begin to manifest themselves. I said we can produce local congestion when we please upon the sinface of the body; but there can be no doubt that a similar state may be produced by analogous causefi, in internal parts. Look at this representation of the stomach of a dog (one of Dr. RoupelV s plates). You see one portion of it of a bright red colour, actively and vividly congested. This was the consequence of a dose of alcohol. We may be certain that something of the same kind is the result of every visit to the gin shop. Local congestion thus produced, or of this kind, is said to be active. M. Andial, whose nomenclature has come much into fashion of late years, calls it sthenic, or active hyperemia. The arteries, perhaps, have more to do with it, in the first instance, than the veins. But it is in the capillary vessels, which are distinct from, and interposed between the minute arteries and veins, that further changes aro wrought, when the process advances a stage bej'ond mere local plethora. What 44 LOCAL PLETHORA. has been observed, by the aid of the microscope, with res^ject to the blood-vessek, 1 will endeavour to describe to you. I take the account I am about to give you chiefly from Kaltenbrunner, a German pathologist, who has recently investigated the subject experimentally, and whose observations are believed to have been most carefully and skilfully conducted, and their results no less faithfully narrated. His observations were made upon the circulation as it appeared in the web of a frog's foot, under a powerful microscope. It would be idle, and something like committing a fraud upon you, were I to lay any stress upon my own knowledge or experience in this matter, for I cannot pretend to any great skill in the use of that instrument, and my opportunities of noticing, by its help, the phenomena of the circulation, have been too few to render their results of much value. Yet it may be in some degree satisfactory to you to know that I am not blindly repeating the remarks of others, and that what I have witnessed is perfectly in accordance with the statements of Kaltenbrunner, and affords me a strong assurance of his accuracy and fidelity. There is another reason, too, why I con- sider him the more trustworthy — he has no theories to which he might be disposed to bend or accommodate his facts. Before I detail to you his account of the phenomena of congestion, I may briefly describe the scene which presents itself when the web of a frog's foot is looked at through a good microscope. It is a most beautiful and wonderful spectacle, and particularly interesting to those who, like ourselves, are desirous of gaining some insight into the healthy and diseased states of the circulation. It is a sight which I hope and believe you also will have many opportunities of seeing in this place. You perceive, then, occupying the circular field of the instrument, a number of blood-vessels, through which the blood, with its globules, is in active motion : and you see at once that there are three different kinds of vessels before you. First, you notice the blood shooting with great velocity along tubes which divide and sub- divide into smaller and smaller branches, each branch (speaking generally^ going off at an obtuse angle : these are plainly arteries. Then, in another part of the field of view, you see the blood moving in the contrary direction, more slowl}', in larger trunks, which are formed by the continual union and accession of smaller and tributary vessels of the same kind, that meet, for the most part, at acute angles : these you know to be veins ; and all the intermediate and surrounding surface in view is occupied with other vessels or channels, which connect themselves with the ultimate ramifications of the arteries on the one hand, and with the primary radicles of the veins on the other, but which differ from both arteries and veins in these par- ticulars — that they interlace and anastomose in all parts, in a very irregular manner, and at all angles, and that they retain everywhere .the same uniform size ; they neither collect into larger and larger trunks, nor separate into smaller and smaller branches, but are disposed like the threads forming the meshes of a net, except thart the interstices are irregular in size and shape. These are the true capillaric^ inter- mediate between the arteries and the veins, and perfectly distinct in character from each, but communicating and continuous with both. If now you press upon the animal's leg, so as to obstruct the circulation a little, the motion of the blood is retarded, especially in the capillaries. You see the red globules slowly following one another. These so-called globules are not really little spheres, but circular discs, or flat cells. You may sometimes see one of them sticking to the side of a capillary channel, and damming up the current ; other glo- bules accumulate behind it, till at last they all pass on again together. Now Kaltenbrunner irritates the web by pricking it, and soon afterwards the following appearances present themselves : — There is an increased afflux of blood to the part, so that arteries, veins and capillaries receive a column of blood two or ♦.hrfe times as great as usual ; the velocity of the blood is accelerated ; the distended sides of the vesseis seem to tighten round the stream of blood which they contain. With this alteration of the circulation, the natural functions of the part begin to be modified. The change of the blood from arterial to venous is interrupted. The globules, passing with great rapidity through all the vessels, retain the characters of arterial globules even when they arrive at the veins ; they present a bright colour. ACTIVE CONGESTION. 45 Show a tendency to stick together, and often form little clots, which pass through the capillaries, and become visible in the veins. One of the natural functions of the web is the secretion of a kind of lymph; but this secretion is now suspended. The parenchyma itself begins to be shghtly tumid, and assumes a brighter tint than common. All these phenomena begin from a circumscribed spot, of which the circumference gradually expands as the affection increases ; and they cease insensibly at that circumference. This is active congestion. A certain period always intervenes between the first action of the irritant cause, and the commencement of true congestion. This period, the occurrence of which you will be good enough to bear in mind, Kaltenbrunner calls the period of incuba- tion ; the period in which the congestion is hatching. Active congestion, as such, does not continue long. It either passes on into inflammation, as I shall hereafter explain, or it begins to decrease. When it has been very sHght, the quantity of blood, and the rapidity of its movement, diminish gradually from the circumference towards the centre ; and in this way the conges- tion insensibly vanishes. But, in other cases, Avhen it has not been so slight, the congestion terminates by an evident crisis, which Kaltenbrunner thus describes : — The blood, receaing from the circumference of the congested part towards the centre, gives out, by exhalation, a liquid. The exhalation takes place by fits, and here and there, through the sides of the capillary tubes, and generally on the surface of the organ. The moment of exhalation is very transient; but it is repeated often, and in different spots, until the congestion has disappeared. It is evidently critical, for the congestion is reheved and extinguished in proportion as the exhalation is repeated. I shall follow these consequences of active and continued local congestion no further at present ; but merely remind you again that the changes I have last men- tioned constitute the earliest appreciable modification of structure leading or belonging to inflammation. What we thus may see (and it is what I myself have had some opportunities of seeing) in the transparent textj^res of animals, we reasonably infer to take place, under analogous circumstances, in those parts of the body which are internal and opaque, and consequently hidden from our view. I will just observe, also, that as active congestion is the parent of inflammation, so it sometimes causes hemorrhage, and is relieved by it. But, comparing this form of congestion with another which I am about to mention, the connection of hemorrhage with it is, relatively, unfrequent. One obvious mode of remedying this congestion is the mechanical abstraction of blood from the loaded part. But it is seldom that this measure alone suffices ; and sometimes it would be ultimately hurtful to adopt it. The state of the constitution may be such, that the disposition to local plethora would be increased by the loss qf blood. Undue susceptibility and disordered action of the nervous system are apt to be aggravated by bleeding; and in proportion as the nervous functions are irregu- larly performed, does the tendency to unequal distribution of blood in the capillary vessels augment. We have daily examples of this in hysterical young women. It IS not, therefore, the mere congestion that we have to consider ; we must look deeper, for its cause. Leave a small thorn in the finger : the blood will be collected there in consequence of its irritation, and will continue to collect in spite of depletion. But extract the thorn, and your remedial measure of taking away blood is at once suc- cessful. So it is also with internal congestions of blood — of which the exciting and sustaining cause is not always so well known. Contrasted, in some important particulars, with active congestion such as I have been describing, is that morbid fullness of the capillary vessels which arises when the return of the blood from them towards the heart through the veins, is impeded by some mechanical obstacle. With this mechanical congestion the veins are exclusively concerned. Congestion of this kind may be strictly local. It may be confined to a smglo limb, when the principal venous trunk belonging to that limb -s compressed, or 46 PASSIVE CONGESTION. Otherwise diminished in size ; and when no collateral and compensatory channels for the returnirtg blood have been established. If there be disease of the liver, of such a nature as to prevent a free passage of the blood through that organ, conges- tion will ensue in all those parts of the capillary system from which the blood is conveyed by the veins that ultimately concur to form the vena porta?. The force of gravity alone is sufficient to produce venous congestion, and consequently conges- tion of the capillaries, in parts of the body in which, under ordinary circumstances, the circulation through the veins is aided, instead of being opposed, by that force. If, for instance, the head be suffered to hang downwards for a certain lime, we see the unequivocal signs of such congestion in the tumid condition and the purplish red colour of the lips, cheeks, eyelids, and ears. When an impediment to the free transmission of blood exists in the heart itself, a tendency to stagnation is produced, first in the vence cavse, then in the smaller ramifications by which these veins are fed, and at length in the general system of capillary vessels ; and thus even general congestion may proceed from a fixed mechanical cause ; the parts that are the most vascular being also the most readily and the most completely gorged. There is yet a third form of local congestion, differing, in some respects, both from active and from mechanical congestion. The capillaries become loaded, and the course of the blood in them is languid and sluggish, without any previous increased velocity of the blood in the arteries, and independently of any mechanical obstacle in the veins. To this form of congestion the term passive is applied. Andral denominates it passive or asthenic hyperagmia. I will tell you the class of facts from the observation of which the real existence of this passive plethora has been ascertained. In persons enfeebled by age, or by disease, the lower parts of the legs, the insteps and ankles, and the skin which forms the surface of old scars, are often habitually purplish, or violet coloured. There is congestion of dark blood in those parts. You may, perhaps, be ready to ascribe this to the mere influence of gravity upon the blood, but this cannot be the whole explanation, because the force of gravity is the same with all persons, and at all ages. A horizontal position of the limb will perhaps diminish the hvid redness, or may even sometimes entirely remove it. But the depending position ought not to cause it, and wonlu not cause it, if the blood- vessels were in a healthy condition. Neither can the difference of posture be any source of irritation to the congested part. The capillaries themselves appear to have lost, in a great degree, their natural elasticity ; they easily dilate under the pressure of the blood, which, being thus retarded, accumulates in the part. The employment of friction, or some stimulating application, will often remove this con- gestion. I say all this is often to be noticed when there has been no cause of irritation operating upon the part, and no preceding state of active congestion. But it is important to mark the very frequent connection that exists between these con- trasted conditions. The one very often succeeds the other : the vessels become dilated under the force of the active hypersemia, and, the irritation ceasing, they do not at once recover their tone, but remain passively loaded and distended. They are frequently left in the same state upon the subsidence of inflammation. Take another illustration from what you may any day witness in respect to indo- lent ulcers. You will find that the large, flabby, and livid granulations which they present, may be made to contract, and to assume a more healthy and florid hue, by local stimulants ; these evidently act by quickening the previously languid circula- tion, and unloading the congested capillaries. Observe, again, what not unfrequently happens in regard to the eye ; a little crgan, indeed, but one that supplies us with more striking lessons in patnology and therapeutics than any other portion of the body. You know that the conjunctiva and sclerotica, through which, while healthj'-, colourless fluids alone circulate, are traversed, under various forms of disease, by innumerable vessels bearing red blood. Now it is notorious that, in certain cases, the application of any stimulating sub- stance to the surface of the organ wiU increase the existing redness, multiply the number of visible vessels, and aggravate the complaint. These are cases of active PASSIVE CONGESTION. ' 47 congestion, dependent upon irritation that is still subsisting. But it is equally well known to practical men that the blood-vessels of the eye are Kable to congestion of a very different kind. They are seen to be distended, somewhat tortuous, almost vari- cose, and the redness has a browner tinge, and is less vivid, than in the former case. In this kind of vascular fullness — or in this stage of it, for it sometimes succeeds to active congestion, — emollient applications do harm rather than good, while strongly astringent and even irritant substances will often promptly dissipate the vascularity. These, again, are cases illustrative of congestion of the asthenic or passive character. The strong topical irritants restore to the feeble and relaxed vessels their natural elas- ticity, stimulate them to contract upon their contents, and to force onward the red blood, which they cease to admit from the arteries ; and the redness vanishes. In the production of active congestion the arteries appear to be principally con- cerned : in the production of mechanical congestion, the veins: in passive conges- lion, the capillaries — which, strictly, are neither arteries nor veins, but lie between the arteries and the veins — are the vessels chiefly in fault. If we turn our thoughts from the visible textures of the body to those which are hidden internally, we shall find reason to believe that these also are equally liable tn similar conditions of passive congestion. Take those exceedingly vascular organs, the Jungs, through which the whole of the blood circulating in the living body nas to pass. The lungs, as might be expected, are very liable to congestion and engorge- ment of their capillary vessels. Ofc-times this is clearly active, and the result of some irritating cause. But it is not always so. Many of you recollect the epidemic disorder called the influenza, which was so prevalent here in the spring of 1831, and again in the early part of 1837. Among the most constant and striking charac- ters of the disease were the symptoms of pulmonary catarrh ; and it was remarkable how long, ih some persons, these symptoms persisted. After the pulse had regained its natural frequency of beat, and when all fever had ceased, the patient would con- tinue to breathe with constraint and some labour, to wheeze a little, to cough, and to expectorate mucus. As all febrile disturbance had subsided, and no further benefit seemed to flow from adhering to what is called the antiphlogistic system, it was a reasonable conjecture that this disappointing obstinacy of some of the symptoms might depend upon a lingering but passive congestion of the pulmonary mucous membrane. And the nature of ihejuvantia showed the correctness of this con- jecture. Tonics and stimulants, so far from aggravating the pectoral symptoms, speedily removed or abated them. You cannot fail, I think, to perceive the important bearing of these distinctions between active and passive congestion upon our notions of disease and our choice of remedies. These distinctions are not to be discovered by the knife of the anato- mist. You must take care not to confound a knowledge of pathology, in the proper sense of that word, with a knowledge of morbid anatomy. Pathology comprehend;; not only the visible changes of structure which accompany disease, and are disclosed by death, but the processes by which those changes are effected in the hving body, and the laws which govern those processes. There is one important law ascertained in respect to both active and passive con- gestion : viz., that it is apt to recur; that those parts are most likely to suffer it (or inflammation, which implies it) that have suffered it before. We may often turn our knowledge of this general fact to good account, in what is termed the jirophy- laxis of disease — in devising means for warding off disorders. I have stated that active and passive congestion sometimes occur in succession, the latter being a sequel of the former. So, also, it may be said of passive and of mechanical congestion, that they often exist together. If the capillaries of a part or organ be much enfeebled, the mechanical effect of the gravity of the blood may suf- fice to bring them into a state of congestion. It is thus that Andral explains the occurrence of a gorged condition of the posterior portions of the lunrrs (evinced by symptoms during life, as well as by inspection of those parts after death), in persons who, having laboured under no previous pulmonary affection, have been confined to a supine position by long-continued disease or debihty. This state of the capillaries is called by Lerminier the "engorgement of position ;" and by Laennic, "th'^ pneu- 48 CONDITIONS OF LIFE. moiiia of the dying." It neither proceeds from irritation, nor has it the essential characters of inflammation ; although it is ajit to be considered an evidence of inflam- mation by the mere morbid anatomist. Again, as active congestion, when continued or intense, is antecedent and con- ducive to inflammation, so is mechanical congestion, when it reaches a certain point, the prolific source of hemorrhage, and the almost constant precursor and immediate cause of a large class of dropsical accumulations. I spoke a little while ago of general plethora, as a state in which the whole mass of blood circulating in the body is excessive in quantity, and rich in quality — full of fibrin and of colouring matter, thick with globules. But the blood, as a mass, may be in excessive quantity, yet poor in its materials, serous, deficient in globules, and fibrin, and colour; and in this condition of the blood, also, as we shall hereafter see, dropsies are apt to arise. We have now, therefore, laid the foundation for the better understanding of those three great classes of disease — InJIammations, Hemorrhages, and Dropsies. There is no region or organ of the body exempt from these diseased conditions and their consequences ; and of each of them some general account must be given, Defore we come to consider the special diseases incident to the several parts and organs. But previously to entering upon this general account of inflammation, of hemor- rhage, and of dropsy, we have still some other preliminary matters of importance to discuss. The causes and modes of death. The causes of disease. A sketch of the nature, classification, and import of symptoms. Our inquiries hitherto have related to the manner in which the physical condi- tions of the various parts of the body are capable of being altered, and their functions disturbed or suspended, in disease. But how it happens that some of these altera- tions of structure, or interruptions of function, are incompatible with the further con- tinuance of life, and put a stop to the working of the whole machine, is an inquiry nf no less interest, though of a somewhat difl"erent kind. LECTURE V. Different modes of dying. Pathology of Sudden Death. Death by Amemia; its Course, Phenomena, and Anatoinical Characters. Death by Asthenia ; its Course, Phenomena, and Anatomical Characters. Syncope. Death by Inani- tion. Death by Apnoea: Death by Coma: their Course, and Phenomena, and the Anatomical Characters common to both. Application of the Principles ob' tainedfrom the investigation of the Phenomena of Sudden Death, in elucidating the Symptoms and Tendencies of Disease. I. PROPOSE to devote the present lecture to the following inquiry: — Wherefore it IS, and how it is, that some of the corporeal changes which we have been consider- ing, or the diseased conditions connected with those changes, come to be incompatible with the further continuance of life ? how it is that they put an end to the working of the living animal machine ? why the machine should not continue to work, though perhaps imperfectly, notwithstanding such changes ? When our watches stop, we take them to a watchmaker to ascertain why they have stopped. The watchmaker knows that there are various ways in which the movements of the instrument may have been arrested. The main spring may have broken ; or the little chain that connects the barrel with the fusee may have parted ; or the teeth of some of the wheels may have become inextricably entangled ; or the watch may have ceased to go (as the saying is) simply because it has not been wound up. Now the examination which the watchmaker undertakes in respect to the watch, I am desirous of making in respect to the human body. I am going to inquire mto the several processes and modes of dying — the steps, or ways, by which CONDITIONS OF LIFE. 49 the vital functions of the body are extinguished. A very Httle experience in the sick chamber, or in the wards of a hospital, will suffice to teach you that, although all men must die, all do not die in the same manner. In one instance the thread of existence is suddenly snapped ; the passage from Hfe, and apparent health perhaps, to the condition of a corpse, is made in a moment : in another the process of dissolu- tion is slow and tedious, and we scarcely know the precise instant in which the solemn change is completed. One man retains possession of his intellect up to his latest breath : another hes unconscious, and insensible to all outward impressions, for hours or days before the struggle is over. We seek to assertain the laws and mechanism of these mysterious differences. The inquiry is not one of merely curious interest, but has a direct bearing upon the proper treatment of disease. It will teach us what we have to guard against, ■what we must strive to avert, in different cases. In speaking of particular diseases, I shall constantly refer to the facts and reasonings which I am now about to lay before you. In pursuing this inquir}', we need not go into any deep physiological disquisition respecting the conditions that are essential to hfe. It is sufficient for our purpose to remark that life is inseparably connected with the continued circulation of the blooa. So long as the circulation goes on, life, organic Ufe at least, remains. When the blood no longer circulates, life is presently extinct : and our investigation of the dif- ferent modes of dying resolves itself into an investigation of the different ways in which the circulation of the blood may be brought to a stand. Observe the ample provision that is made, in the construction of the body, for car- rying on and maintaining this essential function. First, there is an extensive hy- draulic apparatus distributed throughout the frame, and consisting of the heart and othcT blood-vessels. Next, there is a large pneumatic machine, forming a consi- derable part of the whole body, and composed of the lungs, and the case in which they are lodged. Lastly, the power by which this machine is to be worked and regulated is vested in the nervous system. Each of these systems must continue in action, or the circulation will stop, and hfe will come to an end. The functions ihey respectively perform are, consequently, called vital functions : and their main organs — the heart, the lungs, the brain (by which I understand the intercranial nervous mass) — are denominated vital organs. The functions of any one of the three being arrested, the functions of the other two are also speedily extinguished. But the phenomena of dying vary remarkably according as the interruption begins in the one or the other organ. Hence Bichat, who in his Recherches siir la vie et la mort, laid the foundation of the distinctions I am about to describe, spoke of death beginning at the head, death beginning at the heart, and death beginning at the lungs. This nomenclature is, however, unsatisfactory and insufficient, as you will presently per- ceive. That the heart may continue to propel the current of the blood, two things are necessary : first, a certain power or faculty of contraction ; and, secondly, a suffi- cient quantity of blood in its chambers, to be moved, and also to stimulate theni to contract. If this, the proper stimulus to the internal surfaces of the heart, be with- held, or much deficient, it will soon cease to beat. There are plainly, therefore, two ways in which death might be said to begin at the heart ; and these require to be distinguished. The respiration is entirely subservient to the circulation of the blood. The two organs, the heart and lungs, respond intimately to each other. The whole of the blood is sent by the right heart to the lungs, simply that it may there be submitted to the chemical action of the atmosphere. The respiratory apparatus is added to the body for the sole purpose of thus repeatedly ventilating the blood. To this purpose also (setting aside all accidental impediments) two things are re quisite ; first, circumfused air to enter and depart at short intervals ; and, secondly, alternating movements of the chest to cause its entrance and exit. Now these movements, although they admit of being regulated by the will, are essentially involuntary. The ordinary acts of respiration depend upon a certain con- 4 E 50 DEATH BY ASTHENIA. dition of the medulla oblongata. If this condition fails, the mechanical part of the respiratory process, and, consequently, the chemical part also, ceases. The respiration hangs, therefore, directly upon the nervous system. On the other hand, the action of the heart is not directly or necessarily dependent upon any constant nervous mfluence conveyed to it. The circulation goes on in an acephalous foetus ; it may be kept up, by maintaining artificial respiration, in a deca- pitated animal ; nay, even when both brain and spinal cord have been abstracted from the body. But though the nervous influence is not necessary to the movements of the heart — further than as it is necessary to the respiration, and to the introduction of nutri- ment — it has been clearly ascertained that very sudden and extensive injury or shock to the nervous system may instantly paralyze the heart, and so stop its action. There are certain states, then, of the brain and nerves which, without directly afTecting the heart, bring the motions of respiration to a pause : and there are cer- tain states of the brain and nerves Avhich act directly on the heart and arrest its pla3^ That is, there are two different ways in which death might be said to begin at the head. Hence, I say, the nomenclature employed by Bichat is defective and inaccurate. In order to see clearly the steps by which the circulation, and with it life, finally terminates, in the various forms of dying, we must study the problem under its sim- plest forms. We must examine the cases in which the vital functions are, each in their turn, suddenly stopped, by some known cause, operating upon this or that vital organ. We must take advantage of tlie experiment (if I may so call it) which is performed before our eyes whenever a healthv man is cut off at once by external violence, or by poison, acting directly upon a particular organ or system of organs. The inquiry might be assisted, and, indeed, it has been mainly carried on, by ex- periments made upon living animals of a similar conformation with man. But the pathology of sudden death is happily now too well understood to require any further recurrence to that painful mode of " interrogating nature." Death, as it takes place in disease, is usually complicated. Many parts are affected, and different functions languish, and various disturbing causes are in operation, at the same time. Occasionally, however, the process of dissolution is as simple and obvious as in death produced by violence ; and in most cases some primary and pre- dominant derangement may be traced of this or that vital function ; and a tendency is more or less clearly manifest to one or the other of the modes of dying, which we may now proceed to consider in succession. And first let us examine that form of death which is caused by a want of the due supply of blood to the heart. This is caUed, with much propriety, death by anaemia. The best examples of death taking place in this way are those in which it is the consequence of sudden and profuse hemorrhage. The circulation fails, not because the heart has lost its power of contraction, but because blood does not arrive in its chambers in sufficient quantity. We assure ourselves of this in two ways. In the first place, when the body of an animal is examined immediately after death from sudden and copious loss of blood, the heart is not found dilated and full of blood, as it would be if it had ceased to act from a Avant of {)ower to contract upon its contents ; but it is found empty, or nearly so, and contracted. Secondly : this conclusion is confirmed by the reverse expe- riment : by the effect, I mean, of the transfusion of blood. It is a fact well ascer- tained, first by experiments made upon animals, and afterwards by most happy trials upon the human subject, that in cases of apparent death from violent hemorrhage the suspended functions may be restored by conveying a timely supply of blood into the vessels of the seemingly dead animal from the veins of a hving animal of the same species. Now it is quite clear that this introduction of fresh blood could be of no avail in a case where the heart was unable to act upon the blood which had already reached it. The phenomena which attend this mode of dying are paleness of the countenance tjid hps, cold sweats, dimness of vision, dilated pupils, vertigo, a slow weak irregular DEATH BY INANITION. 5J pulse, and speedy insensibility. With these symptoms are frequently conjoined nausea, and even vomiting, restlessness and tossing of the limbs, transient delirium : he breathing is irregular, sighing, and, at last, gasping ; and convulsions generally occur, and are once or twice repeated, before the scene closes. It is thus that women often die, in whom "flooding" happens after childbirth. Sometimes the sudden bursting of an aneurism occasions this form of death. It is common on the field of battle, and in accidental injuries whereby large blood-vessels are wounded. Internal hemorrhage, depending upon diseases to be hereafter described, may also prove fatal in the same manner. This, then, is one form of death beginning at the heart. Another form, the con- verse of this, but spoken of also as death beginning at the heart, is that in which there is no deficiency of the proper stimulus to the heart's action, but a total failure of contractile power in that organ. This is well denominated death by asthenia. Death occurring in this way is not uncommon. The effects of some kinds of poison furnish a good illustration of it. There are certain substances which, applied to some part or other of the bod}', speedily extinguish fife : and when, after their fatal operation, the thorax is opened, each chamber of the heart is found to be filled with its proper stimulus, upon which it has been unable to contract. This was distinctly made out by Sir Benjamin Brodie, in his able and scientific investigation of the effects of different poisons. You may read with advantage his papers on this subject in the Philosophical Transactions for 1811 and 1812. He ascertained upon examining the chest after death occasioned by the upas antiar, that the heart was not empty, but full, there being purple blood in its right, and scarlet blood in its left cavities. These are the anatomical characters of this kind of death ; and they prove that the action of the heart does not cease from a defect of stimulus, but from a loss of its contractile power. The state of suspended animation common to both these forms of dying — (the ultimate external phenomena being nearly the same in each, and the result in each being the simple failure of the circulation) — is often expressed by the term syncope. Besides the essential distinctions between them already mentioned, there is this further point of difference. In death by anramia, the suspension of the functions of the nervous system arises from a lack of blood which should be sent to the brain from the heart. Hence the well-known effect of mere position. Syncope is sooner produced by venesection when the person bled is sitting up than when he is recum- bent : and the first remedy for the fainting state is to lay the patient flat upon the ground, or even to place his head a little lower than the trunk of his body. In the one posture the current of the blood towards the head is impeded by the force of gravity ; in the other it is not. In sudden death by asthenia this order is reversed ; the nervous system is the part first affected, and through it, consecutively, the heart. This appears from the fact that sudden death by asthenia is sometimes produced by causes which we know to act primarily upon and through the nervous system ; by strong mental emotion — as intense grief, joy, terror. Cases of fatal concussion, where the brain is jarred by some bodily shock — and death occurring almost instantly from blows on the epigastrium — are of this kind. Lightning and electricity kill too, when they kill at all, in the same way. And we shall hereafter see that certain varieties of apoplexy, and several other diseased conditions, destroy life by suddenly arresting the contractile power of the heart. When death by asthenia occurs more slowly, from disease, the phenomena are somewhat different. The pulse becomes very feeble and frequent, and the muscular debility extreme ; but the senses are perfect, the hearing is sometimes even painfully acute, and the intellect remains clear to the last. The tendency to death of this form is remarkably manifest in acute inflammation of the peritoneum, in what is called malignant cholera, and in cases of extensive mortification. Akin to this form of dying is that in which the living povvers are slowly exnausted by fingering and wasting disorders, as in many cases of phthisis, in diabetes, and in dysentery ; or by hemorrhages moderate in amount, but frequently repeated ; or by any other long-continued drain upon the system. The death is partly, however, t(j 52 DEATH BY APNCEA. be ascribed to a deficient supply of the natural stimulus to the heart's action. The type of these mixed modes of dying is seen in death by starvulion, which may be considered intermediate between death by anaemia, and death by asthenia. Death from inanition can never be sudden. The blood, renewed no longer from without, and fed only by absorption from the system itself, diminishes gradually in quantity, while its quality deteriorates. Gradually also the contractile power of the heart, eis well as of the muscles generally, is weakened ; and from these combined causes its movements at length cease. Accordingly after death by starvation the heart is not found to be so much contracted, nor so nearly empty, as after death by sudden and copious hemorrhage. Certain diseases of the throat or the cesophagus, prohibiting the introduction of food ; of the stomach, preventing its retention ; of the digestive organs generally, hindering its assimilation, are fatal in this manner. We have yet to consider how death is produced by the suspension of the respi- ratory function — in other words, by a want of the due arterialization of the blood. There are two perfectl}^ distinct modes in which this cause of death may happen ; distinct, i. e., in regard to the steps of the process, although identical in regard to the ultimate result. 1. When the access of air to the lungs is suddenly denied by some direct obsta- cle to its entrance. 2. When the muscular actions required for breathing cease in consequence of insensibility, caused by disease or injury of the brain. The first of these two forms of dying is commonly called death by ctspJiyxia. The second is conveniently termed death by coina. Bichat spoke of them respect- ively as death beginning at the lungs, and at the head. It is of much importance to get rid, when we can, of improper names. They are ver}' apt to warp our notions concerning the real nature of the things they are intended to express. This term asphyxia, which is in every body's mouth, is very inappropriate, if we look to its etymology, to the kind of death which it has come to denote. It signifies, you know, literally, pulselessness, the want of pulse ; and there- fore it might express any kind of death whatever ; or if applied to any particular mode of dying, it would seem to belong to that we have just been considering, namely, death beginning at the heart. And you will presently see that it is pecu- liarly inapplicable to all those cases where death results from the non-arterialization of the venous blood. Its current signification has, I am afraid, been too long estab- lished by custom, to allow of its being restored to its proper meaning without much confusion. But at any rate, I can and shall avoid its use, and adopt in preference the generic term o/j;2ffa (privation of breath) as justly expressive of the mode of death to which the word asphyxia is commonly given by authors. The generic English term is suffocation. The entrance of air into the lungs may be prevented in various ways : by stop- page of the mouth and nostrils {smothering): — by submersion of the same inlets in some liquid {droivning); or in gases which, though not in themselves poisonous, contain no oxygen ; such are hydrogen and azote : — by mechanical obstruction of the larynx or trachea from within, as by a morsel of food (choking), or from with- out, as by the bowstring [strangulation; both these varieties are included in the term thiottling): — by forcible pressure made at once upon the chest and abdomen, pre- venting all movement of the ribs and of the diaphragm ; this happens sometimes to workmen employed in excavating, who are buried, their heads excepted, by the falling of a mass of earth ; it was near happening, Dr. Roget tells us, to an athletic black man, of whose body a cast was attempted to be taken, as an academic model, by one operation, and in one entire piece. "As soon as the plaster began to set, he felt on a sudden, deprived of the power of respiration, and to add to his misfortune, was cut off from the means of expressing his distress ; his siniation was perceived just in time to save his hfe ;" in this way the victims of Burke and Hare were stifled ; and the same immovable state of the lung-case is sometimes produced in tetanus, or oy the poisonous influence of strj'chnine, all the respiratory muscles being fixed in ri^ i spasm . — b) paralysis of the same muscles, from injury or disease of the spina' DEATH BY APNCEA. 53 cord above the origin of the nerves that give oif the phrenic nerve, and therefore above the origin of the intercostal nerves also ; or from section of the phrenic and intercostal nerves : — lastly, by such breaches in the walls of the thorax as admit air freely to the surface of bolh lungs, and spoil the pneumatic machine, as a pair of bellows is spoiled when deprived of its valve. Of course the same consequences ensue when both pleurce become filled with liquid of any kind. Whenever the privation of air is sudden and complete, the following external phe- nomena present themselves. — Strong but vain contractions occur of all the muscles concerned in breathing, and struggling efforts to respire are made, prompted by that uneasy sensation which every one has experienced who has tried how long he can hold his breath, and which, when unappeased, soon rises to agony : this extreme distress is transient, being almost immediately succeeded by sensations, not unplea- sant, of vertigo, and then by loss of consciousness, and convulsions : at length all effort ceases, a few irregular twitchings or tremours of the limbs alone perhaps remaining; the muscles relax, and the sphincters yield: but still the movements of the heart, and even the pulse at the wrist, continue for a short time after all other signs of hfe are over; there is no asphyxia (properly so called) till the very last. During this process, which does not occupy more than tw^o or three minutes, the face at first becomes flushed and turgid, then Hvid and purplish, the veins of the head and neck swell, and the eyeballs seem to protrude from their sockets ; at length the heart ceases to palpitate, and life is extinct. The internal changes which correspond with, and cause these outward symptoms, have been carefully studied, and accurately, though slowly and lately ascertained. They all proceed from the prevention of the chemical alteration naturally produced in the blood, within the capillary vessels of the lungs. The blood, continuing venous, passes at first in considerable quantity through the pulmonary veins, into the left side of the heart, and thence through the arteries, to all parts of the body. This venous blood, however, is inadequate to sustain, or sufficiently to excite, the functions of the parts it thus reaches. In the brain the effect of the unnatural circulation is felt at once ; and shown by the convulsions and insensibility that ensue. The motion of the blood in the pulmonary capillaries is also, from the first, impeded, and its current gradually retarded, until it stagnates altogether ; the lungs remaining full, the right chambers of the heart distended, and therefore less capable of contracting. Meanwdiile the black blood, flowing more and more tardily and scantily into the left chambers, leads, by its unnatural quality, as well as its deficient supply, to feeble contractions ; and this side of the heart is comparatively empty. In this state, even after |.he heart has ceased to beat, but not long after, if the i ause which has excluded the air be withdrawn, and fresh air readmitted — in other words, if artificial respiration be instituted — the blood in the pulmonary capillaries under- goes the required change, becomes arterial, begins again to pass onwards, and by degrees the circulation is restored, and the patient saved. In this mode of death the circulation is first arrested, and death truly begin.., in the lungs. When the carcass of an animal, that has thus perished of apnosa, is immediately afterwards examined (so speedy an inspection of the human body being, for obvious reasons, seldom practicable or proper), the left side of the heart is found to contain a small quantity of dark blood, while its right cavities are greatly distended, and the lungs, the cavce, and the whole venous system, are gorged with blood of the same character. These are, in few words, the anatomical characters of sudden death by apncea. The pathology of this mode of dying has, I say, been thoroughly understood only of late. It will not be uninteresting, and may, I think, be useful, to trace briefly the successive steps by which the true explanation has been attained. Haller was of opinion that the quiescence of the lungs, consequent upon the cessation of the alternate movements of the thorax, formed a mechanical impediment to the further transit of the blood through them; and that death resulted from obstruction of the circulation in Ihe lungs. He was partly right ; but he erred in supposing that thir stream of blood was arrested absolutely, and at once, and by a mechanical obstacle e2 54 DEATH RY APNCEA. Apnoea, with all its peculiar phenomena, occurs, when atmospheric air is excluded, although the lungs continue to play ; as in persons who breathe azote or hj^drogen gas. It was clearly shown by Dr. Goodwyn, in his Essay upon the Connection of Life ivith Respiration, that the unaerated blood passed through the lungs and entered the left auricle and ventricle of the heart ; but he thought that it went no further. His notion was that arterial blood is the only stimulus which can excite the contrac- tion of the left cavities of the heart, and that, when venous blood arrives in them, the organ becomes motionless ; and no blood being sent to the brain, the person dies. Had this theory been true, the left chambers would be found full of blood after death (which they are not), and the mode of dying would not have differed essentially from that which we have already considered as death by asthenia. The well-devised experiments of Bichat carried the investigation a step further, and proved that the unaerated blood not only reached the heart, but was propelled by the contractions of that organ to every part of the body, through the arteries. Having applied a liga- ture upon the trachea of a living animal, he made a small opening in one of its carotid arteries. Presently the slender stream of blood that issued began to lose its florid tint, and to assume the dark colour of venous blood; but it continued to floic, and the afflux of this dark blood upon the brain was marked by convulsions and insensibihty. Bichat conceived, therefore, the erroneous belief that the blood under- went no obstruction in its passage through the lungs, but that, remaining unpurified and venous, it acted as a poison upon every part to which it was carried by the arteries — first upon the nervous S3'stem, and ultimately (passing through the coronary arteries) upon the muscular substance of the heart itself. There are, however, two well-known facts, which, upon this theory, would be inexplicable — the comparative emptiness of the left chambers of the heart, and the restoration of the suspended functions by the timely performance of artificial respiration. The air could never reach and revivify or depurate the venous blood, stagnating in the capillaries of the heart. It was reserved for Dr. Kay to correct the unsound parts of Bichat's doctrine, and to show that the blood begins to stagnate in the capillaries of the lungs, in con- sequence of its failing to undergo the change from venous to arterial ; and that the movements of the left heart are brought to an end, principally by the deficient supply of blood from the lungs. His experiments tend, moreover, to prove that venous blood circulating through the arteries has no directly poisonous operation, but is capable, though much less effectually than arterial blood, to support, in some degree, the irritability of the muscles. A muscle will continue to contract longer when supplied with venous blood by its arteries, than when supplied with no blood at all. Doubt- less, in death by apnoea, the movements of the heart are weakened, partly in conse- quence of the imperfect stimulus afforded by the venous blood that penetrates its substance ; but the main cause of the failure of the circulation seems to be the diffi- culty with which the non-arterialized blood finds its way through the capillaries of the lungs. This theory is consistent with all the phenomena observed. For a detailed account of the experiments and reasonings upon which Dr. Kay's conclu- sions are founded, I must refer you to his work on Asphyxia. Sudden death by apncea is not very often witnessed as the result of disease. It sometimes is caused by a spasmodic closure of the rima glottidis. It is no uncom- mon consequence of accidents, in which the upper cervical vertebra? are broken or displaced. I ii:ive seen several instances of death rapidty produced, with all the symptoms of sudden suffocation, generally in intoxicated persons, in whom the chink of the glottis has been found closely plugged by a fragment of meat, which "had gone the wrong way." But there are numerous forms of more chronic disease, in which the tendency to death by apnoea is plainly discehiible, sometimes for a long while before their fatal lermmation arrives. And the phenomena are similar in character to those which are noticed when the struggle is short. We hear the patients complain of the " want of breath ;" we see how they labour to satisfy this want, when it becomes urgent, by the elevated shoulders, the dilating nostrils the energetic action of all the muscles ihat are auxiliary to the respiration; we perceive by the dusky and loaded coun- tenance, the hvid lips, and ears, and eyelids, that the blood is but imperfectly arte DEATH BY APNGEA. 55 rialized. The diminislied capability of such blood to support the functions of the brain is made evident by the vertiginous sensations, and the delirious thoughts of the gasping sufferers ; and after death we find the same distension of the right chambers of the heart, while the left are nearly empty — the same gorged condition of the pulmonary arteries and venous system generally, which constitute the anatomical characters of this mode of dying. These appearances are even more constandy visible in the dead body, when apncea has been gradually produced, than after sudden suffocation ; simply, I believe, because they are more permanent. After sudden death, however caused, the blood seldom coagulates; and the venous turgescence consequent upon rapid apncea, although great at first, has time to subside and disap- pear before the body is examined. In protracted cases, death does not take place purely in the way of apncea ; the heart is weakened, and the nervous influence impaired by the continued circulation of imperfectly arterialized blood ; but the symptoms belonging to apncea are plainlj'- predominant. When (as is most common) the privation of air is incomplete, and a scanty and insufficient supply is admitted, morbid changes take place in the lungs themselves ; the air-tubes and cells become charged with serous fluid, which operates as an addi- tional cause of suffocation. The saine phenomenon is observed when the par vagum is divided on both sides. Death by apnoea in disease is extremely common. It may be produced by any thing which narrows the chink of the glottis ; by warts that sometimes grow there, by oedema of the submucous tissue of the larynx, by inflammatory tumefaction of its lining membrane: it may result from the presence of what are called false mem- branes in the windpipe and bronchi, such as are formed in the distemper named croup : it may be the consequence of disease situate in the substance of the lungs themselves, rendering them incapable of receiving the requisite quantity of air ; of this we have examples in pneumonia, and in pulmonary apoplexy : or it may pro- ceed from disorders of the pulmonary mucous membrane, the air-passages becoming- blocked up with excessive and unnatural secretions, as in bronchitis. Phthisis is sometimes fatal in the way of apna-a; more commonly it tends to death by asthenia. Diseases of the pleurce attended with effusion, and causing pressure upon the lungs : diseases of the heart and great thoracic blood-vessels, afiecting the quantity of blood in those organs ; even certain abdominal maladies, accompanied by sweUing, and thrusting the diaphragm upwards — terminate by the same mode of dissolution. Death by coma, akhough common enough, and of much importance to be under- stood, need not detain us long. Certain morbid states of the brain (it is unnecessary at present to inquire into their nature and origin) produce stupor, more or less pro- found ; the sensibility to outward impressions is destroyed, sometimes wholly and at once, much oftener gradually; the respiration becomes slow, irregular, stertorous ; all voluntary attention to the act of breathing is lost, but the instinctive motions con- tinue; the stimulus conveyed by the pulmonary branches of the eighth pair of nerves, and probably by certain branches too of the fifth, still excites, though per- haps imperfectly, the reflex power of the medulla oblongata, Avhich sustains the involuntary movements of the thorax. At length this function fails also — the chest ceases to expand — the blood is no longer aerated — and thenceforward precisely the same internal changes occur as in death by apnosa. You will observe that the extinction of organic life takes place in exactly the same manner in both cases : the difference between the two forms of dying being this — that in death by apnoea, the chemical functions of the lungs cease first, and then the circulation of venous blood through the arteries suspends the sensibility; whereas, in death by coma, the sensibility ceases first, and in consequence of this tin. movements of the thorax, and the chemical functions of the lungs, cease also. So that the circulation of venous blood through the arteries is in the one case the cause, and in the other the effect, of the cessation of animal life. The causes that destroy the sensibility leave no constant or necessary traces >r their operation. The essential anatomical characters of death by coma, and of deain by apnoea, are therefore the same. 56 APPLICATION' OF PRINCIPLES. Death occurring in the way of coma has this pecuHar kind of interest belonging to it, that it may sometimes be efTectually obviated by a mechanical expedient. The circulation ceases because the actions of respiration cease — and the failure of the acts of respiration arises from a suspension of the nervous power. If it be merely a suspension — if the nervous functions are within the verge of recovery — organic life may be sustained by the performance of artificial respiration, until the insensibility has passed away ; and thus the danger to life, which depended on that insensible state, may be escaped. .Many years ago, in the course of those researches to which I have already referred, Sir Benjamin, then Mr. Brodie, was led to think that by continuing the respiration artificially in animals labouring under the influence of narcotic poisons, the heart might be kept in action until the stupefying but transitory effect of the poison upon the brain had gone off. This idea he soon brought to the test of experiment, and the result was such as to justify his ingenious reasoning. He. inserted some woorara into a wound which he had made in a young cat. After a certain time the respiration had entirely ceased, and the animal appeared to he dead, but the heart could be still felt beating. The lungs were then artificially inflated about forty times in a minute. The heart continued to beat regularly. When the artificial breathing had been kept up for forty minutes, the pupils of the cat's eyes were observed to contract and dilate upon the increase or diminution of light, but the animal remained perfectly motionless and insensible. At the end of an hour and forty minutes there were slight involuntary contractions of the muscles, and every now and then there was an efTort to breathe. At the end of another hour the animal, for the first time, showed some signs of sensibihty when roused, and made spon- taneous efforts to breathe twenty-two times in a minute. The artificial breathing was, therefore, now discontinued. She lay, as in a state of profound sleep, for forty minutes longer, when she suddenly awoke, and began to walk about. Sir Benjamin Brodie had indeed been anticipated in this happy proposition for recovering persons apparently dead after taking narcotic poison, after submersion, and the like, — although he does not seem to have been aware of it. The experiment had once been tried before, and on the human subject, and with success, though not upon such scientific principles. The case is given by Mr. Whately, in the Medical Observations and Inquiries, vol. vi. A man who had swallowed an immense quantity of solid opium, and who seemed to be dead, was restored by the patient continuance, on the part of his medical attendants, in a process of artificial breathing It is seldom that we can hope for success from this expedient in the treatment of disease ; simply because, in most cases, the injury of the nervous system which has produced the insensibility is irretrievable. In most forms of apoplexy, and of hydrocephalus, death occurs in the way of coma. Sometimes, however, as I mentioned before, the lesion of the nervous sub« stance is so extensive and sudden, as to operate like a shock, and cause death by asthenia. The tendency to death by coma is also strongly pronounced in sundry afTections of the brain, both acute ond chronic. These will form subjects for oui consideration hereafter. The several modes of dying, then, in cases of sudden death, are clearly enough made out. Let me briefly sum up the conclusions at which we have arrived. Life cannot be maintained without the circulation of arterial blood : and whenever a person dies, he dies either because no blood circulates through his arteries, or because venous blood circulates through them. When it comes to pass that no blood is circulated through the arteries, we say that death occurs in the way of syncope; and this is of two kinds. In the one there IS not blood enough received by the left side of the heart to stimulate its chambers to contract, or to be sent onwards by their contraction ; in the other, there may be blood enough, but the heart has not sufficient power to contract upon it. Also there are two ways in which death may be brought about in consequence of the circulation of th'^ venous blood through the arteries. In one of .hese, the first step is tlic sudden shutting out of air from the lungs ; the blood which arrives m CAUSE OF DISEASE. Sf those organs is not aerated, or rendered arterial, but circulates again as venous blood, producing a failure of the animal functions, and weakening the muscles, till it finally stagnates in the capillaries of the lungs themselves. In the other, the animal func- tions are the first to suffer — insensibility occurs — the power which governs the movements of respiration is withheld — the breathing ceases — and organic life is extinguished as in the former case. I trust you even already perceive that a right understanding of these matters is calculated to throw both light and interest upon our study of the symptoms and of the tendencies of disease. It will enable us to aim with more precision at ful- filling the indication so often inculcated by Cullen, of " obviating the tendency to death." In this sketch I have merely been able to hint at the important bearings of such views upon our practice. My attention was first called to them by the lectures of my respected instructor. Dr. Alison, who was accustomed to illustrate them by reference to the phenomena of one large class of disorders. All the modes of dying that I have described are apt to take place in fevers. Some- times we have to combat the one, sometimes the other tendency. The disease often proves fatal in the way of coma ; this happens principally when the brain has been a good deal affected, when there have been much headache, delirium, and stupor ; sometimes, when the lungs have been seriously implicated, hfe is extinguished in the way of suffocation or apnroa : and occasionally fever seems to terminate fatally in the way of syncope, especially when the stress of the disorder has fallen upon the bowels, when there has been continued diarrhea, and ulcer- ation of the intestinal glands. Or if death does not occur precisely in these ways, at least it resembles more in different cases, sometimes one form of dying, sometimes another. It is notorious that very different remedies, and even different plans of treatment, have been strongly recommended, in fever, by different practitioners. One probable reason of this is, that one plan has been found the most proper to avert the fatal event in one form of the disease, and one in another. The tendency to a particular mode of death will prevail in, and characterize, a whole epidemic. We shall resume these considerations hereafter : in the mean time the facts we have been reviewing may teach us the danger of applying, with too much confidence, the experience we may have gained of one epidemic to the treatment of another ; and the risk we are sometimes liable to, of misjudging, and criticising unjustly, the practice recom mended by other physicians, because it does not appear to accord with the results of our own observation. LECTURE VI. Causes of Disease : distindmi between predisposing and exciting causes. Enu- meration of causes, as connected with the Atmosphere — Food and Drink — Poisons — Exercise — Sleep — Mental and Moral Conditions — Hereditary Ten- dencies — Malformations. Temperature. Effects of Heat and Cold. The causes of disease are commonly arranged under three heads — as predis- posing, exciting, or proximate. Of these three, the last mentioned, or the proximate cause, is nothing else than the actual disease itself — the actual condition of that part of the body from which the whole train of morbid phenomena essentially flows. When we know that part, and that condition, we name the disease accordingly. It may be inflammation of the lungs; or softening of the brain. When we do not, we call the complaint after the group of symptoms by which it is characterized : intermittent fever, perhaps ; or marasmus. The term " proximate cause" is, therefore, an unnecessary term : it is, moreover, to learners, a puzzling term, and tends to give to the study of the disease a scholastic and repulsive aspect. I wish you to get into the habit of contemplating the whole science of medicine under its simplest and plainest form 58 CAUSE OF DISEASE. I am sure we may very well abolish the term " proximate cause" altogether ; and having now given an explanation of its meaning, for your guidance when you meet with it in books, I shall never employ it, in these lectures, except perhaps in a quo- tation, again. In strictness of language, one event is held to be the cause of another event which follows it, when the first being absent, the second never occurs ; and the first being present, the second never fails to occur, unless some other event intervene to prevent it. But the causes of disease will not bear to be spoken of after so strict a fashion. We perceive that certain external circumstances [qux nos circumstant) often precede such and such diseases ; and that the diseases seldom happen when the same circumstances are not previously observable ; and we begin to regard those circumstances as exciting causes of those diseases. We find that the dis- eases are much more frequent among persons known to have been exposed to the agency of the presumed causes than among persons who are not known to have been so exposed. The evidence at first is presumptive only. But the more unifonn their conjunction, and the more rare their disjunction, the more confi- dently do we assign to the two consecutive events the relation of cause and efl^ct. By this kind of observation a number of exciting causes of disease have been clearly estabhshed to be such. But recollect, certain circumstances being present, such and such diseases do often, not alwuys, follow. Some persons are more Hable to be afl^ected by the ope- ration of many of these ascertained causes than others are; and the same persons are more liable to be influenced by the same cause at one time than at another. And special circunastances, existing in particular cases, will be found to account for this variable operation of known exciting causes upon the bodily health. These special circumstances may properly be called predisposing causes. Thus, of twenty persons exposed to the same noxious influence — to the combined agency of wet and cold during a shipwreck, for example — one shall have cala: ih, another rheumatism, a third pleurisy, a fourth ophthalmia, a fifth inflammation of the bowels, and fifteen shall escape without any illness at all. A man does that with impunity to-day, which shall put his life in jeopardy when he repeats it next week. It is not, there- fore, the exciting cause o/one that in all cases determines the dis-..se. Something — nay much, or all — will frequentl}^ depend upon the conditio . of the body at the time Vv-hen the exciting cause is applied ; and this condition of the body, which we cai\l predisposition, will depend upon circumstances then or previously in ope- ration ; and these circumstances are, in our language, predisposing causes. Do not confound, as many seem to do, the predisposition mth the circumstances creating it. The predisposition is a certain state of the body — the predisposing cause of what produces that state. The cause of the predisposition is the predis- posing cause of the disease. A predisposing cause may therefore be defined to be any thing whatever which has had such a previous influence upon the body as to have rendered it unusually susceptible to the exciting cause of the particular disease. It is sometimes difficult, or impossible, to say of a given cause whether it ought to he ranked among the exciting or among the predisposing causes ; whether it has prepared the system for being affected by some other agent, or whether it has itself produced the disease ; but for the most part the distinction is real, and sufficiently well marked, and of great importance to be attended to. Disease may sometimes be averted, even in despite of strong and fixed predis- "^osition to it, if we know, and can guard against, the agencies by which it is capable of being excited. A man may inherit a proclivity to consumption, yet fortunately escape that fatal complaint by timely removal to a warm and equable chmate, and by other suitable precautions ; that is, by avoiding whatever tends to rouse the dormant tendency into action. On the other hand, disease may often be warded ofl', notwithstanding the presence and application of its exciting cause, when its predisposing causes are ascertained and can be prevented. In proportion js the body is weakened or exhausted, it yields more readily to the pernicious influence of contagion, or of malaria ; but by obviating all causes of debility, and CAUSE OF DISEASE. 0» fortifying the system, we walk with comparative security amid surrounding pes- tilence. Diseases sometimes occur when no exciting cause, when no cause at all, has been apparent. All that we can say of such cases (which are not, however, very fre- quent) is, that the causes have not hitherto been discovered. Now the ascertained causes of disease are many and various. Whatever minis- ters to life, health, or enjoyment, may become the medium, under changing circum.- slanccs, of pain, disease, or death. The atmosphere, in which we are constantly immersed, is full of dangers. Both the organic and the inorganic world of matter around us abound in poisons ; they lurk in our very food, which becomes pernicious when taken in excess, or Avhen it consists of certain substances, or certain admix- tures of substances ; so that there really was much truth, as well as some humour, in the startling motto to Mr. Accum's book on adulterations — " There, is death in the pot. ''^ Our passions and emotions also, nay, even some of our better impulses, when strained or perverted, tend t6 our physical destruction. The seeds of our decay are Avithin as well as around us. Let us enumerate, however, a httle more particularly, the various known sources of disease, with the view of making, afterwards, a few practical comments upon some of them. r shall pass over, in this enumeration, nearly all chemical and mechanical inju- ries ; inasmuch as these belong to surgery. If we look to atmospherical causes, we shall find that those varieties in the state of the air which proceed from mere differences of degree in its natural qualities may- be productive of disease. Such are, extremes of heat and of cold ; sudden variations of_temperature ; excessive moisture or excessive dryness ; different electric condi- tions ; differences of pressure, as measured by the barometer; a deficiency of light. Again, the atmosphere may be a source of disease in consequence of its being loaded with impurities. Malaria, contagions of various kinds, and noxious gases in general, may be considered as so many poisons. Under the head of nutriment we may place the use of food of which the quality is bad and hurtful ; this cause also strictly belongs to the class of poisons. Again, an insufficient supply of healthy food ; and still more common causes are excess in eating, and intemperance in drinking. The numerous poisons which are not comprehended under either of the foregoing heads are also prolific sources of disease. Another great class among the causes of disease might be formed by considering together the influence of various trades and avocations which are directly injurious to the health of those who pursue them. We know, by ample experience, that a certain amount of bodily exercise is essen- tial to good health. We see the evil consequences of much overstepping that amount, in tlie deformities and disorders which result from labour too severe, or too long continued. But a much more numerous train of complaints follow the opposite state — that in Avhich, from indolence, or from necessity, but little exercise is used. Excessive indulgence in sleep on the one hand, and long-continued want or inter ruption of repose on the other, are apt to give rise to serious maladies. Very many diseases have a mental origin. Excessive intellectual toil — the domi- nation of violent passions — the frequent recurrence of strong mental emotions — vicious and exhausting indulgences, — each and all will sap the strength, and grievously impair the health of the body : and perhaps there is no cause of corpo- real disease more clearly made out, or more certainly effective, than protracted anxiety and distress of mind. When we add to this catalogue of the sources of disease all those morbid tenden- cies which are hereditary — and those which flow from original malformation, and are congenital — we shall have a tolerably complete list of the manifold dangers to which our mortal frames are continually liable. There are several points of view under which the consideration of these causes of disease might be shown to be interesting. We might inquire, for example, which of them are commonly predisposing, which exciting causes; and what are the cir- 60 , CAUSE OF DISEASE. cumstances which are found to render the same agent at one time merely a predis- posing, and at another time an exciting cause. We might also separate, with some advantage, those causes of disease to which the human body is often and necessarily exposed, from those which consist in agen- cies that are of local or temporary existence only. But without multiplying these artificial distinctions, I shall take occasion to advert to them either when speaking more in detail of particular causes, or when speaking of the disorders they have produced. In our investigations into the causes of disease, great caution is necessary in order to avoid being misled by individual cases. The circumstances capable of influ- encing the bodily health are so various — so many of them are apt to be in operation at the same time — and so little power have we of excluding them, one after the other, so as to ascertain the exact efficacy of each — that our observations respecting their relative or their actual effects are open to much fallacy. We endeavour to escape this source of mistake by repeating and multiplying our observations. But it is by tracing diseases as they affect considerable masses of men, placed as nearly as possible under the same external circumstances, that we gain the surest and most satisfactory evidence in respect to the causes of disease. And hence it is that the experience of the medical officers of our fleets and armies is so valuable. Dr. Alison has well remarked, that all the circumstances of the whole number of men whose diseases fall under the notice of military and naval practitioners are, in many respects, exactly alike: the men are generally healthy adults in the first instance — the cir- cumstances in which they are placed are thoroughly known to the observer — and, indeed, are often to a certain degree at his disposal ; they are often suddenly changed also ; and changed sometimes as to one portion of the whole mass of individuals, while they remain unchanged as to another portion ; so that his opportunities of observation partake in some measure of the nature of experiments, and being made upon a large scale, they are especially interesting and conclusive. In point of fact a great deal has been learned, with absolute certainty, upon this subject. Hitherto I have simply enuinerafcd the principal causes of disease : — but con- ceiving a bare enumeration of this kind to be of but little use, I shall inquire some- what more nearly into the nature and mode of operation of several of them 7ioiv ; of others I prefer to speak in connection with the particular diseases to which they give rise. You will not consider the inquiry superfluous. To know the cause of a disease is sometimes to be able to cure, often to be able to prevent it. In some cases the cause is beyond our power, but an acquaintance with its nature may teach us how to moderate or to remedy its consequences. There are many diseases also over which medicine has very little control, but the causes of which, when ascertained, may be avoided, or extinguished. Such causes, when they do not happen to be removable by individual efforts, are often susceptible of extinction by the united measures of a community. And for this reason it is very desirable that correct opinions respecting the causes of disease should be widely diffused among the public ; — and there is now no way in which information of this kind is so likely to be made generally known, as by communicating it to medical students who are about to scatter themselves in ail directions over the face of the land. I shall proceed, then, in the first place, to the consideration of heat and cold, as external agencies capable of producing disease. The range of atmospheric temperature compatible with human life is very con- siderable. Its limits are probably juit those extremes of heat and cold that belong to the lower strata of the air in the different parts of the planet on which man is desdned to exist. Under the burning sunshine of the tropics, and amid the pro- found frost of the polar regions, we alike find human dwellers. These different degrees of external temperature impress indeed peculiar physical characters upon those who are subjected to them, but they do not, of necessity, extinguish life, or even cause disease. It requires more care, however, to preserve life under intense cold than under intense heat. In some parts of India the temperature ranges for a CAUSE OF DISEASE. 61 long time together from 80 to 100, and even 110° of Fahrenheit's thermometer: I believe it sometimes reaches 120°. "VVe can form some estimate of this heat by remembering the oppressive effect of the lowest of these temperatures — that of 80° — to which the thermometer sometimes rises in this country in the hot weather of summer. But these tropical cHmates are very thickly peopled. In the arctic coun- tries, on the other hand — in the northernmost parts of America, for example — where the sun appears above the horizon for a short part of the year only, and where the thermometer sinks to 40 or 50° below zero — we still find inhabitants, indeed, but they are few, and thinly scattered. This mainly depends, no doubt, upon the scanty supply of human food in those parts of the world ; but something also is to be ascribed to the depressing influence of extreme cold upon the vital powers. Indeed, the deficiency of human food is itself owing to the restraining effect of a low tem- perature upon organic life. Under a degree of temperature a little greater than that at the equator— or a little less than the lowest around the poles — it seems probable that man would soon perish. And in this fact we have one striking instance of the adaptation of external nature to the physical constitution of the human race. But for a short time — and imder certain circumstances — man is capable of enduring a very much higher degree of heat than the open and general atmosphere ever attains even in the hottest portions of the earth. Whether he could continue to exist, even for a little while, under a much more intense cold than ever occurs naturally on the surface of the globe, is more questionable. It was long believed that the human body could not be safely exposed, even for a short time, to a degree of heat much exceeding that which is met with in hot chmates. This opinion, which we now know to have been erroneous, was strengthened by the result of some experiments made by the celebrated Fahrenheit himself, and related by Boerhaave in his Chemistry. Some animals were shut up in a sugar-baker's stove, where the mercury stood at 14G°. A sparrow died in less than seven minutes, a cat in rather more than a quarter of an hour, and a dog in about twenty-eight minutes. The noxious air of the stove had probably more to do with the speedy deaths of these animals than the heat. The truth, upon this subject, may be said to have been discovered by accident. In the year 17G0 and 1761, jVIM. Duhamel and Tillet were appointed to devise some means of destroying an insect which consumed the grain in the province of Angoumais in France. They found that this could be done by subjecting the corn, and the insects contained in it, in an oven, to a degree of heat great enough to kill the insect, but not so great as to hurt the grain. In order to ascertain the precise heat of the oven, they introduced into it a thermometer placed upon the end of a long shovel. The mercury, when the thermometer was withdrawn, was found to indicate a degree of heat considerably above that of boiling water. But M. Tillet was aware that the thermometer had sunk several degrees as it was drawn towards the mouth of the oven. While he was puzzled to invent some way of determining more exactly the actual degree of heat, a girl, who was one of the attendants of the oven, offered to go in, and to mark with a pencil the height at which the mercury stood. And she did enter the oven, and remained there two or three minutes, and then marked the thermometer at 100° of Reaumur, which nearly equaUcd 2G0° of Fahrenheit. M. Tillet then began to express some anxiety for the safety uf the girl, but she assured him that she felt no inconvenience, and remained in the even ten minutes longer, during which time the mercury reached the 288th degree ^f Fahrenheit's scale — denoUng 76° of heat above that of water when it boils. When she came out her complexion was considerably heightened, but her respiration was by no means quick or laborious. This experi- ment was afterwards repeated Another girl remained in the oven as long as the former had done, at the same temperature, and with the same impunity. Nay, she even breathed, for the space of five minutes, air heated to about 325° of Fahrenheit — or 113° above that of boiling water. The publication of these facts naturally excited the curiosity of scientific men, and other experiments were soon instituted. Dr. Dobson, of Liverpool, and several other persons with him, shut themselves up in the sweating room of the public hos- pital there, the air having been heated till the quicksilver stood at 224° of Fahren- 62 CAUSE OF DISEASE. heit. They did not experience any oppressive or painful sensation of heat. Dr. Fordyce and Dr. Blagden made some remarkable trials of the same kind. They entered rooms artificially heated to a very high degree, sometimes naked, and some- times with their clothes on, and bore the extraordinary temperature of 240°, and even 200°, for a considerable time, with very little inconvenience. In all these experiments it was found that the animal heat, as ascertained by thermometers placed under the tongue, or grasped in the hand, was scarcely increased at all ; and the respiration but little affected; but the pulse was very much quickened. The fre- quency of Dr. Blagden's pulse in one instance was doubled. You may read -i detailed account of these experiments in the Philosophical Transactions ', but to give you a more lively notion of the degree of heat to which the bodies of these gentlemen were exposed, I may tell you that their watch-chains, and other pieces of metal about them, became so hot that they could scarcely be touched; when they breathed upon the thermometer, the mercury immediately sank several degrees ; each act of expiration produced a pleasant feeling of coolness in the nostrils, and they cooled their fingers by breathing upon them. In and by the same heated air which they respired, eggs were roasted quite hard in twenty minutes, and beef-steaks were dressed in thirty-three minutes ; and when the air was blown upon the meat by means of bellows, it was sufficiently cooked in thirteen minutes. It is ascertained, then, beyond all doubt, that the human body is capable of sustaining these very high degrees of temperature, for a short time, without detriment. Facts of this kind may, perhaps, appear to you rather curious than useful. Man is never submitted to any natural heat of the air even approaching towards that to which the authors of the experiments I have been describing voluntarily exposed themselves. But a knowledge of extreme cases always tends to throw light upon those that lie between the extremes ; and the direct resuhs arrived at in these philo- sophic inquiries are not barren of practical utility to members of our profession. It is not long ago that a man was found almost dead in an oven ; he expired a quarter of an hour after he was taken to one of the borough hospitals ; and an inquest was held upon his bodj'-. The newspaper report of the case (which is the only one I have seen) states the temperature of the oven to have been about 120° — a candle was melted by it in half a minute. Now prior to the trials just mentioned, exposure to such a degree of heat would have been held a sufficient cause of death. We now know (and it would be discreditable if we could not support our opinion in a court of law, or before a coroner, by a reference to authentic facts) that something else must have concurred in extinguishing life ; and, in fact, it turned out that the man was drunk when he went into the oven. But what are the effects, upon the human frame, of a high, yet less excessive, temperature of the air? One very constant effect of heat is that of stimulating the organic functions of the body. We have seen that the temporary application of great heat accelerates remarkably the action of the heart : the pulse was uniformly found to be much increased in frequency in the persons who made trials of their powers of endurance in heated rooms. We have evidence to the same purpose in the annual changes that take place in the vegetable kingdom at a given place, the summer renewing its foliage ; the winter checking and repressing it; and still more in the superior luxu- riance of vegetation in warm climates as compared with cold. And the same observation applies to those functions which animals possess in common with plants. Towards the poles both man and the lower animals are smaller than at the equator. Linnaeus remarks that the hares, partridges, and other animals which inhabit the northern climes, are considerably smaller in size than the same species in more southern climes. And Mr. Tooke, in his Vierv of Bussia, observes, "As we ap- proach nearer to the north pole, both the animal and vegetable productions of nature become more and more stunted. The ordinary stature of the Samoyedes seldom exceeds four or five feet, and their whole exterior corresponds Avith their dwarfish si^e." The stature of the native inhabitants of hot cHmates does not, I behevc, fixceed that which is proper to the temperate zone ; but if, as is generally beheved. I CAUSES OF DISEASE. 6-$ the human body, like plants and fruits, grows faster, and npens sooner, in proportion as we approach the equator, this must be attributed to the stimulus of heat acting upon the or£!;anic life. On the other hand, and in some sort as a contrast with this, we may observe that considerable heat, when applied for some time together, has a sedative or depressing influence upon the animal functions, i. e., upon the nervous system ; causing lan- guor and lassitude, want of energy, a disinclination to exertion both bodily and mental. Under favourable circumstances, and where due precaution is exercised, it is pro- bable that a very high degree of natural temperature of the atmosphere may be borne with impunity. Sir James M'Grigor informs us (in his account of the passage of the army in 1801 from India to Egypt), that during the march over the sandy desert of Thebes, where the heat was uniform, though the thermometer in the sol- diers' tents was as high as 118°, the health of the troops was equal to that which they had enjoyed in any former period in India. But there are some forms of disease w^hich are distinctly traceable to heat as their cause. The effect of hot weather in promoting the cutaneous perspiration is notorious. By the same influence the hepatic function is rendered more active. Dr. James John- son first, I think, distinctly pointed out the sympathy or consent that obtains between the liver and the skin, under varying conditions of external warmth. Whatever may be the explanation of the fact, experience has taught us that a high atmospheric temperature, when its operation is continued for some time, has a marked influence upon the liver, increasing the quantity of bile that is secreted, and altering its sen ?ible qualities ; and this disturbance of function is not unfrcquently followed by in- flammation of the gland itself. In this country we witness, almost annually, the effects of a succession of sultry weather, in those attacks of vomiting and diarrhoea which are so common towards the latter end of summer, and in the autumn, espe- cially when the season happens to have been unusually hot ; and which result, appa- rently, from the excessive quantity or a morbid state of the bile. The English cholera (a totally different disorder from that which has of late years been called, most improperly, the cholera), is, as you know, so frequent and general in some years, as to be fairly considered and termed an epidemic disease. In tropical cli- mates the same morbific operation of external heat is still more conspicuous ; leading not only to violent disorder of the stomach and intestines, with the evacuation of large quantities of vitiated and acrid bile, but also to acute inflammation of the liver going on to suppuration, and the formation of large abscesses. These last diseased conditions are extremely rare in this latitude. The yellow complexions of those who return to England after a long residence in India, are to be attributed to that disordered state of the liver, and of its functions, to which such persons are prover- bially subject, and which has in them been brought on by the influence of a hot at- mosphere, operating for a long space of time together. Hepatic affections, acute or chronic, are among the chief diseases to which Europeans, at least, are liable in that eh mate. We have here an example of the distinction I wish you to notice between predis- posing and exciting causes. The heated atmosphere stimulates unduly the secreting function of the liver. Now a secreting organ is never so apt to be affected by any exciting cause of inflammation as when the process of secretion is going on. This law, which I mention by anticipation, depends, no doubt, upon the increased afflux cff blood that accompanies the act of secretion. The excessive activity of the hepatic function constitutes thus a predisposition to inflammation of the liver. The hot at- mosphere, which creates this predisposition, holds the place of a predisposing cause in respect to the inflammation that ensues ; but the exciting cause is exposure to cold : one of the most common and best ascertained exciting causes of inflammation in general. You are not to imagine that there can be no such thing as exposure to cold in a climate where the temperature of the air is habitually above 80°. Dr. James Johnson, in his book on Tropical Climates, observes that on the coast of Coromandel the temperature is steady by day, and the nights are hot : but yet, he say.". 64 CAUSES OF DISEASE. nothing IS more common than exposure to cold in this place. The European soldier or sailor, after the heat occasioned by his employments in the day, strips off bis clothes, and lies opposite a window or port, his shirt wet with perspiration, to enjoy the sea breeze at night. And the same author tells us that the application of cold after or during perspiration, commonl}- produces an attack of hepatitis in some one of its various forms. Now the effect of that kind of exposure here described does not depend upon the actual temperature, but upon the sensation that is produced, and the sensation depends upon the relative temperature ; and there can be no doubt that, under the circumstances mentioned by Dr. Johnson, a strong sensation of cold would be occasioned, even by a sea breeze as warm as 80°, or warmer. Changes of temperature seem to be as readily felt at one part of the thermometric scale, as at another, and in whichever direction they take place. Dr. Walsh states, that while sailing along the coast of Brazil, after having been long accustomed to a temperature of 72°, a strong breeze set in from the sea, and the thermometer fell to 61° ; (i. e., to a point which we should here call temperate ;) " but," he says, " the sense of cold from the sudden transition of temperature was quite painful. After bearing it for some time, shivering on deck, it became intolerable, and we all went below, put on warm clothing, and dreadnoughts — and again appeared with thick woollen jackets and trowsers, as if we had been entering Baffin's Bay, and not a harbour under one of the tropics." It is interesting to compare this statement with Capt. PaiTj'-'s account of a change of temperature at the opposite extreme of the scale, and in the other direction. Having previously said that the thermometer had fallen to 13° below zero in the night of the 21st of October, he goes on thus : — " The wind veering to the southeast on the 24tli and 25th, the thermometer gradually rose to 2:3°. I may possibly incur the charge of affectation in stating that this temperature was much too high to be agreeable to us ; but it was nevertheless the fact, that everybody felt and complained of the change. We had often before remarked that considerable alterations of the tempe- rature of the atmosphere are as sensibly felt by the human frame at a very low part of the scale as in the higher. The difference consists only in this, that a change from 40° upwards to about zero, is usually a very welcome one ; while from zero up- wards to the freezing point, as in the instance just alluded to, it becomes, to persons in our situation, rather an inconvenience than otherwise." Besides the more gradual effects of great heat, direct or indirect, upon the human body, it sometimes operates distinctly as an exciting cause, and gives rise to more sudden attacks of illness. Persons who are exposed to the direct beams of a hot sun, especially during any labour or active exercise, are apt to be affected by what is called the sun-stroke, the coup de soleil, insolation : they fall down insensible, and often die in a very short time. This disorder is common among troops in long marches in India. It is a complaint of which the cause has long been known by the inhabitants of hot climates. There is a case of it related in the Bible. "And Manasses was her husband, of her tribe and kindred, who died in the barley harvest. For, as he stood overseeing them, and bound sheaves in the field, the heat came upon his head, and he fell on his bed, and died in the city of Bethulia." Pathologists are not agreed respecting the intimate nature of this distemper; noi about the manner in which it destroys life. Some regard it as a sort of apoplexy : and hold that death takes place in the way of coma. But the most approved reme- dies of apoplexy — bleeding and other eA'acuations — have not proved successful in relieving it. The natives of India prefer the pouring of cold water upon the head to every other curative measure. Our army sergeants also found that stimulants — rum and water, for instance — answered better than depletion. I have never seen this affection, but I should conjecture that it is more akin to the state we call concus- sion than to true apoplexy. It would appear that the sun's rays act upon the brain hke a shock. The nervous system is suddenly and extensively influenced, and the heart's movements arrested, as in syncope. One of Sir Benjamin Brodie's experi- ments is in favour of this opinion. He placed a rabbit in a basket in an oven, the jemperatuie of which was not more than 150", and it died in a few minutes, without CAUSES OF DISEASE. G5 any apparent suffering. The heart was afterwards found distended with blood, on both sides, as after death by asthenia. Great heat tends also to the production of certain cutaneous diseases : it is said that kw Europeans escape, on their first settUng in tropical cUmates, an eruption of pimples, attended with almost intolerable itching and pricking, and lasting for some weeks. It is called in India the prickly heat. Before considering that most prohfic source of disease which is familiar to the commonest observation in sudden transitions of temperature, let us inquire what are the ascertained effects of extreme cold upon the human frame. Of course I use the term cold in its popular acceptation, as if it were something positive, instead of sig- nifying the mere privation of heat. It is much more convenient to speak of it in this way, and there is no risk of your being misled by my doing so. Now this inquiry is of more practical interest to us than that which is concerned with the immediate effects of extreme heat. Even in this climate medical men are not unfrequently called upon, in cases of injury or death produced by intense cold, either to remedy the morbid conditions it has caused, or to explain the mode and probability of its operation in extinguishing life. The effects of cold, as might well be imagined, are in many respects the direct opposites of the effects of heat. When its application is continued, it acts as a sedative upon the organic functions both of animals and of plants. This appears from the shrinking of the external parts : the superficial arteries become unable to transmit the blood in the usual quantity through the integuments. Hence the skin becomes pale, and contracting round the sebaceous glands and the hair-bulbs, exhi- bits a roughness which is compared to that of the skin of a plucked goose, and is technically called cutis anserina. By the same contraction of the smaller vessels, and repressed circulation, the extreme and projecting parts are diminished in size. Thus, rings which are tight on the fingers while the body is warm, drop off in cold weather — and even the shoes fall from the feet during extreme exposure. The heart with the whole arterial system becomes weak. I have already, when speaking of the contrasted operation of heat, illustrated the withering influence of a continued low atmospheric temperature upon the organic functions, by referring to the dwarfish size of both men and the lower animals, as well as of plants, in cold regions. We have evidence of the same fact in the tardy development of the functions, and par- ticularly, as many travellers affirm, of the sexual functions, in cold climates as corn- pared with hot ; and in the winter torpor of certain animals, which is very analogous with the state of trees and shrubs in that season. I need not tell you that to judge of the effects of mere coldness of the atmosphere we must take the case of the atmosphere at rest. The air is a bad conductor of caloric, and for that reason, a much lower, as well as a much higher degree of temperature, can be borne when it is in a state of quiescence, than when fresh por- tions of it are perpetually brought into contact with the surface of the body by currents of air. " With the thermometer," says Captain Parry, "at -55°," (a most fearful degree of cold, you will observe, 55° below zero, i. e., 87° below the freezing point,) " with the thermometer at -55°, and no wind stirring, the hands may remain uncovered for ten minutes or a quarter of an ho'ur without inconvenience ; while with a fresh breeze, and the thermometer nearly as high as zero, k\v people can keep them exposed so long without considerabk pain." And speaking in another place of the cold, when the thermometer was 49° below zero ; 9 or 10°, that is, below the point at which mercury freezes, he says, " The weather being quite cahn, we walked on shore for an hour without inconvenience, the sensation of cold de- pending: much more on the degree of wind at the time, than on the absolute tempe rature of the atmosphere as indicated by the thermometer. In several of the accounts given of those countries, in which an intense degree of natural cold is experienced, some effects are attributed to which it certainly did not come under our observation in the course of this winter. The first of these is the dreadful sensation said to be. produced in the lungs, causing them to feel as if torn asunder when the air is inhaled at a very low temperature. No such sensation was ever experienced by us. 5 f2 66 CAUSES OF DISEASE. though in going from the cabin into the open air, and vice vcrsct, we were constantly in the habit, for some months, of undergoing a change of from 80° to 100°, and in seviM-a. iuftunces 120' of temperature, in less than one minute: and what is still more extraordinary, noc a single inflammatory complaint (beyond a slight cold, which was cured by common care in a day or two), occurred during this particular period." But when the cold air is in motion, in other words, when there is wind, so that fresh portions of cold air are brought, successi'vly. \n '^mtact with the surface ; or when It is accompanied with moisture, or occurs under other circumstances favour- able to its operation, and to be spoken of more particularly presently ; then cold of a much inferior degree of intensity may very speedily occasion partial or total death. By partial death I mean the loss of vitality in certain parts of the body only — the ears, nose, fingers, toes, and feet. The parts thus affected are said to be frost-bitten: and the mode of managing such accidents falling Avithin the province of surgery, I shall confine my remarks almost entirely to the case where general death — death in its full and ordinary meaning — is either brought about, or impending, in consequence of exposure to cold. One of the earliest effects of extreme cold upon the system at large has been said to be a remarkable and overpowering drowsiness. But I believe you will find that most or all of the persons in whom this torpor has been noticed had not only been exposed to severe cold, but had been using also a great deal of exercise : and per- haps the drowsiness ought to be ascribed, in some measure at least, to that exercise. They who attribute it to the cold alone explain the comatose state in this way. They say that the chilling of the surface and extremities drives the blood inwards, causes it to accumulate internall}^ and increases the flow of blood towards the head. One thing, however, is certain, viz., that drowsiness is not a necessary consequence of exposure to severe cold, although it is a very common consequence. Dr. Currie, in his Medical Reports, gives a very interesting account of the shipwreck of an Ame- rican vessel on the coast of Ireland. Most of the crew, fourteen in all, were im- mersed, to a considerable depth, for twenty-three hours, in water of which the temperature was believed not to exceed 33 or 34° of Fahrenheit : and he states expressly that none of the men were drowsy, and that in no one of the three that perished was death preceded by sleep. The overpowering tendency of cold when combined with fatigue (and perhaps, under certain circumstances, of intense cold alone), to induce sleep, was strikingly exemplified in what befel Dr. Solander among the hills of Terra del Fuego. The story, as given in Captain Cook's Voyages, is well known. Sir Joseph Banks and Dr. Solander had been out botanizing. On their return towards the ship, after various hardships, and after having travelled through swamps for a considerable way, the weather, which had been very fine, became gloomy and cold, with sudden blasts of piercing wind, accompanied by snow. Finding it impossible to get back to the ship before the morning, they resolved to push on through another swamp that lay in their way, into the sheher of a wood, where they might build a wigwam and kindle a fire. Mr. Banks (as he was then) undertook to bring up the rear. Dr. Solander, who had more than once crossed the mountains that divide Sweden from Norway, and who well knew that extreme cold, especially when joined with fatigue, produces a torpor and sleepiness that are almost irresistible, conjured the company to keep moving, whatever pain it might cost them, and whatever relief they might be promised by an inclination to rest. " Whoever sits down" said he, " will sleep, and whoever sleeps will wake no more." Thus at once admonished and alarmed, they set forwards; but they had not gone far before the cold became suddenly so intense as to produce the effects that had been most dreaded. Dr. Solander was the first who found the inclination, against which he had warned others, invincible, and ne insisted on being suffered to lie down. Mr. Banks entreated and remonstrated with him in vain : down he lay upon the ground, ahhough it was covered with snow, and it was with much difficulty that his friend kept him from sleeping. Rich- mond, also, one of the black servants, began to linger in the same manner. When lie was told that if he did not go on he would in a short time be frozen to d^ath, bis CAUSES OF DISEASE. 67 answer was that he desired nothing but to lie down and die. The doctor said he was willing to go on, but that he must first take some sleep ; although but a short time before he had told the company that to sleep was to perish. Mr. Banks and the rest found it impossible to carry them, and there being no remedy, they were both at length suffered to lie down, being partly supported by some bushes ; and in a few minutes they fell into a profound sleep. Soon after some of the people who had been sent forward returned with the welcome news that a fire was kindled about a quarter of a mile on the way. Mr. Banks then endeavoured to wake Dr. Solander, and happily succeeded ; but, though he had not slept five minutes, he had almost lost the use of his hmbs, and the flesh was so shrunk, that his shoes fell from his feet. He consented to go forward with such assistance as could be given him ; but no attempts to relieve poor Richmond were successful. He, together with another black left with him, died. In many instances, before this complete torpor comes on, intense cold has a curi- ous effect upon the nervous system, blunting the sensations, and confusing the intel- lect, and giving to the person exposed to it the appearance of one intoxicated. It is very necessary that you should be aware of this, for there is too much reason to beheve that poor wretches who have been picked up by the constables in the streets at night, during periods of hard frost, have been supposed to be drunk, when, in truth, they were only stupefied by the cold. Such a mistake is most likely to be fatal to them : instead of receiving the attention and treatment proper for persons in their condition, they are hable to be laid aside, by themselves, to sleep off their sup- posed debauch, and the morning finds them corpses. It is not at all improbable that some of you may be called upon to investigate such cases : and as actual instances are more readily impressed upon the memory than any general description, I will read you a short history illustrative of what I have just been saying, from Captain Parry's Journal. " John Pearson * * * had his hands severely frost-bitten, having unfortunately gone without mittens, and with a musket in his hand. A party of our people most providentially found him, although the night was very dark, just as he had fallen down a steep bank of snow, and was beginning to feel that degree of torpor and drowsiness which, if indulged, inevitably proves fatal. When he was brought on board his fingers were quite stiff, and bent into the shape of that part of the musket which he had been carrying : and the frost had so far destroyed the animation in his fingers on one hand, that it was necessary to amputate three of them a short time after." It is what immediately follows this, that I was desirous of pointing out to your attention. "The effect which exposure to severe frost has in benumbing the mental as well as the corporeal faculties, was very striking in this man, as well as in two of the young gentlemen who returned after dark, and of whom we were anxious to make inquiries respecting Pearson. When I sent for them into my cabin, they looked wild, and spoke thick and indistinctly, and it was impossible to draw from them a rational answer to any of our questions. After being on board for a short time, the mental faculties appeared gradually to return with the returning circulation ; and it was not until then that a looker-on could easily persuade himself that they had not been drinking too freely. To those who have been much accustomed to cold coun- tries, this will be no new remark, but I cannot help thinking (and it is with this view that I speak of it) that many a man may have been punished for intoxication, who was only suffering from the benumbing effects of frost : for I have more than once seen our people in a state so exactly resembling that of the most stupid intoxication that I should certainly have charged them with that offence, had I not been quite sure that no possible means were afforded them on Melville Island to procure any thing stronger than snow-water." When persons in this state are suffered to sleep, and the operation of the cyld continues, they become less and less sensible to external impressions, until death closes the scene. CAUSES OF DISEASE. LECTURE VII. Causes of Disease, continued. Laws by tvhich. the operation of Cold upon the Bodily Health is regulated. Circumstances that favour its injurious Effects, and respect, first, the Body itself; secondly, the manner in which the Cold is applied. Modifying influence of certain states of the Mind — of Sleep — of Habit. Means of protection. Influence of the different Seasojis. Impurity of the Air. Hereditary tendencies to Disease. In the last lecture I commenced the consideration of some of the causes of disease. We learned, by the evidence of authentic facts, that the human body is capable of bearing a very high degree of external temperature, for a short time, without detri- ment — and even without much inconvenience ; and we learned — also by the testi- mony of facts — that the body is equally well calculated to endure, under favourable circumstances, a very low degree of atmospheric temperature — or, to speak in popular language, a very intense degree of cold. It appears also that a high, but not extreme, atmospheric temperature, when long continued, has a stimulating effect upon the organic functions, and a depressing or sedative effect upon the animal functions of the body. Long-continued heat predis- poses the body to be injuriously influenced by exposure to cold : the diseases apt to follow such exposure, under such circumstances, being derangement of the hepatic functions — violent disturbances of the stomach and bowels, with a copious discharge of vitiated and acrid bile — and acute inflammation of the hver itself. As more direct consequences of exposure to extreme heat — in other Avords, as examples of disorders of which extreme heat sometimes proves an exciting cause — I mentioned the coup de soldi, and the eruption called the prickly heat. With respect to external cold, I pointed out to you its depressing effects upon the organic functions of the body — and, when it becomes very intense, indeed, its directly sedative influence upon the animal functions also — producing a state resembling intoxication, overpowering drowsiness, and coma, especially when the cold has had an auxiliary in fatigue ; and, ultimately, death itself. I hardly need say that the effect of external cold upon the body, within certain limits of intensity and duration, is totally different from all this. When it is not intense — or when, though intense, it is applied for a short time only — or when its refrigerating and sedative properties can be sufficiently counteracted by exercise and warm clothing — cold becomes a tonic; stimulating, refreshing, and invigorating both mind and body. Instead of benumbing, it heightens the sensibility ; instead of stupefying, it clears and sharpens the faculties, and bestows alacrity and cheerful- ness ot spirit; and in this way, among others, cold becomes a very important curative agent. Here also, therefore, the contrast obtains; a high external temperature relaxes and depresses — a low one, under the circumstances just mentioned, braces and enlivens. Nevertheless, exposure to cold is one of the most common causes of various com- plaints. Many or most of the internal inflammations acknowledge cold as their ordinary exciting cause. Acute rheumatism has, perhaps, no other external origin. Apoplexy and palsy, and dropsy, are its frequent consequences. "With the excep- tion," says Dr. Bateman, in his Observations on the Diseases of London, " with the exception of a small number of diseases occasioned by unwholesome occupations, and by the contagions, the great mass of human malai-^ in this metropolis is refer- able to the climate or state of the seasons, and to intemperance : but, of these two causes, the vicissitudes of the weather, especially its cold, are by far the most prolific bources of mischief." It must, therefore, to every one who is engaged, or likely to be engaged, in the practice of physic, be a matter of first-rate importance, and of great interest, to asce-- ta'n the circumstances under which the application of cold is the most prejudicial, or I CAUSES OF DISEASE. .69 has the greatest influence upon the body — as well as the means by which the bad effects of exposure to cold may often, in a great degree, be prevented. There are some short but valuable hints upon this subject in Cu lien's First Lines. The late Dr. Currie, of Liverpool, was, however, the first person who dis- tinctly pointed out the laws that regulate the operation of cold as a cause of health and disease. Of the circumstances which favour the morbific effects of cold, some relate to the condition of the body itself, some to the particular manner in which the cold is applied. The former are predisposing circumstances; the latter accessory. We will glance at these in succession. It has long been a popular, as well as a professional axiom, that sudden vicissi- tudes of temperature are dangerous ; that a previous hot state of the body augments the hurtful effect of cold, whether applied externally or internally. But the proposi- tion thus broadly stated is not universally true. It is well known that the inhabitants of Russia are in the habit, while reeking from their vapour baths, of rolling imme- diately in the snow, or plunging into cold water, without suffering from the change. Sir Charles Blagden, describing some of the experiments which I mentioned in the last lecture, says, " During the whole day we passed out of the heated room (of which the temperature ranged from 240° to 2(50°), after every experiment, imme- diately into the cold air without any precaution. After exposing our naked bodies to the heat, and sweating most violently, we instantly went into a cold room, and stayed there even some minutes before we began to dress, yet no one received the least injury." And Captain Scoresby, speaking of the arctic regions, tells us that he has often gone from the breakfast-room of the vessel, where the temperature was 50° or 60°, to the mast-head, where it was only 10°, without any additional clothing, except a cap — " yet," says he, " I never received any injury, and seldom much inconvenience from the uncommon transition." It is plain, therefore, that the proposition which assigns danger to sudden vicissi- tudes of temperature requires limitation. The effects of a sudden descent from one point to another in the scale of atmospheric temperature vary according to the state of the body at the time. Without going into any physiological discussion respecting the source of animal heat, I may just remind you of the faculty of evolving heat possessed by man and the warm-blooded animals ; by which faculty very nearly the same degree of inward temperature is steadily maintained under very different degrees of outward temperature. If the external temperature be lower than that of the body, the caloric thereby carried off' is speedily replaced, in a healthy adult, by this evolution of heat from within, aided by clothing, or by exercise. When the external temperature approaches the standard heat of the body, sweat soon breaks forth, and the superfluous heat is removed by evaporation : for so constant is the internal evolution of caloric, that an atmosphere which does not as constantly abstract any of it is excessively incommoding : an external temperature of 98°, which is about the average heat of the blood in man, is, as you know, extremely oppressive. The terms hot, warm, cool, cold, as applied to the surrounding air, are regulated by the sensations that it produces upon the avepage of persons. If the heat be carried off as fast as it is generated, and no faster, no particular sensation is felt, and the bodily powers are neither stimulated nor exhausted. This equilibrium is maintained (sup- posing that no extraordinary exertions are made), when the thermometer stands at 62°, or thereabouts. We call that point in the scale temperate. All degrees above that point, up to 70, are reckoned 7varm ; all above 70, hot. Descending in the scale, we speak of the temperature denoted by any degree between the 60th and the 50th, as being cool ; and every lower degree of temperature is cold. 1 am speaking of the average of healthy men : for remarkable diversities occur among individuals in respect to the epithets Avhich they assign, under the guidance of their sensations, tu particular degrees of the thermometric scale ; their sensations differing according to the power which their constitutions respectively possess of evolving heat. Now if this power of evolving heat, thus inherent in the system, be entire, and active, aiid persistent — if it have not been weakened by any of those circumstances which ai«3 known to have the effect of weakening it — no peril need attend even violent 'liters- /O CAUSES OF DISEASE. tions of external temperature. Unusual heat of the body at the time when the cold is applied, so far from implying danger, is really the condition of safety, provided the heat is steady and permanent. You may read, in Dr. Currie's book, numerous instances of the cold affusion being employed in the hot stage of fever, and particu- larly in cases of scarlet fever, not only with impunity, but with great benefit to the patient. The same holds true of the application of cold when the body has been heated by exercise — and, indeed, whatever may have been the cause of the increased heat — provided always that that cause remains steadily in action, that there is no local disease, and that the body is not fatigued, and fast losing its heat. But if a person be already exhausted and weakened by exercise — if he be sweating and rapidlv parting with his heat — and especially if the exercise be over, and he remain at rest immediately after and during the application of the cold — then it becomes highly perilous, and likely to produce internal mischief. The more correct statement, therefore, respecting the application of cold is, that it is dangerous — not when the body is koi — but when the body is cooling after havi7ig been heated. This principle obtains alike, I say, whether the cold be applied externally or internally; to the surface of the bodj', or to the mucous membrane of the stomach. Very many instances are recorded of death taking place immediately after a copious draught of cold water. I beheve it will be found that in all these cases, the body after having been much heated and enfeebled by severe exertion, was losing its preternatural heat from profuse perspiration, and, in general, from the cessation also of the exertion by which this heat was accumulated. Celsus was aware of the danger: " ex labore sudanti frigida potio perniciosissima est." The fatal influence of cold water thus apphed was experienced, on a large scale, among the troops of Alexander the Great, upon their reaching the banks of the River Oxvis, thirsty, fatigued, and perspiring from their toilsome march of forty-six miles across the scorching sands of the desert. According to Quintus Curtius, Alexander lost more of his soldiers on that occasion than in any one of his battles. " Sed qui intempe- rantius hauserant intercluso spiritu extincti sunt; multoque major horum numerua fuit, quam ullo amiserat prrelio." Dr. Currie relates a striking example, which fell under his own observation, of sudden death thus produced. A young man had been playing a severe match at fives, and had violently heated himself. When it was over he sat down on the ground panting for breath, and covered with perspiration. In this state he called to a servant to bring him a pitcher of cold water just drawn from a neighbouring pump. After holding it in his hand a little while, till he recovered his breath, he put it to his mouth, and drank a large quantity at once. He laid his head on his shoulder, and bent forwards ; his countenance became pale, his breath laborious, and in a few minutes he expired. I may take the opportunit}'^ of telling you that the remedies to be administered, when life is in jeopardy from this cause, are warmth to the epigastrium ; and lauda- num in free doses. If death does not speedily follow the external or internal application of cold to the body under the untoward circumstances I have described, inflammation of some internal part is very apt to arise. By attending to the principles now laid down, you will be enabled to furnish those whom it may be your business to advise with many useful suggestions, and to cau- tion them against some common mistakes : mistaKes which have had their origin in the unqualified credit given to the maxim, that sudden vicissitudes of external tem- perature, and exposure to cold while the body is hot, are dangerous ; whereas these things are dangerous under certain circumstances only. Thus, you may tell the sportsman that wet feet, or a wet skin, need cause him no apprehension, so that he continue.* in active exercise ; and changes his clothes, and avoids all further appU- cation of cold, as soon as his exercise ends. You may admonish the bather that after walking in a hot day to the river's side, he had better not wait to cool himself a httle oefore he plunges into the stream ; and in like manner you may venture to counsel the young lady who has heated herself with dancing, not to linger in the entrance hall till the glow has somewhat subsided, but to make the best of her way CAUSES OF DISEASE. 71 to her carriage, and thence to her bed ; and you may tell your male friends, who happen to be similarly circumstanced, that the best thing they can do is to walk briskly home in their great-coats. The main points to be remembered are, that "the heat which is preternaturally accumulated by exercise is held with little tenacity, is dissipated by profuse perspiration, and is speedily lost when to this perspiration is added a state of rest after fatigue ;" and that, in these circumstances, the application of cold is most apt to be prejudicial. Among the circumstances which favour the morbific effects of cold, and relate to the condition of the body itself, is to be included — for reasons that must now be obvious to you — whatever has the effect of weakening the system, and so diminish- ing its capability of evolving heat. The most common of these debilitating circum- stances are enumerated by Cullen — " fasting, evacuations, fatigue, a last night's debauch, excess in venery, long watching, much study, rest immediately after great exercise, sleep, and preceding disease." All these, you will observe, tend to lessen the vigour of the circulation, and to depress the power of generating heat. Con- sistent with the same principle is the fact ascertained by Dr. M. Edwards, that the faculty of evolving heat is very feeble in old persons, and in the newly born ; it being in these classes that we find the greatest number of victims to the power of cold. The bad effects of cold upon the system depend partly upon the intensity of the sensation it produces — but still more upon the duration of that sensation. We are seldom the worse for a momentary sensation of cold, however lively it may have been ; whereas even slight feelings of chilliness, if long protracted, are apt to termi- nate in some form of disease. By the help of this principle we may explain most of the circumstances which, relating to the manner in which the cold is applied, have been found by experience to aggravate its hurtful influence. Cold is more likely, cxteris paribus, to prove injurious when it is applied by a wind, or current of air. The sensation of cold is sustained by the continual acces- sion of fresh particles of frigid air to the surface of the body. Some striking facts in illustration of the refrigerating and depressing effects of a stream of cold air were mentioned in the last lecture. Again, the injurious operation of cold is augmented, when it is accompanied with moisture. Wetness is notoriously the worst way in which cold can be applied. The contact of wet or damp clothes with the skin both increases and prolongs the sensa- tion of cold. For the same reason, a cold foggy atmosphere is more prejudicial than a clear, and therefore drier one, of the same temperature. The heat of the body is abstracted more rapidly than it is generated from within, and if it be not replaced by exercise, or cordials, the balance of the circulation is deranged, and internal mis- chief often follows. The same principles serve to illustrate the effect of certain other circumstances, adverted to by Cullen, as being counteractive of the morbific tendency of exposure to cold: "passions engaging a close attention to one object," — "that state of the body in which sensibility is greatly diminished, as in maniacs," — and "the power of habit." These circumstances are worthy of a moment's notice. Impressions which are unheeded are unfelt and inoperative. As it is scarcely possible, when the attention is engrossed by bodily pain, to carry on any connected train of thought — so on the other hand the senses become impassive in proportion as the mind is fixed upon some absorbing subject of reflection, or enchained by some powerful emotion : impressions made upon the organs of sense are no longer taken notice of; the corresponding sensations, if they are excited at all, are not remem- bered, and the effect of such impressions is as if they had never been ; they are no! followed by the usual consequences. Persons gasping for breath in spasmoaic asthma will remain for hours at an open window, with scarcely any clothing during severe frost, and without suffering from the cold ; their attention is so anxiously and exclusively bestowed upon the distress in their breathing, that the coldness of the an is unnoticed and unperceived, and has no sensible effect. For where the greater malady is fixed The lesser V anstrr.o Mt. 72 CAUSES OF DISEASE. The morbific effect of cold upon the system is certainly modified by the degree of attention that is paid to the sensation it excites. Upon the veiy same principle may be explained the impunity with which some maniacs undergo exposure to cold — even when suffering no fever which might regenerate the lost heat. "I have seen," says Dr. Carrie, "a young woman, once of the greatest delicacy of frame, struck with madness, lie all night on a cold floor, with hardly the covering that decency requires, when the water was frozen on the table by her, and the milk that she was to feed on Avas a mass of ice." Sleep is enumerated by Dr. Cullen among those conditions of the body which diminish its power of resisting cold. And certainly cold is very readily caught (as the phrase is), when its causes are present, during sleep. But while we sleep sensa- tion is in a great measure suspended. This would seem, therefore, to furnish a contradiction to the principle that the effect of cold upon the bodily health depends upon the strength and the duration of the sensation excited by it. Dr. Alison — I speak from recollection of his observations heard many years ago — disposes of this difficulty by affirming that the sleeper who thus suffers, does really feel, and is con- scious of, the sensation of cold, and that it mingles with and probably suggests his dreams. Lord Brougham, in his Discourse of Natural Theology, gives a very lively picture of dreams so excited — drawn, as 1 should guess, from his own expe- rience. Probably somethingf of the same kind has occurred to most of us. " Every one knows (he says) the effect of a bottle of hot water, applied during sleep, to the soles of the feet : you instantly dream of walking over hot mould, or ashes, or a stream of lava, or having your feet burnt by coming too near the fire. But the efl^ect of falling asleep in a stream of cold air, as in an open carriage, varies this experiment in a very interesting, and indeed instructive manner : you will, instantly that the wind begins to blow, dream of being upon some exposed point, and anxious for shelter, but unable to reach it ; then you are on the deck of a ship, suffering from the gale — you run behind a sail for shelter, and the wind changes, so that it still blows upon you ; you are driven to the cabin, but the ladder is removed, or the door locked. Presently you are on shore in a house with all the windows open, and endeavour to shut them in vain ; or, seeing a smith's forge, you are attracted by the fire, and suddenly a hundred bellows play upon it, and extinguish it in an instant, but fill the whole smithy with their blast, till you are as cold as on the road." Certain it is, that though while sleeping we are not sensible of, or (what perhaps is the same thing) do not remember, ordinary impressions, we are nevertheless con- scious of unusual sensations ; so that the facility with which we take cold during sleep is no real exception to the general law, that the sensation produced by cold is concerned in its injurious effects. The last of the accessory circumstances mentioned by Cullen is " the power of habit." No one can doubt the effect of custom in enabling the body to resist the operation of cold, who has had opportunities of observing how differently an inclement temperature is borne by persons whose employments oblige them to live much under the open sky, as shepherds, sailors, stage-coachmen ; and by such as pursue in-door occupations — mechanics, tailors, shopmen, and the like. Pro- bably the sensibihty of the surface is blunted by habitual exposure. We may believe too that the purer air breathed by the out-door labourer, and his more active life, confer a more vigorous state of health, and endow him with an ampler faculty of evolving animal heat. The fact is unquestionable ; and we may sometimes turn our knowledge of it to good account, in gradually fortifying the system against the influence of cold that cannot be avoided. An ill-directed application of this prin- ciple has led, however, to grave errors, and cost many lives. You will now and then hear parents talk of hardening their children, by causing them to brave all sorts of weather, by teachintr them to be indifferent about variations of temperature, to sit in winter time Avithout a fire in the room, and to despise great-coats, flannel, and other additions to their usual dress. Fearing to render them effeminate by wver care and cockering, they run into the opposite and more dangerous extreme. Tins process is often attempted with children originally delicate, and to such it is doubly hazardous. During the early periods of life the inherent protective power CAUSES OF DISEASE. 73 of evolving heat is comparatively feeble ; and in this climate it requires to be care- fully cherished. The experiment of hardening should never be tried on any child or person who is ailing or unsound ; who shows any sign of present disease ; or any marked dis- position to future, and especially to scrofulous, disease. Whenever it is tried it must be conducted in conformity with the principles already laid down. The subject of the experiment must be sufficiently clothed, and he must not fail to use such ex- ercise during the exposure as may be requisite to excite and sustain the adequate generation of animal heat. An abiding sense even of chilliness must never be aimed at nor permitted. The most direct and certain mode of fortifying the body against injury from ac cidental exposure to cold, is afforded by the use of the cold bath, and especially of the shower bath. When this is regularly taken in the morning, the surface of the body becomes inured to a degree of cold greater than it is Hkely to encounter during the remainder of the day. It is fortunate that we have an easy criterion of the pro- priety of continuing this expedient. When the sense of cold does not remain long, and is followed by a glow of warmth, the cold shower bath is sure to do good. If, however, after the bath, the person suffers headache, and continues to be chilly, languid, and uncomfortable, it should at once be given up as useless, and even hazardous. By observing these simple rules, a healthy child may be made hardy also, without the risk which their neglect would impose, of damage to his bodily fabric, and of abbreviating, by what was meant to prolong, his mortal span. Closely connected with the effects of temperature upon the health is the influence of the different seasons of the year. A few remarks upon that influence, as it is witnessed in our own climate and country, may properly conclude our present subject. It is open to the commonest observation that the general health of the community fluctuates with the changing seasons. Catarrhs, and coughs, and pectoral complaints of all kinds, are most apt to commence, or to grow worse, in the winter and spring months ; while bowel-complaints are more numerous and distressing in the summer and autumn. The mucous membranes of the air-passages sympathize with the skin under the agency of external cold ; those of the stomach and intestines under that of continued atmospheric heat. The thoracic disorders are more serious and fatal than the abdominal. Various other maladies are likewise aggravated by cold, or by vicissitudes of temperature. Hence the mortality of the winter is always larger than that of the summer ; unless, mdeed, this rule happens to be disturbed by the intervention of some widely- spread epidemic. I am not sure that the superior salubrity of the hotter over the colder portion of the year is generally acknowledged, even in this age of enlight ment. It is the cold that, more than any other element of the weather, occasions the difference. There are two small pubhcations by the present Dr. Heberden, to which I would direct your attention, as being singularly instructive upon these points. One you will find in the eighty-sixth volume of the Philosophical Transactions : Of the influence of Cold vpon the Health of the inhabitants of London. The other is a separate pamphlet : Observations on the Increase and Decrease of differoxt Diseases. From a number of tables, framed chiefly upon the weekly bills of mortality, Dt- Heberden (in the last-named paper) draws the conclusion that the whole number of deaths is greatest in Januarj', February, and March, and least in June, July, and August. This is contrary to the notions of the ancients, and perhaps of many of the moderns iJso. Celsus says, " Tgitur saluberrimum ver est ; proxime deinde ab hoc. hiems ; periculosior testes; autumnus longe periculosissimus." The (iifference of place may perhaps account for this difference of opinion. Celsui 'ived m Rome. That city, and the surrounding district, abound in malaria; a caus« a 74 CAUSES OF DISEASE. of disease which, happily, is now scarcely known in London, but which, wherevei it exists, operates most powerfully and most extensively during the autumn. The comparative healthiness of the several seasons may doubtless be disturbed, and even reversed, by endemic peculiarities of this kind. In his paper in the Philosophical Transactions, Dr. Heberden compares the number of deaths that took place in London in January, 1795, which was an unusually severe month, Avith the number that occurred in January, 1796, which was an un- commonly mild month. Of those two successive Avinters one Avas the coldest, and the other the Avarmest, of Avhich any regular account had been kept in this counlr}'. In the month of January, 1795, the thermometer, upon an average, stood at 2;^° in the morning, and 29°.4 in the afternoon; ahvays, you Avill observe, beloAv the freezing point. In the same month in 1796, it stood at 43^.5 in the morning, and at 50° in the afternoon ; ahvays much above the freezing point. The average differ- ence in the tAvo months AA-as more than 20°. In the fiA^e AA-eeks beginning upon January 1st, 1795, there Avere 2823 deaths: in the five AA'eeks beginning upon January 1st, 1796, there were only 1471. The difference, 1352, is enormous. The mortality in the former year was nearly double of that in the latter. One object Avhich Dr. Heberden had in vieAv in making this comparison Avas to disabuse his countrymen of the notion that, in Avinter, frosty Aveather is more favour- able to health than mild Aveather ; a notion Avhich has been embodied in the pro- verb, that " a green Christinas makes a fat churchyard." It is very instructive to remark in Avhat classes of persons the injurious effects of the severe Aveather of winter is most felt. The increased mortality Avas found to be chiefly among the very young, and the very old ; in other Avords, among those in whom the recuperative poAver of generating heat is the feeblest. In January, 1795, there AA'-ere in London 717 deaths of persons above sixty years old, Avhile in January, 1796, there Avere only 153 such deaths; or scarcely more than one-fifth of the former number. I have often been struck by the unusual length of the neAA-spaper obituaries during periods of hard frost ; and by observing how man}' of the individuals Avhose deaths they record were far adA'anced in years. Dr. Heberden remarks that among per- sons older than sixty, the tide of mortality, as measured by the AA"eekly bills, folloAA's regularly the degree of coldness of the weather; so that any one accustomed to examine these lists may form a tolerably accurate judgment of the severity of any of our Avintcr months, by noting the ratio of the mortality in persons aboA'e sixty. The deaths from asthma (under Avhich vague term all kinds of pectoral disorder attended with shortness of breath appear to have been included) Avere 249 in Janu- ary, 1795; only 29 in January, 1796. In the former of these months there Avere 825 deaths attributed to consumption ; in the latter, 342. All this accords AA'ith what I mentioned before of the effect of cold AA'eather in producing or exasperating diseases of the respiratory organs. One of the conclusions deduced by Dr. Heberden from his examination of the bills of mortality is, that "the number of deaths bj' palsies and apoplexies is in this country al\A'ays greatest in Avinter." There are intelligible reasons for this. When the surface is chilled, and the blood driven out of the superficial vessels by the cold, it must accumulate in internal parts, and so press Avilh increased force toAA-ards the head. And there is another reason for the frequency of these affections in the winter season : it is, as Ave have seen, the season of pectoral complaints, and of em barrasscd respiration. DA'spncra and fits of coughing greatly impede the return of the blood from the head through the \'eins : and cerebral congestion tends m the production of cerebral hemorrhage, especially Avhen the arteries of the bnuii are diseased ; and they often are so. Accordingly Ave find that in January, 1795, there were fifty-tAvo deaths from apoplexy and palsy ; Avhile in January, 1796, the num- ber AA-as only thirty-one. Since these lectures were first deliA^ered, three Jinnnal Reports of the Registrar- General of Births, Marriuges, and Deaths in England, have been printed, and liberally circulated, by the obliging attention of Mr. Lister, among the members of CAUSES OF DISEASE. 75 our protession. Much of the practical information afforded by these interesting vohinnes is rendered accessible, even to a cursory reader, by Mr. Farr's able analy- sis of the registered facts ; which amply illustrate and confirm most of the inferences drawn by Dr. Heberden from the old tables of mortality. For example, under the head of "Influence of the seasons," Mr. Farr shows, by numerical statements, especially in the ildrd Annual Report, that in London the degree to which the mean monthly temperature descends in December, January, or February, determines, to a great extent, the mortality of the winter. Again, " The causes of death which prove most fatal in the cold months belong principally to the pulmonary class, and the cerebral diseases of the aged: those which prove most fatal in summer belong to diseases of the bowels." The mean temperature of the external atmosphere in London is 505°. In pro- portion as the mean temperature of the day and night falls beneath that point, the mortality progressively increases. "The rise in the mortality," says Mr. Farr, "is immediate ; but the effects of the low temperature go on accumulating, and continue to be felt thirty or forty days after the extremities of the cold have passed away. The cold destroys a certain number of persons rapidly; and in others occasions diseases which prove fatal in a month or six weeks. The practical lesson taught by these facts is obvious. A great number of the aged, and of those afflicted with difficulty of breathing, cannot resist cold sunk so low as 32^. The temperature of the atmosphere in which they sleep can never safely descend lower than 40°: for if the cold that freezes water in their chamber does not freeze their blood, it impedes respiration, and life ceases when the blood heat has sunk a few degrees below the standard." The immense body of authentic facts thus yearly accumulating in these Reports constitute most valuable contributions to the science of vital statistics ; and cannot fail to throw hght upon the sources, and to point towards the prevention, of many very dangerous and destructive disorders. To ascertain the causes of any disease, and to display them before the public mind, are, I repeat, large steps towards the ultimate removal of such as human endeavours are competent to remove. You may trace the influence of the seasons, not only in the prevalence of parti- cular diseases in certain portions of the year, but also in the character of other dis- orders that are liable to occur in all periods of the year alike ; in the character, for example, of fevers. In the majority of cases of continued fever, you will find that the pectoral symptoms are most troublesome in the spring, and the abdominal symp- toms in the autumn. It is said, also, but I do not know that this is so generally true, that affections of the head, in continued fever, are more frequent and severe in the winter than at other periods of the year. Mere impurity of the air — by which I mean impurity that does not result from the admixture of any specific poison, such as the marsh poison, and the various con- tagions — is a powerful predisposing cause of disease. The prejudicial effect of im- pure air is seen, on a large scale, by comparing the inhabitants of great towns, in respect of health and longevity, with those who live in the country. If we again refer to Mr. Farr's calculations, founded upon the returns made to the Registrar- General, we find it stated, in the third Annual Report, that in cities, as contrasted with rural districts, the deaths from consumption are increased 24 per cent. ; those from typhus 55 per cent. ; those from childbirth 59 per cent. ; and so of several other disorders. " The diseases chiefly incidental to childhood are twice as fatal in the town districts as they are in the country." The mean duration of life in the two classes of districts differs nearly 17 years ; being in the proportion of 55 years {country) to 38 years (toivns). These differences we can explain only by attributing them to the weakening influ ence of impure air, and the want of sufficient exercise: for, as Dr. Alison has remarked, "it is hardly possible to observe separately the effect on the animal eco- nomy of deficiency of exercise, and deficiency of fresh air, these two causes being very generally applied together. But it is perfectly ascertained on an extensive Bcale, in regard to the inhabitants of large and crowded cities as compared with th« 76 CAUSES OF DISEASE. rural population of the same climate, that their mortalitj' is very much greater, especially in early life — and the probability of life very much less." There is one circumstance which shows that impure air is the more noxious agent of the two, namely, the great comparative mortahty, in towns, of children under two years of age, even although they get as much exercise as their time of life would allow of anywhere. The noxious and depressing influence of vitiated air is made strikingly manifest by the effect of removal to a purer atmosphere. We are continually obliged to recommend " change of air" to our patients. We advise them to go out of London, that their recovery from acute disorders may be accelerated, and that they may regain the degree of general strength which is necessary to the cure of many chro- nic complaints ; of all those especially that require the use of tonic medicines, among which class of remedies no one is so effectual, in constitutions that have been weak- ened by a town life, as migration to the clear and pure air of the country. It is necessary, however, to remember that although impure air has most unques- tionably a very hurtful effect upon the general health, there is no specific diseas*^ which can be distinctly traced to it as an exciting cause. It is as a predisposing in- fluence that the impurity operates. For instance, it never generates (as I believe) continued fever, yet it will most certainly aggravate the sjmiptoms, and favour the propagation, and augment the mortality, of that, and of other diseases, in a great degree. If there be" any diseased condition that is strictly the product of impure air, it is scrofula. Scrofula (as I shall presently show you) depends in part upon here- ditary constitution ; it partly arises also from exposure to cold and wet ; but there is much reason for beheving that impure air is a very powerful agent in caUing scrofula into action, and in aggravating the strumous diathesis. [This statement of Dr. W. is not strictly correct. That specific disease is produced by im- pure air is a fact established by the most abundant and conclusive testimony. Wherever we find individuals crowded together in localities where filth is accumulated, and a free venti- lation is prevented, there, also, we find diseases to prevail, evidently dependent upon the impure and stagnant state of the atmosphere ; though other causes, no doubt, conspire to their development, and to augment their malignancy. It cannot, certainly, be denied, that it is to the impurity of the air, produced by decomposition of the exhalations and excretions of indi- viduals regardless of personal and domestic cleanliness, when crowded together in confined apartments, that we are to refer the production of the typhus fever, so apt to prevail under such circumstances, as well as the typhoid character of most of the diseases with which such individuals may become aflected from other causes. Typhus fever, we know, is particularly liable to be produced in camps, barracks, hospitals, prisons, besieged fortresses, and on board of ships, whenever in such situations a number of persons are crowded together, and cleanli- ness and ventilation are neglected ; and it is seldom, if ever, generated when the sources of impurity are carefully removed, and a free and constant ventilation secured. The dependence of yellow fever upon an impure state of the atmosphere is shown by the fact, that it is almost exclusively confined to towns or other situations where the population is dense, and many causes exist calculated to impair the purity of the atmosphere; and by its being very generally confined, when it occurs in cities, to the vicinity of the wharves and docks, into which the common sewers empty and various impurities are allowed to accu- mulate, and which, when acted upon by heat, cannot fail to give rise to a miasm, by which the purity of the surrounding atmosphere is very materially impaired. In regaird to the agency of an impure air "in calling scrofula into action, and in aggravating the strumous diathesis," the evidence is by no means so strong as the language of Dr. W. would imply. Dr. Phillips, h\ his late work on the Nature and Causes of Scrofula, has examined this question with a great deal of care; his conclusions are, that '-if we regard scrofula in the widest signification of the term, so as to include all diseases in which a tubercle-like deposit seems to determine the loss of life, namely, phthisis, scrofula, and tabes mesenterica, the result may be thus stated : — The mortality from those diseases is larger in towns than in country districts, but it is not found that the densest portion of a town is that in which the mortality is the largest. Thus, in the four districts in London in which the crowding is the greatest, the average deaths from these affections is under 0.46, whilst in four othfr districts, in which there is less crowding, the average deaUis amount to 0.51. and in Fietiinal Green they are under 0.40. If we now narrow the question to the influence of a residence in towns and bad air in developing scrofula alone, the result may be thus stated : — In the four years' mortality included in the fifth report of the Registrar-General, namely, from i?,38 to loll, in a district comprising towns having a population of 3,759,186, the deaths from scrofula amounted to 758 ; and in a district having a rural population o£ 3,440,501 '^uls, CAUSES OF DISEASE. 77 the deaths amounted to 1333 ; or, to state the question more simply, the proportion of deaths from scrofula to 1,000,000 living was, in the town districts, 50 per annum, and in the country districts, 97. And if, with scrofula, tabes mesenterica be included, the numbers would stand as 122 deaths in towns to IGO deaths in the country. Again, let us observe the south-eastern, the south midland, and the south-western districts ; there the mortality from scrofula amounted to 1 in 12,000, whilst in the densely-packed factory districts of Yorkshire, Lancashire, and Cheshire, the mortality from scrofula will be seen to be less than half the preceding mor- tality from the same cause, namely, about 1 in 25,000. And suppose we go one step further, and compare one portion of the metropolis with another, we find that the total deaths from scrofula in the metropolis, when compared with the population, are as 5-6 to 100,000 living, whilst in tlie most densely populated districts, comprising the East and West London Union, the Strand, Holborn, or St. Giles, Whitechapel, and Bethnal Green, the proportion is as 51 to 100,000; Bethnal Green being represented by 4-8, and Whitechapel by 4-7 to 100,000 living. So in the low, dense, and poor districts of Bethnal Green, Poplar, Stepney, Whitechapel, Shoreditch, Westminster, Bermondsey, Rotherhithe, and Lambeth, with a total mortality amounting to 21,522, the deaths from scrofula are 45, or 1 in 478; while in the district em- bracing Kensington, St. George's, Hanover Square, and St. Marylebone, with a total mortality amounting to 14,734, the deaths from scrofula are 30, or 1 in 490. Thus the difference in these districts is scarcely appreciable ; but if we compare the western districts of the me- tropolis with those of Bethnal Green, Shoreditch, and Whitechapel, we find that the propor- tion of deaths from scrofula to the general mortality in the former is as 1 to 490, and in the latter to as 1 to 1000. Again, if from considering the influence of localities, we turn to the csomparative mortality of the sexes, it will be found that 20 per cent, more boys die of scro- fula than girls ; and yet it must be admitted that girls are more exposed than boys to the eifects, whatever they may be, of crowded rooms, and exclusion from out-door employ- ments.'" — C] I have entered the more fully into the consideration of certain states of the atmos- phere, its extremes and its variations of temperature, and its impurity, as causes of disease, because there is no part of the course in which I could more conveniently introduce them. Most of the other causes of disease, enumerated in my last lec- ture, will be discussed in connection with the disorders to which they give birth : malaria, for example, when I speak of ague ; contagions, when we come to the exanthemata and to continued fever ; epidemic influences, with epidemic distem- pers ; improper or insufficient diet, and intemperance generally, with indigestion, and the disorders of the alimentary canal ; and so on. There is, however, one re- markable predisposing cause of disease, a few observations upon which may serve to fill up the little that remains of the present hour. I mean, that disposition to cer- tain diseases which is apt to descend from parents to children : hereditary tendencies to disease. We must distinguish between susceptibility of disease, and a tendency to disease. In one sense all persons are born with a predisposition to most forms of disorder. No one is protected by nature against inflammation when the causes of inflammation come into play. Poisons of various kinds, and specific contagions, which indeed are poisons, operate with tolerable uniformity upon cill men alike. But there are certain complaints which we may separate in this respect from the others : which complaints some persons have a tendency to, and some have not. The tendency is sometimes strong and evident, sometimes feeble and faintly marked ; sometimes it displays itself in the midst of circumstances the most favourable lo health, sometimes it requires for its development conditions the most adverse and trying. To mention some of these diseases : scrofula, which I soon shall describe more particularly, gout, mania, and (I believe I may add) spasmodic asthma. Not only is a disposition to these complaints strikingly pronounced in some per- sons, but other persons appear wholly free from such a tendency — nay, even devoid of the susceptibility of them. Gout, in those capable of it, may be acquired by habits, as it may be repressed and prevented by the opposite habits. The habits that, in certain persons, bring it on, are the intemperate use of the luxuries of the table, and an indolent or sedentary manner of life : but there are many people in whom no amount of rich living or idleness will generate gout. So there are some m whom no exposure to impure air, cold, and wet, and no privations — in other words, no appliance of the influences calculated to bring the strumous diathesis into play — will ever produce any form of scrofula ; will ever render them consumptive g2 78 CAUSES OF DISEASE. for instance, Consumption being one of the most common and fatal shapes of scro- fulous disease. There are many who endure the utmost distress and excitement of mind, yet never become insane. There are many who never become afliicted with asthma, although surrounded by the most powerful exciting causes of that complaint. Now with respect to these diseases, and perhaps a few others, it is matter of tact that they occur much more frequently in persons, some one or more of whose an- cestors have suffered from them, than in other persons : the tendency is transmitted, is hereditary. That the circumstances of the parents do influence the physical characters of the children, no one can doubt : it is matter of daily observation ; and one of the best possible illustrations of the fact is to be found in what are called family-likenesses. We see children resembling their father, or their mother ; or both parents at once, as mulaltoes. It has been suggested that the similarity in features and expression, and even in moral chamcter, which cannot be denied to exist, may be ascribed to training and imitation. But allowing something to that cause, it cannot be all. It was, I re- member, a common remark when I was at Cambridge, that the followers and admirers of a very good man, the late Mr. Simeon, appeared to come at last to re- semble him. So man and v/ife are sometimes fancied to grow like each other. That is, the same prevailing cast of thought and feeling, the idem sentire et idem velle, may give such an habitual expression and character to the countenance, as shall con- stitute, to superficial observers, a likeness. But there are family-hkenesses which will not admit of such an explanation as this : similarities in the shape or size, or disposition of peculiar features. Every one has heard of, or may remark in por- traits, the hereditary thick lip of the imperial house of Austria. Many persons now living have had the opportunity of tracing the lineaments of our own royal family through at least three generations. The sisters of one of our English dukes are re- markably handsome young women, and bear, to this day, a striking resemblance to the portraits of their beautiful ancestress, the celebrated Nell Gwyn. And inde- pendently of the general cast of features, we trace these family-likenesses in minute or unequivocal particulars, as the colour of the hair and eyes, the shape of the limbs, the stature of the body, and so on : nay, in more decided peculiarities than these, in points of unusual formation. You have heard, probably, of the American calcu- lating boy, Zerah Colburn. A great number of individuals of his family, descended from a common ancestor, had six fingers and six toes instead of five. The pecu- liarity was transmitted through four successive generations ; and probably, could his pedigree have been further traced, through many more. I am myself acquainted with a gentleman who had the misfortune some years ago to have a bastard child laid to his charge. At first he had some misgivings on the subject, and suspected that he might have no title to the credit (or I should rather say to the discredit) of the imputed paternity ; but all his scruples Avere satisfied when he found that the child had six fingers on each hand, for he had himself possessed two small super- numerary fingers, which had been amputated when he was an infant. Haller gives an account of a web-footed family, descended from a mother in whom that configu- ration existed. There is now living in London a musical composer of some celebrity, in whose person nature has played a similar freak ; and whose father, grandfather, and great-grandfather, were all web-footed before him. Beyond this point his infor- mation does not reach. I am indebted for the knowledge of this instance to one of my former pupils, Mr. Cooper, of Grafton street. Now there is one very curious circumstance observable in regard to these family- likenesses, namely, that they may fail to appear in the child, and yet appear in the grandchild ; may skip over a generation or two ; may, after lying dormant, break out, as it were, in some collateral branch of the family tree. This not only proves that certain physical peculiarities may be transmitted, but it discloses this remarkable property, that peculiarities no/ /Jossfsser/ by the parent may nevertheiesi ue transmitted by him. And this evidently opens a wide field for the operatioi oi^ hereditary tendencies. A person is not to consider himself as neces- SYMPTOMS. ■''9 sarily free from a disposition to consumptioa or gout, because his parents have ne-er shown any symptoms of those disorders. When one parent only bears the transmissible tendency, the disease appears to be most apt to break out in the children who most resemble that parent in their physical conformation and appearance. Yet this is a most universal rule. I am acquainted with a gentleman who had lost several brothers or sisters by phthisis. The fatal disposition is known to exist on his mother's side, while his father's pedigree is be- lieved to be quite free from it. All the children that have hitherto become consump- tive have resembled the mother in bodily configuration and features, except this gentleman, who is like his father's family, but who, nevertheless, labours under un- equivocal consumption.* It becomes a very interesting, and a very important question, whether acquired peculiarities can be transmitted. I have been told, by a gentleman attending the class, that he knew a man who, having been accidentally deprived of sight, after- wards propagated bUnd children. I believe, however, such an event to be uncom- mon. Dr. Prichard is of opinion that all original or connate bodily peculiarities lend to become hereditary, while changes in the organic structure of the individual from external causes during hfe, end with him, and have no obvious influence on his progeny. Although this general law is probably true, I doubt whether it be yet sufficiently established by a reference to actual facts. I need scarcely say a word respecting the importance to medical men, and indeed to all men, of a knowledge of these hereditary dispositions. Such knowledge ourrht to regulate, in some degree, the choice of persons wishing to marry. Where both parents have a decided tendency to any complaint, there will be a double probability of a diseased offspring. Lawful intermarriages between members of the same family are often highly objectionable on the same score. Any inherent defect or . morbid propensity is aggravated by what cattle-dealers call " breeding in and in." Again, if it be known that in any family an hereditary proclivity exists — to gout and gravel, for instance, or to consumption — this knowledge ought to warn every individual of that family sedulously to avoid the causes which foster and develop these diseases ; and medical men, possessed of the requisite information, may give most valuable advice and instruction on these points. LECTURE VIII. Symptoms. Their Uses in relation to the Diagnosis, the Prognosis and the Treatment of Diseases. Signs, as distinguished from Symptoms. Pathog- nomomic, Commemorative, Direct and Indirect Symptoms. Examples of Symp- toms as they consist of uneasy Sensations, disordered Functions, or changes of Sensible Qualities. We are perpetually reading and talking about symptoms ; and no wonder, for symptoms are the signals by which we learn that disease is present ; the evidence upon which our whole art proceeds. We are always, therefore, observing symp- toms, analyzing them, striving to interpret their meaning, to ascertain what they signify. Without a knowledge of symptoms we can have no knowledge of the art of physic. Sagacity in penetrating the import of symptoms constitutes a great pan of the skill of an able physician. We shall find it useful to take a cursory view of semeiology, and to famihurize our thoughts with some of the cardinal symptoms themselves, before we speak of them in connection with particulai diseases. What do we mean by a symptom ? XvixTttuifia — " Something that happens concur rently with something else." Symptoms, they say, are coincidences, but this i& merely translating the word svuHtufw/ta into English through the Latin. Symptoms • This gentleman, an eminent London physician, has died since this lecture was given so SYMPTOMS. are sometimes defined to be morbid phenomena — " any thing (5bserved in a patient out of the course of health." But in forming our estimate of disease we must often lake into account functions that are regular and undisturbed : tliese have been said to furnish negative symptoms. For my own part, if I were called upon to dclino a symptom, I should say, " Every thing or circumstance happening in the body of a S'ck person, and capable of being perceived by himself or by others, which can be made to assist our judgment concerning the seat or the nature of his disease, its pro- bable course and termination, or its proper treatment: every such thing or circum- stance is a symptom^ And 1 wish you to take notice at once, that it is for the three purposes just adverted to, that we cultivate the study of symptoms, viz.: — First, To ascertain the seat and the nature of the disease under which our patient is labouring : in technical language to form the diagnosis. 1 am no great friend to technical phrases where they can be avoided without inconvenience ; but in some cases short terms of art save us a great deal of tiresome periphrasis and circum locution. A second object of the study of symptoms is to enable us to foresee and foretell the probable course and issue of the disease ; in other words, to frame the prognosis. And a thii'd, and paramount use of a knowledge of symptoms, is to direct oui treatment of the disease. I suspect that the immense importance of the first mentioned of these three objects — the diagnosis or recognition of disease, is not always clearly seen, either by students or practitioners of medicine. Sometimes we are obliged to prescribe for a malady, although we are in great uncertainty, perhaps in total ignorance, respecting its nature or its situation. But this is always unsatisfactory. On the other hand, when we have ascertained where and what the disease is, we apply with much more confidence, precision and comfort, those rules for its relief which w^e have picked up by our own observation, or have been taught by others. This, however, is a very limited view of the importance of an exact and true diagnosis. Diagnosis forms the indispensable basis of all advances in physic as a practical art. There is a common saying, that the knowledge of what a disease is, is half its cure. In one sense this may sometimes be true, but in another sense it is not so. Almost all that we know concerning the proper treatment of the sick is originally derived from observation, not of the nature of diseases, but of the ejects of remedies. That rhubarb will purge, and opium lull to sleep, and loss of blood occasion faintness, are truths which experience alone could suggest, aid successive trials alone confirm. They are purely empirical truths. No one could guess them beforehand. No skill in the discrimination of disease has even a tendency to teach them. In some few cases, indeed, we see that certain mechanical derangements exist, which are mani- festly capable of mechanical relief. When parts of the body are displaced, as in hernia and dislocations ; or when distension and pressure are evidently produced by accumulated fluids ; the mechanical remedies are at once suggested by the physical and obvious faults. But with such exceptions, diagnosis does not, of itself, afford us any direct information as to the cure of diseases; but it does this — it defines and fixes the objects about which observation is to be exercised, and experience collected. When Ave can once identify a given diseased condition, we obtain the privilege of watching the behaviour of that diseased condition, again and again, under the opera- tion of therapeutic measures ; and from that time the increase of our knowledge concerning the appropriate management of that particular disease becomes progressive and sure. The term experience is obviously misapplied, and the results of all observation are vitiated, when any doubt exists about the sameness of the objects contemplated. It is mainly to this imperfection in the diagnostic part of medicine that we must attribute the uncertainty and variation, both of doctrine and practice, which have brought so much suspicion, and reproach, and ridicule upon the science we profess. False experience, if I may use such a term, has greatly hindered the progress of the heaUng art ; and false experience springs from false diagnosis. A man will tell you that he has cured a score of cases of advanced phthisis ; but he has deceived himself : they were not cases of true phthisis, but simply cases of SYMPTOMS. SI chronic inflammation, with puriform discharge of the mucous membrane of the bronchi. He publishes an account of his success, and of his plan of treatment ; and thus he deceives others also : and thus he retards the science which he fondly and conscientiously beheves he is promoting. Accuracy of diagnosis, then, cannot be too highly estimated, nor too diligently sought after. It has been wonderfully im- proved within the last twenty years. 'Ihe prognonis, or foreknowledge of the course and event of diseases, has but httle connection with the promotion of the art of healing ; but it is not on that account less worthy of our attention. Both physician and patient find their advan- tage in the capability of the former to determine whether a disease be remediable — to foresee the changes that may be expected in its progress — to predict the manner in which it will terminate. Knowledge of this kind opens to us a fair and honour- able source of credit and reputation ; and it begets a degree of confidence towards us, which is beneficial, not merely to ourselves, but to our clients. Our influence over a sick person, and the efficacy of many of our remedial measures, are remark- ably mcreased by the reliance he places on our skill, and by our apparent acquaint- ance with the nature of his complaint. It is often of material consequence, in another point of view, that the fatal character of a disease should be plainly perceived. A sick man, made aware of his danger, is furnished with a motive and an opportunity for arramjmg his worldly affairs, in the settlement of which the future comfort and happiness of his family may be very deeply concerned ; for making his will ; and also for more solemn preparation for the awful change that awaits him. For these reasons medical men have, in all periods, endeavoured to read, in the phenomena presented to them by diseases, the event to which those diseases severally tend. To form an accurate opinion on this head is, however, one thing — to divulge it, ano- ther. There is always some risk of losing, instead of gaining credit, by strong state- ments, and confident predictions of the death or the recovery of a patient. If you give an unfavourable prognosis, you have a good chance of losing your patient alto- gether; his friends argue very naturally, that you are not inAUUble, that you may be wrong, that i^ you know of no means of safety for him, some other practitioner may, and they will grasp at v/hatever straw comes near them. Do not suppose that this is merely a selfish view of the matter : it is often of much moment to the patient himself, that he should not be tempted to put his life under the charge of impostors, who will feed his hopes, and promise largely, and torture him perhaps with their discipline, and have no mercy upon his pocket. Many an instance have I known of persons dying of consumption, who, when given over by their regular attendants, have been brought to London at considerable expense, exchanging the many com- forts of home for the inconveniences of a hired lodging, that they might be cured by that ignorant and cruel and rapacious quack, iVlr. St. John Long. There are other reasons, too, why we must sometimes conceal the truth from our patients. It often happens that a person is extremely ill, and in great danger, but may yet reco- ver if he is not informed of his peril. To agitate a person in these circumstances by telling him he is likely to die, is to lessen, perhaps to destroy, his chance of recovery. You kill him if you take away his hope of hving. It must be confessed that the duty of the medical man in these cases is very painful and embarrassing: the patient and the patient's friends are urgently inquisitive to know whether there is any danger ; or whether he is not yet out of danger. The rule which I have always adopted in circumstances of this kind, when I see clearly that the case is hopeless of cure, is to fix as well as I can upon that person among the family c" friends of the patient to whose prudence the real state of the matter may be the most safely confided. If I think that there is a possible chance of recovery, and that a knowledge of his danger by the patient would diminish that chance, of course. I urge the necessity of speaking to him with assumed cheerfulness and confidence ■ if I see that the case is absolutely and inevitably mortal, either soon or at some littL distance of time, I leave it to the discretion of the person with whom I communicate to disclose or conceal my opinion as he or she may think best. There are, I bekevc. practitioners, who make it a point, on principles of worldly policy, never to speak 82 SYMPTOMS. des])airingly of a patient ; but 1 cannot regard such a rule of conduct as honest, or justifiable, or consistent with one's Christian duty. Now I would have you observe that symptoms do not serve equally or indiffer- ently the three several purposes that I have spoken of. The same symptom or set of symptoms may indeed at once reveal the nature of the disease, arid foreshow it3 result, and indicate its treatment. When we have discovered what the disease is, we may want no further information to tell us how it will terminate, or how we are to prescribe for it. A man previously sound and well, shivers, then becomes hot, and afterwards sweats, and then reverts to his natural state of comfort and good heahh : and the same series of phenomena recur every other day. We pronounce the disease to be ague ; we predict that, in this climate at least, the patient will recover ; and we give him quinia ; all upon the strength of the same set of symp- toms. But this is not necessarily the case : certain symptoms may disclose to us what the malady is, and where it is situated ; other symptoms teach us whether our patient is hkely 'o survive or not ; and a still different set instruct us what is the proper method of cure to be attempted. We see a number of httle pustules scattered over his skin, and we know that our patient is labouring under small-pox. His chance of recovery will be singularly different, according as the spots upon his face run together, or remain separate and distinct from each other ; and we investigate the state of his pulse, and his breathing, of his bowels and his brain, before we can ven- ture to prescribe for him. Those s3'mptoms, or combinations of symptoms, which disclose the place and nature of the disease, we call signs of disease ; those which teach us what to do, we call indications of treatment. We speak also of prognos- tic signs. By keeping these distinct ends of the study of symptoms in mind, Ave shall be enabled to group them to advantage, and to avoid huddling confusedly together symptoms that speak, not indeed a different language, but upon a different topic. The ancients, who knew but little of the intimate nature of diseases, but who paid great attention to symptoms, have laid down most admirable rules in respect to prognosis : which shows not only that the prognostic signs are more easily made out, in many cases, than the diagnostic, but also that they may be inde- pendent of them. I have just spoken of symptoms as being, signs. These words are not, however exactly synonymous, ahhough they are frequently employed as if they were so. Even those medical writers who admit a distinction between them, have not alwaj's succeeded in clearly pointing out the difference. Signs are deduced from symptoms, by arranging and comparing them, and noticing the circumstances under which they occur. Symptoms are obvious to all persons alike — to the nurse as well as to the physician : signs, for the most part, are such to medical eyes alone. Let me try to make this plainer by the help of an illustration. Symptoms may be considered as resembling so many words. When taken separately, or when put together at ran- dom, the words have no force or siiinification. Arrange them in due order, reduce them mto a sentence, and they convey a meaning. The sentence is a sign or expression of something which is thus revealed. Symptoms become signs when their import can be interpreted. A certain crackling sound, of which T shall have much to say hereafter, is heard (we will suppose) in some part of a patient's lung, by the ear applied outside his thorax. The sound is a symptom ; any one who listens may perceive it. It is even so far a sign that it denotes the unnatural presence of a liquid in the lung, and the passage of air through that liquid. But the liquid may be one of several — mucus, or serum, or pus, or blood : we cannot tell by the sound alone which of these it is. But if we learn that the person in whose lung the sound is audible has been ill for a day or two only, that he has pain in his chest, cough, embarrassed breathing, and fever, we conclude that he is labouring under that serious disease, inflammation of the lung. The crackhng sound alone could not assure us of this ; nor without the addition of this sound could the pain, the laboured breathing, the cough, or the fever. Taken collectively, the symptoms constitute a diagnostic sign, luid bespeak the existence of pneumonia. Sometimes a symptom, or set of symptoms, becomes a sign, by its relation to whaJ SYMPTOMS. 83 has gone before and what follows it. To adhere to our illustration, the meaning becomes evident from the context. By comparing, at short intervals, in the sup- posed case of pneumonia, the extent and character of the sounds heard during respi- ration, we ascertain whether the disease be advancing or receding; and thus con vert the sounds, or their variations from day to day, injo a prognostic sign. We always strive, then, to penetrate beyond the symptoms to the disease of which they are significant. But we do not always succeed in this, and when we do not (as in the case of ague), we are driven to the necessity of regarding the combina- tion of symptoms as the disease. You will often hear of pathognomonic symptoms. A pathognomonic symptom is one which, when it occurs, settles infallibly the nature of the malady ; becomes a positive sign or token of a particular morbid condition. But there are very few symptoms, if there be any, which, taken singly, can ever be said to be strictly pa- thognomonic signs ; yet a symptom which in itself possesses httle or no value may become very significant when conjoined with others. Much light is often thrown upon symptoms by what the French call commemo- rative circumstances — that is, by a knowledge of the previous history and condition of the patient. For example, a person may have palpitation and other marks of dis- ordered action of the heart, and doubts may exist whether these symptoms depend or not upon organic disease of that organ. The question is often determined in the affirmative, by our learning that the patient has had one or more attacks of acute rheumatism of the joints. There are some other general division of symptoms, which it is useful to attend to. Thus some symptoms are said to be direct, and others to be indirect symptoms. Direct symptoms relate to the very part which is affected ; indirect symptoms are such as " declare themselves through the medium of some other parts, or through the medium of the constitution at large." There are some cases in which the direct symptoms are of much more value than the indirect ; and there are other cases in which those which are indirect are the most important; and there are yet many more which require for their elucidation a knowledge of both the direct and the indirect symptoms. Again, there are many symptoms of which we receive no information, except through the statements made by the patient himself; and there are many others of Avhich we learn the existence by means of our own observation, by the exercise of our several senses. The relative importance of these varies too in different cases. Of course those symptoms which we are able to ascertain for ourselves ar^ the most trustioorthy ; but both sorts of symptoms shed mutual light upon each other. We should constantly be making mistakes if we relied solely upon what our patients tell us. On the other hand, the value of the information we derive from their state- ments is made apparent by the difficulty we are apt to experience in investigating the diseases of children ; of those who are dumb ; or, what is much the same thing, who speak no language that we understand. Now, setting aside that notice of the healthy functions which is sometimes neces- sary in order to determine the relative value and meaning of other symptoms, and regarding those symptoms only which consist of morbid changes, they may all be classed under three heads: 1. Uneasy, unnatural, or impaired sensations: 2. Dis- ordered or impeded functions : and 3. Alterations of structure or of appearance ; changes of sensible qualities. When these last come within the direct cognizance 01 our senses, they are called, usually, physical signs. Uneasy or altered sensations we can only be aware of through the testimony of the patients themselves. The symptoms belonging to the other classes fall, gene- rally, under our own notice. Uneasy or altered sensations comprehend a large class of morbid symptoms. By their occurrence persons sometimes become conscious that they are unwell before any other symptoms are observable. Of all the uneasy sensations pain is the most common and the most important. It rarely happens that it is not felt, at one period or another, in inflammatory disorders ; and it very often occurs, and is very acuK; too, when there is no inflammation at all. I shall have occasion, in a subsequent 84 SYMPTOMS. lecture, to lay before you the criteria between pains that accompany inflammalicn. and pains that are independent of it. Upon that point of distinction the whoio ques- tion of treatment commonly depends ; and it is often a most difficult point to de- termine. There are many different kinds and degrees of pain. Different kinds of morbid action are accompanied by different kinds of pain ; and the same kind of morbid action — inflammation, for example — produces different modifications of pain, accord- ing as it affects different parts. The pain that belongs to inflammation of the lungs differs from that which is felt in inflammation of the bowels. Bones, muscles, ten- dons, ligaments — the bladder, the kidney, the uterus — all modify, in a manner pecu- liar to themselves, the pain that is produced in them by injury or disease. Differ- ent epithets are given to the different varieties of pain — i. e., persons endeavour to explain how they feel by likening their sensations to something which they have felt before, or fancy they have felt. Thus we hear of s/iurp pain — shooting pain- — • dull pain — gnawing pain — burning pain — tearing pain ; and so on. If pain be felt in a part only when it is touched, i. e., when pressure is made upon it, the heightened sensibility is called tenderness : — the part is said to be ten- der. This is a very important kind of pain, as we shall see hereafter. A part may be both painful and tender: or painful without being tender: or tender without being otherwise painful. Pain often takes place, not in the part really affected by disease, but in some dis- tant part. Inflammation of the liver or diaphragm will cause pain of the right shoulder : the mechanical irritation of a stone in the bladder produces pain at the extremity of the urethra : inflammation of the hip-joint occasions pain in the knee : disease of the heart is often attended with pain running down the left arm : many headaches result from irritation of the stomach. We call these instances of inai/ic:; or sympathetic pain. Some of them admit of no very obvious explanation : — others have been ascribed to connections between the sentient nerves of the two parts; "especially when the part really injured is internal, and that to which the feeling is referred is external, and both derive their sentient nerves from the same larger branches." You will perceive that a due estimation of these sympathetic pains is of no small importance. I may observe of pain in general, that it is differently felt — or at any rate differ- ently complained of — by persons of different constitutions and temperaments. There are even, I fancy, national differences in this respect. I have been present, as you may believe, at a great number of surgical operations, and I have been struck with the different degrees of patience with which the same operation has been borne by Irishmen and by Scotchmen. The Irishman, generally speaking, either feels more acutely, or gives more free vent to his feelings in cries and exclamations : the Scotch- man, on the contrary, most commonly preserves a resolute silence. In complaints that are attended with low spirits, and hypochondriacal symptoms, there is reason to believe that the pain spoken of often depends, in a great degree, upon the eager attention that is paid to it. The accounts given by such patients of their suflerings are always to be received with a grain of allowance ; and this is often an embar- rassing circumstance in practice. Patients take it ill if they do not seem to be im- phcitly credited ; and yet if they are not convinced that much of what they suffer depends on their great attention to it, they will never get well. You will often find that they cease to feel pain — i. c, they forget to attend to their complaints — when their attention is otherwise strongly arrested ; as by conversation, or music. I ad- verted to this principle in my last lecture. Besides pain, in all its modifications, there are man 3^ other, and very interesting, uneasy sensations. Itching is an uneasy sensation nearly allied to pain. As severe mechanical irritation will cause pain, so a slighter degree of it will cause itching. Itching occurs in many cutaneous diseases, and it gives a name to one of them, whicn is emphatically called the itch.- And the Latin word signifying the same sensation, prurigo, is made use of to denote other forms of disease of which itching is the most prominent symptom. It often affects some one of the natural outlets of the body. It occurs about the rectum, from the motions of little Avorms that nestle UNEASY SENSATIONS. 85 in the lower part of that gut. This prurigo podicis, which does not always depend on the cause just mentioned — and the prurigo pudendi in the female — are some- times most distressing complaints ; harassing the patients continually, preventing sleep, excluding them from society, and requiring medical treatment. Acrid matters in the intestines will sometimes produce a kind of itching there ; and the call to void the fajces is perhaps more akin to itching than to any other sensa- tion : sometimes, indeed, it amounts to ])ain. The tickling often felt in the wind- pipe, and provoking the person to cough, appears to be of the same nature. Tingling and pricking are sensations which have also some analogy with itching. Nausea is another uneasy sensation. It is sometimes a dir'ect symptom of disease or disorder of the stomach, to which the sensation is referred. Sometimes it is a very important indirect symptom, taken in conjunction with others, of disease in some part at a distance from the stomach — in the kidney, for example, or in the brain. The nausea which is so troublesome to pregnant women is another in- stance of a morbid sensation sympathetic of irritation in a distant organ. Another example o." an uneasy sensation we have in giddiness, or dizziness — technically, vertigo. It sometimes results from disease within tlie head; some- times it is an indirect consequence of disorder of the stomach ; or of mere de- bility and an approach to syncope. Patients will also complain of an undefinable sensation which they usually call sinking — a sensation which is referred to the epigastric region. This is frequently a source of much distress to hysterical women ; and it is occasionally the forerunner of death at the close of severe diseases which have a tendency to end fatf Ily in the way of syncope. Many other symptoms might be mentioned which belong to this class of uneasy sensations, and for our knowledge of the existence of which we must depend upon the accounts given us by the patients themselves. Sensations of weight; and of tightness and fullness ; drowsiness, tenesmus, strangury, heartburn ; and various depraved conditions of the special senses. In the majority of diseases the appetite is lost or impaired ; but sometimes excessive hunger accompanies and denotes disease. We sometimes derive the first suspicion of the existence of diabetes from the preternatural keenness of the appetite. Thirst is a very constant and striking symptom in all febrile and inflammatory disorders ; and in the disease just now mentioned, diabetes, it frequently constitutes the whole distress of which the patient is sensible. The appetite may be perverted, as well as deficient or excessive. Chlorotic girls will eat cinders, sealing-wax, slate-pencil, and such trash. So women who are pregnant either have or pretend to have inordinate longings for particular kinds of food — longings which are evidently fostered by encouragement. They are not, I believe, common at present in this country ; and they are less frequently heard of among the poor, who have not the means of gratifying them, than in the higher classes of society. The class of uneasy sensations you see then is a very large one, and some of the morbid feelings are of very great moment. However, there are not many diseases which consist altogether of uneasy sensations ; and when we find that pain or uneasiness is complained of in any part or organ, we next proceed to inquire whether the functions of that part or organ are disturbed or suspended. If we discover any interruption or derangement of function, we have additional reason for concludino- that the part so affected in its sensations and in its functions is actually the seat of disease. This is an inquiry which we can prosecute with much less assistance from the patient himself; and mostly with no assistance at all ; and even in spite of any erroneous opinions which he may have formed, and is anxious to state upon the subject. The study of disordered functions is of great practical value. The functions of the brain and nerves — of the heart and blood-vessels — of the respiratory apparatus — and of the digestive organs — are all of vital consequence. Some of the impeded or disordered functions which relate to the brain and nerves are in fact identical with the last class of symptoms, and consist of altered or morbid sensations : sensation being one of the natural functions of those parts. Deprava tions, for instance, of the sense of touch ; numbness ; the total absence of senfation* u 86 SYMPTOMS. which we call anaesthesia. Symptoms of this kind do not constitute primary dl«r;ases but they often portend or accompany very serious alterations in the brain, or in some part of the nervous system : and it is from that circumstance that they derive the great interest and importance which belong to them. The same may be said of perverted conditions of the other senses. The sense of vision is often impaired, and in various ways and degrees, from mere dimness or imperfection of sight, to total blindness. And this total blindness may occur without any other apparent disease, the humours and fabric of the eye itself being in all evident respects healthy and right ; it may come on, too, so gradually, and increase so slowly, as not to be disco- vered for a long time, even by the patient himself. Mr. Day, the great blacking man, of the firm of Day and Martin, who died not long since, was almost entirely bhnd. He told me he first discovered that the sight of one eye was gone, one day when he attempted to look at a distant object through a telescope. He could see nothing, and he imagined that the little brass plate which slides over the eye-glass had not been withdrawn. There was, however, no such obstacle ; and he too soon found that when the other ej^e alone was closed, he was in total darkness. This state of blind- ness is called amaurosis, and it may depend upon pressure made upon the retina, or upon the optic nerves, or upon the brain at the origin of those nerves. There are other causes also, to be mentioned hereafter, of amaurosis. Its approach is some- times marked by the fallacious appearance of black spots upon the objects the patient is looking at, or floating before him in the air — muscx volitantes. Some of the other depravations of sight are still more extraordinary, and except that they are not uncommon, might almost be considered fabulous. Thus persons sometimes see things around them apparently in motion, when in truth they are not so. This is, in fact, a symptom I have mentioned before — vertigo. If the patient shuts his eyes, and consequently can see nothing, he feels as if he were himself turning round, while in reality he is at rest. Persons in this state fancy sometimes that the bed on which they lie is sinking rapidly down with them into some abyss. A still stranger depra- vation of the sense of vision is that in which a person sees only one half of an object at which he is steadfastly looking. One man, in passing along the street, imagined that every body he met had only one eye. The late Dr. Wollaston was subject to this optical delusion : he frequently found that only one half of the object he looked at was visible : and he wrote an ingenious paper in the Philosophical Transactions to explain this. After his death a tumour was found in his brain, interfering with the optic nerves. The celebrated Mr. Abernethy had once a tem- porary afjection of the same kind, dependent no doubt upon some shght and transient injury of the brain. He was thrown, I believe, from his horse — at any rate he received a violent blow on his head, which stunned him ; and when he had recovered a little, he was taken home in a hackney-coach. On his way he amused himself with reading the names of the tradespeople placed in front of the shops, and he wag greatly surprised to find that one half of each name — the last half — seemed blotted out. He describes this in his lectures, in his whimsical wa)% by taking his own name as an example : " I could see as far as the ne (said he), but I could not see a bit of the thy:'' Those very Avonderful cases of spectral illusion which sometimes occur, come within the class of symptoms we are now considering ; they throw a strong light upon many of the well-authenticated ghost-stories — which were in fact merely instances of disease or derangement in the brains of the ghost-seers. It would be out of place to go into any detail upon this interesting subject here. You will find some excellent examples of these spectral illusions in Dr. Hibbert's book on .Ippari- tions, in Sir David Brewster's Natural Magic, and in Sir Waller Scott's Letters on Jlemonolugy. The sense of hearing is liable to analogous disorders. Sometimes it becomes pre- ternaturally acute ; and this is a bad symj)tom when it does occur. I was called, a }^ear or two ago, to see a gentleman in the Temple ; he had been taken ill only a. lew hours before, but I found him dying; the pulse was gone from his wrist, and his skin was cold, but his intellect was entire, and he complained of nothing but the distress he felt from the loud noises that were made by those around him, in mo^mgr DISORDERED FUNCTIONS. S7 about and in speaking, although, in fact, all noise was as much as possible suppressed, and conversation was carried on in whispers : but his hearing was painfully acute. He died the same evening; I believe of an irregular form of cholera. It is always right that patients should be protected from the irritation which might arise from this source ; for that degree of noise which would not interfere with the sleep of a healthy person will often not only prevent it in a sick man, but bring on delirium, and aggra- vate greatly the disease under which he labours. The custom of strewing the streets with straw before the houses of those who are seriously ill, is, in many cases, a very proper precautionary measure. The opposite fault, obtuseness of hearing, is much more common. Deafness is frequently attributable to some physical imperfection in the organ of hearing. But it is with cases in which it has a deeper origin, that the physician is chiefly con- cerned. It often occurs in fever, and is not then thought a bad symptom : it cer- tainly is a much less unfavourable circumstance than morbid acuteness of hearing ; and it probably depends upon a disordered state of the brain, which is not in itself very dangerous. What is called tinnitus aurium, is an instance of the depravation of the sense of hearing. It seems sometimes to result from the too strong throbbing of the arteries. It occurs in many disorders, and is not unfrequently a symptom of diseased cerebral vessels, and a precursor of apoplexy or palsy. It is sometimes in itself extremely annoying. Curious and undefinable sounds are heard by some patients — sounds like a rushing wind, like the falling of a cataract, the ringing of a bell, or the beat of a drum. A female patient of mine, in the Middlesex Hospital, last year, who had disease of the bones of the ear, with symptoms that threatened some implication of the brain, affirmed that she heard a perpetual noise in her ear like the singing of a tea-kettle. I have lately been consulted by a gentleman from the country, who had no other complaint than a constant hissing, which worried him greatly, in one ear. Another had watched with curious anxiety, and described to me very graphically, the successive variations which this troublesome symptom underwent in his own person. It began suddenly, with some headache, and had lasted six vveeks. At first it w-as a loud roaring, like that of the sea ; in a few days it came to resemble exactly the w^histling of the wind among the trees in Avinter ; afterwards he could have beUeved that the room was filled with humming gnats ; and finally the noise settled down into the gentle sound of a distant waterfall. It haunted him incessantly. Sir David Brewster relates the case of a lady, subject to spectral illusions, whose ear was mocked by unreal sounds, as her eye by unreal visions. Being in her right mind, and perfectly aware of the infidelity of her senses, she repeatedly heard, not vague noises merely, but voices and sentences, when none were uttered. Affections of the intellect — of what are sometimes called the internal senses, are very common and very important symptoms of disease. Incoherence of the trains of thought — palpably false belief — extravagant perv^ersions of the judgment. These affections are sometimes considered as primary diseases themselves ; they very fre- quently accompany certain febrile diseases ; and they are not uncommon in diseases that are unattended with fever. There is more or less derangement of the internal senses from the very beginning of continued fever. The power of attention is im- paired. That kind and degree of mental exertion which would afford gratification and amusement when we are well, become laborious and irksome when we are ill ; and to compel, or to urge the attention, under such circumstances, is injurious. This state is probably only the first degree of delirium, and therefore these slight approaches to derangement of the internal senses are by no means to be disregarded It is curious that the delirium of fever is always most marked during the night ; this seems to be owing to the circumstance that the erroneous notions and wandering thoughts of the patient are not corrected by impressions made upon his externa! senses. You will find, conformably with the same principle, that your patient sometimes ceases to be delirious upon your visiting him : the sight of a new face rouses him for a time, but he soon relapses. Voluntary motion is another function connected with the nervous system, and ono which affords a great variety of important symptoms. I Jke the power of the sense*, 88 SYMPTOMS. It may be excessive, or deficient, or perverted. Excess of voluntary motion is not common, nor very important. Maniacal patients sometimes exhibit an extraordinary degree of muscular strength ; indeed, in the delirium of fever something of the same kind may be observed. But the opposite state, that in which the power of voluntary motion is deficient, muscular debility is exceedingly common. Debility is an original and essential part of fevers. It appears before there has been time for it to be produced by the exhaustion of disease. It is not always proportional to the other symptoms, and does not necessarily imply any great degree of danger. This sudden and early weakness has been a very striking symptom in our two recent visitations of influ- enza. Persons previously in apparent good health would be seized as they walked along the street, and be glad to sit down in a shop, or a carriage, and to get home and go to bed. Young and strong persons would be thus rapidly prostrated. In some instances debility does not appear till late in the disease, of which it then forms an important prognostic symptom, and an important guide for our treatment. It shows us that there is a tendency to death by asthenia, and we have to endeavour to keep the patient alive by supporting his strength as well as we can, this being the chief or the only indication. Debility is occasionally the principal symptom of the whole disease — as in hemi- plegia, paraplegia, or in more partial palsy, palsy of one limb, even of a finger, or of a single muscle, as of the levator palpebrarum. This, though it may seem trivial in itself, is far from being so in reality ; it often forms a fragment only of a most serious disease. From such partial manifestations of palsy we presage a more general and alarming attack ; as the loosening of a few stones in the wall announces the com- mencing earthquake. A shght degree of paralysis, affecting some of the muscles of the eye, will j)roduce a squint, and consequent double vision ; and this occurs not only in hydrocephalus, when it is a most significant phenomenon, but also as a pre- lude to more extensive palsy. General palsy is sometimes prefaced by a similar affection of the tongue, producing a faltering and indistinctness of speech. Spasm is an instance of disturbance and perversion of the power of voluntary motion. It consists in an irregular and violent contraction of muscular parts — involuntary, even when the voluntary muscles are concerned. Cramp is a famihar example of it ; and we have been taught, since the cholera came among us, to regard cramp as sometimes a very formidable symptom : not formidable in itself, but formidable in respect to the condition that gives rise to it. Tonic spasm is the prin- cipal symptom, also, of that frightful disease — frightful in its phenomena and in its frequent fatality — tetanus. The convulsions of epilepsy and hysteria, and the jactitation of chorea, are ordinary examples of the perversion of the function of voluntary motion. Sometimes convulsions bode great danger, sometimes none at all. So, also, tremor, which is near akin to spasm, is a sign, frequently, of a morbid state of the greatest peril; while it is sometimes violent without being attended with the smallest hazard. If we now turn to the greatest function of respiration, we shall find that it affords a very large number of morbid symptoms, and those of the highest importance. Dijspncea, difficulty of respiration, is one of the most prominent of those symp- toms. It may depend upon various causes. In inflammation of the lungs or pleurae, '.here are several circumstances in operation to impede the breathing; for example, pain, which would be enough of itself ; the effusion of lymph into the texture of the lUng, or of serum into the cavitj' of the pleurcp, mechanically resisting the entrance of air. In dyspnoea the breathing is almost always most difficult when the patient is lying flat on his back. One reason for this is plain. In the supine horizontal posture the action of the diaphragm is obstructed by the weight and pressure of the viscera; and the erect position obviates this. Upright breathing, or//iO/)nfl"o, has rome to be considered as a distinct modification of dyspnoea. The patient cannot lie down. Sometimes, as in asthma, the difficulty of breathing comes on in separate parox- ysms ; the respiration becomes all at once noisy, wheezing, and laborious. A person who had never seen any cases of this kind would imagine that the patient DISORDERED FUNCTIONS. 89 was at the point of death — that it was all over with him ; but the most frightfuJ ot these attacks are seldom attended with any immediate danger. They depend frequently upon organic disease of the lungs, heart, or aorta ; sometimes they seem to be purely spasmodic; sometimes to result from transient congestion of blood in the lungs. Cough is a violent spasmodic action. A full inspiration is taken ; then the glottis is closed pretty firmly; and in expiration the air is forced suddenly out, and with it, frequently, mucous or other matters which had irritated the air-passages. It seems to be one of the efforts of nature to expel from the lungs things which ought not to be there. There are several varieties of cough. It is a symptom belonging to so many dangerous complaints — pneumonia, puhnonary consumption, and diseases of the heart — that it always demands strict attention. No one who has once heard it can ever mistake the hooping cough. There is also a startling obstreperous sort of cough, shattering one's ears almost, like the noise of a person coughing through a brass trumpet — which depends upon some peculiar state of the nervous system, imphes no danger, and is more distressing to the bystanders than to the person who utters it. I beheve you may often distinguish the cough of inflammation of the lungs from that of phthisis, and each from the cough of hysteria, by their respective sounds : but we have much better methods of distinguishing them — viz., by the concurrence or the absence of certain other sounds belonging to the breathing, and ascertained by auscultation. Sneezing is another morbid symptom, which, though it may appear trifling, is not to be overlooked. It is a very common symptom in catarrhal affections. When sneezing occurs in combination with cough, it affords a presumption that the cough is not phthisical. Sneezing may even happen as a primary disorder, occur- ring in long-continued paroxysms. 1 have at present under my care a young lady of an hysterical disposition, whose main distress consists in violent and pro- tracted attacks of sternutation, which have harassed her almost daily for many months. One of our bishops is subject to very inconvenient fits of this kind. He will begin to sneeze and go on sneezing incessantly for a long time together. I believe that he finds an effectual remedy for these attacks in plunging his head into cold water. I say nothing here of those direct symptoms of pulmonary disease which are ascertained by the sense of hearing — by auscultation and percussion. I shall enter fully into that subject hereafter. A systematic account of symptoms, if this were the fitting place for it, which it is not, would require a dozen or twenty lec- tures. In order to perceive the relation of symptoms, taken one by one or in diverse combinations, to the various known forms of disease, you must have some prior knowledge of diseases. But I am oWiged to suppose (however incorrect the supposition may be in respect to some among you), that you are mere beginners, and have still to learn even the rudiments of such knowledge. Different dis- eases may have many symptoms in common. The same symptom may bear a very different import according as it is combined with other symptoms ; or con- nected with this or that disorder. The proper place for a comprehensive and complete review of symptoms would, therefore, be at the etui of a course of lec- tures on the practice of physic. When the various forms of disease had been gone through, in reference to the symptoms belonging to them, then would be the time to take the converse aspect of the case, and to consider ihe long list of symp- toms in reference to the diseases they denote or accompany. All that I am at present attempting, is to give you some general notion of what symptoms are ; to put before you, as samples, a few of the most prominent ; and to show you, even by this cursory and imperfect view of them, of how great importance it is that we should make their relations to each other and to different diseases, and their sig nificaiion, diagnostic, prognostic, and therapeutic, the objects of our most diligent attention. I might find matter for two or three lectures, if my present purpose would admit of them, in the symptoms that are drawn from the functions belonging to*the a>- culation. Everybody knows how much importance is attributed to the sta.e of tne h2 90 SYMPTOMS. arterial pulse. It is expected of us, as a matter of course, that before we th nk of prescribing for a patient we should at any rate feel his pulse. And really the in- fonnalion obtained by that little touch of the wrist is often of the most interesting and instructive kind. But it requires practice and intelligence to appreciate that infor- mation. The qualities that we most attend to in the pulse are its frequency, its regularity, iis fulness, and its force. It is necessary that we should know the number of beats which the heart habitually makes in heakh ; for it varies much in different persons. Its average number of pulsations in a healthy adult is from 70 to 75 ; but there are persons who, when they are quite well, have always a pulse of 80 or 90 ; and there are others in whom the ])ulse seldom rises above 60. In early life the pulse is more frequent, in old age it is more slow, than the standard I have given. Cheteris paribus, its beats are more numerous in the standing than in the sitting pos- ture ; in the sitting than in the recumbent. If we do not inform ourselves of these peculiarities, we may fall into great mistakes. In disease the pulse may acquire a degree of frequency which is scarcely calculable; and the less so because, when it is extremely frequent, it is also extremely feeble ; it will reach 150, 160, or even 200 beats in a minute. In other cases, — as in apoplexy sometimes, and in some organic affections of the heart — the pulse will become extremely slow. The slowest pulse I ever felt was that of a man sixty-eight years old, who was for some time a patient of mine, with diseased heart and dropsy. His pulse was often no more than 25 in the minute. He died suddenly in his chair, and I was very desirous of examining his body, but his widow would not allow it. In the 17th volume of Dun- call's Medical Commentaries a case is related in which the pulse was as slow as nine beats in the minute. We learn a good deal in certain disorders from the vari- ations and JJuctuations of the pulse in respect to frequency — in hydrocephalus, for example, and in continued fever. Irregularity of the pulse is another condition which is often full of meaning, and of interest. I hope, as the lectures proceed, to be able to point out the bearings of these several qualities of the pulse upon our views of disease, and especially upon its treatment. At present I must repeat that I pretend to do no more than furnish you with a few samples of the phenomena that characterize disease. Irregularity of the pulse is natural to some persons. I have a brother who enjoys very good health, and whose pulse is habitually irregular ; I have been told that when he was ill with a fever at school, it became regular. I have heard of several precisely similar cases. There are two varieties of irregular pulse — in one the motions of the artery are unequal in number and force, a few beats being from time to time more rapid and feeble than the rest : in the other variety a pulsation is from time to time entirely left out — the pulse is said to intermit. These two varieties may coincide in the same person, or they may exist independently of each other. Irregularity of the pulse may be caused by disease within the head ; by organic disease of the heart; by simple disorder of the stomach; or it may be merely the result of debihty and the prelude to the complete stoppage of the heart's action from asthenia. How important it must be to ascertain and construe each of these mean- ings of the same symptom ! It may indicate mortal disease — it may imply no danger at all ; it may afford no clue to any available treatment ; or it may teach us how to ■ward off impending dissolution. Another most important quality of the pulse is what is called its hardness, or incompressibility. You find that you can scarcely abolish the pulsation by any degree of pressure ; the blood still forces its way through the artery beneath your finger. Sometimes it is felt to strike a large portion, also, of the finger, and then we say that the pulse is full, or large, as well as hard. When it strikes a very narrow portion of the surface of the finger, it is compared to a thread ; it is a small pulse : and if at the same time it be hard, such a pulse is often described as a wiry pulse. It requires some education of the finger to appreciate with exactness the several varieties of the pulse, even those which are practically important ; for many liave been mentioned by authors which are purely fanciful or useless and unneces- sary refinements. ^ow this hard pulse I shall soon have to speak of again, in connection with the I I DISORDERED FUNCTIONS. 99 freatrnent required in inflammation. It is one of the best warrants we have, in many cases, of the propriety of bleeding our patient. It does not occur, however, m all inflammations, and it may occur when there is no inflammation. It may depend upon hypertrophy of the left ventricle of the heart, and then it is beyond the reach of blood-letting as a remedy. It often seems to be connected with a morbid condition of the artery itself, brought on, as Dr. Latham has suggested, by the pernicious habit of dram-drinking. It is, however, at all times considered so much a guide to our practice, that whenever it occurs, it is very necessary to make careful inquiry into its real cause. Before 1 conclude this rough review of symptoms, I must point out one or two that belong to the third class mentioned ; viz., changes of sensible quahties. These include variations in the temperature of the body ; in the colour of the surface, and especially of the face ; the diminution or increase of bulk ; the latter, when general, we call corpulence ; when partial, swelling ; and various other symptoms, especially those which are detected by auscultation. Wasting, or emaciation, is sometimes the first observable symptom of disease. It occurs in complaints that are not commonly dangerous — as in dyspepsia, and in hypochondriasis, which is often connected with dyspepsia : and when it does appear, it marks the reality of the disease. This wasting happens also in many fatal mala- dies — in phthisis pulmonalis, for example — and in dropsy, although the dropsical enlargement sometimes masks it. It accompanies many acute diseases, and is reckoned an unfavourable symptom ; for it shows that the body is not properly nour- ished. Sometimes the emaciation is so extreme that the integuments give way — the bones of the patient are said to come through his skin. We have examples of symptoms that consist in changes of colour, in the flushed face of fever; in the pallor belonging to many diseases; in the contrast exhibited by the white cheek with its central red spot, so characteristic of hectic fever; in the yellowness of the skin and conjunctiva in jaundice ; in the dusky hue of the coun- tenance and the lividity of the lips noticeable whenever the due arterializaticn of the blood in the lungs is interfered with ; and in a long catalogue of cutaneous disorders. Various and full of meaning are the conditions and appearances presented by the tongue. A patient would think you careless, or ignorant of your craft, if you did not, at every visit, look at his tongue, as well as feel his pulse. Let me once more remind you of the peculiar importance of accustoming your- selves to take notice of the symptoms comprised in the last two classes, and especially in the last class, that you may attain to a quick perception of them. Changes of sensible quahties speak for themselves, and speak the truth. They cannot deceive us, as the verbal statements of even conscientious patients respecting their uneasy feelings might. They direct us in the choice and order of our inquiries : nay, they frequently spare us the necessity of putting many questions ; questions that might be irksome or fatiguing to our patients, or offensive to their natural delicacy, or even hurtful by letting them know our thoughts respecting their disorders. Of the changes in sensible qualities we judge by our own eyes, and ears, and fingers, and often by our noses also ; and the change is sometimes, of itself, perfectly characteristic of the complaint. Many more morbid phenomena, or symptoms, or tokens of disease, might have been mentioned ; but I have said enough, I hope, to rouse your attention to the extent and the fertility of this field of study. When we next meet I shall begin to consider one of the special forms of disease to which all parts of the body are liable —a disease that meets us at every turn — I mean injlammalion. 92 INFLAMMATION. LECTURE IX. InJJammation. Its Morbid and its Salutary Effects. Sketch of the Local ana Constitutional Fhenoinena of Inflammation as it occurs in External Farts. Examination of the Symptoms of Inflammation ; Pain ; Heat ; Redness ; Swelling. State of the Capillary Blood-vessels and of the Blood in a part inflamed. Inflammation must needs occupy a large share of the attention of both the sur- geon and the physician. In nine cases out of ten the first question which either of them asks himself upon being summoned to a patient is, " Have I to deal with inflammation here ?" It is continually the object of his treatment and watchful care. It affects all parts that are furnished with blood-vessels, and it affects different parts very variously. It is more easily excited by many external causes, and there- fore it is more common than any other special disease. A great majority of all the disorders to which the human frame is liable begin with inflammation, or end in inflammation, or are accompanied by inflammation during some part of their course, or resemble inflammation in their symptoms. Most of the organic changes of different parts of the body recognize inflammation as their cause, or lead to it as their effect. In short, a very large share of the premature extinction of human life in general, is more or less attributable to inflammation. Again, inflammation is highly interesting not only in its morbid phenomena and destructive consequences, but in its healing tendencies also. It is by inflammation that wounds are closed, and fractures repaired — that parts adhere together when their adhesion is essential to the preservation of the individual — and that foreign and hurtful matters are conveyed safely out of the body. A cut finger, a deep sabre wound, alike require inflammation to re-unite the divided parts. Does ulceration occur in the stomach or intestines, and threaten to penetrate through them ? Inflam- mation will often forerun and provide against the danger — glue the threatened mem- brane to whatever surface may be next it — and so prevent that worse and universal inflammation of the peritoneum, and the almost certain death, which the escape of the contents of the alimentary canal into that serous bag would infallibly occasion. [We doubt very much the correctness of this statement. Is it true, that wounds are closed and fractures united by inflammation, in the proper acceptation of the term 1 Union of divided surfaces, it is true, may be a resuh of inflammation ; but, that what has been tf rmed by surgeons "union by the first intention," takes place altogether independent of inflamma- tion, and that the occurrence of the latter is calculated to impede or prevent it, must be evi- dent, we think, to any one who will carefully watch its phenomena. Neither is it, we con- ceive, correct to describe the adhesions of the peritoneum which often precede the perforation by an ulcer of the coats of the stomach or intestines, and prevent the escape of the contents of the latter organs into the cavity of the abdomen, as a provision to guard against the uni- versal and fatal peritonitis that would otherwise occur. The inflammation by which the adhesions alluded to are produced, is as strictly a morbid process as that which caused the ulceration of the alimentary canal, and cannot, with any propriety, be viewed as a process setup, in anticipation of the escape of the contents of the alimentary canal into the peritoneal sac, and to guard against the danger that would hence result. The danger is, we admit, occasionally lessened or even entirely prevented by the adhesions, but we have no right to ■lifer from this circumstance, that the adhesions occurred to provide against its occtir- ience--C.] The foot mortifies ; is killed by injury or by exposure to cold ; — inflammation, if 1L be not anticipated by the knife of the surgeon, will cut off the dead and useless part. An abscess forms in the liver — or a large calculus concretes in the gall- bladder: how is the pus or the stone to be got rid of? If they make their way to the external surface of the organ, as they always tend to do, they enter the cavity of the abdomen, and excite fatal peritonitis. But a natural safeguard arises ; partial 'Uflammation precedes and prepares for the expulsion; the liver or the gall-bladder, 8s the case may be, becomes adherent to the Avails of the abdomen on the one hand, 1 INFLAMMATION. Q^ or to the intestinal canal on the other; and then the surgeon may plunge his lancet into the collection of pus — or the abscess or the calculus may eat their own way safely out of the body — through the skin, or into the bowel. Inflammation, hmited in extent and moderate in degree, becomes conservative by preventing inflammation more severe and more widely spread, which would be fatal. This is what I mean when I speak of the curative properties of inflammation ; and surely this process, which may save hfe or destroy it, deserves and demands our most careful study. But inflammation has a still further and peculiar claim upon our attention. The salutary acts of restoration and prevention just adverted to, are such as nature con- ducts and originates. But we are ourselves able, in many instances, to direct and control the effects of inflammation — nay, we can excite it at our pleasure ; and hav- ing excited it, we are able, in a great degree, to regulate its course. And for this reason it becomes in skilful hands an instrument of cure. This instrument the surgeon employs when, after letting out the water of a hydrocele, he wilfully excites inflammation of the tunica vaginahs, whereby its cavity is obhterated, and the re- accumulation of the fluid rendered impossible. It is by avaihng himself of the same agent that he is enabled to remedy many afliicting deformities : — to unite the cleft lip ; to close up the fissured palate ; to restore the dilapidated nose. There is no other special disease which is thus at our command ; we cannot, if we would, pro- duce a tubercle or a cancer. For all these reasons inflammation possesses a very high degree of interest for us — and for every one who would inquire, with any pros- pect of success, into either the pathology or the treatment of diseases. Of the amount of our knowledge respecting the intimate nature of inflammation, [ shall have occasion to say a few words by and by. We first become acquainted with inflammation in its symptoms, and as it displays itself externally. After we know what they are, it may be right, and cannot but be interesting, to inquire how they come about. Now the symptoms which, when they exist together in an ex- ternal or visible part, betoken or denote inflammation of that part, are four in number: pain — redness — heat — swelling; preternatural redness, and 'preternatural heat. These, from the earliest ages, have been recognized as the signals of outward inflam- mation, " Not83 inflammationis (says Celsus) sunt quatuor — rubor et tumor cum calore et dolore." No definition, however, or general description, can be made to embrace all the forms in which inflammation presents itself. We can give no useful account of it in the abstract ; and therefore I shall first sketch the phenomena of inflammation under one of its most common external forms ; and taking this as a type of the disease, proceed afterwards to trace its modifications and varieties, and to fill up the picture. Let us suppose, then, that a healthy man receives some local mechanical injury — that he falls, for instance, against a window, and gets a piece of glass stuck into his arm. In a short time he begins to have pain in that part of the arm, and this is soon succeeded by redness, and increased heat and swelling. The skin becomes of a bright red colour; the swelling increases. In the immediate place of the injury the swelhng is firm and hard, and exquisitely tender : at some distance from that centre, although there is still swelling, the parts are softer and more yielding. In the seat of the redness and swelling the patient experiences a sense of heat, a burning pain ; the part is sensibly hotter than natural to the touch of a bystander ; and if its actual temperature be measured by means of a thermometer, it will be found to exceed the temperature of the neighbouring surface. The part is injlamed. This is what is called phlegmonous inflammation. ^"Ktyfiovfi is a Greek word, and inflammatio is a Latin word, and they both mean the same thing, viz., a burning, or a flame. Phleg- monous inflammation is, therefore, in truth, a tautological phrase. But custom has assigned a particular signification to the epithet phlegmonous ; — it denotes that kind of violent inflammation in which the affected part seems all on fire ; and chemistry teaches that, philosophically speaking, there is actual and excessive combustion going on in that part. 94- INFLAMMATION. If the inflammation reach a certain degree of intensity, other signs of disorder piesent themselves at a distance from the injured spot. The patient usually at first feels chilly and feeble; but soon the temperature of the whole of the surface rises, the skin becomes hot and dry, the pulse more frequent and fuller and harder than is usual ; lassitude comes on, with headache, and wandering pains in the limbs. The patient is unable or unwilling to exert himself, and finds that he is unapt for any mental effort ; he cannot command his attention, gets confused, and restless, and sleeps ill ; he loses his appetite, his tongue becomes white, his mouth is parched, he is unusually thirsty, and the various secretions of the body are deranged and diminished. This is wJJammatory fever. This is an indirect symptom of inflammation, mani- festing itself through the medium, of the system at large. Various names have been given to this general derangement of the vascular and nervous systems : con- stitutional disturbance — sympathetic fever — symptomatic fever. It matters little what term is used, provided that we affix alwaj^s the same meaning to it : but inasmuch as the word fever, in this and in other languages, is taken to express a specific dis- ease, it would perhaps be better to employ the term pyrexia, as Cullen and others have done, to denote that secondary febrile state which grows out of, or is associated with prirjary local inflammation. Now what is the end of this remarkable state of things ? Wh}^ it may end in one of two or three different ways. Supposing the piece of glass to have been extracted, and proper measures to have been taken for subduing the inflammation, or even supposing that no other measure has been adopted except removing the bit of glass, then it will often happen that the phenomena just described will gradually recede and disappear ; the pain will abate, the redness fade, the swelling diminish, the heat decline, the pyrexia cease; until the part at length regains its usual sensa- tions and its natural appearance. When inflammation subsides in this waj'- it is said to be resolved, to tenTiinate by resolution ; and this is its most favourable and desira- ble mode of terminating, whenever inflammation occurs as a morbid process. But in many instances the inflammation does not thus subside. The irritant cause jtill remains in action — or the original intensity of the inflammation has been too great to admit of resolution — or the means proper to abate it have not been used — or ha^e not succeeded. The symptoms already described continue, and are aggra- vated in degree : at length the swelling begins to assume a more projecting and pointed form, and the skin in its centre to look white ; the central part of the swell- ing, formerly so hard, becomes softer — the pain is of a throbbing kind : a pulsative sensation, keeping time with the beats of the heart, is experienced in the part, and often a feeling occurs as if something had given way within it : at last (if art does not interpose) the cuticle breaks, and a yellow cream-like fluid is poured out, which we call pus, and upon its escape there generallj'' ensues a considerable and speedy abatement of all the local symptoms of inflammation — of the pain, the heat, the redness, the tumour. This is suppuration. Meanwhile, especially if the suppuration be long-continued, and the discharge of pus profuse, the character of the general febrile excitement undergoes a change. Slight but frequent shiverings, or feehngs of chilliness, take place, followed by flushes of heat, which end in perspiration. This is hectic fever. If the injury has been still more serious, and the inflammation more intense, the part which it has invaded perishes by the violence of the disease : there is a partial death. In that case the vivid red colour alters to a purplish or livid, or even a black, or greenish-black hue, the tension of the part exists no longer, the cuticle is elevated by a sanious fluid, the pain ceases, the part is devoid of all sensation — is dead and putrid, and exhales a pecuhar and offensive odour. This is mortificaiion. When ttie mjury has been extensive, a corresponding and characteristic change is again observable in the constitutional febrile disturbance. The patient grows more and more feeble, and delirious ; he has involuntary startings of the tendons of INFLAMMATION. 95 the voluntary muscles ; his pulse is weak and very frequent ; his tongue becomes dry, brown, tremulous ; his lips are black with accumulated sordes ; his countenance is shrunk, haggard, damp, and ghastly ; his stools and urine escape from him with- out his appearing to be conscious that they do so. This is typhoid fever. Under more favourable circumstances the dead or mortified part, which is called a slough, separates from the hving parts, and leaves a breach of surface. The sepa ration is effected by a vital process which is denominated ulceration ; but which 1 need not now describe. The cavity thus formed gradually fills up, and heals in a peculiar way. There is one other circumstance, not to be omitted in this rough outline of the local and general phenomena and effects of inflammation. If during its progress blood be drawn from a vein, it exhibits, after standing and coagulating, the peculiar appearance known by the name of the bifffy coat, i. e., on the surface of the coagu- lum, and to a certain depth in its substance, the colouring matter of the blood leaves the fibrin, which is therefore seen of a yellowish hue, or buff colour. Taking the preceding statement as a groundwork, let us look back upon it, and trace its particulars a little more in full. The four characteristic signs of inflamma- tion being pain, heat, redness, and swelling, it will be useful to examine more closely each of these symptoms in its turn. The pain varies much in different cases of inflammation, both in degree and in kind. It is differently felt, ceteris paribus, by different persons, according to their natural susceptibihties. It varies from the shghtest degree of sensibility to the utmost agony and torment. Parts which, when sound, are endowed with little or no capa- city of sensation (as tendons, ligaments, cartilage, bone), become often exquisitely sensible under inflammation. The organs of sense are variously affected in this respect. Thus the specific sensibihties of the mouth and nose are blunted by inflam- mation — those of the eye and ear are often rendered painfully acute. There are great diversities also in the kinds of pain. Sometimes it is of a dull aching charac- ter, as in toothache ; sometimes it is a pricking, tingling, smarting sensation — this is the case in some forms of inflammation of the skin, as in erysipelas for example, and in herpes ; sometimes it is sharp and piercing, as if the part were stabbed or cut with a knife — such is frequently the feehng in inflammation of the serous mem- branes, in pleurisy for instance ; sometimes the pain is tensive or stretching ; and sometimes there is scarcely any pain at all. This last chiefly happens in the mu- cous membranes and in the parenchymatous textures of organs. Very often thu pain is a "bulking" or throbbing pain — every beat of the heart makes itself felt in the tender part. The pain of inflammation results, no doubt, from the implication of the nerves in the diseased process. The stretching of the vessels and textures adds to the pain. Everybody who has been plagued by boils (and few escape them) has had proof of this : the pain is most harassing a short time before the ripening little tumour gives way, or is laid open by means of a scalpel ; but as soon as the distension is thus relieved, perfect ease and comfort ensue. It is the same in com- mon earache. It is upon this principle, I beheve, that the differences in regard to pain, which occur in different structures under inflammation, are partly to be ex- plained. Speaking generally, there is more pain felt in external inflammations, and in the inflammation of investing membranes, than in inflammation of the substance of the viscera, or of the lining membranes ; and it has been conjectured that this may be because, in the latter cases, the parts affected have fewer nerves of common sensation. But I do not think this explanation satisfactory. If it were well founded we should not have such exquisite pain in some of the textures already mentioned, which appear to be furnished with very few nerves of common sensation, and scarcely feel at all in their healthy state : tendons, ligaments, and cartilages, I mean I think it will be found that most pain is felt in those parts which are least capable of yielding — in which the tension produced by the swelling, or the tendency to swell, is the greatest. The substance of the liver, spleen, and viscera generally, is soft and yielding — the mucous membranes are spongy in their texture, and oftett attached to the subjacent parts in loose folds, and they allow of an accumulation o-' 96 INFLAMMATION. blood within them without becoming much stretched, or very tense. The investmg serous and fibrous membranes are more tightly appHod, and much less capabl^i of yielding : and their inflammation is usually attended with severe pain. The pain that belongs to inflammation sometimes precedes any other apparen change. This is specially observable in respect to internal parts. Sometimes the pain is continued and uniform. Sometimes it is continued, but irregular in severity, having periods of great exasperation : sometimes again it is intermittent, and even periodic. It is an unsettled question that has often been mooted, whether in inflammation, :he slate of the blood-vessels is determined by that of the nerves, or the reverse. Mere nervous pains are known sometimes to be followed by congestion of the part in which they are felt. Whatever may be the true state of this question of priority, it is certain that the disordered condition of the blood-vessels, when produced, greatly augments the sensibility of the part. We may suppose that this depends, partly on over-distension and stretching of the vessels and fibres, partly on pressure made upon the nerves by the swelling. It is important to remark of the pain belonging to inflammation, that it is usually aggravated by pressure: frequently it is not felt at all, except when pressure is somehow made upon the afft'cted part — intentionally by the medical man — or acci- dentally, from the movements or position of the patient. This is tenderness. And this is a point which requires a little further notice. I say the aggravation of the pain by pressure is an important circumstance, because it continually helps us to distinguish pain that is inflammatory from pain that is not inflammatory. Thus pain of the abdomen may result from colic, or spasm — from a distension of the intes- tines by air, and a stretching of the textures and nerves belonging to them : and this sort of pain will mostly be relieved by pressure ; you will find patients lying upon their bellies across the back of a chair for the sake of obtaining ease : but if the pain proceed, as it may, from inflammation of the peritoneum — oh! then the gentlest pressure, even that of the superincumbent bed-clothes, causes intolerable torture. The suddenness with which the pressure is made — and its being made on a part only of the suffering organ — these circumstances have much to do with the augment- ation of the pain ; and it is curious, and instructive too, to know that gradual pres- sure, applied uniformly to the whole organ or part under inflammation, is sometimes so far from enhancing the pain, that it relieves or removes it. Dr. Elliotson puts a very good case in illustration of this. " If (he says) you have a blister upon the sole of the foot, or at the ball of the great toe, and you rest gradually upon the part, the pain becomes mitigated, till at last it seems to be almost entirely removed ; but the moment you take off the pressure, and raise the foot from the ground, you feel the part begin to throb — to throb with violent pain." Now all this exemplifies what I said just now — that though a deranged condition of the nerves, marked by pain, may, for aught I know, first lead to the vascular full- ness — yet the same fullness, and the distension which it implies, will greatly increase the pain. In fact, the expulsion of the blood by means of well-regulated pressure is made the foundation of certain proposed methods of cure. This has been lately recommended in hernia humoralis, or swelled testicle — what is now more scienti- fically called orchitis. It gives one a sort of horror even to think of pressure being made on the healthy testicle — much more when it is rendered preternaturally sen- sible by inflammation : yet, when properly managed, it is said (by Dr. Fricke, of Hamburgh, and others) not to increase the pain, but entirely to remove it, so that the patient can at once walk about the room ; and the disease is thus ultimately cured. In the same way it has been proposed to cure eiysipelas, and gout, and rheumatism. Without inquiring here into the general merits of this remedial expedient, I may remark that pressure, so employed as to benefit an inflamed part by supporting its strained and oppressed capillaries, must be steady, gentle, continued, and (above all) uniform pressure. All these conditions are strictly supplied in an apparatus recently devised by !>• Arnott ; whose air-press promises to be scarcely less useful to suffer- ing humanity than his earlier contribution to the comfort of the sick — the water-bed. It is sometimes necessary to recollect, especially when the existence of internal HEAT. ' 97 inflammation is suspected, that all expression of the sense of pam, and probably ail sensation of pain, may be prevented or abolished by ihe presence of stupor or coma. So also, if the nervous connection between the inflamed part and the sensonum be cut ofT, no pain is felt. Limbs in a state of palsy are often (though not always) des- titute of sensibility also ; and inflammation readily occurs in them, but is accom- panied with no pain. That mere pain will not constitute inflammation, must, I think, be plain to you. Spasmodic contractions of the muscles, slretchincf and tension of the tissues, a par- ticular state of the nerves, and other conditions which do not imply inflammation, may, nevertheless, be attended with severe pain. Let us next consider the heat. Of course, as I hinted before, this means prefernatural heat : the temperature of the part exceeds that which belongs to it in health ; but in truth, the heat is not in general so much increased as the sensations of the patient or his heightened sensi- bility would persuade him it is ; nor even so much as a bystander might suppose. The heat of inflammation does not rise above the maximum heat of the blood in the central parts of the body. The natural heat of the blood is about 9S° or 100°, but n fevers and inflammatory diseases it has been known to reach 107°, and the laximum heat of the blood in fever is probably the limit of the temperature as it exists in inflamed parts. The surface of the body, in its natural state, is not quite so warm as the internal parts, and the extremities are generally less warm than the trunk ; so that the contrast between an inflamed and a healthy part, in respect to heat, is greater in the extremities than on the trunk. Thus if a bhstcr be placed upon the chest, the heat of the part inflamed by its application will not exceed that of the neighbouring healthy surface by more than a degree or two ; while a blister applied upon the leg may occasion a difference of five or six degrees. John Hunter took great pains to ascertain the degree of heat produced in inflammation. He ex- cited inflammation in the cavity of the thorax of a dog, and in the vagina and rectum of an ass, and he could not find that the temperature of the parts thus inflamed ever exceeded that of the blood at the centre of the circulation. He did not neglect the opportunities that came before him of making similar observations on the human body. He had occasion to tap a patient in St. George's Hospital for hydrocele : as soon as he had let the fluid out, he introduced a thermometer through the puncture made by the trocar, and placed it in contact with the testicle. He found the tempe- rature to be 92°. He repeated this experiment the next day, when inflammation had set in, and then the thermometer rose to 98|°. So that here an increase of 6?° had taken place in consequence of the inflammation ; but even this, you see, did not go beyond the natural warmth of the blood. The increase of heat depends upon the increased influx of arterial blood, and therefore of oxygen, into the part. Animal heat appears to be derived, in all cases, from the mutual action that takes place between oxygen and the elements of the; tissues, their carbon and hydrogen ; the tissues themselves undergoing meanwhile perpetual changes, which, in the natural condition of the body, belong and are necessary to health. In a part that is inflamed this kind of combustion is, I say, excessive in amount ; while unnatural metamorphoses occur in the affected tissues. It is, however, a curious fact, a fact worth remembering, that the heat of inflam- mation does not transgress or surpass that of the blood in the central parts of the body. Heat alone neither constitutes nor impHes inflammation : for parts of the body may be made preternaturally hot by holding them before the fire, by friction, by exercise, while there is no inflammation. I apprehend that increased heat is essential to inflammation, in some stage or other of its progress, although there are cases in which the augmented temperature is not perceived or appreciated. Sometimes the increase of heat is very slight, and may be easily overlooked, there being, nevertheless, unequivocal inflammation, redness and swelling, which go slowly into suppuration. The heat is often concealed from the observation of the physician or the surgeon, by the situation of the part afl>3Cted, anu it escapes the notice of the sufferer, because the sensibihty to heat is less gencn It v 7 I \)S SWELLING. diffused through the bodj' than the susceptibility of common sensation. The heat of inflammation is usually less felt and less complained of by the patient than the pain. A vivid sensalion of heat is pain. The redness of inflammation must also be prdernalural in degree, for many parts of the body are by nature, and in health, more or less red. This phenomenon depends upon the greater quantity of blood contained in the vessels of the part, and sometimes also upon the extravasation of a portion of the blood into the affected tex- ture. There is more blood than usual in those vessels which naturally carry red blood ; red blood enters too into vessels which in the healthy state are destined to receive and convey colourless fluids only, or which naturally admit so few of the red particles, that from their paucitj^ and the quickness of their motion, they cannot be seen. We are sure of this from v.-hat takes place in ophthahnia. Doubtless, also, the redness is sometimes increased by the formation of new vessels which admit the colouring particles of the blood in visible numbers. That the vessels which naturally circulate red blood are actually distended and en- larged in inflammation, there can be no doubt, John Hunter (whose treatise on in- flammation is a mine in which all succeeding writers have dug), excited inflammation in one of the ears of a rabbit, and then killed the animal. He next injected the head and ears from the aorta, so that the fluid injected, passing through both the carotids, was driven with equal force towards each ear. The arteries of the in- flamed ear were enlarged one-third beyond their natural size, and arteries in it were injected which had no visible counterparts in the sound ear. That the apparent increase in the number of blood-vessels is often owing to the circumstance that red blood enters tubes Avhich already existed, but which did not previously admit the colouring matter, or did not admit it in sufficient quantity to be visible, is evident from the rapidity with which the redness may be produced in many textures : in the eye, for example, it may be effected in a few seconds ; and many of the vessels which become suddenly apparent are evidently continuulions of the trunks that could be seen before. There is much variety in the tint of the redness of inflammation, depending on the kind and degree of the inflammation, and on the nature of the part aflected. Sometimes the redness is bright and vivid, as if the part were full of arterial blood : this generally happens in the acuter forms and the earlier stages of inflammation. Sometimes the redness is dark, or livid, or purphsh ; more as if the part were gorged with venous blood : this occurs in some of the chronic or sluggish forms of inflammation, and it is often the case when there is a tendency to gangrene. Some- times the redness is distinctly circumscribed, or in patches ; and sometimes it is dif- fused in a general blush over a large space. The redness may, and often does, remain for some time after the inflammation has ceased. Now seeing that redness accompanies inflammation of the external parts, we pre- sume that it exists also in internal inflammation : indeed we may convince ourselves that it is so. If a portion of intestine be drawn out through a slit in the parietes of the belly of a dog, and suffered to remain exposed to the air, it will soon inflame ; and inflaming, it grows red. We see also that internal parts are left red after death, which parts we have no other reasons for knowing had been inflamed duiing life: and we infer that redness may have been present during life, although we find none remaining when the body is examined. That when it has been owing to mere full- ness of the natural blood-vessels, it may disappear with parting life we know, because .he same thing happens externally, as in erysipelas and scarlet fever: but in such cases the inflammation has not gone to any great height. It is proper to remark that, as the absence of redness is no proof that there has not been inflammation, so its presence is no proof of the contrary. There are many kinds of redness, both within the body and on its surface, that have nothing to do with inflammation : yet some of these are very apt to be mistaken for traces of inflammation. I shall endeavour to instruct you how to avoid such a mistake, when wf come to examine the morbid anatomy of particular forms of disease. 1 INFLAMMATION. Qti While inflammation actually exists, redness, of some shade or degree-, is seldom absent, even though the other symptoms may be scarcely apparent. Lastly, let us take a glance at the swelling. This also depends, in some degree, upon the distension of the blood-vessels ; but no great amount of swelhng can be attributed to this cause ; and as much as does proceed from it occurs early in the dis- ease. Some, also, and usually almost the whole, of the swelling, results from the presence of matters poured out into the interstices of the affected part. These effused matters are of very different kinds, although they are all modifications of the same hquid, the blood. I mentioned, in describing the condition of the part inflamed, that the central portion of the swelling is, at first, hard and resisting, while, at a greater distance from the centre, the swelling is softer, and yields more readily when pressed by the point of the finger, and, sometimes, even pits a little under that pressure. Now, the central hardness is to be ascribed to an effusion into the areolar texture of the part, of a fluid, which, transparent at first, speedily becomes opaque and more consistent, and at last assumes a sohd form. This is what is commonly called, in this country, coagulable lymph. The softer swelling at the circumference of the tumid part proceeds from the effusion of a thinner fluid of serum into the areolar tissue. Under very violent inflammation, blood, in substance, is poured out into the same parts. When the central portion of the swelhng softens and becomes pointed, this part of the whole enlargement is owing to the presence of a quant'ty of pus. The different hquids that I have now been mentioning are of great import- ance, and play a conspicuous but diversified part in altering textures. Blood, serum, albuminous fluid or coagulable lymph, pus. They are called the products of inflam- mation. We are sure that inflammation has been at work, if we meet with certain of these products. We are not sure that there has been inflammation if we perceive mere redness : — we are not always sure if we find serum only : — we are not sure if we find blood alone : — we are tolerably certain if we discover pus ; we are cer- tain, at least, that there has been inflammation somewhere, though doubts have been started whether the pus is not sometimes conveyed from an inflamed part to other parts of the body. We are quite sure that there has been inflammation in a part if we find coagulable lymph in that part. This often remains, as a monument of the inflanamation, during life ; it frequently becomes organized, furnished with blood- vessels ; and a great number of changes, some reparative, some morbid, depend upon its presence. I shall have to recur to these products of inflammation here- after. The degree of swelling in different cases depends partly on the intensity of the inflammation, partly on the nature and texture of the structures affected. I need scarcely observe that swelling may exist without any inflammation. Her- nia, simple anasarcous enlargements, dislocations, will occur to you as every day examples of swellings that have no necessary connection with inflanamation. On the other hand, inflammation may exist without any appreciable swelling. Inflammation of the sclerotic coat of the eye, for instance, may be present, without aiiy swelling cognizable by our senses. We have seen, in this review of the symptoms of inflammation, how much they severally depend, the pain, the swelling, the redness, and the heat, upon the increased influx of blood into the part. It may not be uninteresting to pause here for a moment to mquire what has been ascertained in respect to the actual condition of the capillaries of an inflamed part, and of the blood they contain. Much has been learned on these points by patient and minute observation with the microscope, and by reasoning upon the facts thus brought to light. Kaltenbrunner, Gendrin, Miiller, and others, have corrected many erroneous notions which formerly prevailed upon this subject. In or Jer to comprehend the minute phenomena of inflammation, you must have a clear conception of the constituent elements of the blood, and of the main changes u is liable to undergo. The rough anatomy, rather than the chemistr)'^ of the blood, L«; what I allude to. The blood consists of red particles, or globules, and of a transparent colourlestt fluid called lymph, or fiquor sanguinis. Muller succeeded in separating theso two 100 BLOOD AND BLOOD-VESSELS. constituents of the blood b}'- filtering through paper that of a frog, which contains very large red globules. The liquor sanguinis thus obtained separates spontaneously, by coagulation, into two parts, into serum and fibrin, the last having previously ex- isted in solution in the liquor sanguinis. When the coagulation is sufl^ered to take place Avithout any attempt to remove the red particles, these are entangled and enclosed in the fibrin as it becomes solid; and the common well-known appearance of clot and serum results. You may even then wash out the red particles from the clot, and leave the fibrin. I must now recur to the experiments and observations of Kaltenbrunner. I should have told you, on a previous occasion, that various stimulant substances, mechanical or chemical, when applied to the web of a frog's foot, will produce irregular dis- turbances in the circulation, which irregular disturbances you are not to confound with true congestion : in like manner you must avoid confounding them with the phenomena of inflammation, which are always preceded by those of true conges- tion. Kaltenbrunner ibund, hkewise, that (just as in congestion) a certain interval of time generally happened between the application of the exciting cause and the apparent development of the inflammation. This accords with what we observe to be the case in respect to local injuries, and to those local internal inflammations that are apt to be produced by exposure to cold. There is a pause before the mischief lights up: or (to take the metaphor from the eggs of birds) there is a period during which the inflammation seems to be hatching, and it is called accordingly the period of incubation. Kaltenbrunner describes inflammation to be a regular process — as he had also described congestion to be. On looking, then, at the web, to which some violence had been done, he observed, after the first irregular disturbances were over, and when the period of mcubation had elapsed — he found (I say) that an afflux of blood took place to the part about to be inflamed ; the velocity of the blood in the vessels was srreatly accelerated ; the vessels themselves were distended and tense, and therefore disposed to tighten upon the blood they contained — the functions of the part, that is to say, the secretion and absorption of lymph, were interrupted ; the blood underwent an evident change — ■ or it failed to undergo the proper changes : its globules stuck together, and the parenchyma of the web became tumefied. Now all this is just what I represented to you in a former lecture as constituting the state of the blood-vessels under active congestion ; and I also told you, at the same time, that such congestion was just one step short of inflammation. The congestion now described increases, until, at length, this remarkable alteration happens : the capillary tubes, instead of tightening upon their contents, dilate, or grow larger; the circulation, at first so rapid, begins to be delayed in some of the capillaries ; the direction of its motion becomes uncertain ; it oscillates, as it were, irregularly in those vessels, and at last stops altogether, the globules cohering in irregular masses, and thus points of sJagnution are formed ; and these points of stagnation, if the affection goes on increasing, augment in .«ize, and multiply in number. Around them, beyond their circumference, the circulation remains still very rapid, and the congestion persists. This is injlammation — of which the characteristic or pathognomonic feature is the formation of these points of stagnation. Now one early consequence of the stagnation of the blood is, that a portion of it transudes through the sides cf the vessels containing it : the serum, or the liquor sanguinis, or even sometimes the blood itself; red particles and all. The effitsed serum remains, or is absorbed, as serum. The fibrin, when it has so transuded, concretes, and thus the interstices of tissue are filled up, and layers of coagulable or coagulated lymph are formed upon the surfaces of inflamed parts, constituting false membranes. Under certain circumstances, already adverted to, other or further changes take place. Microscopic investigation has recently discovered a number of colourless corpuscles floating in the liquor sanguinis. These corpuscles, passing into the interstices of the inflamed tissue, or stagnating in its capillaries, suffer remarkable changes, assume a yellow colour, and are thus transformed into globules of pus. So that pus is nothing else than altered blood. During the inflammatory state, the cor puscles sometimes appear to muhiply with surprising rapidity ; and are poured forth, BLOOD AND BLOOD-VESSELS. 101 in their new shape, like a secretion. Pus streams, almost, from certain mucous membranes under inflammation. Whether the colourless corpuscles be independent of the red globules of the blood ; or whether, as some suppose, they are originally derived from the red particles, are questions which must be regarded as being a;//i»c sub judice. Certainly much which used to be thought mysterious in the process of inflamma- tion has been rendered more simple and intelligible by modern research. Most of the events or consequences of that process are traceable to the stagnation of the blood in the capillaries, and to the changes which the stagnant blood subsequently undergoes. I must not omit to tell you what Kaltenbrunner says about the direct absorption that takes place in the inflamed part. He found that the colouring matter, and the adipose matter, were thus taken away. The web of a frog's foot is speckled over with little stars of five rays, caused by a black pigment. The extremities of these rays gradually disappear until mere black points are left in the places of the stars. He says that he has been lucky enough to catch the exact moment when the blood, circulating rapidly in the canals, has detached a particle from one of the rays, and carried it into the torrent of the circulation. In the sound state, the mesenteric vessels of the rabbit are surrounded with much fat. When the mesentery is inflamed, the adipose cells soon empty themselves : a number of capillary canals are developed upon the walls of those cells, and it is probable that the fat is carried off by the blood circulating in these canals. Another curious and interesting sight witnessed by Kaltenbrunner, was the form- ation of new blood canals. He says that in an organ recently inflamed, when th-e circulation is accelerated, globules of blood may be seen to sally, all of a sudden, from some capillary, pass into the surrounding parenchyma, force themselves a channel, and reach another capillary canal. Thus a new capillary channel is formed ; the blood circulates through it ; its formation is often the work of a few seconds only. As the same thing is repeated in different parts, a rich net-work of new capillary canals is added to the original set, whereby it happens that organs which in the sound state are but slenderly furnished with capillary vessels (as the mesentery of the rabbit) present an astonishing number of them under inflammation. W^hile new capillary vessels form, the old ones dilate, and assume the appearance of small arteries or veins according as they, are continuous with the arteries, or border on the veins. The fact has long been known that when coagulable lymph has been poured out, in inflammation, blood-vessels gradually form in it, whereby it obtains a vascular connection with the surrounding textures, and becomes a living portion of the body : and these microscopic disclosures of the manner in which they form appear to me to possess a peculiar interest. I should be making a very wasteful use of your time and of my own, if I entered into the undecided and unprofitable disputes that have been raised respecting the vital conditions of the vessels engaged in inflammation. While some have pretended that the action of the smaU vessels is increased, others assert that it is diminished : that the vessels are in a state of atony. For my own part I have never yet seen any conclusive evidence that the capillaries possess any vital contractile power dis- tinct from their elasticity. And granting them such a power, it is extremely difficult to conceive how any increase in their vital contraction should produce the changes that are observed in inflammation. Certainly we have no warrant that any such contraction takes place, in the results of microsco[)ical examination of the vessels of an inflamed part. The inquiry might be more properly directed, I think, towards the vital conditions of the nerves of the part : but here we are wholly in the dark, 1 do not think it so evident as some have supposed it to be, that a greater quantity of blood than is natural passes through an inflamed part in a given time. It is quite true — and it is proper that you should be aware of it — that the arterial trunks leading to an inflamed part often pulsate vvith more than ordinary force, and, if opened, pro- iect a jet of blood further than they would naturally project it. It is true also that 1 2 102 INFLAMMATION. a venous trunk leading from an inflamed part will discharge blood faster and more copiously than a corresponding vein leading from a sound part. Mr. Lawrence declares that he has frequently tried this experiment, and always with similar results. Finding it necessary to bleed a patient whose hand and forearm were inflamed, he has directed a vein to be opened in both arms at the same moment ; and he has ascertained that about three times more blood flowed, in a given time, from the vein of the inflamed limb than from that of the sound. But it scarcely follows from this that more blood circulates through the whole of the part actually inflamed : the activity of the circulation in the vessels that remain pervious, and are merely con- gested, around the focus of inflammation, is greatly increased, and more blood circu- lates through the limb: and yet the blood may be stagnant, or scarcely circulate at all, in the very part that is strictly and truly inflamed. However, the fact of this increased afflux of blood towards the parts concerned in the inflammatory process 13 an important one. LECTURE X. Inflammation continued. Bitffy Coat of the Blood. Terminations or Events of inflammation. Fesohifion — Delitescence — Metastasis. Effusion of Serum. Effusion of Coagrdable Lymph, or Fibrin. Organization of this Lymph. Suppuration. Ulceration. In the last lecture, after giving a very general sketch of the phenomena of inflam- mation, I particularly considered its four characteristic symptoms, pain, heat, redness, and swelling: and endeavoured to describe the changes that take place in an inflamed part, as they are seen through a microscope. There is one very remarkable and important circumstance which is not often absent in cases of inflammation, but which hitherto I have barely mentioned : I mean a peculiar appearance of the blood itself after it has been drawn from a vein. A portion of the fibrin at the upper surface of the coagulum parts with its colouring matter; so that upon the deep red clot there is to be seen a layer of yellowish, or sometimes of a bluish white colour, varying in thickness from a line or two to per- haps three-fourths of an inch. This uppermost whitish layer of the coagulum is called in this country the buffy coat of the blood. Sometimes the surface of the buff^y coat is flat and wide ; but often it is contracted and concave ; i. e., the diameter of the buffy surface is less than the diameter of the lower portion of the clot, and it is hollowed out into a cup-hke form. Accordingly the blood is said, in these circum- stances, to be both buffed and cupped. The formation of this buffy coat appears to be favoured by many circumstances which have nothing to do with the disease under which the person may be labouring ; such as the size of the aperture in the vein, the manner in which the blood flows, the form and size of the vessel that receives it: but it does not occur at all except in certain conditions of the system ; and it belongs so especially to the state of inflammation, that blood having the buffy coat upon it is often spoken of as inflammatory blood, or, with less propriety, as inflamed blood. Both these expressions indeed are incorrect, for inflammation sometimes exists with- out bufiy blood ; and buffy blood sometimes occur without inflammation. The phe- nomenon is, however, upon the whole, a very valuable index of the nature of many cases of disease, and an important guide in their treatment. Now this crust, or upper layer, or buffy coat, consists of pure fibrin, mixed with a certain quantity of serum, which M. Gendrin says is fuller of albumen than the rest of the serum. You will not fail to notice the great analogy that subsists between the buffy coat, and the coagulable lymph poured out in inflammation, either into the texture of the part, or (as I shall show you more particularly by and by) upon its surface, forming what are called false membranes. Both in appearance, and in chemical composition, the two seem to be identical; and no doubt exists in my mind BUFFY COAT OF THE BLOOD. 103 of their being actually the same substance: the separation in the one case taking place from the blood while contained in its proper vessels ; in the other case from the blood after it has been removed from the body. There has been a great deal of speculation among pathologists as to the cause of this buffy coat. From its situation it is piain that gravity has something to do with its formation: that the red particles, leavmg the colourless fibrin before it coagulates, sink downwards by their own weight. But though the subsidence of the red par- ticles is occasioned by their greater specific gravity, their separu'ion from the fibrin is not to be explained upon that principle alone. If it were, then it would follow that the slower the coagulation of the blood, the more time would there be for the sinking of the red particles, and the thicker and more decided would be the buffy crust : and it used to be supposed that this was the true explanation of the phenome- non. Careful observations, however, have shown that the formation of the buffy coat often takes place when the coagulation of the blood is unusually rapid. Dr. Davy and M. Gendrin both state, as the result of much attention to the subject, that the coagulation of blood drawn from a vein during inflammation begins sooner, and is more quickly completed, than that of healthy blood. But certain observations made and published by Dr. Stokes have settled this question. He noted the appear- ance of the blood in twenty-seven cases. In fifteen of these the buffy coat presented itself; in twelve it did not. Now in three of these twelve, the coagulation of the blood did not begin till from tv^enty to forty minutes after it was drawn ; and in four others there was no coagulation for eight minutes. So that theij was plenty of time for the red particles to have left the fibrin, and subsided ; but they did not do so. On the other hand, in twelve out of the fifteen cases in which the blood was buffed, the coagulation took place in five minutes ; and in the remaining three it was delayed only fourteen minutes. The slowness of the coagulation, therefore, although it may and doubtless does favour the subsidence of the red particles when they have a tendency to subside, cannot be regarded as the cause of the buffy coat. The red particles very soon begin to subside when they subside at all : you may tell, immediately after it has been drawn, and prior to any coagulation, that blood is about to buff, by a peculiar bluish hue on its surface. A German writer, Shroeder Van der Kolk, has stated observa- tions to the same purpose, showing that in the blood abstracted by venesection during inflammation there is an unusual disposition to a separation of the fibrin from the red particles ; a sort of repulsion between them. This separation takes place in mere films of blood, so thin as not to permit a buffy stratum to lie above a red stratum. The fibrin and the red particles then separate from each other latterly by horizontal movements, and the films acquire a speckled or mottled appearance, quite at, charac- teristic of the state of the blood as the buffy coat itself. That the formation of the buffy coat depends, however, upon some vital change in the blood appears probable,, from this — that it will sometimes vary greatly in different portions of blood abstracted at the same bleeding. Thus, if the blood be received into four different cups in succession, it will, perhaps, be buffy in the first, and in none of the others; or it will be buffy in the last only ; or in the second and third only, the first and fourth cups being free from buff. Attempts have been made to explain these rapid variations. Some have fancied that the inflammator' .?tate having been remedied by the removal of a certain quantity of blood, the blood that flows subsequently is, therefore, without the usual index of the presence of inflammation ; but this explanation will not apply at all to those cases in which the portions last drawn are the only portions that exhibit the buffy crust. Others have suggested that the state of the nervous system is principally concerned in these sudden changes ; that the depression caused in the outset of the bleeding by fear, and the faintishness produced towards its termination by the lo^s of blood, may pre- vent the appearance of the buffy coat on the first and last cups, when it shows itself only in those that are intermediate between the first and last. We cannot rely much on those hypothetical explanations : I mention them to impress upon your memory the facts which they are intended to explain. 104 INFLAMMATION. There are two or three different forms presented by buffy blood ; and with these you ought to be familiar. In one form the buffy coat is thick, tough, contracted, puckered at its circum- ference, and its surface is cupped. There is a complete separation of the red parti- cles, and a strong aggregation of the particles of the fibrin among themselves. The red portion of the coagulum is also, in these cases, round and contracted, of a globu- lar shape, firm, detached from the sides of the vessel, and floating, generally, in transparent serum. This is usually seen when the inflammation is violent ; when it occurs in strong and vigorous constitutions; and more I believe when it has its seat in certain tissues, in fibrous and serous parts especially. In another form, the w'hole coagulum is large, like a cake, or of the figure of the vessel containing it, not so much collected into a spherical shape ; and the buffy coat is thin and flat, and easily broken. Here there is an imperfect separation of the colouring matter from the fibrin, and no great aggregation of the particles of the latter. This kind of buffy blood is apt to accompany slight or partial inflam- mation. In a third form, the buffy coat is thick and abundant, but it is flat and soft, loose and flabby, like paste ; and the coagulum often adheres by its edges to the vessel in which the blood has been received : there has been considerable separation, and but slight aggregation. The serum is apt to contain a few red particles distinct from the clot. Such blood is commonly said to be sizy. Dr. Alison states that when it is ob- served, some other cause of general disorder of the system (continued fever, for example) usually co-exists with the local inflammation. Probably the qualities of the blood are altered, independently of the inflammation : the bufly coat taking place, in consequence of the inflammation, upon blood which was previously in a diseased or unnatural condition. It is a curious fact that blood drawn by leeches never exhibits the buffy coat. It seldom appears (yet I have seen it) upon blood that has been removed by means of cupping glasses. Ariirial blood is liable to the buffy coat. I have myself, twice at least, seen it upon blood drawn from the temporal artery. One of the patients was violently maniacal Avhea the blood was taken. The other was labouring under acute inflam- mation of the membranes of the spinal cord, of which inflammation he died. Blood is more likely to buff", cxieris paribus, when it is made to flow in a full stream, and when it is received in a deep and narrow vessel. On the other hand, the formation of the buffy coat appears to be hindered, when the blood 'rickles from a small opening in the vein, and when it is caught in a large flat vessel. It is said also, that the buffy coat may be prevented by adding to the blood a solution of caustic potass ; by keeping it for some time in a state of agitation ; by receiving it in a very cold vessel ; or by suffering it to fall from a height of three or four feet, [n this last case M. Gendrin supposes that the prevention is owing partly to the agitation which the descent of the stream produces in the blood already in the vessel, and partly to the circumstance that the blood is cooled as it passes through the air. It is seldom, I believe, that the buffy coat appears on blood drawn at the very outset of inflammation ; generally a day or two elapses before it shows itself. This is just what we might expect if it be true, as it has been conjectured, that this un- natural property of the blood is acquin^d only in the course of its transit through the vessels of the inflamed part. I have dwelt the longer upon this peculiar appearance of the blood, because it really is of very great importance in determining the nature of various complaints, and in directing our treatment of them. Speaking generally, when a given organ is inflamed, the buffy coat is more marked in proportion to the intensity of the iii- llammation : when the organ is not known, it is more likely to be of a fibrous or a serous texture, in proportion as the blood is more decidedly buffed. The api)earance hi the buffy coat is especially valuable as an indication of treatment in cases con- ccrnmg wnich we are in doubt whether they are inflammatory or not. On the BUFFY COAT OF THE BLOOD. 105 Other hand, if we have good evidence, in other symptoms, of the existence of m- flammation, we are not to be shaken in our opinion by the absence of the buffy coat. Inflammation may certainly exist without it. I am not speakino; now of shVht cases of inflammation, which do not disturb the general system. You would not look for buffy blood in the inflammation that supervenes on a cut finger, or in a small boil; but in serious inflammation, attended with pyrexia, the buffy coat may be wanting. It is not unfrequently absent in inflammation of the mucous mem- branes, especially in inflammation of the mucous hning of the bronchi. I stated before — what is quite necessary to remember — that buffy blood is not con- fined to cases of inflammation. The blood of persons affected with general plethora is often found to present a buffy coat: and the same thing is true in respect to pregnant women. Buffy blood is no necessary measure of the danger of the disease. The blood drawn in acute rheumatism is always very much buffed and cupped : yet so long as the disease is confined to the joints, it is quite free from danger. Neither is the appearance of buff" on the blood, taken by itself, a sufficient war- rant for abstracting more blood : for the blood will sometimes, in common inflam- mation, continue to be buffy, long after it has ceased to be useful, or safe, to bleed the patient. [In nearly all the strongly developed acute inflammations, there is an excess of fibrin and of the colourless or lymph globules of the blood. From three parts in a thousand, which, accord- ing to Andral, is the average proportion in health, the fibrin has been found to rise to six or eight parts. In some cases, MM. Andral and Gavarret found it as high as ten parts in the thousand ; namely, in pneumonia and acute articular rheumatism. The excess of fibrin was noticed by Andral in cellular inflammation, or simple phlegmon, in acute inflammations of the skin, as in burns and erysipelas, in mercurial stomatitis, in phlegmasice of the mucous membrane of the respiratory and digestive organs, in acute cystitis, either simple or com- bined with nephritis, in all of the phjegmasise of the serous membranes, in inflammation of the lymphatic glands, and in softening of the brain. But it does not follow the pustules of small jjox, the exantheme of measles or scarlatina, or the patches in dothinenteritis. The increase of fibrin in the blood is manifested so soon as the inflammation begins. M. Andral is inclined to believe, from what he has remarked in cases of burns, that the disease commences in the solids before the change occurs in the blood. The sympathetic fever in the phlegmasiae is, he thinks, due to the alteration in the blood from the excess of its fibrin. With the increase of fibrin, the proportion of red particles remains unafiected. Even in anemic cases, and in low fevers, in which there is a diminution in the proportion of fibrin, tlie latter becomes abnormally increased whenever inflammation supervenes. To this it may be objected, remarks Williams, that this fever frequently rises high before the blood has begun to exhibit the buSy coat, often subsides when the buffy coat is most abundant, and is sometimes wholly absent when the blood is both buffy and cupped, as in sub-acute rheumatism. But he admits that it is very probable the excess of fibrin may con- tribute to the excitement, and it certainly materially aflfects the duration and products of inflammation. It would appear very certain that the formation of the buffy coat in inflammatory diseases is in a great degree dependent upon this excess of fibrin. It is found only in cases where the proportion of fibrin is abnormally augmented. In ann?mia, the only disease excepting inflammation, in which the bufl^y coat is observed, notwithstanding the quantity of fibrin may be abnormally small, still it is very generally in excess in relation to the red globules. The buffy coat forms, also, upon the blood drawn during the latter period of pregnancy: when the blood also presents an excess of fibrin. In inflammation the buffy coat is fre- quently not present in the blood drawn in the early period of the disease, the fibrin no; being as yet sufficiently abundant, while it becomes less and less marked as the intensity of the disease and the excess of fibrin diminish. In cases of indirect prostration, incident upon great intensity of inflammation, the blood first drawn may be without the buffy coat; it becoming api)arent only as the pulse and heat of the surface rise, as they often do in such cases, under the use vi the lancet. According to Andral, the newly-formed fibrin in inflammation coagulates more slowly than the old. — See Andral, Patholog. HcBmatol. ; and Williams, Frincijiles of Medicine. — C] Some pathologists enumerate several terminations of inflammation. Others quai- rel with that word, as inappropriate ; alleging, with great truth, that the inflamma- tion does not necessarily cease or terminate whenever these so-called " terminationjs" happen. Some of them are in fact "co-existent states, or successive stages in the 106 INFLAMMATION. progress of the same inflammatory disease." It has been proposed to speak ratlier of the local effects of inflammation : but even this phrase is not free from objection, for sometimes (though rarel}^) there are no local effects produced, beyond the four symptoms which characterize the inflammation itself. I think the events of iiijhtm- mation is an expression not open to similar cavils. I have no ambition to introduce new modes of speech, unless when those already in use are inexact or inapplicable. It is enough if you clearly comprehend the meaning of the teraas I employ. Among the events of inflammation I include only the local changes observed in its course. To those which are constitutional I must afterwards revert. You will recollect that I did allude, in the last lecture, though in a very briet manner, to these local events of inflammation. Their frequency and importance render it necessary that we should consider them somewhat more particularly. One of these events is the simple subsidence or resolution of the inflammation : this may strictly be called a termination also. The congestion of the blood-vessels increases till the blood stagnates in some of the capillary canals towards the centre of the affected part, which is then said to be inffatned; but the disease goes no further ; there is no escape of the blood, nor of any part of the blood, nor of any of the con- stituents of the blood, beyond its natural channels : or, at any rate, there is no sensible evacuation into the inflamed tissue, or next to none. The inflammation begins to recede ; the stagnant blood is again set in motion ; if there have been some slight effusion, it is re-absorbed ; the rapidity of the circulation in the surrounding vessels diminishes ; and the part returns, in all respects, to its former condition and integrity. This may be considered the spontaneous cure of inflammation ; and to this event there seems to be always a natural tendency. It may be promoted, sometimes, by art. When the process of resolution is unusually stidden and rapid, (as it occasion- ally is, the well-marked phenomena of inflammation completelj'- disappearing in a few hours,) it is called by our neighbours, the French, delitescence. And when the symptoms of inflammation thus suddenly desert one part, and show themselves im- mediately afterwards in another (as not unfrequently happens in respect to the joints in acute rheumatism, and between the parotid gland and the testicle or mamma in the mumps), metastasis is said to take place. This transference, as it were, of morbid action from one part to another is a very curious circumstance. It is one which we sometimes endeavour to imitate. We excite inflammation upon the surface, where we know its effects will be of com- paratively little consequence, in the hope of diverting it from some internal organ in which it threatens to work serious or even fatal changes. We follow the same principle perhaps when we apply purgative medicines to the mucous membrane of the aUmentary canal. To denote the mode of cure, by stimulating distant parts, the terms o[ counter-irritation, derivation, and revulsion are employed. Most commonly, even under moderate inflammation, some amount of extravasation takes place into the texture or from the surface of the part. The first effect or event of that kind which we notice, is the pouring out or effusion 01 serous liquid. The liquid is so like the serum of the blood, that it is called serosity or serous liquid ; and there can be no doubt, 1 conceive, that it consists of the serum of the blood, slightly modified perhaps. You will recollect my stating that the swellirtg which accompanies phlegmonous inflammation is not equally firm through- out the wliole extent of the inflamed part ; that it is hard in the centre, softer towards the circumference ; and that in the latter situation it sometimes retains for a few- seconds the impression of one's finger; — pits. Now this results from the effusion of serous fluid into the areolar tissue immediately surrounding the part inflamed : ii is neither more nor less than (edema, — oedema (which may exist aiso quite inde- pendently of inflammation) being a filling or infiltration of the areolar tissue with serous fluid. Anasarca is an example of the same state, on a larger scale. Now anasarca is very constantly produced by some impediment to the passage of the blood along the veins ; the serous portion of the stagnating blood transudes through the coats of the vessels : and I apprehend that the same explanation may be given COAGULABLE LYMPH. J 07 of the less extensive oedema which takes place around a phlegmon ; the blood being stagnant in the neighbouring capillaries. But whatever may be the intimate cause of serous effusion, it is one of the earHest events of inflammation; and in some cases it is its most important event; producing, mechanically, new symptoms, and giving rise to conditions of the most perilous kind. The quantity of serous fluid poured out in a short time is often immense. One of the pleura may be thus filled in a few hours, and the whole of one lung strongly compressed, and the respiratory apparatus reduced to one half of its customary effi- ciency. And if inflammation and effusion should take place on both sides of the chest at once — if double pleurisy should occur, as it sometimes does — the patient must presently perish by apnosa, unless his condition is recognized, and free vent is given to the fluid. More than once or twice have I seen persons snatched from the brink of suffocation by what is called tapping the chest. Fatal coma is no uncom- mon result of the eflfusion of serosity, as an event of inflammation, into the ventricles of the brain. Even in the areolar tissue, where it is properly enough called oedema, a very trifling amount of this serous effusion may be sufficient to destroy life : when, for instance, it takes place into the submucous areolar tissue of the glottis, closing up by its pressure that little chink, the rima gloltidis, and suffocating the patient after another fashion. Here also art may come to the rescue : an urtijidal chink or hole is made for the entrance and exit of air, below that part of the larynx in which the disease is situated, and the patient is deUvered from imminent death. I have had two cases under my own care, and have seen several others, in which life loas so preserved. I allude to such cases now, merely to convince you of the importance of attending to this event of inflammation, and of studying the indications of its existence. Sometimes some of the small vessels give way, and hemorrhage into the part becomes an event of inflammation. Some slight degree of this occurs probably in most cases ; and we frequently find that the colouring matter of the blood is mixed with other effusions, giving to the serous liquid a deep tinge of red. 1 hinted before, that we must not infer inflammation from the presence of serous effusion alone. Serum will exude, I believe, from loaded veins, even after death ; but this never can be much in amount. It is certain that dropsical effusions may be, and very often are, the result of congestion of a purely mechanical kind. A third event of inflammation is the efilision of what is called coagulahle hpnph, which, as I explained to you before, appears to be nothing else than the fibrin sepa- rated from the other constituents of the blood, and concreted. It is poured forth, at first, in a state of solution, or in a soft semi-fluid condition, and mixed with more or less serosity ; but the fluider parts of the effusion are either soon reabsorbed, or soon separate themselves from the fibrin, which becomes firmer, and at length solid. The hard central portion of a phlegmon, in its earliest stages, owes its hardness to the presence of coagulahle lymph in the natural interstices of the inflamed part ; and a similar interstitial deposit of the same substance is common in various parts of the body, as a result or concomitant of inflammation. What is called hepatization of the lung is one instance : the spongy texture of the lung is blocked up and solidified by this lymph. In certain cases of erysipelas, as well as in phlegmonous inflam- mation, the subcutaneous areolar tissue is rendered dense and hard in the same way. The white Opaque spots which are often seen upon the cornea are produced by lymph interposed between the layers of that naturally transparent structure. But the most striking examples of the effusion of coagulahle lymph are to be seen upon the surfaces of inflamed membranes : it forms a web or layer which by decrees assumes, itself, a membranous appearance : and is accordingly called by morbid anatomists a false or an adventitious membrane. Sometimes several layers of this kind are spread over each other, forming adventitious membranes of great thickness. When coagulahle lymph is thus poured out between membranes that are habitually in contact with each other, it often causes them to cohere : just as two leaves of a book may be made to stick together by a layer of paste put between them. Thi.s result is very common indeed with serous membranes, especiai'v the pleurce. the 08 INFLAMMATION. pericard'mr.i, and the peritoneum. Lymph is said also to be poured out, under violent inflammation, from mucous surfaces. In croup, the interior of the trachea is inflamed, and a substance exudes which assumes a membranous form, and adheres more or less firmly to the sides of that tube, or is coughed up in ragged fragments A similar effusion takes place occasionally from the mucous lining of the alimentary canal, and is expelled, with the othe** contents of the bowels, in shreds, or in tubukr portions, which are, in fact, casts of the interior of the gut. I say coagidabh lymph is said to be thus poured out ; but it is more than doubtful whether the false membranes in these cases are really composed of fibrin. Similar films form within the uterus, and are moulded to the exact shape of its cavity, and marked with indentations that correspond to its rugce ; and these membrane-like casts are at length separated and extruded. These last are not very common ; but I show you one which came from the uterus of a young woman who was a patient of mine in the Middlesex Hospital not very long ago. You may see lymph deposited like beads, upon the anterior surface of the iris under inflammation ; or gluing its posterior surface to the crystal- hne lens behind it, and rendering the pupil irregular, and sometimes immovable. The internal surface of the heart, and especially its valves, are often studded with portions of lymph much resembling warts. When the opposite sides of an artery are brought together by a ligature, they inflame, and become united by the same medium. Coagulable lymph is effused, in the course of a few hours, upon the edges of a cut wound ; and they adhere, under favourable circumstances, when placed in mutual apposition. This surgeons call union by the fust intention; and the inflammation which is accompanied by all kinds of exudation of lymph, or fibrin, is called adhesive inflammation ; or the adhesive stage of inflammation. It is seldom that coagulable lymph alone is thus poured out. Sometimes it is tinged with the colouring matter of the blood. Oftener it is mingled with, or at first dissolved in, a large quantity of serous fluid. When this happens in serous bags — as in the pericardium or pleura — the thinner fluid may keep the opposite membranes apart ; and for some time, or entirely, prevent their agglutination. Sometimes the agglutination is partial, and the uniting portions of lymph are stretched out, by the distending effect of the fluid effusion, or by the natural movements of the parts, into strips or bridles of adhesion. 1 must call upon you to notice, in passing, that although this event of inflamma- tion may sometimes perhaps have a detrimental or destructiv^e consequence, yet that in a vast majority of instances it is distinctly a salutary and conservative event. Vision may, no doubt, be destroyed by a plug of lymph which shuts up the pupil of the eye. A portion of intestine may become strangulated by a band of adhesion. Of this, which is a mere accident of the adhesion, I have seen some fatal examples. The closure of the trachea by the membrane of croup is not, in my opinion, a fair case in point. There are, at any rate, but few exceptions to the rule, that the effu- sion of coagulable lymph proves beneficial by preventing some worse event of the inflammation. It is better that inflammation of the areolar tissue should be limited and hemmed in by a barrier of lymph, than that it should extensively diffuse itself. It is better that the bag surrounding the heart, when it happens to be inflamed, should become adherent to that organ, than that the inflammation should run on into suppuration, and fill the pericardium, and oppress the heart, with pus. In the one case life may continue for several years ; in the other it seldom lasts many days. It is clearly more desirable, and more consistent with the safety and comfort of the patient, that his lungs should be fastened to his ribs, than that they should be com- pressed and flattened against his vertebral column. I shall have occasion so fre- quently to speak of this protecting and reparative tendency of adhesive inflammation, that I do not more than point it out to you at present. When lymph has been effused upon an inflamed surface, it very readily becomes vascular and organized. Red streaks begin to be visible in it. These are incipient blood-ves.'^els, which may soon be seen to communicate freely, and to be continuous with the blood-vessels of the inflamed part. The plastic lymph is fashioned into a definite structure, and made a living constituent portion of the body. It is in truth this remarkable plastic property belonging to the effused lymph, tliis aptitude for COAGULABLE LYMPH. 109 Deing organized, which invests the adhesive inflammation Avith its guardian and repa- rative character. None of the other fluids poured out under inflammation are capable of this change. It is in this way that the lips of recent wounds, and the surfaces of inflamed membranes in contact with each other, are permanently stitched together (if I may use so homely a metaphor!, by living vascular threads. By this needle- work of nature parts recently severea from the body may sometimes be replaced ; or even transferred and affixed to other situations, as in the Talicotian operation, whereby a new nose is engrafted in the place of that which had been lost. It is thus that ulcers fill up ; successive layers of lymph exude, and are in succession attached to the ulcerated surface, and incorporated by tliis organizing process, until the breach of texture is repaired. The lymph thus organized comes at last to resem- ble, very exactly, areolar tissue, more or less condensed. The length of time required for the pouring out of coagulable lymph in inflamma- tion — and for its organization after it has been poured out — is variable under differ- ent circumstances. It is often effused very early. Dr. John Thompson found a distinct layer of it covering wounds he had made in an animal, in less than four hours after they were inflicted ; and cases are related, in which vascular organiza- tion of the effused lymph ha^ appeared to have been effected within the space of twenty-four or thirty-six hours. Sometimes, on the other hand, many days seem to elapse before any such organization is observable. When serous fluid and coagulable lymph have been poured out in considerable quantity, and simultaneously, the serous fluid is often rendered turbid by the admix- ture of small portions of lymph, or of albumen, diffused through it ; and flakes of lymph sometimes float in it, or settle, in virtue of their specific gravity, at the lowest part of the cavity containing the effused matters. Several conditions seem necessary to ensure this adliesive form, or adhesive stage of inflammation. The inflammation must reach a certain degree of intensity, or no lymph will be effused ; it must not go beyond a certain degree of intensity, or the next event I have to mention, the formation of pus, will interfere with the adhesive process. We learn also from what takes place in recent wounds, that seclusion from the air, and the absence of all other causes of irritation, are necessary for adhe- sion, or union by the first intention. The formation oi pus — suppuration — is a fourth event of inflammation, to which brief allusion has already been made. Many opinions have been broached respecting the nature of pus, and the manner in which it is formed. I shall not trouble you by discussing, nor even by narrating them, but hmit myself to stating what are the notions held on these points by the most able and the most recent observers. Pus, then, as I told you before, is altered blood. It is an opaque, smooth, yellow ish fluid, of the consistence of cream, and having no smell. I speak now of well- formed, or what is called good, or healthy pus ; what the old writers spoke of as pus laudabih. This has been thought an absurd epithet: but it serves as well as any other to express what was meant, viz., that kind of pus which accompanies benign forms of inflammation, and indicates that all is gomg on regularly, and pro- mises a fortunate ending : pus, in short, the appearance of which was to he com- mended. It is certainly not more absurd than the term healthy pus. This pus laudabile was described as being album, Ixve, et xquale — light-coloured, smooth, and homogeneous. This description of good pus has de^scended from the time of Hippocrates, who says. To hi nvov, a^intov Xtvxov ti hui, xai uuaXov, xai Uiov, xai tubes are kept open and apart by i\\e\Y structure : the stomach and intestines by their con- tents, or by the frequent passage of solids and fluids through them : and therefore (it has been supposed) they have no opporttrnify of adhering. But there can be no doubt that these mucous membranes are but little disposed to throw out true lymph at all : and when their opposite surfaces do grow together, I believe it will almost always be found that some abrasion or ulceration of the mucous surface had previ- ously happened. Inflammation affecting the mucous membranes has sometimes a strong tendency to spread and wander : sometimes, on the contrary, it is strictly confined to a small and definite space. In the former case it commonly restricts itself for a long time, or altogether, to the mucous tissue, leaving the neighbouring tissues untouched. In the latter it is apt to penetrate to the subjacent parts, and to produce obvious and en- during alterations of structure. The membrane becomes faster 3d to the parts which it should, loosely clothe, and not unfrequently it ulcerates or sloughs. The spreading form of inflammation is most often met Avilh in the air-passages. Ulceration and sloughing, and circumscribed inflammation, are more common in the ahmentary canal. There is a remarkable contrast between the serous membranes and the mucous, in respect to pain which attends t/heir inflammation. Very little pain is experienced in many cases, when inflammation affects the mucous lining in any of the three systems, except towards their openings, where the membranes are about to become continuous with the external skin : in the mouth and throat, for example, the pha- rynx, the rectum, the vagina, the extremity of the urethra. And as inflammation of the mucous membranes is attended with less pain, so also it is accompanied by less fever than when the serous membranes are attacked ; and the blood more seldom exhibits the buffy coat. The muscular tissue appears to take on the actions of inflammation ver)'^ reluc- tantly : and its vessels seldom, if ever, pour forth any of the products of inflammation. The chief effect of inflammation upon muscle, is the destruction of its contractile proper- ties. Serum and lymph, and even pus, are sometimes found diffused through mus- cular parts ; bi.it there is reason to believe that these eflusions are rather the consequence of inflammation of the areolar tissue which enters into the composition of the muscle, and ties together its fleshy fibres, than of inflammation of those fibres themselves." I have remarked already that inflammation of an artery presently leads to tho effusion of lymph, and the coagulation of the blood, within the artery. But arteries do not readily inflame, except under mechanical injury ; they do not often suppurate either: and they possess a singular power of resisting mortification. Dr. J. Thomp- son declares that he has seen cases of phlegmonous erysipelas, in which " several inches of the femoral artery were laid completely bare by the gangrene, ulceration and sphacelus of the parts covering it, without its giving way before death." Inflammation of the veins is much more common than that of the arteries : and it is a disease of fearful interest. In some cases it leads to a deposit of fibrin upon the inside of the vessel, "furring it over," as Mr. Hunter says. The blood soon coagulates, and blocks up the inflamed vein, or leaves, perhaps, a narrow passage in its centre. From this mechanical obstruction to the current of the blood new symptoms arise The part from which the venous trunk receives its tributary branches becomes osde- niatous or dropsical. Inflammation of the femoral vein, obliterating its cavity, is the essence of the complaint known to pathologists under the name of phlegmasia INFLAMMATION OF THE BRAIN. 123 dolens : a complaint which majr happen to persons of any age, and of either sex ; but which is most common, in women soon after parturition. This, which may be considered the adhesive form of phlebitis, is also its most • innocent form. Too frequently the inflammation runs into suppuration : and then it proves a most terrible and almost hopeless disorder. The vein remains pervious: pus, of an unwholesome and poisonous qualitj^ — or some morbid product of the in- flammation — is carried into the blood ; which thus scatters, in its course, the seeds of inflammation, and determines the rapid formation of purulent collections, in various and distant parts of the body, and especially in the lungs, the liver and the larger joints. Great constitutional disturbance ensues, and fever of a typhoid type is often established. To this, the destructive form of the disease, parturient Avomen are also peculiarly liable. Phlebitis of ^ the uterine veins constitutes the source of the most dangerous and deadly varieties of puerperal fever. It is the same disease which gives to a vast majority of those surgical operations that are followed by death, their fatal character. We hear continually of inflammation of the bram ; but what is so called is, most commonly, inflammation of the membranes which invest the brain. Inflammation of the cerebral substance itself is, however, not very uncommon ; but it is more fre- quently the result of injury than of spontaneous disease, and it is usually confined to a limited portion of the brain. Softening and suppuration are its ordinary events. Sometimes pus is met with, occupying a distinctly circumscribed space ; the pus is collected into an abscess. Sometimes, on the other hand, it lies loose, as it were, and surrounded by broken-down cerebral matter, or it is infiltrated into the cerebral pulp. Around the softened portions the inflamed substance of the brain is more dense and firm, sometimes, than is natural. Whether this be owing to the presence of coagulable lymph, has not (so far as I know) been clearly ascertained. Mortifi- cation must be very rare in the nervous substance. Dr. Bailhe has described it as occurring after violent injury. Once or twice in my Hfe, portions of brain have been shown to me, protruding through an aperture in the skull, dead, of a dark colour, and having an offensive smell. Excepting in these cases of hernia cerebri, I have never seen sphacelus of the brain from any cause. Perhaps, however, I am incorrect in saying this. I formerly told you that portions of the brain often become soft and diffluent, when there has been no inflammation : but simply from atrophy, depending on a diseased state of the nutrient arteries of the brain. Now some persons call this, mortification of the cerebral substance. They consider it quite analogous to the gangrena senilis, which results from a similar cause, although it happens in another part of the body. The nature of the change, they say, is the same, although the physical cha- racters of it differ. If this be so, I have seen gangrene of the brain some scores of times ; but still I should be able to declare, that with, perhaps, the exception already mentioned, I have never seen unequivocal mortification of the cerebral substance as the result of injlammation : which is what we have now been considering. This concludes, gentlemen, what I have to say concerning the phenomena of common inflammation, as they are perpetually witnessed in the various textures of the body. 1 have not, indeed, gone through aU the tissues ; I have said nothing of the peculiar effects of inflammation in cartilages, for example, and in bones ; but I have glanced at all those tissues in the inflammation of which the physician is chiefly concerned. Upon such points as I have purposely omitted, you will be amply instructed by mv colleaa-iie. the professor of surgery. 124 INFLAMMATION. LECTURE XII. Varieties of Injlammation: Acute and Chronic; Latent; Specific. Scrofulous Inflammation. Tubercles. Relative frequency of Scrofulous Disease in liifjer- ent Organs. Signs of the Strumous Diathesis. We have now, gentlemen, considered the phenomena of inflammation, local and general ; its symptoms and its events ; and the intimation of those events which is aflx)rded by the state of the system at large ; and we have surveyed the principal tissues of the body, and observed the modifications and peculiarities to which the process of inflammation is liable, according as it is situated in the one or the other of those tissues. There are still some varieties of inflammation ; and some epithets applied to inflammation ; which require to be explained. Acute, and chronic, inflammation : these are words perpetually in our mouths. I have frequently employed them already. What do they mean ? Is acute inflam- mation difffc>rent from chronic in kind? No: they differ only in degree. When the disease runs its course rapidly, and is attended with much general as well as local disturbance, it is said to be acute. When, on the other hand, the local and constitutional symptoms are less violent, and the inflammation runs a longer course, its phenomena following each other in slower succession, it is said to be chro- nic. The process is the same, but its features are less strongly expressed. The dis- ease passes through similar stages in both cases, but it travels at a different pace. The characters, then, of acute inflammation are intensity of symptoms and rapidity of progress : and the characters of chronic inflammation are mildness of symptoms and slowness of progress. Inflammation can scarcely be very violent, and at the same time of very long duration. When violent it has been likened (by Mr. Law- rence, Avhose language I have here adopted) to a blazing fire, which soon burns itself out. It may, however, be mild in its symptoms, and yet quickly over. The two terms acute and chronic are not directly opposed to each other : acute has more rela- tion to the intensity, chronic to the duration of the disease ; and some term is wanted — althoueh it is hardly worth seeking for — to denote such a degree of inflammation as exists in a pimple : which is neither severe nor long-continued. Now, in respect to intensity of duration, there are innumerable shades of difl^er- ence in difitrent cases of inflammation; and the same difficulty occurs here which always occurs when general terms are employed to express mere differences of degree. We feel no uncertainty or hesitation about those cases which occupy the two extremes of the scale ; but with regard to those which lie in the middle we are often at a loss. To meet this difficulty some pathologists have invented a third epi- thet, viz., sub-acute, intending to designate thereby cases which hold an equivocal rank ; which are neither decidedly acute nor plainly chronic ; in which the inflam- mation may run a brief course, and be attended with a certain degree of fever; but attains no great intensity, works no profound changes, and does not require very tmergetic remedies to control it. You must not suppose that, because chronic inflammation is attended with less tumult and disturbance, it is necessarily on that account less dangerous or less de- structive than acute. The latter is commonly more obedient to the influence of remedies than the former: it is usually soon brought to an end: whereas chronic inflammation is often obstinate and abiding, and leads to very serious changes in the part upon which it fastens. Speaking, generally, it tends to thicken and indurate when it is situated in the interior of organs, and to the effusion of pus when it affects membranes, or surfaces. It is more common in weakly and debilitated persons than .n others ; but you must not forget that such persons are also very liable to acute ent. Instead of being kept in solitary confinement in a coldish cell, and on th^■• 136 INFLAMMATION. prison diet, they were permitted to work, for several hours daily, in each others' company in the garden of the establishment. Some porter was at the same time given them, and their allowance of meat was increased. The improvement in their condition was rapid and striking. Here we have the disorder germinating under one state of external circumstances, and checked immediately under the opposite state. If you consider the way of life of the children of the poorer classes in this me- tropolis, and in our large manufacturing towns, you will find that 'they are much exposed (though in a less degree) to the same injurious influences, the combination of which appears to generate tubercles in the rabbit. They live, for the most part, in an atmosphere made stagnant by narrow streets ; and in small, crowded, ill-ven- tilated and dark rooms in those narrow streets ; the stagnant atmosphere is contami- nated in a thousand ways ; they are very insufficiently protected from transitions of temperature, against cold and wet, by their clothing ; they are commonly ill-fed — their diet being frequently scanty, and generally of a kind quite unsuited to their growing years. We need not be surprised, therefore, at the ravages which scrofula, in its manifold shapes, makes among the children of the poor in large and populous towns. If ever scrofula be generated, in this country, independently of any heredi- tary strumous taint in the constitution, it is in them. But in most cases I believe it is the latent disposition that is called into action. Moderate exercise, in pure air, and in the open daylight, with suitable nourishment, sufficient clothing, and attention to the state of the bowels : these circumstances comprise nearly all that we can attempt, in a given chmate, towards preventing the development of struma : and from each, and all of them many of these poor children are habitually debarred. LECTURE XIII. Cancel ; its Specks or Varieties. Scirrhus; Encephaloid Cancer ; Colloid Cancer Its mode of Groicth and Dissemination. Habitudes of the several Varieties. Treatment of Inflammation. Antiphlogistic Regimen. Blood-letting. I HAVE more than once coupled cancer and tubercle in the same sentence. Though very different in many respects, they are alike in their intractable cha- racter and destructive tendencies. Of the two, cancer, while it is happily much the more rare, is also much the more painful, loathsome, and hideous in its consequences. It is to cancerous diseases that the epithet malignant especially belongs. Not re- sulting from any change in the natural textures of the body, but constituting an addition to them, and therefore assuming, usually, the shape of tumours, they are commonly and correctly spoken of as cancerous grotvihs. But there are other growths Avhich, by comparison, are innocent ; which do not imply any necessary destruction of contiguous parts, nor any, inevitable danger to life, nor even any marked deterioration of the general health. Such are certain fatty tumours, and fibrous tumours, and osseous tumours. All these last, as their names denote, re- semble in their sensible qualities some of the healthy and natural textures. They have accordingly been styled analogous, or homologous growths; while cancer and tubercle, which find no counterparts in the sound body, are said to be hetero- logous. Some varieties of cancer are, however, very similar in outward appearance to^he substance of the brain; and microscopic observers say that in their minute and original structure there is no perceptible distinction between the most innocent and the most malignant growths ; nay, that both agree in their primary corpuscular elements with the healthy tissues of animals, and even of plants. [This statement is not perfectly accurate. The microscope has not, it is true, thrown much IS^ht upon the nature and causes of morbid growths; it has, however, shown that in many CANCER. 137 of the particulars of their intimate structure, they not only differ from the healthy tissues of the body, but that they differ in this respect from each other. That such is the case, is rendered evident by the result of all the more recent researches into the intimate structure of cancerous formations. By Miiller and other pathologists, cancerous formations have been arranged in two great families or groups — the encepkaloid and the scirrhous. — Of the first there are three sub- divisions. 1. Medullary Carcinoma; in which there is a predominance in the inedullary mass, of round globules over loose fibrous tissue. The globules are of various sizes; but the smallest are la.^er than pus-corpuscules. Each contains a granular substance or nucleus within. They are very similar, in many respects, to those of common cancer, and of reticulated car- cinoma or scirrhus. 2. Medullary Carcinoma, consisting of pale, elliptic, non-elongated corpuscles, and of a funda- mental cerebrilorm mass. These corpuscles are usually twice or three times as large as the globules of the blood. There is never any appearance of fibres proceeding from their sur- face, and they rarely exhibit any traces of nuclei within them. 3. Medullary Carcinoma, •with Jjbrated or punform corpuscles. This species of encephaloid structure has, at times, on laceration, a sort of fibrous aspect, when the puriform corpuscles are arranged in a somewhat determinate direction; according to which the morbid mass will present a radiated or a tufted appearance. In many cases their directions are so various that the lacerated surface exhibits no traces of fibres anywhere. The puriform corpuscles are sometimes nucleated, at others they contain granular points, but without distinct nuclei. They are elongated, on one or two sides, into fibres of different lengths. They may be con- sidered as cells that are arrested at the period of transition from the cellular to the fibrous condition. The three forms of disease now described, may, most probably, be regarded as so many degrees or stages in the development of the same tissue; these successive stages being cha- racterized, 1, by rounded nucleated globules ; 2, by elongated oviform globules, which are eitner non-nucleated or indistinctly so ; and 3, by puriform globules. These several kinds of globules may be regarded as so many successive epochs of evolu- tion through which a cell must pass before it can become a. fibre. Thus we find, it is true, tliat in an encephaloid mass there is the same transformation of the primitive elements, as occurs in many normal tissues — with this difference only, that the process of evolution is not complete — being arrested before the fibrin is perfectly formed. The essential element of an encephaloid tumour is the presence of cells. In some cases die entire mass is composed of them, placed one alongside of the other, but without hav- ing any perceptible bond of union, while in others there is a network of fibrous or cellular tissue interposed between the cells. When the fibrous tissue prevails, the encephaloid then approaches in character to the scirrhous structure. In the latter the existence of the two elements, cells and fibres, is always more distinctly marked than in the former. The fibres are often quite perceptible to the naked eye. Sometimes they are lengthened, and run parallel to each other ; at others, they form rounded capsules, within which the globules are contained. As in the case of the newly formed fibres of the cellular tissue, so those of a scirrhous formation are destroyed by acetic acid, leaving nuclei or nucleated fibres behind. The fibres sometimes exhibit, at different points, a sort of varicose enlargement, within each of which a nucleus is found. This appearance is often observed in fibrous tumours — no« genuine scirrhus — of the uterus and other parts. In the reticular carcinoma of Miiller, the white network which encloses the scirrhous glo- bules in its meshes, is formed of round, opaque granulations, three or four times as large as the blood globules ; they are, occasionally, agglomerated into roundetl masses. The genuine scirrhous tissue, of a pale grayish colour, is composed of globules that, on the whole, resem ble those of the first stage of an encephaloid formation. These globules are either round or somewhat oval ; along with them, according to Vogel, we find free nuclei with their nucleoli. From a variety of observations, it may be reasonably concluded that the cells of scirrhus are formed around the nuclei of which M. Vogel speaks ; their contents are at first granular and almost opaque. When the process of softening commences, the granulations disapjpear, the globules become transparent, and within them are formed new cells, which at first are few in number, and gradually multiply, until they entirely fill the parent cell. M. Valentin, who, in part at least, admits this account of the progress of the cell, declares, that the parent cells eventually burst and discharge their cellules ; we may thus account for the presenca of young free cells in scirrhous formations that have become softened. The inter-cellular substance seems to undergo certain modifications corresponding with the evolution of the cells; the granulations or granular points which it often contains, usually disappear, and it becomes limpid, while, at the same time, the space which it occu- pies is diminished by the enhargement and multiplication of the cells. The fibrous network does not appear to follow, in its alterations, the development of the cells: it may remain firm and resisting while the cells are far advanced in their evoluUon m3 138 INFLAMMA nON. Even when a scirrhous tumour has become completely softened, this tissue sometimes foims shreds that retain their original character. In alveolar cancer, the basis of the morbid tissue consists of white fibres and lamellcB, which cross and intercrois with each other, containing, between the meshes thus formed, limpid cells, either closed or communicating with each other, of various sizes, from that of a grain of sand to that of a large pea, and filled with a transparent, gelatinous substance. In this substance there are cells, wliich contain other cells more minute. The smallest of tliese cells exhibit, at one point of their parietes, a distinct dark yellowish nucleus, and sometimes, also, many free and unattached granules floating within them. . To this species Miiller refers the gelatiniform and areolar cancers of Laennec and Cruveilhiir. The cells of diis species of the disease appear to be only an advanced or more mature degree of the cells of scirrhus. — C] This very agreement, if it really be so complete, shows that in classifying morbid growtk« we must reject the aid of the microscope, and attend to their grosser and more palpable features. And, inasmuch as cancerous formations have, by some pathologists, been ascribed (very erroneously, in my opinion) to injiammulion as their cause, I shall scarcely be going out of my way if I state here some of the broad facts which have been ascertained upon this very interesting subject. Cancer, or carcinoma, considered as a genus of disease, comprehends two or three species, which present among themselves very striking differences, and of which the varieties have received a puzzling multiplicity of names ; scirrhus, stone cancer, medullary sarcoma, encephaloid or cerebriform disease, soft cancer, fungus hcema- todcs, colloid or gum cancer, and several more. The simplest division, founded upon the consistence of the morbid growth, is into hard and soft cancer. But the most modern and scientific system recognizes three species, viz., scirrhus ; encepha^ loid, or brain-like cancer ; and colloid, or gum-like cancer. The physical characters of these three species offer strong points, not merely of difference, but even of contrast. Scirrhus, as that word implies, is remarkable in its early stages, for its hardness. It is as firm as cartilage, and creaks when divided by a sharp knife." The surfaces exposed by its division present a glistening, satiny appearance, and a white, or gray, or bluish-white colour. Athwart this grayish and semi-transparent substance run opaque intersecting bands, having a fibrous aspect. By strong pressure a thin juice may be made to ooze from a slice of the scirrhous tumour. Encephaloid cancer is also well named. It is composed, in great measure, of a soft, white, opaque pulpy substance, very closely resembling, both in colour and in consistence, that of the healthy brain. This cerebriform pulp is traversed and cir- cumscribed by fi-brous septa, w^iich are sometimes extremely thin and dehcate. In both these species of cancerous growth, therefore, there is a contained and a containing element. The same feature is still more distinctly marked in the third species, the colloid cancer, which exhibits the appearance of small portions of a greenish-yellow trans- parent gum, or jelly, arranged in regular cells. Hence it is sometimes denominated alveolar cancer. You niay ask upon what principle structures so dissimilar in their physical ap- pearance have been assigned to the same genus 1 Why, for these reasons. They are all strictly destructive or mahgnant forms of disease. Although in any shape they are of somewhat rare occurrence, yet when they do occur, two, or all three of the species are often found to coexist in different organs of the same individual ; nay, in contiguous parts of the same organ. ^Nlore than this : if a tumour consisting of one species be amputated, and a fresh growth springs (as too often it does) from the same spot, this secondary growth is frequently of another species. There can be no doubt that all are connected by some very intimate bond of union; and the facts I have 'ust stated suggest the question, whether instead of being different spe- cies of the same genus, they ought not rather to be regarded as mere varieties of tht same species. Of all three it has been ascertained, by much and fatal experience, that occurnng m any one part of the body they are prone to multiply in various other parts ; that •hey are commonly attended, during some part at least of their progress, with very CANCER. 139 gew re pain ; that they are incontroUable by any known remedy ; and tend always, sometimes slowly, sometimes with frightful rapidity, to augment in bulk; eating away contiguous parts by their invasion and pressure ; breaking out, when near the surface, into foul and repulsive ulceration; producing often the most ghastly disfi- gurement ; and ultimately destroying life. Sometimes vital parts are slowly disor- ganized by the corroding extension of these tumours; sometimes large blood-vessels are laid open, and death is suddenly brought about by hemorrhage ; and sometimes the powers of hfe sink gradually under the wearing influence of the disease, and that degeneracy of the Wood which it causes or accompanies. There is scarcely an organ or a texture of the body which is not liable to be attacked by this terrible foe : the brain, the eye, the lip and face, the lungs, the stomach, the intestines, the liver, the kidneys, the breast, the womb, the testicle, the bones. But some parts are more often the seat of cancer than others. Among these may be reckoned the female mamma, the uterus, the stomach, the liver, and the testicle. The mode in which cancer originates is uncertain ; the modes in which it spreads and multiplies are better understood. An individual tumour may enlarge by ihe progressive insinuation of the cancerous matter into the interstices of the neighbour- ing tissues, which, thus fastening upon, it consolidates. The disease may be com- municated, by imbibition, from one organ to another which is in mere contact^vith it. But how does it come to occupy at the same time, or in quick succession, several separate and distant organs ? This is a question of the greatest interest and im- portance, and it admits of a distinct reply. Cancer often makes its appearance in a single spot on the surface of the body ; in the female breast, for instance. We see and feel it there while it is yet small, and while the general health of the patient seems to be otherwise perfect. By degrees the tumour increases, and at length it softens in some places ; the glands of the axilla become swollen, hard, painful, and filled sometimes with cancerous matter ; the tumour breaks perhaps through the skin, and presents the shocking spectacle of "open cancer ;" the general health gives way, and the skin assumes a straw-coloured tint. During this process, unless the patient dies prematurely, or the original disease is removed by a surgical operation, cancerous tumours form in one or in several of the internal organs, and give notice of their presence by appropriate symptoms. There is an original morbid growth, and there are subsequent morbid growths ; a prin:iary tumour, and secondary tumours ; and the latter are caused by the former. This is a most important fact, if indeed it be true. Now Miiller has discovered, by means of the microscope, and the discovery has been confirmed by other observers, that the contained matter, in the several species or varieties of cancer, consists of very minute cells, with nuclei attached to their w^Us, and of granules still more minute, which are supposed to be the rudiments of new cells. It is (apparently) by the amplification of these granules into cells, and by the development of the nuclei into other cells, and by the growth and evolution of young cells, which in some instances are included generation after generation within parent cells, that the original tumours enlarge and extend themselves ; and it IS by the transference of certain of these cells and granules from the original tumour that a crop of secondary tumours is sown in remote parts of the body. The cells, and probably the granules also, are endowed with the power of self-increase and propagation, whenever they find a fitting nidus. Possessing, like the seeds of plants, an inherent vitality of their own, they merely require, in order to germinate, to be placed in contact with some living tissue, wherewith they may form vascular con- nections, and wherefrom they may draw the materials of their nourishment. Co- hering together, for the most part, with but httle force, they are easily detached from the parent mass. It is matter of fact that the secondary tumours form most surely and most rapidly when the primary tumour is of a soft kind ; and that when they succeed to scirrhus, it is after the process of softening has commenced in that origin- ally hard structure. These germs — which present, in their forms and mode of generation, striking analogies to those of some of the lower animals, as well as to tlio«e of plants — these, germs are probably carried sometimes through the lymphatic 140 INFLAMMATION. vessels to absorbent glands in the vicinity of the primary growth; hut tnere can scarcely be a doubt that the blood is the main channel by which the seeds of this dreadful malady are conveyed from its first to its subsequent sites, and thence per- haps, if life continues long enough, to tertiary locations. The gross matter of cancer is often to be found in the veins t^hat proceed from the primary tumour — nay, in large venous trunks at a distance : so that some distinguished pathologists have too hastily conjectured that it may originate in the veins. You are probably aware that foreign substances, circulating with the blood, stop or are entangled more often in some organs than in others. Minute globules of mercury, where that metal has been introduced into the veins, are found strewed through the substance of the lungs, and of the liver. Pus, received into the blood in phlebitis, is arrested, and forms scat- tered points of inflammation and abscess, in the same organs ; and it is in the liver and the lungs that separate tumours of secondary cancer are most commonly met with. If this be the true theory of secondary cancerous formations, I need scarcely point out to you the urgent importance of the rule which prescribes to the surgeon the most complete extirpation of the primary tumour, at the earliest possible period of its existence. Of these primary formations the origin is involved in much obscurity. It seems, however (and this, after what has just been stated, you might expect) that the germs of the disease are capable of being transferred from one human being to another ; and even to an animal of a different species. Langenbeck injected cancerous matter, just taken from a living body, into the veins of a dog. After some weeks the dog began to pine away, and was then killed, and cancerous growths were found in its lungs. Several instances have occurred — I have myself known of two — of cancer of the penis ,in men whose wives laboured under cancer of the uterus. Here it is presumable that the cancerous germs, received upon a delicate and vascular surface, and suffered perhaps to lodge there through neglect of cleanliness, might fasten upon the part, take root there as it were, and grow. One very curious circumstance con nected with this subject is, that the frequent contact of common soot seems to have the power of producing cancer. There is a form of carcinoma, affecting chiefly the sciotum, and familiar to surgeons as the chimney-sweeper's cancer. A case is recorded of cancer of the same variety occurring in the right hand of a gardener, who for years had been in the habit of sprinkling soot over his flower-beds with his hands. There are not wanting, then, plausible grounds for the hypothesis, that the seeds of cancer may be introduced, in some way which eludes observation, from without that cancerous growths are strictly parasitic, and independent of the body, excepting so far as they derive their pabulum from its juices. The difficulties involved in this supposition are not greater (as we shall see hereafter) than those which hang over the source and origin of certain entozoa, whereby the body is liable to be infested. But whether this hypothesis be true, or whether the cancer cells and germs are merely morbid elements of the native tissues of the body, developed by some perverted energy of the formative process, remains yet to be determined. From the tables contained in the Reports of the Registrar-General, it would appear that women are more subject to this fearful disorder than men, in the large ratio of five to two. It fixes chiefly upon the female organs of reproduction ; the mammce and the uterus. The mortality from cancer, estimated with due reference to the whole number of persons existing at different ages, increases steadily as hfe advances. There are still some general habitudes of the different varieties of cancer, with which I should wish you to be acquainted. The secondary formations are most commonly of the encephaloid kind, whatever the primary form may have been. Encephaloid cancer, as compared with scirrhus, is abundantly furnished with blood-vessels ; and upon this difference in their degree of vascularity,' other reniark- able differences between the two varieties seem to depend. First, encephaloid tumours generally augment w'ith much greater rapidity, and attain a much larger size, than scirrhous tumours. Occasionally their magnitude comes to be enormous ENCEPHALOID CANCER. 141 Again, cerebriform growths seldom happen singly, but occupy several organs of the body at once. Scirrhus, increasing slowly, occurs also in fewer sites ; it is some- times even solitary. More tissues, too, appear to be obnoxious to the soft than to the hard variety. Now (as Dr. William Budd has well remarked) a large apparatus of blood-vessels, bringing a proportionally plentiful supply of nourishment to the parasitic tumour, accounts sufficiently for its rank and rapid growth ; and the same condition, espe- cially when conjoined with softness of the parent mass, affords obvious facilities foi the hberal dissemination of its germs through numerous returning channels. In fact, the soft varieties alone have, as yet, been found in the veins. The same multitude of its blood-vessels, and slender cohesion of its component parts, serve to explain another peculiarity of the cerebriform species. Intermixed with, or diffused through, the brain-hke substance, there is often to be seen a quan- tity of extravasated blood ; and when the disease breaks out into ulceration, red, ragged, and bleeding growths, of fungous aspect, sprout rapidly from the cpen sur- face. To these accidents of cancer the term fungus haematodes is to be traced. We do not find scirrhus to be the seat of similar interstitial hemorrhages. Encephaloid cancer has less tendency to contract adhesions with contiguous partj than scirrhus has. Of the alveolar variety, which has been more lately discriminated, from the others, and less studied, less is known. It occurs principally in the abdomen, affecting the pyloric orifice of the stomach, and the omentum. It appears also occasionally in . the bones, and the breast and testicle. Although sometimes combined with the two other species in the same person, it is often alone, and hmited. to a single organ. I believe it has not been met with except in adults. • For more minute information upon this subject, so interesting and important both in its pathological relations and in its practical bearings, I must refer you to a very able and elaborate article on cancer, in the Cyclopxdia of Surgery, by Professor Walshe, and to a shorter but admirable essay on the same topic, by Dr. Wilham Budd, published in the Lancet. From these sources has been derived much of what I have now been stating. [We may also refer the reader to the full and excel- lent paper of Dr. Carswell, on Scirrhus, in the Cyclopaedia of Practical Medi^ cine. — C.I s Returning to our current the^me, I proceed, in the next place, to speak, in a gene- ral manner, of the measures to be adopted when we are called upon to administer to the relief of a person labouring under inflammation : of what is sometimes called the cure; but, more correctly, of the treatment of inflammation. In describing the phenomena and progress of inflammation, I took external inflam- mation as a type, and I shall keep that type principally in view in what 1 have to say respecting its treatment : making, however, such reference to the inflammation of internal parts as the subject will permit. You will bear in mind that my design at present is merely to explain the principles of treatment, generally : I shall point out, by and by, the application of those principles, and the modifications they may require, in respect to particular cases. I speak also, now, of common inflammation, occurring in a previously healthy person. There are many observations that con- cern all inflammations alike, whether external or internal, and by despatching these in the outset, I hope to avoid much repetition hereafter. In all cases of inflammation, our first object is, if possible, to obtain resolution: and if that be not possible, we next aim at securing that event of inflammation which would be the most fortunate in the particular case before us. In external inflammations good suppuration will generally, next to resolution, be the most desirable event : in internal inflammations it will be sometimes suppuration, some- times adhesion. It is necessary to keep in view the distinction between the treatment proper for the inflammation itself, and the treatment that may be required for the effects of the inflammation. At present we are concerned only with the inflammation itself. I stated to you in a former lecture, that a knowledge of the cause of a disease 142 TREATMENT OF INFLAMMATION. might help us in its treatment. Knowing the cause, our first care must be to remove it, if we can. In the case formerly supposed, we should extract from the inflamed arm the fragment of glass. If the inflammation has been excited by the extremity of di fractured bone, of a broken rib, for example, we take measures for bringing the separated bones into their proper places, and for keeping them there : if the mere displacement of a part has occasioned the inflam.mation, as the disloca- tion of a joint, the protrusion of the bowel in hernia, the first thing to be attended to is the restoration of the part to its natural situation : if there be any chemical source of irritation (in the stomach, for instance, threatening or producing inflammation there,) we eject, neutralize, or dilute it. I know of but one exception to this rule, and it belongs to surgery: to wif, when a bullet or splinter is so lodged in the interior of the bod 3% that its extraction would be more hurtful or hazardous than its remaining where it is. A knowledge of the cause of an inflammator)^ disease may help us in another way. We do not treat a joint that is inflamed in consequence of external violence as we should treat the same joint when inflamed in rheumatism. But it is very seldom, except when the inflammation is external, that we can accomplish the removal of its cause. In most internal cases, either it cajinot be got at, or it has already ceased to be applied; as when the inflammation has been excited by exposure to cold. But it may be possible, and it is of the utmost importance M'hen possible, to prevent any ?'e-application or repetition of the same cause, which would be L'kelyto frustrate our endeavours to bring about resolution. Next in importance to the removal and avoidance of the exciting cause, must be placed in most instances, the observance of what is called the antiphlogistic regi- men. This may seem an. old-fashioned, phrase, but it is a very convenient one ; being a brief form of expressing the sum of several distinct provisions for the wel- fare of the sick, and for the conduct of their attendants. The word antiphlogistic is derived, indeed, from an obsolete theory ; but we retain it as a useful arbitrary term, without reference to its etymology^ or to its original meaning. The object of the antiphlogistic regimen is to put and keep the patient in that state which is most favourable for the spontaneous subsidence of the disease, or for the sanative influence of remedies. This regimen consists in the avoidance of every stimulus that can be avoided, whether external or internal. Common sense will suggest to you the details. It implies a total abstinence from animal food, and from strong drink of all kinds. It prescribes the exclusion of all that might excite or exercise the mind, or produce a strong impression upon the senses : noise ; bright light ; great heat or cold. The patient should be kept in a temperature of about G2^, and in a well-ventilated apartment. He must not be allowed to converse, nor to attend to matters of business ; unless, indeed, his mind happens to be disturbed and anxious about some point which one short interview with a friend may effectually settle. All causes of strong emotion, and mental agitation, should be strictly guarded against. Whatever tends to quicken the circulation is to be shunned ; and therefore not only those influences which operate through the nervous system, but also all needless bodily effort and exertion, must be prohibited. The patient (in the serious cases I am now contemplating) must remain in bed : and in a position which facili- tates, or at least does not impede, the free return of blood by the veins from the suf- fering organ. If the inflammation is seated in or about the head, that part should be elevated by pillows. If one of the lower extremities is affected, even when the disease is not so intense as to require confinement to bed, the lijnb must be sustained horizontally, or be even still more raised up. On the same principle it is that we suspend an inflamed hand or fore-arm in a sling. In some cases of internal inflam- mation — in pleurisy, for example — the patient will choose his own position. He is admonished, by the pain and distress they occasion, that certain postures would be hurtful or dangerous, and he carefully avoids them. We often derive much informa- tion from this instinctive caution on the part of our patient. The function of the organ inflamed should also be spared its exercise, whenever and in as great a degree as that can be done. As you would not allow a patient to Tiove an inflamed joint, so you must not permit him to use an inflamed eye ; to ANTIPHLOGISTIC REGIMEN. 143 sp^ak more than may be absolutely necessary with inflamed lungs ; to exert by thinking, and by attention to external excitements, an inflamed brain. This last rule IS essential, even when the brain is not the seat of the inflammation : it is to be observed in all febrile disorders. The adoption of this antiphlogistic regimen is not, indeed, necessary, nor even proper, in all cases and stages of inflammation. The iaiflammation may be so slight as not to require it ; particularly in external cases, of which the causes and the extent are known ; as slight contusions, trifling wounds, and some kinds of eruption. But this exception must always be applied with great caution to cases of internal inflam- mation, about the causes and extent, and tendencies of which we may be less sure. In chronic forms of inflammation again, as in scrofulous inflammation of the lympha- tic glands, or of the eyes, attended with but little pain or heat, the antiphlogistic regi- men would often fail to be beneficial : the state of the general system being such as to require support and strengthening measures, more than the local symptoms call for an opposite treatment. So also when suppuration or gangrene have supervened, the antiphlogistic regimen must generally be modified, or abandoned. But in the outset of all cases of serious inflammation, when the strength is entire, and the inflammation intense enough to produce pyrexia, all the particulars of the antiphlogistic regimen may require to be observed. Of all the direct remedies of inflammation, the abstraction of blood, bleeding, or hlooA-letting, as it is called, is by much the most effectual and important. We should, I think, be prepared to expect this, prior to any experience of it. Blood being the natural stimulus of the heart, we should deem it probable that the removal of a portion of that fluid would diminish the force with which the heart contracts : and as an inflamed part contains a preternatural quantity of blood, and as (with the exception of resolution and mortification, which really are terminations of inflamma- tion — as with these exceptions) all the events of inflammation depend upon the effu- sion of certain parts of the blood from its containing blood-vessels, we should be inclined, « priori, to believe that the amount of those effusions would be checked and limited by lessening the supply of blood to the inflamed organ, as well as by abating the force with Avhich the blood reaches it. And we find it in fact to be so. The results of experience confirm, in this matter, the suggestions of our reason. Blood forms the pabulum of the whole process. "If," (says Mr. Lawrence,) "we may be allowed to use figurative language, the obvious increase of heat in the part is analo- gous to that of fire ; and blood is the fuel by which the flame is kept up : in fact, if we could completely take away its blood from the part, we should be able entirely to control or arrest the increased action," But it is not every case of inflammation that requires or warrants the abstraction of blood : and when blood-letting is requisite, the mode of taking away the blood, the proper quantity to be taken, and the propriety of repeating the bleeding, all vary greatly in difl!erent cases. It is obviously of vast importance that you should learn so to use this valuable remedy as not to abuse it. Its power is great for evil as well as for good ; and in rash or inexperienced hands it too often becomes an instrument of flital mischief. There are, as you are all aware, several modes of abstracting blood : phlebotomy, arteriotomy, scarification, cupping (which is merely a variety of scarification), the application of leeches. Bleeding performed in'either of the first two of these me- thods is called general bleeding. The rest are, in most instances, topical or local: but they are not merely topical in all cases. The main object of general bleeding is to diminish the whole quantity of blood in the system, and thus to lessen the force of the heart's action. The object of local bleeding is, in most instances, that of emp tying the gorged and loaded capillaries of the inflamed part. Sometimes the blood is thus taken directly from the turgid vessels themselves ; more often, I fancy, topi- cal blood-letting produces its efTect by diverting the flow of blood from the affected part, and giving it a new direction, and so indirectly relieving the inflammatory con- gestion. General bleeding has also incidentally a similar tendency to deplete the vessels concerned in the diseased process : and, on the other hand, a dexterous cup- per, under favourable circumstances, will take away blood from a part as copiously 144 INFLAMMATION. and rapidly as if it were made to flow from an opened vein : and then the eflee.. upon the system will be alike in the one case and in the other. The same rnay be said of leeches, when they are applied in the enormous numbers which our neighbours, the French, are fond of using. In whatever way the blood is drawn, Avhether from a vein or from an artery, or by the pressure of a cupping-glass around a surface previously scarified, or by the suction of leeches, the general effect upon the system will be in proportion to the quantity of blood abstracted in a given time. The most convenient and effectual mode of general bleeding, upon the whole, is certainly the common one, from the veins at the bend of the arm. But sometimes those veins are small or deep, especially in fat people ; and we fail in our efforts to get the blood to flow from them in a full stream : and then we may open some other vein or an artery, or call in the cupper to our assistance, or cover the neighbouring ■surface with leeches ; according to the situation of the part inflamed, and other cir- cumstances. Let us now briefly consider what the indications are by which we judge of the "Expediency of taking away blood. We are guided very much by the degree of pyrexia ; by the quality of the pulse ; by the importance of the organ affected ; by the intensity of the inflammation, in what manner soever that may be measured ; by the period or stage of the disease ; by the age, and sex, and general condition of the patient; and frequently also by the ordinary character and course of the disease, when inflammation happens to be, or to accompany, an epidemic disorder. It is not one of these circumstances alone, but several of them, that we have to take into the account, in most cases : and what I have now to say in reference to them must needs be very general. The presence of pyrexia, especially when the febrile disturbance is well marked, admonishes us, indeed, to search after other indications of the propriety of blood- letting, and confirms them if they are found ; but is not, of itself, a sufficient reason for resorting to that remedy. There may be high febrile symptoms without any inflammation at all ; as in the hot stage of an ague fit : and a smart attack of fever may spnng out of local inflammation, and yet the known course of the disease, or the nature of the part affected, may render the abstraction of blood unnecessary, and therefore improper. Our judgment is more often determined by the quality of the pulse, although we are by no means to be wholly directed by this. The quality of the pulse which — other things being the same — bespeak the necessity of blood-letting, is hardness. I described this quality to you in a former lecture : it may coexist with a large or a small, a slow or a frequent pulse. Most commonly (and "yet the exceptions are nu- merous) in acute inflammations the pulse is full and frequent as well as hard. The hardness is ascertained and measured by the resistance which the throb of the artery makes to the pressure of your finger. The pulse is sometimes said to be incom- pressible ; which means that, although you apply your finger with considerable firm- ness, the blood still forces its way tlirough the vessel beneath it. Now this hardness of the pulse is sometimes our best warrant for active depiction by means of the lancet : yet I say we must not trust to this alone ; for a hard pulse may habitually exist, where there is no inflammation. Certain chronic diseased conditions of the heart may occasion it; and it probably results also sometimes from some unnatural state, which is not inflammation, of the whole of the circulating system. When you happen to know your patient, and have ascertained what kind of pulse he has when he is well, and are previously aware that his pulse during health is tiot a hard pulse, you learn from that circumstance that the new quality it has now acquired denotes the presence of inflammation ; and usually of active inflam- mation, likely to go on, if not controlled, to the destruction of the pan it has seized upon Many persons, and young practitioners in particular, are apt to look to the fre- quency of the pulse, when they wish to ascertain the expediency of blood-letting: but really its frequency is very subordinate in itnportance to its hardness or softness: and this is very unlucky, because any body with his stop-watch in his hand can tount a pulse : but it is not every one who can tell a hard pulse when he feels it. BLOOD-LETTING. 145 The finger requires a certain education for that purpose ; and there are some persons who seem never to attain the tactus eruditus. I should advise you to attend par- ticularly to this quality of the pulse, and to compare your perceptions to the hardness or softness of the pulse in individual cases, with those of other medical men. The frequency of an inflammatory pulse ranges for the most part between 90 and 120. When the hard pulse is much more frequent than this, it commonly occurs either in young children, or in persons who are more than usually nervous and sus- ceptible ; or in persons who were previously labouring under some chronic and wasting complaint, in which the pulse was already frequent, though not hard : as, for example, in phthisical patients, when acute pleurisy supervenes upon tubercular disease of the lungs. As the hardness of the pulse is, with certain exceptions at which I have just glanced, our lawful warrant for general bleeding, so the disappearance of that hard- ness is a token that the blood-letting has been carried far enough. Again, the nature and importance of the organ affected will influence our judg- ment in respect to the question of abstracting blood. If the organ inflamed be a vital organ ; or if we are not sure about that, but have any reason to suspect that it may be a vital organ ; I need scarcely say that we must act upon the worst supposition, and bleed. But if the part be of less importance in the economy of the body; or if uiflammation is known ordinarily to run its course in that part without producing any abiding damage ; it may not be worth while, even though the fever be high and the pulse hard, to have recourse to this potent remedy, for the sake of subduing inflammation which is attended with so Httle danger. In this predicament may be placed many instances of cynanche tonsillaris, and of acute rheumatism. The sub- sequent debilitating effects of the loss of blood upon the system may be more certain and more hurtful than the effect of the bleeding upon the local inflammation is likely to be beneficial. [Without pretending to advocate the employment of blood-letting in every case of cynanche tonsillaris and of acute rheumatism, we must dissent from the correctness of Dr. Watson's position, that " even though the fever be high and the pulse hard," it may not be worth while to bleed " for the sake of subduing inflammation which, in these afTections, is attended with so little danger." When acute rheumatism occurs in young, robust, and plethoric habits, and is attended with considerable fever and a hard and accelerated pulse, we know of no remedy from which such decided advantage is to be obtained as from a well-timed resort to the lancet. The extent to which the bleeding is to be carried and the propriety of its repetition, must be determined by the circumstances of each case, and the effects produced by the first operation. We are no advocate, under any circumstances, for the profuse and repeated bleedings recommended by M. Bouillaud as a means of cutting short an attack of acute rheumatism ; we have had, however, ample experience of the very decided relief obtained by a prudent and well-timed use of the lancet in this disease. In many cases of cynanche tonsillaris, al.'^o. an early and full bleeding will have the effect of arresting the inflainmation, and thus of saving the patient from much suffering, if not danger. Even when the arrest of the disease is not affected by it, the inflammation is reduced in violence and shortened in duration. — C] The period or stage of the disease forms a most important element in the question before us. It is of inflammation while yet in its early progress, that blootl-lettino- may emphatically be pronounced the cure ; while the disease is still within the pos- sibility of resolution ; before there is any great amount of effusion, or any serious disorganization of structure. The sooner we bleed, the more surely will the inflam- matory process be moderated and limited, even when it cannot be wholly quenched. In no case within the range of medical practice is the maxim " principiis obsta" more imperative. Those among you who happen to be attending the wards of the Middlesex Hospital may wonder, indeed, after hearing my estimate of the power of blood-letting over inflammation, that I so seldom prescribe venesection there. The truth is, not that I undervalue the remedy, but that the time for its employment has generally gone by. The poor are unwilling to relinquish the occupations bv which they subsist : they struggle on as long as they can, and resort to hospital's only when they are compelled to do so by the exigency of their malady. Many of them labouring under inflammation, have been freely bled before admission. It \n 10 N 146 INFLAMMATION. commonly too late, when they present themselves, to expect that the course of the disease can be so arrested. The first effect of blood-letting is to deplete and relieve the labouring circulation. But when it is again and ag-ain repeated, it becomes (as the French say) spolialive; it robs the vital fluid of its nutrient and plastic materials. Pushed still further, it produces a peculiar state of the nervous sj'stem, marked by great weakness and irritability. Now although blood-letting is the summum remedium for inflammation at its commencement, there is a point beyond which it not only does no good, but is positively injurious. And this point it is not always easy to hit. On one side is the danger that the inflammatory action may continue and extend : on the other the danger that the strength of the system may be so reduced as to prove unequal to the process of restoration ; for, to remove the interstitial extra- vasations, and to repair the damage that has accrued, a certain degree of vital power is requisite, and a suflicient quantity of healthy blood. Bleeding will cure inflam- mation, but it will not always cure the effects of inflammation ; nay, it may render them lingering in their departure, or even determine their fatality. I cannot too often, or too strongly inculcate the precept, that in order to check and extinguish acute inflammation, you must, above all, bleed early. We judge that the bleeding has been carried far enough when the inflammatory fever subsides, or changes its character; when the pulse regams its softness, or undergoes some marked alteration ; when any of the signs (already specified) of sup- puration appear. Upon these points I hope to give you more explicit instruction when we come to special instances of inflammation. Whenever inflammation supervenes on other chronic disease : whenever it arises in the progress of idiopathic fever, or whilst the constitution is contaminated by some specific poison : whenever suppuration is inevitable, or even probable : in all these cases general bloodletting may be necessary, but it must be employed with great caution. Nor can w^e, safely, neglect the age, and sex, and general condition, of the sick person, when we are turning in our minds the propriety of bleeding. The very young, the old and the feeble, do not bear well the loss of much blood. This con- sideration is not to deter you from bleeding such persons when they are attacked by dangerous inflammation ; but it especially enforces, with respect to them, the gene' ral rule, that no more blood should be abstracted than is absolutely required to con- trol the disease. It is also very necessary to study the character and tendency of the reigning epi- demic : whether that may depend upon some predisposition silently and gradually produced in men's bodies by the agency of causes that are but little understood : or whether it may result from some peculiarity in the exciting cause of a particular epidemic disease. I have been long enough in practice in London to have learned, in common with others, how much the character of continued fever may alter. Since about the time when the virulent form of cholera made its first appearance among us, continued fever has nehher required nor borne the abstraction of blood as it did bear and require it for some years prior to that period. Perhaps some variation in the intensity of the poison may partly explain the comparative malignity — the greater tendency, I mean, to the typhoid type — v/hich marks certain epidemics of scarlet fever, small-pox and measles. The influenza, or epidemic catarrh, which was almost universal in this town and kingdom in the years 1833 and 1837, afforded a striking illustration of the point I am endeavouring to set before you. The iuHnm- matory symptoms — the bronchitis, and sometimes pneumonia — were in many crises strongly marked, and it was necessary to abstract blood ; but persons suffering under .iifluenza bore bleeding exceedingly ill, and where the use of the lancet could not be avoided, it was never resorted to without reluctance and misgiving. When we bleed in acute inflammation of an important organ, we endeavour, I say, to effect our purpose as speedily as possible, and with as little expenditure of the vital fluid as possible. It would be quite ridiculous to pretend to give any precise direction as to the number of ounces of blood that should be taken. You must stay by the patient, and bleed, in such cases as I am now contemplating, until you pro- duce some distinct impression by the bleeding ; and one of the best guides in this BLOOD-LETTING. 147 matter is the state of the pulse. If you find, as you sometimes will do, that the most pressing symptoms give way while the blood is still flowing — that the pain, for instance, is mitigated — that the respiration (when the lungs are concerned) becomes easier and deeper — that (in affections of the brain) the patient emerges from a state of stupor or delirium — you may be sure that you are doing right in bleeding ; but you must keep your finger upon your patient's wrist, and suffer the blood to flow, until the hard pulse is sensibly softer, or until symptoms of impending syncope appear ; and then you had better tie up the arm, and wait a few hours, and repeat the bleeding if the symptoms which at first demanded it again become urgent. As it is desirable to produce the necessary effect upon the system as quickly as may be, the blood should be taken pleno rivo ; i. e., a sufficiently large orifice should be made in the vein : and sometimes it may be right to open a vein in both arms : and the patient should be bled in the upright position. Faintness and syncope depend upon a defective supply of blood to the brain ; and therefore will be Ukely to occur the sooner when the force of gravity facihtates the descent of the blood from the head through the veins, and retards its ascent towards the head through the arteries. And conversely, the first thing to be done towards remedying syncope is to lay the person flat in a horizontal posture, or even with his head lower than his trunk. If you neglect these smaller matters, and make an insignificant slit in the vein, and suffer your patient to lay down whilst you are bleeding him, you will be obliged to take much more blood in the end ; or you may drain him of his blood and of his strength by repeated bleedings of this sort, and make no impression after all upon the disease. It is one of the numerous cases in which parsimony is not true economy. The quantity of blood requisite to be taken in order to produce the due effect is exceedingly various. It is a remarkable circumstance, well worth attending to, and much insisted upon of late years, especially by Dr. Marshall Hall, that a patient under the influence of mere inflammation will bear to lose a far greater quantity of blood without becoming faint, than he could bear in health : that the state of the system produced by the presence of inflammation protects it from the ordinary con-« sequences of loss of blood. The amount of the bleeding necessary to occasion syn- cope will be in proportion to the exigency of the case. This fact — if it be really a fact, as, indeed, I beheve it is — is evidently one of the highest value and importance, for it furnishes, what is always so desirable, especially in an uncertain art like ours, a simple rule of practice. Yet it is not a rule so firmly established as not to admit of exceptions. If the mere state of syncope was the curative influence required, Ave should have no difficulty. That the faintness does constitute a part of that influ- ence I fully believe. Dr. M. Solon even relates a case in which it sufficed to the cure of erysipelas of the head and face, attended with high fever. The patient fainted from alarm, before the vein was opened. The inflammatory symptoms there- upon ceased : but with returning animation they presently recurred. Again, prepa- ration was made for venesection ; and again the young lady lapsed into syncope : and this time the inflammation and fever disappeared, never to return. She is described as having been quite well the next day. I cannot, however, entertain a doubt that the withdrawal of a certain quantity of blood is, in almost every case, essential to the permanent control of common acute inflammation, attended with pyrexia : and it may be advisable to keep persons who, like M. Solon's patient, are of a timid disposition, and liable to syncope from slight causes, in a recumbent posture, in order that the requisite discharge of blood from the system may be obtained. In equivocal cases (and there are many such), where it is questionable whether the symptoms proceed from inflammation or not, the diagnosis may often be settled by observing the quantity of blood which, taken in the upright posture, suffices to bring on incipient syncope. Dr. Hall's book. On the Effects of Loss of Blood, is well worth your attentive perusal. He suggests that a scale of diseases might be formed, representing the protective influence of some maladies against the effects of blood-letting ; and the 148 INFLAMMATION. opposite influence of some others in producing preternatural susceptibility of those effects. " It would begin (he says) with congestion of the head, or tendency to apo- plexy ; inflammation of the serous membranes, and of the parenchymatous substance of various organs, would follow ; then acute anasarca ; and lastly, inflammation of the mucous membranes. This part of the scale would be divided from the next by the condition of the system in health. Below this would be arranged fever ; the effects of intestinal irritation ; some cases of dehrium ; reaction from loss of blood ; and disorders of the same class with hysteria, dyspepsia, chlorosis, and cholera morbus." With respect to the propriety of repeating venesection, it is his remark, that if, at the first blood-letting, much blood flowed before any tendency to syncope manifested itself, an early repetition of that remedy ^^^ll probably be required — and at any rate an early repetition of our visit to the patient will be proper. But this last precept is of universal obhgation in all cases of serious inflammation. I am ahnost afraid to tell you how much blood I have seen taken at one bleeding, lest I should seem to encourage you to imitate such heroic practice. I once slood by and saw, not without trembling — although I was quite free from responsibility in the matter — a vein in the arm kept open until seventy-two ounces (four pints and a half) of blood had issued from it : and then, and not till then, did the patient become faint. The event of the case quite justified the bleeding in that instance, for the man got perfectly well. It was a case of general dropsy, which had come on suddenl}', in a young and robust man. It occurred in the clinical wards of the Infirmary at Edinburgh ; the physician had desired the clinical clerk to bleed the patient in the erect posture, until some sensible effect was produced upon his pulse : and no such effect could be perceived until the enormous quantity I have mentioned had been abstracted. It is very seldom that such large bleedings are required ; you will generally find that five-and-twenty or thirty ounces, taken properly, will be suffi- cient to accomplish the purpose of the measure. Sometimes one such bleeding will extinguish, as it were, the inflammation ; sometimes two or three, or half-a-dozen may be necessary : and we judge of the propriety of repeating the venesection by the effect of the former bleeding ; by the character of the pulse ; by the appearance of the blood already drawn. It would be impossible, in a general account like the present, to lay down any minute directions on this head. I have hitherto been speaking of bleeding as we perform it for the cure of active inflammation, occurring in a person previously healthy, affecting an important organ, and attended with febrile disturbance of the system. But the abstraction of blood is scarcely less valuable as a remedial measure in chronic inflammation, when the system at large scarcely sympathizes at all with the local disease. And here it is that what is properly called local bleeding is so useful — by cupping glasses, or a moderate number of leeches. The object is always the same, viz. : to unload and relieve the turgid capillary vessels of the part : and this we could not do by general bleeding without carrying it to an extent which would be dangerous to our patient's existence. These local bleedings for chronic inflammation usually require to be often repeated. Considered as a remedy, blood-letting resembles some other remedies in this, that it must be proportioned and adjusted to the rate of progress, and the dura- tion of the disease. The remedy must be used chronically when the malady is chronic. A patient may lose, on the whole, much more blood for the cure of a chronic inflammation, than for the cure of one that is violent and acute ; but then the bleeding must be spread over a larger space of time. With respect to the relative merits and advantages of cupping and of leeches, as topical remedies for local inflammation ; it maj' be said in favour of cupping, that the precise quantity of blood taken away is more accurately determined in that manner, and the operation is sooner over, and is less fatiguing, than the suction of leeches. But on the other hand, the leeches seldom bungle in the operation, while the surgeon often does It requires a good deal of practice to become handy and dexterous in the applicuuon of the glasses — to avoid torturing and burning the patient — and therefore it is that in large towns, as in this metropolis, rupping is an art car- BLOOD-LETTING. 149 ried on bj^ a distinct class of persons. You may apply leeches also to parts where the cupping-glasses could scarcely be used. General bleeding, then, is best adapted to acute inflammation ; and topical bleed- ing is most appropriate in that which is chronic and slow. But a combination of the two is often highly proper and useful. You may lessen the force of the general circulation by venesection : but the small vessels of the inflamed part may remain unable to rid themselves of their excess of blood, and continue dilated and full. Such, at least, we may reasonably suppose to be sometimes the case ; and certainly we often act successfully upon that theory ; that is, we bleed from the arm, and at the same time, or presently after, we empty the capillaries of the labouring organ, or the neighbouring vessels, by the help of leeches, or by the scarificator and ex- hausted cup. The good effect of local bleeding, after the general febrile disturbance has abated under venesection, is often very marked in the relief of pain. I have recommended blood-letting to you when, among other circumstances, the pulse is full and hard ; and have stated that the blood should be suffered to flow until some distinct impression is made upon the system. But I wish also to apprise you, that you ought not to be deterred from bleeding merely because the pulse is small. It is very apt to be so in dangerous inflammations within the abdomen ; and it is a very curious thing that the pulse will often rise, and the artery develop or expand itself, during the time the blood is flowing. Now you must look upon that circumstance as a distinct impression made upon the system, although it is one of a rather different kind from what I spoke of before. You had better, in my opinion, pause when this effect is fairly obtained : for so great is the tendency to death by syncope in abdominal inflammation that it would not be prudent to urge the influence of the blood-letting further, at one time, than the change I have just mentioned. Wait, therefore, and repeat the venesection if the circumstances should again render it necessary. LECTURE XIV. Treatment of Inflammation, continued. Recapitulation. Bleeding. Purgatives. Mercury. Jlntimony. Digitalis. Colchicum. Opium, Local Remedies. External Cold. External warmth. Counter-Irritation. After pointing out to you, yesterday, the necessity of guarding your patient, as much as possible, from all stimulants or sources of irritation, both internal and ex- ternal, the avoidance of which constitutes what is called the antiphlogistic regimen, I began to speak of the remedies of inflammation. Now the great remedy in acute and dangerous inflammation is blood-letting; and when this remedy is used at afl, it should be used freely, and so as to produce a decided impression : and its efficacy will always be the greater, in proportion as it is applied in the earlier stages of the inflammation. The objects of the abstraction of blood are two-fold : to lessen the force of the heart's action is one object ; to empty the gorged capillaries of the part inflamed is the other. We effect the first of these objects, or both of them at once it may be, by making an orifice with a lancet, m the trunk of some convenient vein or artery, and allowing the blood to escape ; we ac- complish the second by making little incisions with a scarifier through the skin as near the inflamed part as we can, and forcing the blood through these little wounds by the pressure of the atmosphere : i. e., we take off the pressure from the part sca- rified, by placing over it a glass cup, from which the air has been in great measure exhausted, and then the unbalanced weight of the atmosphere upon the surrounding surface forces out the blood : or we suffer leeches to scarify the skin, and to suck out the blood. These two modes of drawing blood, from the trunks of the blood- vessels on the one hand, and from the capillaries on the other, we call, respi^ctively, general bleeding, and topical bleeding. I say the main point to be achieved in general bleeding is so to manage the opera- n2 150 INFLAMMATION. lion as to make a decided impression, as quickly as possible, upon the pu.se or the heart . and to do this we place our patient in an upright position, and make a free orifice in the vein of one or both arms. And when the force of the general circulation has been thus abated, it will in many cases be proper and necessary to take away blood from the capillaries also, in the neighbourhood of the suffering organ ; this is almost always safe and good prac- tice : there can seldom be any reason for abstaining from it, except when the general bleeding has brought the patient so low that the abstraction of a few more ounces in any way might be hazardous. But the employment of local depletion presently after general is then especially indicated, when the /oca/ symptoms remain unrelieved when, although the indirect symptoms which manifest themselves through the medium of the system at large have been moderated by the general blood-letting, yet the direct symptoms belonging to the part, and disturbing its functions, the pain for example, or the labouring breath, or the stupor, have not undergone a propor- tional improvement. Under such circumstances, the unloading the oppressed capil- laries by means of leeches or cupping-glasses will often be attended with the hap- piest effects. I mentioned that the most common way of performing general blood-letting in this country is by venesection ; and that the veins chosen, as the most suitable for that purpose, are the cephahc and basilic veins at the bend of the arm : but that Avhen, from accidental circumstances, blood cannot be obtained easily and abundantly from those veins, any other large and superficial blood-vessel may be opened. It matters little which, in my opinion, so far as regards the effect of the abstraction of blood upon the disease. Some persons are fond of opening the temporal artery when the inflammatorj' disease is situated in or about the head : and certainly, when we see this vessel starting from the surface hke a cord, and tortuous from its fullness, and visibly throbbing, we feel tempted to give vent to the blood which is distending it. But arteriotomy is not so easily managed as phlebotomy. It is sometimes difficult to get the blood to flow properly ; and it is sometimes difficult to stop its egress when we wish to do so ; and sometimes there are after-consequences which are far from being pleasant : little aneurismal tumours are apt to arise. It is, besides, desirable to avoid the necessity of bandaging the head, in order to restrain the further efflux of blood from the artery. Other practitioners recommend opening the external jugular vein in head cases, especially in children, whose veins in the arm are small. This is a plan which I have very seldom adopted, and which, I am bound to tell 3'ou, I do not much like : first, because I think it is seldom necessary ; secondly, because I think it is often unsafe. It is seldom necessary : for in children we can always get as much blood by topi- cal bleeding as will be equivalent to a general blood-letting. And it is unsafe in two ways. In the first place, it is not always an easy matter to stop the bleeding from the jugular vein, especially in a struggling and unmanageable child; and the difference of a few ounces of blood may be a fatal difference. Here also any com- pression of the neck, to stay the hemorrhage, might affect injuriously the cerebral circulation. Again, there is a distinct and peculiar danger attending the incision of this vein, that, namely, of admitting air into it. You perhaps are aware that if air enters a large vein near the heart, and passes on to that organ, it kills outright. If you open the jugular vein of a horse, and blow forcibly into it towards the heart, the animal drops down dead. The celebrated Dupuytren was performing some ope- ration about the neck, in the course of which he cut across one of the veins there situate : some bubbles of air rushed in at its open mouth, with an audible clucking noise, and, in an instant, his patient expired. The same frightful accident has occurred in operations performed in this country, and in America, I was told very lately that in one of our metropolitan hospitals it was thought right, for some reason or other, to bleed an adult patient by opening his jugular vein : the opening was made very near the clavicle, so that pressure between the orifice and the heart was difficult to effect. Of course the blood soon leaves the portion of the vein nearest the heart ; and whether by some suction power of the heart itself upon the veins, or how. one scarcely knows, but air rushed in, and the patient was presently a dead man. BLEEDING. 151 Perhaps misadventures of this kind may be capable of being prevented by using great caution in such cases ; but as it is the etiquette for physicians to direct but not to perform these manual services towards the sick, and as, therefore, I should incur all the responsibility, and at the same time be able to ensure none of the necessary care, I confess that I am shy of recommending venesection to be made in that parti- cular place. Whether, all other things being the same, the abstraction of arterial blood may be more or less effectual in restraining inflammation than the abstraction of venous, is more than I can tell you. When topical bleeding is employed with the view of disburdening the turgid capillaries, either in chronic inflammation, or in acute inflammation as an auxiliary to general bleeding, it would seem most expedient to get as near to the part affected as we can. To apply, for example, our cupping-glasses or our leeches to the tem- ples, or behind the ears, or just below the occiput in inflammatory affections of the head ; to the chest or the precordia, when the lungs or heart are the seat of the dis- ease ; to the surface of the abdomen, in inflammation of the liver, or stomach, or intestines, and so on. And this is the plan which I have almost always adopted ; and with such satisfactory results that I have felt Httle inclination to try any other. But many persons do believe that local bleeding is more useful when it is performed at some distance from the affected part : they would put leeches, for instance, on the insteps, to reheve an inflamed throat ; and they attribute the benefit that ensues to what is called revulsion : they suppose that the suction of the leeches solicits the blood, as it were, to that quarter, and diverts it from the vessels of the part that is inflamed. It seems to me that the revulsive influence of topical bleeding would be greater in the neighbourhood of the inflamed part than far from it. I know, how- ever, some very practical men who have been much struck with the results of thia distant blood-letting, which they had seen practised in the Parisian hospitals. Leeches are also sometimes applied at a distance from the seat of the inflammation, on another principle — that of drawing the blood directly from the veins which com- municate with the diseased part. In abdominal affections, in inflammation of the liver or intestines, the French are in the habit of applying leeches in great numbers to the verge of the anus : because, they say, the blood is then abstracted from the very veins through which it is returning towards the already overloaded organs. It is right that you should be aware of these opinions, and of this practice. I can say but little of it from my own knowledge. I can well believe, however, that it is good and useful practice : but in this country we should find it difficult to persuade many of our patients to submit to have leeches planted round the anus ; and I have seldom been disappointed of the benefit I expected from topical bleeding, when it has been employed at the surface, as near the part inflamed as possible. The evacuation next in importance to blood-letting, is purging. This is an expe- dient which in cases of violent inflammation, or high general fever, should scarcely ever be omitted. To keep the bowels what is called opoi, forms indeed a part of the antiphlogistic reg-zmpn ; but in acute inflammatory diseases, active purging is of very great service. These two points are gained by it. The stomach and intes- tines are freed from accumulated faeces, or other matters which, by their bulk or their acrimony, might prove irritating: and at the same time depletion is carried on by means of the serous discharge which is produced from that large extent of mucous merribrane. There are some cases of inflammation in which the operation of purga- tive medicines is of especial benefit ; as in inflammatory affections of the head, eitner external or internal, of which part these medicines assist or cause the depletion in a very sensible manner. We have an illustration of this in the paleness of the face, which often, during health, accompanies the action of a brisk cathartic. The use fulness of repeated purgatives is less distinctly seen in inflammations situated be- tween the thorax; although in these cases also they are often highly beneficial. They are efficient remedies, too, in all inflammatoiy conditions of the liver. Bui when inflammation has fastened upon the stomach or bowels themselves, although it may be indispensable that they should be unloaded of their contents, which are often composed of irritating, ill-digested food, and of morbid secretions no less feasinjj 152 INFLAMMATION. and hurtful, the propriety of going beyond this point is extremely questionable. I believe that much harm is often done by pressing the inflamed alimentary canal with active purgatives. But to all those points I shall have occasion to return. Next to blood-letting, as a remedy, and of vastly superior value upon the whole, to purgation, in serious inflammations of various kinds, is mercury. This mineral is really a very powerful agent in controlling inflammation ; especially acute, phlegmonous, adhesive inflammation ; such as glues parts together, and spoils the texture of organs. It is of the greatest importance that you should accurately inform yourselves concerning the various effects of mercury upon the system : the changes it produces ; the changes it arrests or prevents ; the cases in which it does good ; the cases in which it does harm ; that you should learn, in short, how to wield a very potent, but a two-edged weapon. If we inquire what mercury does when it is administered to a person in health, we find three very marked effects following its internal use. They vary, indeed, in different cases, and under different circumstances : but we know that the employ- ment of mercury under any of its usual forms of exhibition is often followed by increased watery evacuations from the intestines ; or by an increased discharge of bile ; or by an increased flow of saliva ; that is to say, it determines (as the phrase is) to certain secreting organs — the mucous membrane of the bowels, the liver, the salivary glands ; it augments their natural secretion ; and in this augmentation of s-ecretion is implied an increased afflux of blood to the secreting part. It is probable that mercury has a similar influence on most or all the secreting surfaces of the body, altering the "condition of the capillary circulation throughout. And an explanation of its curative power in inflammation has been drawn from this fact : it has been supposed that mercury thus tends to equalize the circulation ; that by causing the blood to be distributed in larger quantity than common upon several surfaces at the same time, it obviates, ^jro tanto, its excessive congestion or accumulation in any one organ. Whether this hypothesis in respect to the modus operandi of mercury be true or not, I will not pretend to say; but it certainly is not an unreasonable hypo- thesis. If you push this remedy in healthy persons, other effects ensue : inflammation is actually ;;rorf»ce(/; the gums become tender, and red, and swollen, and at length they ulcerate ; and in extreme cases, and in young children especially, the inflamed parts ma)'- perish : the cheeks, for example, sometimes slough internally. Not only the gums, but the throat and fauces, grow red, and sore and sloughy. Now you will do well to observe what is the character of the inflammation thus produced. It is superficial, spreading, erysipelatous : it leads to ulceration without any distinct occurrence of suppuration ; the ulcers enlarge. Of the three processes which I formerly pointed out as going on in different degrees, at the same time, in an ulcerated surface, that of absorption is vastly predominant ; and you will find that persons in whom this local aflfection, this condition of the parts within the mouth, has been produced, get rapidly thin ; their fat disappears ; they become emaciated. That is, the absorption of the old materials throughout the body exceeds the deposit of new matter. Patients who are kept under the influence of mercury grow pale as well as thin : and Dr. Farre, who has paid great attention to the effects, remedial and injurious, of this drug, holds that it quickly destroys red blood : as efft-ctually as u may be destroyed by venesection. As an example of this he was in the habit of relating in his lectures the case of a lady who was attacked with hematemesis : and whose gastric sj'stem and liver were gorged with blood, " Her complexion," said the doctor, "was compounded of the rose and the violet. Under a course of ■nercury she was blanched, in six weeks, as white as a lily." There are still other, occasional, effects of the continued introduction of mercury into the system: a peculiar eruptive disease; a peculiar condition of the nervous system : but with these I do not now meddle ; they will come under our more parti- cular consideraliou hereafter. At present I am desirous to place such facts before you as may help you to determine in what cases mercury is a fit remedy for inflam mation , In what oases it would be improper to give it. The facts T have already MERCURY. 153 mentioned show that it has a loosening effect upon certain textures ; that it works by pulling down parts of the building. But the great remedial property of mercury is that of stopping, controlling, or altogether preventing the effusion of coagulable lymph ; of bridling adhesive injiam- mation; and if we, in our turn, could always bridle and limit the influence of mercury itself, it would be a still more valuable resource. From the little I have now said you will readily understand in what description of cases mercury is likely to be useful. In common adhesive inflammation, whether of the serous or the areolar tissues ; whenever, in fact, you have reason to suppose that coagulable lymph is effused, or about to be effused, and mischief is likely to result from its presence, then you may expect much benefit from the proper admi- nistration of mercury ; as an auxiliary, however, to blood-letting, not as a substitute for it. On the other hand, mercury is likely to be hurtful in those forms of disease " where the morbid action approximates to its own action." In cases of erysipela- tous inflammation having a disposition to gangrene ; in scrofulous diseases ; in inflammatory complaints attended with general debility, and an irritable condition of the nervous system, or a manifest tendency to take on a typhoid character. When we have to contend with acute inflammation, and desire to prevent or arrest the deposition of coagulable lymph, our object is, after such bleeding as may have been proper, to bring the system as speedily as possible under the specific influence of mercury. How may tliis best be done ? and how are we to know that it has beea achieved ? I will answer the last of these questions first. We know that the whole system has been brought under the specific influence of mercury, as soon as its effects become even slightly perceptible in the gums and breath of the patient ; and in adults we cannot be sure of it before. The gums grow red and spongy ; the patient complains that his gums are sore : and that he has a metaUic taste, a taste hke that of copper, in his mouth ; and an unpleasant and very peculiar foetor, easily recog- nized again when it has been once perceived, is smelt in his breath. These symp- toms are enough : you need not in general look for any more decided affection of the mouth, such as ulceration of the gums, swelling of the glands beneath the jaw, and of the tongue, and a profuse flow of saliva. Formerly, when it was believed that the material cause of the disease was carried out of the body with the saliva, the mercurial treatment was continued with a view of producing the discharge of many ounces, and even of a pint or two, in the twenty-four hours : but all that is requisite is that the gums should become distinctly tender, and that the mercurial foetor should be unequivocally manifest, and that these symptoms should be kept up for a certain time. Now this is best effected, usually, by giving some form of niercury in equal and repeated doses, by the mouth. For urgent cases calomel is the best form in which it can be administered : two or three grains, given every four or six hours, will generally suffice to touch the gums in the course of thirty-six or forty-eight hours. If it acts as a purgative its specific effect upon the whole system will be postponed by that circumstance ; and it then becomes expedient to combine with it just so much opium as will prevent its passing off' by the bowels. A quarter of a grain of opium with two grains of calomel — or a third of a grain of opium with three or four grains of calomel — will generally be sufficient to restrain the purgative operation of the latter. When a speedier effect is desirable we give larger doses ; such as five or ten grains every three, or even every two hours: or we combine mercurial inunction with the exhibition of calomel by the mouth. It is impossible to lay down any precise rule that will fit all cases. Blue pill, or the hydrargyrum cum creta, may, in certain cases, be preferable to calomel ; but they must be given in greater quantity. Some practitioners believe •.hat a combination of blue pill and calomel acts sooner, and answers better, than a proportional dose of either, given alone. This mode of administering mercury, so as to affect the system at large, is emi- nently useful in many instances of acute phlegmonous inflammation, after "ii'peding 154 INFLAMMATION. has been carried as far as the circumstances of the case may warrant. I repeat that it must not be allowed to supersede blood-letting. Previous bleeding renders the body more readily susceptible of the influence of mercury ; and the operation of the mercury comes in aid of the salutary effect of the abstraction of blood. The two remedies accomplish by their joint power what neither of them could accom- plish singly. It is important to know that different persons admit of, or resist, the specific agency of mercury, in very different degrees ; so that in some patients the remedy becomes unmanageable and hazardous ; while in others it is inert and useless. It is most grievously disappointing to Avatch a patient labouring under inflammation which is hkely to spoil some important organ, and to find, after bleeding has been pushed as far as we dare push it, that no impression is made upon his gums by the freest use of mercury. Such cases are not uncommon ; and unfortunately they seem most apt to occur when the controlling agency of mercury is most urgently required. On the other hand, there are persons in whom very small quantities of mercury act as a violent poison ; a single dose producing the severest salivation and bringing the patient's existence into jeopardy. This history was told to Dr. Farre by a medical man, under whose notice it fell. A lady, whom he attended, said to him, at his first professional visit to her, " Now, without asking why, or speculating about it, never give me mercury, for it poisons me." Some time afterwards she met with the late Mr. Chevalier, and spoke to him about her complaints ; and he pre- scribed for her, as a purgative, once, two grains of calomel, with some cathartic extract. She took the dose ; and the next morning showed the prescription to her ordinary attendant. " Why (said he) you have done the very thing you were so anxious to avoid ; you have taken mercury." She replied, " I thought as much, from the sensations I have in my mouth." Furious salivation came on in a few hours ; and she died, at the end of two years, worn out by the effects of the mercury, and having lost portions of the jaw-bone by necrosis. Another medical man informed me that he knew a person so susceptible of the influence of mercury, that when his wife had rubbed a very small quantity of white precipitate ointment upon her neck for some cutaneous affection, after sleeping with her his gums were tender for three or four days, and slight salivation took place. This did not happen once only, but three several times. On one occasion this same man took two blue pills, as preliminary to a common purge, and he was salivated profusely for six weeks. Cases similar to these occur now and then to most medical men : we cannot tell beforehand in whom such effects are to be looked for ; but it is never prudent to neglect any warning which the patient gives of his own previous experience on this point. You will generally find that where the affection of the gums and salivary organs goes on to a troublesome or distressing extent, it has super- vened upon the employment of a very moderate quantity of mercury. So distressing sometimes are these effects of mercury upon the mouth, that I may pause a moment to tell you what I know about the means of remedying them. You will constantly be called upon to do something for the relief of this disease (for so we must call it), which you yourselves, or some of your brethren, have with the best intentions inflicted. I have tried all sorts of expedients; and I have asked a great number of my friends what is the best pfan to adopt in such cases : but I never f ould get mucn satisfactory information from them. Some thought purging was the best thing. Others recommended alum gargles ; or gargles made with the chloride of soda ; and these last certainly have one good effect, that of correcting the foctor. A dilute solution of chlorine in water, much used at the Middlesex Hospital, is better still. Others believed that sulphur, which has long been prescribed in such emer- gencies, was really of service ; and some advised that the patient should be as much as possible in the open air: a few commended iodine. All admitted that they knevir of no certain remedy. Neither do I. But there are two or three expedients which I am confident are often of very great use in checking the violence of the salivation, and in removing the most distressing of its accompaniments. If there be much external swelling, treat the case as being, what it really is, a case of local injlamma- iton : apply eight or ten leeches beneath the edge of the jaw bones, and wrap a soft MERCURY. 155 poultice round the neck, into which the orifices made by the leeches may bleed ; and I can promise you that, in nine cases out of ten, you will receive the thanks ot your patient for the great comfort this measure has afforded him. Pure tannin, moistened and smeared upon the spongy gums, is remarkably efficacious in render- ing them firmer and more comfortable. But this is not always to be procured : and when the flow of saliva, and the soreness of the gums, formed the chief part of the grievance, I have found nothing more generally useful than a gargle made of brandy and water ; in the proportion of one part of brandy to four or five of water. This last- piece of practice I learned from the present apothecary to the Middlesex Hos- pital ; I have tried it over and over again ; and I tell it to you as a thing worth remembering. These little points are by no means to be despised. A very fashion- able and successful physician, now dead, used sometimes to say when he met others of his brethren in consultation, " It is all very well to speculate about the exact situa- tion, and the precise nature of the disorder, but the question with me is, ' what is good for this, that, or t'other thing V " A wise phj'sician will seek to combine with an accurate knowledge of disease, and settled principles of treatment, those practical expedients and minor appliances which are picked up by casual experience ; which could never have been reasoned out : and which sometimes constitute nearly all that we can do for our patient's benefit. But to return to mercury as a remedy against inflammation. Tt is of great service m many cases of chronic inflammation ; and I may repeat here the observation I formerly made when speaking of blood-letting — that the treatment must keep pace, as it were, with the disease. When textures have been slowly altered by a gradual deposition of coagulable lymph, we should gain but little by suddenly or speedily salivating our patient. The lymph, if it can be dispersed at all, must be gradually taken up again : and mercury, given with the view of promoting its absorption, must be slowly and gradually introduced into the system ; and its specific influence, when at length it is felt, must be sustained for a considerable length of time. You must not expect any good, but the contrary, from the exhibition of mercury in scrofulous inflammations ; and where the scrofulous diathesis is well marked, you should be cautious in giving mercury at any time. But I am certain that many men are too scrupulous in this respect ; and that, through over tenderness of your patient's constitution, you may risk his life, by withholding mercury because he shows tokens of scrofula. You may recollect my stating that scrofulous persons are not exempt from attacks of common inflammation ; and in some such cases the pos- sible aggravation of their general ill health, by mercury, is not to be put in competi- tion with the immediate danger from the local inflammation. I have again and again seen scrofulous patients benefited by moderate salivation ; which, if it proved injurious at all to their general condition, Avas certainly less injurious than the unchecked local complaint would have been. ' There are some other remedies for acute inflammation which, in this general account of its treatment, I must briefly notice. Antimoyiy is one of them ; and a very valuable remedy it is in some forms of inflammatory, disease. Antimony, properly administered, subdues the action of the heart and arteries, producing nausea, paleness, and sinking of the pulse, and frequently great relief to the local symptoms. You bring the circulation into that state into which it may be brought by free blood- letting. But when the violence of the inflammatory symptoms recurs again and again, you cannot again and again employ the lancet : or if you do so employ it as at length to extinguish the inflammation, you reduce your patient to a state of pitiable, and even perilous, debility. Now you may continue or repeat the depression of the circulation by means of antimony, without any dread of such subsequent Aveakness. Antimony, so far as m_y own observation goes, is admirably suited to cases of active inflammation, in which mercury would either be not so useful, or could not be brought to bear. It is in inflammation of the mucous membrane of the air passages that antimony is so signally beneficial. You will see a patient labouring for breath, unable perhaps to he down, with a turgid and livid countenance from imperfect arterialization of the blood. He has been ill but a short time ; it is an acute aflTec- tion ; and upon listening at his chest you hear that pecuhar wheezmg sound which 156 INFLAMMATION. we call sibilus, in every part of his lungs. I shall have to describe this sound, and •jts causes, and its meaning, in a future part of the course. You give such a patient repeated doses of antimony ; he becomes sick, vomits perhaps, but he feels nausea : his pulse becomes less forcible, his face grows pale, and he can breathe again. The nausea is not a pleasant sensation ; but the want of breath is a far more distressing one ; and that is greatly mitigated. Perhaps free secretion takes place from the congested membrane, and then the patient is easy and safe. Now you could not effect this change so quickly and readily, or so conveniently, by mercury, and per- haps not at all. Bronchitic affections are very common in children, in whom it is usually difficult to induce the specific influence of mercury. On the other hand, antimony does not appear to be nearly so valuable a r^edy as mercury, when serous membranes are inflamed. The French and Italian physicians place much rehance upon antimony for the cure of inflammation ; and they seem to know Httle or nothing of the remarkable agency of mercury upon that disease. For my own part I do not see how any useful comparison can be made between these two substances in respect to inflam- mation, considered generally, as we are now considering it. There are some par- ticular forms of inflammation to which the one remedy is better suited, and there are others in which the other is most effectual. I must content myself for the present with having adverted to these distinctions. As to the form in which the antimony should be exhibited, I apprehend that we hall all come at last to freshly dissolved tartar emetic. The antimonial powder is of ver}^ uncertain strength; and the antimonial wine contains too much spirit to allow of its being given in large and frequently repeated doses. It is a curious circum- stance, that akhough vomiting and purging are apt to be produced by the first two or three doses, they usually cease when the same quantity is persevered with. Tolerance of the remedy is established. But akhough these unpleasant primary effects cease, the curative agency of the antimony appears to continue. When you desire to obtain its full influence in a short time, you may dissolve a grain of the tartar emetic in two ounces of hot water, and give a fourth part of the solution every half hour. If the patient becomes pale and sick, you pause awhile and allow him to recover himself; and if the inflammatory symptoms return, you repeat the medi- cine. It sometimes acts violently upon the bowels, and then it is necessary to add a few drops of laudanum to each dose. [The remarks of Dr. Watson upon the remedial effects of tartar emetic in inflammatory affections, are perfectly correct in reference to these diseases as they occur in the adult; in the inflammatory diseases of infants and young children, however, the tartar emetic is not a remedy that can be safely employed ; it produces in them always very considerable and enduring disturbance of the stomach, and in many cases a state of extreme and, as remarked by a late writer — Dr. Wilton, (Prov. Med. and Surg. Journ.) — even fatal depression of the vital powers. — C] Digilalis is another powerful medicine, from which, as a remedy for active inflam- mation, much Avas at one time hoped ; but this hope has been in a great measure disappointed. It is not a manageable remedy in such cases. Its singular property of retarding the circulation, of bringing down the number of the heart's pulsations, and abating its force, led to the expectation that it might render the use of the lancet unnecessary ; that it might check the inflammatory process without permanently reducing the strength of the patient. But if you give moderate doses of digitalis, Its peculiar effect upon the pulse comes on at very uncertain periods, and may be postponed until it is tO' late to be of any service. If, on the other hand, you give it in such quantity as speedilj'' to affect the heart's action (which is what we want in acute and serous inflammation), then you are never secure against what may b" called its poisonous effects ; deadly faintness, frightful syncope, and even death itself. Most practitioners can tell of cases in which patients, who were taking full doses of digitalis, have suddenly expired ; and when the remedy has appeared to have had more to do with the fatal event than the disease. There are practitioners, however, and I know one of them, who affirm that digitalis may be given, after due depletion, and in acute inflammation, in very large, and I should say starthng doses, with tho COLCHICUM, OPIUM. 157 very best «ffects — doses which range from half a drachm to half an ounce, and even six drachms, of the officinal tincture. I confess to you that I should be very unwill- ing to sanction this mode of using digitalis. I never attempt to employ it with the view of knocking down acute inflammation — to which alone you will observe that my present remarks apply. Digitalis is often of great service in other complaints ; but I am not at present discussing the remedial virtues of digitalis, or of any other drug, except so far as they relate to the cure of recent and active inflammation. Colchicinn is a drug which is often prescribed in inflammation. It is a most valu- able remedy in certain specific forms of inflammation. But for repressing common phlegmonous inflammation we have much more certain and better remedies. For this purpose colchicum is, I believe a very unimportant medicine. I have formerly been asked, by students attending here — and therefore \ antici pate the question now — respecting the utility of opium as a remedy in inflammation. Certainly opium, like most of our powerful medicines, may do much good, as it may do much harm, in different inflammatory diseases ; and it is not very easy to point out clearly, in a general view of the treatment of inflammation, the rules for its administration by which we must be guided in diflferent cases. Yet there are a few general observations which I may make now on this subject. The administration of a full dose of opium has been strongly recommended after that free and effective bleeding which I have already described. It prevents the rekindling of the inflammation which is apt to result from irritation of the nervous system — a kind of irritation, you will remark, which the copious abstraction of blood is calculated to produce ; or to augment, if it flnds it already existing. The opium soothes this nervous irritability, and it must be given, when given at all, in doses which will have that effect. It is best adapted to those cases in which a natural irritability is inherent in the constitution of the patient — to those in which .such irritability has been acquired by bad habits of life — and to those in which the local disease is attended with much pain, which is in all constitutions a source of irritation. However, this is a remedy which requires to be used, in inflammation, with great caution and discrimination. In cases of active inflammation within the cranium, its propriety is very questionable. It is apt to confuse both the patient and his physi- cian, who is unable to say, after a full dose of opium has been given, how much of the stupor that follows is owing to the disease, and how much to the drug. It is a very ticklish remedy in pectoral inflammations. I believe that by the free use of opium I saved the life of a relation of my own, an old lady, who was in danger of being worn out by the cough and bronchial affection which attended the influenza. On the other hand I certainly have known more than one person, labouring under extensive and severe bronchitis, so effectually quieted by a dose of the same medi- cine, that they never woke again. As a general rule I should say that you must be very careful how you venture upon opium in inflammatory diseases that tend to pro- duce death by coma, or apnrea. If there be any unnatural duskiness of the face, if ever so sHght a tinge of purple mingles itself with the red colour of the lips, this is an appearance which (with certain exceptions, to be specified hereafter) should warn you against opium. It shows that the blood is imperfectly arterialized : and imper- fect arterialization of the blood, as I hope you all know, either results from, or con- duces to, a state of coma. On the other hand, it is, cseteris paribus, in cases where the tendency is towards death by asthenia, that the use of opium, as a remedy for inflammation, is most serviceable. It has a capital effect often, after free bleeding, in cases of peritonitis, and of enteritis. It probably does good in various ways : by quieting the nerves — by sustaining the faltering action of the heart — by keeping the inflamed parts at rest. There are some frightful accidents in which we can expect little from blood- letting, but in which the judicious employment of opium affords some glimmering of hope. I allude to those cases of intense and general peritonitis which arise upon the escape of irritating substances into the cavity of the belly ; the contents of the intestines, from ulceration or from external injury ; urine from rupture of the blad- der ; and so on. If there be any hope in such cases, it is to be found in the con o 158 INFLAMMATION. tinucd exhibition of opium in considerable doses. But upon all these points I shall go more into detail when we come to consider individual diseases. A very few remarks, in respect to external remedies in cases of inflammation, will terminate both this lecture and what I have to say, thus generally, of the treatment of inflammatory complaints. The application of external cold will aid us very powerfully, in certain serious cases of inflammation; and especially in cases of inflammation within the cranium. It is really wonderful what a sedative and soothincr efl^ect this expedient frequently has in allaying delirium, the result of active inflammation of the brain and its membranes. Thin folds of linen, kept constantly moist and cold by cold water, are placed upon and around the shaven head. We often apply ice in the same way. But I need not go at present into any detail on this subject ; I will only observe, that we have a most excellent and simple guide as to the probable usefulness of cold application to the head, in the sensations of our patients. It is very lucky that it is so. As long as the cold cloths, or the bags of ice, are pleasant and grateful to the patient, so long we sedulously continue to apply and renew them ; as soon as the patient dislikes them, they had better be intermitted. Cold apphcations to the chest, and to the belty, in active inflammation of parts situated within those cavities, have been praised by some practitioners ; but I believe are veiy seldom emploj^ed. I have no personal experience either of their utilitj'', or of their hurtfulness. I confess that I should not like to use them. I should think that the effect of the cold, in driving the blood from the cutaneous vessels, and accu- mulating it in internal parts, would be hkely to be injurious. We shall see, by and by, that the contents of the skull are somewhat differently circumstanced, in this respect, from those of the thorax and abdomen. The totally opposite measure, applying 7varmfh to the surface, is of very great service in many cases of internal inflammation ; especially in inflammations of the abdominal organs. We speak of cold lotions, and of hot fomentations. These last are managed in various ways, into Avhich I do not at present enter. They seem to do good by determining to the surface ; they promote perspiration ; they mitigate pain, and persuade to sleep. In cases of external inflammation, sometimes cold applications are found to be of use, and sometimes warm. In this matter, also, the sensations of the patient afford the best criterion. Both of them tend, in different circumstances, to promote reso- lution. We have an illustration of the beneficial agency of cold applications for this purpose in the treatment of recent burns and scalds, particularly Avhen the injury is superficial, and the skin has not been destroyed. Probably there is scarcely any one present who has not experienced the rehef given to the pain of a burned finger, by dipping it in cold water; and the return of the pain upon taking the finger out again. The cold may be so constantly applied that the pain will cease to recur when the application is at length suspended. Dr. John Thomson relates a case in which a burned arm was kept immersed in cold water for two days and two nights incessantly ; and inflammation Avas thereby wholly prevented. I have known this expedient fail, however. A nurse in the Middlesex Hospital fell as she was car- rying a pail of hot water upstairs, and in her fall thrust one of her arms into the scalding liquid. Without loss of time she plunged the same arm into cold nater; but after a while was obliged to desist; the cold immersion bringing on severe ngor?. Tn ei3'sipelas I am persuaded that warm fomentations not only afford more :omfort, but are more effectual and safer than cold lotions. Independently of their occasional influence in promoting resolution, warm appli- cations — warm soft poultices for instance — are often used with the view of forward- mg suppuration. Hence this rule. Whenever resolution of the inflammation is possible — but suppuration is likely to ensue — warm applications are the most proper: because, under their use, we have an equal chance of obtaining resolution, with less Ijfazard of retarding or rendering untoward the process of suppuration, in case resolution does not take place. Coxinter-irritation, by means of blisters, sinapisms, irritating ointments, setonB HEMORRHAGE. 159 issues, or moxas, is often very beneficial. It probably operates by attracting blood into the neighbouring parts, and in the same degree diverting it from the inflamed part. It is most serviceable in chronic inflammations, and towards the decline of those which are acute. It is particularly adapted to scrofulous affections. There is an objection to the use of counter-irritation during the height of the inflammatory fever, on account of the increase of general irritation which it would then occasion. Neither in local inflammation should counter-irritation be applied very near to the inflamed part. Blisters upon the head or neck, are not proper, therefore, at least in the early stages of the disease, in acute inflammation within the cranium ; but they are sometimes applied in such cases, with advantage, to the lower extremities. To the chest, however, in thoracic inflammation, and to the belly in abdominal, bUsters are often not only perfectly safe, but of the greatest use, as will, I trust, be apparent as we go on. LECTURE XV. Hemorrhage: — most commonly by Exhalation. Habitual Hemorrhages. Tlca- rioKS Hemorrhages. Idiopathic Hemorrhages. Active and Passive. Symp- tomatic Hemorrhages. Usual Situations of Hemorrhage. Symptoms and Diagnosis. Principles of Treatment: In the course of that somewhat cursory account which I have been endeavouring to give you of the general facts and doctrines of pathology, as a preparation for the better understanding of special forms of disease, we reached, some lectures back, the subject of local plethora or congestion. From that point our road branched off" in three several directions. We have pursued the first and main branch to its ter- mination ; that which led to the discussion of inflammation. We must now go back to the same point again, and follow first the one and then the other of the two remaining branches, w^hich conduct respectively to the consideration of hemorrhage and of dropsy. These branches are shorter than that along which we were last travelling ; but they are not uninviting ; they will open to us, if I mistake not, some interesting views of the country of which, we purpose, in the end, to make a more particular survey. You are to observe that I treat of hemorrhage only so far as it falls to the care of the physician. The subject is exceedingly full of interest in its relation to surgery : and it will receive at the hands of my colleague all the attention which its great importance, as a surgical accident, demands. But ive, also, as physicians, have much to do with hemorrhagie ; with what, for distinction's sake, I may call medical hemorrhage ; which differs in kind, in cause, in its consequences, and in the treatment it requires, from that which surgery con- templates. In surgical or traumatic bemorrhage the blood flows from some considerable vessel, which has been cut or torn, or somehow ruptured. You would greatly mistake, if you inferred from that circumstance (as you naturally might), that it is Kstfally so — the only difference being in the situation of the vessel — in medical hemorrhage also. Yet that is the popular notion. When blood gushes out from internal parts, through any of the natural apertures of the body, the person is said and supposed to have broken a blood-vessel. But this is rarely, though it is sometimes, the case. In nine cases out of ten, if there be any rupture at all, it is rupture of numerous capillaries only : but even of this there is often no evidence. Whence, then, and how, does the blood escape from its natural channels? Why, it exudes from the unbroken surfaces of organs, without any appreciable lesion of arteries, veins, or capillaries ; just in the same manner as sweat oozes from the skin, macus from the inner surface of the bowels, and serum or synovia from th)i ICO HEMORRHAGE. membranes that respectively furnish those fluids ; and probably by the very same outlets. This certainly is a very remarkable circumstance, if it be true ; and you will na- turally ask what proof we have of its truth. Tlie proof is simple, and, I think, conclusive. "VVe examine the surface from which the blood must have proceeded, and we find it entire : we wash and even macerate it: we employ the microscope to assist our powers of vision : yet we fail, after this careful inspection, to discover the slightest breach of substance, or any appearance of erosion. When, for example, hemorrhage has occurred so profusely from the stomach oi bowels, that the death which ensued could be sufficiently accoimted for by the mere loss of blood, the whole tract of the alimentary canal has been diligently scrutinized, and has exhibited no ruptured blood-vessel, no abrasion even of its surface, nor any perceptible alteration of texture. Sometimes its mucous membrane appears, here and there, of a red colour, and, as it were, charged Aviih blood. Sometimes it is pale and transparent, while the vascular net-work visible immediately beneath it is gorged and turgid. Sometimes the whole is colourless; the same net-work of vessels hav- ing been completely emptied by the previous hemorrhage ; and sometimes, again (and this is very illustrative of the mode by which the blood has issued), vast num- bers of small dark-coloured masses, like grains of fine sand, can be made to start from the surface of the membrane by slight pressure. There can be no doubt that these are minute portions of blood which had remained and coagulated in the vessels or apertures forming the ultimate channels of the hemorrhage. We have absolute proof, therefore, that hemorrhage may transude through an uninjured surface : nay, in some rare cases, the process has been actually witnessed. There are well-authenticated instances on record of cutaneous hemorrhage ; where a dew of blood has appeared upon some portion of the skin, has been wiped away, and has reappeared ; and that, again and again, without any perceptible alteration of the affected surface, beyond some occasional variation in its colour. So, again, the menstrual discharge has been seen to issue guttuihn from the healthy surface of a living but inverted uterus. I confess, however, that, although this analogical fact helps our conception of the manner in which blood may be exhaled from an un- broken membrane, I should not lay much stress upon it for any other purpose. It is not exactly a case in point. The process of menstruation cannot be looked upon as »i morbid process. During a certain portion of the life of an unpregnant female, it IS not only consistent with perfect health, but even essential to it ; and the fluid poured out is not strictly blood. That the blood proceeds from the same vessels or apertures, Avhich, in health, pour out the fluids natural to the part, is rendered the more probable by this fact : — that certain hemorrhages are ushered in and succeeded by an increased efflux of the fluids which belong to the surface concerned. In hemorrhages from the mucous mem- branes the following succession of events is, in some persons, habitual. First, there is an augmented flow of mucus alone ; then of mucus tinged with blood ; then of pure blood : and the hemorrhage recedes by a similar but inverse gradation, towards a mucous drain, which itself at length decreases or disappears. When blood thus exudes, we say that the hemorrhage takes place by exhalation. It is a convenient word, and will spare circumlocution. What the vessels or out- lets to which we give the name of exhalants really are ; whether they be branches from the capillaries not large enough in the natural state to admit the red particles, or whether they be mere pores in the sides of the capillaries ; these are points con- cerning which we have no positive knowledge. We know, indeed, that such chan- nels must exist, though we cannot demonstrate or see them ; and we know that wbik every part of the body is in a state of health and integrity, they do not aUow the blood, as such, to pass through them. I am aware that my learned colleague Dr. Todd objects to this doctrine of hemor- rhage without rupture, even of capillary vessels : arguing that, if the red corpus- cles of the blood, which measure from 4 ocu to 3 o'cu'-^ of ^"^ i"^^ i" diameter, could pass through lateral pores in those vessels, such pores must be large enough to be- BY EXHALATION. 161 come visible under the microscope. But on the other hand, Mr. Wharton Jones, who also is well versed in the use of that instrument, declares that the red corpuscles "can readily accommodate themselves to vessels of a diameter less than their own." However this may be, the distinction is broad enough between hemorrhage from a palpable leak in a large vein or artery, and hemorrhage from innumerable capillaries in which no rent can be demonstrated. Treating, then, this question of rupture according to the old maxim, that de non apparentibus et de non existendibus eadem est ratio, 1 shall venture to adhere to the term exhalation. Now, although internal hemorrhage may happen in other ways ; as from the bursting of an aneurism, or from an opening made in a large vessel by progressive ulceration ; yet in by far the greater number of cases it takes place by exhala- tion. Exhalation is the rule — other modes of hemorrhage furnish the occasional o exception. I must exclude, however, from this general statement one very important hemor- rhage. In the brain, the former exception becomes the rule. In almost all cases cerebral hemorrhage results from the rupture of a blood-vessel. There are various kinds of hemorrhage by exhalation. I will bring them before you, in succession, as clearly and concisely as I can. In the first place there are hemorrhages which, although they do not belong to the state of health, if we take mankind in general, yet when they do occur, cannot pro- perly be called diseases. There are some persons — I believe I may say there are many persons — who are subject, during the greater part of their fives, to discharges of blood ; which happen again and again, commonly at regular intervals, without any perceptible detriment to the general health, independently of any obvious ex- citing cause, and (as it would seem) from some inherent property or necessity of the system. Hemorrhages thus occurring, I will call habitual hemorrhages. They proceed more commonly from the rectum, and from the nares, than from any other parts ; although instances are recorded of their taking place from the bladder, and from the bronchi. Appertaining to the original constitution of the body, this disposition to periodic hemorrhage has been sometimes observed to be hereditary. You will at once be struck with the analogy which obtains between these habitual hemorrhages occurring in either sex, and the monthly discharge which is pecufiar to the female. The analogy is even closer than it may at first sight appear: but it is more distinctly marked in some individuals, liable to habitual hemorrhage, than in others. It was one of the singular notions of the celebrated phrenologist M. Grail, founded upon his analogy, that there is such a thing as male menstruation. The points of resemblance between the two phenomena will be manifest in the following summary of the characters belonging to habitual hemorrhage. Like the catamenia, these hemorrhages do not ordinarily prevail throughout the whole course of life. In most cases they do not commence before the period of adolescence ; and they cease altogether, or recur at distant intervals only, in declin- ing age. Their first eruption is sometimes preceded by a state of general indisposition, more rarely by slight febrile disturbance, and even (according to some observers) by a sort of chlorosis similar to tnat which affects young girls in whom the menstrual evacuation is delayed or suspended. The hemorrhage sometimes recurs at precisely regular intervals, and by monthly periods more commonly than any other : being announced, on each occasion, by the same preludes, proceeding from the same part, continuing for the same space of time, and furnishing always about the same quan- tity of blood. Its accidental interruption is almost uniformly the cause or the conse quence of some derangement of the health : and when it becomes excessive i: becomes, like too profuse menstruation, a disease. It forms a very curious part of the general history of hemorrhages that they aie not unfrequently vicarious, or supplemental, sometimes of each other, but more often of the monthly discharge from the uterus. Females are hable to perverted men struation (so to call it) through other channels than the natural one : and here agam the analogy between the catamenia and habitual hemorrhage comes into view. The hemorrhages which belong to the constitution are apt to wander in their seal. As 11 o2 IG2 HEMORRHAGE. bleeding from the lungs, stomach, rectum, or skin, sometimes follows upon the sus pension of the menses, so bleeding from the bladder, from the mouth, and from other parts, has been occasionally observed to succeed the suppression of habitual hemor- rhois. These hemorrhagic deviations take place commonly by the same organ on each occasion ; more seldom by different organs in succession. It is almost always in this supplementary manner that the rarer forms of hemorrhage occur, and those of the skin in particular. This singular migration, this interchange of place between certain hemorrhages, seems calculated to throw some light upon the obscure doctrine of revidsion : a doctrine to which [ have already more than once referred, and which, though it is very imperfectly understood, is of frequent avail in the practice of physic. Vicarious hemorrhage always denotes a disordered slate of the general health : and must be considered, in itself, as a malady. Again, there are certain forms of hemorrhage, not habitual, which may be deno- minated idiopathic : inasmuch as they are apt to arise without any perceptible con- nection with antecedent local disease. In other respects, however, they differ considerably, and require to be further distinguished : and the terms active and passive, which are in common use, will sufficiently express the two forms of idiopathic hemorrhage that I wish to bring under your notice. Active hemorrhage is preceded by active congestion, and therefore is akin to inflammation ; and it often requires the treatment of inflammation. Passive hemorrhage often occurs without any apparent previous congestion of any kind. Hemorrhage of this passive character has been ascribed to some change — different from that which we conceive to be produced by the distension of plethora — in the vessels or apertures through which the healthy exhalations are transmitted. The change is considered as being of the nature of morbid debility or relaxation. That such a state may sometimes exist is not impossible, nor even unlikely : but as we are altogether ignorant of the natural condition of these outlets, it is difficult to reason about the alterations to which they may be subject in disease. This hypo- thesis derives its chief support from the occasional efficacy of astringent substances (either apphed locally, or taken into the system) in checking the effusion of blood, when other remedies have failed. A more probable hypothesis perhaps is that which supposes some alteration in the consistence or composition of the blood itself; which thus becomes attenuated, and capable of passing through channels or orifices that healthy blood, under ordinary circumstances, cannot penetrate. In support of this supposition are adduced the facts that hemorrhages are known to occur where the blood is more thin, pale, and serous than common ; and still more remarkably where that fluid has undergone a demonstrable change in its chemical nature, or is even visibly altered in its sensible quahlies ; as, for example, in certain cases of purpura and sea-scurvy. And hemor- rhages of this kind are often cured by measures calculated to repair the blood ; to restore it to its natural condition by improvement in diet ; or by food of a pecuUar kind, as the juice of lemons. AVhatever may be the true explanation of the differences in question, there can be no doubt that they exist, and are often strongly pronounced in case of hemorrhage, wliich, inasmuch as they cannot be traced to any pre-existent local disease, we class together as idiopathic. And it will be worth while to run over the distinctive cha- racters of active and passive hemorrhage, as they are broadly and decidedly visible, in well-marked cases. JJctive hemorrhage (which is preceded, I repeat, by active congestion) occurs principally in persons who are young and robust, who live fully, and lead indolent lives, and are subject to the influence of those causes which tend to generate plethora. Occasionally the hemorrhage can be traced to some exciting cause, such as exposure to heai, strong mental emotion, violent exercise, or bodily efforts. More frequently, perhaps, no exciting cause is apparent. It is sometimes ushered in by a set of avmptoras expressive of what has been called the molimen hemorrhagicum. The IDIOPATHIC. 163 pafent experiences a general feeling of indisposition, with wandering and obscure pains that gradually settle in the part from which the blood is about to be discharged. A series of local symptoms, such as a sensation of weight, or of tension, or of heal and tingling, sometimes a slight degree of turgescence and redness, and a visible fullness of the larger veins, indicate the afflux o^ blood towards the labouring organ, and the parts in its vicinity : while chilliness, paleness, and shrinking of distant parts, and especially of the feet and hands, denote an opposite condition of the cir- culation in them. And to this state of things there often succeeds a general increase of heat, with a frequent pulse, — a pulse which is so characteristic sometimes, as to have acquired a name ; you may often hear or read of a hemorrhagic pulse. The blood, when at length it breaks forth, commonly escapes with rapidity ; is of a florid colour ; proceeds from a single organ ; and readily coagulates, though it seldom separates distinctly into serum and crassamentum. While it is flowing, the signs of local congestion diminish and disappear; warmth returns to the extremities, and the pulse regains its natural strength and frequency. The patient becomes conscious of a sensible relief; and feels stronger and more lively than before. This kind of hemorrhage is, in some sort, its own remedy ; it ceases in virtue of the discharge of a certain quantity of blood, and it is followed by morbid consequences only when that quantity has been excessive ; or when it inflicts some mechanical injury upon the parts along which the blood passes. I said that active hemorrhage is preceded by active congestion, and is consequently akin to inflammation. Perhaps it may be more true that in some of these cases we actually have the initial stage of mflammation, of which the hemorrhage proves the natural cure : strangling it in its birth ; applying that remedy, in the very moment when it is most efiective, which I told you, in the last lecture, was the most potent of all the remedies of inflammation : namely, loss of blood. Passive hemorrhage on the other hand is characterized by circumstances of an exactly contrary nature. It occurs in those who are naturally feeble, or who have been debilitated by disease, fatigue, insufficient nourishment, great evacuations, or the depressing passions. It is not, in general, announced by any precursory symp- toms, nor attended by any re-action. The effused blood is of a dark colour, serous, and but little disposed to coagulate : and it often is poured forth from several parts of the body at the same time. If the quantity lost be at all considerable, the natural debihty of the patient is rapidly augmented : his face becomes pale, and his body loses its heat. The hemorrhage leaves him in a worse condition than that in which it found him. The flow of a certain quantity of blood is not, as in the cases of active hemorrhage, suspensive of its further eff'usion ; frequently, indeed, passive hemor- rhage resists the means opposed to it, the more, in proportion as it has continued lono-er, or been more profuse. Hemorrhages of the kind I have now been describing — that is to say, depending upon no palpable disease of any organ, and, therefore, idiopathic — are of no uncom- mon occurrence, whether we regard the active or the passive form in which they appear : but by far the greater number of hemorrhages by exhalation are sympto rnatic ; that is, they result from some previous disease, either in the organ from which the blood proceeds, or in some other organ connected therewith by community or dependence of function. These secondary or symptomatic hemorrhages are preceded by congestion, but for the most part the congestion is not of the active, but of the mechanical kind ; and has more to do with the veins of the part than with the arteries. Thus we have hemorrhage from the bronchial membrane, in consequence of crude tubercular matter in the lungs, filling up a portion of the pulmonary tissue, and obstructing the circulation of the blood through it. This is an example of symp- tomatic hemorrhage by exhalation, depending upon previous disease in the organ itself from which the blood proceeds. In some of these cases the presence of pyrexia renders it probable that the hemoi rhage is the consequence and the relief of active congestion, provoked by tho irritation of tubercles ; rather than the result of a mechanical obstruction of tho circulation. 164 HEMORRHAGE. Again, we have hemorrhage into and from the lungs, as a consequence of -tuch disease of the heart as mechanically impedes the return of the blood from the lungs to that organ : a narrowing of the mitral orifice, for instance. Here the blood is barred up, as it were, in the lungs, till at length the capillaries, incapable of further distention, either give way, or become so dilated as to allow of the exit of the blood through their exhalant openings, or through inorganic pores in their sides. In pre- cisely the same way blood is poured out by the mucous membrane of the stomach and bowels, in consequence of disease in the liver, obstructing the portal circulation. These are examples of symptomatic hemorrhage by exhalation, depending upon previous disease, not of the organ itself from which the blood proceeds, but of ano- ther organ intimately connected with the former. When I say that hemorrhage into and from the lungs may result from such dis- ease of the heart as impHes an impediment to the circulation, you must not suppose that the lungs are the only channel through which the mechanical congestion can be relieved. Disease of the central moving organ of the circulation leads often, at length, to universal venous congestion : and the hemorrhage, which is apt to be the consequence of such congestion, may burst forth from any part where th^ veins are so overloaded. Hemorrhages from various portions of the mucous membranes are in truth very common effects of cardiac disease. The influence of mechanical congestion as a direct cause of hemorrhage is some- times very distinctly seen in the bodies of persons who have been hanged. You know that when suffocation has been produced by suddenly cutting off the access of air to the lungs, the right side of the heart, the great veins, and indeed the venous system generally, become loaded and distended with dark blood. Dr. Yelloly exa- mined the stomachs of five men who had been executed by hanging: he found them all exceedingly vascular ; and in two of the five cases, blood was actually extra va- sated, and adhering to the surface of the membrane ; there had been, in short, une- quivocal hemorrhage. There are several things, worthy of notice, in respect to hemorrhage by exhala- tion, of whatever kind. In the first place, it occurs much more frequently and readily from some tissues of the body than from others : and most especially of all, from mucous surfaces. Thus we have hemorrhage from the mucous membrane lining the nasal cavities ; from the pulmonary mucous membrane ; from the stomach and bowels ; from the urinary organs ; and from the uterus ; constituting distinct forms of disease, which we are, by and by, to investigate more particularly. Epistaxis, hfsmopfysis, hscma- (emcsis, melxna, liscmorrhois, hacviaturia, mcnorrhagia, are names descriptive of hemorrhage, as it is apt to occur from different parts of one or other of the three tracts of mucous membrane met with in the body: and 3'ou will find that these comprise very nearly all the complaints enumerated by nosological writers under the head of hemorrhage. Now this is a very remarkable fact : and very interesting questions arise out of it. Has it any relation to the manner in which these membranes, and the tissues subjacent to them, are supplied with a capillar}' circulation ? or may the fact be explained by the laxity of their attachment, which facilitates and favours the accu- mulation of blood in the vessels of the submucous tissue ? Or has the density or consistence of their natural exhalations any thing to do with this disposition to hemorrhage in the mucous membranes ? May we suppose that the vessels or orifices appointed to exhale mucus, afford a more easy passage to the blood than those which give egress to thinner fluids ; serum, for example, or the cutaneous perspiration ? Whatever answers may be given to these questions, you will do well to recollect the fact which has suggested them. Hemorrhages by exhalation are not, however, exclusively confined to mucous sur faces. They are fiable to occur, but much more rarely, from serous membranes. In the majority of cases, however, in which blood is found effused into any of the serous sars, it has either been an event of inflammation, or the blood has been poured out from an accidental openmg in some considerable vessel. Cutaneous hemorrhage is iLso \-ery rare; probably because the cuticle opposes a barrier to the exit of the USUAL SYMPTOMS. 165 blood : for the little red spots which characterize purpura are in fact hemorrhages, although the blood has not penetrated the epidermis. There are cases, however, as I mentioned before, in which blood has transpired, in a sort of dew, from the exter nal surface of the body. Another important general fact in respect to hemorrhages by exhalation is, that they proceed more frequently from certain parts of the mucous membranes than others, according to differences of age. Thus in children they are most common from the membrane that lines the nasal cavities : in youth from the mucous mem- brane of the lungs and bronchi ; in the middle years of hfe, and towards its decline, from the rectum, uterus, and urinary organs. I should add here, from the blood- vessels of the brain, in old age ; except that this, as I have already intimated, is not (speaking generally) hemorrhage by exhalation. Of course when I say that, in the instances specified, the blood is commonly poured out by exhalation, you will understand that the hemorrhage sometimes occurs from the laying open of a single vessel of some magnitude. Thus hemorrhage from the fauces may be the result of ulceration there, which has penetrated the coats of a vein or artery : hcemoptysis is occasionally produced by the laceration of a blood-vessel during the softening and expulsion of tubercles. Haematemesis some- times is the consequence of a breach made in a considerable blood-vessel during the progress of cancer of the stomach, or by the extension of small corroding ulcers ; hemorrhage from the bowels is no uncommon effect of ulceration, such as happens in fever, of the mucous follicles of the small intestine ; calculous matter in the Idd- neys will often lead to the rupture of some of the blood-vessels there, and to the discharge of blood by the urethra. Aneurisms also may burst into almost any part of the body. But events of this kind are unfrequent when compared with hemor* rhage from the same parts in the way of exhalation. In the head, however, the ratio is reversed. Blood does, sometimes, I believe, exude from the membranes of the brain, but much more commonly cerebral hemor- rhage is caused by the giving way of a diseased artery in the brain. How, in ail these cases, to distinguish whether the blood has oozed out by many orifices from a surface, or has escaped from a hole in the sides of a vein or artery, will form matter for future inquiry. Sometimes we can make the distinction, arid sometimes, it must be confessed, we cannot. You will readily understand that hemorrhage must vary greatly in respect to its importance, and to the danger which it impUes, according to the part from which it proceeds, and the circumstances under which the blood is poured out. It sometimes happens that death ensues from the mere loss of blood : either at once, by one pro- fuse bleeding, or more slowly, by repeated bleedings which we are unable to restrain : but this is comparatively rare, and when it does happen, the blood is generally found to have proceeded from one considerable vessel, which has been ruptured or eroded. The case approximates to traumatic hemorrhage, except that we cannot cut down upon and tie the injured vessel. Much more commonly danger arises from the presence and pressure of the extravasated blood in and upon internal parts ; upon the brain, for example, in cerebral hemorrhage ; in the lungs, in pulmonary. The symptoms, also, are hable to much variation in different cases. Even the diagnosis of hemorrhage is not always equally easy or certain. When the part into which the blood is directly poured communicates with the exterior of the body, the expulsion of some of that fluid will, generally, sooner or later demonstrate tht case to be one of hemorrhage. I say, generally, because cases have been known to occur, in which patients, previously in a state of great weakness, have died out- right, by syncope, from the mere extravasation of the blood, and before any of it made its way out of the body. The stomach and bowels have been found full o*" blood, when none had passed either by vomiting or by stool. And whun the blood does make its appearance outwardly, it is sometimes not easy to determine whethei it has come from a certain organ, or from the parts that lie between the same organ and the natural outlet by which it ultimately escapes. For instance, it is sometimes a matter of uncertainty whether the blood, in hematuria, proceeds from the kidneys, or the bladder, or the urethra. ] G6 HEMORRHAGE. The blood, itself, when it reaches the exterior, will generally be more fluid, and brighter, in proportion as it is effused in greater quantity, and nearer the surface : more in clots, and darker in colour, in proportion to the length of time that it has remained within the body after its escape from its proper vessels ; and this length of time may depend upon the smallness of the quantity of blood effused, and the consequent tolerance of the organs through which it may have passed ; or upon the actual space traversed. Respecting the colour, however, of the effused blood, 1 shall have some curious explanations to offer you when I come to speak of hematemesis as a disease. It would be superfluous to enter upon them now. If the site of the hemorrhage does not communicate with the external air, we are without that certainty which results from the actual spectacle of the blood. But in such cases we are much assisted by local disturbances of function, springing from the pressure upon, or the laceration or distension of, the suffering organ, or the parts contiguous to it. And we may derive good information from observing the indirect symptoms which declare themselves through the system at large ; many of which indirect symptoms are the same whether the blood reach the exterior or not. They principally vary according to the quantity of blood poured out, and to the rapidity of its effusion : and some difference will occur according to the age and strength of the patient. Some of these indirect symptoms have not always been imputed to their true cause. Paleness of the face, feebleness of the pulse, coldness of the extremities, and a tendency to syncope — symptoms which are apt to be connected with hemorrhage — have sometimes been ascribed to the alarm and sense of danger which the sight of the blood is calculated to produce in the mind of the patient. This may, to a certain exlent, be sometimes true ; but the explanation cannot apply to those cases in which the hemorrhage is strictly confined to the interior of the body, yet in which the symptoms just alluded to are often strongly marked. They //len depend — and probably in all cases they chifjiy depend — upon the actual abstraction of the blood from the circulation. The management of individual cases of hemorrhage must be mainly regulated b}' the particular circumstances under which they occur. The few observations that I have at present to make respecting their treatment cannot be otherwise than very general. But a preliminary question, of some importance, presents itself. Is it in all cases of hemorrhage proper, or safe, to attempt to stop the bleeding ? Without going into detail, it may, I think, be laid down as a rule, that what 1 have called habitual hemorrhages ought not to be interfered with, so long as they have no perceptible injurious influence upon the health, and so long as they proceed (as they mostly do) from parts of which the structure is not likely to be spoiled, nor the function impaired, by the repeated passages of the blood. The most common seat of these habitual hemorrhages I have stated to be the rectum ; to which the two conditions just mentioned are, fortunately, both of them applicable. Epista:xis supplies a less frequent example of the same kind. When they deviate from their usual channel, and are transferred (as it were) to some more important organ, it will generally be right, among other remedial measures, to endeavour to recall the original hemorrhage. It is very seldom that the metastasis takes place^br the better. — i. e,, from a part where the bleeding is attended with danger, to one where it is comparatively harmless. However, when these habitual hemorrhages happen, as they often do, in plethoric persons ; and when they are urged and kept up, as they frequently are, by intem- perate and luxurious habits ; we ought not to content ourselves with merely looking on. Hemorrhois often performs the office of a safety-valve in such persons ; and there are many who have what are called bleeding piles, and Avho would rather continue to have them, than to submit to any change in their mode of hfe, or to the employment of other means of evacuation. Certainly these are cases in which nothing should be done to stop the bleeding; yet such patients ought to be told that the hemorrhoidal discharge is but a precarious, and often an inadequate relief of the plethora : that while the plethora is suffered .0 exist there is danger of a cessation TREATx>IENT. 167 of the piles, and of the supervention of serious or fatal affections 6f other parts, and especially of the head. Apoplexy, or cerebral hemorrhage, has frequently been known to follow hard upon the suspension of constitutional hemorrhois. The patient should be admonished also that the discharge of blood from the vessels of the rectum may become excessive ; that if it be aggravated by exercise, or in any other way, it may lead to inflammation about the anus, and to great inconvenience ; and that there are safe and tolerably sure methods of getting rid of the plethora ; (which IS what chiefly constitutes the danger of such cases), if they will submit to the ob- servance of them. It is in the intervals between the hemorrhages that the danger of which they are in some sort the token, may best be met. Again, it will seldom be proper to employ direct expedients for staunching the flow of blood, in the small class of active idiopathic hemorrhages; unless the quantity lost is so great as to endanger the safety of the patient. Such hemor- rhages have commonly a tendency to cure themselves, by relieving the general plethora, or the local congestion, on which they depend. For these hemorrhages, which bear so strong an analogy to inflammation, the treatment of inflammation may often be requisite, as an indirect mode in which their amount may be mode- rated, and their recurrence obviated. With these exceptions, both direct and indirect measures are to be used, for arresting the effusion of blood as speedily as may be. To this end the patient is to be surrounded as much as possible with cool fresh air, and kept in a state of absolute quiet. All motion of the body, and emotion of the mind, all kinds of stimulating food and drink, every thing, in short, which has a tendency to hurry the circulation, should be diligently avoided ; and that position of the body should be chosen which is the least favourable to the afflux of blood towards the part affected. The horizontal posture will be proper in hemorrhage from the bowels, the uterus, or the urinary organs. In epistaxis, and in cerebral hemorrhage, the head should be raised. In two words, the antiphlogistic regimen should be strictly enjoined in all cases of hemorrhage sufficiently severe to require medical assistance. Of the actual remedies used for checking the further escape of the blood, one of the most important has already been alluded to — I mean venesection. Herein we are guilty of homoeopathy ; to prevent bleeding, we draw blood. After what was stated respecting the use of blood-letting in inflammation, I need not dwell upon the objects aimed at by this measure : they are, briefly, to abate the vigour and force of the heart's contraction, to lessen general plethora when it exists, to remove local congestion, and to divert the current of the blood from the suffering organ. The method, and the amount, and the repetition of the blood-letting, must of course be regulated by the circumstances of each particular case. And the same objects may sometimes be efTected by other modes of general depletion, especially by the use of purgative medicines. Another important remedy for inward bleedings is mercury. Whatever may be the modus operandi of that mineral, the fact is certain, that hemorrhage, which had resisted other modes of treatment, has, in very numerous instances, ceased at once upon the occurrence of a moderate degree of salivation. Next to blood-letting and mercury, astringents constitute the great resource against actually existing hemorrhage : and among these, cold is one of the chief. It may be placed in direct contact with the bleeding surface: as when ice is swallowed to restrain hematemesis ; or cold water injected into the rectum in excessive and exhausting hemorrhois ; or into the vagina, in flooding from the uterus. Or it may be applied to the surface of the body, as near as possible to the seat of the hemor- rhage ; as to the nose and forehead in epistaxis ; to the chest in hemoptysis ; to the epigastrium in hemorrhage from the stomach ; to the lower part of the abdomen or to the perineum in hemorrhage from the intestines, uterus, or urinary organs. But the influence of coid in eonstringing the smaller vessels is not confined to the part with which it is m contact ; it wall stop hemorrhage by the sympathetic shrinking which it produces in distant parts. Epistaxis, for example, has often been arresteti by the sudden apposition of cold water to the neck, back, or genital organs. Tb«' 168 DROPSV nursery remedy consists in slipping a cold key down the back between the clothes and the skin. Of the mischievous power even of cold in this way we have continual illustration in the suppression of the catamenia by cold and wet accidentally apphed to the feet. There is a long catalogue of medicinal substances which are esteemed to possess more or less of a specific virtue, when taken internally, in checking the flow of blood. Most of these are of an astringent nature, and some of them are eminently useful. The acetate of lead enjoys, in this country, a higher character, perhaps, than any other of these substances. Many vegetable matters, and some artificial compounds, frequently employed in internal hemorrhage, seem to owe their astringent and styptic properties to the gaUic acid which enters into their composition. Such are the rhatany root, uva ursi, bistort, tormentil, the pomegranate, kino, catechu, the several preparations of gall nuts, and the nostrum called RuspinVs styptic. The power of arresting internal hemorrhage has also been confidently ascribed, by different persons, to nitre given in large doses, to the mineral acids, to the muriated tincture of iron, to alum, to the oil of turpentine, to the secale cornutum or spurred rye, and to various other substances, a more particular account of the rules and indi- cations for administering which, I may return to, when I have to speak of individual hemorrhaofes. LECTURE XVI. Dropsy : its General Pathology. Passive Dropsy ; Cardiac and Renal. Active Acute, or Febrile Dropsy. Prognosis ; and General Principles of Treattnent in Dropsies. There remains now only one subject, of the patholog}' of which it will be con- venient and, I hope, instructive, to take a short general view, before we enter upon the consideration of special diseases. I proceed to speak of dropsies : by which I mean collections of serous liquid in one or more of the shut cavities of the body, or in the areolar tissue, or in both, independent of inflammation. We have already considered serous effusion as occurring as an effect or event of inflammation. We are commonly able to say of this, that it has originated in inflam- mation ; either from its being mixed with some of the less equivocal products of that disease, such as coagulable lymph ; or from its having taken place while symptoms of inflammation existed. But there are numerous examples of serous accumulation, which cannot wiih any show of reason be regarded as events of inflammation. It is to these that I would apply the simple term dropsy. It has been said — and said with much truth — that dropsy is rather a symptom of disease, than a disease in itself. And it has been affirmed that it Avould be more philosoj)hical and scientific to treat of the original malady upon which the effusion or accumulation depends ; to erase dropsy from the list of substantive diseases, and to place it in the catalogue of mere symptoms. But this, in my mind, is a very mistaken view of the matter. For, first, it is oftentimes uncertain, while the patient is yet alive, what or where the primary dis- ease may be ; and even after death we sometimes can discover no organic change that would satisfactorily account for the effusion. Practically speaking, in such cases the dropsy is the disease, and the sole object of our treatment. And, secondly, dropsy is, in fact, to a medical eye, in all cases, something more than an effect or symptom of disease. The imprisoned liquid is often a cause of various other symptoms ; embarrassing, by its pressure, important functions, and even extinguishing fife. The removal of the dropsy (although its original cause, of which it was a symptom, may remain behind, untouched, to be again productive of pffusion under circumstances favourable to its operation) — the removal of the dropsy DROPSY. l()d will often restore a person to comparative comfort ; or even to what, so far as his sensations, and powers, and belief are concerned, is, to him, for the time, a state of health. You see then, already, that in a dropsical person, whose dropsy depends upon organic disease, there are two sets of symptoms to be distinguished : viz., those which depend on the primary disease ; and those which depend on the collected fluid. The latter, often the most grievous, are often to be got rid of: the former, frequently permanent, are frequently also but httle complained of or felt by the patient, except when effusion is the result. Some persons, I fancy, have regarded dropsy as a less attractive subject of inves- tigation than it might be if it were less frequently, in its nature, incurable. But as far as the dropsy itself is concerned, the complaint often is curable ; and there are some forms of dropsy that are curable in a more absolute sense ; that is, both the effusion, and that condition which was the physical cause of the effusion, are some- times remediable. Besides, it is our business to cure when we can ; but whether we can cure or not, to relieve and palliate human suffering ; and this, under Providence, we are able to do, in many or most cases of dropsy, to a very considerable extent. Wherever there is a shut sac, or wherever there is loose and permeable areolar tissue, there we may have dropsy. Thus there may be dropsy of the ventricles of the brain, or of the meshes of the pia mater, leading to death by coma ; of the pleurse, of the areolar texture of the lungs, or of the submucous areolar tissue of the glottis, any of which may cause death by apnoea; of the pericardium, producing death by syncope. I mention these instances in particular, to show that almost every mode of dying may result from dropsical effusion ; and to win your attention to a disorder so full of peril. When the cerebral ventricles are distended with water, we express the diseased condition by the term hydrocephalus. When serous liquid collects in the pleurae, or in the pericardium, we say that the patient has hydrofhorax, or hydropericar- dium. If the cavity of the peritoneum be the seat of the effusion, we call the com- plaint ascites. When the areolar tissue of a part becomes infiltered with serous fluid, the part is said to be cedematous ; and anasarca is the name given to the more or less general accumulation of serum into the areolar tissue throughout the body, and especially to visible subcutaneous cedema of considerable extent. Finally, the term general dropsy signifies the combination of anasarca with dropsy of one or more of the large serous cavities. Other local dropsies indeed there are, but, as they belong entirely to surgery, I need not emunerate them. Now what reasonable account can be given of these remarkable conditions ? How is it that the hollows and interstices of the Hving body, or of parts of the body, become thus water-logged ? To solve this question, we must carry in our minds some physiological recol- lections. The closed cavities, or the interstitial tissues, within which the fluid of dropsy is confined, are kept moist, during life and health, by a continual serous secretion from their surfaces : and they are kept merely moist, for the fluid thus constantly secreted is as constantly reabsorbed into the circulation. When these tissues or cavities, without having undergone inflammation, become filled and distended with the serous fluid which they habitually secrete, one of three things must have happened. Either the quantity of fluid exhaled has been aug- mented, the absorption remaining the same ; or the absorption has been diminished, the exhalation continuing the same ; or else the exhalation has been increased, while at the same time the absorption was either lessened or not proportionallv increased. The last is a mixed case ; and we need only consider the two others. Now the balance between exhalation and absorption is often deranged, and dropsie>kly unload themselves, and resume their natural bulk and symmetry. His friends congratulate him, and each other, that his disease is leaving him ; but as his legs are emptying, he becomes drowsy, forgetful, comatose, apoplectic ; and after his death we find the ventricles of the brain distended with serous fluid. Or the dropsical accumulation may be transferred from its place through a safer channel. The best instance of this that occurs to my recollection I heard related by Dr. Farre. A gouty individual had hydrocele ; dropsy of the tunica vaginalis. After the disease had lasted for some time he got very drunk one evening, with rack punch, which greatly disordered his alimentary canal, and brought on a kind of cholera. He had profuse vomiting and purging, which quite exhausted him : and at length he fell asleep. When he awoke in the morning he found that his hydrocele, which had been a large one, was gone : and it never returned. Such an accidental cure is most instructive. If Avater be injected, in some quantity, into the blood-vessels of a living animal, the animal soon perishes; dying generally by coma, or by suffocation : and when the carcass is examined, the lungs are found to be charged with serous Hquid, or water is discovered in the areolar tissue of some other part, or in the shut serous membranes. If, however, the animal be first bled, and then a quantity of water be injected equal to the quantity of blood abstracted, the injection is followed by no seri- ous consequences. Facts like these throw, as it seems to me, a strong light upon a confessedly obscure part of pathology. It appears that under various circumstances the blood-vessels may receive a considerable and unwonted accession of watery fluid ; and that they are very prone to get rid of the redundance. When they empty themselves through some free surface, their preternatural distension is relieved by a flux. If, on the other hand, the surface be that of a shut sac, in discharging their superfluity they cause a dropsy. Why sometimes this organ, and sometimes that, is selected as the channel by which the superabundant water shall be thrown out of the vessels, vve can seldom tell. We often find it difficuk to determine which of the two facts in question is to be considered the antecedent, and which the consequent. For not only is it true that when the blood-vessels become overloaded with serous fluid, they rea- dily deposit a part of it : but also that M^hen they are in the opposite condition of comparative emptiness, when the}'^ contain less blood than is natural, they are equally ready to replenish themselves by absorbing fluids from any source to which they car find access. In the case of the man who was cured of his hydrocele upon the oc currence of profuse watery discharges from the stomach and bowels, it seems cleai that the expenditure of serous liquid from one part led to its absorption into the blood from another. When anasarca suddenly leaves the extremities, and fatal coma fol- lows, it appears probable that the absorption is the first of the changes, and the efliision the second : and had this eflrision been determined to the mucous membrane of the intestines, to the skin, or to the kidneys, it would have brought relief and safety to the patient, instead of causing his death. We have obtained, then, a glimpse of one or two most important principles in respect to the pathology of dropsy. The blood-vessels, when preternaturally full of aqueous fluid, have a strong tendency to empty themselves : when preternaturally prapty, they readily drink up watery fluid wherever they come in contact with 't 176 DROPSY. From the discharge of their superfluity of water arises a dropsy or a flux. The cause and the cure of many dropsies lie in these propositions. The apphcation of these principles to the supposed case of active dropsy must be obvious. No doubt, in some such cases, actual inflammation takes place ; but in many of them there is merely the dropsical effusion, without any other trace or evi- dence of inflammatory action. The two facts which it chiefly concerns us to remark fire these — first, that the aqueous portion of the blood which in health is habitually carried off to a very considerable amount by the skin, is suddenly diverted from that tissue ; the perspiration, sensible and insensible, is suppressed : and secondly, that the areolar tissue, or the large serous bags, or both, become filled with serosity. It is not by any necessity, however, that the vicarious excretion is turned upon these serous surfaces. In truth, the intercepted perspiration more often escapes, or labours to escape, from some free surface ; and then we have, not a dropsy, but a flux. Diarrhoea, for example, is more common, under the supposed circumstances, than anasarca or ascites : apparently because there is a closer analogy of structure, and a more direct consent or agreement in function, and a stronger reciprocal influence, be- tween the skin and the mucous membrane of the alimentary canal, than between the skin and the serous tissues. Brief allusion has been made to a large class of chronic dropsies, connected with and dependent upon a peculiar renal disease. This important species of dropsy will require a detailed examination hereafter. It is more complex, and of more obscure pathology, perhaps, than cardiac dropsy. It certainly has a more direct relation also to what I have just been describing as active dropsy : of which it may almost be regarded as the chronic form. Sometimes the kidney disease, of which the dropsy is an incidental and not an essential symptom, springs up silently and without obvi- ous cause. Sometimes it may distinctly be traced back to its origin in an attack of acute dropsy : in which complaint the kidney always and manifestly labours, its functions being violently deranged, and the urine being smaU in quantity, and mixed with blood. In this chronic and renal dropsy, the watery accumulation is accounted for by the deficient excretion through the customary channels. The blood-vessels deposit that excretion in a wrong place. The urine, in the outset of the dropsy at least, is scanty. The skin is almost always dry, harsh, and unperspiring. The anasarca usually increases or decreases, as the quantity of urine diminishes or augments Remarkable alterations take place also in the qualities and composition of the urine itself: it has a very low specific gravity, contains albumen, and is deficient in urea. The blood degenerates too ; and other organs of the body, and especially the heart, are apt to fall into disease. The suppression of perspiration, and the appearance in the urine of blood or serum, unchanged by the secerning power of the kidney, form striking links of connection between acute and renal dropsy. In the sketch that I have been endeavouring to give you of the pathology of dropsy, I have taken extreme cases to elucidate the two varieties of that disease which have been respectively denominated active and passive. Let me once more present to you, in a summary view, the points of resemblance, and the points of distinction between them. They resemble each other in the result ; namely, in the collection of serous liquid m the circumscribed cavities and vacuities of the body. They differ in the rate at which the collection augments. In the well-marked acute dropsies the liquid is rapidly effused, in quantity much beyond the natural amou-nt of exhalation. In the well-marked passive dropsies the exhalation goes on as usual, but the fluid exhaled is not taken back again into the circulating vessels with sufficient facility. In the one case the circulation is dis- •.urbed and tumukuous ; in the other, it remains truhquil. It is probable that in tht more acute forms, the serum transudes through the coats of the arteries, or of the capillary vessels next adjacent to the arteries. In the completely chronic and cai- diac forms, there is a defect of absorption by the veins. Active dropsies arc DROPSY. 177 sometimes spoken of as belonging to the left side of the heart ; passive dropsies lo the right. But there are intermediate degrees, in which the full veins are not only unable to admit anj?- addition of aqueous Kquid, but also to retain that which they already hold ; and serosity gradually exudes through their parietes. What connects all these forms of dropsy is a preternatural fullness in some part, or the whole of the hydraulic machine. And this seems to be the grand key to the entire pathology, as well as to the remedial management of the disease. I scarcely need point out to you the fact, that the water of dropsy is liable to change its place, in obedience to the force of gravity. In general ansarca, when the serous accumulation slowly augments, it first becomes visible about the feet and ankles. There are two causes for this : the one occasional in its operation, the other general. The veins of the lower extremities are apt, when the patient is erect, to be more turgid than other veins ; for unless the action of their valves be quite per- fect, those vessels sustain the weight of a large superincumbent column of blood, which concurs with other causes to retard the upward current, and to keep the depending capillaries unduly full. Under such circumstances the effusion, or the arrest of absorption, may take place around the insteps earlier than in any other part. But in general it is not so. In most cases, the truer and simpler reason of the ear- lier manifestation of dropsical swelling about the ankles, is merely that the serous liquid which fails to be removed from the areolar tissue in all parts of the body, gravitates towards the lowest part ; and being thus collected into a comparatively small space, is rendered more perceptible. During the night, when the horizontal posture is maintained for several hours, the fcdema of the ankles disappears, but the neck and face, perhaps, become bloated and puffy. And it is obvious why, in these cases, the feet, towards evening, swell more than the hands. The hands receive the serous fluid from the areolar tissue of the arms alone ; the feet, that which sinks down, not only from the legs and thighs, but from the head and trunk also. The limbs may be looked upon as bags, which fill up in proportion to the quantity of liquid detained. And the lungs are similarly bags : and in these cases we com- monly may hear the crepitation of pulmonary cedema in their lowermost portions. I mentioned an instance in which one-half only of the body was anasarcous, and that the upper half. The descent of the dropsical fluid was prevented by the dress of the patient ; the waistband of his trowsers having compressed the areolar tissue through which alone the gravitating hquid could seek a passage. So sometimes, it is stopped at a lower point of its descent by tight garters, and the thighs swell ear- lier than the insteps. It is not at all uncommon to see persons who, in the daytimef at least, and in the erect posture, are anasarcous in the lower half only of the body. We do not so often meet with anasarca of one moiety of the body, the division being made by an imaginary plane drawn through its axis. Yet this does occasionally happen. This curious phenomenon is usually the result of a mere accident, the anasarcous patient being unable to leave his bed, or to lie at all, except on one side ; and then the accumulating liquid gravitates to that side. I have, however, seen one case to which this explanation would not apply. I believe that some local obstruc- tion to a large vein in the neighbourhood of the shoulder caused oedema there, and (he fluid sank down and filled the areolar tissue of that side alone. As the man recovered, I had no means of verifying the truth of this conjecture. Cfeferis paribus those parts of the body become the most loaded with serous fluid and show the anasarca the plainest, of which the areolar tissue is plentiful and loose ; as the eyelids, and the scrotum. But in extreme cases the liquid pervades the same tissue, where it is much more dense and compact : as where, for example, it is sub- jacent to mucous membranes. In the examination of a dropsical corpse, the mucous coat of the intestines may sometimes be seen to be elevated by the water co-Uected beneath it. It then looks hke jelly, and the valvulas conniventes, which are flat and thin in their ordinary state, become round and convex. Dropsy of the submucou.s 'issue of the air-passages is frequently a cause of death. Many persons seem disposed to ascribe these anasarcous swellings, espenallv 12 178 DROPSY. when they make their appearance suddenly, to inflammation ; and much is said about the frequency of injjammalory dropsy. But the facts we have just been cjusidfring sufficiently refute this theory. If the serous liquid be the product of mflammation, what is the part inflamed ? It cannot be, as some appear to think, the distended areolar tissue itself; for if so, the inflammation must shift its quarters under the influence of gravity. The term inflammatory dropsy may not, perhaps, be inde- fensible when applied to that class of dropsical affections that have been spoken of under the head of active dropsy. I am far from denying- the frequent agency of inflammation in producing changes which, in their turn, lead to dropsy, but we shall do well not to confound those collections of serum mixed with blood or with coagu- lable lymph, w'hich are distinctly events or products of inflammation, with other collections of serum which resemble the former in that respect only, but differ entirely from them in everj^ other particular. To the class denominated active, which occur suddenly, from defect of some one or more of the usual channels of aqueous excretion, and which are usually attended with much disturbance of the whole system, the epithetyi'^nVe Avould not be inappropriate. There may be some few cases in which it is impossible to determine whether the effusion be inflammatory in its origin or not. If the serum be turbid, if we can discover in it the smallest ad- mixture of pus, or of flakes of lymph, or if the disease has been marked by the ordi- nary signs of internal inflammation, we need not hesitate in our opinion. One of the latest systematic writers on dropsy in this country holds that all dropsies are more or less inflammatory. We can see one reason for this mistake (for a mistake it surely is) in the relief and amendment which often ensue upon the employment of blood-letting in dropsy. The oenexaX prognosis in this disease may be readily gathered from what I have said of its causes and conditions. The anasarca which occurs in chlorotic young women is the least perilous, and the most curable. Of the rest, febrile dropsies are more obedient to treatment, and oftcner admit of complete recovery, than the passive or chronic. Local dropsies are to be regarded w^ith hope, in proportion as the obstruction on which they depend is capable of being removed, or compensated by the development of fresh channels for the delayed blood. As far as the mere water is concerned in the chronic forms of the disease, cardiac dropsies are more readily dispersed for a time, but more likely also to return, than dropsies which are compli- cated with renal disease. It is obvious also that the immediate danger of dropsical accumulations will depend much upon the place the liquid may occupy. The dif- ference in this respect is immense between the tunica vaginalis, and the peiicar- dium; between the areolar tissue of a limb, and that which lies beneath the mucous membrane of the glottis. It remains that I should ofl^er a very few final remarks concerning the principles upon which dropsies are to be treated. The first object is to get rid of the preternatural accumulation of watery fluid : the second is to prevent its collecting again ; in other words, to remedy the diseased conditions which gave rise to the dropsy. Indeed, if we can accomplish this second object without delay, the dropsy will generally disappear of its own accord. Now venesection will often sensibly reduce the dropsical swelling. In what has been called active or febrile anasarca, general blood-letting is advantageous in several ways. It helps to relieve the congestion, akin to inflammation, upon w'hich the effusion depends : it tends to abate the undue action of the heart : and by emptying the blood-vessels, it facilitates the re-absorption of the effused liquid, and its ultimate ejection from the system. But although blood-letting is the most direct and certain way of unburdening the loaded veins, and therefore, in many instances, the most efl^ectual remedy for the dropsy, it is by no means adapted to all, nor even to many, forms of the malady. It will always, indeed, remove a portion of the aqueous ingredient of the blood, but it expends at the same time its fibrin and its red particles. It impoverishes the circu- lating fluid, and thus enleebles the patient more than would the indirect measures, to be mentioned pre-^f'ntly, for evacuating the collected liquid. Perhaps, by rendering the blood more watery, venesection may indirectly favour the transuding of its serum TREATMENT. 179 outwards whenever the venous current happens to be retarded. It certainly weakens the central organ of the circulation : and to muscular debility of the heart we have already seen that certain forms of general dropsy may owe their origin ; and thus it is that ill-timed or excessive bleeding may be the cause of dropsy. In these forms of anasarca, instead of robbing the veins of their blood, we seek to repair the quality and richness of that fluid, and so to restore the deficient tone and vigour of all the muscles, and of the heart among the rest. In many cases, then, it is inexpedient to let blood ; and we endeavour to empty the vessels indirectly, and in such a manner as to withdraw from them the more watery parts only of their contents. In other words, it becomes our object to aucr- ment the discharge of watery fluid from one or more of the secreting surfaces of the body : but it must not be the inner surface of a shut sac. I noticed before the close analogy that obtains between dropsies and fluxes. Dropsy is a flux into a closed cavity. Fluxes would be dropsies if the fluid poured forth did not escape. And^you are to observe that we frequently try to cure a dropsy by pro- ducing a flux. By what surface or channel this artificial drain shall be attempted, is often a matter of gteat nicety and importance. In some cases we strive to promote the discharge of the superabundant water by the way of the kidneys ; in others, by the mucous hning of the aUmentary canal : in others, by the external skin. The cir- cumstances by which our choice must be determined will come under review here- after. Passive dropsies are much more difficult of cure than active, and will often baffle our best directed efl!brts. You are not, however, to regard those passive dropsies which depend upon the obliteration of a large vein as necessarily incurable ; for if a collateral venous circulation be accomplished, the drops}?- will permanently disap- pear. But we must give nature the credit of the cure in such cases. Time is the best remedy ; and all that we can sometimes do is to alleviate in the meanwhile the most distressing or threatening of the symptoms. I mentioned, in the outset of the lecture, that the presence of the dropsical fluid may constitute nearly all the sufl^ering of the patient, as well as much of his danger. Now, when we cannot get rid of the water by bleeding, or by internal remedies which excite serous discharges, we may often afford great present comfort to our patient, and prolong his days, by letting the water out by a slight mechanical opera- tion. Paracentesis is the scientific, and tapping the vulgar name, for this proceed- ing. It has been performed successfully, by means of a small trocar, to evacuate the water from the brain in chronic hydrocephalus ; it is often resorted to for the purpose of emptying the peritoneal cavity, and the tunica vaginalis testis ; and it is not seldom practised to let out the fluid of anasarca ; for acupuncture of the legs and thighs and scrotum, is only another form of tapping. In the local variety of dropsy that is called hydrocele, the re-accumulation of the liquid is sometimes prevented by exciting just so much inflammation of the mem- brane as may cause its opposite surfaces to cohere ; whereby the cavity itself being abolished, any return of the disease is rendered impossible. This is an expedient which we do not dare to employ in other species of dropsy ; in ascites, for example : first, because the inflammation itself would place the patient's existence in imminent peril ; and secondly, because if it could be safely conducted, the adhesion and obliteration would seriously embarrass and impede the functions of important organs. The circumstances which require and justify this mechanical remedy ; the rule^j and precautions to be observed in its performance ; and the measures to be adopted for preventing the recurrence of the accumulation, by the removal of its efficient cause, will all be considered in detail when we come to treat of the special forms of dropsy. 180 DISEASES OF THE EYE. LECTURE XVII. Diseases of the Eye. Catarrhal Ophthalmia. Purulent Ophthalmia of Adults. Having brought my observations on general patholog}' to a close, I next proceed to the consideration of individual diseases ; and I shall take them up, one by one, in that anatomical order to which I adverted in the introductory lecture of this course. That is to say, I shair go a capite ad calcem: interpolating those disorders which, although they have a name, have as yet no ascertained local habitation, wherever it may seem most convenient to introduce them. I mentioned before one advantage, as it seems to me, of bringing together, in juxtaposition, all the diseased conditions to which the same part, or the same neighbourhood, of the body is liable — namely, the facility thus afforded of comparing the phenomena by which they are characterized, and of discriminating one disorder from another. . In taking the parts in succession from the head downwards, we adopt a sort of order, definite enough for the purpose of aiding tlie memory, and yet free from the trammels which belong to all attempts at arranging diseases according to their essential nature and affinities. I propose then to speak, in the first place, of certain diseases of the organ of vision. Diseases of the eye occupy a sort of neutral ground, upon which the sur- geon and the physician may both lawfully enter. For some of them there are no means of relief but in manual operations of the most delicate kind. On the other hand, many of the internal parts of the eye require, when diseased, exactly the same species of general treatment which the physician adopts in diseases of other internal parts. We seek to change the condition of a small portion of the body, by remedies which act upon and through the system at large. My real and only motive, however, for beginning with a few of the numerous morbid states to which this little part is liable, is this : — that we find, in the eye, more satisfactory and plain illustrations of the general facts and doctrines of pathology, as I have been endeavouring to set them before you, than in any other single organ of the body. " Here" (to use the words of Dr. Latham, in his little volume on Clinical Medicine — a book which I strongly recommend j-ou to study) " here you see almost all diseases in miniature : and from the peculiar structure of the eye, you see them as through a glass ; and you learn many of the little wonderful details in the nature of morbid processes, which but for the observation of them in the eye would not have been known at all." "Within the small compass of the visual apparatus," says Mr, Lawrence, "we meec with a greater variety of structures than in any other part of the body. Indeed the eye, with its appendages, exhibits specimens of every one of the animal tissues. We find in it bone, cellular and adipose substance, and blood-vessels; mucous, fibrous, and serous membranes ; the conjunctiva exemplifying the first ; the sclero- tica, the sheath of the optic nerve, and the lining of the orbit, the second ; the sur- faces containing the aqueous humour, the third : muscular, nervous and glandular parts ; common integument and hairs. Besides these, it contains several tissues of peculiar nature, to which there is nothing strictly analogous in other parts." The eye itself, taking it apart from its appendages, the spheroidal eyeball itself, is scarcely an inch in its longest diameter. Yet it seldom happens that disease, of any kind, occupies the whole, even of this small space, at once. Inflammation, for exam- ple, is often confined to one of the tunics of the eye, external or internal ; and wher it affects more, it is usually in consequence of the extension of the inflammatory pro- cess, from some one texture in which it took its rise. You will not expect me tc treat of the vast number of disorders to which the several parts of the eye are liable. I shall bring, I repeat, a few of them only under your notice ; and I shall select ihose concerning which the physician is most frequently consulted ; Avhich every one, whatever brancn of the profession he may follow, ought to be competent tc treat; and, more particularly, which are calculated to elucidate other diseases, and, above all, other internal diseases, that are iipuedly assigned to the care of the phy CATARRHAL OPHTHALMIA. 164^ sician. With the anatomy and physiology of the organ, I may take for granted that you are already acquainted. I will first briefly inquire into the inflammatory affections of what may be consi- dered the mucous membrane of the eye. Like other mucous membranes, it forms a surface communicating with the external air. Some of these affections are yery trifling : some are very severe. There is a mild form of inflammation of the conjunctiva, which constitutes the most common disease of the eye to which adults are subject. It results, in most cases, from vicissitudes of temperature ; or from certain conditions, or sudden varia- tions, of the atmosphere. It is very apt to be excited by exposure to a stream or draft of air, especially in the night, and during sleep. It has a strong analogy — indeed it is the same disease, except in situation — with that moderate degree of inflammation, produced by the action of the same causes, in the mucous membrane of the nasal cavities, the throat, and the bronchi, which in common parlance we style a cold in the head, or in the chest, as the case may be : and accordingly that inflammation of the conjunctiva of which I speak is often called by the unlearned, a cold in the eye: and the same analogy is expressed in its technical appellation : the cold in the head or chest is termed by nosologists a catarrh; and the cold in the eye. of the vulgar, is, with them, catarrhal ophthalmia. The suddenness (sometimes) of its accession has procured for it also the denomination of a blight in the eye. The term ophthalmia is at present used to denote inflammation of the eye gene- rally ; it conveniently expresses in one word what would otherwise require more. Formerly, when the diseases of the eye were not so well understood in this country as they are at present, almost all the inflammatory conditions to which that organ is subject, were lumped together under the common appellation of ophthalmia, or the ophthalmia. That word now requires some epithet to distinguish the seat or the kind of inflammation that is meant. It can scarcely be otherwise than interesting to mark the phenomena which occur in catarrhal ophthalmia, when we know that in its cause and nature, it is the same with inflammation of a similar surface, in parts which we cannot so well inspect as we can the conjunctiva. This membrane, as you know, hues the eyehds, and covers about a third part of the globe of the eye anteriorly. The inflammation, in catarrhal ophthalmia, is confined to the conjunctiva and the meibomian follicles. Its leading symptoms are redness of the surface of the ej^e ; some pain and uneasiness there ; an increased discharge from the affected membrane and the follicles : and a stick- ing together of the eyelashes and lids. The redness is worth notice, both in respect to its tint, and to the arrangement of the vessels in which it appears. It is superficial, and of a bright scarlet colour; and usually irregular, or diffliscd in patches, some fasciculi of vessels being more distended than others. When, however, the inflammation is more intense, the whole surface, except that of the cornea, becomes of a scarlet red. The vessels of the conjunctiva, thus rendered visible by inflammation, anastomose continually with each other, and form a network, which can be slipped and dragged about over the subjacent surface by moving the eyelids with the finger. Frequently some of the meshes of this network are filled up with little patches of extravasated blood ; the eye is what is called blood-shot, or, to speak learnedly, there is ecchymosis ; and sometimes all distinction of separate vessels is nearly lost. In the commencement of the complaint the redness is confined to that part of the conjunctiva which lines the lids ; and it afterwards advances gradually, from the angle where it is reflected over the eyeball, towards the cornea. Now all these particulars are of consequence, since they are diagnostic of the seat of the disease ; and to show this I must mention, by anticipation, the appearance and the arrangement of vessels that are observed when inflammation affects some of the textures which lie deeper than the conjunctiva, and especially the sclerotica The sclerotic redness is seen through the conjunctiva. It is of quite a different tint from that of the conjunctiva. Instead of showing a blight scarlet colour, it is pink, or sometimes of a slight violet hue. The vessels are much smaller and finer than those belonging to the conjunctiva, like hairs. They are straight also, and arranger? Q 182 DISEASES OF THE EYE. regularly, after the manner of radii in a circle. They lie in the sclerotic, round the cornea, like what is called by painters a glor}% or like a halo, or zone surrounding the central cornea; and they cannot be made to shift tlicir place by any dragging of the lids. These are very important distinctions. They are such as are easily recognized when two eyes are examined in which the two membranes in question are separately inflamed and vascular; and they are still more palpable, perhaps, ■when both membranes are simultaneously inflamed, as they often are, in the same eye. Then, unless the conjunctiva is so universally red as to prevent our seeing the sclerotica through it, the contrast between the larger, more tortuous, scarlet, and reticular vessels of the conjunctiva, and the fine, straight, rose-coloured, radiating vessels of the sclerotic, is exceedingly striking ; and those of the conjunctiva, which lie naked on the loose mucous membrane, admit of being slipped about over the fixed zone of vascularity which is presented by those of the fibrous tunic. The pain which attends catarrhal ophthalmia is slight and trifling. At the outset there is generally some uneasiness when the eye is exposed to the light ; but there is no intolerance of light when the disease is fairly developed. The patient com- plains rather of a sensation of stiffliess and dryness, and feels as though there were some foreign substance in the eye, between the globe and the lids, especially when the eye is moved ; a grain of sand, or gravel, or a little fly. So exact is the resem- blance of this feehng, that you can with difficulty persuade the patient that there is nothing of that sort in his eye. No doubt this sensation is produced by the ine- quality and roughness of the surface, consequent upon the irregular distension of the vessels of the inflamed membrane ; irritating the organ mechanically, just as a piece of dust would irritate it. Now in this respect, again, there is a m.arked difference between conjunctivitis and sclerotitis. In the latter disease, the pain is much more severe, of a dull aching character, with a sense of tightness : the part inflamed is denser, and less yielding than the conjunctiva. The pain is attended also, frequently, by throbbing, and is felt in the surrounding parts more severely perhaps than in the eye itself; in the brow, temples, and head. It is a very remarkable circumstance, too, that the pain is distinctly aggravated towards night ; increasing in violence from the evening till after midnight, abating towards morninc:, and ceasingf in a great measure durincr the day, to be again renewed in the evening. I am speaking now particularly of inflam- mation of the sclerotica produced by the same causes as give rise to catarrhal oph- thalmia ; of what is generally called rheumatic ophthalmia. The increased discharge that takes place from the eye in catarrhal ophthalmia is not a discharge of tears. In the beginning of the complaint there is sometimes a slight degree of lachrymation. But this soon ceases, and the mucous secretion from the surface of the membrane is augmented in quantity, and changed in quality. At first it is somewhat thin, but it soon becomes thicker, and it is often puriform ; i. e., opaque and yellow : sometimes it retains more exactly the characters of mucus, is transparent and viscid ; so that the eye looks moist to a bystander, while to the patient it feels gummy. The puriform secretion is not, in general, in any great abundance. You may see it lying in the angle between the eye and the lower lid, by pulling them apart ; or it makes itself visible at the corner of the eye, or between the eye-lashes along the edges of the lids, Avhich it glues together at night. Some- times, however, the discharge is more copious, so as to approximate to what is observed in the less severe forms of another disease I shall presently mention ; viz., purulent ophthalmia. There is seldom much sweUing of the conjunctiva. If there be any, it results from an cflusion of serous fluid into the meshes of the areolar tissue that connects the membrane with the subjacent sclerotica : by which effusion the conjunctiva is partially raised and separated. This kind of eff'usion often goes to a very great extent in purulent ophthalmia, or in violent inflammation of the external membranes, as I shall show you by and by. So much, then, for the symptoms and causes of catarrhal ophthalmia. It is neces- Kary that you should be familiarly acquainted with them ; not so much because the complaint is very serious in its nature, but because it is rnmmon ; because you are CATARRHAL OPHTHALMIA. - 183 sure to be again and again consulted about it, and because it is of great importance to distinguish it from other forms of oplithahnia, in order to adopt the proper treat- ment. A mistake of diagnosis might lead to mischievous activity on the one hand : or to still more pernicious inertness on the other. When the inflammation does not extend beyond the mucous membrane, it will run a certain course, and then, under favourable circumstances, subside. But if it be improperly treated, or if the patient cannot guard himself against a repetition of its exciting causes, it may continue for weeks, and harass him a good deal, and even produce such a change in the inflamed lids as may prove a source of permanent irritation, and of chronic disease, of the cornea over which they sweep. Remedies of an active kind, such as influence the whole economy, are scarcely ever necessary. The patient should observe the main particulars of the antiphlo- gistic regimen, and avoid exposure to drafts or currents of air, and to cold and mois- ture generally. When the external weather is inclement, he should remain in rooms of a uniform temperature. It will be right to purge him in the outset with calomel - and jalap, or witli calomel followed by a black dose finfusion of sennoe]. If the system at large sympathize with the local disease, it may become necessary to take blood from the arm, or to apply leeches ; but neither of these measures is requisite, except the inflammation is unusually severe, or the disease has been ne- glected or mismanaged. After the bowels have been thoroughly cleared by an active purgative or two, remedies which encourage moderate perspiration will be likely to forward the cure; such as warm diluent drinks ; five grains of Dover's powder, and immersion of the feet in warm water, at bed-time ; and saline draughts containing two or three drachms of the liquor amrnonix acetatis, taken at intervals during the day. But in this complaint local measures are of greater importance than those which are addressed to the general system: stimulating or astringent applications to the affected membrane itself. Almost all modern writers on diseases of the eye agree in this. Dr. Mackenzie, of Glasgow, states it as the result of his observations on Beer's practice in Vienna, and of his own subsequent experience, upon an extensive scale, at the Glasgow Eye Infirmary, that " general remedies in this disease are in- ferior to local ones ; that violent general remedies are worse than useless ; and that a local stimulant treatment may almost entirely be rehed on." Mr. Melin, in a report of ocular diseases at the General Hospital, Fort Pitt, states that he had treated nearly 300 cases, some of them severe, upon the same principle, without either local or general bleeding : and that he had satisfied himself of the efficacy of this plan of management. And Mr. Lawrence, who for ten years was one of the surgeons to the Ophthalmic Infirmary, in Moorfields, and who during that period had ample opportunities of studying this disease of the eye as well as others, says that it is one to which the use of powerful astringents is more particularly applicable. In dis- orders which manifest a strong natural tendency to terminate in recovery, it is onlj- by taking advantage of the conclusions derived from extensive observation that we can be quite sure of our ground ; and when the same result is reached by different and independent observers, we may safely place confidence in their concurrent testimony. Dr. Mackenzie and Mr. Melin both employ and recommend the same application, viz., a solution of the nitrate of silver in distilled water, in the proportion of foijff grains to the ounce. A large drop of this solution is to be applied to the membrane once or twice, or three times, in the course of the day. If the patient recline his head backwards, and the drop be placed in the hollow formed at the internal angle, of the eye, it will be diffused over the globe upon the separation and subsequent winking of the lids. After a minute or two this causes a pricking or smarting sen- sation, which subsides in from ten to twenty minutes, and the eye then feels much easier than it did before the drop was applied. Dr. Mackenzie says that the feeling as if of sand in the eye, is uniformly relieved, and the inflammation abated, by the use of this solution, which he speaks of as a remedy of sovereign utility in the puro- mucous inflammations of the conjunctiva. The eye continues easy, after its appli- cation, for five or six hours perhaps; and when the symptoms return, they are agaus 184 DISEASES OF THE EYE. to be met by the introduction of another drop. As the disease subsides the remedy gives less and less pain, till at last it is scarcely felt. He tells us that " he has some- times alarmed other practitioners by proposintr to drop upon the surface of an eye highly vascular, affected with a feeling as if broken pieces of glass were roiling under the eyelids, and evidently secreting puriform matter, a solution of lunar caustic ; and that he has been not a httle pleased and amused at their surprise when, next day, they have found all the symptoms much abated by the use of this application." He declares, also, that the acetate of lead, and the sulphate of zinc, substances which are much used in what are called colhjria or ei/e-ic ashes, are greatly inferior, as local applications, to the nitrate of silver, in this disease. There is another expedient that requires to be attended to in these cases. When the eyelids are gummed together by the viscid discharge, much hurtful irritation is often produced by the hasty attempts which the patient makes to separate them. Now all this may be obviated hy smearing their tarsal edges at bed-time with any mild ointment ; the spermaceti ointment, or a bit of lard. There is no necessity, as I believe, in this form of disease, to use medicated or stimulating salves : the object is to prevent the mutual adhesion of the lids ; and this is accompanied by simple grease. Purulent ophthalmia is another disease of the conjunctiva ; differing from catarrhal ophthalmia in degree, in the severity (3f its symptoms, in the danger which it imphes to the sense of vision, and in its exciting causes. It takes its name from the profuse discharge of pus, or of altered mucus w'hich cannot be distinguished from pus, that pours from the inflamed surface. There are three remarkable varieties of purulent ophthalmia, called respectively — 1, purulent ophthalmia of adults, or Egyptian ophthalmia, or contagious ophthalmia; 2, gonorrhceal ophthalmia; and 3, purulent ophthalmia of ncAvly-born children. The symptoms of the two first-mentioned varieties, especially in their severer forms, are so much the same that it would involve us in mere repetition if I did not take them together. In truth it appears to me much the simpler and better mode to look upon purulent ophthalmia as one disease ; and then to specify, as we go on, the differences by which its several forms are characterized : and not to split it into three different diseases, and to give a separate description of each. Although purulent ophthalmia is inflammation of the very same part that is in- flamed in catarrhal ophthalmia, from which it differs chiefly in degree, it is a hideous complaint, either to suffer or to treat : on account of the rapid progress it frequently makes, and its destructive tendency. The inflammation is greatly more intense ; the surface becomes, in the worst cases, highly vascular throughout. A copious discharge of thick, yellow, puriform matter is speedily established ; this flov/s out from between the swollen lids, and runs over the cheek which it often excoriates. At the same time considerable effusion takes place into the areolar tissue that connects the sclerotica and the conjunctiva. You are aware that the conjunctiva extends over the whole anterior face of the globe ; adhering, however, so much more closely to the cornea than to the sclerotica, that we might doubt at first whether it did not stop at its margin. This close and firm adhesion over the cornea, and the looser attachment to the sclerotica, give rise to a very sintrular phenomenon. The conjunc- tiva is raised to some distance from the subjacent sclerotica by the effijsion that takes place between them ; and it projects around the cornea in the shape of a large thick ring, leaving the cornea buried, as it were, in a pit ; nay, sometimes, the swollen and prominent membrane will lap over, so as nearly to exclude the cornea from our sight. The same kind of effusion takes place, also, sometimes very rapidly, into the areolar tissue connecting the conjunctiva with the palpebrre, producing great ex- ternal tumefaction, and a livid red appearance of the eyelids, which project forwards in large convex masses, and often prevent our seeing the globe of the eye at all ; the upper lid especially becoming hard and stiff, and completely overhanging the lower. This swelling from effusion into the subconjunctival tissue is of a pale red fleshy colour, sometimes marked here and there with patches of extravasated blood. The appearance is called chemosis : not ecchymosis, as the similarity of the sound PURULENT OPHTHALMIA. 185 has led some erroneously to suppose, but chemosis. ExxviArtoai?, from sxxn^, signifies an effusion, and by common consent among medical writers, an effusion of blood. Xriuaai;, the root of which is XW"-^ hiatus, means a gap or hollow. Now this puriform or purulent inflammation, so long as it is confined to that part of the membrane which lines the eyelid, is not of any serious importance ; but it is prone to extend itself to the cornea, and the whole anterior surface of the eye, and to produce ulceration or sloughing of the cornea, either in consequence of the actual inflammation of that part, or in consequence of the pressure made upon and around it by the swelling of chemosis. Frequently, when the cornea remains visible, a furrow or trench of ulceration may be seen at its margin ; sometimes forming a complete circle, sometimes portions of a circle, sometimes going quite through ; and when this happens, or when the cornea bursts, from the effects of deeper-seated inflarrmiation, the aqueous humour is evacuated, and the iris protrudes through the aperture. Even when these horrible consequences do not take place, the eye is often as effectually spoiled for the purposes of vision by an interstitial deposit between the laminre of the cornea, rendering it opaque, and permanently precluding the passage of light towards the retina. And when neither of these lamentable effects of the inflammation is produced, it is apt to leave behind it a chronic and very troublesome condition of the membrane. The conjunctiva that lines the hds remains thickened, granular, hard, and rough, instead of regaining its natural smoothness, softness, and polish. One consequence of this is a perpetual irritation of the surface of the cornea, by the mechanical fric- tion of the rough and hard lid in opening and closing the eye, and in the various motions of the eyeball. The continuance of this irritation leads at length to hazi- ness or opacity of the cornea, which becomes traversed also by visible red vessels. Chronic inflammation of its investing membrane is produced, and kept up. The most severe forms of this disease are attended, at length, with a good deal of pain ; doubtless because the inflammation penetrates to the deeper-seated textures of the organ. The pain then presents those characters which 1 mentioned before as belonging to certain inflammations of the sclerotica : i. e., it is pulsative ; and some- times sharp and lancinating, sometimes dull and aching ; and it is intermittent ; or if constant, it is aggravated by paroxysms : the paroxysms coming on at night, and abating towards morning: and it is not confined to the eye itself, but extends to the parts around it. This circumorbilal pain is characteristic of inflammation of the sclerotica and cornea, and of the internal tunics, the choroid and iris. When the eye is not visible, from the swelling, we may conclude that the inflammation is as yet confined to the conjunctiva, if the pain be only scalding or "sandy;" and that it has extended to the sclerotica and cornea if the pain be severe, throbbing, and paroxysmal. In the cases in which the latter kind of pain is felt, the cornea gene- rally gives way. Sometimes this event brings relief to the pain, and sometimes the pain continues to return after the bursting of the cornea. It is curious that with all this, there is seldom much intolerance of light. In the earlier stages of this malady, it is entirely local : the system at large is scarcely disturbed at all. But the constitution^fbegins to sympathize and suffer when the local symptoms increase in severity : the pulse becomes frequent, and the tongue white, but there is seldom much thirst or fever; and when blood is drawn from a vein, it does not, in general, exhibit the buffy coat. A good deal of variety in these respects has been noticed, however, in diferent cases. Children manifest more constitutional disturbance when labouring under purulent ophthalmia than adults. If there be not much fever, there is always much uneasiness and irritation, and the sleep is broken by the nocturnal accessions of pain. Such being the general features and course of the disease, at least as it occurs in adults, or in patients beyond the period of infancy, we may next inquire into the circumstances under which it has been observed to arise. Purulent ophthalmia has been ascertained to be a common disease in hot cUmates : m India, Persia, and Egypt. It was brought into England, from the latter country, by our troops in the beginning of the present century, after the well-known contest which there took place between the French army and our own under Sir llal])b a2 186 DISEASES OF THE EYE. Abercromby. In this way it got the name of the Egyptian ophthalmia. It naturally excited very great attention at that tinie, and it does not appear to have been accu- rately described before. To give you some notion of its prevalence in certain places and at certain periods, and of its serious nature, I may state that, according to returns made from the military hospitals at Chelsea and Kilmainham, there were, on the 1st of December, 1810, no fewer than 2317 soldiers a burden upon the public from blindness in consequence of ophthalmia ; and in this number those soldiers who had lost the sight of one eye only were not included. Again, in the year 1804, within nine months, i. e., from April to December nearly 400 cases of purulent ophthalmia occurred at the Royal Military Asylum; and within six years from that time, without including relapses, upwards of 900 cases had taken place in the same establishment. You Avill find these statements in a paper in the third volume of the Transactions of a Society for the improvement of Medical and Chiriirgical Knowledge, by the late Sir Patrick Macgregor. Many of our best regiments were for a time crippled and rendered unfit for service by this disease ; which they carried from Egypt to other foreign stations as well as to this country, especially to Sicily, Malta, and Gibraltar. Nor were the French troops less extensively affected by it. Assalini, who wrote an account of the ophthalmia of Egypt, states that two-thirds of the French army were labouring under it at one time. It occurs also, but fortunately not to such an extent, in civil life. It broke out, some years ago, in a large boys' school in Yorkshire ; and Windness of one or both eyes, or serious injury to sight, from opacity of the cornea, and other consequences, took place in nearly twenty cases. You perceive, therefore, that this formidable complaint has been ascertained, within the last forty years, to have prevailed as an epidemic ; attacking great numbers of persons living under the same circumstances, and having constant communication with each other. And one of the first questions that naturally arises in one's mind is, whether it is capable of beinj propagated from one person to another by conta- gion. Much difference of opinion has existed on this subject. Fur my own part I cannot imagine how any one can doubt its contagious properties. I will give you a case or two, as related by Sir Patrick Macgregor, proving two very im.}7i;rlant facts : first, that the disease is capable of being excited in the eye of a person, previously healthy, by the direct application of the puriform discharge from an eye affected with this ophthalmia; and secondly, the very rapid operation of the poison so applied. One of the nurses employed at the Mihtary Asylum, while syringing the eye of a boy who had much purulent discharge, found that a considerable quantity of the matter had s^^urted into her own right eye. This was at four o'clock in the after- noon. She fek little or no smarting at the time ; but towards nine o'clock the same evening her right eye became red and somewhat painful, and when she awoke the next morning, the eyelids were swelled, there was purulent discharge, and she com- plained of pain in the eyeball. The usual remedies were begun in the morning, and she recovered in the space of three weeks or a month. The left eye, into which none of the matter had gone, remained free from disease. On another occasion a precisely similar mischance befell another of the nurses, « xcept that the matter spurted into her Ifft eye, about nine in the morning. Sir. P. Macgregor happened to be in the hospital at the time when the accident occurred. He desired the nurse to bathe her eye immediately with lukewarm water, and she did so for several minutes ; but notwithstanding this early precaution, about seven o'clock in the evening the left eye began to itch to such a degree that she could not refrain from rubbing it. When she awoke next morning the eye was considerably inflamed, tlit; lids were swelled, and upon moving the eyeball she had a sensation as if some sand were lodged beneath it. In the course of the same day, purulent rtuid issued from the eye, and other symptoms followed, which were similar to those of the children under her care. The disease subsided under the usual treatment, in fourteen days. In this case also the other eye remained sound. PURULENT OPHTHALMIA. 187 A third nurse in the same institution did not come off so well. She wlis spong- ing, with warm water, the eyes of a boy suffering severely from purulent ophthal- mia: and she inadvertently applied the sponge she was using to her riglit eye. This happened at eight o'clock in the morning. She mentioned the circumstance to the other nurses, but she took no means to prevent infection. Between three and four o'clock of the afternoon of the same day, itching of the right ^ye came on ; and before she went to bed it was considerably inflamed. Next morning her eyelids were swollen, she complained of pain in moving them, the whole anterior surface of the eyeball was in a state of high inflammation, and a purulent discharge began to trickle down the cheek from the inner canthus. The symptoms increased in severity in spite of all the means employed to check them, and on the fourth day the eyeball burst. The sight of the eye was irrecoverably lost, and the inflammation continued for upwards of three months. The left eye did not suffer. These were cases in which the poisonous matter was acddenially applied. But a similar application has been made intentionallxj and by the way of experimenl, and ivith the same results. Dr. Guillie, of Paris, introduced the puriforra secretion fur- nished by some children affected with purulent ophthalmia, under the eyelids of four other children belonging to a separate institution for the blind. These four children were amaurotic, but the external surface of their eyes was healthy and entire. In each instance a regular attack of purulent ophthalmia followed the intro- duction of-the matter. Facts of this kind prove, I say, beyond the possibility of question, that the disease may be propagated from a diseased to a healthy eye by actual contact of the puri- form matter. Here we have not one case (which might be considered as an acci- dental coincidence), but several: the morbid secretion is applied to one eye only; the symptoms of inflammation commence, and the regular form of the disease is fully developed within a few hours after the first application of the pus; and that eye only is affected. It is impossible to get over evidence of this kind. The only questions, therefore, that can be raised respecting the sources of the disease are these : — whether the malady can be communicated through the medium of an atmosphere impregnated with the efliuvia that proceed from the diseased part, without any actual contact of the pus in substance ? — whether the disorder is ever produced in any other way than by contagion ? — and if so, how it is then excited ? I ought to observe, that independently of such isolated examples of the direct communication of the complaint, by contact with the diseased matter, as I have just laid before you, the history and progress of ophthalmia, since it has been noticed in Europe, are very strongly indicative of its contagious nature. I have already stated that it was not known in Europe till the commencement of the present century — till after the Egyptian campaign in fact. It is not alluded to by any of the authors on disorders of the eye who wrote previously to that period ; although some of the Italian physicians and surgeons, and many of the Germans, had paid great attention to ophthalmic diseases. It spread from Egypt both to France and to this country, and to other places in which detachments of the Egyptian force were subsequently stationed : in Sicily to wit, and in Gibraltar and Malta. Whenever it has prevailed among our troops at home, this circumstance has been uniformly observed : that it first broke out in soldiers who had come from Egypt, or had communicated with regi- ments which had been in Egypt. In aU cases its origin could be traced to the intro- duction of fresh troops into the regiment or the barracks. Again, the manner in which it spreads is exceedingly instructive on this point. It diffuses itself rapidly, when once introduced, in places where a considerable number of persons are collected together ; especially under circumstances favourable to the propagation of contagious maladies ; as among soldiers assembled in barracks, where many of the men live in the same apartments, and use the same t9wels: while the officers, who live in larger and better ventilated rooms, and apart from each other, generally escape. And the good effect, in checking the further extension of the disease, of separating the healthy from the sick, and of restricting every one to his own washing utensils, and clothes, and towels and sponges, leads to the same cor» 1S8 DISEASES OF THE EYE. elusion. Rust, a German author, mentions this striking fact in corroboration of »^-hat I have just been saying. The disease broke out in the town of Mayence. This place was garrisoned by Prussian and Austrian troops. The ophthalmia began and spread extensively among the Prussian soldiery ; while the Austrians, who were stationed in separate barracks from the Prussians, in another quarter of the town, remained quite free from it. Those persons who deny, or who doubt, the contagious nature of purulent oph- thalmia, rest their opinions upon some such considerations as these. They hold, in the first place, that the peculiarities of the atmosphere, in Egypt, where the disease has been found so common, are siffficient in themselves to account for it. That the inhabitants of that country never dream of its being caused by contagion. Assalini, who saw the complaint raging in the Frencii army, professes his behef that it did not arise or spread by contagion. He remarks that the atmospheric conditions which are known to occasion catarrhal affections, are very frequent and powerful in Egypt: the days are very hot, the nights chilly, and attended with heavy dews ; and men's eyes are perpetuall}' exposed in the day time, to a dazzling glare of light from the white and arid surface, while the air is full of floating particles of hot sand, which are raised from the ground by the sHghtest breeze. His opinion, therefore, and the opinion of others who saw the disease as it prevailed in that country, was, that it consisted simply of acute catarrhal inflammation of the conjunctiva ; and that it affected those persons most who were most exposed to the exciting causes of such inflammation : the common soldiers, therefore, more frequently than the officers. Other circumstances adduced by the disbelievers or sceptics, in respect to contagion, are that many who have intercourse with the sick escape the disease ; and that when bodies of men, among whom purulent ophthalmia has been prevailing to a great extent, are broken up and dispersed, the complaint is not thereby disseminated, as they say it ought to be, supposing it to be communicable from one person to another; that, in fact, this dispersion, the disbanding of troops, for instance, and sending them to their friends and families all over the country, is the surest way of stopping the disorder. Again, man)' inefTectual attempts have been made to inoculate the eyes of ani- mals with the matter of purulent ophthalmia. Miiller, a German, with that pains- taking industry, for which the Germans are so remarkable, collected on a camel's hair pencil matter from the eyes of patients labouring under purulent ophthalmia, early in the morning, before they had washed them, and inserted it under both the lids of each eye, in a great number of animals, leaving the pencil there for a few seconds, and then pressing it so as to squeeze the matter out. He also smeared the pus copiously and repeatedly along the edges of the lids. He served in this way five cats, ten dogs, two rabbits, two squirrels, two blackbirds, a starling, a yellow-hammer, and a cock. And in none of them did the inoculation produce the slightest effect. It is a sufficient answer to these negative experiments, however, that other persons were more successful in producing the disease in this manner. Vasani and Grafe have both excited it repeatedly in dogs and cats, by the application to their eyes of matter taken from human patients. And I have already informed you of many in- ■lances in which the disease was generated in men by accidental, and even by intentional inoculation. No amount of negative evidence can do away with positive testimony so often repeated. And with respect to the other objections, and especially the main objection, that persons may associate and hold close intercourse with individuals labouring under purulent ophthalmia without contracting the disease, I would have you remark that this is no more than what continually happens in regard to diseases which are ncknowledged on all hands to be contagious, and to have no other source at present, iiowever they might have originated at first, hut contagion ; the small-pox, for example. I think there is some reason for believing, from the facts which I have been relating, that purulent ophthalmia, like the small-pox, is capable of being com tnunioated from one person to another, not only by positive contact, but by trans- PURULENT OPHTHALMIA. 189 "nission of the specific poison somehow for a short distance through the air. Bui many persons exposed to the contagion of smull-pox escape it altogether : and more persons still, perhaps, fail to be affected, though fully exposed, at one time, and yet readily accept the disease at another time, even when the exposure may seem much more slight than on previous occasions. Now what is true of the small-pox may be presumed to be likely, although, perhaps, in a different degree, of purulent ophthalmia. As to the circumstance that the disbanding of a regiment infected Avith the disease prevents instead of favouring its dissemination, that circumstance is really no ar- gument at all against our belief in its contagious nature. We shall see hereafter, that when fever patients are collected in numbers in distinct wards, or in fever hospitals, that disease is very apt to be communicated to the nurses and medical attendants of the sick ; whereas, when such patients are distributed here and there among others, in a general hospital, the disease is scarcely ever known to spread. In the one case the poison is concentrated and effeciive, in the other it is diluted and harmless. Dr. Mackenzie, indeed, has come to the conclusion, from what he has himself observed, that the discharge in catarrhal ophthalmia, especially when it is distinctly puriform, if conveyed from the eyes of the patient to those of others by the fingers, or by towels, and so forth, is capable of exciting inflammation of the conjunctiva, still more severe, more distinctly puriform, and more dangerous, than was the original ophthalmia. And with respect to the disease which 1 have been speaking of as purulent ophthalmia, or Egyptian ophthalmia, the author calls it contagious oph- thalmia; he holds that the mflammation of the conjunctiva, whether in the mild or the more severe form, may and often does originate from common atmospheric in- fluences ; but that, when so caused, it may be communicated from person to person, especially when it is attended with a puriform discharge. And this is an opinion which, I think, is fully warranted by the facts which we are in possession of upon this subject. There is a strange reluctance, which I have never been able to account for, in some medical men, to admit of the operation of contagion, as a cause of disease. Undoubtedly there are some difficulties belonging to the doctrine of contagion, and I hope in the progress of the course, and especially when I come to speak of fever, to give that subject the careful attention which its great importance demands ; and to enable you to make up your minds respecting it. At present I will only remark, that there is nothing absurd, nor unlikely in the sup position, that diseases may first arise from some other source, and then become capable of spreading by contagion ; and that in all cases, even when the contagious principle is most manifest, there seems to be something else required besides the presence of contagious matter ; there must be a readiness to receive it, a suscep- tibility of its influence, on the part of the person exposed to it : a predisposition which is less common in regard to some diseases than to others ; but without which there is scarcely any complaint that can be so propagated. At any rate I would desire to impress upon you the expedience and propriety of acting whatever your doubts or your belief may be, 'upon the safe side. We are bound to proceed, in all questionable cases of this kind, upon the most unfavourable supposition. Very great discredit and loss of reputation have fallen upon practi- tioners who, having themselves no belief that a given complaint was contagious, have neglected those precautions which, under a contrary impression, they would have thought necessary. Perhaps they may have sometimes suffered utijustly ; but you had better not commit yourselves, especially while you are young in years and in experience, by strong assertions of the non-contagiousness of any disease, the mode of propagation of which is at all questionable. And as for the disease ;/iat we are now concerned with, you will do wefl to act as thougn it were certainly conta- gious ; whether you meet with :t as a sporadic or as an epidemic complaint : whether it be severe in its symptoms, or mild. You should forbid the use of your patient's towels and washing vessels by other members of the family ; you should avoid em- ploying the same instruments or sponges to any sound eye, which you have been using for one that is affected with this complaint ; and you should take care to wash 190 DISEASES OF THE EYE. your own hands, after touching a diseased eye, before you apply your fingers to another that is yet, in this respect, healthy. LECTURE XVIII, Purulent Ophthalmia, continued. Gonorrhceal Ophthalmia! Purulent Oplv- thalmia of Infants. Strumous Ophthalmia. When we last met, I spoke of catarrhal ophthalmia, i. e., a mild and common form of inflammation of the conjunctiva, resulting from atmospheric influences. I described its characteristic symptoms, and explained the treatment that has been found most successful for its cure ; consisting chiefly in local stimulating or astrin- gent applications. I began also to speak of the severer forms of inflammation affecting the same part, and included under the head of jmrulent ophthalmia. The symptoms and course and consequences of the two varieties of this complaint, as it occurs in adults, are so essentially the same, that one description of its phenomena is enough. There are certain differences, however, that require to be noticed, in respect to its exciting causes. I laid before you the reasons Avhich satisfy me, that what is called the Egyptian ophthalmia is a contagious disease ; and which make it probable that the complaint is capable of being propagated from person to person, through the medium of the air, without the necessity for any substantial application of the morbid secre- tion from a diseased to a sound eye. These reasons, briefly stated, are as follows : that the disease was unknown in Europe till after the war in Egypt ; that, arising among our own and the French troops in that country, it was conveyed by them to various places, and extended itself to soldiers who had intercourse with those troops ; that when once introduced it spreads rapidly wherever men are crowded together within a small compass, pay insufficient attention to cleanhness, and use the same towels and utensils ; that it has been propagated again and again by the direct application of the morbid secretion ; and that its progress is checked by measures that provide against such accidental apphcation, and by separating the diseased from the healthy. On the other hand, it has been contended that the disease is nothing more than an extreme degree of catarrhal ophthalmia ; that the peculiar conditions of the atmosphere in Egypt and other hot countries, where it is prevalent, are enough to account for it ; and that when troops are disbanded, they do not give the disease to their friends and families all over the country, but, on the contrary, the dispersion of the sick in this way is the most efl^ectual mode of stopping the disease. To these arguments the proper answer is, that the same difficulties meet us in. respect to some other diseases which are confessed by all persons to be strictly con tagious. My own creed upon the matter is this — that the disease may, and often does arise, independently of contagion, from the agency of ordinary causes of inflammation , and that having so originated, it acquires contagious properties, which develop them- selves only under circumstances that favour the propagation of most of the contagious rompiaints. I shall next advert to purulent ophthalmia as it is observed to occur, in the adult, m connection with gonorrhoea. If we look to the mere phenomena presented by the inflamed eye, we find nothing to distinguish the gonorrhceal from the Egyptian ophthalmia. Taking the average of a large number of cases, the gonorrhceal is the severer form of the two, and runs the more rapid course. It is said, also, that the inflamniation usually commences on the lids in the Egyptian variety, while it attacks the whole conjunctiva at once in the gonorrhceal. But comparing individual in- stances, these mere differences, and slight differences, too, in degree and situation, •rill not help our diagnosis GONORRHCEAL OPHTHALMIA. 191 But other circumstances may guide us. If a patient presents himself with severe purulent ophthalmia, who has not been exposed to any of the known atmo- spheric causes of that disease, and at a time when purulent ophthalmia is not pre- vailinjT as an epidemic, and if this patient have a clap, we may conclude that we have to deal with a case of gonorrlireol ophthalmia ; and this conclusion will be fur- ther strengthened if the disease affects one eye only. For what, through the lack of any better nomenclature, I am constrained to call Egyptian ophthalmia, seldom restricts itself to a single eye. Dr. Vetch says, " there is but one case in a thousand in which one eye only becomes affected." Walther observes that contagious oph- thalmia almost always appears in both eyes together, but not in the same degree ; and Eble (another German author) states that the contagious ophthalmia has not confined itself to one eye in any instance. These round assertions require, how- ever, some qualification ; the nurses, whose cases I quoted in the last lecture from Sir Patrick Macgregor's paper, suffered each in one eye only. On the other hand, gonorrhoea! ophthalmia mostly, but by no means always, is hmited to one eye. In Mr. Lawrence's instructive book On the Venereal Diseases of the Eye, he mentions fourteen cases of gonorrhoeal ophthalmia. In nine of these, one eye only was inflamed. It is always a matter of some interest to make out whether the disease h^is or has not any connection with gonorrhcea ; even though we may gain nothing, in vespect to the treatment, by the distinction. Purulent ophthalmia has been said to be connected with gonorrhoea in three seve- ral ways ; 1st, by direct contact of the gonorrhceal discharge from the urethra with the conjunctiva ; 2d, by metastasis of the inflammation from the urethra to the eye, without any such contact of matter; and 8d, independently of either of these ways; i. e., purulent ophthalmia has been supposed to occur in connection with clap, just as ulceration of the throat is apt to occur in venereal diseases. Now the last two of these three modes of origin are more or less questionable ; the first is certain. Very odd speculative opinions are apt to possess themselves of the minds of medi- cal as well as of other philosophers. Some who believe that the disease is commu- nicable by direct contact of gonorrhoeal matter to the eye, yet hold that it must come from the urethra of another person ; that the Hudibrastic aphorism is true, " No man of himself doth catch." Dr. Vetch seems to have fallen into this opinion through the very common mistake of drawing positive conclusions from negative experiments. He had known a hospital assistant who, " with more faith than pru- dence," conveyed the matter of gonorrhoea from his urethra to his eyes, with impu- nity. He states also the converse experiment : a soldier in a very advanced stage of Egyptian ophthalmia, attempted to divert the disease from his eyes by applying some of the matter they were discharging to the orifice of his urethra : no effect followed this trial. But in another case the matter take>. from the eye of one man, labouring under purulent ophthalmia, was applied to the urethra of another man ; and inflammation commenced there in thirty-six hours, and he had a very severe attack of gonorrhoea. Some persons, judging from such cases as this, and from the similarity of the discharge in the two diseases, " have gone the length of concluding (according to Dr. Mackenzie) that gonorrhoea has been originally an inocula-tion oi the urethra by the matter derived from the eye in the Egyptian ophthalmia ; whilst others are of opinion that this last disease is nothing else than the effect of an inocu- lation of the conjunctiva with matter from the urethra in gonorrhoea." To satisfy you that a person may "catch" the complaint from himself, or from others, it is right that I should bring before you one or two well-marked cases. It is a common persuasion, among the lower classes, that to bathe the eyes in human urine is good for the sight. This piece of practice has cost several persons their vision. A gentleman belonging to the class mentioned to me the other day two cases of purulent ophthalmia so produced, which he had seen among Mr. Guthrie's patients at the Ophthalmic Hospital. In the one, a young woman, not so healthy as she ought to have been, used her own water : in the other, an older woman, for what reason it did not appear, preferred her husband's to her own. Mr. Lawrencu 192 DISEASES OF THE EYE. alludes to several similar cases. He details an instance also, in which partial slough- ing of one cornea occurred; the disease having been caused by the patient's wiping his e3'es with a towel soiled with the gonorrha:;al discharge from his own urethra. But one of the neatest and most conclusive examples of the production of the dis- ease in this way has been furnished by Dr. Mackenzie. A patient was brought to him from the country with his left eye violently inflamed and chemosed, and dis- charging a large quantity of purulent fluid ; the lower Hd everted, and the cornea totally opaque. Thirteen days before, this man, who had then a profuse gonorrhoea, but whose eyes were perfectly well, while stooping down and shaking away the dis- charge from his penis, flung a drop of it fairly into his left eye. Violent inflamnia- mation immediately set in, was confined to the eye that was thus inoculated, and produced the rcsuks I have mentioned : the gonorrhoea going on just as before. Numerous authentic cases have been recorded of gonorrhoeal ophthalmia produced by the application to the eye of gonorrhoeal matter from another individual. Mr. Wardrop met with the following example. An old lady went into the dressing-room of her son, who had gonorrhoea, and washed her face with a towel which he had recently heen making use of. Purulent ophthalmia quickly supervened, and de- stroyed the eye in a few days. Delpech mentions the instance of a young and healthy woman, who bathed her eyes with goulard water, by means of a sponge which had been used by a young man who had a clap : violent inflammation soon arose, and the sight of one eye was lost. Several cases of purulent ophthalmia have been observed in laundresses, who had been employed in washing linen fouJ with the discharge of gonorrhoea. Mr. Lawrence seems to be of opinion that purulent ophthalmia is not a very fre- quent consequence of the application of the urethral discharge to the eye of the same person. " When we consider," he says, " how this matter is diffused over the linen of patients, both male and female, how often the fingers must be smeared Avith it, and how inattentive to cleanliness the lower classes are, we cannot help concluding that the gonorrhoeal discharge must be often applied to the eyes of the same individual; yet gonorrhoeal ophthalmia is comparatively rare." Dr. Macken- zie, on the other hand, thinks that the application of the matter to the eye is seldom made. "The instinctive closure of the eyelids," he observes, " when the finger approaches the eye, making it actually difficult for a person to touch his own con- junctiva, unless with one finger he draws down the lower lid, and intentionally applies another finger to the eye, will serve in some measure to explain the rarity of this kind of inoculation." It has been noticed that women are much less frequently the subjects of gonor- rheal ophthalmia than men. Does gonorrhoeal ophthalmia ever occur by metastasis ? This question does not admit of a positive answer. Practical men are divided in opinion on the subject. In the majority of cases of gonorrhoeal ophthalmia, we are unable to trace any appli- cation of the urethral discharge to the eye, either from the same or from another individual. Yet it does not follow that no such application took place. The Ger- man and Italian writers believe in metastasis. "In all the instances," says Beer. " which I have seen, this ophthalmia has occurred in young, plethoric, robust, and truly athletic men ; and it has always taken place in a very short time, generally in a few hours, after the suppression of gonoirhceal discharge from the urethra." Mr. Lawrence never knew the urethral discharge stop upon the coming on of the oph- thalmia ; it has generally diminished, but in some instances has continued as copi- ous as before. He seems to regard the occurrence of the ophthalmia as analogous to those successive attacks of distant parts that are common in gout and rheumatism. Dr. Mackenzie evidently doubts the occurrence of metastasis at all in this disease, and IS inclined to refer all the cases in which it has been alleged, to inoculation, or to an accidental occurrence of purulent ophthalmia and gonorrhoea in the same person. The supervention of purulent ophthalmia as a part of the gonorrhoeal malady, independently of inoculation and of metastasis, seems to me extremely problematical. The eye is well known to suffer, as well as other organs, in the secondary forms of GONORRHCEAL OPHTHALMIA. 193 syphilitic disease, but the conjunctiva is not the part that is attacked. I have never seen nor heard of any satisfactory example of purulent ophthalmia alternating with gonorrhoea, Avhere the possibility of inoculation was excluded. And, upon the whole, my own opinion — (you will take it for whatever it may seem worth) — is against the existence of this alleged form of purulent ophthalmia. Whether it exists or not is of very little consequence in regard to the main question ; namely, w^iat is the proper mode of treating the purulent ophthahnia of adults i^ Now the two chief points to consider, so far as respects the treatment, are — first, blood-letting; and secondly, the application of strong astringents to the inflamed membrane. Blood-letting has been carried to a very great extent in this disease, or in these diseases, if you choose to consider the Egyptian purulent ophthalmia and the gonor- rhoea! purulent ophthalmia as two different inflammations. Its effects have not been very decisive or satisfactory ; indeed, we could hardly expect that they would. In the first place the inflammation is so rapidly destructive, that, in many of the worst cases, irreparable mischief is done before the patient applies for medical assistance. In forty-eight hours, or a little more, Mr. Lawrence tells us, the affection may have proceeded to such an extent as to be beyond our control. Of course this reason for the want of success is equally applicable to every remedy that has been, or could be, proposed. But independently of this, even when the disease is seen and sub- mitted to treatment in its very beginning, we should have the less confidence in the power of general blood-letting to control it, for these two reasons : that the pari affected is a mucous membrane ; and that there is so little constitutional sympathy with the local inflammation. Free venesection tells most upon inflammation, when it is attended with fever and a hard pulse, i. e., with increased action of the heart : which the abstraction of blood tends to abate. It is also a matter of experience, that general bleeding has more influence over the inflammation of serous and fibrous raembranes than over that of the mucous tissues. Accordingly, though bleeding has been even lavishly employed in purulent ophthalmia, it has too often disap- pointed the practitioner. There is one lesson, however, to be learned from copious blood-letting in this disease, even when it fails of its object. It clearly demonstrates what may be hoped for, by having recourse to that measure in internal inflamma- tions. " You see a person," says Mr. Lawrence, who has both had, and used freely, very numerous opportunities of putting this remedy to the test, " you see a person with his eye bright red, and very painful ; he cannot face the light, and tears gush out, with great suffering, if he attempts to do so. You bleed to fainting, and immediately the capillaries are emptied, so that the organ resumes its natural pale- ness ; the pain is gone, the eye is opened without difficulty, and the full influx of hght can be borne without an uneasy sensation. For the time the part has passed from violent inflammation to a nearly natural state. With the restoration of the circulation the inflammation will recur after this temporary suspension ; but its vio lence is diminished, and it often gradually abates." Mr. Lawrence is here speaking of acute inflammation affecting the textures of the eye generally, and not of purulent ophthalmia in particular; but I am desirous that, in passing, you should take notice of this direct effect of bleeding to syncope, upon the capillaries of the eye, because' it teaches us what the same expedient may do for the capillaries of any other inter- nat part, which we cannot see-, when that part is attacked with inflammation. In purulent ophthalmia, however, if you trusted to bleeding alone, you would often reduce your patient to a very dangerous state of weakness, and after all fail of your mark. Dr. Vetch bears strong testimony to the usefulness of blood-letting when freely employed in the early stages of Egyptian ophthalmia; and certainly it ought never to be neglected. In the very onset of the disease, it will aid the local expe- dients which I shall presently mention ; and if the patient be not seen till the globe of the eye is invisible for the swelling, the propriety of general bleeding will be still further indicated by the occurrence of throbbing and circumorbital pain, returning in nncturnul paroxysms ; for this symptom denotes that the inflammation has de- scended deeper than the conjunctiva. The bleeding should be performed in the way I formerly spoke of as being required in serous inflammation: the patient should b'" V.\ R 194 DISEASES OF THE EYE. bled from the ami In an upright position, till fainting is about to ensue, or the pulse begins to falter. You will do more towards obtaining safety for your patient's vision in this way, and at less expense of his strength, than by bleeding him manj' times to a smaller amount. The bleeding ad ddiqinum may require to be once or twice repeated ; and when the patient begins to rally from his faintness, from twelve to twenty-four leeches may often be applied with advantage; round i\\e eye and not ripoii the tumid lids, where their bites are apt to add to the existing irritation, and to fester. You had better bleed your patient from the arm, and not from the jugular vein, or the temporal artery, for reasons which, as I have fully stated them already, I need not now repeat. But of late years, more reliance has been placed by many practitioners upon local stimulants, for checking this horrible malady, than upon general or topical bleeding. Dr. Vetch strongly recommended the insertion o'i imdihded liquor jdinnbi accfalis ; and Mr. Briggs, in his translation of a work of Scarpa on the eye, advised the intro- duction of a very minute quantity of the oil of turpentine between the eyelids. But Mr. Guthrie has the merit of having applied, in its full extent, this principle of curing conjunctival inflammation, even in its severes-t forms, by stimulant and astrin- gent substances. I told you, when speaking of catarrhal ophthalmia, that Mr. Melin and Dr. Mackenzie treat that complaint with a wash, made by dissolving four grains of lunar caustic in an ounce of distilled water. I might have added other authorities in favour of the same kind of practice. Now Mr. Guthrie treats purulent ophthal- mia on the same principle, but with a much larger dose of the nitrate of silver. The greater intensity of the disorder is met by increasing the strength of the remedy. He considers it to be a local disease of a pecuhar character ; and, acting upon the aphor- ism of John Hunter (an aphorism, however, which requires som.e quaUfication) that two diseases or actions cannot go on in a part at the same time, he proposes to set up in the inflamed conjunctiva a new action, which shall supersede the original dis- ease, and create another that is more manageable. In this point of view Mr. Guth- rie's ratio mcdendi agrees with that of Hahnemann, about which there has been so absurd a noise made of late. I have never had the advantage of seeing Mr. Guth- rie's plan tried, but, from all that I have heard of it, I beheve it to be a valuable dis- covery. A priori, we should expect that the caustic application would add to the existing mischief, and destroy all chance of saving the inflamed ej'e. But it is not so. Even Mr. Lawrence, Avho v/as, I have reason to think, formerly very sceptical on this point, appears to be so no longer. In his treatise On the J'enereal Diseases of the Eye, he uses this cautious language : — " Destructive or injurious consequenres have so frequently resulted under the usual management of this disease"— he i^ speaking of gonorrhoea! ophthalmia — "chat I should certainly employ the local astringent, if I met with a case favourable for the trial ; i. e., where the affection had not extended beyond the conjunctiva. Blood-letting might be resorted to at the same time ; in moc^ cases, however, our aid is not sought until the cornea has become affected, and it is therefore too late for the astringent plan." But he subsequently added a note, to the effect that after the statement I have just quoted was written, he had employed the caustic solution in two cases of conjunctival inflammation with the best result. Mr. Guthrie's plan, therefore, you ought to be acquainted with. After many trials, he has arrived at the conclusion that the best appliance, in this formidable complaint is an ointment, made by mixing ten grains of the nitrate of silver, reducec tu an impalpable powder, with a drachm of hog's lard. This is what he calls his ten-grain ointment. Before applying it to the diseased eye, the discharge must be well cleansed away Dy a solution of alum ; then the ointment having been inserted beneath the lids, they are to be moved freely up and down, so that the whole conjunctiva may get its due share of the remedy ; and that it has done so is shown by its turning white. If the surface does not turn white, the ointment has not been sufficiently applied, and will iioi answer the purpose. If we wish to be quite sure, he says, we turn out the eyelids, and rub the ointment on them. This application gives pain, which lasts for half an hour or an hour, or more. " Warm narcotic fomentations may be em- PURULENT OPHTHALMIA. 195 ployed to relieve uneasiness, and opium given to allay pain, and to obtain sleep ; while a solution of alum, in the proportion of a drachm to a pint should be injected from time to time into the eye, to clear it ; but should the patient sleep, he must not be disturbed. A mild ointment may be applied to the edges of the lids at night, to prevent their stickin'^ to^Tether. The next morning the discharije is again to be re- moved and the ointment to be reapphed ; for on no account should the action we are desirous of exciting be allowed to cease." Of course Mr. Guthrie means it is not to be suffered to cease prematurely. This, with free but not excessive venesection, is the substance of his peculiar mode of treating purulent ophthalmia ; and it appears to have been eminently prosperous in his hands. I have been informed, by one of yourselves, that purulent ophthalmia has been successfully treated, on a large scale, in Manchester, by applying the nitrate of silver, in substance, to the surface of the conjunctiva; that this gives less pain than the ten-grain ointment, though perhaps it may require to be oftener repeated. I say I have never seen this method of Mr. Guthrie's carried into effect ; but after what I have myself witnessed of the intractable and destructive nature of the dis- ease, under the treatment ordinarily adopted before his ointment was devised, I will say also that were I so unfortunate as to be attacked v/ith severe purulent ophthalmia, I should desire to have the caustic applied as soon as possible, and to be freely bled at the same time. There are some minor points in the treatment that require a cursory notice only. Some persons, and Mr. Guthrie among the rest, recommend the exhibition of mercury, so as to affect the gums. Now I beheve that mercury is quite useless in this complaint; and if useless, mischievous. The disease is too rapid to be over- taken by the mercury, and if you could obtain the specific influence of that mineral in time, i. c, before any of the destructive effects of the inflammation were accom- plished, you would do no good thereby. This is not the kind of inflammation over which mercury exercises any useful control. Mr. Lawrence tells us that he hag seen both the ordinary purulent, and gonorrhoea! ophthalmia, proceeding apparently unchecked, under the full mercurial action. Practical men are not agreed about the propriety of scarifying the conjunctiva when it is swelled and elevated by chemosis. Mr. Lawrence objects to it, as likely to increase the local iritation ; a disadvantage not compensated by the quantity of blood discharged from the divided vessels. Dr. Mackenzie recommends it, stating that the incisions will bleed copiously, and greatly allay the symptoms. Who shall decide in this puzzhng discrepancy of opinion ? Mr. Guthrie's caustic ointment would, I presume, supersede any other meddling with the inflamed surface. But when the question happens to lie between scarification and no scarification, I should give my vote for scarifying: not because I think any useful depletion of the blood- vessels could be brought about by that measure, but because, if properly performed, it would evacuate the serous effusion from the areolar tissue between the conjunc- tiva and the sclerotic, which effusion constitutes the chemosis, and hastens, if it does not cause, the sloughing of the cornea, by the mechanical pressure that it exerts around it. Are blisters of any use? Hear Dr. Mackenzie. "Counter-irritants are highly serviceable in this disease, and ought always to be employed. There is generally a marked change in the quantity and appearance of the discharge from the eye, as soon as a counter-discharge is established by blisters on the temples, nape of the neck, or behind the ears." But listen to Mr. Lawrence. "Experience does not warrant us in ascribing much efficacy to blisters^ Now the truth is, I believe, thai during the active stage of the disease, blisters are not of any use ; but that in the more advanced and chronic periods, they are. Indeed, Mr. Lawrence admits thai they may be regarded as auxiliary measures, and resorted to after antiphlogistic means. I agree with the same gentleman in thinking that no reliance is to be placea, m gonorrhoea! ophthalmia, upon any attempts to reproduce the urethral discharge , ' indeed, in most cases it is not suspended. 196 DISEASES OF THE EYE. Although I have not mentioned purgatives, you will conclude that they form a very proper and necessary part of the treatment during the activity of the com- plaint. After what has already been said of purulent ophthalmia in the adult, and of gonorrhceal ophthalmia, it will not be necessary for me to take up very much of your time in speaking of purulent ophthalmia as it occurs in newly-born children. This is a very common disease : it is very serious when neglected : it is very eanly managed when it is seen and treated in time. These are all reasons why you should make yourselves familiar with the complaint, and with the mode of curing it. You may perhaps never have occasion to treat a case of purulent ophthalmia in the adult : you are sure to be consulted about the purulent eye of infants, the oph- thcdmia neonatorum. The importance of the disorder is apt to be overlooked by mothers and nurses ; they say the baby has a cold in the eye, which will go off; and they wash it perhaps with a little of the mother's milk, or some such insignificant fluid. Meanwhile the eyelids swell, the mischief that is going on beneath them is concealed from sight, and when at last a medical man is consulted, he too often finds that one of the eyes has perished, or both : the cornea has sloughed or become opaque, or protrudes, and constitutes what is called staphyloma ; prolapse of the iris has taken place ; or the coats of the organ have shrunk up. The inflammation usually comes on about three days after the child is born, although it may commence later. It is confined, at first, to that part of the mem- brane which fines the lids. Their edges are observed to stick together when the infant wakes ; there is more intolerance of light, apparently, than is suffered in the analogous disease of adults. The little patients cannot indeed tell us their sensa tions by words, but they express them significantly enough by keeping their eyes shut, by knitting their small brows, and by turning their heads away from the light. At length the inflammation extends to the conjunctiva that covers the eyeball, the eyelids swell, sometimes enormously : and an astonishingly copious discharge of pus takes place. By the adhesion of the edges of the lids the puriform matter is sometimes pent up, causing them to protrude ; and when they are separated it escapes in a profuse hot gush. The eyelids are sometimes everted during the cries and struggling of the little sufferer, and their mucous surface is then seen to be villous and shaggy, and of as bright a scarlet as you ever saw the injected mucous membrane of a foetal stomach. At last those destructive consequences to the eye take place which I have already mentioned. The disease, however, may continue for eight or ten days without any affection of the transparent parts ; and so long as these remain uninjured, the eye is safe, provided that proper treatment be adopted. This disease is probably much the most fertile source of blindness with which we are acquainted. It is believed to originate most commonly, if not always, in con- tajrion. We might, perhaps, expect this from the analogy of the severe inflamma- tion of the same parts in adults. And it is a matter of fact, that in a very large number of cases the mother has been affected, at the time of her confinement, with some kind of vaginal discharge — leucorrhoea, or gonorrhoj^a ; and the eyes of the children are exposed to these morbid secretions, as they are brought into the world. The circumstance of the disease commencing so regularly on the third day, is greatly in favour of the supposition that it results from inoculation of the eyes by the unhealthy fluids of the mother. The discharge from the infant's eyes has been ascertained to be highly contagious. Dr. Mackenzie mentions a lamentable illustra- tion of this fact, which fell under his observation at the Ej-e Infirmary, in Glasgow. An infant and its grandfather became his patients there at the same time ; the latter having been inoculated from the former. Both were so severely affected that the infant had one eye left in a state of total, and the other of partial staphyloma : while m each eye of the old man, the greater part of the cornea remained opaqae, and ndherent to the iris. However, the disease certainly occurs in the infants of mothers who seem to be PURULENT OPHTHALMIA. 197 nealthy, and who deny that they have any unnatural discharge. It may probably be brought on, sometimes, by bad management on the part of the nurse : bj'' expo- sure soon after birlii to draughts of cold air, or to the injurious influence of a hot and jright fire ; or by the introduction of soap into the eye in the primary ablutions, or vif gin, whereof the lower classes, in some absurd persuasion of its strengthening virtues, are wont to bathe the unlucky infant's head. The disorder is observed to ')e mosc common in damp and cold weather ; in low crowded places ; and among Jfe chiluren of the poor. [The reir.aiks of Dr. Watson on the causes of purulent ophthalmia in children, present a brief sumniaij" of all that is positively known in relation to the subject — for further details, '>earing more t8^>f!cially upon the question of the production of the disease in the infant by H. morbid vaginal discharge existing in the mother at the period of its birth, and the circum- stances generally, under which the affection most frequently presents itself, the reader is leferred to the Ed-vor's Treatise on the Diseases of Children. We have not met with a single lact, during a long aud somewhat extensive practice, in proof of the communication of the i-urulent ophthalmia ciI infants by contagion. — C] One striking difTere^TiCe between the disease as it exists in adults and in newly- born children I have iilready adverted to; viz., its rapid and often uncontrollable progress in the former; and the facihty with which it yields to suitable and timely treatment in the latter. If a child is brought to you with purulent ophthalmia, and you are able to separate ihe lids sufficiently to obtain a glimpse ^f the cornea, and perceive that it is still brilliant and uninjured, you may confidently tell the anxious mother thai, with due care on her part, her child's eye is safe. If the cornea has lost its transparency, it is still within the reach of recovery, but the chances are against it : if you cannot get a sight of the cornea at all, you will do wisely to give a doubtful prognosis, or even an unfavourable prognosis ; for such is the ignorance of the vulgar (and I include both rich and poor under this phrase) that if they are not forewarned of the danger, they are very apt to attribute the blindness that ensues to your stuff, as they call it. In the severer forms and stages of the complaint, if the lids be very much swelled and red externally, and especially if you are unable to obtain any satisfactory view of the cornea without usinsr a deo-ree of violence that might be hurtful, it will be right to apply a leech. In this case it may be placed upon the centre of the tumid upper lid ; and you should, whenever that is possible, stay by the little patient until the animal drops off, and the bleeding ceases ; for sometimes the bleeding is difficult to stop, and must not be trusted to the care of the nurse ; and the loss of blood occa- sioned by the bite of a single leech will often blanch the infant's skin, and make you fear that the depletion, slight as it is in actual amount, has yet been too much. The child's bowels should be emptied by a little castor oil; and a lotion, made by dis- solving two grains of the acetate of lead in an ounce of water, may be applied to the inflamed organ. In less severe cases, and I believe in all cases in which you can see the uninjured cornea gleaming through the pus that bathes it, it will be quite sufficient to keep the infant's bowels open with magnesia; to apply a little lard along the edges of the lids, that they may not stick together ; and to inject carefully into the eye, beneath and between the lids, a solution of alum ; in the ratio of four grains to one ounce of water. Such, Mr. Lawrence tells us, was the treatment in forty-nine cases out of fifty at the London Ophthalmic Infirmary when he was surgeon to it: no other means being used than magnesia internally, and the solution oi' alum locally : and out of many hundred instances he scarcely recollected one that suffered in any respect, if the cornea were clear when the infant was first seen. I had, for a con- siderable period, the advantage of watching Mr. Lawrence's patients under that treatment; and the result of it was so entirely and uniformly satisfactory, that I should never think of employing any other. U the eye became at length insensible to the stimulus of the alum, a solution of the nitrate of silver, (from one to four grains in the ounce of water.) was substituted with advantage. Mr. Guthrie Uie.s I fancy, his cau.stic ointment; but I am sure that the simple and less severe plan I have been describing is quite sufficient. r2 198 DISEASES OF THE EYE. [A very excellent application, in cases of the purulent ophthalmia of new-born infants, is a strong infusion of ccmmon tea — when this cannot be introduced between the lids in any other manner, it may be carefully injected by means of a syringe. — C] There is just one more disease belonging to the conjunctiva, that I wish to brin-r before you ; and then I have done with the morbid affections of this external mem- brane of the eye. It has received several names ; sometimes it is called pustular ophthalmia, from the appearance of little pustules upon the surface of the organ. Dr. Mackenzie, who looks upon it as an eruptive disease, aftecting the conjunctiva not so much as a juucous membrane, but rather as a continuation of the skin, names it /7/?/i/r/o??//f/?- ophthalmia. It has also acquired the title oi .scrofulous or strumous ophthalmia, from its continual occurrence in children of a scrofulous habit, and its verv frequent association with scrofulous disease in other parts. It is a disorder of childhood, and it is so common a form of disorder, that, of ten cases of inflammation of the eves in young persons, nine will be of this kind. I shall call it strumous ophthalmia. It is a form of ophthalmia that differs in many striking points from those which we have been considering. In the first place, it is intimately connected with the scrofulous constitution ; the peculiarities of which I formerly explained. Akhough a disease of children, it is not a disease of infants at the breast. It is most prevalent from the time of wean- ing to about the age of eight. 1 mentioned to you, in a previous lecture, the remark- able fact — showing the strong influence of unsuitable or insufficient nourishment in developing scrofulous disease — that when asked to prescribe for children having^ bad eyes, you will find, in nineteen cases out of twenty, that you have to deal with pu- rulent ophthalmia if the child be still at the breast, and with strumous ophthalmia if it have been weaned. The leading symptoms of this disease are, slight redness; great intolerance of light; the formation of little prominences or pustules on the surface of the conjunc- tiva ; and specks which are the resuk of these. The complaint sometimes occurs in one eye alone, oftener in both ; but then one eye is generally worse than the other. Mere catarrhal ophthalmia is apt to degenerate into this affection in scrofulous children. After seeing two or three cases of strumous ophthalmia, you cannot fail to recognize it whenever you meet with it again. The redness has this peculiarity, that it is slight and partial. Sometimes it is alto- gether confined to that part of the membrane which lines the eyelids: generally a few vessels, collected into little bundles, are seen proceeding from some point of the circumference — more commonly from the angles of the eye than from any othei point — towards the cornea : the vessels are evidently superficial, often prominent. These scattered bundles of vessels (sometimes there is but one) stop when they reach the cornea, or occasionally encroach a little upon it ; and where they stop, the small elevations of the membrane may be observed, which are called pustules. This is the most common situation of these elevated points, just at the line of junction be- tween the sclerotica and the cornea, or near that line. Sometimes, however, vou may see one or two near the centre of the cornea. They are smaller in size when th' y appear on the cornea, than when they are situated near its edge. These pimples may be absorbed, and leave behind them a temporary white spot; morf frequently they break and form little ulcers. When these ulcers are beyond the cornea they are of less consequence : when they are situated upon it, they be- come sources of danger in two ways ; they may penetrate the cornea, and let out the aqueous humour, and cause prolapsus iridis and various other mischief; or they may leave, after healing, a permanent white opaque speck, (called leucoma,) which, according to its size and its exact place, will interfere more or less with the patient's vision. The intolerance of light is a very prominent symptom of this disease, and some- 'imes it really is the only sy^mptom that manifests itself. It is curious that this mabiiity to endure a bright light bears no regular or definite proportion to the inten sity of the other symptoms. It is not that the eye is painful when protected from tKe light ; but that the access of the ordinary light of day occasions extreme -.ufTer STRUMOUS OPHTHALMIA. l90 ing ; the eyelids being spasmodically closed and the orbicular muscle in such strong, an^ appareruiy involuntary action, as effectually to resist all attempts at opening them. Children that are affected with this disease, carry it legibly written in their physiognomy. Although you cannot tell what is the actual condition of the eye without examining it, you can tell, as soon as you look at the patient, what is the nature of the inflammation under which he is suffering. The child's brow is knit and contracted, while his alae nasi and his upper lip are drawn upwards; those muscles of the face (they happen to be also muscles of expression) are instinctively put in action, which tend to exclude the light without shutting out the perception of external objects; producing a peculiar and distinctive grin. In the severer cases the child will skulk all day in dark corners ; or if in bed, will lie upon his face, or under the clothes ; and while the hght is thus kept off, he does not appear to suffer. If brought towards a window, he holds his head down, and presses his hands or arms over his eyes. When you attempt to open his eye to examine it, a profuse discharge of scalding tears takes place : these pass partly into the nose, and excite fits of sneezing, and partly over the skin, which they sometimes inflame and excoriate ; and then, frequently, pustules arise, and produce a discharge that crusts over the cheek and extends to the forehead and temples. This is called crusta lactea, and is very characteristic of the scrofulous habit; it occasionally spreads over the whole body. You might suppose, from this extreme intolerance of light, that the retina was inflamed, or in danger. But it is not so. The affection of the retina is purely sym- ])athetic, and need not of itself excite any fears about the vision. Towards dusk, indeed, in the twilight, the child can generallj^ open his eyes, and then is quite as able to see as if he were well. Dr. Mackenzie endeavours to explain the connection of intolerance of light, spasmodic contraction of the lids, and lachrymation, even when there is but little visible redness, by the distribution of the lachrymal nerve; which, after supplying the lachrymal gland, goes to the conjunctiva, and to the orbi- cularis palpebrarum. We have the same set of symptoms when a bit of dirt gets into the eye, and fixes itself beneath the upper lid. When little or no redness exists, this extreme intolerance of light has been called photophobia scrofulosa. With this strumous affection of the eye there are usually present other evidences also of scrofulous disease. Swelling and redness of the alee nasi and upper lip ; enlargement of the absorbent glands about the neck ; eruptions upon the head ; sore ears ; a large and hard belly ; disordered bowels ; offensive breath ; grinding of the teeth ; and general debility. And the ophthalmia will alternate sometimes in seve- rity with some of these other local scrofulous complaints ; getting better as they get worse, and vice versa. LECTURE XIX. Strumozis Ophthalmia, continued. Recapittdation. Treatm.ent of Strumous Oph- thalmia. General Remarks on Conjunctival hijlammations. Iritis: its Symp- toms and Treatment. Causes of Iritis. When we separated yesterday, I was about to describe the treatment which has been found by experience to be the best for reheving strumous or phlyctenular oph- thalmia. Before I take up the subject where it was then dropped, let me briefly remind you of the character and principal symptoms of the disorder. It is a form of inflammation of the conjunctiva, to which scrofulous children, from the time they are weaned, to about the age of eight, are extremely liable. It may occur consider- ably later. Sometimes it is the first and only token of the existence of the scrofulous diathesis ; generally it is observed in children who bear other marks of the strumous habit, and are afflicted with other forms of strumous disease. Its symptoms are — first, slight vascularity ; the redness being partial, and proceed- ing from one or more fasciculi of superficial vessels, which advance from the circum ference of the visible part of the eye towards the cornea, where they usunllv ston ■ 200 DISEASES OF THE EYE. sometimes, however, they pass a liltle beyond its edge. At the extremities of these fasciculi, upon or near the line of separation between the cornea and the sclerotica, small prominences appear, which are sometimes absorbed, sometimes break and form ulcers. Less frequently the phlyctens are situate towards the central part of the cornea. Secondly, with this partial vascularity and these pimples, and sometimes even without them, there is extreme intolerance of light. The pain produced by exposing the eye to the influence of light imparts a characteristic expression to the countenance of the suffering child. Tears flow over the cheek, and inflame it often, and give rise to the eruptive appearance termed crusta lactea: or, from its somethies covering the cheek like a mask, porrigo larvalis. I may add to this summary of what was stated in the last lecture, that sometimes the vessels which pass along the conjunctiva and over the cornea, instead of leading to pustules, extend laterally : so that several bundles of vessels unite by their mutual ramifications ; and that part of the conjunctiva which covers the cornea becomes ihick, as if it were darned; and more or less opaque. Indeed, the greater portion of the whole of the corneal covering may thus be rendered patchy and vascular. The appearance presented by the eye under these circumstances is called pannus. You will readily believe, from what has been said of this complaint, that it is an obstinate and troublesome one. Even when it has been cured it is very apt to recur. The scrofulous habit on which it depends w-e cannot get rid of; and when ever the exciting causes of scrofulous diseases come into action, this form of scrofula is very prone to declare itself, at the period of hfe which I have already mentioned. More good is to be done bj^ general treatment, applied to the system at large, in this form of ophthalmia, than in those we were occupied with before ; and this is one strong point of difference between them. In the first place we must endeavour to correct that unnatural condition of the whole system, and especially of the digestive organs, which is commonly so striking a concomitant of the local disease. It will be proper to clear out the bowels in the outset, and occasionally, by a mercurial purge ; and to regulate them at other times by laxatives, such as rhubarb, or the confeclio sennse, or castor oil. The recovery will be greatly promoted, also, by those measures which are found to benefit the general health in such constitutions ; M-arm clothing, fi-equent ablution of the bodv, nourishing though plain food, the respiration of a pure atmosphere, change of air, and regular exercise. In addition to these measures, tonic medicines should be administered ; the pre- parations of iron, for example, or the dilute mineral acids : but the best remedy of this kind is, undoubtedly, the sulphate of quina. This may be given to a child in grain doses, three times a day, dissolved in water, with a drop of the dilute sulphuric acid, and some syrup of orange-peel. Dr. Mackenzie, in particular, has put this medicine fairly to the test, having employed it in a very large number of cases with the happiest results. In most of his patients he declares tliat it acted like a charm, '• abating, commonly, in a few days, the excessive intolerance of light and profuse epiphora; promoting the absorption of phlyctenula?, and hastening the cicatrization of ulcers of the cornea." And Mr. Lawrence adds his testimony to the same effect ; and his experience in this disease, like Dr. Mackenzie's, has been large enough to make it highly valuable, A few words will suffice to explain the kind of local treatment that has been found useful. You may feel tempted to apply leeches round the eye. This is sel- dom requisite, except when there are more redness and pain than common, rxnd the tongue becomes white, and the skin hot. Certainly you must not take the intole- rance of light as a fit indication for the use of leeches. Abstraction of blood rather uggravatoS that symptom ; apparently by increasing the irritability of the retina. Warm fomentations are generally very comfortable to the patient's feehngs. When the general disorder of the system has been somewhat rectified, local stimu- .unts and astringents are of great service. The vinum opii and the solution oi lunar caustic are the best. These are often tedious cases, and therefore it is necessary nat you should be aware of one great objection to the long-continued em))loyment • •' the nitrate of silver wash, wliich objection has been pointed out by Dr. Mac- STRUMOUS OPHTHALMIA. 201 kenzie. It is apt (but only when frequently repeated for a long time together) to stain the conjunctiva of an indelible olive colour. For this reason the vinum opii is to he preferred in slow cases, and in cases where frequent relapses happen. The good effects of either of those preparations are very striking ; they diminish the irritabihty of the eye, and promote the healing of the ulcers. The red precipitate ointment, and the citrine ointment of the Pharmacopeia, diluted, are also found beneficial. [According to Dr. Glover (Pathol, and Treat, of Scrofula), there appears to be little doubt of the success of an infusion or decoction of walnut leaves in scrofulous ophthalmia. — C] Counter-irritation is another local measure, which is of undoubted utility in this complaint. A great change for the better in the state of the organ often occurs, almost suddenly, upon the rising of a blister placed behind the ear, or at the back of the neck. And issues in the arms are not only serviceable in promoting the cure, but have a marked effect in many children, in preventing relapses. Mr. Wel- bank, in his notes to Frick's Treatise on Diseases of the Eye, states that he has seen chronic strumous ophthalmia, of seven years' duration, quickly and effectually relieved by an issue in the arm. " Having once (says he), in the case of a boy in Christ's Hospital, directed the healing of an issue whicn had been made above twelve months, I found the immediate consequence to be a relapse of strumous inflammation and ulceration of the cornea, resisting every measure but the renewal of the issue. He suggests, also, (what parents are sometimes more willing to assent to,) the advantage of making counter-irritation by piercing the lobe of the ear, and inserting a ring or silk ; and " a very convenient form of vesication will be found in the application of a strong thread, smeared with the emplastrum cantharidis, and firmly- tied behind the ear at the angle of its reflection." When ulceration is going on in the cornea, and threatening to penetrate it, the progress of the ulcer may be checked by touching its surface once in two or three days with a pencil of lunar caustic which has been scraped to a fine point. When the more urgent symptoms have abated, and the discharge of hot and irritating tears has ceased, the crusla lactea may very easily be got rid of. The crusts are to be removed by a light poultice, or by warm water; and then the part must be bathed from time to time with a lotion made by mixing the oxide of zinc with water; a drachm to four ounces is the proportion I am in the habit of prescrib- ing. If rose-water be used instead of common pump-water, the prescription will be thought the more elegant. This lotion will speedily dry up the discharge, and in a short time no vestige of the ugly-looking crust will remain. Parents are highly delighted and very thankful when you thus accomplish the removal of a large dis- figuring and disgusting scab, which they naturally enough felt apprehensive might leave behind it a corresponding scar. But it is quite superficial. I have now done with the exterior membrane of the fore part of the eye — with its mucous membrane. In examining some of its diseases, we have had the oppor- tunity of noticing several things which illustrate the pathology of the mucous tissues generally, and which exemplify the influence of other circumstances also, as well as of peculiarities of tissue, upon the morbid processes to which these membranes are obnoxious. We have seen that the mucous surface of the eye readily enough takes on inflam- mation, under vicissitudes of external temperature, and from the agency of other atmospheric conditions ; that the inflammation is apt to spread, often rapidly, over the whole surface of the membrane ; and that, in some cases, it may be strictly limited for a long time together, or entirely, to the mucous tissue in which it began; but that when intense, or under special circumstances, it may dip through and extend to the subjacent textures : that, on the other hand, the inflammation some- times occupies separate specks only of the membrane, and then is more likely to penetrate to the deeper seated tunics: that although the membrane is folded upon itself, so that different portions of it are mutually in apposition and contact, these opposing surfaces do not become adherent to each other under inflammation : on the 202 DISEASES OF THE EYE. contrary, that they readily pour forth pus. This tendency to the formation of pus I formerly showed you to be commonly observable, whenever the air finds free access to the inflamed part. The pus thus poured out possesses the remarkable property of exciting the same kind of inflammation when placed in contact with any healthy mucous membrane of the same or of another individual : whether it be the conjunc- tiva of the eye, or the internal hning of the urethra. The pus, in short, acts locally, upon certain parts at least, as a poison. And we perceive, in this fact, how a disor- >der that originates in common and accidental causes may become capable of propa- gating itself indefinitely — may become, in one word, contagious. We have seen also that the most intense inflammation may occur in this membrane, without exciting much or any constitutional disturbance ; an illustration of the fact that the inflamma- tion of mucous membranes is not so prone to light up fever, is not in general attended with so much pyrexia, as inflammation of some other tissues, and especially of the serous and fibrous tissues: and in proportion as this constitutional sympathy with the local disease is small or absent, so the influence of general bleeding upon the inflamed part is slight or ineffectual. The effect of a new and strong local irritation, in alter- ing or superseding- the original inflammation in some cases, has been illustrated in the treatment of purulent ophthalmia as it occurs in the adult subject. The influence of age in modifying the phenomena, and in qualifying the plan of treatment, has been made perceptible in the differences noticed in these respects between purulent ophthalmia in infants and in grown-up persons. We have witnessed, too, the remarkable characters impressed upon inflammation of the very same part, by the presence of the scrofulous diathesis. We shall hereafter meet with numerous examples of chronic inflammation, and the deposition of tubercular matter, and the formation of ulcers in consequence of the elimination of that matter, in other mucous membranes. AVhether the phlyctena^, or pustules, which appear upon the surface of the eye in strumous ophthalmia, result from a similar separation of tubercular matter from the blood-vessels, near the extremities of which these prominences are placed, has not been clearly ascertained. One other lesson we have learned from this review of conjunctival inflammation, viz., that general bleeding, carried so far as to produce syncope, will sometimes completely empty the capillaries of an inflamed part of the red blood wherewith they were, just before, so turgid. I shall next request your attention to a part of the organ which is strictly internal — to the iris : that thin curtain, with a circular aperture nearly in its centre, which hangs between the cornea and the crystalline lens, and is bathed on both sides by the aqueous humour. This little part, the office of which is to regulate the quantity of light admitted to the retina, is of exceeding interest in respect to its morbid as well as its healthy conditions. It is frequently the seat of inflammation : and, small as it is, the inflammation seems to be entirely confined to it, or to the surfaces im- mediately before and behind it. No doubt, with inflammation of the iris, there is in many cases inflammation of the choroid and retina also, and of the sclerotica. But the inflammation seems to make the iris its point of departure, and there it works its most striking changes. We cannot see so well Avhat is the actual condition of the choroid and retina ; but we have this proof, either that thej'^ do not always partici- pate in the disease, or that they often suffer less than the iris ; viz., that when the natural pupil has been closed up by lymph, and a new or artificial one is formed, vision is frequently restored. The little cavity across which the iris is vertically stretched, is lined by a smooth membrane, the source of the watery fluid always contained in the cavity. This membrane is analogous in its smoothness, in its forming a shut sac, and in the nature of its secretion, to the serous membranes met with in other parts of the body ; it is analogous also to the serous membranes, in its behaviour under inflammation. It is, in fact, the serous membrane of the eye. Now we have the means of inspecting a portion at least of several of the mncoits surfaces of the body ; but this serous cavity, constituting the anterior chambers of the eye, is the only serous cavity into vvhich we have the privilege of looking, and of noting what is going on, when the mem- hrane that forms its boundary is inflamed ; and this it is that makes iritis, to me, one IRITIS. 203 of the most interesting of all diseases. There is no aingie part of the body from which vou can derive so much instruction concerning some of the minuter processes of inflammation, and concerning ♦he power of certain medicines over those pro- cesses, as you may by watching a few examples of inflammation of the iris. All the changes which occur in iritis depend upon the circumstance that the inflammation, like that of the serous membranes generally, is of the adhesive kind ; i. e., is attended with the eflusion of coagulable lymph. By means of this lymph the form and the colour of the part are changed; the size and figure of the pupil undergo alterations, or that aperture is completely closed up ; the motions of the iris are limited, or entirely put an end to. The symptoms which characterize inflammation of the iris are very obvious. To be perceived and understood, they require only to be looked at. Yet they long escaped notice, and even now are not always so carefully studied as they deserve to be. Not a great while ago I had to convince a surgeon of some pretensions, that he did not know this disease when he saw it. And English surgeons and physicians were all of them ignorant even of its existence as a distinct disease, until a most excellent account of it was published by a German, Schmidt, in the first year of the present century. What are these plain and obvious symptoms that were so long overlooked, or that were not understood when seen? They are the following. I will first enumerate them, and then speak of each rather more particularly. Redness of the sclerotica ; a change in the colour of the iris itself, and in its general appearance ; irregularity of the pupil, produced by adhesion of the iris to the neighbouring parts; immobility sometimes of the pupil from such adhesion ; a visible deposition of coagulable lymph. All these changes are apparent and conspicuous. Scientific wn'iters term them ob- jecfive symptoms. Then there are also the subjective symptoms, of which the patient alone is conscious — impaired sight ; pain in the eye, and round it. The redness is such as I formerly described as resulting from the vascularity of the sclerotic. The cornea is surrounded by a zone of fine straight converging pink lines, very different in appearance from the tortuous, anastomosing, scarlet blood- vessels of the inflamed conjunctiva. These hair-like converging hues slop abruptly at the edge, or just before they reach the edge of the cornea; they dip through the sclerotic, in fact, to go to the iris. The vascular zone, therefore, is well defined in front, while it becomes fainter from before backwards, and is gradually shaded ofl"; the posterior portion of the sclerotic being generally pale. As the disease advances, and in violent cases, the more superficial conjunctival vessels also sometimes enlarge, and mingle their tint of redness with that of the sclerotic, and more or less confuse or conceal it. Now this red zone or halo continues as long as the inflammation of the iris continues, and disappears when that ceases. It is an important symptom therefore. The change in the colonr of the iris itself is also a remarkable circumstance. You know that what is called the colour of the eye is simply the colour of the iris. When the lymph begins to bo effused into the texture of this coloured part, it deep- ens, and at the same time alters, its tint. A gray or blue eye is thus rendered yel- lowish or greenish. A dark eye presents a reddish tinge. The change is such as would be produced by a mixture of the colour of the lymph with that which is natu- ral to the iris. But besides a variation of colour, the peculiar brilliancy of the sur- face is spoiled. It becomes dull and tarnished, as it were, and the fibrous arrange- ment, Avhich is usually so evident, is confused or gone. The change commences at the inner or pupillary margin of the iris, and extends gradually towards the outer or ciliary edge. This is a symptom which you can scarcely overlook. It is ren- dered certain and unequivocal by comparing the sound eye with that which is inflamed. The change of colour which I have been describing is occasioned by the effusion of lymph. But the same event of inflammation leads to various other changes not less strikincr and more important, in so far as the functions of the organ are con- cerned. The lymph becomes visible upon the surface of the iris. Its precise ap- pearance varies considerably in different cases. Sometimes it presents htllc spou> 204 DISEASES OF THE EYE. bke freclcles, or specks of rust : or a thin stratum of the same colour is deposited. Sometimes it exhibits the appeai-ance of drops, or (as the}^ have improperly been called) tubercles, embossing the surface, and projecting from its pupillary edge. These are commonly of a yellowish or reddish-brown colour, and they vary in mag- nitude from the size of a small pin's head to that of a large shot. There are seldom more than two or three of these masses. The lymph thus effused upon, or thrusting forward the surface, is confined almost always to that part of the iris which is near- est to the pupil, to the annulus minor; while its ciliary portion, or annulus major, is dull and clouded. Sometimes, when the inflammation is very violent, or the dis- ease has been neglected, actual suppuration takes place. A reddish-yellow promi- nence arises from the surface of the iris, and at length breaks, and discharges matter which sinks down to the bottom of the anterior chamber, and presents the appear- ance that has been called hypopyon. All these changes, I say, become perceptible near the margin of the iris ; its free edge which, in the natural state, is clear and sharp, becomes rounded and blunt : and at the same time the pupil often begins to lose its jet-black colour. Another very common consequence of the effusion of lymph from and upon the surface of the iris (from its hinder surface, that is, which is called the uvea, or from its pupillary edge), is its adhesion to the capsule of the crystalhne lens, which lies, you know, behind the iris and very near it. And the pupil itself is apt to become blocked up by lymph. The motions of the iris are seriously impeded by the mere effusion of lymph into its texture. At first it moves sluggishly under variations of the hght ; gradually the pupil contracts, and becomes fixed and motionless. The adhesion of the iris to the capsule of the lens still more decidedly restrains the action of the part. When it adheres at one or more points of the margin, and remains free elsewhere, the pupil is deformed ; loses its circular shape; becomes angular ; and this deformity is the most marked when the eye is examined either under a weak light, which allows the pupil to dilate, except at the points where the iris is tied down to the lens ; or under a very strong light, which forces the free portions of the margin, and those onl}'', to approach the centre. Still more palpable does the alteration of figure become when the pupil is artificially dilated. Vision is always impaired in this complaint : partly because the posterior tunics of the eye are liable to be implicated in the inflammatory process ; partly by the detriment done to the proper function of the iris, which should duly measure the quantity of light admitted to the retina; partly by the presence of more or less lymph, filling up the pupil ; and partly by a change, not yet mentioned, which is apt to take place, especially in severe cases, in the cornea, and perhaps in the aqueous humour. The cornea becomes hazy and dull, and loses its bright polish. It looks like a piece of glass that has just been breathed upon. It has been thought (on the ground of analogy chiefly) that the aqueous humour grows turbid under the inflam- mation of the membrane that secretes it ; just as serous effusion into the pleura is often found to be troubled and thick. But there is no sure evidence that this is the case. While the cornea remains transparent, the aqueous humour is seen to be clear ; when the cornea is dim and semi-opaque, we cannot distinguish the stair of the aqueous humour. Acute iritis is attended with pain and intolerance of light. To the latter circum- stance is probably owing the contraction of the pupil during the progress of the inflammation : and then the lymph fixes the pupil in that slate of smallness and contraction. There is pain in the eyeball itself, and in the parts about the eye, the brow and temple, most severe at night. There is much variety, however, in regard to the pain. Sometimes it is constant and severe, but still more agaravated in noc- turnal ])aroxysms. Sometimes, even when the quantity of mischief that is visible IS very great, scarcely any pain at all has been experienced. The same remark applies to the constitutional symptoms. In some instances these are but slightly pronounced ; but in most cases, particularly in acute cases (for iritis, as I have hinted before, is sometimes a chronic disease) there is a good deal of fever and headache, tne pulse is full and hard, and the tongue white, and the sleep is broken. IRITIS. 205 If the progress of the inflammation be not checked, it extends itself beyond its origmal seat. It creeps from the pupillary margin to the cihary ; and thence it passes on to the ciliary body, to the choroid coat, and to the retina ; and as this takes place, the pain and the pyrexia increase, and blindness is usually the result. The deUcate texture of the retina is spoiled for ever. I have thus described the phenomena of iritis generally : and I will next consider, in the same manner, the treatment which it requires. It will afterwards be neces- sary for me to mention certain modifications of the disease, in respect to its rate of progress, its causes, and the circumstances under which it occurs. I say it will be necessary to mention these modifications, because they require a corresponding adjustment of the plan of treatment. When we have to deal \vith iritis alone — that is, when the inflammation and the changes to which it may have led, are confined to the iris — the disease is always, I believe, manageable ; and affords a beautiful instance of the power of well-directed remedial measures. We cannot always tell whether the inflammation has been restricted to the iris or not. We have three powerful weapons wherewith to combat iritis; blood-letting; mercury ; and a remedy that hitherto has not been mentioned in these lectures, belladonna. If I were restricted to the use of one of these means, I should choose mercury ; if to two, mercury and belladonna ; but the combined employment of the three has the most powerful effect in curing the disease ; and cases that have seemed almost desperate, have been retrieved and rescued by these remedies. With respect to blood-letting., I shall not run the risk of fatiguing you by dwelling at any length upon the mode in which it should be employed, or the indications for its adoption. I shall content myself with saying that the intensity of the local symp- toms, especially of the pain, — and the degree in which the general symptoms, the fever, and the hardness of pulse, are present, — offer the best measure, both of the necessity for bleeding, and the amount to which it ought to be carried. Both will depend somewhat also upon the strength and constitution of the patient. Bleeding from the arm till some decided impression is made upon the circulation; cupping from the temples ; or both these modes of taking blood, together or in succession, will often be required. At the same time active purgatives should be exhibited; and the whole of the antiphlogistic regimen strictly enforced. But bleeding, assisted by purgatives and the antiphlogistic regimen, will not cure the disease ; or it will not cure one case in a hundred. It will stop the inflamma- tion probably, but not till the organ has been spoiled. Such a termination cannot with any propriety be called a cure. We want not only to put an end to the inflam- matory process, but to repair the mischief which may already have been done. Yet bleeding is not to be despised or neglected because it is unequal to the cure of iritis. It is productive of direct benefit by abating the force of the circulation, and by checking the progress of the local inflammation : and it is productive of great indirect benefit by preparing the system to submit itself more readily and rapidly than it otherwise would, to the specific influence of mercury. Mercury is our sheet- anchor in this disease. After free blood-letting, then, or after such abstraction of blood from the system, or from the part, as the circumstances of the case may dictate, you must administer inercurij in the manner that I formerly recommended. The object is, in acute cases, to affect the gums as speedily as possible ; the soreness of the gums, and the peculiar fcEtorof the breath, being the tokens that the whole capillary system feels the specific influence of the remedy. Calomel with opium is, in most cases, the best form in which mercury can be introduced into the system ; the purpose of the opium being to prevent the calomel from running off by the bowels. Two, three, or four grains of calomel, with one-fourth, one-third, or one-half of a grain of opium, should be given every four, or six, or eight hours. Equal doses at equal intervals. Some persons prefer giving the calomel still more frequently ; one grain, for instance, with one-tenth, or one-eighth of a grain of opium, every hour. If the gums do not rise in the course of thirty-six or forty-eight hours, and a speedy eflTect 206 DISEASES OF THE EYE. is desirable, inunction of ihe mercurial ointment should be added. And in some cases mercurial frictions alone may be sufficient, and tiie most expedient. Or tiie hydnirgyruin cum creta, in five or ten grain doses. You may liave bled your patient freely, and purged him well, and yet, on lookinor into his eye, you perceiv^e the mischief to be still going on, and the deposition of lymph increasing. But the instant that his gums and breath acknowledge the spe- cific agency of mercury upon his system, a welcome change becomes visible; the red zone surrounding the cornea begins to fade ; the drops of lymph to lessen ; the iris to resume its proper tint; and the puckered and irregular pupil once more to approach to the perfect circle ; till, at length, the eye is restored to its original in- tegrit}', and beauty, and usefulness. I speak now of favourable cases. The changes for the better that I have been describing are sometimes rapidly accomphshed, sometimes slowly. If the disorder has been long neglected, irreparable damage may have been done ; the elTused lymph may have' become organized ; or firm adhesions may have been already contracted between the iris and the lens. But even in cases of some standing, when the inflammatory action has in a measure subsided, the use of mercury will sometimes greatly improve, sometimes altogether restore, the impaired vision. With the mercury, both before and while its specific influence is manifested, we combine the use o{ beJludonna. Doubtless you are all aware of the singular effect of this vegetable poison upon the iris. It dilates the pupil. Now it is of great importance in iritis to prevent that tendency to contraction which the pupil manifests. If we can artificially dilate the pupil, we may prevent the iris from forming adhesions with the capsule of the crys- wlline lens ; and if it has recently contracted such adhesions, we may, while the .ymph is yet soft, stretch or break them. And this power of artificially dilating the pupil we possess in the agency of belladonna, and of certain other narcotic vegetables. This remarkable efTect of the belladonna was first discovered, accidentally, by our countryman, the celebrated Ray. He tells us that a noble lady of his acquaintance applied a leaf of the plant to a small ulcer, suspected to be cancerous, just below one of her eyes. The pupil of that eye became greatly dilated, and the membrane remained motionless under the strongest light. This effect gradually subsided when the leaf was removed. But it took place on three several occasions, and was wit- nessed by Ray himself. Other vegetables have the same property : henbane, for exampk-", stramonium, and the cherry laurel. And there are others which have it not, although we might have expected that they would possess it, from the analogy they bear to the former in other respects. It has been ascertained that neither hem- lock, nor aconite, nor foxglove, nor opium, has any such power. Preparations of belladonna are chiefly, if not exclusively, employed in ophthal- mic disorders in this country. It is used in two ways. The extract is rendered soft and semifluid by admixture with distilled water, and then is smeared freely arouad the eye, upon the lids, and brow, and forehead. It is washed ofT after remaining an hour: generally it produces a marked effect upon the pupil. A more efficacious and speedy mode of dilating the pupil, is to drop a solution of the extract into the eye itself. The solution is to be made by rubbing down a scruple of the extract in an ounce of distilled water, and filtering the fluid through linen. Two or three drops of this solution are to be introduced between the ej'elids. Some very interesting experiments have been made in Germany by Dr. Rei- singer upon this property of belladonna and hyoscyamus, of contracting the iris — in other words, of dilating the pupil. The result of these experiments is given in the 24th volume of the Edinburgh Medical and Surgical Journal. Dr. Reisinger procured atropine and hijoscyamine, the active principles of the two plants, and made comparative experiments with these principles, and with the coarser extracts ; and he concludes that the former are much to be preferred to the latter. Thus, he dissolved a grain of hyoscyamine in ten minims of water, and introduced a small drop of the solution into the eyes of several dogs and cats. No irritation whatever uf the eye was produced in any instance, but the pupil was so much widened by IRITIS. 207 the application, that in an hour's time onl\' a small ring of the iris could be seen beyond the edge of the cornea; and after three hours, the pupil seemed as large as the cornea itself. The dilatation did not begin to diminish till after three days ; and the pupil did not recover its natural dimensions until the sixth day. Then he ap- plied a solution of the extract of hyoscyamus, made by mixing five grains with ten minims of water. This evidently caused irritation of the organ, which lasted from five to eight minutes, and was evinced by a discharge of tears, by the animal's shut- ting its eyes, and rubbing its eyebrows with its paws. Much less dilatation of the pupil followed, and continued not more than six or eight hours in dogs, and about twenty-four hours in cats. As soon as Dr. Reisinger had satisfied himself that the hyoscyamine had no injurious influence either upon the conjunctiva, or upon the deeper-seated textures of the organ, he applied it to the human eye. He dissolved a grain of hyoscj'^amine in a drachm of distilled water, and inserted a drop of the solution into the eye of an old lady of seventj^-one, who had cataract. So great was the consequent dilatation of the pupil, that only a narrow ring of the iris remained visible. No irritation whatever of any part of the eye was produced ; and the dila- tation continued for seven days. As chemistry is now furnishing us every day, in greater abundance, and with more ease, the active principles of various of our medicinal vegetable substances, we shall soon, in all probabilitj'', adopt hyoscyamine or atropine, for artificially dilating the pupil, instead cf the preparations now in use. Till that time arrives, you had better smear the surrounding skin with the moistened extract of bella- donna whenever the eye is painful or much inflamed. But under other circum- stances, the solution dropped into the eye is to be preferred for its readier action, and its greater power. The use of this curious virtue possessed by certain plants is not confined to the cure of iritis : it enables the surgeon to introduce instruments through the pupil with greater facihty and safety; it affords us also the means of examining the deeper-seated textures of the eye ; and it is of great service to many persons who are partially blind ; to such, for example, as have central specks on the cornea, or central opacities of the crystalline lens ; it enables such persons to enlarge the window of the eye; to admit more light; and to have painted upon the retina, and represented to the mind, the images of objects which, but for the mysterious agency of these poisonous vegetables, they could never hope to see at all. It is a very fortunate circumstance that the power of belladonna over the iris does not diminish by repetition. Mr. Lawrence mentions two patients of his, (Hie of whom had used it habitually for four or five years, and the other for four- teen or fifteen ; and it dilated the pupil just as well at the end of these periods as at the beginning. By carefully examining an eye in which lymph has recently been effused, you may distinctly see the good effects of the artificial dilatation of the pupil ; little strings of adhesion are often visible, connecting the edjie of the iris with the surface of the lens ; and these are stretched, and not un frequently broken under the influence of the belladonna : and minute black spots may some- times be seen upon the capsule, marking the points where the uvea had stuck, and where it left behind it, when it was detached by the belladonna, a portion of its peculiar pigment. These black points are indelible. There is one case recorded in which the pupil, after being dilated by belladonna, became fixed in that con- dition ; probably by lymph subsequently efflised into its texture, and binding together its fibres. Even this is better than that the pupil should be contracted and fixed. These three remedies, then — ^bleeding, mercury, and belladonna — are the means by which we are to subdue inflammation of the iris, and repair the ravages it has occasioned. With respect to the most important of the three, mercury, there are some points that require to be further noticed. You may ask to what extent the mercury should be pushed, and how long it should be continued? Why we have, in iritis, an illustration of what I have more than once mentioned before, viz., that the rapidity of a disease will require a corresponding haste m tne use of its remedy. In acute and violent cases, the mouth should be made decidedly 208 DISEASES OF THE EYE. sore, as quickly as possible ; and when that has been done, the further administration of the mercury may be suspended. " Full sahvation," says Mr. Lawrence, " quickly produced, cuts short recent disease, as if by a charm." In cases of longer stand in (t, or of slower progress, we must be slower in the introduction of the remedy : it will DC enough to obtain any, the smallest certain evidence of its action, in the gums and breath ; and we must keep up that moderate influence for some time. For what precise time it is impossible to say ; but till the redness has gone, and the natural colour of the iris returns, and all the visible lymph has disappeared, and the sight is perfectly restored ; and this may require a month or two. ^Vhen you look from day to day into the aqueous chamber of an eye in which iritis has recently produced its peculiar changes, and after the due effect of mercury upon the gums has been achieved, you. will be surprised as well as delighted to see large masses of lymph rapidly disappear, melt away, as it were, from the surface of the iris, while that which had been deposited in its intimate texture, rendering it confused and discoloured, as quickly clears ofT. And you will be inchned to beheve, as many have done, that mercury has a vast influence in promoting and accelerating absorption. It may have such a power : I am not disposed to deny it : but that it really has so we cannot safely infer from such circumstances. It clearly has the power of arresting the deposition of lymph ; of putting an end to the adhesive in- flammation. Whether it does any thing more towards completing the cure, we have these reasons for doubting. When blood happens to be effused into the anterior chamber ; or pus ; or when, as frequently happens, pieces of a cataract that has been broken up pass through the pupil, and show themselves between the iris and cornea ; they (the blood, the pus, the fragments of the lens) disappear, i. e., are absorbed, just as rapidly as the lymph in iritis, not a particle of mercury is taken Mr. Lawrence even gives a case of syphilitic iritis, which got well without any affection of the gums by mercury, and which had been marked by the deposition of a large mass of Ij-mph on the iris ; and he says that the lymph was immediately absorbed, as soon as the inflammation ceased ; and that he never saw it disappeai more quickly under any circumstances. There is one local use of mercury which I must not omit to mention, because though it probably has no share in curing the complaint, it is productive of great comfort and relief to the sufferings of the patient. It is adapted to those cases in which severe pain is felt round and over the orbit of the eye at night. Ten grains of the strong mercurial ointment, intimately mixed with two grains of finely powdered opium, and well rubbed into the temple a little while before the nocturnal pain is accustomed to recur, will in many cases completely prevent it. We owe this piece of practice to the Germans. Iritis is apt to occur from different causes, and in connection with different diseased states of the system. It is no uncommon accident from surgical operations performed upon the eye, the iris suffering mechanical injury. The inflammation thus excited IS usually violent and acute, and requires that the whole plan of treatment that I have been sketching out should be actively prosecuted. But inflammation of the iris sometimes arises slowly and insidiously, without vas- cularity enough to call attention to the eye, and without pain. This generally happens when the eye has been strained by over-use ; in women who occupy them- selves Avith fine needle-work ; in engravers, and such as are accustomed to look at minute objects, or at bright objects. A more common effect of continued exertion of the eyes in this way, is a diseased state of the retina; but (however the fact may be explained) the iris is sometimes the part that suffers. In this form of the disease mercury will often be found a successful remedy ; but its influence must be gra- dually brought about; and it is not so certainly productive of benefit as when it is employed in acute iritis : — probably because the chronic inflammation has involved the posterior tunics also. But most frequendy iritis is met with in combination with syphilitic, or with rheu- matic disease, which manifests itself at the same time in other parts of the body. Syphilitic iritis is more common than any other. It is one of the secondary symptoms .-;t syphilis ; and accordingly it is commonly associated with other secondary symp- IRITIS. 209 toms ; with syphilitic eruptions, nodes, pains in the limbs, and ulceration of the thioat. It IS also one of the earlier of these secondary affections, and therefore is sometimes the only one to be seen; and occasionally it declares itself before the primary disease is well. The pain that attends this species of iritis is chiefly felt at night, but at that time it is apt to be very severe and distressing, so as entirely to prevent sleep until it takes its departure in the morning. We cannot, I believe, dis- cinguish syphihtic iritis with any certainty from other acute varieties of the same complaint, by mere inspection of the eye. However, there are some points worth remembering in respect of the local phenomena which it most commonly presents. Syphilitic iritis is never attended (according to Mr. Lawrence) with abscess of the iris, and hypopyon ; the lymph is usually deposited in distinct masses; and the pupil becomes angular, and is not unfrequently displaced towards the root of the nose, by the adhesions which the iris has contracted with the parts behind it. In another variety of inflammation of the iris (which I shall mention to-morrow, arthri- tic iritis) lymph is equally effused from the margin of the iris, but it is not usually deposited in a distinct drop-like form. We ascertain the variety of iritis with which we have to do by these peculiarities ; by the co-existence of other tokens of syphilis ; by the periodical character of the nightly pain ; by taking into our account the a^e, the constitutional habit, and the probable state of morals of our patient. Syphilis, you know, is not uncommon in children ; it is sometimes even congenital : but it very Sfldom afft-cts the iris at that early period of life. Among a large number of syphilitic children brought to Mr. Lawrence, he never witnessed iritis but once. It was in syphilitic iritis that the curative power of mercury over adhesive inflam- mation was first distinctly recognized. But you must not fall into the error of sup- posing that the success of the remedy depended upon the specific character of the disorder ; upon its connection, I mean, with the venereal virus. Mercury is fully as serviceable and as sure in common acute inflammation of the iris. Upon this point ail men of experience are agreed. " Its influence (says Mr. Lawrence) is not con- fined to the syphilitic form of the disease, but extends equally to the idiopathic." And Dr. Farre bears testimony to the same effect. LECTURE XX. Iritis concluded. Rheumatic Ophthalmia. Amaurosis. The principal theme of the last lecture was that most interesting disease, inflam- mation of the iris. The symptoms of iritis are these : a radiating zone of vascular redness situated in the sclerotica, and surrounding the cornea ; a change in the colour of the iris, from gray or blue to a yellow or greenish tint, from brown or hazel to a dusky reddish hue ; a visible deposit of lymph upon the anterior and innermost portion of the iris ; a thickening of its free edge ; contraction, irregularity, and immobility of the pupil ; closure of the pupil by lymph ; adhesion of the uvea to the membrane of the chrys- talline lens. All these we can see aqd ascertain for ourselves. We can ascertaiu also the presence of fever, which attends the acute forms of the disease. And wj learn from the testimony of our patient that his sight is impaired ; that the influx o. hghl into the eye hurls him ; and that he experiences pain in and around the organ especially at night. The grand remedies in iritis are three. 1. Blood-letting : of which the objects are to abate the force of the heart's action, to moderate the febrile disturbance ; and to facilitate the operation of the second remedy : which is — 2. Mercury. This is to be given so as to produce soreness of the gums, and the peculiar fostor of the breath : and these effects are to be sought for rapidly or gradu- ally, according as the inflammation of t"".e iris is recent and acute, or moderaTe and 14 s3 210 DISEASES OF THE EYE. chronic. The object of this remedy is to arrest the efTusion of coagulable Ij^mph : to put a stop to the adhesive inflammation. S. The appHcation of the extract of belladonna to the conjunctiva, or to the skin around the eye, so as to dilate the pupil. The objects of this measure are to pre- vent the adhesion of the iris to the parts in its neighbourhood ; to detach it from ih^ lens when it has already been glued thereto by soft lymph ; and to stretch and elongate the bands of adhesion when they cannot be broken : and thus to obviat?; any impairment of the free movements of the iris, and any deformity of the pupil, after the inflammation shall have ceased. I began to speak of the causes of iritis. I say it may be occasioned by mechanical injury ; as during the operation for the extraction of a cataract. A clean cut, however, is frequently followed by no bad consequences ; a portion of the iris has been shaved oft' by the knife in making the section of the cornea, without any injurious result. When iritis is excited by mecha- nical violence, it is acute. 2dlv. A chronic form of iritis is sometimes brought on by excessive er./loyment of the eye, in looki.ig at minute or bright objects. '3dly. The most common species of iritis is that which arises in connection with syphiltic disease. It is one of the early secondary symptoms of syphilis. l! is marked by the co-existence of other secondary consequences of the introduction inio the system of the syphilitic poison, and by the periodical character of the nightly pain : it is never attended with abscess of the iris and hypopyon ; the lymph that is effused is deposited in separate masses ; and the pupil is often displaced towards the root of the nose, as well as rendered irregular, by the adhesion of the iris to the capsule behind it. 4thly. It is curious enough that iritis has actually been ascribed to mercury, as a cause. This notion can only have arisen from that loose kind of logic, and hasty generalization, for which, I am sorry to say, medical reasoners are too often distin- guished. Mercury is perpetually exhibited for the cure of syphiUs ; and people who have been treated for syphilis are very hable to iritis. This seems to be the only foundation for the opinion in question. When we come to appeal to i:;cts. we find no ground for believing that this mineral is thus both bane and antidote. If it were so, Benvolio's advice to the slighted Romeo might be very pertinently otTered to the pal lent in such a case : " Take thou some new infection to thiue eye, And the rank poison of the old will die." Mr. Lawrence has seen no instance of iritis, of whatever kind, in which there - ha? appeared to him any reason for attributing the occurrence of the complaint to this cause. I have never heard it alleged that persons who have taken large quan- tities of mercury for other diseases, as for affections of the liver in India, are parti- cularly subject to inflammation of the iris. On the other hand, iritis has come on, in hundreds of cases, in connection with syphihs, though not a particle of mercury had been sAvallowed by the patients. Lastly, there is a pecuhar form or variety of iritis, called tne arthritic or rheii- mafic. This affection is characterized by the Vdowing general features. It occurs in persons who are subject to gout or rheumatism, and often forms a part of the attack ' of the one or the other of those diseases. Like them it is liable to return again and again ; and this circumstance it is which makes arthritic iritis a serious disorder. It is seldom that much or permanent damage to vision is effected by a single attack ; bu* -^''hesions readily form under it, and lymph is effused : and in each successive Attack fresh efliision takes place : the pupil becomes more and more contracted ; and p may be filled up, at last, by an opaque plug of lymph. Some patients, howevjr, >vill suffer ten or a dozen recurrences of the disease, and recover almost completely, and enjoy perfect vision in the intervals, before the vision becomes much impaired. . .Some of the local appearances are more or less characteristic of this variety of iritis. It is seldomer attended than the syphihtic variety by a deposition of lymph RHEUMATIC OPHTHALMIA. 211 in distinct masses ; .the contracted pupil keeps its central position, and is not dis- placed towards the root of the nose, as it is apt to be in syphihtic iritis. The adhe- sions that bind the iris to the neighbouring parts are said to be whiter in this variety of iritis than in others.. It is also a very remarkable circumstance that the zone of red vessels encircling, the conjunctiva does net approach so close to the cornea as in other species of iritis ; but a white ring is left between the cornea and the anterior margin of the zone. Sometimes the circular white stripe is partial, being most marked towards the angles of the eye ; sometimes, on the other hand, it is as perfect as if it had been described with a pair of compasses. I believe, with Mr. Welbank, that the appearance of this bluish ring depends upon the less intense degree of the sclerotic inflammation. He says that he has noticed its coming on, when syphilitic inflammation of the iris was beginning to yield to the action of mercury ; although there had been no such interval during the height of the inflammation. Again, the colour of the zone is not so bright as in other forms of iritis ; it is of a somewhat livid, or slightly purplish tint : and the larger vessels at the back part of the eye, belonging to the conjunctiva, are apt to become tortuous and varicose. Rheumatic iritis is often met with in combination with what is called rheumatic ophthalmia: a disease which. I have not before mentioned. But each may exist alone. And as rheumatic iritis, though frequently an independent disease, does also in many instances grow (as it were) out of rheumatic ophthalmia, I will take this opportunity of shortly describing the latter complaint. AVhat is called rheumatic ophthalmia, then, is' inflammation aff'ecting the fibrous coat of the eye, the sclerotica. We. know that the fibrous tissues throughout the body are frequently the seat of rheumatic inflammation. Some persons are more liable to rheumatism than others — are more readily affected by its external exciting causes, which are vicissitudes of temperature, and exposure to cold and wet. In such persons there ^eems a tendency to take on inflammatory action in all the struc- tures of the sams kind ; and most particularly in the fibrous membranes, and tei - dons, lha.t help to form the various joints ; and as the sclerotica partakes of this fibrous texture, so it is apt to suffer, in its turn, from rheumatic inflammation. The connection of the movable eyeball with the head may be considered as a sort of joint. The local symptoms are not in general of a violent kind ; and, as in other parts, the rhematism seldom leadis to any permanent alteration of structure ; seldom, at least, when che ophthalmia is confined, as it often is, to the sclerotica alone. Pcr- naps the best way to put you in possession of the features that belong to rheumatic ophthalmia will be to describe an actual instance of it. 1 will take a well-marked example, related by Mr. Lawrence.. He was sent for to see a gentleman who was suffering from whaf is commonly called rheumatic gout : swehing, some redness, and severe pain of oni? foot and knee, and one hand; aching of the back; and great constitutional excitement. He got Avell under the treatment adopted. After a short interval, lipon Mr. Lawrence's calling to inquire how he was, he said there was something the matter with his .eyes; and asked to have them examined. "I looked, at them hastily," says Mr. Lawrence: "the room was dark, and the day dull ; and I saw no appearance of disease. When I called again, after a few days, as -the complaint was repeated, 1 examined more attentively. On bringing him towards the window, he obviously felt the light troublesome; he drew down ihe eyebrows, and half closed the hds, to avoid it. The conjunctiva was natural; but the whole of the. sclerotica had a livid red, and mottled appearance, which might have been called dull, or almost dirty, in comparison with the red colour of common active iriflammation. The sclerotic vessels were partially distended ; the redness terminated short of the cornea, so that there was a distinct white rim round the latter. Vision was perfect; there was no pain so long as the eye remained at rest ; but exertion of the organ, particularly under strong light, brought on uneasiness. The nature of this gentleman's occupation, and of his tastes, which were literary, pre- vented him from giving his eye the necessary repose ; and the condition of the scle- rotica just descrih.ed lasted for three or four months;" so that Mr. Lawrence was apprehensive that some serious mischief would ensue to the organ. The afTeotion remained confined, however, to its original seat, evincing only that obstinate chafac 212 DISEASES OF THE EYE. tor which belongs to disorders of such structures ; and at last it disappeared com pletely, leaving the eyes with their organization and powers unimpaired. The treatment that appears to answer best in simple rheumatic ophthalmia of this kind, consists in moderate topical bleedings, and counter-irritation : with such other measures as conduce to improre the general health ; and among these, change of air and scene have sometimes a decided effect. Those remedies also are to be given which have been found by experience to be beneficial in rheumatic inflammation, although we cannot always depend upon finding them useful : colchicum, I mean ; bark ; sarsaparilla ; the iodide of potassium. In these abiding or frequently recur- ring forms of disease, you will often be obliged to try the so-called specific remedies one after the other. Now when the rheumatic inflammation is not confined to the sclerotic, but creeps inward, as by their vascular connections it easil}^ may, to the iris also, we name the disease according to the most important part that it occupies — arthritic iritis. On the other hand, when, Avith that affection of the sclerotic which I have been de- scribing, there is combined a moderate degree of inflammation of the conjunctiva, this complex disorder receives a compound denomination ; it is called catarrho* rheumatic ophthcdmia. Dr. iVlackenzie states it as the result of his experience, that arthritic iritis seldom occurs in connection with the earlier appearance of gout, while the patients stil retain strong powers of digestion, and have the means of indulging their appetites; but rather with the asthenic and irregular forms of gout and rheumatism; when repeated attacks have been followed by mental depression, indigestion, flatulence and languor. He has generally met with the disease in subjects beyond the age of fift)-, very frequently in tobacco-smokers, and whiskey-drinkers, who have often suffered rheumatic affections, who are teased by headaches, acidity of stomach, bad gums and teeth, and lowness of spirits :■ in persons, that is, whose health has heen impaired and broken by intemperate habits. I believe you will find this to be a very correct statement; although arthritic iritis may ■Q.ho take place in those who are more robust. After what has now been stated you will be prepared to believe that arthritic iritis neither requires nor bears those free emissions of blood, and that liberal use of mer- cury, which are necessary for the cure of other varieties of the complaint. Mercury, pushed to salivation, is sometimes found to do more harm to the system than good to the eye ; and in a disease which is so apt to recur, we must not be continually salivating our patient. I can only say that the treatment must be conducted on the principles already laid down, and adapted to circumstances. If there be an}^ fever, and a hard pulse, and a white tongue, you should bleed and purge your patient, and afterwards give him from twenty minims to half a drachm of the wine of colchicum two or three times a day. When the symptoms are less active, you must be less active too: strive to set the disordered dijjestive organs ri2"ht, and to correct the bad habits of the patient: give small doses of mercurj' (such as five grains of Plummcr's pill) three or four times a week ; excite counter-irritation bj' blisters, or by the tartar- emetic ointment. After the use of bleeding or leeches, and the regulation of the bowels, preparations of iron, the sulphate of quina — tonics, in short, — have been found, in not a few cases, extremely beneficial. I should have mentioned another remedy, which of late years has been recom- mended in iritis, and especially in syphilitic iritis, by Mr. Carmichael, of Dublm : not as being a better remedj' in itself than mercury, or so good, but as having con- siderable, power over the disease, and as affording, therefore, a valuable resource when from any cause the exhibitkin of mercury is forbidden. This remedy is the oil of turpentine. He gives it in drachm doses, three times a day. He relates cases of syphilitic iritis in which the pain, redness and other symptoms, were quickly xemoved, and effiised lymph was absorbed, and vision restored, under the use of this medicine. It is necessary to its beneficial action that the bowels should nqj be con- nned. In other instances of the same disease, Mr. Carmichael was not so success- ful. Mr. Guthrie, who has also tried this remedy, reports of it that " in some cases t succeeded admirably, m others it has been of litde service, and in some unequal AMAUROSIS.. 213 to the cure of the complaint." I do not know that it has been fairly put to the test in arthritic iritis. I proceed next to quite a different kind of ophthalmic disease from any that we have yet considered. I have spoken of inflammation of the exterior membrane of the eye occurring separately; and of inflammation of certain internal parts, and par- ticularly of the iris, occurring separately. Between these exterior and interior tunics, the sclerotica forms a sort of natural barrier or shield, the chief point of connection Detween them being near the edge of the cornea, where the sclerotic vessels dive through to reach the iris. Inflammation of the sclerotica itself has also been de- scribed. When vision is impaired or destroyed in consequence of any of the com- plaints which have hitherto engaged our attention, that effect results from the partial or total exclusion of light from the retina. The cornea is left opaque, or it bursts ; the pupil, or aperture in the iris, is shut up by a web of lymph ; or the capsule of the lens to which the iris adheres has undergone a change, and lost its transparency. In each case the retina suffers an eclipse. But light may be freely admitted, and yet no vision ensue. The transparent parts of the eye, the several media, so skilfully and exquisitely adjusted for the due refrac- tion and collection of the rays of light into an image of the object from which they flow, may all be perfect and in order; but the beautiful apparatus is useless; the patient cannot see Vv'ith it. The fault is: in the nervous matter that should receive and transmit the impression, and render it an object of perception to the mind. Now persons in this condition are said to have amaurosifi. The term is derived from the Greek word a,uarpoj, which signifies obscure or dark. It expresses various degrees of imperfect vision, from defective nervous function. The words gutta serena are applied to that form of amaurosis in which vision is totally lost. It was formerly supposed that this 'sort of blindness was caused by the effusion of some humour or fluid behind the pupil: and this was held to be a clear fluid, because the natural blackness of the pupil is sometimes not troubled in arnaurosis. Milton has literally translated this term when, speaking of his own eyes, he says : ■ " So thick a drop serene hath quenched their orbs." • Amaurosis is a very obscure disease. It is capable of being caused by various changes, the exact seat and nature of which we often have no means of determining during life; and which frequently leave no traces behind them in -the dead body. It would take a much larger space than I can possibly devote to it in these lectures, thoroughly to discuss this difficult but interesting subject. I shall endeavour to give you such a sketch of it as you may fill up and complete by future observation and reading for yourselves. Ii will be something to learn the direction and objects of our inquiries into what is yet unknown in the pathology of this affection. There is one division of the disorder which immediately suggests itself. The cause of defect may exist in the brain, at or beyond the origin of the optic nerve; or it may be situated in any part of the course of that nerve, from its commencement at the base of the brain to its termination in theretina; or it may be confined to the retina itself. There is reason to believe that the functions of the retina may be impaired or sus- pended, by deviations from the natural quantity of blood sent to it; by disturbances of its circulation. Various degrees of amaurosis aje common among persons who employ the sense of vision overmuch, and strain the eye. This over-use is likely to produce congestion, or chronic inflammation,' in the vessels of the retina ; and very slight changes of that kind may seriously affect the function of a part so delicate and tender. I say we frequently meet with amaurosis among those whose occupations oblige them to look attentively at small or bright objects during many hours of the day; or what is still more pernicious, during many hours of lamp or candle lighi ; so as habitually to fatigue the eye. Engravers, printers, watchmakers, tailors and milliners, mathematical in.^trument makers, persons who gain their oread by writing, miniature painters, cooks who are exposed to the heat and glare of large fires, men who have the charge of forges or furnaces, and so on. Here a continual stimulua £14 DISEASES OF THE EYE. Jcads to a chronic disorder, which, increasing in intensitj', may terminate in total blindness. We call these cases of amuuroais, but they may be justly-considered to be instances o^ chronic wjlammution of the retina; we cannot see the suffering part indeed. during life ; and the complaint is not a fatal one, and, therefore, we have few opportunities, or none, of examining after death the condition of the retina while the amaurosis is yet recent. But judging from the nature of the causes that precede the defect of vision, and' from the nature of the remedies that are often found to re- move it, we are ^yarranted in regarding the essence of the disease to-be retinitis^ The same condition, apparently, may be suddenly produced b}' the transient opera- tion of some more powerful cause of congestion: such as intense light. 1 will illustrate this form of amaurosis — amaurosis, that is, dependent upon congestionj which, perhaps, amounts to inflamniation, sometimes slowly established, and some- times very suddenly — by the narration- of a few cases. I may as well premise, however, that the treatment which' promises niost, or I should rather say, which has performed most, in this form and kind of amaurosis, is very nearly the same (except- ing the use of belladonna) that I have already recommended for chronic and acute iritis. Blood-letting, general or topical, according as there are more or less pain and fever, and fullness of the system, and according as the amaurosis is more or less recent ; and above all mercury, so administered as to affect the gums, and rapidly introduced into the system in the acuter cases: more slowly in proportion as the disease has crept on more gradually and lasted longer. This treatment is very often quite successful : the mercury is the most important part of it ; and we have in this facta strong corroboration of the inference drawn from the nature of the exciting causes, viz., that the complaint is essentially inflammatory. And again, supposing it inflammatory, we need not be surprised that a remedy, the curative effect of which we can see in inflammation of the iris, should be equally serviceable when the same diseased process is set up in the retina, which we cannot see. Purgatives, counter- irritation, and perfect repose of the eye, are necessary parts of the treatment in both forms of disease. Mr. Allan gives the following account of the master of a printing-office, who be- came blind. He had corrected the press, and Avas otherwise engaged in reading, for eighteen hours daily out of the twenty-four. He continued this practice for twelve months, notwithstanding an evident failure of his sight.. At the end of that time the amaurosis was so complete that he could not distinguish one object from anothu-r, but was merely capable of just perceiving the light, so as to grope his way along the streets. He continued in this state for several years, but ultimately recovered his vision. The next instance that I shall cite is recorded, in these words, by Mr. Lawrence. "A young woman, of florid complexion and full habit, came to the London Ophthal- mic Infirmary, complaining that she had lost the sight of one eye. She was a cook, in a family, and occupied for several hours daily before large fires, supporting he' strength by free living. The pupil was slightly dilated ; the iris motionless. A faint and scarcely perceptible pink tint was observed in the sclerotica near the cornea. Vision was dim, and had been so for three days. There were headache, flushed countenance, heat of skin, whitish tongue, and thirst. 1 considered the case to be pure retinitis ; and to afford a favourable opportunity for slwwing whether the affec- tion could be arrested by antiphlogistic treatment. At that time (now many years ago) I did not possess the knowledge of the power of mercury in inflammation of the retina, which subsequent experience has given me. I directed a fuU bleeding from the arm, free purging, low difet, repose of the organ, and general rest. At the end of two days the sight was worse : cupping and a bhster were now ordered ; but there was no improvement at the end of two daj's.more. I now determined on try- mg mercury, and ordered two grains of calomel every four hours. Before the remedy had affected the system, vision was quite lost, or at least reduced to the mere power of distinguishing light from darkness. FuU salivation, which took place in about a week from the first application of this patient at the infirmary, suspended all the symptoms ; the sight immediately improved, and was soon completely restored." AMAUROSIS. 215 A soldier, unacquainted with the proper method of observing an ecHpse of the sun, employed fur that purpose a piece of opaque glass, with a transparent point in its centre. Notwithstanding the vivid and painful impression he experienced from the rays that passed through the lucid part of the glass, he continued to look at the sun till the eclipse was over, using his right eye. He vi^as soon after seized with vertigo, and pain in the right side of the head, and found himself almost entirely deprived of the sight of the right eye. Some weeks afterwards, the pain in the head continuing, he came under the care of Baron Larrey, who observed that the vessels of the eye were injected, the pupil somewhat smaller than that of the other eye, retaining, however, its natural freedom of motion ; the vision very obscure or almost gone. This man recovered his sight completely after two bleedings, one from the temporal artery, the other from the jugular vein ; blisters to the temple and nape of the neck ; ice to the head, and moxas. — [Mackenzie from the Mtmoires de Chirurgie.) In the year 1833, a young man standing in a door-way, by a lamp-iron, in a thunder-storm, was struck by the lightning, fell backwards, and was convulsed. He t^aid afterwards that the lightning appeared to enter his eye with a scorchino- sensa- tion. During the night, vision was quite lost. The next morning there was no red- ness, nor any unusual appearance of the eye. The iris was motionless, however, and the patient could not see even the sun. He was treated with calomel, and his sight returned ; but the retina remained extremely irritable, and unable to bear the light. A month afterwards, when this account was written, he could see distinctly t-nough, but he could not use his eyes without the protection of blue glasses. — {Lawrence.) In these cases the nervous apparatus that ministers to vision is not, I believe, in general, the only part of the nervous system that is injured. In August, 1839, Phoebe Judge, a delicate-looking girl, eleven years old, became my patient in the Middlesex Hospital. She had lost, in a great degree, the power of using her legs : when she attempted to stand they separated, and she sank down. She had not per- fect control over her bladder. The desire to make water was frequent, and if not immediately attended to, the urine escaped in spite of her efforts to retain it. The same urgency, and inability to wait, occurred whenever her bowels were about to act. Sensibihty in the legs and thighs Avas impaired, but not extinct. Her parents informed me that some time previously, while stooping to raise up a sister in a room at Hampstead, she had been struck by lightning, fell backwards, became blind, and remained so for ten days. She did not lose her consciousness, but complained immediately that the lightning had hurt her eyes. They presented no visible irijury or defect, but the upper lids fell, and she was unable to raise them. It was soon found, however, that when pressure was made on the right eyelid she could open the other eye. The palsy of her limbs commenced, by degrees, two or three days afterwards. The power of vision returned suddenly, and at the same moment the power of moving her limbs was restored ; but it gradually went again. When she lay down, her limbs were still; but they began to femble, and to be agitated as soon as she sat up. Even when lying in bed, she had occasionally a sensation and dread, as if she were falling down. She had been in this state nearly three weeks. She was put upon steel, and a tonic plan of treatment, and in ten days she could walk, dragging her left leg a little afier her. In ten days more she was dismissed quite well, and able to run from one end of a long ward to the other. The greater number of the cases of amaurosis depending upon a morbid condition of the retina itself, belong to the class that I have now been mentioning: there is congestion of the vessels of the retina ; or inflammation, chronic or acute. In a few instances a totally opposite condition of the blood-vessels is presumed to exisi. I say presumed to exist, because our judgment of this matter is founded, as before, upon the nature of the circumstances that have caused the affection, and upon the nature of the treatment that removes it. On these grounds some cases of amaurosis (few in number, speaking comparatively) may fairly be ascribed to a deficient supply of blood to the vessels of the retina. We know that a temporary defect of sight may 216 DISEASES OF THE EYE. be produced by a diminished circulation through the retina, as in approaching syn- cope under hemorrhage ; and we can therefore the more readily believe that more permanent amaurosis may be occasioned by causes that gradually lessen the quantity of blood circulating in the body, and debilitate the whole system. " It is well known (writes the late Dr. Gooch) that large losses of blood enfeeble vision. I saw a striking instance of this in a lady who was flooded to death. When I entered the chamber she had no pulse, and she was tossing about in that restless state which is so fatal a sign in these terrific cases. She could still speak ; asked whether I was come ? (she knew I had been sent for), and said, ' Am I in any danger ? — How dark the room is ! I can't see.' The shutters were open, the blind up, and the light from the window facing the bed fell strong on her face. I had the curiosity to lift the hd, and to observe the state of the eye. The pupil was completely dilated, and perfectly motionless, though the light fell full upon it. Who can doubt that here the insensibility of the retina depended on the deficiency of its circulation?" One might ask, also, who can doubt that the retina may become insensible from a similar state of the circulation in it, brought on by some long-continued drain upon the system ? Amaurosis of this kind, proceeding from too profuse and protracted a secretion (which may be considered a sort of hemorrhage), is sometimes noticed in nurses. Mr. Lawrence describes the case of a 3'oung mother of slender make, who suckled her first child, which was strong, and look the breast very often ; her milk was abundant. After two or three months she began to feel very weak, could not lift a weight, and cried frequently, without having any moral reason for grief. She became totally blind, and was led to his house by a friend. He found her pallid, with a small feeble pulse. The pupils were of middle size, and the irides moved slightly. The retina Avas completely insensible. She could not discern the situation of the window, nor see a lighted candle held close to her. After weaning the child, and using generous diet, she got perfectly well. Some counter-irritation was em- ployed in this instance, but I question whether it had any thing to do with the recovery. Such cases are not unconmion, and their well-known occurrence has probably tended to encourage the notion — too prevalent among both patients and practitioners — that amaurosis is always essentially a disease of debility, and requires tonic and stimulant remedies ; bark, and high feeding, and strychnia, and electricity. "Our eyes are iveak,^'' say they, "and we require strengthening medicines." You must perceive from what has already been said, how necessary it is to discriminate in such cases : to look closely into all the circumstances under which the disease has occurred. W'hen amaurosis is the resuU of pressure or of disease, in the course of the optic nerve, or in the sensorium, the complaint is generally less within the power of reme- dial measures. We cannot say, indeed, in many instances, where the cause of defect lies : and in obscure cases, I should always advise a trial of the mercurial plan. I have again and again seen slight palsy of some of the voluntary muscles, evidently depending upon some morbid condition of the brain, clear away rapidly upon the affection of the gums by mercury ; and the lost power of the retina will sometimes return under similar treatment. There is something very peculiar in the expression of countenance, and in the gait, of an amaurotic person, by attending to which alone, you may almost recognize his disease. He comes into a room with an air of uncertainty in his movements ; the eyes are not directed towards the surrounding objects ; the eyelids are wide open ; to use a strange but common and intelligible phrase, the patient seems gazing upon vacancy — has an unmeaning stare ; and there is a want of that harmony of •noveuu'iit and ex[)ression which results in a great measure from the information Obtained by the exercise of vision. This seeming stare at nothing at all, is not observed in patients who are blind in consequence of opacity of the crystalline lens or its capsule, i. c, in consequence of cataract. They, on the contrary, while they :^nnot see, still seem to look about them, as if they were conscious that the power of sight remained to the retina, although light was shut out from it. When the amaurosis is incomplete, the motions of the iris are sluggish, and the [>upil is largfer than ordinary. When the bhndness is total, the commonest condition AMAUROSIS. 217 of the eye is that of great dilatation of the pupil, with complete immobility of the iris. A mere ring of iris is all that is visible, and no change takes place in the diameter of the pupil, under the greatest variation of the Hght that falls upon it. Sometimes, on the other hand, though the amaurosis be total, the iris is as active as ever; and this is a very interesting circumstance, and may help us, in some degree, to conjecture the actual seat of the malady. When the amaurosis is con- fined to one eye, this may happen. You examine the diseased eye, and you find that the pupil enlarges, or contracts, as you diminish or increase the hght. But the other eye is open. Shut the sound eye, and try the amaurotic eye again, and you find the pupil fixed, although you vary the light. The motion you formerly noticed was sympathetic of the motion of the iris in the healthy eye. We express this otherwise by saying that the associated movements of the iris were natural and iiveljr, but its independent movements were- lost. But sometimes the independent movement is unaffected : nay, the motions of both irides may be perfect, although both eyes are completely amaurotic. I may state, by the way, that cseteris paribus, when both eyes are affected, that is a ground for supposing the cause of the disease to be situate within the cranium. And I should come to the same conclusion if, in the case where one eye alone was amaurotic, I found the independent motion of the iris of that eye unimpaired. AVe know that in the healthy condition of the parts, the brightness of the light admitted to the retina determines the size of the pupil ; but the motions of the iris do not depend solely or directly upon the retina. It has been ascertained, by experiments made upon animals, that the pupil may be made to contract either by mechanical irritation of the optic nerve within the cranium, or by irritation of the third nerve ; a motor nerve which sends filaments to the ophthalmic ganglion, whence the ciliary nerves, passing to the iris, are derived. Now the optic and the third nerves have some link of connection within the brain; and if the morbid condition upon which the amaurosis depends is situate deeper than the point of connection, we may understand, I think, how disease so placed may destroy the power of vision, and yet leave the connection between the retina and the third pair unafl^ected : and then the influence of light falling on the retina, though it fails to create a perception in the mind, will be reflected back upon the third pair of nerves, and so continue to govern the motions of the pupil. In conformity with these views, jM. Andral relates cases in which amaurosis connected with disease in the cerebellum was attended with brisk movements of the iris. There are other causes of amaurosis besides those that I have already adverted to. It is sometimes produced by the presence of worms in the alimentary canal. [That amaurosis is frequently dependent upon irritations seated within the stomach and bowels, and upon derangements of the digestive organs generally, there can be little doubt. We liave met with many cases of this kind, and they are repeatedly referred to, more espe- cially by the German writers on the disease. Children confined in ill-ventilated and ill lighted apartments, and supplied with coarse and indigestible food, are often affected with a certain degree of amaurotic blindness, which is readily removed by a proper hygienic treat- ment, and such remedies as are adapted to restore the regular functions of the stomach and alimentary canal. We have observed the disease, also, in children who have been at too early an age, confined in crowded school rooms for many hours of the day, while their minds were compelled to the performance of tasks beyond their powers. Complete blindness, we have known suddenly to occur in consequence of the jiresence of indigestible food in the stomach, and to be as quickly, removed upon its expulsion. For further information on this subject, the reader is referred to the chapter on amaurosis by Ur. Taylor, in the 2d volume of Tweedie's Library, Philadelphia edition, page 515, and to the very able paper of Dr. Jaoob on the same subject in' the Cyclopa;dia of Practical Medicine, Philadelphia edition, vol. i. page 78.— C] It has some obscure connection with teething, probably through irritation of the facial branches of the fifth pair. A physician of my acquaintance, residing in Lon- don, has a young son, who on two or three occasions has caused him great uneasi- ness, by becoming blind in one eye without any obvious cause, and with no visible change in the organ; but the blindness on each occasion has gone off again, appa- rently in consequence of the extraction of some teeth which had grown irregularly. I am assured by Dr. Ashburner that such cases are common. Mr. Lawrence relarie* T £18 DISEASES OF THE EYE. a very singular instance of denfal irritation giving rise to amaunsis. A, man, thirty years old, was suddenly attacked with violent pain in the left temple near the eye, and in that side of the face generally. The pain continued to recur from time to time, and at length he discovered that he was blind in the left eye. By and by the cheek swelled, and some spoonfuls of bloody matter were discharged by a spontaneous opening in the lower eyelid, and then the pain subsided ; but after some months it returned with great severity. The patient then went to Wilna, with the intention of having his eye extirpated, and consulted Professor Galenzowski, who found the left eye totally insensible to light, with the pupil dilated, and no other visible altera- tion. He ascertained, however, that the first molar tooth on that side was carious: it had never caused the patient much uneasiness ; and the toothache which he had occasionally suffered had not been coincident, in point of time, with the pains in the head and eye. , Dr. Galenzowski thought fit to extract this tooth, and was greatly surprised at seeing a small substance protruding from the extremity of its fang. This proved to be a little splinter of wood about three lines in length, which had perforated the Centre of the tooth, and had probably been introduced in using a wooden tooth- pick. A probe passed from the socket into the antrum, from which a few drops of a thin purulent fluid escaped. The pain ceased almost entirely, and on the same evening the eye began to be sensible to light. The vision gradually improved, and on the ninth day from that time, after thirteen months' blindness in that eye, he was able to see with it as perfectly as with the other. M. Galenzowski has since been in England, and he showed Mr. Lawrence the tooth, and the splinter of wood. Doubtless he felt some pride in exhibiting these trophies of his exploit. Amaurosis is said also to occur as an hysterical affection : and t am certain that I have seen this myself. An unmarried lady, of a very nervous and susceptible habit, came to town in great apprehension about her eyes, the sight of one of them being quite gone. I could perceive no defect in the eye itself. I saw her in consultation with Mr. Tra vers, who took an unfavourable view of the case, and thought the chance of recovery was very slender. I had one reason for hoping a better result, in the knowledge of some facts which Mr, Travers was not aware of till I mentioned them to him. I had been acquainted with this lady for some years, and during that period she had several times almost entirely lost, and again recovered, the use of her lower extremities. On two occasions she had been affected with aphonia, and unablfe to speak, except in a whisper, for months together ; and then, on a sudden, without any apparent cause, her voice returned. I trusted, therefore, that this suspension of the power of vision in one eye might be a similar freak ; and so it turned out. After a {e\v weeks the sight returned, she knew not how; and she has since lost it a second time, and a second time regained it. Certain ])oisons will produce temporary amaurosis; and the suppression of certain natural evacuations, as of the perspiration, of the rhenstrual fluid, and of the bleeding from piles, and the repulsion of certain eruptions, have been charged, by authors, with- producing tlie same complaint. In those cases in which amaurosis creeps on slowly and insidiously, as it is apt to do fi-on> various causes : and more particularly when it depends upon a low and. chronic inflammation, engrafted upon habitual congestion of the vessels of the inter- nal tunics of the eye;, its approach is marked by sundry curious affections of the vision. The rye feels full or stiff, and sometimes there is pain of the head in its neighbouihood; the patient complains that he sees things through a fog or mist, or as if a thick piece of gauze were interposed between his eye and the object he is looking at. In the daylight, the gauze or fog seems dulf and murky, but in the dark it often appears shining, reddish and fiery : the flame of a candle is seen ^ur• founded with a halo of prismatic colours. That amaurosis of this kind is often really dependent upon local congestion we are taught by the hcdenlio, by the circumstances that aggravate it: thus slrainins; of any kind, M'liich augments for the time the fiill- ness of the vessels about the head, will make the mist appear more dense : the same effect may be produced by tj'eingthe neckcloth tight; or even by stooping. Boerhaave lelates the case of a man who, whenever he was intoxicated, laboured under com- plete amaurosis : it came on by degrees, increasing according to the quantity of AMAUROSIS. 219 vi'ine he drank; and after the drunkenness went off, his vision returned. Surely the^e phenomena are very illustrative of the way in which nervous disorders may arise, or be made worse, from mere local plethora, in almost any part of the body. Sometimes the perfect amaurosis is preceded by a remarkable diminution of the apparent size of the objects looked at. A patient told Dr. Farre that a carriage, which happened to pass the window, seemed to him as small as a wheelbarrow, and the horses no bigger than dogs. More commonly ocular spectra become visible : that. is, parts of the rej.ina lose their power, or perhaps are eclipsed by turgid vessels : the patient sees flies in the air, muscse volltantes, particles of soot, blacks, as we, who live in London, call them, which always float before his eyes, and seeiii to fol-' low their. motions ; and which are especially plain and troublesome when he is look- ing upon a white surface. They multiply in number till the whole becomes dark. Do not, however, suppose that the appearance of these muscoe volitantes, even Vvhen they are permanent, necessarily implies "(he approach of amaurosis. I should oe sorry if it were so, for I see two of them every morning, when' my eyes are directed towards a white basin, while I arti washing my'face. I can find them at other times if I look for them ; else I am not sensible of their presence. They bode no further evil, if they are associated with no other defect, in function or in appear- ance, of the instrument of vision. It is obvious that no particular rules, no rules, that is, which will fit all cases, can be laid down for the treatment of so multiform a complaint as amaurosis. When it manifestly results from disease of the brain, as when it accompanies hydrocephalus, or remains after a stroke of apoplexy, our attention must be directed to the disease from which it has sprung. When there is any reason to suppose that congestion or chronic inflammation of the internal tunics of the eye itself is concerned in the pro- duction of the amaurosis, we must adopt the measures that I have already described, as the most likely to remove the congestion; and especially the mercurial plan. When there is ground for suspecting that the blindness takes its rise in vascular exhaustion, or nervous debility, we must have recourse to tonics ; bark, preparation? of iron, nourishing diet, the cold' bath. After all, you will find too many cases which will baffle your best-directed attempts, and in which you will be required and warranted to try other expedients. When what I may call rational measures have been expended in vain, you may have recourse to such as are empirical and tentative. There are various stimulants which have occasionally been found serviceable ; but most of them, I believe, fail much oftener than they succeed. Electricity is one of these : it is applied by taking small sparks from the eyelids, and from the integuments, round the orbit. The object of this is to rouse the dormant energies of the impassive nerve : and it appears some- tiniesHo do this for the retina, as well as for the nerves supplying voluntary mus- cles. Mr. Ware tells us that electricity is most beneficial in those cases in which amaurosis has succeeded a stroke of lightning. You must take great care .not to employ this remedy when there is any inflammatory action at the bottom of the complaint : it should seldom be tried therefore when the affection is recent. S'lrycluiia has, of late years, been used for the cure of amaurosis. I shall here- after take an opportunity of telling you the ordinary effects of that substance upon the body, when given in a certain dose — what is its poisonous operation, and what may sometimes be hoped from it as a remedy. In amaurosis it does good, when it is useful at all, by stimiilating the exhausted or atonic nerve into action. With respect to this remedy also I may say — first endeavour to ascertain that it is not Jik( ly to do harm ; as it will be if the blindness depend upon any condition akin to inflammation. Mr. Middlemore, of Birmingham, has probably given this remedy an ampler trial than any other person, and he speaks very favourably of its effects in certain cases : in others he found it to produce so much pain, and spasm, and dis- tre.ss, that he was obliged to discontinue its use. It is not given, in these cases, by the mouth, but applied locally ; and Mr. Middlemore considers that it is most efficient when placed over the supra-orbitary nerve. He puts a narrow blister above the eyebrow.; when it has risen he cuts off the cuticle, and applies a piece of linen, for half an hour, to absorb the serum that continues to ooze forth ; then he spnnkles fJJB 220 DISEASES OF THE BRAIN Strychnia, finely powdered, upon the raw part, and covers it with linen smeared with the iinguentum cefacei. He repeats this every twenty-four hours, cautiously increas- ing the dose till the vision improves, or some sensible evidence of ihe agency of the strychnia becomes apparent. He commences with the sixth part of a grain. I must here leave the subject of diseases of the eye. In addition to the lessons which I pointed out before as capable of being learned by attending to the disorders of this small organ, I may now mention a few "others, of no little moment, since we shall meet with their application again and again, as ^ye proceed to investigate the morbid conditions of other parts. We have seen enough to convince us that mercury, properly administered, has the invaluable power of stopping adhesive inflammation ; of arresting the effusion of coagulable lymph from the blood-vessels : that inflammation of a given part may be sensibly modified by the simuUaneous agency of some specific poison upon the system, as that of syphilis ; or by the presence of constitutional tendencies to disease, such as •ire observable in gouty and rheumatic people. And we have seen that the func- tions of a nerve may be perverted; suspended, or abolished, in various ways : by pressure made upon it; by a plethoric state of its blood-vessels, or by an empty state of them; by injiammation of its texture, chronic or acute : and even, in some mysterious, or hitherto unexplained manner, by mere irritation of a distant part; by Avorms, for example, in the alimentary canal ; by poisorious substances introduced into the stomach: and by what, in oiir ignorance,. we denominate the freaks and caprices of hysterical disorder. All these lessons we shall find repeated, as the course advances. LECTURE XXI. Diseases of the Brain and Nervous System. Difficulties of the subject. Short Revieiv of some points in the Physiology of the Brain and Nerves. Peculiarity of the Cerebral Circulation. Pressure. Having considered some of the most important disorders of the ej-e, because they afforded me the means of illustrating many of the doctrines and principles, which I had previously endeavoured to lay before you, o^ general pathology, I go next to the diseases of that portion of the body, which, though it includes many distinct parts, is called, collectively, the head. I pass over the maladies to which the integuments of the head are liable, because they will fall more naturally and conveniently into the class of cutaneous disorders ; and I come at once upon one of the most interest- ing, and at the same time most difficult and obscure subjects of special pathology — ■ that which embraces the 'diseases of the brain and nerves. Though it will be a slight departure from the plan I have proposed of taking diseases as they affect dif- ferent parts of the body from the head downwards in succession, I shall speak of diseases of the spinal cord, and of the nervous system generally, in connection with 'Jiose of the brain. To disunite them would neither be easy nor useful. The study of the maladies and disordered conditions of the brain and nervous sys- tem, h surrounded with peculiar difficukies : and, accordingly, our knowledge of these diseases is less- precise than of the diseases of most other parts of the body. 1. One source of difficulty lies in the circumstance, that the structure of the ner- vous system has no perceptible or understood subservience to its functions. We do not discover in the mechanism of this system that adaptation of means to an end which is so conspicuous in many other parts of the body : and consequently, though such adaptation doubtless exists, we are not able to trace the reason or the manner tjf its interruption. We find in the lungs an apparatus of tubes and cells fitted fo) che reception of air, upon the expansion of the chest by the contraction of certain muscles ; of which muscles also we can see and understand the action. If we meet, vilh any obstruction of these tubes, or any obvious impediment to the play of thosi AND NERVOUS SYSTEM. 221 muscles, we perceivt at once how and why the function of respiration is deranged. But no alterations that becgnoe visible, after death, in the brain or spinal marrow, afford us any explanation of the interruption of their proper functions; which are, in^hree words, sensation, thought, and motion. An apoplectic cell has no relation, direct or inverse, that we are capable of appreciating, with a sentiment ; nor a dis- tended lateral ventricle with the exercise of the will. The morbid anatomy does not in any degree elucidate the disorder, simply because the natural structure throws no light upon the healthy office of the parts concerned. 2. It is a further source of difficulty, that physiologists have not yet been able to determine, with any thing like precision or certainty, what share the several parts of the brain and spinal cord have in regulating, respectively, the functions which all physiologists acknowledge to belong to the nervous system in the aggregate.. There are many and convincing reasons, for believing that the brain is a complex organ ; but we. can seldom put our finger upon this or that portion of the nervous m.atter which composes it, and say, here resides the influence that governs this or that par- ticular function. 3. Again, the brain and cranio-spinal axis are so encased by their bony coverings, that, in the living body, we are unable to ascertain their physical conditions by jneans of any of our senses. Of many parts of the frame we ascertain the state by the sense of sight ; and of many parts that we cannot see, we still may recognize the changes by the faculty of touch, or by the ear. The brain and spinal cord we can neither see, nor hear, nor handle. 4. Besides these obstacles to the acquisition of information by. the exercise of our Own senses, concerning the organs affected, the very disturbance of the functions of the brain cuts us off, in many cases, from that kind of information which we might otherwise derive from the statements of the patient himself. 5. There is a still greater cause of perplexity, with which we have to contend. The very same symptoms accompany alterations of the brain apparently of a very different, nay of the most opposite kind ; and on the other hand, changes of struc- ture, which, as far as we can perceive, are absolutely identical in their nature, are associated, in different cases, with totally different symptoms; and more frequently than not, nervous diseases are attended with no alterations of structure, appreciable by our senses, 6. And lastly, we are perpetually asking ourselves, when we find the proper func- tions of the nervous system disordered, — is this disorder the result of disease in the nervous matter itself? or is it merely sympathetic of disease in other parts? for there are few diseases of any kind which do not, in some degree, modify or disturb the due exercise of the offices of the brain and nerves: and it is very difficult often, and. sometimes it is impossible, to determine whether, and how far, the disturbance is primary or' secondary. With all its difficulties, however, the pathology of the brain and nerves is always full of interest. How can it be otherwise, when we reflect that the nervous system is the medium through which we hold comnmnion with the world around us; the stage upon which all the phenomena of animal life are transacted : the instrument of the mind ? And '.vith all its difficulties, there is also a good deal in the pathology of tJie brani and n<'rves that is fairly made out and well understood ; and we are at present in the right way for advancing our knowledge of this intricate and mysterious subject, by that careful collection of facts, and rigid induction of particulars, that will lead, at length, to a safe and useful generalization. I shall endeavour to point out to you what is known of the morbid conditions of the nervous system ; I shall also state the conjectures and probabilities by which our judgment and practice must be guided,' when absolute certainty is unattainable. With mere speculative questions, that have no practical beanng, I sna.l meddle aa little as I can. Our knowledge, I say, of the exact functions of the different parts of the nervous apparatus, is scanty and imperfect. Some certainties, however, we possess ; an 'I t2 222 DISEASES OF THE BRAIN some strong probabilities which almost amount to certainties. Without first ex- pounding mj' creed upon these matters, it Avould be inipossible for me to explain, as it would be for 3'ou to understand, the notions I entertain respecting /many of the diseases of the brain and nerves. Omitting the sympathetic nerve and its ramifications (for we know but little of its office, and still less of its disorders), the nervous system is made up of certain rnasses of nervous matter, called the nervous centres; and of ?je?T'e^ therewith con- nected. The nervous centres consist of the cerebrum and cerebellum, the medulla ob longata and the medulla spinalis. I shall include the cerebral hemispheres, and the lobes of the cerebellum, under the common term, the brain. So I shall speak of the oblong and of the spinal-marrow, in the single phrase, the spinal cord, or. the craniospinal axis ; their endowments appearing to differ more in relation and de- gree, than in kind. I adopt the belief that the gray (which are much the more vascular portions of these nervous centres, form the part in which their peculiar powers reside, or are generated ; and that their white or fibrous portions are, like the white and fibrous nerves, mere conductors of the nervous influence. I incline, also, to the opinion (recollect, if you please, that I do not press these opinions of mine upon you as being necessarily correct) that the influence which originates in the gray matter, and is transmitted by the white, will at last be found to consist in, or to be closely connected with, some modification of electricity; We know that some of the effects of this influence may be very exactly imitated, in ani- mals recently dead, by galvanism. The functions of the brain and nerves are sensation, thought, volition, and the power of originating motion. Other functions indeed there are ; but these four are all that we need, at present, concern ourselves with. Now, it is a part of my creed, that the faculties of sensation, of thought, and of the will, belong to the brain : in all probability to the cerebrum alone. The precise office of the cerebellum is involved in much obscurity and dispute. Some of the opinions that have been formed respecting it, I shall notice hereafter. , The chief grounds for beheving that the brain proper is, exclusively, the- instru- ment of the mind, are these : — 1. Because this portion of the nervous centres is superadded to the cranio-spinal axis, in the greatest bulk and most comphcated form, in man : and after him, in those of . the inferior animals which show the largest share of reason. r . ■2. Because, in inferior animals which evince a certain amount of mental endow- ment, all manifestation of intellect ceases upon the gentle and gradual removal of the cerebrum and cerebellum : the animals continuing to live, for a long time, not* withstanding this mutilation. , Again, it forms part of my creed on these subjects that the motive power resides m the spinal cord. The muscles furnish the instruments of motion. Now there is a certain class of muscles which contract without our willing theii contraction : and generally without our being conscious that they are contracting, Such are the heart, the njuscular fibres of the alimentary canal, and of the bladder. These are, therefore, called involuntary muscles. There is another large class of muscles which obey the bidding of the will, and .serve the purposes of prehension, locomotion, and bodily effort. These are consi- dered and called voluntary muscles. There is still another distinct set of muscles, of which the habitual action is invo- luntary, yet which submit also to the interposing control of the will. You will 'all to mind at once the muscles of respiration, which act while we are asleep, or otherwise unconscious ; and the sphincters, which regulate the entrances and outlets of th') body. Here, I say, the habit is involuntary, but the occasional action is prompted and governed by volition. But sometimes the involuntary action rebels njjainst thp willed action, and overcomes it. The muscle contracts in spite of tho ATii: AND NERVOUS SYSTEM. 223 Nay, those muscles which, ordinarily, move only in obedience to voliiion, do sometimes, under the influence of strong emotion, or of disease, contract independ- ently of any effort of the will, and even in opposition to, and defiance of, the volun- tary power. Under certain circumstances the limbs move with much briskness and force in decapitated animals, in Avhich sensation and volition are extinct. Some physiologists hold, indeed, that sensation and volition are properties of the spinal cord ; and they would object to these cases, that no one is warranted in afiirming the movements in question to be independent of the will. The animal has no means of informing us whether it feels or not, any more than the human head that has been severed by the axe or the guillotine. This point, however, has been settled by certain phenomena which are observed to occur, in the human body, under disease. Limbs completely palsied as to volun- tary motion, and quite dead as to sensation, do yet, under certain conditions, contract and move when the integuments are pinched ; the rational patient not feehng the pinch, and not being conscious of the movement. Whence does the impulse that leads to motion in these cases proceed — how is the motive power awrkened ? The answer to this physiological question has a most important bearing upon the pathology of the nervous system. It is no part of my purpose to enter into any history of the steps by which this curious problem has been worked out. Its solution is an achievement of our own time ; and I may add, of our own country. I profess no more than to sketch, in mere outline, the leading facts that have been ascertained ; yet I must, in passing, pay the tribute due to one indefatigable labourer in this department of science, whose sagacity has enabled him to seize the clue, and in a greiat measure to unfold the mazes of the labyrinth in which this part of the physiology of the nervous system was so long entangled. Dim and uncertain glimmerings of the truth appear in the writings of bygone authors, but it was never clearly discerned, and plainly stated, and successfully applied to the elucidation of a large class of disorders, until the publication, in 183*^ or 1833, of Dr. Marshall Hall's ingenious and most interesting researches into " the functions of the medulla oblongata and spinal cord." Similar views appear to have suggested themselves, about the same time, to Professor MuUer of Berlin. I must recommend you to study the works of these authors; and Imay also point out, as fit writings for your perusal (since the doctrines I am now speaking of are comparatively new), Dr. Grainger's Observations on the Structure and Functions of the Spinal cord; Dr. Carpenter's two works. Principles of General and Comparative Physiology, and Principles of Human Physiology : and a very able paper on the Pathology of l^he Spinal Cord, by Dr. William Budd, in the 22(1 volume of the Medico-Chirur gical Transactions. If, on the other hand, you wish to see how nearly the idea, which has been so happily simphfied into an intelligible principle by Dr. Hall, was reached by earher observers, you may consult the writings of Dr. Whytt, upon nervous diseases. What, then, respecting this intricate subject, are the main facts and doctrines which modern research has made clearer ? It seems ascertained, that the movements of those muscles which acknowledge the empire of the will, depend essentially upon some momentary change in the condi- tion of the spinal cord. This change (whatever may be its nature) is capable of being effected in three several ways. First, volition, or emotion, originating in the brain, may send down an influence which travels with electrical rapidity to the spinal cord : whence, the renuisite change having been instantly produced, the motive influence passes, with proportional speed, along the nerves which connect the cord with the muscles to be moved. Secondly, the change productive of motion may be wrought in the cord, whethei the brain be attached to it or not, by mechanical, chemical, or electrical agencies, operating directly upon the cord itself. Thirdly, the change productive of motion may be wrought in the cord, bv an 2'M DISEASES OF THE BRAIN influrncc carried to the cord, not from the brain, but from the extremiiies of nerves distributed upon the internal and external surfaces of the body, The action of this nervous circle, whereby, I say, an influence is first carried from the surfaces of the body, along nerves to the spinal cord — whence again an influence is transmitted, or reflected, as it were, to certain muscles along certain other nerves— ^ has been called by Dr. Hall the reflex function of the spinal cord. The apparatus subservient to this function is named by him the excito-motory system; the nerves which carry the impression to the cord are incident or cxcitor nerves; those which convey the motive imj)ulse froin the cord, reflex or motor nerves. Dr. Carpenter's terms (which I like better, except for their similarity in sound) are querent and efferent nerves. Mr. C4rainger believes that physiology indicates, and anatomy can exhibit, four sets of fibres belonging to the nerves and the nervous centres. Sensiferous, S-wA volition nerves, connected with the gray substance of the cerebrum and subordinate to the exercise of feeling and of the will ; awA incident and reflex nerves, connected with the gray matter of the cord, and belonging to the excito-motory system. Whether this be the true state of the case, or whether the efiexent fibres be the game, while the afll;rent fibres are difl^erent ; the latter coming to the spinal marrow both from the brain and from the various surfaces, just as two trains may arrive at Euston Square ultimately by the same rail, although tlie one starts at. Derby and the other at Birmingham; or (which- is perhaps the better illustration) just as, in some houses, the same bell is made to ring in the servants' hall by pulling, indifferently, the dining-room or the drawing-room rope : — which of these two hypotheses is the more correct, I am not competent to determine. This reflex action, independent of the will, and although attended often by con- sciousness and sensation, yet often also exercised when there is neither, governs the orifice by which air and food are introduced, and excrements are voided. The infant breathes and sucks by it; the adult uses his will for bringing nutriment into his mouth ; in both, the act of deglutition, after the food has reached a certain point, is involuntary. The expulsion of the feces, the urine, the semen, and the foetus, is regulated by the same function. Nevertheless, most of these, muscular acts are capable of being moderated and directed by volition. The reflex power, on the other hand, extends, both in health and in disease, to the entire system of the strictly voluntary muscles ; during health it is manifested only in the maintenance of what is called their tone, their natural tension and firmness : in disease, as we shall here- after see, it sometimes acts upon them with terrific energy. Some of the difficulties which I enumerated in the beginning of the lecture, as impeding our researches into the diseases of the nervous centres, are insurmount- able. One or two of them, however, appear to call for a more attentive consideration. I say we often fail to discover any deviation from the natural condition of these nervous centres, or of their appendages; even when the disorder of their functions has been broadly displayed. ' We tire not to infer, from this, that no change has taken place in these parts. The only legitimate conclusion is, that the nervous functions are liable to be deranged, impaired, or suspended, by altered conditions, not traceable by our senses, or at least not yet discovered by us, of the organs which minister to those functions. There may be only one such undiscovered disturbing cause, variable in degree in difll'rent cases ; or (what is more probable) there may be several such conditions differing in kind. A blow or fall, which jctrs the brain ; a sudden mental emotion ; an electric shock ; a teaspoonful of prussic acid ; any one of these causes may de- stroy life, yet leave no vestige of its action in the nervous substance upon which it operates. It is probable that the fatal condition is not, in each case, the same. We may even form a reasonable conjecture of the manner in which the invisible changes are sometimes brought about. We can conceive, for example, that undue pressure upon the nervous pulp on one hand, or insufficient pressure on the other, may constitute conditions of the kind we are in search of; and I shall be able, I think, to convince you that such is sometimes the case. Again, we can conceive AND NERVOUS SYSTEM. 225 that such conditions may be furnished by the varying state of the cerebral circulation. In point of fact, we kno7V of some changes m the circulation through the brain which have the effect, invariably, first of modifying, and at length, if they are con- tinued, of arresting, the cerebral" functions. If no blood be sent through the arteries of the brain, death°in the way of syncope ensues ; if venous blood circulates in those vessels, it leads to death by coma. But whatever may be the nature of the unknown, and perhaps fugitive, physical conditions of the nervous centres, thus capable of disturbing or abolishing their func- tions, it is useful to keep in our minds a distinct and clear conception of the fact that there must be some such physical conditions. By steadily retaining this idea of their real existence, we may hope, at length, to get some insight into their nature ; which we are the less likely to obtain, if we dwell only on the obvious and visible injuries effected in the nervous substance ; associated, as they are apt to be, with so perplexing a diversity of symptoms. Indeed, by the help of this distinct conception, we are at once enabled to reconcile some of the seeming anomalies and inconsisten- cies to Avhich I before adverted. The same symptoms, I repeat, have been found to accompany phj'sical lesions of die nervous centres, apparently different in kind, place, and degree: and, on the contrary, physical lesions, apparently identical in their nature, extent, and situation, are attended by different and contradictory symp- toms. We must not attribute the symptoms, in such cases, to the visible physical lesions, but to some unperceived condition of the nervous centres, concomitant with those lesions. The proximate cause of the symptoms escapes our notice. The obvious physical changes may be remoter causes of the symptoms — causes of this proximate cause : but they may also be merely cotemporaneous effects of some other remote agency. I have adverted to deviations from the natural and healthy circulation of the blood through the brain, as being capable of modifying the nervous functions. Of such deviation, one mode which is conceivable, and which has been assigned as a pre- sumed cause of morbid phenomena, is a variation in the relative quantity of blood contained respectively in the arteries and veins that He within the cranium. And it seems probable enough that a healthy condition of the cerebral circulation may imply and require a certain balancing and adjustment of the amount of blood carried in hese two sets of vessels. But with this theory — that disturbance of the functions of the brain may result from an altered ratio of the arterial and venous blood therein — has been associated another; namely, that although the blood may, at different times, be variously distributed between the cerebral veins and arteries, yet that the absolute quantity of blood circulating within the cranium is always and necessarily the same, or nearly so. This notion, broached by the second Monro of Edinburgh, and upheld (as it then seemed) by experiments performed upon animals by Dr. Kellie, received at a later period the sanction and approval of Dr. Abercrombie. And, resting upon such authority, I have been in the habit of delivering the same theory, not, however, with- out some misgiving as to its soundness, in these lectures. It has been completely overthrown, of late, by Dr. George Burrows. The doctrine was this. The brain is closely shut up in an unyielding case o\ bone. Its surfiice must therefore be exempt from the influence of atmospheric pressure. Hence, supposing its substance to be unaltered and incompressible, it would seem impossible to empty the blood-vessels of the brain. The cavity being completely full, the blood which circulates in those vessels can neither be materially increased, unless something is displaced or compressed to make room for tho addi- tion ; nor materially diminished, without the entrance of something to supply the place of the blood substracted. Dr. Kellie noticed that while, in animals bled to death, the other ^Jrganb of the body were emptied of their blood, and blanched — the brain presented its ordinary appearance, and even seemed to contain more blood in its superficial vessels than usual. Having satisfied himself upon this point, he varied his experiment. He first made a small opening in the skull, by means of the trephining instrument, takmy 15 226 DISEASES OF THE BRAIN away a little circular piece of bone, and then he bled the animals until they died : and in these cases he found that the brain was as completely drained of red blood as the rest of the body. He did that with respect to the cranium which housekeepers do when they tap a barrel of beer. You know that if the barrel be quite full, you may introduce a fawcet at its lower orifice, but no beer will run out through it. The pressure of the atmosphere operates upon that portion only of the fluid which is now exposed to the air, and its effect is to keep the beer in. But if j'ou bore a small hole with a gimlet through the top of the cask, and so admit air to the upper surface of the beer, it will then flow readily through the lower outlet. Dr. Kellie imitated this process of making a vent-hole, when he trepanned the skulls of sheep, and admitted air to the yielding membranes of the brain. He availed himself, also, in these researches, of what he considered the converse experiment. He desired to ascertain whether, under circumstances calculated to gorge the vessels of the head, those of the brain were or were not made really more full than usual. With this object he examined the brains of two men who had been hanged. When the scalp in these cases was divided, a great quantity of blood escaped ; marking plainly enough the congestioniBf the vessels exterior to the era- niinn, but there was no such congestion observable tvifhin. " The sinuses contained blood, but in no extraordinary quantity ; the larger vessels on the surface and be- tween the convolutions were but moderately filled ; and the pia mater was, upon the whole, paler, and less vascular than we often find it in ordinary cases." Similar appearances have been noticed by myself. I paid particular attention to the condi- tion of the head during the examination, below-stairs, of the body of Bishop, the murderer of the Italian boy. When the corpse was brought hither after the execu- tion, the eyes were blood-shotten, and the lips and countenance turgid and hvid. The inner surface of the scalp, when it was turned back, and the exposed surface of the skull, were very red and bloody ; and in one part, on the right side of the head, there was some blood exfravasated. But when the bone had been sawn through, and the skull-cap removed, the large veins of the brain did 7iot appear unnaturally full. In the year 1826 I was present in St. Bartholomew's Hospital, at the opening of the head of a woman who had been hanged the day before, for murder. I find the following statement in a note which I made at the time. " The scalp was bloody, but the brain w^as of very natural texture and appearance, and not more than com- monly full of blood." Among the propositions deduced by Dr. Kellie from his observations and experi- ments were the following : — 1. That in the brains of animals that hr.ve died of hemorrhage, there is no lack of blood, but, on the contrary, very often a state of venous congestion. 2. That congestion of the cerebral vessels is not met with in those cases in which we should most expect to find it ; in persons, for example, who die strangled. 8. That the quantity of blood in the cerebral vessels is not afl"ected by gravitation: in other words, that it remains the same, whatever may be the posture of the body, and the position of the head. Dr. Burrows, distrusting the whole theory, and unsatisfied with the experiments by which it was fortified, determined to repeat them, taking care as much as was possible, to exclude every conceivable source of fallacy : and he has shown, most convincingly, that Dr. Kellie's conclusions were erroneous. First, he demonstrated that hemorrhage has a most decided effect in depleting the cerebral blood-vessels, and in reducmg the quantity of blood within, as well as upon the outside of the cranium. Two well-grown rabbits were killed : the one (A) by opening the jugular vein and carotid artery on one side of the throat ; the other (B) by strangulation. Round the throat of the first, as soon as it was dead, a ligature was tightly drawn, to prevent any further escape of blood from the -essels of the head. " The contrast between the two brains in point of vascularity, both on the surface and m the interior, was most striking. In the one, scarcely the trace of a blood- vessel could be seen ; in the other, every vessel was turgid with blood." AND NERVOUS SYSTEM. 227 He next investigated the effect of posture upon the condition of the intercranial ressels. •'Two full-grown rabbits were killed by prussic acid; and while their hearts were still pulsating, the one (C) was suspended by the ears, the other (D) hy the hind legs. They were left suspended for twenty-four hours ; and before they were taken down for examination, a hght hgature was placed round the throat of each rabbit, to prevent, as effectually as was possible, any further flow of blood to or from the head, after they were removed from their respective positions. " In the rabbit (C) the whole of the external parts of the head, the ears, the eye- balls, &c., were pallid and flaccid ; the muscles of the scalp and bones of the cra- nium were also remarkably exsanguine. Upon opening the cranium, the membranes and substance of the brain were pallid, the sinuses and other vessels were exsanguine — ancemic beyond my expectation. " In the rabbit (D), the external parts of the head, the ears, eyeballs, &c., were turgid, livid, and congested. The muscles and bones of the cranium were of a dark hue, and gorged with blood, which at some parts appeared extravasated. Upon opening the cranium, the membranes and vessels were dark, and turgid with liquid blood ; the superficial veins were proininent, the longitudinal and lateral sinuses were gorged with dark blood, and there was straining of the tissues, if not extrava- sation of blood into the membranes. The substance of the brain was uniformly dark, and congested to a remarkable extent." From these experiments. Dr. Burrows draws the logical inference, that " the principle of the subsidence of fluids after death operates on the parts contained Within the cranium, as well as upon those situated in the thorax or abdomen." And of that absence of vascularity sometimes observed within the skulls of persons who have died of strangulation, he offers a very satisfactory explanation. In the first place, the cerebral vessels are, in some instances, highly congested. Something will depend upon the position of the rope; which may press unequally upon the jugular veins on the opposite sides of the neck, leaving one of them more or less pervious. " But there is another still more efficient cause of the occasional absence of con- gestion of the cerebral vessels after death by hanging. It is the subsidence of the Jlidd blood after death, while the body is yet suspended, through the cervical vessels which are not completely obliterated by the pressure of the cord. And, it should be recollected, there are some channels which are scarcely, if at all, affected by the compression of the rope. These other channels are the vertebral sinuses, and special plexus of veins, so ably dehneated by M. Breschet." Moreover, the manner in which the corpse is generally examined, proves an ad- ditional source of fallacy. All the great vessels of the neck are usually cut across, and the viscera of the thorax removed from the body, before the skull is opened. Then, while the head is elevated, during the operation of taking off the calvarium, and examining the brain, the blood, still fluid (as it almost always remains, after sudden death of any kind,) "gravitates from the cranium, and pours from the divided cervical vessels into the chest." By this refutation of a prevalent error, not unlikely to warp or mislead our practice in some cerebral disorders. Dr. Burrows has done the science of medicine an essential service. The theory which he has demolished involved probably more than one erroneoiu assumption. Dr. Burrows thinks that the anatomical structure of the human cra- nium does not warrant the opinion that its contents are withdrawn from the pressure of the atmosphere. " The numerous fissures, and foramina, for the transmission of vessels and nerves through the bones of the cranium, appear to me (he says) to do away with the idea of the cranium being a perfect sphere, like a glass globe, to which it has been compared by some writers. If there were not always an equi hbrium of pressure on the parts within and without the cranium, very serious consequences would arise at the various foramina of the skuU." We fall back, therefore, upon another principle, whereby some of the difficulty and obscureness which attend certain affections of the brain and nerves may \^ 228 DISEASES OF THE BRAIN. explained. 1 mean the principle of varying jrressure upon the nervous substance Physiologists say that the cerebral matter is incompressible. This is another of the questionable assumptions implied in the foregoing theory. Upon what grounds the opinion may rest, I am ignorant : but whether the brain be compressible or not, whether, that is, it be or be not reducible by pressure into a smaller compass, it is clearly capable of having different degrees of pressure applied to it, and of being pressed out of its ordinary form. We shall see, hereafter, that by pressure exercised from within, by the distension of what are called the ventricles of the brain, the convolutions on its surface are sometimes flattened, and the natural furrows between them nearly effaced. Pressure there certainly is in what I shall have to describe to you as hypertrophy of the brain. There must be considerable pressure on the nervous pulp when blood is poured out within it from a ruptured artery in cerebral hemorrhage. But the phenomena noticeable when a portion of the skull has been removed by the trephine, show very clearly that the encephalon sustains pressure from the varying states of the circulation during perfect health. The surface of the brain, seen through the circular opening in the bone, is observed to pulsate ; and to pulsate with a twofold motion. With every systole of the heart, the surface pro- trudes a little ; and it again subsides with the succeeding diastole. This shows that the tension of the arteries, produced by every contraction of the ventricles of the heart, exerts a degree of pressure upon the contents of the cranium. But the brain has an alternate movement also, corresponding with the movements of the the rax in breathing ; rising with every act of expiration, and sinking with every act of inspi- ration. Now, during expiration, the blood escapes less freely from the head through the veins ; and thus again vascular fulness is found connected with evidence of pres- sure on the parts within the head. In further proof of this, if any were needed, I may again refer to Dr. Kellie's experiments. He removed a portion of the cranium of a dog by the trephine. The brain was observed to rise and fall alternately, but so as always to fill the cranium; the rise being marked by a sort of protrusion through the hole that had been made. One of the carotid arteries was now opened, and in a minute or two afterwards there was an evident gradual sinking and receding of the brain from the margin of the bone. So, likewise, when the blood was flowing from the rabbit (A) in Dr. Burrows' experiment, "the conjunctiva was observed to become pallid, and the eyeballs to shrink within the sockets.^^ It is certain then that, whether the cerebral pulp yields to it or not, there is a constant alternation of a greater and a less compressing force, exerted upon it, during life. It is not improbable that this continual variation of the compressing force may be essential to the performance of the cerebral functions. May not the brain be thus incessantly charged, if indeed it be (as has been suggested by no less a philosopher than Sir John Herschel) "an electric pile, constantly in action," dis- charging itself by the nerves, at brief intervals, " when the tension of the electricity developed reaches a certain point?" However this may be, it is equally certain that the compressing force may transgress its natural limits, in either direction ; may be too great or too little. The functions of the nervous centres may be perverted, or lost, when the pressure becomes excessive : or, on the other hand, when the pressure is insufficient. It IS plain that excess of pressure may cause fatal coma, or defect of pressure fatal syncope, and yet no evidence of the operation of these causes be left in the dead brain. And we may explain, by the help of this same theory of pressure, a very singular phenomenon observed in certain forms of cerebral disease ; I mean the occasional recurrence only of the symptoms, although the organic disease itself be permanent. For example, we see continually persons who are epileptic: that is, they have fits of convulsion and stupor noio and then, and appear perfectly well in the intervals. After the death of such patients we sometimes find organic disease of the brain ; a piece of bone perhaps projecting from the cranium, or a tumour, or a cyst : and this we are apt to consider as a sufficient explanation of the preceding disease; but we are always pressed with this difficulty; if the tumour or piece of bone was the cause of the paroxysms, why had the paroxysms any cessation ? It seems probable, or not improbable, that in such cases as these, and in manj SYMPTOMS OF CEREBRAL DISEASES. 229 Others, the permanent morbid condition is a predisposing cause only of the occa sional symptoms ; rendering the diseased organ more sensible to variations in the circulation; to accidental circumstances which determine an undue amount of conf- pressing force, or a deficient amount ; and I think Dr. Abercrombie has gone too far when he says "we may safely assert that the brain is not compressible by any such force as can be conveyed to it from the heart through the carotid and vertebral arteries." Dr. Kellie narrates the following curious circumstance : — "Mr. G., with a nume- rous train of distressing symptoms, which too well marked the existence of enlarge- ment of the heart, and the violent propulsive energy of that viscus, had only one characteristic of any disturbance within the head. On looking upwards to the whitened ceiling of a room, he saw a darkened spectrum, which vanished ari reap- peared with great regularity. It was soon discovered that the appearance of this umbra was synchronous with the systole of the heart, so that he used often, in my presence, to count his pulse with the utmost precision, by keeping his eye fixed on the ceiling, and numbering every appearance of the spectrum." In this case it is- presumable that b)'" each contraction of the left ventricle of the heart, plethora of the cerebral blood-vessels was produced, and therefore an excess of pressure upon the cerebral substance. In that which I am about to quote it seems, on the other hand, probable that comparative emptiness of the vessels of the brain, and a consequent defect of the requisite degree of pressure, occasioned the morbid phenomenon. A gentleman, thirty years old, was reduced to a state of extreme weakness and emaciation by some complaint of his stomach. As the debihty advanced he became very deaf; and this symptom varied in the following instructive manner. He was very deaf while sitting erect, or standing; but when he lay horizontally, with his head quite low, he could hear very well. If, when standing, he stooped forwards, so as to produce flushing of the face, his hearing was perfect ; and upon raising himself again into the erect posture, he continued to hear distinctly as long as the flushing continued : as this went off the deafness returned. — (Abercrombie.) An old clergj'man, who is sometimes my patient, is troubled by two grievances : deaf- ness and an intermitting pulse. They are both always benefited by quina. Objections, I should tell you, have been raised against this theory of pressure affecting the functions of the nervous centres ; but I think the objections are sus- ceptible of a satisfactory answer. I must content myself, however, for the present, with having pointed out the main grounds upon which the theory rests. The diffi- culties that attend it, and the considerations which diminish the force of those diffi- culties, \vill come necessarily before us on a future occasion. LECTURE XXII. Symptoms of Cerebral Diseases. — Inflammation of the Dura Mater and Arach- noid, from external injury ; from Disease of the Bones of the Ear, and of the Nose. — Inflammation of the Pia Mater. The functions of the brain, summarily expressed, being sensation, thought, and voluntary motion, we naturally look for disturbances of those functions whenever the organ suffers disorder or disease. And experience has made us familiar witn various forms of disturbance to which these same cerebral functions are liable. Let us pass them shortly in review. 1. The faculty of sensation may be morbidly keen, or morbidly ooiuse ; or it may be perverted : in other words, it may deviate in degree, or in kind, from the healthy standard. The sensations referred to the several surfaces and structures of the body, and to the organs of sense, may (without any fault in those parts and organs) be preternatu- ra.ly acute. Tenderness ascribed to different parts, their ratural sensations being u 230 DISEASES OF THE BRAIN. heightened into pain ; a general state of irritability ; intolerance of Hght, and of noise ; are so many instances of this over-sensitiveness of the percipient organ. •Under the head of diminished or defective sensation may be ranked, numbness in all its degrees, up to total loss of sensibility or ansesthesia ; dullness of hearing, deaf- ness ; dimness of sight, blindness ; failure, or absolute extinction of the senses ot taste and of smell. Perverted sensations, sensations unnatural in kind, are very numerous. To men- tion a iew : giddiness ; nausea ; ringing in the ears ; ocular spectra ; ill smells in the nostrils ; false tastes on the palate ; itching ; and sundry uneasy feehngs, many of which are indescribable. Various kinds of pain belong to this class ; spirits vio- lently high ; causeless depression, anxiety, and dread. 2. Innumerable degrees and varieties of disturbance of the faculty of tJwvght are met with. Dehrium in all its shades ; dullness and confusion of intellect ; sundry defects of memory ; incapacity of judgment ; and every degree of stupor up to com- plete coma. 3. Of the function of voluntary motion there are also various kinds and grada- tions of derangement : twitchings of the muscles ; tremors of the limbs ; rigidity from spasm ; irregular and involuntary jactitation ; convulsions ; muscular debihty ; palsy. Now, as I stated before, there is, and there can be, no ph3'^sical exploration of the living brain. We are limited, therefore, in studying its diseases, to the rational symptoms. It becomes our task to interpret the import of the multiform disturbances of function just enumerated, in every case in which more or fewer of them appear; and when you are told that these sj^mptoms are apt to present themselves in almost every conceivable order and combination, and, moreover, that many of them may be S3'mpathetic of diseases of other parts than the brain, you will scarcely need to be further informed, that the language thej^ speak is often very hard to construe ; that we frequently fail to reach and discover, by these outAvard signals, the inward things they denote. I am about to consider, in the first place, some of the inflammatory affections of the brain, and some which may easily be mistaken for inflammatory affections ; and I warn you beforehand, that, in respect to exactness of diagnosis, we are sadly bar- ren of certainties in these matters. Hints, sketches, approxinnations, are nearly all that I can promise concerning not a few of the many diseased conditions to which the brain and its appendages are obnoxious. In the brain, as in other composite organs, inflammation may be general or par- tial. It may attack certain tissues only : it may be seated in the substance of the cerebral mass ; or in the membranes that envelop it. I need not tell any of you that the membranes which invest the brain are three in number; the fibrous dura mater, the serous arachnoid, and the pia mater, which ie composed of blood-vessels held together by a web or areolar tissue. Speaking generally, inflammation of the cerebral substance alone, is perhaps more common than inflammation of the investing membranes alone. The central parts of the nervous mass may and do suffer inflammation, while the membranes escape. But it seems to me scarcely possible that inflammation of the pia mater should take place without imphcating also the surface of the convolutions with which it has so close a relation, and so intimate a vascular connection. Agam, with respect to the membranes themselves, the dura mater my be inflamed while the pia mater remains unaffected. I befieve also that the arachnoid may suflTer inflammation, and leave the subjacent pia mater untouched. Whether the arachnoid ever escapes participating in the inflammation of the dura mater on the one side, or of the pia mater on the other, is to be doubted. Cin we separate and distinguish these several inflammations by assigning to each Its proper external phenomena 1 Seldom ; scarcely ever. Doubtless each has its peculiar symptoms ; and if inflammation were often strictly limited to the one mem- brane or the other, and if the course and events of the inflammation did not modify the condition of the brain itself, by pressure, or by affecting the circulation of blood mrough it, then we might expect greater uniformity, and might hope by careful ami DURA MATER AND ARACHNOID. 231 repeated observation to seize upon the desired distinctions. But this simplicity is not exhibited by the inflammatory affections of the parts v/ithin the cranium. Inflam- mation commencing in one membrane is apt to spread readily and rapidly to the rest, and to the cerebral substance; and the compHcation of diseased conditions coexisting within the skull at the same time, throws confusion over the whole sub- ject. This unceriainty of exact diagnosis is however of the less consequence, inas- much as when we have learned that inflammation is going on in any part of the encephalon, we have learned enough to direct us as to the geileral plan of treatment to be adopted. After all, certain symptoms do present themselves more frequently when one part is inflamed, and certain other symptoms more frequently when another part is inflamed ; and it will be proper and convenient to contemplate certain forms of meningeal inflammation separately. Let us, first, then, consider inflammation as it is confined, occasionally, to the dura mater — or to the dura mater and arachnoid. This very rarely happens as an idiopathic or spontaneous disease ; but it is not at all uncommon as a result of external injury. And we may advantageously trace its ordinary phenomena and consequences, by attending to these instances of traumatic inflammation of the dura mater. They were excellently well described many years ago, by Mr. Pott. A man receives a blow on the head ; the blow stuns him per- haps at the time, but he presently recovers himself, and remains, for a certain period, apparently in perfect health. But after some days he begins to complain ; he has pain of the head, is restless, cannot sleep, has a frequent and hard pulse, a hot and dry skin, his countenance becomes flushed, his eyes are red and ferrety ; rigours, nausea, and vomiting supervene ; and, towards the end, deHrium, convulsions, or coma. Meanwhile the part which was struck becomes puffy, tumid, and somewhat lender ; and if this tumid portion of the scalp be cut through, the pericranium beneath it is found to be separated from the bone ; moreover, the bone itself is observed to be altered in colour, whiter and drier than the healthy bone ; and if a piece of this bone be reiuuved, it is also seen that the dura mater on the other side of it is detached from the cranium, and sometimes smeared with lymph or puriform matter. This is a form of disease very often met with by the surgeon. I have watched, with much interest, several such cases under the care of my hospital colleagues. One or two of them I will briefly describe. In the year 1833, during Christmas time, the coachman of a lady living in my neighbourhood fell, being intoxicated, into a cellar or area, struck in his fall one side of his head, and tore up the scalp over a considerable space. He was carried to the hospital, where the loose flap of integuments was cleansed and replaced. After some days erysipelas came on, and then a much larger portion of the scalp sloughed away, so that the bone was laid bare to a frightful extent, and looked, at a little dis- tance, as he sat up in bed, like the tonsure of a monk. Nevertheless the man seemed wonderfully free from suffering or distress : his pulse, indeed, v.-as frequent, but it was said to be so during health. His intellect was clear, and he had no head symp- toms ; or rather, no brain symptoms. In the early part of February, 1834, he had a shivering fit, which was followed by convulsions of the right side of the body, and subsequently by paralysis of the right arm and leg, and by stupor, from which he could easily be roused. He would put out his tongue when desired to do so; but to every question he answered "yes." A portion of the left parietal bone was evidently dead : here the trephine was applied; and a piece of bone being removed, the dura mater was exposed. It looked as if it had lost its vitality. Some pus lay upon it. No relief followed the operation. On the lOtli of February fluctuation was detected beneath the dura mater which was then slit open. About three drachms of puriform fluid escaped. The patient died soon afterwards, having had no active delirium throughout. The surface of the dura mater was found to be nearly of its natural appearance, except where the trepanning had been performed. At that spot it was dry and 232 DISEASES OF THE BRAIN. sloughy. Over the whole of the anterior and lateral surface of the left hemisphere there lay, upon the arachnoid, a thick coating of coagulable lymph, smeared with pus : this extended down the posterior part of the hemisphere also, nearly to its base. There was no other morbid appearance ; no fluid in the pia mater, nor in the ventricles. The substance of the brain was everywhere perfectly sound and healthy : it was divided in all directions in search of an abscess, but nothing unnatural could be delected. Another man came to the hospital to have a small incised wound of the scalp looked at. The injury appeared to be trivial ; the cut was dressed, and the man made an out-patient. A few days afterwards he came again, incompletely paralytic on one side of his body. I saw this man's skull trepanned ; he was perfectly calm and collected : that part of the dura mater which corresponded to the wound was found to be inflamed ; and there was pus diffiised over the arachnoid covering the cerebral convolutions on the same side. He sank quietly into a state of coma, and so died. Not the slightest incoherence or dehrium had been manifested: there had been no convulsions, nor was there any other morbid appearance within the cranium. I mention these cases to show you the grounds of my own opinion, that inflam- mation, beginning in the fibrous membrane, may affect the arachnoid, without neces- sarily extending to the pia mater; just as inflammation ??ift^ overspread the pleura, or the pericardium, without touching the lung or heart which those serous mem- branes respectively clothe. Here no sensible traces of inflammation were discovered deeper than the free surface of the arachnoid ; and there had been no disturbance, t]*ll towards the end, of the proper functions of the brain. I conclude that the disease did not pass beyond the serous membrane ; for I can scarcely conceive inflammation of the pia mater to exist without involving, in some degree, the surface of the brain; nor inflammation of the surface of the brain to exist without some manifest derange- ment of the cerebral functions. In the instances that I have been relating, the final stupor and palsy may reasonably be ascribed to pressure resulting from the events of the inflammation of the arachnoid : from the effused pus and lymph. Inflammation of the dura mater is very rare as a simple and idiopathic affection. Dr. Abercrombie relates one instance of it, as the only one he had seen ; and even that was not a pure case of inflammation of the dura mater. There was pus upon that membrane, which adhered to the cranium over a space as big as a crown-piece, and at that spot was ulcerated. But there was also found an adventitious membrane beneath the arachnoid where it covers the brain. Speaking generally, this complaint is marked by pain of the head, by fever, and by rigors which intermit ; and so regular sometimes are the intermissions, that the practitioner may be tempted to beHeve that he has got an aguish patient, and to administer bark. The intellectual faculties, especially at the outset of the disease, are but little affected ; which is just what we might expect. The dura mater and the arachnoid lying apart from the sensorium, their inflammation can have no other than an indirect influence upon its functions. Although inflammation of the dura mater is very uncommon as an idiopathic or primary disorder, we very frequently meet with it as a secondary afll'Ction ; and then there are few diseases more surely fatal or less within the reach of remedies. It is as a consequence of what is called otitis, that physicians are chiefly accustomed to encounter inflammation of the dura mater. It results from disease of the internal ear, and of the petrous portion of the temporal bone. Sometimes acute inflammation arises within the tympanum, when there has been no previous disease : the patient has severe headache ; at length a gush of matter comes from the external meatus, but the pain does not, as it usually does in such cases, cease ; it continues, or even increases in intensity : the patient begins to shiver; he becomes dull and drowsy ; slight dehrium, perhaps, occurs ; and by degrees he sinks into stupor. In some instances no pus issues externally. More commonl)* symptoms of the same kind •supervene upon a chronic discharge of purulent matter from the ear. It is scarcely possible to sketch an accurate general picture of this insidious but most dangerous r-innplamt. Next to seeing and watching actual cases of it, the best way of becoming DURA MATER AND ARACHNOID. 233 acquainted with its phenomena is by attending to recorded instances. I will bring before you, therefore, some examples of inflammation of the dura mater, occurring in connection with disease of the interior of the organ of hearing. A youth, sixteen years old, applied to the late Dr. Powell (who has related the case in the fifth volume of the Transactions of the College of Physicians) on account of an eruption, with an acrid discharge behind the right ear. He had become deaf five years before, after scarlet fever, but no discharge took place at that time from the ear. In the following year, however, he had the measles, and then an absces.<5 formed in the right ear ; and after giving him much pain, it burst. He had again suffered, three days before Dr. Powell first saw him, a sudden attack of very severe pain in the same ear. The pain quite deprived him of rest ; but he had no fever, nor delirium, nor soma. He slept, indeed, a great deal, but that was the effect of opiates, which he took to relieve the pain. This symptom was quieted by the opium ; but it always returned with severity if the medicine was suspended. A foetid dis- charge came from the ear. On the tenth day of this attack, after a most violent paroxysm of pain, his strength rapidly declined, and he died. "When the head was examined, *the structure of the dura mater was healthy and natural, but beneath this membrane the whole superior surface of the right hemi- sphere was covered with a layer of coagulable lymph and pus. The vessels of the substance of the brain were not more numerous or loaded than usual, and the brain itself was healthy in every part. In the base of the skull the dura mater adhered to the bone, except at one part, of about half an inch diameter, just over the petrous portion of the temporal bone, where it was black and sloughy. The subjacent portion of the bone itself was carious, black, and crumbling ; and contained foetid pus." In this case, you will observe, there was no symptom to mark the extensive mis- chief within the head, except the pain : the pulse never exceeded 72 ; the skin was warm and moist ; there was neither fever, nor delirium, nor convulsion, nor coma. A girl, aged nine, (I take this case from Dr. Abercrombie, whose volume on the diseases of the brain is full of practically instructive examples,) had been liable to attacks of suppuration of the ear, which were usually preceded by severe pain, and some fever. She suffered one of these attacks in the left ear, in July, 1810. Upon the discharge of matter from the ear she did not obtain ease, as she had done on former occasions ; but continued to be affected with pain, which extended over the forehead. When Dr. Abercrombie saw her, he found that, besides the pain, she had some vomiting, and impatience of light. Her look was oppressed ; the pulse 84. Blood-letting, purging, blistering, and mercury, were employed without relief. Two days afterwards there was slight and transient delirium, a degree of stupor, and slight convulsions. She lay constantly with both her hands pressed upon her fore- head, and moaning from pain, of which there had not been the least alleviation. On the fifth day from the commencement of the discharge, she continued sensible, and died suddenly in the afternoon, without either squinting, blindness, or C0K\a, the pulse having been always under 90. A. considerable quantity of colourless fluid Avas found in the ventricles of the brain, which, in other respects, was healthy. In the left lobe of the cerebellum there was an abscess of considerable extent, containing purulent matter of intolerable foetor. The dura mater, where it covered this part of the cerebellum, was thickened and spongy, and the bone corresponding to this portion was soft, and slightly carious on its inner surface ; but there was no communication with the cavity of the ear. Here again the pain was the most prominent symptom, and probably resulted from the partial inflammation of the dura mater. It is interesting to mark these two points : — that the disease in the bone imparted disease to the dura mater, although no passage was opened from the tympanum ; and that this inflammatory state of the external membrane of the brain led (apparently^ to deep-seated sujfpuration in the cerebellum; the parts lying between the aoscess and the dura matei escaping. This last, and somewhat singular circumstance, might have been owing, (so at u2 234 DISEASES OF THE BRAIN. least I conjecture), to the extension of the inflammation from the suppuratinir ear to some of the veins of the skull ; and the consequent formation in the cerebellum of one of those secondary abscesses so commonly noticed in uncircumscribed phlebitis. Two very remarkable instances of diffused inflammation of veins, and of its terrible effects, occurring in connection with purulent otorrhosa, have fallen under my own observation ; one of them in private practice, the other in the hospital. As I am not aware that such consequences as supervened in these cases upon otitis, have received much attention, I will briefly describe them. The first of these two patients was a boy, eleven years old, whom I attended with Dr. Maclntyre and Mr. Arnott. He had had a discharge of offensive purulent matter from his ear since the time when, four years before, he had gone through scarlet fever. In August, 1833, he went, for a walk, into Kensington Gardens, and there lay down, and slept upon the damp grass. The next day he was attacked with headache, shivering, and fever. Strong rigors, followed by heat and perspi- ration, occurred very regularly for two or three days in succession ; suggesting the suspicion that his complaint might be ague : but then pain and swelling of some of the joints came on, and were, at first, considered'rheumatic. However, the true and alarming nature of the case soon became apparent. Abscesses formed in and about the affected joints ; and one of these fluctuating swellings was opened, and a consi- derable quantity of foul, grumous, dark-coloured matter let out. After about a fort- night the child sunk under the continued irritation of the disease. The hip-joint presented a frightful specimen of disorganization ; it was full of unhealthy sanious pus, the ligamentum teres was destroyed, the articular cartilages were gone, and matter had burrowed extensively among the surrounding muscles. The knee and ankle joints of the same limb were in a similar state. It is curious that the destruc- tive disease of the joints was limited to those of the right lower extremity, while the primary suppuration was in the left ear. Unfortunately the head was not examined ; but that the fatal disorder had penetrated from the ear to the dura mater, I entertain no doubt : in all probabihty the inflammation had involved the veins or sinuses of the head. The second case had many points of similarity with this. William Marriott, aged 19, was admitted under my care into the Middlesex Hos- pital, on the 18th of October, 1834, having pain and tumefaction of the right shoulder, wrist, and foot, with redness of the latter. He complained also of headache, vertigo, drowsiness, and of an occasional feeling of stupor. His skin was hot and dry, his face flushed, his tongue furred, his pulse frequent (112), and his bowels were re- laxed. A puriform discharge came from his right ear. He had been suddenly seized, a week before, with sharp pain in that ear, which lasted twenty-four hours, when the discharge commenced, and the pain was relieved. He then began also to have headache, which had never left him, and to be sometimes dizzy. Three days previously to his admission the rheumatism (as he supposed it to be) commenced in the foot. When this part was examined, the redness was found to be circumscribed, somewhat livid, and limited to the great toe. It had much the appearance of gout. He soon began to be troubled with shivering fits, which recurred regularly every morning about the same hour, and were followed by burning heat of the skin, but no sweating. An abscess formed near the toe, and was opened by Mr. Mayo, and some healthy-looking pus evacuated. Next a large fluctuating tumour near the bhoulder was punctured, and three ounces of pus, mixed with blood, came out. After this incision the rigors ceased ; but the abscesses continued open, and the dis- charge had an offensive smell. On the 14th of November it was discovered that matter had collected in the left hip : this also was emptied by puncture. On the 1st of December, a very large quantity, not less than three pints, of unhealthy and grumous pus, was let out from a vast abscess which had formed in the loins : and pus was 'noticed in his stools. The discharge from the shoulder came at last to resemble the lees of port wine. During all this while the patient remained feverish, with a dry parched tongue, ajid a rapid and feeble pulse. The diarrhoea continued, more or less, throughour DURA MATER AND ARACHNOID. 23S I For some titno oefore his death, which happened about the middle of the month of I December, the left leg and thigh had been much enlarged by osdema. I was not able to be present at the inspection of the body ; and I have to regret that in the report which I received of it, the condition of the brain, of its membranes, and of its veins, was not noted. The right shoulder-joint was extensively diseased ; the cartilages Avere destroyed by ulceration over a considerable space. Those of the left hip were entire, but the synovial cavity was full of foul matter. The joint of the great toe was implicated also in the abscess wliich had formed there. The femoral vein, on the left side, was plugged up, throughout its whole extent, by a coagulum, which was firm and of a reddish brown colour at the upper part of the vessel, loose and darker towards the ham. The saphena was pervious : the iliac was free from disease. The lungs had undergone partial disorganization. Several distinct portions of the pulmonary tissue were nearly solid, while the tissue immediately around them was crepitant and healthy. From these small solidified portions, puiulent riiatter could be made to ooze by gentle pressure. The mastoid cells of the right temporal bone were filled with pus, and there was a sht-like opening in the membrana tympani. The small bones of the ear were sound. I much lament that in these instances, the direct link of connection between the disease of the ear and the dis'organization of the joints was not demonstrated : for seeing (they say) is believing. Yet the pain of the ear, the discharge of pus from the external meatus, the subsequent pain of the head, coming on with fevers and rigors, and followed after a short interval by destructive suppuration in several dis- tant parts, and, in the last case, the actual femoral phlebitis: these circumstances form a chain of presumptive evidence, amounting, in my judgment, to moral cer- tainty, that the fatal mischief, in each case, found entrance through " the porches or the ear;'' and that the dura mater underwent inflammation. The same evidence is scarcely less affirmative of the complication of cerebral phlebitis. Perhaps the veins of the diploe, which in the cranial bones are of considerable magnitude, were involved in the inflammatory mischief ; perhaps the large sinuses of the brain. The close vicinity of the lateral sinus to the diseased bone, and its formation by a dupli- cature of the dura mater, would seem to render such a complication highly probable. These views, which were brought forward in my first course of lectures here, in 183G, have been confirmed by the publication, very recently (1841) in the Medical Gazette, by Dr. Bruce of Liverpool, of two cases witnessed by himself, of "Phle- bitis of the cerebral sinuses as a result of purulent otorrhcea." He refers to several other instances of the same kind recorded by diflerent authors. This combination of disease is doubtless more common than had been heretofore supposed : and the important pathological considerations connected with it will probably receive further illustration, now that the attention of the profession has been called to the subject by Dr. Bruce's paper. Dr. Griffin has pubhshed, in the DuhUn Journal of Science, two examples of otitis attended with symptoms exactly resembling those of intermittent fever. One of them is as follows : — A young man, previously healthy, was attacked with fits of shivering, accompanied by pain in the left side of the head. At first the paroxysms were rather irregular, but they soon assumed the form of tertian ague ^ coming on every other day, at about the same hour; the cold fit commencing at noon, and lasting about half an hour, followed by a hot stage of somewhat longer duration, and then a profuse sweat. In the intermissions the pain in the head was triflino-: there was no thirst nor heat of skin, but he did not sleep. A tumour formed over the mastoid process of the left side, and was opened, and a quantity of extremely ofll'nsive brownish pus sprang out with great force. This gave much relief. The bone was carious over a space as big as a shilling. After about ten days, the pam in the head and in the mastoid process became very severe ; the patient had violent shivering fits many times in the day, great thirst, heat of skin, vomiting, and dei.- riuin : his face was flushed, and his pulse hard ; and he died within a few hours after the acci?ssion of these last symptoms. 236 DISEASES OF THE BRAIN. The most remarkable features in this case were the similarity of the fits of shiver ing to the paroxysms of ague, their regular recurrence at periods of forty-eight hours, and the circumstance that they seemed to be checked, for some time, by the treat- ment proper in ague ; namely, the exhibition of bark. The occurrence of quotidian paroxysms of the same kind has been noticed in relating some of the previous cases. I have related them to show you what different symptoms may result from inflam- mation of the dura mater ; and to put you upon your guard against overlooking the cause from which such inflammation does frequently originate. The suppuration of the tympanum, and consequent disease of the bone, are more common in scrofulous persons than in others ; and they are more apt to occur as a sequel of scarlet fever than in any other way. I conceive that the inflammation of the throat, belonging to that disorder, and often constituting all its danger, creeps along the Eustachian tube into the interior of the ear. In strumous subjects the fire thus hghted smoulders on, or if it ever goes out, is readily rekindled : that part of the temporal bone, in which the organ of hearing is principally lodged, becomes carious : the membrana tympani is perforated : the little bones of the ear come away : more or less deafness ensues ; and from time to time, or habitually it may be, there is a discharge of pus from the external orifice. At length the inner surface of the bone participates in the disease ; and then the inflammation is apt to be propagated to the dura mater, in the manner of which I have given you some instances. It is in the first onset of the inflamma- tion in the ear that remedies are most likely to be efficient in preventing this catas- trophe. Leeches applied early and repeatedly to the mastoid process, especially when that part becomes tender, as it often does in such cases, and counter-irritation afterwards, are the best means in our possession. [The frequency with which inflammation of the dura mater supervenes upon otitis, espe- cially in children, should be kept constantly in mind ; for it is only by a prompt, active, and judicious treatment, whilst the disease is confined to the internal ear, that we can have any hopes of saving the patient — when inflammation has extended to the dura mater, the termi- nation is very generally fatal. — C] If symptoms of acute inflammation within the head supervene, the complaint requires more vigorous treatment, which I shall describe when I have spoken of in- flammation of the other membranes of the brain. After what has been said, it is unnecessary to point out to you that the prognosis in these cases is very unfavour- able. But we are not to abandon them in despair. That inflammation of the dura mater may be recovered from, we know, by what happens in certain injuries of the head : and the following would seem to be an instance of recovery when the source of the mischief was situated in the ear. A young lady, after the usual symptoms in the head, lay for three or four days in a state of perfect coma, and her condition was thought utterly hopeless. Her medical attendants continued to visit her as a matter of form ; and one day they were agreeably surprised to find her sitting up, and free from complaint : a copious discharge of matter had taken place from the ear, with immediate relief: and she continued in good health. — (Abercrombie.) We cannot be sure in such a case that the matter came from the brain ; but the symptom made that supposition exceedingly probable. The case shows clearly one of two things ; either that pus may thus escape from the skull, and the patient get well; or that pus shut up in the cavity of the tympanum may produce the urgent symptoms that are known to result from cerebral pres-sure. Cases are recorded of analogous disease communicated from the carious cethmoid bone to the dura mater; the patients having had pain in the forehead and purulent discharge from the nose, and becoming at last forgetful and delirious, and dying in a state of coma. I have never met with an instance of this kind ; nor of inflamma- tion spreading inwards from the socket of the eye ; but I make no doubt that each may occasionally happen. These three, then — j(/jo/jo//a'c inflammation of the dura mater — very rare ; in- flammation of the dura mater by extension of disease from the sethmoid bone, or from the orbit — also infrequent; and inflammation of the dura mater by extension of disease from the petrous portion of the temporal bone — very common : constitute those forms of inflammation of the outermost tunic of the brain, which the physician PIA MATER. 237 may be called upon to treat. The inflammation is not always — nay, perhaps it is Iseldom, if ever — restricted to that tunic ; but it begins there ; and the essence of the Idisease is inflammation of the dura mater. Acute aracJmitis — by which I mean active and uncombined inflammation of the arachnoid membrane — is, I apprehend, a very uncommon disorder ; although that term is of frequent occurrence in medical writings. I have shown you already that inflammation may pass from the fibrous dura mater to the serous membrane reflected over it ; and thence (by what is sometimes called contiguous sympathy) to the oppo- site portion of the same membrane spread over the surface of the brain. So, hke- wise, inflammation may extend from the pia mater to the arachnoid. If simple arachnitis, of an acute kind, ever . happens, it has not been my fortune to see or to recognize it ; and I can tell you nothing about it. In truth, the authors who use the word arachnitis do not intend thereby to express unmixed inflammation of the arach- noid ; but include under that term inflammation of the pia mater also. Some apply the name meningitis to that compound affection ; and the only objection to this nomenclature is, that the dura mater is as much one of the meninges of the brain as either of the two others. In the few remarks which I have to make upon inflammation of the pia mater (or, if you will, of the pia mater and arachnoid at once), I shall chiefly follow Dr. Abercrombie : because his observations are comparatively recent, and carefully made ; because his veracity, and sobriety of judgment, and philosophical turn of mind, are well known ; and because his cases (as regards this particular affection) are quite to the point, and his descriptions clear and concise. But I must premise a word or two respecting the anatomical characters of the disease. When the upper part of the skull, and the dura mater, have been removed, you may frequently see, on the surface of the exposed brain, what seems to be a thin layer of a clear gelatinous substance : but this appearance is fallacious. Puncture here and there the transparent arachnoid, and a limpid fluid, like water, trickles out ; and the jelly-hke investment of the convolutions is gone. Now this thin serous liquid, thus collected in the meshes of the pia mater, may be the event of inflamma- tion of that membrane : but it may also be produced, and it very often indeed is produced, by simple congestion and remora in the cerebral veins. Nay, a certain amount of serosity, in this situation, belongs to the condition of health. We cannot, therefore, with any certainty, infer, merely from seeing this serous effusion, that there has been inflammation : we judge of its import, by noting the co-existence, or the absence, of other traces of inflammation ; and by the character of the symptoms that preceded death. On the other hand, we may be sure that there has been inflammation of one or both of these tunics of the brain when we find false membranes between them ; layers, i. e,, of coagulable lymph. In the effusion of this substance I conclude that the vessels of the pia mater play the main part ; both because it is always, in such cases, excessively vascular, while the arachnoid is seldom found to be so in any remarkable degree, if at all: and also, because the false membrane commonly, though not always, sends down layers between those duplicatures of the pia mater which descend into the sulci formed by the convolutions ; where, as you know, the arach- noid does not go. In fact, considering the arachnoid as the serous membrane of the brain, we should expect that, when inflamed, it would present the events or products of inflammation on its free surface ; and we sometimes find them there ; but this is very rare ; and for my own part, I look upon those effusions which he beneath the arachnoid, between it and the pia mater, as being furnished exclusively by the ves- sels of which the latter membrane is mainly composed. Now the inflammation of these membranes (taking them together) commences, and declares itself, by no fixed or uniform symptoms. The most common and striking phenomena is a sudden and long-continued paroxysm of general convul- sions. Sometimes this is the first thinsj noticed. Sometimes it comes on after a few day» of discomfort, shght headache, and vomiting. The convulsions recur, and 'SS8 DISEASES OF THE BRAIN. at length end in coma. Sometimes, again, the first attack of convulsions is preceded by violent pain in the head, setting in quite suddenly, and attended with screaming Considering, on the one hand, the intimate connection between the pia mater and the gray matter of the convolutions, and, on the other, the presumed functions of that gray matter, we might expect that inflammation of the pia mater would soon be attended with some manifest derangement of the mental faculties. Accordingly, delirium, often violent and continued, is stated by most authors to accompany and denote inflammation of the membranes ; and especially of the membranes where the}^ invest the upper surface of the cerebral hemispheres. Yet I do not find that symptom mentioned in any of the various examples of meningitis recorded by Dr. Abercrombie. He does give cases, indeed, in which there was much delirium; but they were not cases of meningitis of any kind. He relates them as instances " of a very dangerous modification of the disease, which shows only increased vas- cularity." I venture with great hurftility to question or criticise any opinion of Dr. Abercrombie's ; but I entertain no doubt about the nature of the cases which he so describes ; and I hope to convince you by-and-by that they are not examples of inflammation at all : they neither show the anatomical characters of inflammation, nor yield to the remedies of inflammation. Excluding these cases, I do not find dchrium specified as a symptom of uncombined meningitis. I shall abridge one or two of the well-marked examples of the disease. A girl, aged nine, woke suddenly in the middle of the night, screaming from vio- lent headache, and exclaiming that some person had given her a blow on the head. For the next two days she complained of some, but not much pain in her forehead, and did not even remain constantly in bed : no alarm was felt about her. On the third day she was seized with violent and long-continued convulsions, and imme- diately after the convulsions she fell into a state of deep coma ; she remained in this state, with a natural pulse, till she died, on the sixth day of the disease. When the dura mater had been removed, the other membranes appeared highly vascular, except where this appearance was concealed by a layer of yellow adven- titious membrane, spread out betwixt the arachnoid and the pia mater. This was distributed in irregular patches over various parts of the surface of the brain, but was most abundant on the upper part of the right hemisphere. It was as thick as a wafer, and in some places dipped down between the convolutions. A considera- ble quantity of it extended over the surface of the cerebellum also. A child two years old was suddenly attacked one morning with severe and long- continued convulsions. The convulsions recurred many times ; in the intervals she ■was dull and torpid, in a state of partial coma, with occasional starting, and a frequent and feeble pulse. On the fourth day she sank. The surface of the brain, when the dura mater was removed, was covered in many places, betwixt the arachnoid and pia mater, by an adventitious membrane. It was chiefly found above the openings between the convolutions, and in some places appeared to descend a little way between them. The arachnoid when detached seemed to be healthy ; but the pia mater was in the highest state of vascularity throughout ; and when the brain was cut vertically, the spaces between the convolu- tions were most strikingly marked by a bright fine of vivid redness, produced by the inflamed membrane. There was no eflusion in the ventricles, and no other morbid appearance. In another example, the whole surface of the brain was 'covered by a continued stratum of yellow false membrane, lying between the arachnoid and pia mater, and in some parts following the course of the pia mater through the whole depth of the convolutions : the pia mater and arachnoid adhered together everywhere, very firmly, by means of it: not a trace of it could be found either on the outer surface of the arachnoid, or the inner surface of the pia mater : the arachnoid itself, when separated, presented no unusual appearance, but the pia mater was everywhere ex- cessively vascular. There was no serous effusion, and the brain and cerebellum were perfectly healthy. Now in this dissection there was unequivocal evidence of acute and extensive inflammation of these membranes, or I should say, of the pia mater ; yet the symp- PIA MATER. 239 toms had been very obscure. The child in whom the disease occurred was conva- lescent from a mild attack of scarlet fever. One evening he became very feverish, and complained of his belly. Three days afterwards he had frequent vomiting, followed by stupor, and some convulsive movements of his face and arms, and death took place four days and a half after the feverishness began. We learn from this case, that general and severe inflammation of the innermost membrane maj^ exist, and prove fatal, without giving rise to any violent symptoms at all. I must trouble you with one more history, because it atibrds another examjile of what I have mentioned as being rare; viz., the effusion of the products of inflam- matory action upon the outer surface of the arachnoid,- — marking therefore very distinctly the inflammation of that membrane. It was evidently combined, however, with inflammation of the pia mater also. A child, eight months old, died after more than three weeks' illness ; which began with fever, restlessness, and quick breathing; afterwards there were frequent convulsive affections, with much oppression ; and at last severe convulsions, squinting, and coma. At an early period of the complaint, a remarkable prominence of the anterior fontanelle was noticed ; in the second week this increased considerably ; and in the third week, it was elevated into a distinct circumscribed tumour, which was soft and fluctuating, and pressure upon it occa- sioned convulsions. It was opened by a small puncture, and discharged at first some purulent matter, afterwards bloody serum. No change took place in the symptoms, and the child died four days after. A deposit of thick flocculent matter mixed with pus was found covering the sur- face of the brain to a considerable extent, and lying upon the free surface of the arachnoid. There was a similar deposition also between the arachnoid and ftie pia mater, and considerable effusion into the ventricles. If the sketches I have been giving you afford a true outline of the phenomena which attend acute inflammation of the pia mater, or of the pia mater and arachnoid jointly, what, you may naturally ask, is the nature of those cases in which there is high excitement, and much fever, and great delirium, and which are sometimes spoken of as phrenitis, or as brain-fever ? Why these are instances of acute inflam- mation of, the whole contents of the cranium ; of the brain and its membranes : of the encephalon in short ; and, therefore, the disease has, not improperly, been called encephalitis. Of this formidable malady I shall give you some account to-morrow. LECTURE XXIII. Acute and general inflammation of the Encephalon. Period of Excitement. Modes inivhich the disease may commence. Period of Collapse. Treatment. Deli rium tremens. Acute inflammation does sometimes appear to invade at once the whole of the parts that are lodged within the skull ; or, beginning in one part, it extends rapidly to all the rest. As the contents of the cranium are called, collectively, the encephalon, so the disorder which I am about to consider has been named encephalitis. It is an uncouth appellation, but it will serve its purpose. Cullen, and many others, apply the term phrenitis to the same disease. You may choose between these names, taking care to remember what they signify. The malady is sometimes described as inflammation of the membranes of the brain. I believe "this to have arisen from the circumstance that the effects of the inflammation, which become visible after death, are otten more striking and obvious on the surface of the brain, or in its ventricles, than in the cerebral substance itself. An abscess in the nervous mass can scarcely be overlooked : a softening of the cerebral pulp may escape the notice of a hasty or inexpert observer : and those changes of colour, which sometimes denote increased 240 DISEASES OF THE BRAIN. vascularity of the same part, may very easily be passed over without attracting much attention. Phreniiis, or encephalitis, or acute and general inflammation of the brain and its membranes, as it occurs in adults, presents two periods, which are marked by differ- ent symptoms, and in most instances are very distinctly observable. In the first period what are called symptoms of excitement predominate ; the functions of the organ are exaggerated as well as disordered : in the second period those symptoms appear which are comprised under the term collapse. Sometimes these two sets of symptoms, instead of ibllowing each other, are more or less mixed and confounded together. But the distinction is real, and requires to be attended to. The symptoms that characterize the period of excitement, are pain of the head, often intense and deeply seated, or extending over a large part of it ; a sense of con- striction across the forehead ; throbbing of the temporal arteries, flushing of the face; injection of the eyes, which have a wild and briUiant look ; contraction of the pupils ; preternatural sensibility to external impressions, amounting frequently to impatience of light, and of sound ; violent delirium ; want of sleep ; paroxysms of general convulsion ; a parched and dry skin ; a frequent and hard pulse ; a white tongue ; thirst ; nausea and vomiting ; constipation of the bowels. You are not to look for all these symptoms in every case, nor to conclude that your patient has not inflammation of the brain because the phenomena I have been enumerating do not all present themselves, or do not take place in any regular order of succession. In fact, we find, in actual practice, that encephalitis is apt to come on, to commence I mean, as far as symptoms are concerned, in three or four different ways. Sometimes there is a sudden alteration of manner, and the patient, complaining probably of his head, becomes all at once and furiously delirious ; and fever is lighted up. These are symptoms which cannot pass unnoticed, and which imme- diately direct one's attention to the head. They may, however, be fallacious, as we shall see by-and-by. In other cases the first thing remarked is nausea and vomiting : and those symp- toms may soon cease ; or they may continue several days, and even sometimes throughout the whole course of the disease. Bitter fluids are brought up, yellow or green, and evidently containing a good deal of bile ; and whatever is introduced into the stomach, even a small quantity of the most simple drink, is immediately rejected. With this state of matters there is generally much constipation, and the bowels refuse to act except under the stimulus of strong purgatives. It is important to attend to these symptoms ; for, occurring, as they usually do, with headache, they may easily deceive a person who is not previously aware of what they may portend. If the patient has not been previously subject to sick headaches, and if the epigastrium and abdomen be natural, not tender, nor distended, as they are apt to be when the stomach itself is in fault, we have the more reason to look narrowly into the case, and to suspect that some serious mischief of which the nausea is a token, may be going on in the brain. I would observe, by the way, that where there is much vomiting of bile, persons are apt, both patients and their doctors, to blame the liver, to set down the disorder as bilious ; but you ought to be aware, that whenever vomiting is often repeated, or long continued, bile is to be expected in the matters brought up : the action of the duodenum, as well as that of the stomach, is inverted ; and the bile passes in the wrong direction. If you have ever suffered from sea-sickness, you must know that after the puking has gone on for a little while, bile is constantly voided. Again, some cases of acute inflammation of the brain set in neither with sudden and great disturbance of the intellectual functions, nor with sickness and vomiting, but with a paroxysm of general convulsion, such as often ushers in an attack of me- ningitis. This symptom, according to Andral, is a much more certain sign of cere- l)ral inflammation, than the occurrence of active delirium ; and I quite agree with him in so thinking. It is probable (but I speak conjecturally only) that this diversity of symptoms, marking the onset of encephahtis, may depend upon the part in which the m- 1 ENCEPHALITIS. 241 flammation begins ; and that it is soon propagated from that part to the whole of the organ. I should suppose that when nausea and vonriiting are the earliest symptoms, the inflammation has taken its point of departure in the cerebral pulp ; in the sub- stance of the brain ; and that when the attack comes on with a sudden fit of convul- sion, the inflammation has commenced in the pia mater or arachnoid. This is con- sonant with what we know of inflammation of those parts when they are separately afl^ected. Again, it seems to me presumable that the cases which are characterized by early and fierce delirium are cases in which the inflammatory action has invaded the whole of the encephalon, substance and membranes, simultaneously. I say I offer these as conjectures of my own : what it is of importance for you to remember is, that inflammation of the brain does commence in the three several ways that I have been describing. There are some cases, however, that cannot be brought within even this general rule. They begin in some irregular or obscure manner, or with some unusual phe- nomenon. Andral states that he has seen a few striking instances of inflammation of the brain, of w^hich the flrst sign was a sudden loss of the power of speech ; and Dr. Abercrombie relates a very remarkable case in which the same thing happened. I call it very remarkable both on account of the singular manner in which the dis- ease first showed itself, and because it furnishes an example of encephalitis produced by direct exposure to intense heat of the sun — insolation ; an event very uncommon in our chmate. It occurred in the practice of a surgeon at Selkirk, in Scotland : — "A young man, aged 16, bathed twice, on the 5th of June, 1818, in the river Tweed. After coming out the second time he lay down on the bank and fell asleep, without his hat, and with his head exposed to the direct beams of a hot sun. On awaking, he was speechless ; but walked home, and seemed to be otherwise in good health. He was bled and purged, and the next day recovered his speech, but lost it again at intervals several times during the three or four following days. He was forgetful, and his look was dull and heavy : he made little complaint, but when closely questioned said he had a dull uneasiness at the back of his head. In a few days more he had squinting and double vision, and a very obstinate state of bowels, and his pulse was GO. After further bleeding the pulse rose to 86 ; but he sank gradually into coma, and died on the 30th. The substance of the brain in general was found highly vascular, and a very con- siderable extent of it was in a state of softening mixed with suppuration. The ven- tricles were distended with fluid, and the membranes in many places were much thickened. One very curious circumstance (affording perhaps some explanation of the readiness with which the inflammation was produced) was, that the cranium was of very unequal thickness at its upper part ; in one spot, as big as a sixpence, it was as thin as writing-paper, and transparent. However, the phenomena which I mentioned at first constitute the common and ordinary symptoms of acute inflammation of the brain and its membranes. They continue for a variable period ; from twelve hours to two days, or more ; and then they are succeeded by others, which characterize the second stage of the complaint, or the period of collapse, as it is called. These result, I apprehend, from the events and products of the inflammatory action ; the violence of which is over or abated. The patient ceases to complain of headache ; instead of being excited or wildly deli rious, he mutters indistinctly, and falls into a state of stupor, from which it is difficult. and at length impossible, to rouse him. His vision and hearing are no longer pain- fully acute, but dull, or perverted ; strabismus and double vision are not uncom mon ; and the pupil, from being contracted to the size of a pin's head, becomes first oscillating, then widely dilated, and ultimately motionless. The patient is not shalcen, at this period, with violent convulsions ; but twitchings of his muscles, and startings of their tendons come on, and some of his limbs are agitated with tremors, or become powerless and palsied ; the countenance is ghastly and cadaverous ; cold sweats break out ; the sphincters relax : at length the coma becomes profound, and life ceases. The disease, when it proves fatal, as it too often does, mostly runs a rapid course. It may kill in as short a time as twenty-four or even twelve ^ours • «^r the natietu 16 242 DISEASES OF THE BRAIN may struggle on for two or three weeks. The morbid appearances met with in the dead body are very various. Serous or puriform effusion into the ventricles, and into the meshes of the pia mater ; layers of coagulable lymph between that mem- brane and the arachnoid ; softening of the cerebral substance, Avith pus infiliered into the softened parts; or great vascularity, shown by a pink or purplish molding of its cut surface, giving it a stained appearance. Let us next consider the treatment required for this frightful disorder. It is quite plain that in an organ so essential to life, and of such dehcate organiza- tion as the brain, and in which changes so irreparable in their nature as many of those I have just enumerated, so readily take place under acute inflammation, we cannot hope to be of much service unless we see and treat the case at an early period. On this account it becomes exceedingly important to recognize the nature of the disease, at its very commencement ; and, therefore, I have taken pains to point out to you the various forms which it may assume, while it is yet within the reach of remedial measures. The principal of those measures are blood-letting, purging, and the application of cold to the head. All the particulars of the antiphlogistic regimen are to be rigidl}^ observed ; the patient should be kept as much as possible in silence, and darkness, with his head high, and on a firm pillow. And the antiphlogistic reme- dies are to be employed with decision and energy. With respect to bleeding I can only repeat what I have said before : the blood should be drawn in a full stream, and suffered to flow till some decided impression is made upon the pulse ; or until syncope occurs, or is evidently at hand. After the patient has rallied a little, blood should be taken hy cupping or leeches from the back of the neck, or the temples, or the mastoid processes ; and these depletory measures must be repeated according to the violence or continuance of the symp- toms which first demanded them. The application of cold to the head is a remedy of great importance in this disease. The head must be first shaved, and the mere removal of the hair is sometimes fol- lowed by a manifest abatement of some of the most urgent symptoms ; of the pain, for example, and of the delirium. In cases such as I am now supposing, it will not be enough to apply wetted cloths to the head : the application must be colder than the ordinary temperature of the cold water ; and it may be made colder by ice ; and the best way to ensure a permanent depression of the superficial heat is to put some pounded ice with a little water into a thin and flexible bladder, and to lay it on the patient's head : there should not be too much ice, or its weight may be injurious. This is generally very grateful and pleasant to the feelings of the patient ; and we often have the satisfaction of perceiving that, wnth the reduction of the external heat of the head, there is also an evident mitigation of the violent symptoms ; the agi- tation and delirium are calmed, and the patient sleeps, or recovers his senses. Another excellent and most powerful method of applying cold, is by pouring cold water in a slender stream upon the vertex of the head, until it produces some marked effect. Of course this as well as all other strong measures, must be adopted with great caution, and its influence closely watched : I mean it is not to be left to the discretion, or indiscretion, of domestics and nurses. Dr. Abercrombie tells us that he has sfen a strong rnan, submitted to the operation of this cold douche, "thrown in a very few mmutes into a state approaching to asphyxia, Avho immediately before had been in the highest state of maniacal excitement, with morbid increase oi strength, defeating every attempt of four or five men to restrain him." Of the efTect of this measure in a somewhat diffl'rent morbid condition, he gives an instance, which I will quote, because it shows, in the first place, the striking power of the remedy ; and, secondly, the simple mode of applying it. A strong plethoric :hild, five years old, after being for one day feverish, oppressed, and restless, fell rather suddenly into a state of perfect coma. She had been in that state about an hour when Dr. Abercrombie saw her. She lay stretched on her back motionless, nnd completely insensible; her face flushed and turgid. She was raised into a Filling posture and a basin being held under her chin, a stream of cold water was ENCEPHALITIS. 243 directed against the crown of her head. In a few minutes, or rather seconds, shp. was completely recovered ; and the next day was in her usual health. This measure also is to be repeated, according to the circumstances of the case. Some persons recommend that a constant dripping of cold water upon the patient's shaven head should be kept up. This may easily enough be managed by means of a sponge and funnel placed a little above the head. Andral mentions his attending with another physician (M. Recamier) a young man who laboured under all the symptoms of acute inflammation of the brain. Cold water was made to drop slowly upon his head, and complete recovery took place, although no other active treatment of any kind was adopted. In strongly recommending this efficient remedy to your notice, you will not un- derstand me to advise that it should supersede the use of copious blood-letting ; i* is to be employed as an auxiliary to the lancet ; not as a substitute for it. The third remedy which I named, that is to say, purging, is also of great im- portance and efficacy. But it must be hard purging. There is a great tendency to obstinate constipation in most cases ; and this must be overcome, and free and frequent evacuations from the bowels obtained ; five grains of calomel and fifteen of jalap should be followed in three or four hours by a strong black dose ; and after that I should give, in such cases, three or four grains of calomel every four hours, and repeat the black dose at least every morning, until the symptoms gave way. If the mercury thus exhibited affect the gums, so much the better ; bat we must not, in this disease, combine it with opium, to prevent its passing ofTby the boAvels. Dr. Abercrombie uses this strong language in reference to the value of purga- tive medicines in acute inflammation of the brain: — "In all the forms of the dis- ease, active purging appears to be the remedy from which we find the most satisfactory results ; and although blood-letting is never to be neglected in the earlier stages of the disease, my own experience is that more recoveries from head affec- tions of the most alarming aspect take place under the use of very strong purging than under any other mode of treatment. In most of these cases, indeed, full and repeated bleeding had been previously employed, but without any apparent effect in arresting the symptoms." He has found the croton oil the most convenient medi- cine for this purpose. Dr. Abercrombie is disposed to regard mercury as being useful in affections of the brain, chiefly in virtue of its purgative operation: and the opinions of a phy- sician of his large experience, and observing mind, must and ought to have great weight. But I must not conceal from you my own persuasion that, in the early periods of acute inflammation of the encephalon (and it is of the early periods that I have hitherto been speaking), if the mercury comes in a short time to produce its specific influence upon the gums, a great change for the better will often be per- ceived. Such is the result of my own observation. Recollect, however, that you are not to give calomel with the direct object of affecting the gums, but as part of the purgative plan, and j^ou take the chance of its specific effect. You must not combine opium with it, for two reasons ; first, you would thereby shut up the bowels, and deprive yourself of the use of one of your best weapons ; and, secondly, you would incur the risk of augmenting and perplexing your patient's head symp- toms, and of puzzling yourself; since you would not be able to determine how much of the coma that ensued was owing to the progress of the disease, how much to your remedy When the second order of symptoms have arrived, those which are included under the general phrase of collapse, and which commonly result, I fancy, rather from the products of the inflammation than from the inflammation itself; from softening, that is, and from pressure exerted by efflised serum, or lymph ; when this order of symptoms make their appearance, I believe the time for doing much good bv active bleeding has gone by. If, however, blood-letting has not yet been em- ployed, and especially if the pulse continue hard, whether blood has been already abstracted or not, it will be right to give the patient the chance of that remedy. Of the propriety of doing so, take the following illustration : — " A girl, aged eleven, nnd 244 DISEASES OF THE BRAIN. violent headache and vomiting, with great obstinacy of the bowels ; and these symp- toms were followed by dilated pupils, and a degree of stupor bordering upon perfect coma; pulse 130. She had been ill five or six days; purgatives, blistering, and mercury to saHvation, had been employed without benefit. One bleeding from the arm gave an immediate turn to this case, the headache was relieved, the pulse came down, the vomiting ceased, the bowels were freely acted upon by the medicines which they had formerly resisted, and in a few days she was quite well." (Aber- CROMBiE.) I must recite one other case — from among many which go to the same effect — to show the occasional influence of hard purging. " A young man who had had cough and dyspnoea, and been bled for those symptoms, appeared conva- lescent. One evening he became affected with headache, and some vomiting. About midnight, having got out of bed to go to stool, he fell down in a state of vio- lent and general convulsion. The convulsion returned during the night six or seven times with such violence that one of the paroxysms continued without intermission for an hour. The pulse during the night, varied from 60 to 120." (I should have mentioned before this great and rapid fluctuation of the pulse in respect to its fre- quency, as being a very common circumstance and sign, in inflammatory affections of the brain.) " At first it was found impossible to bleed him, on account of the vio- lence of the convulsions ; but about seven in the morning a full bleeding was ob- tained, after which the convulsions ceased, except some slighter attacks during the day^ which appeared to be arrested by pouring cold water over his head. The next day he was oppressed ; with occasional tremors of the limbs, and some vomiting, and he had one or two threatenings of convulsion. He took repeated doses of active purga- tives with little effect ; and on the following morning he appeared to be sinking into a state of perfect coma, with a pulse at 50. Croton oil was now given, which operated powerfully seven or eight times. He passed a good night ; and the day afterwards was free from complaint." Having this evidence of the separate efficacy of the three remedies — blood-letting strong purgatives, and the local apphcation of cold to the head — we have much en- couragement to put them into combined operation in these very serious cases, espe- cially when Ave have the opportunity of using them at an early period. ShoiiJd the disorder happily yield to these measures, great care will long be required on your part, and great prudence on the part of the patient and his friends, lest the recent mischief should rekindle. A relapse is even more perilous than the first assault of the disease. Such prudence and care will consist chiefly in the avoidance anc denial of all that might excite and disturb the brain; whether it be a premature return to animal food ; or indiscreet and fatiguing interviews and conversations ; or the too early resumption of the cares and concerns of business. Are we to employ blisters in this disease ? Not in the outset, during the period of excitement. They only add to the irritation, and make matters worse. And especially you should avoid putting them, as many are apt to do, upon the head itsell", at that stage of the disease. We should not suppose, a priori, that they could then, and in that place, have any beneficial effect. They cannot divert the blood from the inflamed part ; but they may attract it towards the encephalon. If they could be expected to do any good at all, it would be when they are placed upon the feet or legs. But this kind of revulsion is better accomplished by means of mustard poultices, or fomentations with hot water, which are often of much apparent service, in addition to the measures already spoken of. Experience confirms what reason teaches us to look for in this matter. When, however, the patient had sunk into a state of coma, he has sometimes, in my experience, emerged from that condition after a cap of bhstering plaster has been put upon his head. It is only when the violent symptoms of excitement have abated that I can venture to advise you to employ blisters: they may then be applied to the nape of the neck, or behind the ears, or to the head itself. The symptoms which I enumerated as marking the period of collapse or sinking, are fearful symptoms ; but the conditions on which they depend are not, necessarily, hopeless conditions. These symptoms do not always procped from fatal disorganiza- L'cn of the bram, but sometimes (there is reason to beUeve) from simple exhaustion ENCEPHALITIS. 245 of the nervous power. And this is a point of critical importance. Patients appa- rently moribund are occasionally saved by the judicious administration of stimu- lants and restoratives; of ammonia, Hoffman's anodyne, beef-tea, wine, and, it may be, of well-timed opiates. This plan of treatment you must therefore cautiously try, when an extreme degree of collapse occurs. If the structure of the brain be already seriously injured, and the disease irretrievably mortal, no harm can be done ; while in doubtful cases, and when the symptoms resuh from mere depression of the vital powers, the patient may be rescued ; and this chance in his disease must not be thrown away. Do you ask whether there be any mode of discriminating these opposite condi- tions, one of which is within, and the other beyond, the range of possible recovery ? I believe there is. If the tendency to death by coma be strong, the prospect is very discouraging : if, on the other hand, the symptoms that mark the mode of dying by asthenia predominate, you may hope to push the patient through. But to succeed, you must watch him hour by hour. Pallor, a feeble and flying pulse, extreme de- bility and tremors, coldness of the extremities, a want of power to respond to exter- nal impressions ; these are alarming, but not absolutely desperate symptoms, espe- cially if the mental faculties remain. Whereas profound stupor, partial palsy, profuse sweats, are of the worst omen ; yet even these do not preclude the trial, together with blistering the head, of internal stimuli ; and no other plan affords even a gleam of hope. There is just one caution that 1 wish to mention before I leave the subject of acute encephahtis ; and it apphes to all cases of coma and insensibility, and especially when there is any paralysis mixed with the coma : it is, that you should daily ascertain that the bladder is emptied. Always make the attendants show you the urine that has been passed ; and lay your hand upon the hypogastric region, and try whether there is any undue hardness or prominence there, produced by the distended blad- der. I shall revert to this matter more particularly at some future time ; and I con- tent myself with merely suggesting its importance to you now, in all cases of head affection. If the patient does not or cannot empty his bladder, of course it must be emptied for him, by means of a catheter. It would seem perhaps the most natural arrangement if I next proceeded to speak of cerebral inflammations which are chronic, or partial. These forms of disease are more common, in adults, than acute and general encephahtis. I shall be obliged also to treat, separately, of inflammation of the brain as it is modified by its occurrence in young children, — of what is called acute hydrocephalus. But before I touch upon any of these, I am desirous to bring under your notice at once a very singular and extremely interesting complaint, which is not, I am persuaded, in its essential nature, inflammatory, but which may easily be mistaken, and has over and over again been mistaken, for acute inflammation of the brain and its membranes, with the consider- ation of which we have just been occupied. The mistake is the more serious, because the remedies I have been recommending for encephalitis, and especially blood-letting, not only are not required, but are in most cases positively injurious, in the disorder of which I am now about to speak : and which is best known under the appellation of delirium tremens. Nay, this affection of the nervous system may actually be brought on, in a predisposed subject, by the abstraction of blood. I go apparently out of my way in taking notice of this complaint now, but I do so that I may have the opportunity of contrasting it with encephalitis, while the phenomena of the latter disease are fresh in your memory. It certainly resembles it also in many respects : and it has been regarded as an inflammatory disorder by some excellent pathologists. The symptoms which mark a decided attack of delirium tremens, and which have sometimes been found so equivocal, are very striking. You will be sum- moned to a man who is supposed to be mad, or to have brain fever. You find him with a red face, perhaps, and injected eyes, talking wildly and incessantly, fidgetinj/ with his hands, affected often with tremors of the limbs, havincr a rapid pulse, and oathed in sweat. Now it is very natural that a person not on his guard should look v3 S4$ DISEASES OF THE BRAIN. upon these symptoms as indicatino^ inflammation within the head. But if you look closely into the matter, you will find in the state of the patient, and in his history, some things very peculiar. The deHrium you will generally find to be, not a fierce or mischievous delirium, but a bu>iy delirium : he does whatever you desire him to do, but he does it in a hurried manner, with a sort of anxiety to perform it properly. During the approach of the malady, while he is yet able to go about, he manifests great impatience of any interference, or advice, or assistance, in his ordinary duties, which he sets about in a bustling and blundering manner. His loquacity is extreme, and he refers to matters that are not present before him : he is not altogether inattentive to the objects and proceedings that are going on around him, but his mind wanders away to other subjects. There is an odd mixture of the real and the ideal in his thoughts and language. Sometimes he is ver}^ suspicious that those who are about him intend him some injury ; or that he is surrounded by enemies. You will find also that he does not sleep ; that he has not slept perhaps for several nights, but been restless and rambhng ; and you will generally learn that he has been habitually intemperate, or subject to some great source of care, or anxiety, or excitement : and in many cases he has recently been somehow or other debarred from his customary stfmulus. In addition to these points in his history, you will frequently be told that having been unwell, first he has been kept upon low diet, and then, as the delirium came on, he has been freely bled ; and that he has been none the better, but com- monly the worse for the bleeding. When you gather such particulars as these from his friends (for upon his own statements you cannot place any reliance), and when you find the delirium to have the characters I have been attempting to do- Bcribe, and especially when there has been obstinate watchfulness, and the tongue is moist, and the skin is sweating, you may be pretty certain that j'our patient is afTected, not with inflammation of the brain, but with dehrium tremens ; and that if you bleed him further, you will make him worse. But what are you to do under such a fearful state of things? Why the great indi- cation is to procure sleep ; and the remedy which, in nine instances out of ten, you will find successful, is opium. The beneficial effects of this drug, in tolerably favourable cases of delirium tremens, are really surprising. I will give you an example or two, which will be more instructive than any abstract description. In the year 1831 I was requested, by a most respectable practitioner in this town, to visit a patient of his whom he reported to have had phrenitis, for which he had been freely bled, cupped from the back of the neck and purged ; and Avho, he believed, was now rapidly sinking, and not likely to survive many hours. I found the patient, a middle-aged man, with a red face, ferrety eyes, a frequent pulse, bathed in perspiration, busy with his hands, which trembled a htlle, and talking much and incoherently. He was particular!}' anxious that his lecfs should not be scarified, told me he was willing to do any thing I pleased, if I would not scarify his legs, nor let any one else scarify them. There was nothing the matter with his legs, nor had it entered any body's head but his own, that they wanted scarifying. He had not slept for several nights. He had been intemperate, especially of late, drink- ing a good deal ; and somewhat anxious about his aflairs : he was a builder. His former historj'^ was not very promising. He had brought up a good deal of blood a few months before, and some years previously he had had jaundice ; latterly he had been troubled with indigestion. I saw him in the afternoon, and prescribed one-third of a grain of morphia : in the evening he was just in the same state. I then directed half a drachm of laudanum to be given immediately, and twenty drops every two hours afterwards, till he slept. I said to the gentleman who had called me to the case, that I thought it very likely our patient might be well the next day ; he smiled and shook his head. I was obliged to leave London, early the next morning, for two or three days ; on my return, I learned from the medical man that the patient took five doses of the laud- anum, after which he fell asleep, and slept soundly, and for a long time, and then awoke (to his attendant's extreme surprise and satisfaction) sane, and well. I was asked by the apothecary of the Middlesex Hospital to see a publican in inat neighbourhood. I found a large strong man between 30 and 40 years of age DELIRIUM TREMENS. 247 He had been Avithout sleep for several nights, somewhat incoherent, and (what is not usual in such cases) violent, threatening and striking those about him because they refused him access to strong drink. He was joint proprietor with another in a gin-shop, and for some time previously he had been a sot, and daily muddled with drink. He told me he was quite well; there was not much tremor. I found that the object of his partner and relations in sending for me was that I might sanction his removal to St. Luke's, for his strength made him altogether unmanageable, and his insane and extraordinary conduct was hurting the business of the house. I declined to take any part in consigning him to a mad-house, and recommended morphia. After one full dose he soon slept ; and the next day he was quite rational, and comparatively well. These are the broad outhnes of dehrium tremens ; there are many other features wanted to complete the portrait of the disease, which I shall endeavour to paint at our next meeting. LECTURE XXIV. Delinum Tremens, concluded. Chronic Inflammation of the Brain. Softening, Suppuration, Mscess, Induration, Tumours in the Brain. I DREAV a rude outline, yesterday, of that singular and interesting malady usually denominated delirium tremens. The disease is very common in this country ; for its causes are in common and powerful operation. You will meet with it in every walk of life : and you will be almost sure to witness several examples of it during the course of every year, in any of our metropolitan hospitals. It is not a chronic or vague complaint, likely to be treated with placebos, or by waiting upon nature. Active measures are pretty certain to be adopted ; and, in many cases, one plan of treatment, vigorously pursued, will hurry the patient to his grave ; another plan will restore him to health with an almost magical celerity. It certainly bears a strong resemblance to that most formidable disease, inflammation of the brain and its membranes ; but the great remedy for encephalitis acts like a poison in pure deli- rium tremens ; and the drug, by the timely and careful administration of which we can often promise a speedy cure in dehrium tremens, is one which we must care- fully avoid, in the earlier treatment, at least, of encephalitis. Accuracy of diagnosis, therefore, between these different disorders, with similar outward signals, becomes of the very highest importance. Delirium — tremens. — There is delirium always ; and there is generally, but not always, tremor. The name is a good enough name, in my humble opinion ; yet it has been found fault with, because the trembling is not in all cases present; and some have, therefore, christened it delirium e potu, or delirium ebriositatis : but these terms are open to just the same objection as the other; for though the disorder is most commonly connected with intemperate habits, that is not always the case. One very curious fault has been discovered in the name : it is said that the delirium cannot tremble ; and, therefore, that it is better to say, delirium cum tremore, or tremcfaciens : and you would hardly suppose it, but there has been a sort of conten- tion for the honour of thus mending the nomenclature of this disease. But they w^ho do object to delirium tremens appear to see no harm in delirium ferox ; whereas it is just as incorrect to say delirium is fierce, as to say that it trembles: it is the patient who is furious, even as it is the patient who trembles ; and all this dispute about a name is mere trifling. It matters not what we call a disease, so that the name conveys no erroneous theory as to its nature or treatment. No such source of error attaches itself to the term dehrium trenjens : and, therefore, if it be only ic avoid the inconvenience of change, we will adhere to that term. Recollect that the strong features of the complaint are sleeplessness ; a busy, but not angry or violent delirium ; constant chattering ; trembling of the hands, and an 248 DELIRIUM TREMENS. eager and fidgety employment of them. To these are added other symptoms which, though they are not so calculated to strike a looker-on, are of not less importance, masmuch as they help to establish the diagnosis. The tongue is moist and creamy ; ihe pulse, though frequent, is soft; the skin is perspiring, and most commonly the patient is drenched in sweat. The sweat is usually described as having an offensive or a peculiar smell : I cannot say that I have observed it to be so. The face also is said to be pale ; but that, I know, is not always the case, and therefore this point cannot be rehed upon as a distinguishing circumstance. In one of the instances which I related in the last lecture, the face was flushed, and the eyes red and ferrety. Let me remind you, in a few words, of the peculiar characters of the delirium. If you question the patient about his disease, he answers quite to the purpose ; de- scribes, in an agitated manner, his feelings, puts out his tongue, and does whatever you bid him : but immediately afterwards he is Avandering from the scene around him to some other that exists only in his imagination. Generall}'- his thoughts appear to be distressful and anxious ; he is giving orders that relate to his business to per- sons who are absent ; or he is devising plans to escape from some imaginary enemy : he fancies that rats, mice, or other reptiles, are running over his bed, or that strangers are in his room. He looks suspiciously behind the curtain, or under his pillow, and he is perpetually wanting to get out of bed ; but he is readily induced to lie down again. It is very seldom that he meditates harm, either to himself or to others ; there is rather a mixture of cowardice and dread with the delirium. All the points that I have been mentioning require to be investigated in every case of this nature : and an inquiry into the previous history of the patient, into what the French call the commemorative symptoms, is equally important. In a large majority of instances you w^ill find that he has been an habitual drunkard ; and very frequently that from some reason or other this habitual stimulus has been diminished or taken away. Some accidental illness has befallen him, and he has been restricted to low diet, and, as a sailor would say, "his grog has been stopped." When, with symp- toms such as I described just now, you hear a history of this kind, you may be satisfied that the disease is not inflammation of the brain, but dehrium tremens. I beUeve that habitual intoxication of any sort may lead to this disorder; but distilled spirits more surely than wine ; wine more than beer. I make no doubt either, that what is alleged of the habitual use of opium, in preparing a person to suffer in the same way upon its being withheld, is quite true, although I have had but few oppor- tunities of noticing such cases. But the disease is not confined to drunkards, although it is so commonly connected w'ith that pitiable vice, as to have been called mania e potu. You meet with it occa- sionally in men who have overstained their nervous system by other modes of strong excitement. Long-continued mental anxiety, that state of mind in which gamblers and great speculators (who are indeed gamblers) are accustomed to live, may cause it ; any thing by which the mind is over-wrought. A well-informed medical man, of temperate habits, told me a few days ago that he was on the brink of delirium tremens in the year 1825. He had foolishly entangled himself in some of the specu- lations which prevailed here like an epidemic at that period, and his mind was on the tenter-hooks of suspense and apprehension for some time. He could not sleep, and he found himself everlastingly chattering. It comes on in the course of certain diseases ; as sometimes, for example, in apoplexy : and it is a very common result of bodily injuries and accidents, and of surgical operations ; or, I should rather say, that it often follows such diseases and casualties ; for it is, even then, the conse quencc of the treatment and regimen to which the patients are subjected, rather than of the surgical or medical complaint. And it is certainly more apt to occur, under these circumstances, in old people ; and in those who, being younger, are known to have been intemperate. So frequently does the delirium manifest itself upon the ".essation of the accustomed spur, that the continually recurring stimulus has been regarded as the predisposing, and the privation of that stimulus the exciting cause of the affection. Sometimes, however, it comes on in men who are perpetually fuddled, even although they have not intermitted their usual indulgence in drink. VVe had a porter (an old soldier he had been) at the Middlesex Hospital, who was of DELIRIUM TREMENS. 249 great use to us as a subject to practice upon, and to show to the pupils. I never saw him so drunk as to be unable to perform his duly : but I cannot conscientiously say that I ever saw him sober. Every three or four months we were sure to have him in the wards with delirium tremens. Sometimes he fell into the hands of one physician, and sometimes of another; but in one of his attacks he slipped through our fingers. I am not certain that he was not nominally my patient on the last and fatal occasion : but assuredly he was never an example of the disease coming on from the adoption of more temperate habits. We often find that the malady shows itself immediately after an unusually severe debauch, which has disturbed the stomach and bowels, and left behind it a proportional degree of exhaustion and languor. Without knowing why it should be so, my own experience would lead me to the belief that delirium tremens is very uncommon among women. The number of beds for females in the physicians' wards of the Middlesex Hospital is somewhat greater than for males. On the men's side of the house cases of dehrium tremens are very frequent: whereas I scarcely remember any on the women's. Yet each sex is obnoxious to its main causes. The gin-shops of this town are said to draw a fearful crowd of votaresses. And we might expect that the more sensitive character of the female constitution would render them especially liable to this peculiar consequence of the abuse of alcohol. My experience, however, is such as I tell yon. On the other hand, Dr. Roots thinks that he has seen quite as many instances of delirium tremens attacking females as males. The result of M. Rayer's observations is more in accordance with my own. Of 176 patients seen by him, seven only (not one in twenty-five) were women. A still smaller ratio is recorded by Bang, ten in 456 : less than one in forty-five. The disorder appears to be more common in the summer than in the winter months. The pecuhar nature of the complaint, and the proper method of treating it, were first brought into general notice in 1813 by a little work of Dr. Sutton's, of Green- wich. He saw a good deal of the diseases of the smugglers, and of the customers of the smugglers, who frequent the coast of Kent ; and he was struck by the different event of this disorder in the hands of different practitioners, according as bleeding or narcotics were adopted. It is the same disease which Dr. Abercrombie speaks of as " a dangerous modification of meningitis, which shows oniy increased vascularity." Dr. Bright also includes it among his cases of " Arachnitis." Both these eminent physicians had learned, however, that the complaint requires a particular method of treamient. Of late years many essays and papers on the same malady have ap- peared in this country, in France, and in the United States, where the disorder is common. But even now it is not so well understood, throughout the profession, as it ought to be. You may ask me, what is the essential nature of the disease : and I can only- state in reply that it consists in nervous irritation. Some persons hold that this is tantamount to no answer at all ; but I do not agree with them. They seem to think that if you assign a state of the brain or nervous system which is not visible or tangi- ble, you lose yourself in mere hypothesis. But we see a number of striking phe- nomena in this and in many other forms of disease, for which phenomena we can trace by our senses, in the organ affected, no physical cause ; yet we are sure that they have a cause ; and we call that cause irritation : if we had given it some Chi nese name, it would have been all the same. From certain symptoms we infer irri tation ; just as from certain phenomena we infer gravitation. I do not mean to put the two upon an equal footing ; or to pretend to say that the laws of irritatipn are established wiih any thing like the certainty which belongs to the ascertained laws of gravity : but we pursue the investigation of these laws in the same Avay in the one case as in the other: and it is quite idle to object to an arbitrary term, like irri- tation, because it is meant to represent something which makes itself known to us only by its efl^ects. Now I apprehend that we are borne out, by authentic facts, in believing that cer- tain changes in the blood-vessels will lead t5 irritation, and at length to inflammation, of a part. But there are other sourcs of irritation; and irritation in its turn wiJl 250 DELIRIUM TREMENS lead to changes in the blood-vessels. In the one case we bring oacK the blood-vessels to their healthy condition, and the symptoms of irritation cease. In the other we calm the irritation, and the previous effect of it upon the blood-vessels stops. In other words, deviations from the natural and healthy state of the nervous system are sometimes the cause, and sometimes the consequence, of disturbances in the sangui- ferous system. Whether this be good philosophy, or whether it seem to you rational and intelligible, I do not know ; but it is the best explanation that I can offer you ■• upon this subject. I apprized you, in the last lecture, that the great remedy in delirium tremens is sleep ; and that our most powerful means of inducing sleep are to be found in opium. The opium must be given in full doses ; and it must be fearlessly repeated if its desired effect does not follow. If the patients pass many nights without sleep, they will die. I have tried various forms of opium ; and I am quite satisfied with morphia. Some persons, however, have not found it so successful as solid opium, or as the common tincture, laudanum. You may try the one or the other, or the one after the other, if you please. No particular rules can be laid down that will suit all cases. After clearing out the bowels by a moderate purgative, you may give three grains of solid opium ; and if the patient show no inclination to sleep after two or three hours have elapsed, you may begin to give one grain every hour till he does sleep. Or you may prescribe corresponding quantities of the acetate or muriate of morphia : or of laudanum : or of the black drop : or of Battley's sedative liquor. His room, meanwhile, should be kept dark and quiet. If he sleeps for some time he will awake calmer and more sensible ; perhaps perfectly so : and you must withhold the remedy, or continue it in smaller or less frequent doses, according to the circumstances of the case. Dupuytren found opiate enemata of great efficacy in the cases of traumatic deli- rium which came under his care. That mode of administering the narcotic may properly be adopted, if there be any impediment to its reception or retention by the stomach. Now sometimes this opiate treatment alone is quite enough : sometimes it is not. You will meet with patients who resist very large doses of the drug ; but who prc- senth'- sleep, or become composed, if j'ou give some of their accustomed stimulus with it: "a hair (as the vulgar saying goes) of the dog that bit them :" if you put their opiate dose into a glass of gin, or a pint of porter. Nervous exhaustion goes along with and augments the nervous irritability. This I have continually expe- rienced with hospital patients. And I rather think that you may get some clue to the particular cases which require this treatment, by examining into the slate of the digestive functions. If you learn that, notwithstanding the intemperate habits of the patient, his appetite for food has continued unimpaired, and his digestion sound, you will, I believe, generally find that good nourishing diet, strong broths for example, and the opium, will suffice for the cure. But if the powers and natural sensations of the stomach have been injured and perverted, as is too often the fact, then a temporary recurrence to the habitual stimulus Avill frequently be necessary : and it is well to ascertain, in such cases, what the stimulus has been, whether spirits, or beer, or wine, and to order it accordingly. Of course this is not to be continued after the patient has recovered from his delirium ; but the stimulus under these cir- cumstances must be cautiously witWrawn. When the stomach retains its power of digestion, the bad habit of drinking ought to be broken off at once : and if, after sleep, you can get the patient to eat heartily of a beef-steak, or mutton-chop, I should always advise it. There are some things which I find it necessary to mention, for the sake of dis- commending them. I know persons who in treating these cases combine calomel with the opium. And they say that they cure their patients so ; and I make no doubt that they do; neither can I doubt that the same success would have followed the same quantity of opium without the calomel. In pure cases of delirium tremens I advise you not to give calomel. I know no possible good it can answer : it is itself a source of great irritation to the nervous system in many persons : and if it romes to affect the mouth, you inflict upon j-our patient a superfluous discomfort; DELIRIUM TREMENS. 251 and, I believe, in many cases, a downright injury. You will be told also of digitalis, as a specific remedy for the disease ; or you may read of it : but do not be led away from the standard remedies which reason recommends, and large experience has sanctioned. Knowing what we do of the power of opium generally, and of its efficacy in this complaint in particular, I should consider myself guilty of a criminal trifling with human life if I made experiments with digitalis, upon the loose reports of some one or two persons, of whose credit or information I knew nothing ; and whose dicta had been transferred perhaps from some foreign journal to fill a vacant corner in one of our own. Of the combination of opium and antimony, which has been much praised by good and competent judges, I am unable to tell you any thing from my own experience. In hospital practice it sometimes becomes necessary to confine the patient to his bed by straps, or to muffle his limbs in a strait waist-coat : but this is a most unfor- tunate necessity. Physical coercion, whether manual or mechanical, should never be resorted to in delirium tremens, when by any means it can be avoided. The angry feeling and mental fret which it produces, and the exhausting bodily struggles to escape or resist the thraldom, are always highly injurious and full of danger to the patient. A couple of strong and good-tempered attendants will not have much diffi- culty in persuading and managing the sick man, who is seldom either boisterous or obstinate : and if he be intractable by soft words, he will yield more patiently to their gentle restraint than to the force of manacles ; while the appearance of coercion need not be continued a moment after his acquiescence. I have drawn the line between encephalitis and delirium tremens with sufficient clearness, because I have taken well-marked forms of each. But I am sorry to add that there are mixed cases, which are very puzzling when they occur, and exceed- ingl}?^ difficult to treat; and which require opiates on the one hand, and moderate depletion on the other. When the indications are uncertain, or equivocal, we must carefully weigh the different symptoms, and we must cautiously try the remedies. The circumstances that most distinguish the one form of the disease from the other are to be found in the pulse ; which is hard and resisting in the earlier stages of in- flammation of the encephalon, soft and compressible in delirium tremens : in the tongue ; which is mostly parched and rough in the former, moist and creamy in the latter : in the skin ; which is hot and dry in the one case, covered with sweat in the other : in the countenance ; Avhich is flushed in inflammation, and mostly (though not always) pale in delirium tremens : in the tremors ; which are not common in the primary periods of inflammation of the brain : in the usual absence of headache in delirium tremens : and in the peculiar characters, which I need not recount, of the delirium in the two cases. If these symptoms contradict each other, as they sometimes will, you had better act on the worst supposition, and presume that there is inflammation, and employ antiphlogistic remedies : but you must not do so with a strong hand ; you must use them cautiously, and watch their effects, and guide thereby your subsequent treatment. Take a moderate quantity of blood from the arm : observe Avhether it has the huffy coat : and note the condition of the patient afterwards. In mixed or ambiguous cases it will be proper to combine calomel with the opium. You will sometimes find a state resembling delirium tremens left after the subsidence of acute inflammation of the parts within the cranium, and requiring the treatment of dehrium tremens. I do not know that there is much good to be expected from counter-irritation in this disease. But after the more decided symptoms were gone by, I have sometimes thought that the recovery has been accelerated by the application of a blistec to the nape of the neck. Inflammation of the brain, and delirium tremens, are distinct diseases. Hence, in the mixed cases, of which I just now spoke, we may expect after death to find, and we often do find, unquestionable traces of inflammatory action within the skull. But pure delirium tremens frequently leaves behind it no morbid appearance whatever m the brain or its membranes. In other cases there is serous liquid collected in tho mterstices of the pia mater, or in the cerebral ventricles ; and I have on several occasions seen the arachnoid thicker and less transparent than i^ naiuinl, and 252 DELIRIUM TREMENS. sprinkled over with little spots or streaks of a milk-white colour. Changes of this kind we believe to be owing to chronic inflammation of the membrane. But, even in these cases, I see no reason for thinking that the fatal disorder had any connection with the morbid state of the arachnoid. We meet continually with like appearances when there has been no delirium tremens ; and we have delirium tremens without any such appearances. The habitual abuse of ardent spirits leads to chronic inflam- mation in various parts and tissues of the body : in the blood-vessels, in the liver, in the kidneys, and in the arachnoid. We need not be surprised at finding that mem- brane thickened and partially opaque in the victims of delirium tremens ; since they are chiefly men who have run a long course of intemperance. I believe that disease to bear the same relation, and no other, to the chronic arachnitis in such persons, as to the chronic hepatitis to which they are equally subject. There is but one morbid condition which, since my attention was first directed to it, I have found constant in persons dead of delirium tremens, and that is, a remarkably soft, pale, and flabby state of the muscular tissue of the heart. The chemist may be more Hkely to detect altered conditions in the brain, in these cases, than the anatomist. Very lately Dr. Percy has obtained alcohol from the brain of a person who died from excessive drinking ; and from those of various ani- mals which had been killed by that poison. These facts are interesting, but they do not help us much in our attempts to explain the phenomena of the disorder. Cases, such as I related in the last lecture, where violent symptoms are calmed at once, and the patient is rescued in a few hours from great apparent peril, make a strong impression upon those who witness them ; and the practitioner gains amazing credit, and is spoken of to all their acquaintances as a wonderfully clever man. It is unfortunate that we are obliged to set off, against this advantage, a corresponding danger, when the disease ends ill, of being blamed without our deserving it. When these patients die (and they usually persist in their evil habits and die at last in one of the attacks of the disease), when they so die, they are apt to die much in the same way as patients who are poisoned by opium ; and if their friends are aware that we have been giving large and repeated doses of that drug, they sometimes have the charity to lay the death at our door: and you ought to be prepared for this ; and I will conclude what I have to say upon the subject of delirium tremens by relating a case, in which I have no doubt that I suffered (though quite unjustly) under that kind of imputation. Several years ago I was asked, one morning, by a general practitioner at the west end of the town, to see a patient with him : of whom he gave me this account. The man was about forty years old. He had been attacked some daj's before with sore throat, common cynanche tonsillaris. The tonsils and fauces were so much swelled that his deglutition was greatly impeded, and for four or five days he had not been able to swallow^ any thing. The night before I saw him he had become dehrious, and then had been largely bled, and he was worse in the morning. His bowels had also been very much purged. I found him propped up in his bed, whh a coronet of leeches round his head. He was pale ; there was no headache, nor affection of his breathing; his pulse was not very frequent, and it was quite soft and compressible. He was sweating profusely. He answered the few questions I put to him readily and pertinently, and then went talking on in a rambling way about his business. He was a hackney-man or stable- keeper, in a large way. He said (I remember) that the boys were all ready to start, that there were two pair of horses going down the road, and that he must go and see after them ; and much more on the same subject. His mind was busy about the execution of imaginary orders. He had not slept at all for some nights. Upon my inquiring into his previous condition, his wife told me that without any turn lor dissipation he had for some time been an habitual hard drinker; that he had !«equent dealings with the coachmen to the various families which he furnished with horses ; and that he was obliged to drink something with each of them ; so that every aav he had many glasses of spirits, and a good deal of porter. She told me, also th::t his mind had been anxious and uneasy; that the business was a large and DELIRILM TREMENS 253 narassing one ; that he had embarked a considerable sum of money in it ; and that it had not turned out so prosperously as he had expected. Putting all these things together, there could be no doubt, either as to the charac- ter of the complaint, or as to the treatment proper to be adopted. Here was a man who had been living a life of continued mental and physical excitement. Suddenly the stimulus to which he had been accustomed, was taken away ; he could not swal- low even such nourishment as his case required or admitted : then came on delirium — a symptom not belonging to the disease in his throat — and protracted watchful- ness. He is largely bled, and profusely purged, and he gets worse instead of better under these remedies. At the same time his skin is moist and perspiring, and there is no hardness in his pulse. I recommended that the leeches' should be removed from his head; that he should take immediately (for he could swallow now) two grains of opium, and afterwards twenty drops of laudanum every two or three hours till he fell asleep. Somewhat unluckily, his wife's brother — a very young man — was the apprentice or assistant of a surgeon in the neighbourhood of town, and he came in to see his relative. After hearing what I had said, he went home, and probably consulted his books, and then came back again with doubts whether the complaint really was delirium tremens after all. Whether in consequence of these doubts I cannot tell, but for some reason or other only one or two doses of the medicine were taken. I Jiad offered to see the patient again in the evening, but his friends said they would send for me if he did not get better. They did not send. The patient did not sleep. At night, therefore, at ten o'clock, three grains of opium were administered. The result of this was, that he passed a quiet but a sleepless night. Perhaps (but I can- not be sure of that) if the opium had been persisted with, the case might have termi- nated otherwise. About eight o'clock the next morning I was summoned to him in a great hurry ; when I got there he was dying, perfectly comatose, breathing sterto- rously, with blue lips and contracted pupils. He had appeared so much better at seven, that he was, for the first time, left alone for a quarter of an hour ; and when they went back to him, he was changed in the manner I have described. The general practitioner with whom I had first seen the patient — a very sensible man — was much concerned at this issue of the case, and observed to me that doubt- less our patient had been poisoned by the three grains of opium. I was able, how- ever, to relieve his mind from this notion : and I have mentioned the case chiefly for the sake of guarding you against similar misgivings, under similar circumstances. The manner of dying was just such as opium will produce; but, then, death by coma is also frequently the termination of delirium tremens. Effusion at length is apt to take place into the ventricles, or into the meshes of the pia mater, and stupor comes on, and the patient sinks. But in this instance I was certain that his death had nothing to do with the opium he had taken, for this reason : that so long a space of time had elapsed — nine hours — between his taking the opium and the coming on of the comatose symptoms. Dr. Christison, in his elaborate and valuable work on Toxicology, states it as the result of extensive inquiry into this subject, that when opium has been swallowed in a poisonous dose, it almost always begins to act as a poison within an hour; that very rarely indeed has its specific operation been post- poned much beyond the hour, except, occasionally, when the person taking it was intoxicated at the time. In one remarkable instance a drunken man took two ounces of laudanum, and no material stupor followed for five hours. I guess that I incurred the reproach of recommending a fatal plan of treatment in the particular case I have now related ; but I am quite satisfied that the opium was innocent of the patient's death, and I even think that his chance might have been much mended if the opi- ate, m smaller doses perhaps, had been steadily continued. We may be content to bear occasionally, these unfounded imputations when we consider the other side of the account, and call to mind the far greater number of instances in which spontaneous recoveries are credited to us as cures ; and the Doc- tor, like Belinda's Betty, is "praised for labours not his own." [The account given by the author, of the character, phenomena, causes, and treatme?nt of delirium tremens, is, upon the whole, so very judicious, that it would scarcely appear to w 254 DISEASES OF THE BRAIN. demand any other comment, than one of general approval. But as there exists a very decided difference of opinion among American practioners in regard to the proper management ot the disease, a few words upon this point may not be improper. Four different plans of treatment have been recommended, and the results of their exten- sive employment for a series of years, have been adduced, by their respective advocates, in evidence of the superior efBcacy of each. One practioner cures all or nearly all his cases by repeated emetics, another, by the free exhibition of alcoholic drinks, and a third, by opiates n free doses, continued at short intervals, until sleep is procured — while a fourth considers diat neither excitants proper nor opiates are necessary, but simply a state of tranquillity in a quiet and darkened chamber — with perhaps an emetic to unload tlie stomach in the com- mencement of the attack, and some gentle cathartic to keej? the bowels open — and when the stomach will retain it, a light, nutritious, and easily digested diet. The opiate practice is the one, in favour of the superior efficacy of which we have the most imposing weight of evidence — and it is unquestionably the one that will, in the majo- rity of cases, when judiciouslyand cautiously managed, the most promptly and effectually remove /he symptoms of the disease. That the opiate practice has been abused, we are perfectly aware. Under the supposition that opiimi to any extent that may be requisite to induce speedy sleep can be administered in delirium tremens with perfect safety, we have cause to fear that a state of coma has in more than one instance been induced from which the patient has never awoke. We have never been in the habit of administering large doses of opium, and have usually combined each dose with an equal quantity of camphor, and about half a grain of ipecacuanha. In young, robust, and plethoric subjects, we believe that the application of cups to the temples and nape of the neck, or even a moderate bleeding from the arm, is an important measure in the commencement of the attack, which should not be lost sight of. That there are many cases of delirium tremens in which a perfect recovery maybe effected without the administration of opium or of any stimulant is very certain — but our experience has taught us, that when the disease occurs in confirmed inebriates, with a broken down constitution, and in whom there is almost complete destruction of the proper functions of the digestive organs, almost the only means by which it can be certainly and promptly arrested is opium administered in moderate doses at short intervals. The treatment of delirium tremens by alcoholic drinks, while we can have no doubt of its very general efficacy, — is attended with an evil of too serious a character, to permit us to give to it, under any circumstances, our sanction. It cannot fail, we are persuaded, to con- firm tlie patient in his intemperate habits — and thus render him liable to a renewal of the disease after a short interval. That it is not the only successful treatment we are convinced from ample experience. In the practice of our preceptor as well as in our own, which has extended now beyond a qtiarter of a century, we have had sufficient opportunities for testing the value of the opiate practice in this disease, and have seldom been disappointed in its effects. We do not say that the patient will invariably recover under it. There are cases, in which, from the condition of the patient's system — the complication of the temulent deli- rium with serious disease of the brain or other important organs, death is inevitable under any plan of treatment : we believe, however, that in the general run of cases, the success of a properly conducted opiate treatment will equal that of any other ; while in the old, broken doM'n drunkard, it, or the stimulant practice, is the only one upon which any dependence can be placed. Of the emetic treatment, as recommended by Dr. Klapp, we cannot, it is true, speak from experience; in the very few cases in which we have'tried it, we were dis- appointed in its effects. On the subject of the proper treatment of delirium tiemens, the reader may consult with profit Dunglison"s Practice of Medicine, 2d edition, vol. ii., page 274, and the able note by Dr. Gerhard in Tweedie's Library, American Edition, vol. ii., page 237. — C] I should next wish to put you in possession of what has been ascertained in respect to partial and to chronic inflammation of the brain, as these are met with in adults ; for I must speak of the head affections of children separately. But I really do not know how to bring this part of the subject before you in a practical manner. If I were first to describe symptoms, and then to state what organic changes had been discovered after death preceded by them, I should have to tell you of different bymptoms with the same morbid conditions, and of the same symptoms with different morbid conditions, in various individuals. I believe the best method, upon the whole, will be to describe the several morbid appearances which the brain is found to pre- sent ; and then to mention the symptoms that have most commonly been observed to occur in association with such morbid conditions. I must premise, however, that the whole subject is full of uncertainty and apparent irregularity. Doubtless there w some constant and uniform connection of cause and effect between the ?Jterea RAMOLLI 3SEMENT. 255 physical states of the brain and the altered manifestation of its functions : but we nave not yet been successful in our search after those settled relations ; or we have but partial and imperfect ghmpses of them. One very remarkable condition of the brain has been several times mentioned m these lectures ; viz., softening — ramollissement. A great deal of attention has been paid to this condition of late years, both in France and in this country : and some points in its pathology have been fairly made out. I will bring them together as concisely as i can. In the first place, the softening varies greatly in degree, from the consistence which naturally belongs to the cerebral substance, to that of thin cream. In its minor degrees it may be easily overlooked ; and is more perceptible by the touch than by the eye. The cerebral matter is less coherent, but it is not yet discontinuous or broken down. It may be washed away, however, by letting a slender stream of water fall upon it ; and the softened parts are thus easily distin- guishable from those Avhich retain their natural consistence. In the next stage of softening we recognize the complaint at once, for the softened parts undergo a change of form by their own weight : parts that are prominent in the healthy state, as the optic thalami, corpora striata, and convolutions, sink down, as it were, and are more or less flattened. If you make a horizontal section through a part thus diseased, a portion of the softened brain adheres to the knife, and is removed by it, and a de- pression is left. In a still more advanced degree, the natural texture of the organ in the softened part is entirely destroyed and confused by the change, diffluent : 3^ou may pour the softened matter out. The colour of the softened portions varies also considerably. Sometimes they are unchanged in colour : sometimes they are quite white, and present a strong contrast with the tint of the neighbouring parts : sometimes they are marked with various shades of redness, from a rosy pink to an orange, or deep red, or even a mahogany brown. Often there are red spots mixed irregularly with the softened cerebral pulp, and giving it very much the appearance of a mixture of raspberries and cream. In other cases we find the softened mass of a pale yellow, or straw colour, infiltered, as it were, with purulent matter : and sometimes it is mixed with serous fluid. Softening of the brain is usually partial. It may occupy any part ; but it is said to be more frequently met with in the gray than in the white matter ; and more often in the gray matter of the convolutions than of the more central parts of the brain. You will find softening of the septum lucidum, and of the fornix, occurring very frequently in connection with an accumulation of serous fluid in the lateral ventricles. Now it is well established that softening of the brain is a common result of two very different morbid conditions. It is often caused by inflammation of the softened part : it is often caused, also, if I may say so, by its starvation ; by the diminished supply of arterial blood, in consequence of diseased blood-vessels. Can we distinguish these two forms of softening from each other by their phy- sical characters ? Why, sometimes, we can : and sometimes, it must be confessed, we cannot. The same parts that are most liable to have their consistence diminished through an inflammatory process, are also most liable to be softened from defect of nutrition. The most vascular parts of the brain, in short : the gray matter of the convolutions, and the gray matter of the thalami, and corpora striata. It is stated, however, that softening of the corpus callosum, septum lucidum, and fornix, from obliteration of the arteries, is extremely rare. If there be pus mixed with the softened brain, we know that there has been pre ceding inflammation. Again, if we find the arteries impervious, we conclude that the softening has not been inflammatory. Dr. Carswell states that the obliterated arteries may occupy the softened cerebral substance, and often be seen ramifying through it ; and that when this substance is removed by pouring water upon it, the solidified vessels retain their situation, and feel sometimes as hard as fine wires. But Xve come to the same conclusion if we find the larger vessels, the carotid or vertebral arteries, obstructed by ossification ; and a large portion of the brain unnaturally soft. We have no certain test of the nature of the softening in its being red. The red 256 DISEASES OF THE BRAIN. ness may be the result of inflammatory congestion ; but cerebral hemorrhage may occasion softening ; and, on the other hand, softening may give rise to cerebral hemorrhage. This may be said, however ; that the redness is seldom condderable when the softening proceeds from obliteration of the arteries. When the softening extends much beyond the redness, or the effused blood ; or when the redness occu- pies several small portions only of the softened pulp; we may presume that the blood was extravasated subsequently to, and in consequence of, the softening. On the other hand, when redness and vascularity can be traced into the brain, some way beyond the softened part, we may regard the softening as the consequence of inflammation. And we adopt the same belief, with still greater confidence, when around the softened and disorganized pulp we find the cerebral substance hardened, and of a uniform reddish colour. In attempting to make the diagnosis between these two forms of softening, we get some assistance by noticing the age of the patient. The ossification, which gives rise to the obliteration of the arteries, is almost pecuhar to the advanced periods of life ; whereas inflammatory softening may occur at any age ; in children, in adults, or in old persons. Some of the French pathologists have laid down this rule, as the result of their experience in regard to softening of the brain — that it is attended, during the earlier part of its progress, with a permanently contracted state of the flexor muscles of one or more of the limbs. " In some cases the contraction of these muscles amounts only to a slight degree of stiffness ; in others it reaches such an extent, that if the arm be the part affected, the hand is clenched, and remains pressed against the shoulder ; or, if the leg, the heel is carried up to the hip." Sometimes this tonic spasm is so strong that you cannot extend the limb ; and the attempt to do so gives the patient pain. After a certain time the rigidity is succeeded by complete relaxa- tion ; the contracted limb has become utterly palsied. I beheve that this is a valuable diagnostic symptom of softening, and especially of inflammatory softening — when it occurs. But it is often wanting. I vinsh I could tell you something more certain and constant in respect to the symptoms of this interesting change ; but the facts which I have myself observed, and which have been recorded by others, will not permit me to do so. Dr. Abercrombie even goes so far as to say, that judging from the cases that have fallen under his own notice, there is no foundation for the statement that ramollissement is distinguished by tonic contraction of one or more limbs : that the same thing is met with in connection with affections of the membranes, without any disease of the cerebral substance; and with the encysted abscess of the brain ; and that it is frequently observed in cases of typhus fever where there is much cerebral disturbance, but which terminate favourably. I will give you the general resuh of his experience in this matter as being untinctured with any wish to reduce his facts into conformity with a precon- ceived opinion, or hasty generalization. He states that " the cases which terminate by ramollissement seem in general to be characterized by convulsion, more or less extensive, followed by paralysis and coma ; the convulsion ceasing for some time before death, and being succeeded by the coma." But he saw one case in which "the convulsion continued with the utmost violence till the very time of death." In another instance "there was no convulsion at all, but a sudden attack of palsy, exactly resembling the ordinary attack of hemiplegia from other causes." In two cases he found " ramollissement of very limited extent, in connection with symptoms of long standing, both cases being at last rapidly fatal by a sudden attack of convul- sion." In other cases "there was extensive destruction of the cerebral substaiK.e, without either paralysis or convulsion, and even without coma." When you find the softened substance infiltered with purulent matter, you may call the case one of suppuration of the brain. But suppuration also occurs in another form ; viz.., in the form of abscess. The pus is contained in a regular well-defined cavUy, surrounded by cerebral matter in a healthy or in a hardened state. Now in suppt ja- tion occurring in the brain, there is the same puzzling diversity of symptoms as in C3«es of simple softening. Still, in the main, there seems an approach to the same order of srymptoms : convulsions in the earher period constituting the most prominent featvire RAMOLLISSEMENT. 257 of the disease ; paralysis in the latter. I will take one of Dr. Abercrombie's cases in illustration of the formation of encysted abscess in the brain. A girl, aged eleven, thin and delicate, after having complained for some days of headache, was seized on the 11th of January, with convulsions, which continued about half an hour: paralysis of the right arm followed the attack of convulsion. She was bled from the arm, and purged, and cold was applied to her head ; and she was much benefited by this treatment. On the 13lh the headache was much abated, and she had recovered a considerable degree of motion of the arm. On the 15th the headache increased again, and the arm became more paralytic, and she was agam bled: and on the 16th and 17th the power of moving the arm was greatly improved. On the 18th, after being affected with increase of headache, and some vomiting, she became convulsed, the convulsion being confined entirely to the head, and to the right arm ; the head was drawn towards the right side, with a rolling movement of the eyes ; the arm was in constant and violent motion. She was sensible, and com- plained of headache. Being bled to eight ounces, the convulsion ceased instantly, and the headache was relieved; but the right arm remained in a state of complete paralysis. Her pulse, during the five following days, fell from 100 to GO ; some headache continued; she had occasional vomiting: and the convulsive attacks returned several times ; they were entirely confined to the right arm, which after the 2-M, was left in a state of permanent palsy. Hitherto no other parts of the Dody had been affected by the convulsion ; but on the 24th it attacked the right thigh and leg, and left them powerless. The former remedies were repeated without any effect. The thigh and leg went through a course precisely similar to that described in regard to the arm, and on the 29th were permanently incapable of motion. She was now, therefore, paralytic of the whole right side ; she had no return of convulsion, was perfectly sensible, and made little complaint. Gradually she became dull and oppressed, and at length fell into a state of perfect coma, and died on the 14th of February, a litile more than a month after the commencement of her illness. In the upper part of the left hemisphere of the brain there were two distinctly defined abscesses, containing together from six to eight ounces of very foetid pus. They were lined by a firm white membrane ; and a thin septum of firm white matter separated them from each other. The one was in the anterior part of the hemi- sphere, very near the surface ; and the other immediately behind it. In the poste- rior part of the right hemisphere there was a small abscess containing about half an ounce of pus. There was no serous effiision in any part of the brain, and no other morbid appearance. In this very interesting case it is worth remarking how the convulsion preceded the paralysis, and how the palsy was more than once diminished by antiphlogistic measures. It is remarkable to conclude — it can hardly be called a conjecture — that in such cases of partial disease of the brain as I have hitherto mentioned, the occurrence of convulsion, or of rigidity, marks the inflammatory stage ; and the supervention of permanent paralysis denotes the period of softening or suppuration, of complete dis- organization, that is, of the texture of the brain in that part. Partial inflammation of the brain, especially when it is chronic, sometimes pro- duces a totally different change from any that have yet been described. Instead of becoming softer, or being converted into pus, the inflamed part is indurated ; cornea to resemble in consistence portions of brain that have been for a short time immersed in weak nitric acid. In this state it is often unusually vascular and injected. When the induration is greater in degree, the hardened part assumes the appearance of wax, or of boiled white of egg, or (as Andral says) of Gruyere cheese, ind contains but litile blood, but is, on the contrary, distinguished by its pearly whitt.iess. That these changes are the result of slow inflammatory action is the more probable, be- cause they are sometimes found to exist around an old apoplectic clot or cell ; the blood effused having acted as a cause of inflammation of the neighbouring part, just as any foreign substance might do. In the progress of cases in which partia' indu- ration is effected, convulsive movements are common, but paralysis does not appear to be so frequently present. The symptoms may go on for months, and often rerr.iu 17 w2 253 DISEASES OF THE BRAIN. ' and are ap'ain aggravated by paroxj'sms. These cases are the more interesting', because they ofler a greater probability of cure than those that are attended with an opposite condition of the cerebral mass. Besides these varieties of inflammation, and their consequences, the brain is often infested with fiimoKrs, which also jxive rise to a great diversity of symptoms. There are fibrous tumours which grow rather around the nervous matter than within it, and ai'e connected with the dura mater. They have been found at almost all parts of the surface of the brain ; at its base, at its sides, and towards its summit. Scro- fulous tubercles are also not uncommon : these are embedded in the nervous sub- stance, and assume a round form, for the reason I formerly mentioned, viz., because the tubercular matter that is separated from the blood is not cast into any particular mould (as it is when it is effused into the small bronchial tubes), but poured forth into the homogeneous pulp, which exerts an equal degree of pressure upon it on all sides. These scrofulous tubercles of the brain are infinitely more frequent in chil- dren than in adults ; and they are more commonly met with in the cerebral hemi- spheres than in any other part of the brain, occupying the cortical and medullary substance indifferently. They sometimes appear to originate in the pia mater. They differ from pulmonary tubercles in this respect, that they are seldom numerous in the same brain. Sometimes one only is found. They vary in magnitude from the size of a large pin's head to that of a hen's Q%g\ and they are sometimes even bigger than that. The substance of the brain immediately surrounding these tuber- cles may be unchanged, in which case it is probable that the tubercles themselves give rise to no particular symptoms, the cerebral matter of the spots they occupy having been gradually absorbed to make room for them ; but at length important alterations take place in the neighbouring texture ; congestions of blood, or soften- ing, or suppuration ; and then the ordinarjr consequences of these changes declare themselves outwardly. Cancerous tumours occur also in the substance of the brain. They usually occujiy a large portion of it before they extinguish life. Hydatids are sometimes found there. Now of the occurrence of these various local maladies of the brain it is necessary that you should be aware, for you may expect to meet with them frequently in prac- tice. And it is right also that you should be aware that they do not disclose their precise nature by any peculiar symptoms, or succession of symptoms. They all, sooner or later, disturb the functions of the organ in which they are situated ; and they may all disturb them exactly after the same fashion. We may judge, some- times, y>'0/;? other circumstances, that the disease is of this or of that character. If we see scrofulous or cancerous disease in other parts of the body, we infer that the symptorns which denote disease of the brain are caused by scrofulous or cancerous tumours there situated ; but from the symptoms themselves, we can only learn that there is some morbid condition of the brain. I attended, recently, with Dr. Latham, a youth, whose symptoms led us to believe that he had tubercular disease of the ])eritoneum ; a very formidable complaint, which I shall m.ore particular!}'' describe hereafter. We thought it probable, also, although there were no physical signs of pulmonary disease, that his lungs con- tained crude tubercles. After some time, he went down to the coast ; and was there attacked with a fit of general convulsions. Up to that period he had shown no sj^mptoms whatever indicative of organic disease Avithin the head. On being apprized of this seizure, we expressed in a letter to the physician then attending him, our opinion that it had resulted from the presence of scrofulous tumours in the patient's brain. The convulsions returned a k\v days afterwards with great violence, and he died. It was as we had conjectured. The peritoneum vv'as found studded with innumerable miliary tubercles : there were a few crude tubercles, of some size, nround the roots of the lungs ; and two large masses of the same sort in the brain. Here, you see, we were directed to a correct special diagnosis of the cerebral dis- ease, simpl}' by the evidence which had satisfied us that scrofulous tubercles existed in other parts of the body. [For a more full account of the present state of our kno'wledge in regard to tubercles of "'\c brain, see the Editor's Treatise on Diseases of Children, page 57'2. — C.J HYPERTROPHY. 259 In the case of specific tumours there is really nothing to be done by way of cure We must then treat the symptoms, and seek to alleviate them as they arise. When it appears hkely, or not unlikely, that the cerebral symptoms may be the result of cerebral inflammation, we must give the patient the chance of being benefited by some of the remedies of inflammation : we must treat the case in this instance upon the most favourable supposition. The class of remedies from which most may be hoped in equivocal cases, are local bleeding, counter-irritation, and especially the cautious and regulated employment of mercury. I have stated to you before, that I have known several obscure but threatening symptoms of brain disease clear entirely away, when the gums were made sore by mercury, and kept slightly tender for some little time. It is possible that we may sometimes do our patients harm by this mercurial treatment. We may, now and then, accelerate the arrival of death in persons whom nothing could save ; but we must not be deterred from giving them this chance of being rescued from a disorder which may be susceptible of cure, but which, if unchecked, will be inevitably fatal. LECTURE XXV. Hypertrophy of the Brain : Atrophy. Acute Hydrocephalus ; Premonitory Signs ; Different Modes of Attack ; Stages of the Disease ; Anatomical Cha- racters ; Causes. There is a very curious morbid condition of the brain, to which I shall advert before I take up the consideration of certain cerebral diseases as they occur in chil- dren. The condition of which I am about to speak I was totally ignorant of till I had been for some years in practice. In the spring of 1833 I admitted a young woman, 19 years old, into the Middlesex Hospital. Her countenance was sallow, and her lips pale. She complained of pain in her chest and limbs ; of great and increasing debility, and wasting ; and of nightly perspirations. She had some cough, and a frequent pulse ; and although no morbid sounds were audible in her lungs, I suspected that they might contain small or scattered tubercles. She had been in the hospital scarcely a week, when she had a violent fit of epilepsy ; and when she was somewhat recovered, she told us, for the first time, that she was sub- ject to such attacks. The convulsions recurred on the same day, and she became insensible, and remained so during the whole of the next day, and till the evening of the day after, when she died. During this period of insensibility she had many convulsive fits ; the pupils were dilated, the pulse 100, small and feeble. Leeches were applied to the temples, a blister to the neck, and afterwards to the shaven head, and other measures were used, but in vain. When the surface of the brain was exposed by the removal of the skull-cap, and of the dura mater, it was observed that the convolutions were remarkably flattened, so that the little furrows between them were nearly efl'aced ; and the surface of the arachnoid membrane was perfectly dry. These are not very unusual, though they are^ unnatural appearances. I had often seen such before : and I ventured to sa3r that we should find some cause of strong pressure in the central part of the brain ; efTusion of serum into the ventricles, or a large extravasation of blood. But to my great surprise, and much to the discredit of my prophecy, we found nothing of the kind. The ventricles were even smaller than natural, and contained scarcely any moisture. The skull-cap was afterwards examined, and the bone was found to be uncommonly thick, dense, and heavy ; and its inner surface, without being rough, was very irregular. I regret that, in tliis examination, the state of the blood-vesseis of the brain, and the consistence of the cerebral matter itself, were not particularly noticed. In the record made at the time by my clinical assistant, it is merely stated that the brain was otherwise healthy. There was no disease in the lungs. This dissection interested me much, for I had never seen nor heard of any thing 260 I DISEASES OF THE BRAIN. like it before. But upon looking into some modern authors, I discovered that the same phenomena had been noticed by two or three observers, who had very properly (as it seems to me) considered them as the result of hyi:)ertroj)hy of the brain. There is a very good memoir upon the snbject, by M. Dance, pubhshed in the fifth volume of Breschet's Repertoire (T Jlnatomie : and Andral gives an account of the disease in his Pathology. It appears that Morgagni had not overlooked it, for he speaks of instances in which the brain seemed too big for its bony enclosure. When, in these cases, the skull is sawn through, the upper loose portion of bone starts up, as if moved by a spring, and the edges of the bone remain widely apart. Laennec, also, in Corvisart's Journal, states that upon opening the bodies of persons whom he had thought affected ^vith hydrocephalus, he had been surprised at finding a very smali quantity only of fluid in the ventricles, while the convolutions on the surface of the brain were strangely flattened ; proving that the cerebral mass had undergone strong compression, which could only have arisen from its preternatural volume, and undue nutrition. Besides the characters I have mentioned, the hypertrophied and compressed brain is firmer and tougher than natural ; it contains but httle red blood ; and sections of it are seen to be unusually dry and pale. In several of the cases of hj-pertrophy of the brain recorded by authors, the pa- tients had suffered epileptic fits, or rather paroxysms of convulsion ; and in some of them the convulsions terminated in paralysis. Andral states that the intellectual faculties have been observed, in some instances, to become dull and obtuse. Many of the patients were subject to severe headaches. All these symptoms are common to various cerebral complaints. The diagnosis of this rare disorder can be no better than conjectural ; and its treatment we have still to seek. Andral remarks, what is very true, that hypertrophy of the brain, i. e., an undue and disproportionate development of that organ, may, and does happen, without giving rise to any morbid phenomena at all. But, in such instances, the brain-case is equally enlarged in capacity ; so that no pressure upon the cerebral mass results from its own preternatural growth. It is only when the brain increases faster than the bony sphere which contains it, that the hypertrophy becomes a disease. In my patient there was also, in one sense, hypertrophy of the skull ; the bone was consi- derably thicker, and more compact and heavy, than is usual ; but the capacity of the cavity had not undergone a proportional augmentation ; nay it might, for any thing I know, be diminished in consequence of the increased thickness of the bone ; the case may have been one of concentric hypertrophy of the bone, without any fault of the brain itself; but what makes this the less probable is, that in other cases, the skull has been found of the ordinary thickness and density ; but too small for its contents. It is of some importance for you to be aware that the brain, and its case, may bp extravagantly developed without there being any disease, or any symptoms of dif> ease. M. Scoutetten gives an instance of this which he observed in a child fiv3 years old. Its head was as large as that of a well-grown adult person. The skull was from a line and a half to two Hnes in thickness. The dura mater adhered firmly to the bone, and the cerebral mass exactly filled up the cranial cavity. The superior and posterior part of the brain was developed beyond measure, so that to reach the ventricles it was necessary to make an incision nearly three inches in depth. There was nothing unusual to be remarked in any of the cerebral functions of this child ; It was just like other children of the same age in respect of intellect. It died of acute inflammation of the bowels. The late Dr. Sweatman met with just such another child a few years ago : and I refer to his description of it the rather, because cases that occur near home are always more interesting, and satisfactory, than those which we merely read of in foreign authors. Dr. Sweatman had never read of any thing of the kind : but in August, 1834, a httle boy, two years old, was brought to him on account of the size of his head It had been gradually increasing from the age of six months, till it had become so large as by its weight to prevent the child from continuing long in the upright posture. The boy was active and lively, though thin. He never had any HYPERTROPHY. 261 fit or convulsion ; but occasionally seemed uneasy, and then would relieve himself by laying his head upon a chair. He had never squinted nor was he subject to drowsiness, or starlings during sleep ; and his pupils contracted naturally. His appetite was good, and all the animal functions were properly performed. Dr. Sweatman got Mr, Mayo to see the child with him : they both set it down as a case of hydrocephalus, but agreed in thinking that in the absence of symptoms it would be wrong to risk disturbing his digestive organs by active medicines. In the early part of 1835 the child died of inflammation of the chest, and Dr. Sweatman and Mr. Mayo examined the head. I here show you a cast of it. It measured from ear to ear, over the vertex, twelve inches ; from the superciliary ridges to the occipital, thirteen inches ; and in circumference twenty-one inches. The anterior fontanelle, which was quite flat, measured across its opposite angles two inches and a quarter by one and a half; the posterior fontanelle was completely closed, as was the frontal suture. There was no absorption of bone at any part ; on the contrary it was becoming thicker. The dura mater adhered with great firmness to the skull ; and a layer of false membrane, as big as a crown-piece, was found upon its upper and. anterior part. Beneath the arachnoid at that part there was slight jelly-like effusion. In all other respects the organ was sound. The convolutions were perfectly distinct, and retained their proper rounded shape. All the ventricles were found empty, and not dilated. The surfaces, however, of the medullary matter, exposed by differ- ent sections, presented very unusual vascularity. The lesson we learn from cases of this kind is, that we are not to regard every child that has a very large head as a hydrocephalic child ; and especially that we are not to inflict upon such a child a course of mercury, or other active remedies, unless some morbid symptoms appear. The nimia cura medici may in these, as in many other cases, destroy health ; produce disease where none existed before. [The subject of Hypertrophy of the Brain would appear to demand a more extended notice than has been given in the text. There is reason to believe that the disease is of more fre- quent occurrence than is generally suspected, and that to it are to be ascribed n any cases of convulsions, epileptic attacks, inflammation and softening of the brain, and even of idiocy, in which the connection has heretofore been entirely overlooked ; we know that hypertrophy of the brain has, in more than one instance, been mistaken for chronic hydrocephalus, and that even the operation of tapping the brain has under such circumstances been proposed, nay, probably performed. Hypertrophy of the brain, or at least a condition of that organ predisposing it to undue and more or less rapid augmentation in bulk, is often congenital. Thus children are not unfrequently born with heads of dimensions far exceeding the usual standard — ■while, in other instances, the head soon after birth is found to augment rapidly in bulk, disproportion- ately to the growth of the rest of the body, and within a short period to attain an enormous magnitude. When the cranium is developed in the same ratio with the brain, at first no morbid symp- toms arc produced, or only slight ones. In almost every case, however, we have observed more or less apathy, dullness, and drowsiness, to accompany these cases of undue develop- ment of the brain, from a very early period. After, however, the disease has existed for some time, and particularly when there is a disproportion between the morbid development of the brain, and the expansion of tlie cranium, the patient becomes affected with apathy to external objects, a disposition to som- nolency — great irritability of temper, giddiness, habitual headache, attended with sevm-e exacerbations at irregular intervals, and inordinate appetite. The intellect becomes more and more obtuse, verging occasionally upon complete idiocy. There is, usually, a debility of the muscles of the extremities, particularly of the inferior, which constantly increases, until, finally, complete paralysis results. The bowels are usually torpid, and the pulse remarkably slow. In many cases, the muscles are affected with convulsive twitchings, at first slight, and occurring at long irre- gular intervals, but gradually becoming more severe and frequent, until regular convul- sive paroxysms ensue. The convulsions, not unfrequently, assume all tlie characteristics of epilepsy. In some cases there suddenly ensues a considerable reduction, and, occasionally, an entire abolition of sensibility. In other instances, the patient is suddenly attacked with acute deli- rium, quickly followed by complete coma and death. J^'aniawas observed byAndral in one case. In the majority of cases that have fallen under our notice, the patients have been mc lined to fat. 262 DISEASES OF IHE BRAIN. The disease is divided by Andral into two stages: — 1st. The chronic, marked Ly few symptoms, or simply by slight obtuseness of intellect — more or less headache, either perma- nent or intermittent — vertigo, apathy, drowsiness, broken at irregular intervals by convulsive paroxysms. All of the foregoing symptoms may occur, simultaneously or successively, in the same case, or only one or a part of them may be present. 2d. The acute stage, marked by sudden attacks of violent convulsions, idiocy, epileptic paroxysms, deep coma, or the ordinary symptoms of acute hydrocephalus. The prognosis in cases of hypertrophy of the brain is not necessarily unfavourable. As Dr. Lees correctly remarks, the affection of the brain is rather an error of development than an actual disease, and the excess of nutrition will often cease, and the brain may even leturn to its normal state. Many patients who have laboured under cerebral hypertrophy have entirely recovered, others will arrive at puberty, or even a more advanced age, with but little suffer- ing or inconvenience, while others again die at an early age from the accidental occurrence of hyperEemia of the brain, convulsions, or meningeal inflammation. In some instances death occurs suddenly during an attack of convulsions — or, the patient becoming more and more comatose, death finally ensues without a struggle. The chief danger arises from the very great susceptibility of the hypertrophied brain to disease, especially upon the occurrence of any accidental affection of one of the other organs, or of either of the affections incident to childhood. Upon dissection, the brain is found to be enlarged in size, the convolutions being flattened — ■ the blood-vessels containing a diminished amount of blood, the cortical substance exhibiting iu consequence a morbid paleness, with but little or no serum within the ventricles or be- neath the membranes. The substance of the brain is in many cases increased in density. Sometimes, according to Sims, the hyjiertrophy is confined to one lobe, or to the corpora striata or thalami; in all cases, the hypertrophy is chiefly confined to the cerebrum, the cerebellum being seldom much, if at all atfected. Instances occasionally occur in which the vessels of the brain are injected with blood ; others where a slight amount of reddish serum is found at the base of the brain, — and others again with a clot of blood within the substance of the brain, and rupture of the fibres of its medullary portion ; in all these cases, it will be found, upon an inquiry into their history, that death was preceded by symptoms of cerebral disease, in addition to those which properly belong to simple hypertrophy of the brain. It is important to distinguish the hypertrophied state of the brain from chronic hydroce- phalus, to which, particularly in its advanced stages, its phenoiuena bear a strong resem- blance, so much so as to have caused the two to be not unfrequently confounded. Drs. Lees and Muncmeyer point to a particular and very striking projection of the parietal protube- rances, in hypertrophy of the brain, as a valuable guide in our diagnosis, while Dr. Henms Green suggests the difference in the sensation communicated to the fingers when pressed upon the fontanelles in children aflected with the two diseases, as a diagnostic sign. The sensation being that of a tense membrane filled with water in cases of hydrocejohalus, and of a firm solid substance in cases of hypertrophy. Dr. Mauthner, in his work on Diseases of the Brain (Viciuia, 1S44), lays down the following diagnosis between these two affections : — In hyper- trophy, it is the posterior part of the skull which is first observed to become abnormally prominent, the projection of the forehead occurring subsequently; whereas, in chronic hydro- cephalus, the enlargement of the forehead is one of its first results. The latter affection is usually associated with a general emaciated condition of the body; the former with a leuco- phlegmatic habit, and an increased deposition of fat. The constitutional symptoms likewise differ in the two aflections — restlessness, convulsions, and sopor, mark the early stages of chronic hydrocephalus, while spasmodic aflections of the respiratory organs are among the earliest indications of hypertrophy of the brain, but seldom occur until the advanced stage of hydrocephalus. (See Condie on Diseases of Children, 2d edition.) — C] Having told you what I know of hypertrophy of the brain, it is proper that I should say a word or two respecting the opposite condition ; of atrophy of the cere- bral mass. There are two forms of this affection : one is congenital, and results from imperfect development, or an arrest of development, of the brain in its foetal state. In the other the change appears to take place in consequence of disease, either in the membranes of the brain, or perhaps in its arteries ; though the effect of disease in '.he arteries is usually softening, which is a species of atrophy. But in the atrophy to which I am now alluding, the volume of the atrophied part is diminished, not its consistence. And the diminution of size may extend only to a few convolutions : or it may be most manifest in the interior of the organ ; in the optic thalami and corpcra .striata for example. There is still another alteration to which some have applied the term atrophy, though improperly, I think : I allude to those cases, which I shall speak of more particularly soon, in which the form and disposition of the cerebral substance is altered, the convolutions being unfolded, and the nervous matter spread i ACUTE HYDROCEPHALUS. 263 ■9Ut by a large collection of fluid in the interior cavities of the brain, constituting the disease called chronic /lydroccphahis. I hav^e not much to say upon what may be styled atrophy proper of the brain : that it will give rise to symptoms we cannot doubt, but that it shows itself by any pecuhar or characteristic symptoms is what I have not discovered. I shall content myself, on this subject, with showing you Cruveilhier's representa- tion of a strongly pronounced example of atrophy of the entire cerebrum on one side. The drawing from which this engraving was made, was painted from the body of a patient who died in the Hotel-Dieu, dropsical, in consequence of disease of the heart. He was forty-two years old. When you look at the engraving you will perceive that the left side of the cerebrum is diminutive compared with the right. It filled up, however, a larger space than it appears to do in the plate ; for the lateral ventricle on that side was distended by a quantity of serous fluid, which ran out when the ventricle was punctured ; and then the surface of that side of the brain sank down, and collapsed. Still the convolutions on that side, and all the dimensions, are remarkably less than on the other. The anterior lobe projected half an inch further on the right than on the left side. The frontal bone, you will observe, is much thicker; twice as thick on the atrophied as on the natural side; and the frontal sinus very wide and open. The internal parts of the brain are all diminished in proportion. There was a large quantity of serous liquid filling and distending the subarachnoid areolar tissue. The nervous matter was whiter and harder on the atrophied side. One very curious thing is, that the left lobe of the cerebe/liwi was the bigger of the two; but there was no such marked difference between them as between the two sides of the cerebrum. Now, the patient, in whom this singular disproportion between the two sides of his brain was met with, had been incompletely hemiplegic, as long as he could recollect, on the right side ; and the imperfectly palsied limbs were shrunk and withered, and the fingers of the hand contracted. Yet he had managed to walk about with the help of a stick ; and there was nothing remarkable, one way or the other, in the state of his intellectual faculties. The same condition has been seen on both sides of the brain : the organ itself existing in miniature, as it were, and lying at the lower part of the vaulted cavity of the cranium : the intermediate space being filled up with water. Tn long-standing cases of this description you hiust not suppose that the nervous matter has been compressed into a smaller compass by the effused fluid ; but that the fluid has been poured out to fill that part of the skull which is empty of brain, and which must be filled with something. This condition of the cerebrum is accompanied by idiotcy. I proceed in the next place to the consideration of that disease to which the name of acufe hydrocephalus has been given. By that term 1 desire to signify wjfumma- tion of the brain, as it frequently occurs in children, and especially in scrofulous children. The inflammatory character of the disorder, though not always very clearly expressed in its symptoms, is sufficiently attested, in many of the fatal cases, by the changes discovered within the cranium. I made some observations, in the last lecture, respecting the nomenclature of diseases, and said something in defence of the name delirium tremens. Now it must be confessed that the complaint we are about to consider was unfortunately named, when it was called hydrocephalus. I repeat that it matters not at all how we deno- minate a disease, provided that its title does not involve any erroneous notion of its nature. I think hydrocephalus a bad name, because it reminds us of one circumstance only of the malady, viz., the serous effusion, which so far from being the caicse, or the essence, is only a frequent effect of the disease ; nay, it is no uncommon effect of other morbid conditions also, besides inflammation. But hydrocephalus, or water in the head, is an appellation so established, both among ourselves and with the public, that I cannot venture to propose any change. After what I have already stated in respect to inflammation of the brain in adults, you will be prepared to hear that acute hydrocephalus (remember, I restrict that term to the same inflammatory malady as it occurs in strumous children) — I say vow 264 DISEASES OF THE BRAIN. will not be surprised to learn that acute hydrocephalus furnished a great variety of symptoms ; and many variations in the mode of their coming on, and in their combi- nation, and succession. It is of the greatest importance to recognize acute hydrocephalus in its earliest stages ; and even to look out for indications of its approach. I shall, therefore, de- scribe those changes in the state of the young patient, which have been found to be, in many cases, premonitory that the disease was impending. But such symptoms Hre by no means always followed by acute hydrocephalus ; nor is acute hydroce- phalus always preceded by such symptoms. Still, when they do occur, they should put us upon our guard. The precursory symptoms to which I allude consist chiefly in a morbid state of the nutritive functions. The child loses his appetite ; or his appetite becomes capri- cious : he sometimes appears to dislike his food, and sometimes devours it voraciously: his tongue is foul, his breath offensive, his belly enlarges, and sometimes is tender ; his bowels are torpid, and the evacuations from them unnatural ; the stools are pale and contain but little bile ; or they are dark, with vitiated bile, foetid, sour-smelhnaf, shni}', or scybalous ; and the child loses his former healthy aspect, becomes paler, and thinner. Even already there are obscurer indications of derangement in the cerebral functions ; the child is heavy, languid, and dejected ; his customary spirit and activity are gone ; he gets fretful and irritable, and is manifestly uneasy ; and sometimes he shows a little unsteadiness and tottering in his gait. In very young children, when the disorder is at hand or incipient, an unnatural wakefulness is often observable. A frequent sudden cry or scream, a clenching of the little fists, and a turning in of the thumb towards the palm of the hand, givt warning also of the approaching malady. Now when this sort of alteration is observed in a child who has anj'- hereditary title to scrofula, or bears the marks of the strumous diathesis, or is even a precocious and particularly clever child, and still more if he present any other indications of strumous disease, there will be much reason to apprehend that mischief is brewing within his head. I advert to these tokens of scrolula, because the inflammation, in a majority of cases, if not in all, is of a scrofulous character. But there is this peculiarity in it, which distinguishes it from scrofulous inflammation in most other parts, viz., that it occurs in an organ of a very delicate structure, and one which is essential to life, its progress is more rapid, and it is more necessary to treat the disease promptly. It has been made a question whether the derangement of the digestive organs that has just been described is or is not the cause of the affection of the brain ; or whether both the abdominal and cerebral disorder are not common and concurrent effects of the same cause. It is said that the stomach and bowels are more in the way of being acted upon by injurious influences than the brain, and that, therefore, the complaint may be supposed often to originate in their derangement ; and great good, it is alleged, is done, the disease of the brain is often prevented, by remedying the disordered condition of the stomach and bowels. On the other hand, it may be stated that a similar derangement of the digestive organs often comes on and lasts long in children, without leading to hydrocephalus ; and hydrocephalus often attacks a child in whom no such symptoms of abdominal disease have appeared. We can never be certain, therefore, that hydrocephalus has been prevented, in any given case, by remedies addressed to the digestive organs. I cannot think the question is one of much prac- tical imi^ortance. Whether the disturbances of the nutritive functions cause the brain disease, or merely indicate it, they are equally valuable in directing our atten- tion to ihe head. In these little patients any source of irritation seems to act as an exciting cause : aurgical operations, which are sometimes necessary at that tender age — falls or in- juries of any kind — painful dentition. There arc, at least, three several ways in which tliis disease may make its attacks ; and with these it is proper that you sfiould be acquainted. In the first place, it may come on gradually ; after such symptoms as have already bf!en s[)ouen of as being premonitory. Probably this is the way in which it most ACUTE HYDROCEPHALUS. 265 frequently commences. After a period, of uncertain duration, in which the child has complained of occasional pains in the belly and head, and signs of derangement of the stomach and bowels have been present, the pain in the head begins to be more severe and to recur more frequently. It is not mere headache, but generally a sharp shooting pain, recurring at intervals ; sometimes it affects one side of the head more than the other ; the little patients wake and shriek out with the pain, and this in children is a very characteristic symptom. As coma comes on, this shrieking gives place to an habitual moaning, which is scarcely less characteristic. Very often ic the beginning of the disease there are pain and stiffness at the back of the neck ; sometimes there is much pain of the limbs in the early periods, and in some chil- dren extreme tenderness of the scalp, so that they cannot endure to have the head shaved. The pain of the head becomes complicated with vomiting, and both these symptoms are aggravated by motion. Very often nausea is excited by the erect pos- ture, and the patient begs to lie down. The child sighs frequently, and looks grave or sad ; his eyes are pained by a strong light, so that he knits his brows. The pulse becomes rapid, and the disturbance and irregularity in the abdominal functions increase. This stage of the complaint may last tea days or a fortnight, the child becoming daily more weak, and more peevish, and looking more and more ill. In the second form of attack there are no premonitory symptoms ; or they occur for a very short while only before the disease sets in suddenly and violently, with acute pain in the head and high fever ; or with convulsion : the face is flushed, the eyes are brilliant ; there is intolerance of light and of sound, and there are pain and tenderness of the abdomen. In short, the disease, when it commences in this man- ner, is very like an attack of continued fever. You may find these varieties described in Dr. Cheyne's excellent treatise on this disorder. "We are led to suspect," he says, " some deeply-seated evil from the frantic screams and complaints of the head and belly, alternating with stupor, or rather lowness, and unwilhngness to be roused ; and we are struck with the great irritability of the stomach, which exists in a degree beyond what we generally find it in the fevers of this country ; retching and vomit- ing being brought on by a change of posture, and certainly by every attempt to sit up in bed ; and the disordered state of the bowels, which attends this irritability of the stomach, is also remarkable : and when at any time the child has a little respite from the violence of these symptoms, we find our suspicions confirmed by his looks ; for when the features do not express pain or terror, there is not unfrequently a vacancy of look, the eyes being set, with an expression of dejection which is peculiar to cer- tain diseases of the brain." The mode of attack which has now been described, although the most regular in its progress, is not so common as the first, nor as the third, which I have yet to mention. The third way in which the disease makes its advances is very insidious : the head symptoms supervene upon the subsidence of some other malady : presently after the disappearance of an eruption from the scalp ; during the dechne of scarlet fever, small-pox, hooping-cough, or any inflammatory or febrile complaint; and even after painful dentition. In these cases the early symptoms are often but slightly marked, or do not take place at all ; the sudden occurrence of convulsions or paralysis affording the first evidence that the brain is implicated. This is the most dangerous form of hydrocephalus. It has received the expressive title of water-stroke. In whatever way the disease makes its invasion, it is apt to be attended with many and variable symptoms; and different observers, with a view of facilitating their description of the disease, and of making it more intelligible and more easily remem- bered, have divided the symptoms into groups, and considered each group as charac- teristic of a particular stage of the malady. But they have not all done this in the same way. It may be of use, however, to inform you of the different classifications which have thus been proposed. Dr. Whytt, who was a most the first person in this country who wrote upon this disease (I believe Dr. Paisley of Glasgow was the first : you may see his paper in the third volume of the Edinburgh Medical Es- says), Dr. Whytt, I say, whose description is an extremely good one, took the pulse — which undergoes very remarkable variations in the course of the disease — as th» ground of his division. He makes three stages of it therefore ; the first, in which ^i 26G DISEASES OF THE BRAIN. the pulse is frequent; the second, in which it is slow and irregular ; and the thiio, in which it again becomes frequent and feeble. These successive fluctuations in the pulse are to be noticed in very many cases. Dr. Golis, again, an eminent Ger- man writer on hydrocephalus, whose little work was translated by the late Dr. Gooch, as being the best book on the subject that he was acquainted with, makes four stages, according to what he believes to be the condition of the brain in each. First, he has the period oi tiirgescence, which corresponds with that period in which the premonitory symptoms occur; secondly, the TpexioA oi infiaimnation ; thirdly, the period of ejfusion ; fourthly, the period of palsy. The two last would appear to be almost identically the same. Dr. Cheyne makes three stages ; which he finds marked, not like Dr. Whytt, by the state of the circulation, but by the state of the nervous system. Thus he calls the first the period of increased sensibilily, when every stimulus produces an impression more than proportioned to its common effects. In the second stage, that of diminished sensibility, the child is not easily roused, his pupil is dilated, and his pulse slow ; he is lethargic, with obstinately costive bowels. The third stage with him is that of palsy and convulsions, in which there is squint- ing, rolling of the head, stupor, convulsions, with a rapid thready pulse. Cases often occur, however, that baffle all these attempts at classification. Con- vulsions, instead of being among the last, are not seldom among the very Jirst symp- toms. The pulse is sometimes remarkably slow at the outset ; sometimes frequent through the whole disease ; and sometimes petfectly natural. I do not make these statements to magnify the difficulty of distinguishing the dis- ease ; for the diagnosis is really not so difficult as it has sometimes been represented ; but to show you that you must not trust to any succession of symptoms, still les^s to any one symptom, as being pathognomonic. The symptoms that occur during the first stage are very variable, as you may suppose from what I have said of the different modes in which the disease is apt to set in. Those that are most constant are, pain of the head, severe shooting pain, I say, it seems to be, for the child puts its hand there, and cries out frequently, " Oh ! my head ;" restlessness ; inability to sit up ; very disturbed sleep, with grinding of the teeth, and from this sleep the child often starts apparently in terror, and with a scream. The head is hot externally ; the little patient is annoyed by light and by noise ; the pupils are contracted most commonly during this stage ; the child is un- wilHng to be disturbed, and, therefore, does not reply readily to questions; but the replies, when made, are correct and rational. This stage is marked, also, by vomit- ing, a total loss of appetite, a white tongue, offensive breath, costive bowels, unna- tural stools, green often, or black, like tar, scanty and high-coloured urine. Dr. Golis says that the abdomen, which has been tumid and tender, perhaps, sinks down and becomes flat, without any increased excretion by stool ; and that this is a very characteristic symptom. The pulse in this stage is frequent and sharp. In short, the symptoms are such (in general) as indicate very plainly that inflannnatory action is going on within the head. Now the symptoms that characterize this first stage of the complaint sometimes rapidly pass into those which belong to the second. They may not be present for more than a few hours; or they may last a day or two, or several days ; it is very seldom, I believe, that they continue longer than a week. The period answers, in the general character of the symptoms, to the period of excitement in encephalitis, w^hich I repeat is very much the same disease, modified by its occurrence in the adult and otherwise healthy subject. So, also, the second stage of acuie hydrocephalus corresponds, in its general features, with the period of collapse in encephalitis. The pulse becomes irregular, extremely variable and fluctuating, and often slow : it is easily accelerated, however, by the smallest exertion — by taking the child out of bed, or even raising him into a sitting posture. With this slowness of the pulse come on a diminution of sensibility, and general heaviness and stupor; the pupils dilate, the light is no longer trouble- some, the vision is imperfect, often it is doubtful whether the child sees at all. If the eye be closely examined and watched, the degree of light remaining the same, the size of the pupil will frequently be seen to fluctuate or oscillate, till at last it is wide open and immovable. While this goes on squinting takes place, and double ACUTE HYDROCEPHALUS. 267 Vision when the child can yet see any thing. One or both eyes are turned in, or more rarely outwards. Noises do not now disturb or irritate the child — who hes on his back, with the eyes half closed, in a state of drowsiness or stupor, which is oc- casionally interrupted by some cry or exclamation expressive of pain. Convulsions frequently occur, but not uniformly; slight and partial spasmodic twitchings; or general and long-continued convulsions ; paralysis ; sometimes hemiplegia. The urine and stools are passed unconsciously. Sometimes the shild, with feeble and tremulous hands, is incessantly picking his lips, or boring his fingers into his ears or nostrils. This stage may last a week or two. And what is remarkable, it is often attended with remissions, sometimes sudden and sometimes gradual — deceitful appearances of amendment, and even of convalescence. The child regains the use of its senses ; recognizes those about him again ; appears to its anxious parents to be recovering ; but in a day or two it relapses into a state of deeper coma than before. And these fallacious symptoms of improvement may occur more than once. The third stage does not differ materially in the character of the symptoms that accompany it, from the second, except that the pulse again becomes frequent, nay, uncommonly rapid : beating sometimes 200 strokes in the minute, so that you can scarcely count it. Dr. Whytt, in one instance, reckoned more than 210 pulsations. The child rolls its head perpetually from side to side ; moans continually ; waves its hands in the air, or one hand, the other frequently being palsied ; sometimes there is paralysis of one side, and conv^ulsive twitchings of the other. The circulation is very unequal ; one part of the body will be found hot and dry, and another covered with a cold sweat : the cheeks are alternately pale and flushed ; the child is raving, or insensible ; the rapid pulse gets more and more weak ; and at length the patient expires. In many instances death takes place in the midst of a strong convulsion. This last period is of very uncertain duration ; it may be over in a few hours, or it may last a fortnight. For my own part, I conceive that for all practical purposes it would be quite enough to make two stages only of this disease. In the first the symptoms are those of inflammation of the parts within the cranium, or of some of those parts ; in the second, we have the symptoms that result from the consequences and products of the inflammation, from softening, and from the effusion of serum. And frequently these sets of symptoms are, in some respects, common to both these causes ; and more frequently still they are mixed up together, effusion taking place, yet the inflamma- tion going on. And we may understand how the whole collection of symptoms may vary and fluctuate, and assume an uncertain character, according as the inflamma- tory process has ceased, or is still in progress ; according as it exists alone, or is mingled with the further source of cerebral disturbance that is furnished by its own events ; and according as the inflammation may have come to an end, while its events remain behind, and declare their presence by appropriate signs in proportion to their place and extent, and their various kinds and combinations. What are these events ? In other words, what are the morbid appearances pre- sented after death in acute hydrocephalus ? In some cases we find traces of inflammation of the membranes of the brain ; a firm attachment of the skull-cap to the dura mater : occasionally some adhesion of the opposite surfaces of the arachnoid membrane to each other. Very commonly there is an effusion of serous fluid beneath the arachnoid in the meshes of the pia mater, and especially in the depressions between the convolutions. You would suppose, upon looking at this collected fluid through the arachnoid, that it had the consistence of jelly, but it is not so ; if you divide the arachnoid by means of a sharp scalpel, a perfectly limpid fluid makes its escape. Not unfrequently there are layers of coagulable lymph interposed between the arachnoid and pia mater ; this is a most unequivocal evidence of foregone inflammation ; and it is more frequently met with in the strongly marked cases. When portions of the cerebral mass are removed by shcing it, a great number of red points are often observed, speckling its cut surface ; I mention this appearance just to say, that, to the best of my belief, it does not war- rant any conclusion in repect to the state of the brain before death. We find th.ef.» 268 DISEASES OF THE BRAIN. red spots numerous in many cases, where there had been no cerebral affection rnani fested during hfe ; and they are not always to be seen when we are certain that there was inflammation. [The gray substance of the convolutions, in cases in which the sub-arachnoid tissue is strongly injected, is usually of a pale rose, or bright red colour. The lining membrane of the ventricles is occasionally injected, opaque, or covered with a pseudo-membranous exuda- tion, or with numerous white flocculi, which become very apparent when the membrane is immersed in water. It is often easily separated from the cerebral substance. The plexus choroides is very often injected, and thickened ; sometimes, however, it is pale and dis- coloured, and lined with small hydatiform cysts : this latter appearance has, also, been found in the cellular texture of the pituitary gland. — C] With respect to the nervous matter itself it is said to be sometimes softer than natural, and occasionally it has been found infiltered, as it were, with serous fluid ; wet, and so rendered soft, Gohs describes an instance of this kind, in which, he says, the fluid could be expressed from the cerebral substance as from a sponge. [In some cases the substance of the brain has been found of a firmer consistence than natural, and to a certain extent hypertrophied. A case is related by Golis, in which, upon opening the skull, tlie whole brain expanded, so that it could not again be replaced within the cranium. The convolutions are sometimes flattened, apparently from pressure against the ckulL— C] But the most common and characteristic change is softening of the central parts of the brain, tvith an elusion of serous fluid iiito the ventricles. Generally the effiised fluid is thin and watery ; serosity rather than serum. It contains less animal matter, perhaps, than any other animal production. Dr. Bostock found that of 103 parts, 98.6 consisted of water, 1 part of salt, and .4 only of animal matter. It is not, therefore, in common, coagulable by heat. The quantity effiised is uncertain ; speaking generally, it varies from two to six ounces. [In many cases the amount of effused fluid is very trifling ; in some scarcely a trace is to be discovered. The efibsion may take place in the arachnoid or sub-arachnoid tissues, or in the ventricles, or in all these parts at the same time. The greatest amount is generally met with in the lateral ventricle — occasionally the quantity is so great as to enlarge the posterior cornea, elevate the fornix, rupture the septum lucidum, and thus establish a free communi- cation between all the ventricles. The cellular tissue of the choroid plexus may also be distended with serum. When the serous efi'usion in the brain is considerable, it is often found also in the spinal canal. — C] But the effused fluid is not always clear and limpid ; sometimes it is turbid, like whey, or even puriform, with flocculent shreds floating in it. These have been con- sidered as flakes of coagulable lymph ; but I question whether, in many cases, they are not merely fragments of the softened and broken-down materials in the neigh- bourhood ; for the septum lucidum, the fornix, and other parts forming the walls of the ventricles, are very commonly found soft, and pulpy, or entirely disorganized.* The septum lucidum is perforated perhaps by a ragged irregular opening, the softened portion having fallen out ; the fornix has lost its consistence, and often its flgure, or falls asunder when the most gentle attempt is made to raise it, Dr, Aber- crombie holds not only that this softness is the result of inflammation, which I think cannot reasonably be doubted, but that the inflammation of these central white pans constitutes the essence of the disease, in very many cases of acute hydrocephalus ; and what bears him out in this opinion is the interesting fact, that this softened con- dition of the septum lucidum, fornix, and corpus callosum, may be fatal without any effusion of serum, and without any other morbid appearance, although with all the symptoms which are usually considered to indicate acute hydrocephalus. He rt4ates two striking examples of this kind; one of them was as follows, — A woman became affected with violent pain in her head, shooting from temple to temple. She was extremclv restless, tossing from one side of the bed to the other ; her eyes were slighil} suffuspd, and impatient of the light; pupils contracted ; the pulse tiO, soft and rather weak. She was repeatedly bled, both generally and topically, and [• This is the opinion of Barthez and Rilliet.] ACUTE HYDROCEPHALUS. 269 used purgatives, cold applications to the head, blistering, &c. For three days she was nnuch relieved by these measures : the violent pain was removed, and she com- plained of pain only when she moved her head. She was quite sensible, but oppressed, and inchned to lie without being disturbed. At the end of four days her speech became affected, of which she was aware, for she said she felt a difficulty in getting out her words. Then came stupor, and at times incoherence, and double vision, and at last coma, and dilated pupil. She died on the eighth or ninth day of the disease. The fornix and septum lucidum were found broken down into a soft white pulpy mass ; there was no effusion in the ventricles, and no other disease in any part of the brain. [In the cells of the arachnoid membrane there is often deposited a concrete yellowish matter, either soft and inelastic, or somewhat firm, elastic, and of a shining appearance. It is deposited either in patches, or in lines bordering the blood-vessels; and, as is the case with all the indications of inflammation in this disease, it is more commonly met with at the base than at the summit of the brain. Granulations and miliary tubercles are often interspersed in its midst. The whole base of the brain is often covered with a continuous layer of the yellowish gelatinous deposit alluded to. This deposit differs from the matter effused in in- flammation occurring in persons unaffected with tuberculous disease ; the difference is thus traced by Barthez and Rilliet (^Malad. des Enfants, tom. iii). The former is almost always solid, the latter almost always fluid ; the former occurs more especially at the base of the brain, the latter upon its convex surface ; the former is of limited extent, particularly when upon the surface of the hemispheres, the latter may spread over the greater portion of the surface of the brain ; finally, the former is almost invariably found in the cells of the pia mater, while the latter occurs habitually in the great cavity of the arachnoid. — C] Not unfrequently scrofulous tubercles are discovered in the substance of the brain ; and it is probable that these would have been more frequently met with if they had always been carefully looked for. They consist almost universally of a cheesy kind of matter, hke that of large tubercles in the lungs. [Tubercles, varying in size from that of a pin's head to that of a pea, are very generally found scattered irregularly over the surface of the pia mater, following it between the con- volutions ; occasionally, however, they occur in distinct patches of an inch or more in extent. They are commonly hard, and semi-transparent, sometimes opaque and of a whitish, grayish or yellowish colour. They are found upon all parts of tlie surface, the convex and lateral portions as well as the base, in the infractuosities of the convolutions, and in the fissures. According to Rilliet and Barthez, they are more frequent upon the convex surface of the hemispheres than at the base. Dr. Hamernjh (^Schmidt's Jahrbucher, 1845) fo;md them more frequently at or near the base of the brain. They are much more abundant upon the brain tlian the cere- bellum. They are met with, also, imbedded in the gray matter of the brain, and are her* often surrounded by a halo of redness, usually connected with an enlarged vessel, ramifying from the pia mater. More rarely, tubercles are detected in the medullary portion of the brain, where they are often overlooked in consequence of their pale, semi-transparent, yellow- ish tint. The plexus choroides, is, also, often covered with tubercles. They are very com- monly met with, likewise, on tbe serous membranes of the thorax and abdomen, in the lungs, and occasionally in the substance of the liver. In twenty-seven ovtt of thirty-three cases of hydrocephalus, Barthez and Rilliet found tubercles or granulations, associated with inflam- mation of the pia mater; in four cases the meningitis was unattended by any trace of tuber- cular deposition in the encephalon ; and in two cases, the granulations or meningeal tubercles were unattended with any traces of inflammation. In all the thirty-three cases the symptoms were nearly identical. — C] You will find a good deal said by writers on this disease, of morbid appearances found in other parts besides the brain, and especially in the abdominal organs, — enlargement of the liver, inflammation of its peritoneal covering, a preternatural development of Peyer's glands, tuberculous matter in the glands of the mesentery. One remarkable change is very often seen, viz., intussusception of the small intes- tines. This probably takes place a short time only before death, and appears to be the result of spasmodic or irregular movements of the bowels, analogous to those which are observed in the voluntary muscles. The intussuscepted portions arc easily pulled out, and show no marks of inflammation. There have been endless discussions respecting the true pathology of acute hydro- cephalus, and it may be proper that I should offer you a few remarks upon thi* point, before I proceed to the treatment of the disease x2 270 DISEASES OF THE BRAIN. I need not, I conceive, take any further pains to convince you that the disease is essentially inflammatory. We are inevitably led to that conclusion by the symptoms, which nearly resemble those that occur when undoubted inflammation has arisen from injuries of the head : by the appearances on dissection, which are always such as inflammation may have produced, as softening and effusion of serum ; and frequently such as nothing but inflammation could have produced, as suppuration, and the formation of adventitious membranes : and lastly, by the unequivocal relief given by blood-letting, and other evacuations, the blood drawn being sometimes also sizy. Many persons, as I have already hinted, lay great stress, when discussing the pathology of acute hydrocephalus, upon the previous unhealthy state of the nutri- tive apparatus. They hold that the primary disease — the /o;is et origo mali — lies in the stomach, or bowels, or hver ; and that the brain affection is secondary, and caused by sympathy with these distant parts : and this opinion they fortify by refer- , ring to the frequency of organic disease, met with after death, in the abdominal viscera. In accordance with these views of its origin, they propose to cure, or to prevent, hydrocephalus, by redressing the fauhy condition of the digestive organs. Now this, in my judgment, is not only an erroneous, but an unsafe doctrine : for it tends to divert our attention from the head, and to suggest a feeble and inadequate plan of treatment. The grand predisposing cause of acute hydrocephalus is cer- tainly the scrofulous diathesis, and this is why we see the complaint run so often in families : so that one child having died of that disorder afl^ords much ground for apprehending that others, belonging to the same family, will become victims to it. The constitutional tendency is hereditary, and children born with it are liable and likely to have strumous disease set up in various organs at once, or perhaps in suc- cession ; not, however, a succession of cause and effect, but of common relation to one pervading disposition. We need not be surprised that scrofulous inflammation should affect the brain and abdomen at the same time. When we find obvious organic disease of the brain, scrofulous tubercles for instance, which must have been antecedent to the hydrocephalus, it would be just as absurd to look to the abdomen for the cause of the hydrocephalus, as it would be to seek in the brain for an expla- nation of the cause of jaundice or of dysentery, when the liver or the colon w'as known to be diseased. I do not mean to assert that the morbid conditions of the brain and of the abdomen are perfectly independent each of the other. The vomiting that is so constant a feature of acute hydrocephalus, the constipation that is so common a consequence of head affections, affords familiar evidence of the influence which cerebral disorders may exercise upon the abdominal functions. Conversely, any disease in other ptyts of the body may react injuriously upon the brain, and may sometimes be regarded as an exciting cause of disease in that organ. The period of life is also a strong predisposing circumstance ; acute hydrocephalus being very much more frequent during infancy and childhood than at any subsequent time. It is said that fifty children are attacked by it in the first five months of life, for one child that has it afterwards. But it may occur at any age up to the twelfth or fourteenth year. After that period it is comparatively rare. Whatever tends to deepen and aggravate the scrofulous diathesis — improper or msufficient nutriment, exposure to cold, inadequate clothing, impure air — may be regarded as Vi predisposing cause of acute hydrocephalus. And whatever tends to call scrofulous disease into action, may be reckoned among the possible exciting causes of acute hydrocephalus. Any general irritation may bring it on. It some- times supervenes upon the drying up or repression of eruptions, as tinea capitis, or sores behind the ears. Such eruptions, therefore, occurring in strumous children, we must not attempt to cure suddenly ; and free purging should be employed when they begm to disappear. The irritation produced by difficult and painful dentition IS a very frequent exciting cause ; and this is a source of danger which, in many cases, may be obviated by timely and judicious management. Violent heating exercise has sometimes, apparently, kindled the cerebral inflammation. Among the 4'xciting causes we may place all physical injuries which, jar and stun the brain. ACUTE HYDROCEPHALUS. 271 blows on the head, falls from a height, although the head may not be the part struck i and all moral agencies which shock or strongly disturb the nervous system ; severe bodily pain, violent fits of anger, sudden fright. Golis goes even so far as to say that great terror and distress of mind in the mother during the latter months of preg- nancy may lead to the occurrence of acute hydrocephalus in the child ; and he brings forward this curious fact in support of his opinion : — A large proportion of the chil- dren that were born in Vienna soon after the bombardment of that place by the French, in 1809, were seized with convulsions within a month after their birth, and died of inflammation within the cranium ; effusion of coagulable lymph between the membranes, and of serum in the ventricles, being discovered on dissection. ^ LECTURE XXVI. ^citfe Hydrocephalus, continued. Prognosis and Mortality tf the Disease. Treatment ; Blood-letting ; Purgatives ; Cold ; Mercury ; Blisters. Pro- phylaxis. Spurious Hydrocephalus. Chronic Hydrocephalus, or Dropsy of the Brain. Shape of the Head and Face. Anatomical Conditions. Symp- toms. The disease, of which I described the symptoms in the last lecture, acute hydro- cephalus, is a very dangerous disease : and, when once it is fairly established, many more die of it than recover. Our chance of saving the patient's life, by appropriate treatment, is always greater in proportion as the complaint, or the tendency to the complaint, is detected ear/?/; and for that reason the precursory symptoms possess so high an importance. When our treatment commences while the symptoms are as yet rather those of the ppecursory state, than of the confirmed disease, it is impossible to say how many of those cases which, under such treatment, terminate favourably, would otherwise have ripened into well-marked hydrocephalus; and we must be content to have it said, VN-ithout its being possible for us to refute the assertion, that not all of the dis- orders which we treat as acute hydrocephalus are really instances of that complaint. We must act upon the worst supposition, and not wait until the nature of the symp- toms demonstrates that the malady is present, while it demonstrates also, at the same time, that it is well nigh hopeless. These are cases which peculiarly demand de- cision on the part of the medical man ; and we are bound to act, in some instances upon very shght indications ; as when, for example, we perceive what Ave thinV threatenings of acute hydrocephalus in a scrofulous child, or in a child belonging to a family in which others have already been cut off by that disorder. It has been supposed, by some, that the case is hopeless after effusion has taken place, but we cannot be sure of that ; nay more, there are no symptoms by which we can ever ieWfor certain that effusion has taken place, I remember to have heard it gravely maintained, in the debating societies which I sometimes attended when a student, that there are no such things as absorbents, and no absorption, in the brain ; and therefore that perfect recovery from serous effusion in that organ is impossible. [There is no evidence that the effusion within the cranium is the cause of danger, or even of the symptoms which mark the latter stage of the disease. — C] But this notion is refuted by plain and well-known facts. We shall see hereafter, that blood poured forth within the nervous pulp is capable of being removed by absorption. How an opinion so palpably erroneous could ever have found credit, except with that class of men who can or will believe nothing which they cannot see, I am at a loss to guess. The prognosis, always doubtful or bad, is a little better when the disease is vio- lent, and occurs in tolerably healthy subjects, than when it creeps on slowly and insidiously, and in weakly, scrofulous patients. In the former case there is more room for the adoption of active measures ; and the diseaso is more hkely to be ame- 272 DISEASES OF THE BRAIN. nable lo remedies, and less likely to be obstinate ; it is also less likely to depend upon a permanent cause, such as "the existence of a scrofulous tumour in the brain. The probable issue of the disease is often judged of by the state of the pulse. The quick pulse belonging to the earh^ stages of the disease will become slow ; but it may become slow in two very different ways : it may diminish in frequency in a gradual and moderate manner, and then we may hope that the alteration proceeds from the progressive declension of the fever ; or it may drop suddenly, which would be a reason for our fearing that the second stage of the disease was about to estab- lish itself. We must take care, under the former circumstances, not prematurely to assert that the disorder is on the decline, and the patient safe. On the other hand, if the pulse has been morbidly slow, a gradual and slight increase in its frequency must be considered as a favourable omen ; while its rapid and great acceleration would show that the disease was passing into its worst and final stage. I have already cautioned you against being misled by that deceitful truce, and ap- parent improvement, which is apt to take place in the course of the disease. If the signs of amendment continue, or make progress, during two or three entire days, we may venture to admit a little more hope. But the patient can never be considered secure while any approach to what are thought symptoms of effusion remains ; while the pupil continues dilated, for example ; or even so long as it does not con- tract briskly under a strong light. The prognosis is especially bad when acute hydrocephalus supervenes upon othei disease ; or when it is engrafted (as it sometimes is) upon the chronic form of the disorder. It is very seldom that the acute form subsides into the chronic. To show you that Ave are warranted in the expectation of sometimes carrying our patient through this most perilous malady, 1 will mention a few statistical facts that have been recorded in respect to its mortality. Dr. Odier, of Geneva, states that, upon an average, eighteen cases of acute hydrocephalus occur every year in that place ; and of these six get well ; i.e., the recoveries are to the deaths as one to two. Dr. Golis, to whose work I referred in the last lecture, and who had the charge of a large institution for children in Vienna, gives an account of thirty-seven cases, out of which five recov^ered. He had seen, upon the whole, forty-one instances of reco- very from acute hydrocephalus. Dr. Mills, who has also written on the disease, has narrated twenty-eight cases, all of which died but seven ; and JMr. Brichetau lost four out of eleven. Adding these together, and taking the average, we have seventy- six instances of the disease, and nineteen recoveries; exactly one in four. The cases in which recovery took place were mostly those in which antiphlogistic mea- sures were adopted earh). The treatment of acute hydrocephalus is difficult to conduct ; and scarcely less difficult to describe and teach. The disease being essentially an inflammation, requires, in its earlier periods at least, the remedies of inflammation. But we must ever bear in mind that our patients are children ; and, for the most part, weakly and scrofulous children. Their time of fife, and the presence of the strumous diathesis, both forbid that strenuous appliance of antiphlogistic remedies which might be proper and necessary in adults of strong and healthy frame. We take our weapons, however, in either case, from the same armoury. The only event of the inflammatory process compatible with the safety of the patient is resolution. To this end, therefore, must our efforts be earnestly directed. If the child be feverish, the pulse sharp, the head hot, the cheek flushed, the pain severe, and if, moreover, the case be seen early, there need be no doubt about the propriety of abstracting blood. It is a matter of obvious importance to ascertain how far we may safely and beneficially carry this measure, in the diseases of infants. Dr. John Clarke, a physician of large experience (the elder brother of the present Sir Charles Clarke), found that very young children would very well bear the lo^s of blood, even to fainting, once or twice : but that their vital powers were apt to a'iirk if the bleeding, to that extent, was oftener repeated. It is better, in my opinion, to apply leeches to the temples, or to the mastoid processes, of these little patients, than to cut one of their veins. Recollect that, upon very young children, leeches produce an effect tantamount to that of venesection. Their bites bleed more freely •ACUTE HYDROCEPHALUS. 273 than in grown persons, on account of the greater activity of the capillary circulation in children. No general rule can be prescribed in respect to the number of leeches to be used ; three will take as much blood in one case as half a dozen in another ; but assuming that one leech will, on an average, cause the discharge of one ounce of blood, we may apply three of them to a strong infant of six months, when the symptoms are violent. Of course the further efiiux of blood must be stopped if syn- cope occurs. In older children the quantity of blood requisite to be taken will be somewhat larger: six ounces drawn from a vein is a full bleeding, I should say, for a child five or six years old. I mention these quantities as mere approximations, as guides to what you may expect to find practically needful : the true measure and test of salutary blood-letting being in this, as well as in other inflammations, the effect it has at the time. The first bleeding, in what manner soever the blood is taken, should be a sufficient one ; should produce some decided and manifest im- pression. By attending to this rule you will break the force of the early disease more surely, and more safely too, than by drawing blood in frequent driblets ; a mode of using the remedy calculated to subdue the patient rather than to overcome his .nalady. You must afterwards go on with the leeches to the head, or you must with- .-old them, according to the exigency of the particular case ; according to the state of the pulse, the continuance or the cessation of the pain, the increase or diminu- tion of the fever, the previous strength and condition of the child, and so forth. And let me once more admonish you that, as you have to deal, in general, with scrofulous children, any superfluous removal of blood, the abstraction of more than is required for extinguishing the inflammation within the head, will be likely to prove injurious to the general system ; and even dangerously to depress the vital power. After the full formation of the comatose state, a further prosecution of the bleeding has some- times been rapidly followed by death. The next in rank and importance to bleeding come purgatives. They are to be exhibited with the threefold view of correcting depraved secretions, of clearing the ahmentary canal of its irritating contents, and above all, of deriving, as the phrase is, from the head ; producing a discharge of the watery parts of the blood, and taking ofT the stress from the cerebral arteries. The best forms of purgative medi- cine to be used for these purposes with children, consist of calomel and jalap, or calomel and scatnmony ; and if these do not act freely, senna and salts must be given in aid of them. I have already made you acquainted with Dr. Abercrombie's high estimate of the efficacy of purgatives in inflammation of the brain, whether in the child or in the adult. Dr. Whytt, again, states that he never saw even tempo- rary relief of the symptoms produced by any other means than those which increased the evacuations. Purgatives are to be administered, therefore, at an early period. But sometimes the stomach is so irritable that it rejects them. A previous bleeding will often correct this ; and it is no small part of the benefit derived from the ab- straction of blood, that it prepares the way for the more efleclual operation of aperi- ents and of mercury. A large clyster will often be of service, both in seltlmg the stomach, and in procuring stools, when there is much vomiting, and a continual rejection of medicine given by the mouth. Dr. Cheyne mentions a form of medi- cine by- which he sometimes succeeded in quieting the irritable stomach, and pro- curing evacuations; he would give a drachm or two of magnesia, saturated with lemon juice, every two or three hours. You may sometimes get calomel and scam- mony, however, to remain on the stomach, when almost every other medicine is rejected. The purgative plan should be steadily persisted in for several days. To show you how torpid the bowels are apt to be in this disease, and how diffi- cult It sometimes is to procure evacuations from them, I may mention the following circumstances which I heard Dr. Alison relate as having occurred in the practice of his uncle, the late Dr. Gregory, of Edinburgh. He had one patient who took \AS) grains of calomel in the course of five days ; yet his bowels were not relieved till he had also taken two doses of jalap, the first of 30, and the second of 35 grains. In another case, a child of twenty-eight months took in nine days 3.30 grains of calo mei (nearly 40 grains a day) ; and in six of these days 136 grains of jalap (more than 20 grains a day) : the effects were a gentle purging from the jalap, none fro/n 18 274 DISEASES OF THE BRAIN. the previous calomel, and but slight salivation. The child recovered after having been nearly in a comatose state. Of course large doses of this kind are never to be given, uulil tiie inefficiency of smaller ones has been ascertained. Cold applied to the head : — I have before given you examples of its power. It is especially useful in the early periods of the disease, when there is rnucb heat, and when evacuations have been obtained. I am doubtful about the propriety of keeping ice in contact with the surface of the head in very young children. It will in many cases be sufficient to lay a linen rag wet with cold water (or spirit and water, to promote evaporaiion), upon the child's head, taking care to renew it fre- quently, not merely as often as it gets dry, but as often as it gets hot ; or water may be poured from a pitcher upon the head, a basin being held under the chin. Dr. Darwall states that he has known cases, which seemed utterly hopeless, retrieved by letting water fall in a small succession of drops upon the scalp, and coniinuing it until the head no longer recovered its high temperature upon intermitting the dropping. I need scarcely say that under all circumstances it is expedient to keep the head somewhat elevated. The influence of this mode of applying cold to the head is increased, and perhaps rendered safer, by immersing the lower extremities of the patient at the same time in warm water. Different opinions have been held in respect to the value of mercury in this dis- ease. Knowing how powerful an influence it has in controlling inflammatory action, and that the inflammation in acute hydrocephalus often leaves behind it traces show- ing that it was of the adhesive kind, I should not omit giving mercury ; but (as 1 stated when upon the subject of encephalitis) I should not give it with the direct object of affecting the gums, of producing ptyalism. I believe the evidence respect- ing the efficacy of mercury carried to salivation in acute hydrocephalus is this : — ■ that some few very desperate cases have got well, the improvement commencing at the time when the mercurial influence on the system was becoming apparent ; and that in other cases, the occurrence of salivation has been followed by no alleviation of the symptoms, but the disease has run on, unchecked, to its fatal terminaiion. In truth it is a very difficult matter to salivate a child; there is a great reluctance in the system, at the earlier periods of hfe, to take on the specific mercurial action ; and the disinclination seems peculiarly strong during the presence of this disease ; and the younger the child, the more difficult is it to affect the gums. Perhaps this may be couL-idered fortunate ; for when salivation does take place in these little patients, it sometimes proceeds to an alarming extent. Dr. John Clarke, who employed calomel largely in a variety of diseases, never saw more than three instances in which salivation was produced in children under three years of age. If you are desirous of taking the chance of the specific influence of mercury doing good, you had better give calomel as a part of the purgative plan, and rub in some of the mercurial ointment; you had better do this than lock up the child's bowels by combining opium with the calomel ; not to mention the injurious effects of opium upon young children in general, and in the early period of head affections in parUfcuIar. The calomel should be given steadily, in equal doses, at equal in- tervals. Green evacuations from the bowels, resembling wet tea-leaves or chopped spinach, usually follow its continued administration ; and this appearance (like the rising of the gums in adults) is generally regarded as a proof that the influ- ence of the mineral is felt by the system, and that it is doing all the gQod of which it is capable. Upon the whole, I believe it will be found that they who have had the most ample experience of this perilous disease, have ended with the conviction, that moderate local dep''etion, and the regulated exhibition of mercury in small quantities, afford, generally, a better chance of success than the large bleedings, and the full and fre- quent doses of calomel, which have sometimes been recommended. Of blisters I may repeat the substance of what I stated when we were considering encephalitis. I sliould abstain from them at the commencement of the disease. Even when applied at a distance from the head, they are apt to prove a source of hurtful irritation in these young and susceptible subjects. But in the second stage ttf the malady, I believe blisters are often of good service. They may be applied ACUTE HYDROCErHALUS 275 to the nape of the neck, or to the head : and several may be applied in succession ; or the ulcerated surface may be kept open by the help of irritating ointment, such as the unguentLim cantharidis, or the ceratum sabins. These are the main remedies to which we trust in the treatment of acute hydro- cephalus : bleeding, purgatives, cold, in the outset ; mercury and blisters, of more equivocal efficacy than the former, in the more advanced stages of the disease. When there is much irritability towards the decline of the disorder, or in its latest period, opiates may cautiously be tried ; they sometimes have appeared to be ex- tremely beneficial : two or three grains of Dover's powder furnish a very eligible form of opiate in such cases. [Dr. Wood (Prac. of Med. vol. 2, page 636) remarks : " One additional remedy should be employed in this form of meninsritis, from its supposed influence over the scrofulous habit of body, and in the hope, that if it do not promote the absorption of the tuberculous matter, it may possibly prevent its deposition. I allude to iodine. I would commence with it in such doses as the stomach of the child could bear, and continue it throughout the treatment. The iodide of potassium, or the compound solution of iodine (U. S. Ph.) should be einployed. The iodide of mercury might widi great propriety, be substituted for the calomel at the stage at which it is desirable to aim at the mercurial impression; and, in this case, the other preparations of iodine should be abandoned." — C] I do not feel called upon to say any thing, in addition to what I stated m a former lecture, about other remedies that have been proposed in acute hydrocephalus ; digitalis, colchicum, squills, antimony. These may be useful, when they act as diuretics : but they have no specific virtue. I have told you the remedies which I beheve to be the best ; and which will save the patient, when judiciously used, if the case be within the compass of our cure : and you will do well to learn how to manage these powerful means. I am confident you will find that more to your pur- pose than trying now this and now the other remedy, because it is new, or because some persons tell you they have been wonderfully successful with it. [When the disease has reached the paralytic stage, its fatal termination is usually supposed to be inevitable ; but Dr. Christie, of Scotland, and Dr. Woniger. of Hamburg, have each re- cently reported a case, in which a cure was effected after paralysis had occurred, by the administration of iodine. Dr. Christie employed a solution, containing sixteen grains of iodide of potassium, and four grains of iodine to one ounce of water, given in the dose of a tea- spoonful every four hours, at the same time diat a weak ointment of the biniodide of mer- cury was rubbed ujjon the child's scalp. Dr. Woniger gave a solution of one drachm of iodide of potassiu!!!, dissolved in half an ounce of water, in the dose, at first, of forty, and subsequently of fifty drops every two hours. In the case of Dr. Christie, the first indication of improvement occurred in thirty-six hours after the employment of the iodine was com- menced with, but in Dr. Woniger's case, not until after the end of seventy-two hours. In bjth the recovery is said to have been complete and permanent. — C] Let me say a word in reference to the prevention of this disease : concerning which your advice will be sure to be asked again and again. In families, in which acute hydrocephalus has occurred, or wliich show decided marks of the scrofulous diathesis, the earliest attention should be paid to any deviation from the healthy con- dition of any of the functions. W^eaned children in such families should be kept upon a nourishing but light and unstimulating diet ; consisting of well-dressed vege- tables, farinaceous substances, and a moderate proportion of animal food. Particular care should be taken to keep the bowels regular ; not that weakening purges should be given, but the bowels should be fairly relieved at least once every day. Any disturbance of the digestive organs should be immediately corrected ; by antacids, laxatives, change of diet, and sometimes by mercurials, as the hydrargyrum cum creta. Such children should also, if possible, be brought up in the country, and bo freely exposed to mild and dry air; and in winter great care should be taken to have ihem sufficiently clothed. During the hazardous period of dentition, the state of the teeth and gums must be sedulously attended to. There is good reason foi believing that a seton or an issue in the neck or arm has been very serviceable in warding off and preventing attacks of the disease. Dr. Cheyne mentions some striking instances of the good effect of establishing an artificial irritation at some distance from the brain, when there has been a disposition to disease in thai organ. 276 DISEASES OF THE BRAIN. There is another caution, too, which you will often find reason for suggesting : and that is, not to press or encourage the development of the mental faculties m children who are quick and intelligent beyond their years. Parents are apt to be proud of the early acquirements of their little ones : they are not aware that such precocity of the mind implies danger to the health of the body ; and they provide them with instructors, and to a certain extent abridge their hours of exercise and amusement, that they may do justice to their cleverness. But it is our duty to admonish them of the risks they are thus running: to advise them to think only, for the present, of corroborating the corporeal strength of the child ; and to avoid over-cultivation of his intellect until this dangerous period of his existence is got over. There is still one point remaining, and one of the utmost importance, in relation to the acute hydrocephalus of children. I told you in the last lecture that, in general, the diagnosis was not very difficult. But there is a form of disorder very apt to be mistaken and treated for acute hydrocephalus, by those who are not forewarned ; and one which may be rendered fatal, if the remedies of acute hydrocephalus be di- rected against it. Encephahtis, whether it occur in the child or in the adult, has its spurious double. As, in morals, every virtue has its corresponding vice, which apes its actions and assumes its garb, so is it also with many opposite bodily disorders : and it is of great moment that we should be capable of discerning the essential dif- ference of character that lurks beneath external similarity of feature. It is a most curious, but unquestionable fact, that anxtnia of the brain, a diminution of its natural supply of red blood, and exhaustion of the nervous power, will produce symptoms very much resembhng those which result from the diametrically opposite condition. To excess of pressure on the one hand, and to defect of pressure or support on the other, there are many phenomena in common. If you pay no regard to the state of the general circulation, as indicated by the temperature and b}' the pulse, you will find the actual symptoms of syncope, and of apoplectic fullness, to be identically the same. When a human being bleeds to death — as many do from wounds, from ute- rine hemorrhage and so on — what do we see ? Why the patients may have nervous delirium, become convulsed, and then insensible, with a wide and fixed pupil. The outward visible signs of concussion and of compression of the brain are very much alike. The vulgar always confound them, and are clamorous that a vein should be opened ; a measure which would be proper and useful in the one case, but mur. derous in the other. It is the same with the functions of other parts : we have pal- pitation of the heart when that organ is insufficiently supplied with blood ; palpitation when it is over-loaded ; dispnoca, or hurried breathing, when the lungs are congested ; hurried breathing when blood does not arrive in them plentifully enough. You must see that the importance of distinguishing between the causes of these analogous phenomena is immense. Several authors in modern times have noticed the condition of the brain to which I now wish you to attend, and -which may be called spurious hydrocephalus. Dr. Marshall Hall, Dr. Abercrombie, and the late Dr. Gooch — each of these three physicians appears to have discriminated ibr himself the spurious from the genuine disease; but their several accounts of it were made public in the order of time in which I have here mentioned their names. Dr. Gooch's Essay is entitled — " Of some Sijmptoms in Children erroneously attri- buted to Congestion of the Brain." His description of the disorder in question is very graphic. It is chiefly indicated, he says, by heaviness of head and drowsiness. The age of the little patients whom he had seen so affected was from a few months to two or three years ; they were generally small of their age and of delicate health, or had been exposed to debilitating causes. The ph3'sician finds the child lying on its nurse's lap, unable or unwilling to raise its head ; half asleep; one moment open- ing it? eyes, and the next closing them again, with a remarkable expression of languor. The tongue is slightly white, the skin is not hot, at times the nurse re- marks that it is colder than natural ; in some instances there is now and then a slight and transient flush. In all the cases that Dr. Gooch saw, the bowels had been already disturbed by purgatives ; the symptoms had invariably been attributed to t't)ngr3tion of the brain ; and the remedies employed had been leeches and cold lotions SPURIOUS HYDROCEPHALUS. , 277 to the head, and purgalives-^especially calomel. Under this treatment the patients had gradually got worse, the languor had increased, the pulse become quicker and weaker, and at the end of a certain number of days the children had died. In two instances he had known coma to come on during the last few hours ; stertorous breathing, and dilated and motionless pupils. Dr. Hall describes a very similar set of symptoms : the face pale, the cheeks cool or cold, the eyelids half closed, the eyes unattracted by any object put before them, the pupils unmoved on the approach of Hght, the breathing irregular and suspirious, the voice husky. These symptoms are sometimes preceded by irritabihty, and a feeble attempt at reaction ; in which case the diagnosis requires extreme care and circumspection. He attributes the disorder, which he calls the " hydrocepha/ozJ disease," principally to exhaustion. In early infancy the exhaustion has its origin chiefly in diarrhoea, or catharsis ; in the latter periods of infancy, in the loss of blood, with or without a relaxed condition of the bowels. The diarhoea is often produced by improper food, and frequently succeeds weaning; or it results from the ill-timed administration of purgative medicine. The exhaustion from loss of blood generally follows the application uf leeches, for some previous complaint — or for this very com- plaint itself, when incipient, and misunderstood. I will take one of Dr. Gooch's cases in illustration, and give it you in his own words. "I was going out of town (he says) one afternoon, when a gentleman drove up to my door in a coach, and entreated me to go and see his child, which he said had something the matter with its head, and that the medical attendant of the family was in the house, and was just going to apply leeches. I went with him immedi- ately, and when I entered the nursery I found a child ten months old, lying in its nurse's lap, exactly in the state which I have already described ; the same unwilling- ness to hold its head up, the same drowsiness, languor, absence of heat and all symptoms of fever. The child was not small of its age, and had not been weak ; but it had been tvcaned about two months, since which it had never thriven. The leeches had not been put on. I took the medical gentleman into another room, related the foregoing case (z. e., a case in which a child had been leeched out of its life), and several similar to it, which had been treated in the same way, and had died in the same way. Then I related to him a similar case which I had seen in the neigh- bouring square, which had been treated with ammonia and decoction of bark, and good diet, and which had recovered ; not slowly, so as to make it doubtful whether the treatment was the cause of the recovery, but so speedily that at a third visit I took my leave. He consented to postpone the leeches, and to pursue the plan which I recommended. We directed the gruel diet to be left olT, and no other to be given than ass's milk, of which the child was to take at least a pint and a half, and at most a quart, in the twenty-four hours. Its medicine was ten minims of the aro- matic spirit of ammonia in a small draught every four hours. When we met the next day the appearance of the child proved that our measures had been right; the nurse was walking about the nursery with it upright in her arms. It looked happy and laughing. The same plan was continued another day ; the next day it was so well that I took my leave, merely directing the ammonia to be given at longer inter vals, and thus gradually withdrawn ; the ass's milk to be continued, which kept the bowels sufficiently open without aperient medicine." This case contains both a pic- ture of the morbid state and a summary account of the treatment it requires. Instead of the sal volatile, you may occasionally substitute with advantage from five to ten drops of brandy m^ixed with arrow-root. You are to restrain diarrhoea if it exists ; give the child plain nourishing diet — there is none so good for it as that furnished from a mother's breast ; caution the nurse or mother against raising it into the upright position ; keep its extremities warm with flannel ; and if the season permit, let a current of mild fresh air blow freely over it. Bear in mind, then, the distinctive characters of this spurious hydrocephalus — the pale, cool cheek ; the half-shut, regardless eye ; the insensible pupil ; the interrupted sighing respiration : and when the mere symptoms are more ambiguous, your judg- ment concerning the true nature of the case will be much aided by tracing the man Her m which they came on, and the causes to which they seem to be attribuiah!c y 278 DISEASES OF THE BRAIN. In very young children — in respect to whom the question is most likely lo arise — ■ you may often determine between contjestion and exhaustion, between fullness and emptiness, between too much and too little pressure, by a very simple and easy test, which is not adverted to, so far as I remember, by any of the three writers whom I have mentioned. I mean, by taking notice of the slate of the unclosed fontanelle. If the symptoms proceed from plethora, or inflammation, or an approach to inflam- mation, you will find the surface of the fontanelle convex and prominent, and you may safely employ, and expect benefit from, depletion. If, on the other hand, the symptoms originate in emptiness and want of support, the surface of the fontanelle will be concave and depressed ; and in that case leeches, or other evacuants, will do harm, and you must prescribe better diet, ammonia, and so forth. All that has hitherto been said has reference to acjde hydrocephalus, which is an injiammatlon. I have next to speak of chronic hydrocepbalus, which is a dropsy. From some cause, not well understood, a watery fluid collects within the skull, most commonly in the ventricles of the brain ; and this occurring at the earlier periods of life, before the whole of the brain-case has become solid, the containing parts j'ield to the increasing pressure, and the size of the head is augmented in various degrees; at the same time the cerebral functions are more or less deranged. This droj^sy of the cranial cavity often commences before the period of intra-uterine life is com- pleted, and the head of the foetus becomes so large, that it cannot pass with safety into the' world. Accordingly, many of these infants perish at the moment when their separate existence commences ; — nar.centcs moriunlur. The pressure of the maternal pelvis is fatal to them ; or the diseased head bursts ; or it is crushed by the accoucheur, to preserve the life of tbe mother. The skull is emptied of its contents, and the shell, if I may so call it, collapsing, passes through the natural outlets. In many cases, however, the dropsical skull is expelled entire and unhurt, and the infant lives for a shorter or longer period. Sometimes the fluid does not begin to accumulate till after birth : in a few days, however, or after some weeks, or some months even, the head is perceived to enlarge with a rapidity quite disproportionate to the growth of the other parts of the body ; and enlarging, it becomes misshapen also. The intervention of the membranous partitions called fontanelles and oj.'en sutures, between the ununited bones, allows the centrifugal pressure of the gradually accumulating water to modify the shape of the head. These membranous inter- spaces are unnaturally wide, and more numerous than in healthy children. Never- theless the process of ossification goes on, but the bones are extremely thin. We see little islands of bone in seas (as it were) of membrane. By degrees, if the child survives, the proportion of membrane to bone becomes less and less, and at length the whole brain-case is hard, and firmly closed up, its surface exhibiting an unusual number of joinings ; there are man}'- ossa triqueira. In the mean time the direction and relations of the loose and yielding bones are altered. The os frontis is tilted forwards, so that the forehead, instead of slanting a little back, rises perpendicularly, or even juts out at its upper part, and overhangs the brow. The parietal bones bulge above towards the sides; the occiput is pushed back ; and the head becomes long, broad and deep, but flattened on the top. This, at least, is the most ordinary result. In some instances, however, the skull rises up in a conical form, like a sugar-loaf. Not unfrequently the whole head is irregularly deformed, the two sides being unsymmetrical. Some of these rarer varieties of form are fixed and connate ; others are owing, probably, to the kind of external pressure to which the head has been subjected. While the skull may be rapidly enlarging, the bones of the face grow no faster than usuil, perhaps not even so fast ; and the disproportion that resuhs gives an odd and pecuhar physiognomy to the unhappy beings who are the subjects of this calamity. They have not the usual round or oval face of childhood. The forehead ?s broad, and the outline of the features tapers towards the chin. The visage is triangular. The great disproportion of size between the head and the face is diag- nostic of the disease, and would serve to distinguish the skull of a hydrocephalic ohild from that of a giant. Heartless parents sometimes make a wTetched profit of CHRONIC HYDROCEPHALUS. 279 the deformity. A penny show of that kind existed very recently in the immediate vicinity of this college. When, after deaih, we explore the physical causes of these singular deviations from the natural figure and bulk of the cranium, we find that they proceed from the pressure of accumuiaied water: the complaint is manifestly a dropsy. But the situation of the water, and the condition of the brain itself, are subject to some curious varieties. In a certain number of cases the brain is incompletely formed ; deficient in some of its parts, or even altogether wanting. That portion of the cranial caviiy which should contain the nervous pulp is filled up by a thin pellucid fluid. From some unknown cau^e, operating during the period of intra-uterine life, the progressive formaiion of the brain has been arrested. Marks of imperfect development are often visible in other parts of the same infants ; they have a hare-lip, a bifid spine, or a fissured palate. It is in cases of this kind generally that the skull, unnaturally small })erhaps, is pinched up into a conical peak, and has considerable thickness. They are obviously hopeless cases. To the physiologist they are subjects of much inte- . est ; for the practical physician they have none. But in the majority of instances, when the infants survive their birth, the liquid :3 contained in the central cavities or ventricles of the brain, which are expanded into ' ne. The convolutions are unfolded, and the cerebral matter is spread out into a iiollow sphere; the irregularities of the surface have disappeared; the whole of the brain is smoothly extended in a thin layer, immediately beneath the bones and the membranes that connect them, and surrounds the inclosed liquid like a bag. Less frequently a different state of matters is seen. The liquid, instead of being included within the cerebral substance, lies in contact with the dura mater; while the brain, perfect in all its essential parts, is at the bottom of the cavity. The difference, how- ever, is more apparent than real ; the two conditions are substantially the same, only that, in the one case, the solid parts that lie around the ventricles gradually expand as the fluid slowly collects, much as an air-balloon dilates in proportion as gas is in- troduced within it ; while in the other case the seams, or connnissures (as they are technically called), that unite the hemispheres of the brain, give way, or are deficient, so that the ventricles, and the general sac of the arachnoid form together one huge cavity ; the hemispheres are turned aside, or folded back ; the surfaces that naturally have a central aspect look upwards, and seem to constitute the summit of the cere- brum. This was the state of the parts within the immense skull from which the largest of the casts before you was taken. It belonged to a man named Cardinal, who died in Guy's Hospital, in 1825, and of whom Dr. Bright has given a very .mteresting account. Now some of the consequences of this distension of the brain and skull with watery fluid are simply mechanical. The child is top-heavy. His large unwieldy head is too much for the muscles of his neck to sustain without faligue ; or even, when they are unassisted, to sustain at all. He walks gertly and carefully, like a person balancing a heavy load upon his head ; or he holds and partly carries his liead with his hands, as a milkmaid steadies and supports her pail ; or he reclines the weight of his burden upon the chair, or table, as he sits. But far more important effl'cts of the disease are those which relate to the three great functions of the brain. The child is soon found to be deaf or blind ; or palsied in one or more of its limbs ; or idiotic ; or all these. In other words, the special senses, the power of voluntary motion, and the mental faculties, are apt to be defec- tive or perverted. Instances, however, do occur, in which these functions are, for some time, but little deranged. The greater number of those who are afflicted with dropsy of the brain either recover or die during their infancy. Still, a few survive, bearing their complaint to the adult period, and even to old age ; and in some of these individuals who, with excessively large heads, have yet numbered many years of existence, the intellect and the senses, if not entii-e and perfect, have been suffi- ciently effective to answer the common wants and purposes of social life : the moral emotions strong, the feelings lively and correct, the memory tolerably retentive, the reasoning powers respectable. Dr. David Monro relates the case cf a hydrocephalic 280 ^ DISEASES OF THE BRAIN. girl, SIX years old, whose head measured two feet four inches in circumference. She is described by him as being "as hveiy and sensible as most of her age," and as " having a strong memory." Dr. Brighl's patient, Cardinal, was nearly thirty years of age when he died. He was born in 1795. At the time of his birth, his head was only a little larger than natural ; but it had a pulpy feel, as if it were almost destitute of bony matter. A fortnight afterwards, it began to increase rapidly; and when he was five years old, it was but little less, according to his mother's account, than when he died. He could not walk alone till he was nearly six, and then only on level ground. If he attempted to run, or to stoop, he fell down. He was sent to school when he was about six, and soon learned to read well and to write tolerably ; but writing he soon gave up, because, as he was near-sighted, it obliged him to stoop, which he could not conveniently do. When a candle was held behind his head, or when his head happened to be between a spectator and the sun, the cranium ap- peared semi-transparent ; and this was more or less the case till he was fourteen years old. About the age of twenty-three, epileptic fits began to occur ; and after that his health, which previously had been very good, failed somewhat. The ossifi- cation of the skull was not complete till two j^ears before his death, the anterior fontanelle being the last part that closed. It has been mentioned that he was near- sighted ; but he was very quick of hearing, his taste was perfect, and his digestior? good. Dr. Bright states that his mental facukies were very fair, and his memory tolerable ; but it was not retentive of dates. It was said that he was never known to dream. There was something childish and irritable in his manner, and he was easily provoked. He died, at last, of fever and diarrhoea. There were seven or eight pints of fluid within the cranium, in contact with the dura mater. On the base or floor of the skull lay the brain, with its hemispheres opened outwards, like the leaves of a book. How comes it that the cerebral functions are thus sometimes fulfilled, or ^o on so well, when the machinery through which the mental powers are manifested — the instrument whereon and whereby the immaterial principle mysteriously operates — is so palpably and greatly deranged ? How comes it that life, and especially the life of the mind, subsists at all ? These questions open very interesting considerations. It would appear, from such cases as I have been referring to, that the curious arrangement and collocation of the several parts of the brain are rather a matter of convenient package than of necessary relation. The pulp which furnishes the medium of sense and thought, and volition, is there, but it is disposed in an unusual shape. In neither of the two varieties of the malady that have been described as being compatible with prolonged existence, is there any necessary diminution of the cerebral mass. The brain itself, which forms a bag in the one case, and is split in halves in the other, has been found to weigh quite as much as a healthy brain at the same period of life. There has been no loss, therefore, of substance ; the pressure iias been gradual, and it has not been made to act injuriously by counter-pressure ; no effectual resistance has been afforded by the rigidity of the brain-case ; and thus the unopposed distending force neither causes absorption of the cerebral pulp on ;he one hand, nor, on the other, induces coma, or convulsions, or idioc}-, by its com- pression. Most commonly, however, the mental and voluntary functions are maimed or per- verted ; and these serious calamities make parents look at a large head in a young child with anxious solicitude. But you are aware, after what I stated on this sub- ject in the last lecture, that the head may be extravagantly large Avithout dropsy of the brain and without disease. .We have just seen that, while the brain itself is gradually unfolded, or its hemi- spheres are parted and turned aside, bj' the liquid accumulating within the cranium, the I unctions of the organ ma}' suffer but little, so long as the yielding brain-case permits the expansion or separation of the nervous substance, without inordinate pressure. But as soon as undue pressure begins to be exercised, then morbid symp- 'oms arise, or the defects that have previout^h^ shown themselves are aggravated. Hence that period of life becomes a perilous period, at which the skull, by the rlosure of its fonianelles and sutures, loses its capability of further expansion. In CHRONIC HYDROCEPHALUS. 281 some raie cases, the closed sutures re-open under the augmenting pressure, and a respite it> thus obtained. Dr. Baiilie has recorded an instance in which this hap- pened in a boy seven years old. A similar case is mentioned in Dr. Yeat's work on hydrocephalus. The patient was a boy nine years of age. The sutures of his skull separated agaui after having been united ; and it was remarked that the teeth in the jagged edges, whereby the bones interlock with each other, were much fewer •han is usual, ll this be always so when the sutures give way, it will serve to faci- litate our understandmg how such a separation can take place. The skull may, however, go on expanding, although the sutures are permanently closed ; there still being left intervals between the several points of ossification, which intervals are covered by membrane oniy. The beautiful preparation on the table, showing this remarkable state of the cranium, I have borrowed for your inspection from Dr. Sweat- man's museum. Indeed, although I have spoken of this complaint as being especially a disease of childhood, it does occasionally commence long after the skull has become a complete case of bone. Enlargement of the head, in these cases, is impossible ; but this cir- cumstance, and the symptoms it is apt mechanically to produce, form the only differ- «i z2 294 DISEASES OF THE into perfect coma, the pulse becomes slow and laboured, the po\%'ers of speech and degluti- tion fail, his stools are passed involuntarily, and death finally closes the scene. All this may occur in a surprisingly short space of time ; some of the cases ran their course in forty-eight hours, and the greater number terminated about the fourth day, whilst some few were pro- Jonged over a fortnight or three weeks. Examples are on record of death from the disL-a^e in so short a period as fifteen hours. Notwithstanding, in some instances, an exalted sensibility of the cutaneous surface gene- rally was obssrved, such as pain more or less intense in the head, heat of scalp, congestion of the conjunctiva, strabismus, intolerance of light, &c. ; yet. in many, no such evidence occurred, until the laboured pulse, the dilated pupil, the profound coma, or the severe con- vulsion, told but too plainly that the death struggle was at hand. When the sensibility of the cutaneous surface generally was in a state of exaltation, the patient complained of being " sore all over," and winced, upon the slightest touch, or refused to change his position in bed, from the pain consequent upon the slightest movement; (the observation of this symptom is due to Dr. MDowel ;) but far more frequently a diminution of tactile sensibility and confirmed stupor, afforded grounds for the worst anticipations. Dr. ]\Iayne more than once noticed irregular and laboured respiration as a leading symp- tom ; and this, in itself, provided there was an absence of stethoscopic evidence of thoracic disease, would constimte a valuable diagnostic. Notwithstanding that the distressing tenderness of the epigastrium, associated with cDnti- nued irritability of stomach, would seem to indicate decided disease of that viscus, Dr. M. has nevertheless found the abdominal viscera absolutely healthy in the post-mortem exami- nation of two cases, in which diese symptoms persisted in a very marked manner to the close. The fatality of the disease, as it appeared in Ireland, was very great. The same is true in regard to the French epidemics. At Avignon, M. Chauffard lost no less than twenty-nine of his first patients ; and, according to statistical calculations, not less than eighty per cent, of the cases noted during the epidemic in France terminated fatally. ]\I. Faure-\ illar lost 66 out of 154 cases ; M. Forget 24 out of 40. M. Tourdes states that of 195 soldiers attacked, 122 died. In Gibraltar, according to Dr. Gillkrest, 42 deaths occurred among 450 persons attacked. The line of treatment most likely to prove successful requires our fullest consi- deration. It is much to be feared. Dr. M. remarks, that where sjTnptoms denoting extreme collapse show themselves from the commencement, all tlie resources of our art will prove unavailing. The prompt application of the most powerful excitants to the cutaneous surface, particularly mustard and turpentine, aided by heat and friction, and directed especially to the region of the spine, and to the extremities, seems to promise some advantage. Difl'usible stimulants should be employed as sparingly as possible, seeing that an intense inflammation, affecting the very centre of animal life, must remain to be combated after reaction sets in. General and topical depletion, so soon as it can be borne with safety, and the early and free exhibition of mercury, both by the skin and stomach, should constitute our chief dependence. Even this active treatment will often disappoint us. In one case, the jugular vein was opened by Dr. M. within a few hours after the accession of the disease, and blood was drawn in a fill stream, as long as the boy's strength would permit; this was followed up, at short intervals, by relays of leeches to the ten>p]es and inastoid processes; tlie mercurial plan was, at the same time, most energetically pursued, and blisters, with mercurial dress- ings, were applied to the head, and along tlie spine. Yet all was of no avail ; the patient died in convulsions, on the fourth day. In other cases, the same measures have been attended with perfect success. The French physicians, who have described the epidemic form of cerebro-spinal meningi- tis, are not agreed as to the most successful plan of treating the disease. AI. Faure-Villar tried, it is said, all rational methods, but declares that no one seemed superior to the rest. M. Forget recommends the antiphlogistic plan of treatment at the commencement of the case, and subsequently opium. M. Rollet found that all the cases of simple cerebro-spinal meningitis — that is to say, of inflammation of the membranes without lesion of the nervous centres themselves — yielded to simple but energetic antiphlogistic treatment, aided by coun- ter-irritants to the skin. One remedy only he found adequate to control the more violent eases, when the brain and spinal cord also suffered, and this was cauterization. In one case which is detailecf, the actual cautery was applied at twelve distinct spots along tlie spine, besides counter-irritants M. Gaussuud, who regards the disease as a subintrant cephalalgic fever, produced by marsh miasmata, affirms that, of 162 soldiers attacked, only two died afler he commenced to neat them with medium doses of sulphate of quinia, at the same time that he employed purges, and, at the commencement, venesection. M. Chautlard failed to cure the malady by d.itiphlogistic means, the most prompt, direct, and energetic — by revulsives, purgatives, calo- mel, as well as by various tonics. Opium, however, he found to triumph o,ver it, but it was necessary to give it in large doses. The sulphate of quinia was advantageously combined with the opium. Before this plan was adopted, only one case, we are told, was cured out SPINAL COR . 295 of thirty. Afterwards, the disease was less fatal than in sporadic cases. M. Tourdes agrees with M. Chauifard that the usual antiphlogistic means were of no avail ; but he cannot con- firm all that the latter has said in favour of opium. — C] Inflammation of the substance of the spinal cord leads to the same changes in its texture which have been already spoken of as being often the results, in the brain, of inflammation of the cereim/ matter. Softening — induration — suppuration. I need not, therefore, again describe the physical characters of these alterations. The symptoms which flow from inflammation of the nervous pulp of which the spinal marrow is composed, are by no means uniform ; nor can we expect that they should be so, when we recollect what has been already stated of the different effects that must ensue according as different parts of the cord happen to be implicated. The phenomena will vary likewise, according as the inflammation is acute or chronic. If we recollect how many parts of the body depend for their power of motion, and for their sensibility, upon the integrity of ihe spinal cord, we shall not be surprised at the diversity and multiplicity of the symptoms produced by disease of the cord. Tracking inflammation and its events from the upper portion of the spinal marrow downwards, we should expect to find, and we actually do find, some such an arrange- ment of symptoms as the following. Convulsive atfections of the head and face, inarticulate speech, loss of voice, trismus, difficult deglutition, spasmodic breathing, irregular action of the heart, constriction of the chest, vomiting, pain of the belly, sensation of a cord tied round the abdomen, dysuria, retention of urine, incontinence of urine, constipation, tenesmus, involuntary stools : and with respect to the volun- tary muscles corresponding to these parts of the spinal marrow, convulsions, or palsy ; or palsy succeeding to convulsions. I must again have recourse to examples, to put you, more fully than an}'- attempted abstract picture could put you, in possession of such forms of inflammation of the cord as you may expect to meet with in practice. A man, fifty-six years old, was exposed to severe cold, while travelling on the out- side of a coach. After this he Xvas attacked with pain in the right arm and leg, most severe about the shoulder, but affecting the whole side, and he had also considerable headache. He soon perceived some loss of power in the affected hmbs ; and the progress of this was very curious. It began at the upper part of the arm, and extended downwards so gradually, that he w^as able to ivi'ite distinctly, after he had lost the power of raising the arm, or bending the elbow. Then the leg became affected in the same gradual manner, and after ten or twelve days from the com- mencement of the disease, the whole leg and arm had become completely paralytic. Some pain continued in the parts, and it was occasionally severe, especially in the leg. Repeated blood-letting, and purgatives, and blistering, were employed. His mind remained quite entire. His pulse was 84, and rather weak ; after some time the Irfl arm became paralytic, rather suddenly ; but it was not so completely motion- less as the limb on the right side ; the left leg was not at all affected. Slight delirium occurred, but passed off again. At the end of two months after the exposure to the cold, he again became delirious, and his pulse got feebler and rapid : he then fell into a state of stupor, muttering incoherently, but answering questions distincll)"- when he was aroused. He lost his speech a few hours before death. For the last eight or ten daj-s there had been considerable sloughing of the sacrum. The brain was found to be healthy throughout. Much bloody fluid was dischaig^id from the spinal canal into the cavity of the cranium before the spine was laid open. On displaying the spina! cavity itself, the cord was found in a state of complete softening, from the second to the last cervical vertebra. The portions above and below that part were quite healthy. (Abercrombte.) Comparing this case with the one I detailed of meningitis, we find that pain was present in both, but more severely so in the case of inflammation of the membranes ; we find also, that stiffness and spasm of the mitscles markedihe meningitis ; palsy, the inflammation of the substance of the spinal cord. In neither of them were the intellectual functions disturbed till towards the last. I beheve that the character? now pointed out belong to these forms of disease respectively. I shall take, from the same store-house, one more case, in wliich both the mem • z3 296 DISEASES OF THE branes and the cord were simultaneously inflamed ; and which, therefore, was ana logons to encephalitis. And I quote it the rather because it possesses one or two pomts of peculiar interest. A young man, of unhealthy constitution, eighteen years old, had suffered for some time from ulcers in various parts of the body, accompanieH by exfoliations of bone from the leg, thigh, and sacrum. For several months before his fatal attack he had a sore on his head, as big as a shilling, with caries of the bone beneath it. At length he began to complain of pain in the loins, without fever. On the 2d of October this pain had increased ; it was chiefly «eated among the lower dorsal vertebrae, and extended downwards in the course of the ureter, with a fre- quent desire to pass urine. Then the pain descended lower, into the sacrum, and the symptoms referable to the bladder ceased. But soon afterwards pain in the "belly came on, and numbness of the inner sides of the thighs, and retention of urine ; and in two days after this there wexe perfect palsy of both thighs and legs, without loss of feeling, retention of urine, and involuntary stools. He had still some pain in the )ower part of the dorsal region. He died at length, on the Mill of October, having continued quite sensible till about six hours before. There had not been the smallest approach to a renewal of power of the lower extremities, but their sensibility remained. There was palsy, but no ansesthesia. All was quite sound in the brain, except some old thickening of the dura mater in the neighbourhood of the diseased bone. In opening the spinal canal, some purulent matter flowed out, during the. sawing, from about the middle of the dorsal region; and one of the vertebrae at that place was found carious. There was an extensive deposit of flocculent matter, having a purulent appearance, upon the outside of the membranes of the cord. Bloody sanious fluid was discharged from beneath its dura mater, and its pia mater was highly vascular. The substance of the cord was found most extensively disorganized along nearly the whole extent of the dorsal portion. The anterior columns of this part were completely broken down into a soft diffluent pulp ; on the posterior part the cord was more entire. When the cord was taken out, and suspended, it hung together by the posterior columns of the dorsal portion, while the anterior part of it fell off" entirely, in a soft half-fluid state. The parts above and below the diseased portion were quite firm and healthy. The complete palsy in this instance, going along with the destruction of the ante- nor columns ; and the persistence of the sensibility, the posterior columns being comparatively entire ; invest the case with a remarkable degree of interest. We might infer from it that the anterior half of the cord is the channel through which the power to move the hmbs is transmitted, while their sensations are carried along its posterior half; but we are checked from so concluding, by such cases as the one recorded by Mr. Stanley. These apparent inconsistencies may puzzle, hut they ought not to discourage you. That time, and our advancing science, wiU at length explain and reconcile them I cannot doubt. Meanwhile they teach a lesson which many practitioners much need — viz., that it is unphilosophical and unsafe to draw general conclusions from single cases of disease. At the time when these cases were noted, the peculiar reflex properties of the spinal cord were not understood. Henceforward we shah study its diseases from a new point of view, and with a clearer vision. Much may be learned in regard to the effects of inflammation, or any other cause of disorganization, confined to a limited portion of the cord, by observing what takes place in those injuries in which the bones of the vertebral column are broken, or dis- placed. Of course I do not dwell upon these accidents, for they belong to surgery-, but I have seen a good many of them, and watched them with deep interest. The symptoms are much more uniform than when inflammation occurs within the verte- bral canal, independently of external injury; simply because the injury to the cord IS more definite and local. But such cases are very valuable objects of study to the physician. I remember several that occurred when I was a dresser in St. Bartholo- mew's Hosjiita! ; and I will state very briefly the particulars of one, as an exemplar. In the year l>!i20, a man was brought there who had been thrown out of a tilt cart, in consequence of a dray running foul of it. He had pitched upon his head, which •*howed, however, no trace of injury. When picked up, he was found to be power- SPINAL CORD. 297 leys, both in the upper and lower extremities. His stools passed from him without his being- aware of it, and it was necessary to use the catheter to empty his bladder. He breathed entirely by the diaphragm — that is, his thorax was motionless, and his abdomen rose and fell with every alternate act of inspiration and expiration. These symptoms are perfectly distinctive of injury to the cord between the origins of the j.hrenic and intercostal nerves. He suffered pain about the middle part of the neck b<'hind. He went on exceedingly well for four or five days, and then the nurse very foolishly acceded to his recjiiest to be turned on his side, which caused his death in a very tew minutes. This is not the only instance that I have known, in which life has been suddenly extinguished by similar imprudence. The lesson may be useful. There was another patient in the same hospital, who had fractured the cervical por- tion of the spinal column. Among other remedial measures, the surgeon had directed that his head should be shaved. The barber had performed half his task, and was turning, with his hands, the unfortunate man's head into a more con- venient position for completing it, when he suddenly expired. The twist was fatal to him. On the examination of the body of the patient whose case I was mentioning, a very remarkable state of the spinal column was found. The fifth and sixth cervical vertebras were dislocated from each other without any fracture : a thing which has sometimes been pronounced impossible. The articular processes were fairly sepa- rated ; and the vertebrse were also forced asunder by the detachment of one of them from the intervertebral substance. The nervous matter of the cord opposite the point of dislocation was quite soft. There is one very common and distressing consequence of such disease of the spinal marrow as produces paraplegia, not particularly noted in any of the cases which I have related, but always to be looked for. The muscles, by means of which the bladder empties itself, are liable to participate in the palsy ; and then the bladder empties itself no longer. The urine accumulates in it, and distends it, and even the ureter becomes distended ; and in this way not only the present but the prospective danger is increased. For the foundation of future disease in the kidneys is often thus laid, even when such distension of the bladder by its retained contents occurs independently of any disease of the spine ; as it may do from stricture ; from en- largement of the prostate ; or even from the voluntary retention of the urine beyond a certain period, through feelings of delicacy. You are to look out, I say, for this distension of the bladder, and relieve or prevent it by the introduction of a catheter through the urethra. You must not be deceived by being told that the patient passes plenty of water ; that it even runs from him. Incontinence of urine is, in fact, in these cases, though it may sound paradoxical, a sign of retention of urine. The urine dribbles away because the bladder admits of no further distension ; it over- flows and runs out at the natural orifice, but the bladder remains constantly full and stretched. You must make an examination, therefore, of the hypogastric region with your hand. If you find that part of the belly hard and resisting, and giving out a dull sound on percussion, you may be sure, in these cases (where there is para- lysis of the lower extremities, and the water dribbles away), that the bladder is full, and has lost the power of expelling its contents. Sometimes you may recognize the fluctuation of the urine in the distended bladder, and ascertain the globular shape of that organ. It will rise even beyond the umbilicus. But what I chiefly wished to point out to you is the circumstance that the bladder becomes diseased, and the urine altered in quahty, under this state of palsy. The urine becomes thick, ropy, and alkaline, and exhales a very offensive ammoniacal smell; and the inner surface of the bladder is found, after death, to be thickened, red, and covered with adiiesiv© mucus — in a state of chronic inflammation, in short. 298 DISEASES OF THE BRAIN. LECTURE XXVIII. h Inflammatory and Structural Diseases of the Spinal Cord, continued. Treatment. wipopkxy. Its General Symptoms and Diagnosis. Different forms of the attack. Predisposition to ..Apoplexy — Natural, and Accidental. Precursory Symptoms. Allow me to repeat that the structural diseases of the spinal cord will most clearly reveal themselves, by their symptoms, to him who most distinctly perceives, and most accurately bears in mind, the physiology of that part of the nervous system. But to the best informed, and the most sagacious, they are too frequently obscure and perplexing. Disease occupying a portion only of the cord, but affecting the whole thickness of th?.*, portion, from centre to circumference, will be hkely to disturb, or suspend, the functions of sensation and voluntary motion in all the parts supplied with motor or sentient nerves from that portion of the cord, and from the portion beyond it. So that a great variety of symptoms depend, when the amount of disease is the same, upon the place of the disease. A total interruption of the conducting function of the cord, in the neck, above the origin of the phrenic nerves, extinguishes hfe by stop- ping the actions of respiration. A similar intefruption in the cervical part of the cord, above the origin of the intercostals, but below the origin of the phrenic nerves, destroys life as certainl)', but not so rapidly, nor in exactly the same manner. We find the lungs loaded with frothy serous fluid in sqch cases ; we find the bladder inflamed ; and, often, sloughing of the integuments and muscles of the nates and hips. A similar interruption below the dorsal vertebrae is not necessarily fatal, even when it is attended with permanent paralysis : but it usually is so, sooner or later. It is commonly believed that disease affecting the anterior columns only of the cord, will be likely to disturb, or to suspend, the power of voluntary motion in the corresponding parts ; to produce spasm or palsy : and that disease affecting the pos- terior columns alone will be likely to alter or abolish the faculty of sensation in the corresponding parts : to cause pain, tingling, nuinbness or complete amfthesia. But I have mentioned certain facts which contravene this opinion. Suspend your judg- ment respecting it. Neither the minute anatomy nor the physiology belonging to the question is yet conclusively settled. There seems no reason to doubt that disease aflfecting the lateral half only of the cord will be likely to derange both the sensibility and the power of movement, in the corresponding part on the same side of the body alone. If you impress upon your recollection the facts thus summarily stated, you will find in them. I think, a key to many of the phenomena which accompany, and denote, more or less plainly, disease of the spinal marrow. Inflammation of the membruites of the spine is most apt to declare itself h\ pain, mcreased on motion, of the spine and of the limbs ; and by rigidity and spasm of the muscles of the neck and back. Inflammation of the cord itself, which readily passes into, or rather produces, softening of its substance, is most commonly marked, first, with convulsive movements of some parts of the body ; secondly, by palsy of those parts, with or without ansesthesia. The same may be said of suppuration ■when it occurs as an event of inflammation ; and the pus may be collected into an abscess in the nervous matter of the cord, or it may be difl^used and mixed with softening. Now I need not dwell upon the treatment proper to be adopted in inflammation of the spinal cord and its membranes. Mutatis mutandis, it is the treatment already recommenaed in inflammation of the brain and its membranes. When the inflain matioh ]s acute, we must take blood freely ; from the arm, or by cupping-glasses along the sides of the spine. Blood enough may be taken by cupping along this tract to produce the effect of general bleeding as well as of local. Perfect rest in APOPLEXY. 290 the horizontal postu/e must be strictly enjoined Mercury will generally be proper. In more chronic forms of inflammation within the spinal canal, we still have a capital remedy in cupping: and counter-irritation in various ways, but more espe- cially by means of issues made on one or both sides of the spinous ridge, is also, in many cases, of most essential and unquestionable service. Great care must be taken, when there is palsy of the bladder, not only (as T admonished you in the last lecture) that the urine be regularly drawn off, but also that the patient be kept dry and clean: for if great attention be not paid to this point, sores will form where the urine remains in contact w'ith the skin, to the great increase of his suffering, and of his danger. Indeed, take what pains we may, there is gene- rally a strong disposition to the formation of sloughs upon the sacrum and hips in cases of paraplegia. They result from the perpetual pressure made upon those projecting points ; from the feeble state of the circulation in the palsied parts ; and (often) from the irritation of the urine and feces, which are passed without the patient's consciousness. When the patient is kept clean and dry, and the surfaces on which the weight of his body has been supported begin to be red and angry, you may protect them by a plaster: or by rubbing them with brandy you may sometimes prevent the skin from breaking: or, what is best of all, you may put your patient upon one of Dr. Arnott's hydrostatic beds; and then the pressure will be equally distributed over all that portion of the body which comes in contact with the water-proof material of the bed. To bring this outline of the diseased states of the spinal cord up to that point in which we left those of the encephalon, I may state that, like tlie brain, the spinal marrow may become hardened by chronic inflammation ; and, like the brain, it may be encroached upon by tumours ; fibrous, scrofulous, or malignant. With respect to these, all that I can now say likely to be of any practical benefit to you, is that the symptoms they occasion are those of slowly increasing paralysis, without fever or what is called reaction : and that the locality, and extent, and effects of the para- lysis, will vary according to the part of the cord in which these changes occur, and the depth to which they affect it. I proceed, in the next place, to a perfectly distinct class of diseases of the brain and spinal cord ; to the apoplectic afft'Ctions : and especially to cerebral hemorrhage, and spinal hemorrhage. When a person falls down suddenly, and lies without sense or motion, except that his pulse goes on beating, and his breathing continues, he is said to have been attacked with apoplexy. He appears to be in a deep sleep ; but this is not all, for you cannot awaken him by the same means which would rouse a healthy man. He is not in a state of syncope, for his pulse beats, perhaps with unnatural force ; and often his face, instead of being pale, is flushed and turgid ; and his respiration goes on, though it may be laboured and- stertorous. What I now denominate apoplexy, is the very same state which has so frequently been mentioned already in these lec- tures : it is coma occurring suddenly, or coming on (at least) with rapidity. What is coma? it is that condition in which the functions of animal life are suspended, with the exception of the mixed function of respiration ; while the functions of organic life, and especially of the circulation, continue in action. There is neither thought, nor the power of voluntary motion, nor sensation : but the pulmonary branches of the par vagum continue to excite, through the medudla oblongata, the invohmtary movements of the thorax. When this upper part of the cranio-spinal axis becomes involved in the disease, and its reflex power ceases, the breathing ceases also, and the patient is presently dead. It is a common question — how would you distinguish apoplexy from the effects ot a narcotic poison? If you were summoned to a person in the state I have been de- scribing, how could you tell whether he was afllicted with apploplexy, or labouring under the influence of a large dose of opium, or merely dead-drunk? Why, so far as the condition of the cerebral functions is concerned, you cannot discriminate the one from the other. In each case there is profound coma ; but the cause of vhe 300 DISEASES OF THE BRAIN. coma is different in each, and you must seek to ascertain that cause in the history and other circumstances of the patient : you inquire whether he is known to have been drinking, you try if you can perceive the odour of spirits, or of wine, in his breath ; or you endeavour to make out whether he has been low-spirited, or in known difficulties ; in short, whether it is likely that he may have swallowed poison. But from the actual condition of his sensorial functions, you cannot solve the question. Yet let me say, thus in the outset of our remarks upon apoplexy, that it is often /)f great importance that the diagnosis should be determined. A man was found lying in Smithfield in a state of total insensibility, and motionless, except that he still breathed. He was carried into St. Bartholomew's Hospital. The house-surgeon thought he smell the smell of gin in his mouth ; and thereupon very properly made use of the stomach-pump. By means of it he discharged a large quantity of ardent spirit ; and in the course of a few minutes the man revived, shook his ears, and walked away. If the gin had been suffered to remain in his stomach, and if the remedies of apoplexy had been vigorously put in force, the absorption of the poison would have been thereby accelerated ; and the debauch would probably have had a fatal termination. The same remarks apply still more urgently to the case in which opium, or any other strong narcotic poison, is lying in the stomach. Even when there is no great danger, either in the person's state, or in the remedies used for it, it is not a very pleasant or creditable thing to make a false point of this kind. If we do err, however, we had better err on the safe side. The father of the late Professor James Gregory, of Edinburgh, (who used to relate the case in his lectures,) was once called out very late in the evening to visit an old gentleman of that place. He found him in a completely comatose condition ; his wife crying, and his household all plunged in grief and distress. They told him that the patient, whom he now saw in a fit, had come home, and upon the servant's opening the door to him, had fallen into the passage, on his back, in a state of insensibility. Dr. Gregory learned, how- ever, that he had been at the "Club," and he knew well enough that this club was composed of choice spirits, fond of their cups; although the gentleman's wife did not know as much. Therefore he ventured to express his " hopes" to the wife that her husband was drunk : a charitable view of the case, at which she was extremely affronted and indignant. He persisted, however, in his opinion, and not long after- wards the patient began to recover his senses. It turned out that he had partaken more fiberally than the rest of the club, and was the first to be intoxicated. Two of his companions carried him home quite incapable of motion ; but not hking to intro- duce him themselves to his wife in that predicament, they placed him with his back against the door, rang the bell, and decamped. Of course when the servant came to open the door, his master tumbled sense^less on the floor. I need not point out to you the ridicule which the phys'cian would have brought upon himself, and the damage he might have inflicted upon his patient, had he busily apphed, in this case, the ordinary remedies of apoplexy. The state of coma, such as I have described as being characteristic of apoplexy, may terminate in one of three ways. It may cease, more or less rapidly, and leave the patient in perfect health. What is the exact condition of the encephalon during the continuance of the coma, in such cases, no one can positively tell. But the oc- currence of temporary coma, under the influence of a narcotic poison, and the perfect disappearance of the coma as the effects of the drug pass off, teach us that the functions of the brain may be almost totally suspended for a time by causes which do not injure its texture. It is possible that, when there is no poison at work, the coma may depend upon that presumed disturbance of the balance of the arterial and venous circulation within the cranium, which I mentioned in a former lecture. It may be that the force and rapidity of the circulation in the cerebral vessels un- dergo some great alteration. It is still more probable (to my mind) that a temporary Mress upon the cerebral blood-vessels (produced by a determination of blood towards the head, through the arteries, or by a detention of blood in the obstructed veitis) may really exercise pressure enough to cause transient coma. But these are mere conjeciures. In the second place, the apoplectic coma may terminate, more or less quickly, in APOPLEXY. 301 death. And on examining the brain, we may find a large quantity o. extravasated blood; or a considerable effusion of serous fluid in its ventricles, or beneath the arachnoid ; or we may detect no deviation whatever from the healthy structure and natural appearance of the organ. The congestive pressure (if it indeed existed) has left no prints of its action. Fatal coma, without obvious disease in the brain to account for it, results, not un- frequently, from an inbred poison, of which the agency was not recognized until a recent period : the poison of unpurified blood. When speaking of the general pathology of dropsy, I mentioned a peculiar renal disease — first detected and described by our distinguished countryman, Dr. Richard Bright — which unfits the kidney for what is probably its most important office ; that of removing urea from the system. When this excrement, thus retained, accumulates in the blood beyond a certain amount, it is very apt, among other injurious tendencies, to cause death in the way of coma. Dr. Abercrombie has given to that form of apoplexy, which destroys life, but leaves no traces behind it, the name of simple apoplexy. And this name, for its convenience I shall retain. Of the other two kinds of quickly fatal apoplexy, that in which blood is found extravasated, is more common than that in which there is effusion of serum only. The one has been called sanguineous apoplexy ; a better term is cerebral hemorrhage : the other has been named serous apoplexy. Thirdly, the apoplectic coma may terminate in partial or imperfect recovery. One or all of the cerebral functions may be left impaired ; the mind enfeebled ; the power of motion limited or lost in some parts of the frame ; the faculty of sensation benumbed or extinguished : the unhappy subject of the attack remaining more or ■ ess crippled in body, and more or less maimed in intellect. In these cases, when at {englh we have an opportunity of examining the brain, we almost always find that there has been extravasation of blood, to a small or moderate extent. I say almost always, because I have myself, in more than one instance, carefully looked for such appearances, after such a series of symptoms., without finding them. Oc- casionally, instead of a clot of blood, we meet with circumscribed softening of the brain. The attack of apoplexy does not always occur in the same manner : and Dr. Abercrombie has pointed out three several ways in which it is apt to come on. 1 am confident, from the result of my own observation, that the distinctions laid down by Dr. Abercrombie are just and true ; and it is of importance that you should be aware of them. " In the first form of the attack, the patient falls down suddenly deprived of sense and motion, and lies like a person in a deep sleep ; his face generally flushed, his breathing stertorous, his pulse full and not frequent, sometimes below the natural standard. In some of these cases convulsions occur ; in others, rigidity and contraction of the muscles of the limbs, sometimes on one side only." Now, respecting persons seen in this condition, the immediate prognosis is un- certain. Some die in a short time, and much blood is found extravasated within the cranium. Some die after a rather longer interval, and then we often find serous effusion only, and that of no great amount. And in some that die early, no effusion either of blood or of serum can be detected. Some recover altogether, without any ill effect of the attack remaining. Others recover from the coma, but are left para- lytic of one side, and with some imperfection of speech, or of one or more of the senses. And this paralysis and imperfection may disappear in a few days, or gra- dually subside, or remain for life. In the second form of the attack, the coma is not the earliest symptom. The dis- ease generally begins with a sudden attack of pain in the head. The patient becomes pale, faint, and sick, and usually vomits ; and sometimes, but not always, falls down in a slate of syncope, or resembling syncope, with a bloodless and cold skin, and a feeble pulse. This also is occasionally accompanied by some degree of convulsion. Sometimes he does not fall down, the sudden attack of pain being accompanied only by slight and transient confusion. In either case, he commonly recovers in a short time from these symptoms, and is quite sensible, and able ii.» 2a 302 DISEASES OF THE BRAIN. walk ; but the headache does not leave him. After a certain interval, which may vary from a few minutes to several hours — and Dr. Abercrombie records cases in which it was even much longer — the patient becomes heavy, forgetful, incoherent, and sinks into coma, from which he never rises again. In some instances, paralysis of one side occurs ; but perhaps more often, there is no palsy observed. The disease, when it comes on in this way, is much more uniform, and of much worse omen, than when it commences after the former fashion. It is of great use to know this ; for to an inexperienced eye the cases do not seem so terrible as those in which the patient becomes profoundly comatose from the very first. The appa- rent amendment is fallacious, and apt to lead one into giving a false prognosis. Very few persons come out of the coma, and a large quantity of blood is usually found extravasated in the brain. These cases are not, as Dr. Abercrombie well observes, apoplectic in the outset. They differ remarkably from the first set of cases. If there be at the ver}^ beginning some loss of sense or motion, it goes off again in a very few minutes, or perhaps in a few seconds : the prominent symptom, at the commencement, is sudden and violent pain in the head, with faintness, sickness, anci often with vomiting. The pain continues, and is sometimes confined to one side of the head ; the face is pale and ghastly, the pulse weak, and often frequent or irregular ; but the patient is quite conscious, and in full possession of his intellect. At length he recovers his natural temperature, his countenance improves, and the pulse becomes stronger and steadier : then his face gets flushed, he feels oppressed, answers ques- tions slowly, and at last sinks into stupor and fatal coma. The period between the first attack and the commencement of the coma is variable. Sometimes the stupor succeeds the pain and faintness so rapidly, that the case comes greatly to resemble those in which coma is the first symptom, and takes place suddenly ; but still a short period of sense, commonly with complaint of great pain, may be observed. But the interval may be a quarter of an hour, or many hours, or even two or three days. " Upon inspection,", says Dr. Abercrombie, " we find none of those varieties and ambiguities, which occur in the apoplectic cases, but uniform and extensive extra- vasation of blood." [I should state that he calls the first class of ca^es apoplectic cases, the coma being present from the first : and the second class, which we are now considering, he calls cases not primarily apoplectic.'] The symptoms in this form of attack depend, no doubt, upon the giving way of some one of the cerebral vessels. At the moment when the vessel is ruptured, a shock is given to the brain ; a temporary derangement of its functions occurs ; but this passes off. The circu- lation then goes on as before, until such a quantity of blood has escaped from the ruptured vessel as is sufficient to produce coma. There is no part of Dr. Aber- crombie's book more admirable and clearly put than that which is occupied with these important distinctions, which I give you very much in his own words. He points out the close analogy which exists between this variety of apoplexy, and the result of external injuries, when they occasion extravasation of blood on the surface of the brain. The hurt person recovers from the immediate effects of the accident, walks home perhaps, and after some time becomes stupid, and at last comatose. The surgeon trephines the skull, and discovers blood upon the dura mater; and the blood being removed, the coma goes off. We cannot help our patients by a similar expedient; though the opinion has been broached that trepanning the skull will, at some future period, be a common practice in apoplexy. Dr. Abercrombie conjec- tures that after the rupture has taken place, the hemorrhage is sometimes stopt by the formation of a clot at the orifice in the vessel, but at length the blood bursts out again, and proves fatal. He relates two cases in which this probably happened ; in one of them an interval of three days, and in the other an interval of a fortnight, elapsed between tiie first attack, and the supervention of coma. The portions of blood extravasated at the two distinct periods may sometimes be distinguished by their appearance — their colour and consistence. The third form of attack is characterized by sudden loss of power on one side of the body, and frequently by loss of speech, without loss of consciousness ; or at most with a very temporary suspension of consciousness. The patient is sensible, listens to and comprehends your questions, and answers them as well as he is able, either APOPLEXY. 303 oy words, which in most cases he articulates imperfectly, or by gestures The further progress of the cases that commence in this way is marked by considerable variety. Sometimes the hemiplegia passes gradually in a short time into apoplexy. Sometimes the patient soon gets well, the palsy leaving him entirely. Or a gradual recovery takes place, which is not complete for some weeks or months. Or the patient rallies up to a certain point, and there the improvement stops ; he regains the power of moving his leg, but it drags somewhat after him ; or the leg recovers, but the arm remains feeble, or his speech continues to be inarticulate. And in another variety of this form the patient neither improves on the one hand, nor becomes apo- plectic on the other, but is confined to his bed, paralytic, and perhaps speechless, though in possession of his faculties in other respects, and dies at last worn out and exhausted, some weeks, or months it may be, after the attack. In the outset of these cases there is not always complete hemiplegia, sometimes the arm only is affected, sometimes (but much more rarely) the leg only. Or some other voluntary muscles are the first to lose their power. Now the appearances discovered after death, in cases that have thus commenced (Dr. Abercrombie calls them the class of paralytic cases), are, as in the apoplectic cases, inconstant. Much the most common of all — according to my own experience — is the extravasation of blood, to a moderate or small amount, and definite extent, in the substance of the brain. But sometimes nothing is found, upon dissection, to account for the symptoms, or slight serous effusion only. The same symptoms attend some cases of softening of the brain also ; or inflammation and its consequences. In a vast majority of cases, I repeat, this sudden hemiplegia inarks an attack of cerebral hemorrhage. You will not find that all cases of apoplexy commence exactly in the one or the other of the three ways which I have been describing. But most attacks range themselves in one of these classes, and by attending to the points of distinction, I make no doubt that you will often derive much assistance from them in regard to diagnosis and prognosis ; and that the distinctions themselves will give a higher inte- rest to your study of this complaint, than it would possess if all the forms of attack were jumbled together in one common description. In treating of this large subject, this multiform disease, the main points will best be made intelligible by my breaking what I have to say into separate heads. I have told you the different ways in which the disease may make its assault. I will next say something of the persons who are most liable, cseieris paribus, to attacks of apoplexy : and afterwards of the symptoms which in many cases, though not in all, precede the seizure, and lead us to fear that it may be impending. It is of great importance to attend to these threatenings ; for, as you will readily conceive, the chief good that medicine can do in such cases, is in the way of prevention. After the attack has taken place, the effect of our treatment must be very uncertain. A large effusion of blood upon the brain will be fatal in spite of us : and a smaller amount of extravasation we cannot remove ; and the best that the patient can expect in too many cases, is long-continued or permanent palsy, a weakening of the mental powers, and sometimes a state nearly approaching to idiocy. Also, when once an apoplectic fit has happened, it is the more likely, on that very account, to happen again. These are quite sufficient reasons why we should not neglect the warnings ; the symptoms which are apt to precede and herald the attack of apoplexy. The classes of persons in whom, cseteris paribus, attacks of apoplexy are espe- cially to be apprehended, are those whose ancestors have suffered the same disease ; those who possess a particular conformation of body ; and, above all, those who have reached a certain period of life. No doubt apoplexy may and does occur in persons whose progenitors have escaped it ; in persons of every conceivable snape and make ; and in persons of all ages. But it is much more frequent in the classes I have specified, than it is among persons not comprehended in those classes. The first and second class sometimes concur, ?". e., a particular conformation of the body is transmitted from parent to child, and with it is transmitted a proclivity to apoplectic disease. But even when there is nothing particular in their bodily form. or in their habits of life, practical men of large experience declare that they who 304 DISEASES OF THE BRAIN. come of an apoplectic stock are themselves more than ordinarily liable to apo- plexy. _ The pattern of body which is most prone to apoplexy is denoted by a large head and red face, shortness and thickness of the neck, and a short, stout, squat build. This remark is as old as the time of Hippocrates. However, apoplexy is common enough in men and women who are thin, and pale, and tall. Ceteris paribus, cor- pulent people are more in danger of apoplexy than spare people ; but it attacks both the one and the other. Advanced life is certainly a very strong predisposing cause, and the reason of this will be apparent when we come to inquire more particularly into the morbid appear- ances presented after death by apoplexy. The disease begins to be common after 50: but it does sometimes occur even in young children. I am speaking principally of that form of apoplexy which depends upon cerebral hemorrhage, which is by far the most frequent of all its forms. Of sixty-three examples of cerebral hemorrhage, collected and carefully examined by Rochoux (who has written a very good treatise on this affection), two only hap- pened between the ages of 20 and 30 ; eight between 30 and 40 ; seven between 40 and 50 ; ten between 50 and 00 ; twenty-three (or more than one-third of the whole) between 60 and 70 ; twelve between 70 and 80 : and one between 80 and 90. To analyze this table a httle further : it appears that of the sixty-three casss seventeen only took place before 50 ; forty-six after that age. There are also twice as many victims to the disease between the ages of 60 and 70, as between 70 a^d 80. And from this fact Rochoux has drawn, I conceive, an erroneous conclusioKi ; and I mention it that, in case his treatise falls in your way, j'ou may not be led by it into what I imagine would be a mistake. There being twenty-three cases between the ages of 60 and 70, and only twelve between the ages of 70 and 80, Rochoux infers from this that the disposition to cerebral hemorrhage decreases after the age of 70 ; which would be a most unaccountable thing, and quite inconsistent with what I believe to be the true pathology of the disease. But I make no doubt that the difference in the actual numbers observed in these two decennial periods de- pended upon the number of persons alive, at the same time, of the ages of 60 and 70 respectively. There are always more persons living whose age ranges from 60 to 70, than from 70 to 80 ; and therefore more persons die of apoplexy in the former period. In all probability, if the exact truth could be ascertained, of a given number of persons, there are more attacked with apoplexy between 70 and 80 than between 60 and 70. All these three kinds of predisposition are beyond our power. We cannot exter- minate the hereditaiy tendency ; nor remodel the plan upon which the body is con- structed ; nor arrest, or put back, the clockwork of human life. But we may guard and caution persons, thus predisposed by nature towards apoplexy, against many of its exciting causes. A strong predisposition to apoplexy is, moreover, engendered by certain other diseased conditions ; and over some of these conditions our art enables us to exercise more or less control. One of these I referred to just now — the kidney disease discoverea by Dr. Bright. Disease of the cerebral blood-vessels is a very common and a ver}' pregnant cir- cumstance of predisposition. I shall revert to this when I describe more particularly the anatomical characters af cerebral hemorrhage. Diseases of the chest influence very materially and injuriously the circulation in the head. Without going into detail respecting complaints with wliich I am obliged to suppose that you are as yet unacquainted, I may state, by anticipation, that impe- diments to the free transmission of blood through the heart and lungs constitute the mode in which thoracic disorders predispose to apoplexy. The pletliora capitis produced by such impediments is frequently visible in the turgid and livid features, and in the distended jutrular veins. The cessation of habitual discharges, of the catamenia, of bleeding piles ; the drying up of old sores ; the heaHng of long established issues and setons ; all have APOPLEXY. 305 an unquestionable tendency, by causing or augmenting plethora, to generate a pre- disposition to apoplexy. And large observation of the habits of those who fall victinas to this terrible ma- lady, leaves no room for doubting that intemperance often paves the way for its inva- sion. The continued abuse of ardent spirits, in particular, lays the foundation of many of those morbid conditions of the sanguiferous system, and of the viscera, which constitute the predisposition we are now considering. Among the premonitory symptoms, headache is of frequent occurrence : but the same symptom is abundantly common in persons who are in no danger of apoplexy : it derives its minatory character from the concurrent circumstances. Headaches awaken our fears when they begin to be troublesome in advanced life. They are, then, still more formidable if they are accompanied by vertigo; or, without any other evidence of gastric derangement, by nausea and retching. Sometimes, as I just now told you, severe headache ushers in, and almost forms a part of the apo- plectic attack. Vertigo itself, even without headache, is a very common precursor or warnmg of an approaching seizure. It is sometimes slight and transient ; sometimes almost habitual. Although vertigo may depend upon other causes than mischief within the head, we cannot regard it without apprehension when it often occurs in old persons. It should teach us to obviate as entirely as we can all the known exciting causes of apoplexy. The principle of these I shall by-and-by describe to you. Transient deafness, or transient blindness, blindness or deafness for a few seconds or minutes, is another of these warning symptoms. The late Dr. Gregory, of Edin- burgh, used always to mention in his lectures the case of Dr. Adam Ferguson, the celebrated historian, as affording one of the strongest illustrations he ever met with of the benefit that may be derived from timely attention to the avoidance of those circumstances which tend to produce plethora and apoplexy. It is, perhaps, the most strikmg case of the kind on record. Dr. Ferguson experienced several attacks of temporary blindness some time before he had a stroke of palsy ; and he did not take these hints so readily as he should have done. He observed that while he was deiivering a lecture, his class, and the papers before him would disappear, vanish from his sight, and reappear again in a few seconds. He was a man of full habit ; at one lime corpulent and very ruddy, and, though by no means intemperate, he lived fully. 1 say he did not attend to these admonitions; and at length, in the sixtieth year of his age, he suffered a decided shock of paralysis. He recovered, however, and from that period, under the advice of his friend. Dr. Black, became a strict Pythagorean in his diet, eating nothing but vegetables, and drinking only water or milk. He got rid of every paralytic symptom, became even robust and muscular for a man of his time of life, and died in full possession of his mental faculties at the advanced age of n inety -three : upwards of thirty years after his first attack. Sir Walter Scott describes him as having been, " long after his eightieth year, one ot the most striking old men it was possible to look at. His firm step and ruddy cheek contrasted agreeably and unexpectedly with his silver locks ; and the dress which he usually wore, much resembling that of the Flemish peasant, gave an air of peculi- arity to his whole figure. In his conversation, the mixture of original thinking with high moral feeling and extensive learning, his love of country, contempt of luxury, and especially the strong subjection of his passions and feelings to the dominion of his reason, made him, perhaps, the most striking example of the Stoic philosophei which could be seen in modern days." This anecdote, which I have made use of as a wrapper for some medical instru*. tion, will not be the less acceptable to you when I add that the remarkable man to whom it relates was the great-uncle of my friend and present colleague in this school. Dr. Robert Ferguson. Very frequently slight and partial paralysis is the forerunner of an attack of apo- plexy- Double vision is one form in which such hmited palsy is apt to show itself. It is evidently connected with some degree of squinting; i. e., some one or more of the muscles that move the eyeball are paralyzed ; the person cannot direct each eye to the same object at the same time. This is a very suspicious symptom. Dr 20 2a2 306 DISEASES OF THE BRAIN. Gregory was acquainted with a sportsman who one day, when out shooting, disputed with his gamekeeper as to the number of dogs they had in the field. He asked how he came to bring so many as eight dogs with him. The servant assured him there were but four; and then the gentleman became at once aware of his situation, mounted his horse and rode home. He had not been long in the house when he was attacked with apoplexy, and died. Sometimes the slight and local paralysis shows itself in a faltering or inarticulate mode of speaking. The rapidity of the movements of the tongue requisite for dis- tinct utterance is so great, that the slightest weakness of any one of its muschs is rendered obvious. We see this in one very comition form of what may in truth be considered a kind of apoplexy ; viz., in drunkenness. In many persons the very- first symptom of their becoming intoxicated is their inability to speak plainly. " Clip- ping the King's Enghsh " is the slang expression for it ; and the same thing often takes place in respect to the more proper forms of apoplexy. It is a curious circumstance, by the way, and one which is illustrative of what we meet with in disease, that different sets of muscles are chiefly aflected by inebri- ation in different persons ; the same sets being always the first afTected in the same persons. Thus, some men, when drunk, lose (as I have just stated) the proper command over the muscles of the tongue, and falter in speech, while they can walk very well : others reel and stagger, having lost, in a greater or less degree, the power of moving and governing their limbs, and of balancing themselves, who yet can speak quite fluently and plainly: and in a few cases, drunken persons become delirious, who still retain the power of distinct articulation, and of directing their steps aright. This being so, we need the less wonder at the variety in the nature of the warnings that precede the apoplectic attack. In many instances there is numbness or debility, or total palsy of one limb, or of a single finger, or even of a sohtary muscle, as of the levator palpebrse. The patient cannot grasp your hand with firmness, or sign his name in his usual way, or pick up a pin, or snuff a candle, or manage an obstinate button, or tie a knot in a thread cleverly : or, perhaps, one of his eyelids droops, and the eye is half closed. Some- times, on the contrary, the patient stares at you, friglxlfully, w^ith one eye, which he cannot shut. The numbness also assumes various characters, according to its place and degree. One patient will tell you that he feels as if his limbs were muffled in flannel; ano- ther, that he is uncertain whether, in walking, his foot has reached the ground or not. A gentleman, since dead of apoplexy, assured me that, when sitting, he did not know how far his breech covered the seat of the chair. All these symptoms are modifications of the function of voluntary motion ; or of the function of sensation. Nor are manifestations wanting, among these precursory circumstances, of a derangement of the other and nobler function, of which the brain and nervous system form the material instrument. I mean the function o^ thought. Thus one very deplorable warning is the loss of memory. All persons find, as ■.hey grow older, that they do not retain so tenaciously in their recollection things which have recently occurred, as things which happened when they were youno-. This partly depends upon the degree of atteniion which we pay to different circum- stances. Those events which strongly excite the curiosity, and rivet the attention of the boy, become familiar to the man, and he gives them but little notice, and is very apt to forget them. But the loss of memory that threatens apoplexy is some- thing more than this. It is sometimes partial, and extends to certain sets of things (•nly. For example, some p-^rsons entirely forget certain words, while they recollect others perfectly. Common words are often thus forgotten, while unusual or remark- able words are remembered ; or a wrong word is chosen. One w-ord is used for another that sounds something like it. Thus one of my patients, meaning to accuse a certain individual o[ perjury, always called it purging: and many other words he changed after the same fashion. But in truth the modifications of a partial loss of memory that have been known to precede apoplexy are both odd and endless : some people forget their own names, or the names of their children. Dr. Gregory, who u^d paid particular attention to these precursory symptoms, and who had a large APOPLEXY. 307 practice foi a great number of years to furnish them, used to mention a case of this kind. After some efforts his patient could recalJ to his recollection what his Chris' tian name was, but he could not think of his surname. About twelve months after his memory began to fail in this strange manner, he was found dead in his bed. Another gentleman, for some time before his death, could never recollect the name of the street in which he lived. Upon one occasion of his visiting Edinburgh, he called on Dr. Gregory, and partook of a hearty breakfast, having forgotten that he had breakfasted before he came out. On the same day he attended, with Dr. Gre- gory, the funeral of a young lady who had been his ward ; the funeral took place in the country ; and when they returned together in the carriage, the doctor found that his friend had forgotten all that he had been doing. Next day he met him in the street, and saluted him with all the kindness of an old acquaintance at first meeting; saying he was happy to have flillen in with him now that he was in town, and totally forgetful of their former interviews. Connected with this failure of memory, there is often an unnatural degree of drowsiness. Sometimes, without any permanent affection of the memory, there is a temporary confusion or suspension of thought ; the patient suddenly loses the train of ideas in which his mind had been occupied ; stops short in the middle of a sen- tence, and endeavours, in vain, to recover the broken thread of his discourse. Among the mental conditions that bespeak a tendency to apoplectic disease, I have several times noticed a strange and vague dread, of which the person can give no reasonable explanation ; a sense of apprehension and insecurity not accounted for by the apparent state of his general powers and functions ; a painful degree of indecision and irritability ; with a dislike and fear of being left alone. One patient of mine described his " nervousness" of this kind, by telling me that in descending a staircase, especially a winding one, he was obliged to turn round, and come down backwards, as one descends a ladder ; or even to sit down, and so sHp, stair by stair, from the top to the bottom. Yet with the assurance given him by a friend's arm, or by a convenient baluster, he could walk down stairs without difficulty. He had no actual vertigo. I say, all these, and many other signs that indicate a disposition to apoplexy, are well worth j^our study ; because a knowledge of them may enable you to ward off the threatened attack by medicine, by regimen, and by admonition to the patient on the subject of such exciting causes of the disease as are within his own control. They show that, even before the stroke descends, there is some morbid process going on within the head. LECTURE XXIX. Apoplexy continued. Symptoms characterizing the Apoplectic State. Pressure the ordinary Physical Cause. Hem,iplegia. Affection of Involuntary Muscles. Anatomical Characters. Situation of the Clot of Blood. Disease of the Cere- bral Blood-Vessels. We were engaged with the subject of apoplexy. I requested your particular attention to the three-fold mode in which that fearful disorder has been observed to make its attack. In the first, the coma is sudden and deep ; the condition of the patient, thus struck in an instant senseless and motionless, warranting those epithets which the ancients applied to the victims of this disease, of attoniti and siderati, as if they were thunder-smitten or planet-struck. In the second form of the attack, the earliest symptom is acute pain of the head, with sickness and faintness ; the coma supervening usually in no long time. The third form is ushered in by sudden hemipl?gia, which may or may not lead to loss of consciousness or stupor. The cases which range themselves under the one or the other of these three forms of attack are called respectively, by Dr. Abercrombie, apoplectic cases; cases not p^'i 308 DISEASES OF THE BRAIN. marily apoplectic ; and paralytic cases : and so as you bear in mind what these terms really imply, they appear unobjectionable. I next pointed out the classes of persons in whom an attack of apoplexy is chiefly to be apprehended : those, namely, in whose famihes that disease has been known to be common: those who have large heads, thick necks, red faces, square shoul- ders, and a short stature ; although persons of quite the opposite configuration are by no means exempt from it : and lastly, and above all, those who have passed the middle period of life, and are advancing towards old age : and more particularly is apoplexy to be apprehended in people of this description when they have already suffered what are called head symptoms ; which symptoms have reference to the three great functions of the brain and nervous system : voluntary motion, sensation, and thought. Such symptoms consist, therefore, in slight and often transient para- lytic aflections, double vision, a dropping of one eyelid, occasional inarticulate speech, weakness, perhaps, of a single finger: headache, giddiness, unnatural sounds in the ears, numbness or tingling of the extremities, which last are all modifications of sen- sibility : some impairment of the intellect, shown most commonly bj^ partial and strange defects of memory, and temporary confusion of thought. When several or any of these symptoms occur, and especially when they become habitual in persons in the decline of life, we have reason to dread the supervention of apoplexy ; and to exhort and protect our patients against its ascertained exciting causes. When the apoplectic state is fully formed, in what manner soever the attack may have commenced, it is marked by most or all of the following circumstances. The patient lies totally unconscious of all that may be going on about him. He rephes to no questions, he is unmoved by the cries and lamentations of his family ; in fact, he does not hear them. His pulse is infrequent, often full, perhaps intermitting. His breathing is peculiar, being slow, sometimes interrupted or irregular, attended with snoring or stertor during inspiration, and a puffing out of the cheeks, like the action of one who smokes a pipe, during e:rpiration. Both these peculiarities are referable to the same principle, and both denote a profound sensibility to all external impressions. There is no longer any voluntary attempt to breathe, yet the involun- tary movements of respiration subsist: the medulla oblongata still responds to the impressions which reach it from the lungs and from the skin, still prompts contraction of the muscles that enlarge the capacity of the thorax ; but the loose curtain of the palate, and the fips and cheeks, are passive. By the vibrations of the one the stertor is occasioned ; the mouth is closed by the mere elasticity of the others, and the flaccid cheeks flap outwards with the explosion of the air, as it escapes when the chest again collapses. The countenance is frequently turgid, and livid ; the blood which tinges It is already but half arterialized ; the pupils are commoni}' contracted. The limba lie motionless : either they are all absolutely palsied ; or (what probably is often the case) the capacity of motion remaining, the 7vill to move them is wanting. If you raise one of them it falls passively down again, when you leave hold of it, hke a dead limb. Sometimes, however, they are rigid and stiff". Sometimes one is stiff, and the others limber. And sometimes one or more of them, or those of one side, tremble, or are distinctly convulsed. You find perhaps that the patient is unable to swallow. If you put fluids into his mouth, they appear to choke him, or they run out again at the corners of his lips. His bowels are usually torpid ; but if they act, the evacua tions are passed in the bed without his knowledge or concern. His urine also flows involuntarily ; or is retained in the distended bladder until it fairly overflows, and dribbles away perpetually. When the attack terminates in death, that event is preceded, I believe in almost every case, by profuse perspiration, which bursts forth from every part of the surface and is often cold and clammy. The pupils are sometimes at this period dilated : and I have more than once seen them of unequal size. The pulse becomes more fre quent, the breathing more rare, and at last it ceases altogether. In this description you will perceive that something more is included than pure coma. The absence of consciousness — implying the suspension of thought, of sen- sation, and of volition — marks plainly the afl^ection of the cerebrum. The symptoms which diversify the apoplectic state, and distinguish one case of the disease from APOPLEXY. 309 another, proceed from an associated or consecutive affection of the spinal cord. There may, indeed, be merely coma ; profound and invincible sopor only. In this condition a morsel of food, or a spoonful of drink, passed far back into the pharynx, is instantly carried onwards by an act of deglutition : the excrements are duly retained, and duly voided : the limbs are simply passive and motionless ; neither stiff, nor convulsed. But in the severe cases, inabihty to swallow, laxity of the sphincters, spasms, rigidity, tremors of the voluntary muscles — more or fewer of these adjuncts to the coma — are very apt to present themselves : and they denote, I say, the direct or indirect extension of the morbid influence on which the apoplexy depends, to the cranio-spinal axis. An easy and interesting criterion of the degree in which the reflex apparatus may be concerned has been pointed out by Dr. Hall. The orbicularis is the sphincter muscle of the eyelid. Touch the eyelashes, and the lids involuntarily close ; even during sleep the movements of the shut lids are apparent. If, in apoplexy, they do not respond to this mechanical stimulus, we know that the true spinal functions are gravely implicated. On the other hand, many of the morbid phenomena just mentioned may occur, without any affection, from first to last, of the intelligence. But to these forms of disease, although the nature of their exciting cause may be the same, the term apoplexy cannot properly be apphed. This state, so appalling and painful to look upon, but fortunately so devoid of suffering for the patient — this suspension of the functions of animal life — depends, we have reason to believe, upon pressure applied to the brain, the oi^an subservient to those functions. That excess of pressure is a vera causa is obvious, and that it is adequate to the production of coma is capable of demonstrative proof. It is not enough to show that they often exist together, for the coincidence must be casual. Neither does their occasional disjunction, real or apparent, furnish any conclusive argument against the general proposition, that coma, in many and in most cases, is the result of pressure upon the encephalon. Coma may exist without pressure. In other words, coma acknowledges other causes also, besides pressure. It is produced by many narcotic poisons ; by the cir- culation of venous blood through the arteries. In these cases we have no proof of any compression of the cerebral substance. The other disjunctive condition is much more puzzling, and has led some persons to question or deny the general proposition. Can there be unnatural pressure, yet no coma? It would seem so. Serum,'pus, blood, have been met with in the brain, foreign matters have penetrated the cranium, and coma has not occurred. The force of this difficulty is lessened by the consideration that foreign substances may be present within the skull, without occasioning any preternatural degree of pressure. We read of bullets being carried about for some time in the brain. In such instances it is probable that a portion of the contents of the skull was forced out at the time of the injury ; or that coma has come on, and gone off again, in conse- quence of the gradual absorption of the cerebral matter to make room for the foreign body. The same explanation may be applied to the chronic accumulation of water within the cranium, and to the slow growth of tumours. Further, it is open to conjecture that it is not on every part of the brain that the same degree of pressure made will produce the effect ascribed to it. It is stated in Mr. Mayo's Physiology, as the result of actual experiments on animals, that lateral pressure against the hemispheres of the brain produces no observable ill conse- quence ; but that vertical pressure, pressure downwards, occasions stupor, " which is attributable to the compression of the medulla oblongata." Now it is obvious that some injuries of the brain may tend more than others to cause pressure in that direction. I confess that the difficulty is not wholly relieved by these considerations. But it is a difficulty which cannot invalidate the evidence of numerous facts that attest the agency of pressure, as, at least, one cause of coma. The presumption of such agency arises whenever coma immediately succeeds to pressure ; and it .3 converted 310 DISEASES OF THE BRAIN. into certainty if, upon the removal of the pressure, the coma immediately departs Now the annals of physic are full of instances of this kind. In experiments upon animals, stupor has been brought on, and made to cease, at the pleasure of the ope- rator, by applying pressure to the exposed brain, and by remitting that pressure. Na)', the experiment has been tried on the human brain itself. A man wno had undergone the operation of trepanning, and had recovered, was in the habit of exhibit- ing himself for money in Paris, where Haller saw him. He suffered the spectators to make pressure upon his brain, where it was covered b}'' the integuments only. This always put him into a state of coma or deep sleep ; but sensibility and tiie power of voluntary motion returned at once when the pressure was taken off. A most remarkable example of the occurrence of coma from pressure upon the brain, and of the removal of the coma by removing the pressure, was afforded by a patient who was in St. Thomas's Hospital under the care of Mr. Cline. Mr. Green, who Avas Mr. Chne's nephew, was in the habit of relating the case in his lectures here. It is quite pertinent to my present purpose. One of Mr. Cline's apprentices was visiting the depot at Deptford, and discovered there a man who had been for some time in a state of unconsciousness : and he had him removed to St. Thomas's. His main symptoms were apparent insensibility to all surrounding objects, and a total incapacity to make any communication to those about him ; except that his attendants learned to infer, from certain instinctive movements or gestures, that he felt hunger, or thirst, or a want to reUeve his bowels. His fingers were permanently bent towards the palm of the hand, and his eyes were turned upwards, so that the corneas were completely concealed beneath the upper lids. Upon examining this man's head, Mr. Cline found that there had been fracture with depressure of one of the parietal bones. He trepanned that part, and elevated the bone. The patient seemed to feel the operation ; and as soon as it was con- cluded, his eyes and fingers were restored to their natural position. On the evening of the same da\% he sat up in bed, and though at first stupid and incoherent, soon became rational and well. When he had entirely recovered his senses, it was ascertained that the last thing he remembered was his serving on board a vessel which made a capture off Minorca. He was wounded in the engagement, -and carried afterwards to the hospital at Gib- raltar. All this happened upwards of twelve months before the operation. So that one whole year of this patient's life was a complete blank, because during that period, a httle piece of bone was pressing upon his brain. Cases of this kind show very convincingly, the connection that subsists between pressure on the brain and coma, and their relation to each other as cause and effect. The pressure and the coma begin together ; the coma continues as long as the pres- sure continues ; and it ceases when the pressure is removed. The old definition of the cause of a morbid condition is completely satisfied : " Prtesens morbum facit, mutata mutat, sublata toUit." From this digression — not altogether foreign to our subject — I return to the consi- deration of the pathology of apoplexy. If the patient recovers from the coma, he may live a few hours, or days, or he may live for many years. Sometimes, as the coma departs, all the natural functions are gradually restored ; but much more commonly paralysis remains. You already know that it is apt to affect one moiety of the body only. If a line be drawn from the vertex to the perineum, dividing the body into two halves, which, as far as the exterior is concerned, are symmetrical, all the voluntary muscles that lie on one side will be found powerless ; or if they are not all so, those which are palsied are situated on the same side of the line. And this state of things is called hcmipl(2;ia. Paraplegia, that condition in which all the parts below a tranverse line are palsied, though it sometimes results from cerebral disease, is much more commonly the con- sequence of mischief in the spine. Now, of this hemiplegia, when it is complete, there are several particulars worthy of your notice ; and there are many things worthy of your notice when it is incom- plete. But we will take one of these predicaments at a time. By complete hemi- plegia, I mean palsy of all the voluntary muscles of one side. The patient may APOPLEXY. Sii ivill the motion of his leg, or arm, but they no longer obey the act of volition ; if they are lifted by anotlier, and then let go, they drop down like logs of wood. You will find that, in well-marked cases, the intercostal muscles of the palsied side do not contract. The muscles of the face, also, are some of them inert on the same side. I have known many persons who have thought that the muscles of the face, in hemiplegia, when they were affected at all, were affected on the opposite side of the body from that to which the palsied limbs belonged. But they never could have examined actual cases of hemiplegia with any attention. How the error arose I cannot tell, but I have known a professed anatomist make it. I guess that it may have arisen from one of two causes. An anatomist who had not looked closely upon disease, would expect, and not unnaturally, that the face and limbs v/ould be affected on opposite sides of the body, seeing that the nerves w'hich supply the muscles of the face are given off above the place where those fasciculi of nervous matter which are called the anterior pyramids, decussate each other. And a common observer, who was not an anatomist, would be apt to conclude that the side towards which the mouth was drawn was the affected side : whereas it is just the reverse. The face is drawn to the healthy side, because the muscles on that side are no longer counter- acted and balanced by the corresponding muscles of the palsied side. The blank half of the face is that wliich answers to the paralyzed limbs. On that side the patient cannot frown, or smile. He presents a singular spectacle, which I do not dwell upon now, because I shall return to it again when I have to speak of certain important varieties of local palsy. What I wish you to bear in mind at present is, that when the muscles of the face are affected in hemiplegia, the ride is that they are palsied on the same side with the limbs. But there is no rule, they say, without an exception : certainl}'- the exceptions to this rule are very uncommon. I have not had leisure to look over the records of the very many cases of this disease which my position as physician to an hospital has brought under my observation ; but I do not recollect more than two exceptions : and one of them, as it happens, is now exhibited ' in the person of one of my patients in the Middlesex Hospital. Some of you have seen the woman. It is a well-marked exception : but in this instance the hemiplegia followed a blow on the head, and I suspect that a double injury was inflicted ; that the palsy of the face results from mischief on one side of the brain, and the palsy of the limbs from mischief on the other. This I only conjecture ; because the pheno- menon is so rare.* Then, again, with respect to the tongue: when put out beyond the lips, its point is commonly turned to one side. To which side ? Why toivards the palsied side. For what reason? Clearly because the muscles that protrude the tongue are power- less on that side, and in full vigour on the other. That half of the tongue which corresponds with the sound side is pushed further out than the other half, and there- fore the tongue bends to the palsied side. Such is the usual fact, and such the ex- planation of it. But there are more numerous exceptions to this than to the paralysis of the external facial muscles. Sometimes the tongue comes out straight ; some- times the patient cannot protrude it at all; and sometimes, even, it deviates towards the sound side. But the rule is as I have stated it. This also has been noticed of the tongue in such cases ; that the patient has been able, after some effort, to thrust it suddenly out, and then has required a certain interval of time before he could do so again ; as if the spent nervous power was slowly regenerated. With these different affections of the tongue, the patient's speech is variously altered. His voice is thick, muttering, inarticulate, or unintelli- gible. Sometimes, even though he may be quite conscious and rational, he is unable to utter a syllable ; and seems vexed at finding that his attempts to speak are fruitless. Supposing the patient to recover, wholly or partially, from the paralysis, it is th'.' leg, in nine cases out of ten, ay, and in a much larger proportion than that, whicii recovers first and fastest: sooner and quicker than the arm, I mean. And another fact, quite analogous to this, is, that when one of the extremities alone 's affected * Tills patient died afterwards, at lier own home ; and no opportunity was given o: i.i specting the body. 312 DISEASES OF THE BRAIN. \vith paralysis, it is, in nineteen cases out of twenty, the arm that is so affected. I give you again the rules ; they are Hable to occasional exceptions. The reasons that have been assigned in explanation of this curious circumstance I shall lay before you by-and-by ; after I have had an opportunity of describing the morbid appearances discovered v^-iihin the cranium in these cases. This, then, is one way in which the hemiplegia may become, or be from the first, incomplete : viz., in extent. One limb may be powerless and the other strono-. But the palsy may also be incomplete in degree. The patient maybe able to move and use his limbs, but they are feeble. He cannot bend hi? fist firmly ; nor lift his arm beyond a certain height. Or his leg feels heavy to him, and trails a little behind as he walks : he is unable to stand upon that limb ; or to plant his foot securely, or with the usual precision. In short, there are innumerable gradations of paralysis, from slight weakness of the affected muscles to perfect immobility. Besides the palsy, there is often anxstliesia also. But this is by no means so con- stant a symptom as the paralysis. The function of sensation (wherefore I cannot tell) is less frequently abolished or perverted than the function of voluntary motion. When the sensibility is lost, or blunted, or any how modified, it is so, commonly, in the same parts that are affected with paralysis. But sometimes there is anaesthesia, and no palsy ; and, more strange still, there has been sometimes anaesthesia of one side, and palsy of the other. As a general rule, the aneesthesia is less common, and less intense than the palsy ; and is much sooner recovered from. The mental faculties are, in some few instances, quite unhurt by the attack : too frequently, however, they suffer irreparable damage. Of many persons, a striking alteration is evident in the whole character and temper. The brave man has become timid ; the prudent man foolish ; the calm and cheerful man peevish and impatient. There is no longer the same power of attention, the same capacity for business, the same clearness and comprehension of thought. And whatever other changes may be observable, there are two ways, especially, in which the patient, after he has emerged from the coma, is very apt to be affected : viz., by a defection of memorj^ more or less partial ; and by a peculiar tendency to emotion, particularly the emo- tion of grief : he will weep for very slight causes, sometimes long after the attack of apoplexy has passed over. This is very curious. I should have stated before that the same readiness to shed tears, and to be immoderately affected by trifling causes of emotion, is sometimes noticed among the precursory symptoms of apoplexy. Tracing these cases onwards still further — such cases, I mean, as do not perfectly recover — we find that the palsied limb wastes. Inaction of the muscles, according to the principle which I explained to you in a very early part of these lectures, leads to lessened nutrition, and a consequent diminution of bulk : in one word, to atrophy. Sometimes, indeed, the size of the helpless limb is maintainetl, or even augmented, by ihe supervention of oedema. The motion of the blood in its veins not being aided by the play of its muscles, the areolar tissue becomes infiltered with serous liquid. Again, these palsied limbs are usually colder than their fellows. This probably is owing to the diminished circulation of blood through the capillaries : there is not so much blood converted into venous from arterial ; and less animal heat is deve- loped. This has been observed even when the main artery of the part has beat as forcibly as in the corresponding part on the other side. It is necessary to be aware that these palsied parts do not resist the influence of cold or of heat so well as the sound parts. When the sensibility is blunted, we can readily understand how the limb may become burned, from the absence of any warn- ing pain that an injurious degree of heat is applied : but this is not all, A lower degree of temperature thay would injure a sound part has often been found prejudi- cial to a palsied part : and if these palsied parts get chilled by frost, they more readily vesicate and inflame, on the return of heat, than other parts : merely warm vvater will sometimes act upon them like scahlvig water. I say a knowledge of I his fact is of practical moment. That degree of warmth which the palsied limb fails to generate for itself, we must accumulate for it by warm clothing: and we Miust tike care that it is never exposed to any artificial temperature which exceeds a APOPLEXY. 313 certain point. We sometimes see mischief done by applying hot bottles or bricks — ■ too hot — to such limbs. In speaking of the palsy, I have dwelt especially on the loss of action and power observed in the voluntary muscles ; but the strictly involuntary muscles do not alto- gether or always escape. The pulse, as I have stated, will often become slow or irregular in the apoplectic attack : and the bowels are usually very obstinately cos- tive ; their peristaltic motion, which results from the contraction of involuntary mus- cles, is suspended or diminished. Now the old writers on apoplexy puzzled them- selves with devising explanations of the fact that the involuntary muscles are so little affected in this disease. But the true reason is not far to seek. The involuntary muscles — so called because they never acknowledge the mandates of the will — ■ appertain to the functions of organic Hfe. Their movements (as I have heretofore had occasion to show you) are not necessarily dependent upon any influence derived from the nervous centres; and might continue, provided a due supply of arterial' blood were kept up, though there was no brain at all. Foetuses having no brain, ray, some unfurnished with either brain or spinal marrow, have nevertheless grown, in other respects, to their full size. It is well known that the action of the heart may go on for some time, even after its removal from the body. In truth it seems, at first sight, more difficult to explain why the organs of invo- luntary motion are sometimes affected, in apoplectic and paralytic diseases, than why, in general, they are not. But some elucidation of this matter I have also attempted to give in a former part of the course. The organs of involuntary motion, though not dependent upon the brain and nervous system, are yet liable to be influ- enced through their medium ; as we know by the effect produced upon those organs by certain emotions of mind. Dr. Wilson Philip has shown clearly, by his experi- ments, that the way to afiect the action of the heart, and of the other involuntary muscles, through the brain and nervous system, is to act upon a large portion of that system at once. Hence any disease which inflicts extensive damage upon the encephalon Avill be likely to disturb and weaken the functions of the heart and ali- mentary canal. Conversely, when we find, in a case of apoplexy, the involuntary muscles sensi- bly affected, we may infer, I believe, that the injury done to the nervous matter is great and serious. Let us next, with the view of further elucidating the pathology of this disease, direct our attention to the appearances which are met with after death, in the most common forms of the complaint. I shall pass over those cases in which no morbid condition is detected, simply reminding you that the altered relation of the venous to the arterial circulation in the brain may perhaps account for the symptoms, and for the extinction of life : or the altered velocity of the blood circulating in the brain may account for them : or, what is more probable still, a determination of blood towards the head, or a detention of blood in the head, sufficient, by tightening the full vessels, to occasion extraordinary pressure upon the nervous pulp, may account for them : or the presence of some poisonous substance in the circulating blood (such as urea) may account for them. I pass over, likewise, those cases in which serum only is found effused beneath the arachnoid, or into the ventricles. A moderate quantity of serous fluid poured out rapidly during life would certainly occasion a degree of pressure adequate to the production of fatal coma. How the serum comes to be so effused, it is not always easy to say. Yet there is one condition of the blood-vessels of the brain which, when it can be proved to exist in a given case, is sufficient to account for the effu- sion. Any real or virtual retardation of the blood in the cerebral veins would lead to what is tantamount to dropsy, there, as well as in any other part of the body ; and intelligible causes of such retardation are known sometimes to be .n operation. But I wish to consider more particularly the appearances that are met with in the brain after death by cerebral hemorrhage^ which, after all, is the most conunon source of apoplectic and paralytic disorders. Tn the first place (as I have more than once stated before) the popular notion that hemorrhage is owing to the giving way of a considerable blood-vessel — although this 2 b 314 DISEASES OF THE BRAIN. n notion seldom has reference to the brain, because the blood cannot reach the ex- ternal surface of the body, and therefore does not strike the popular sense— I say this notion is more true of cerebral than of any other hemorrhage. Much more true, especially as regards the brain than as regards the lungs, to which latter organ the bursting of a blood-vessel is, in vulgar parlance, most commonly ascribed. This comparative frequency of hemorrhage from the actual rupture of vessels may, in some measure, be accounted for by their peculiarities of texture and re- lation. The blood-vessels distributed ■within the cranium are long and slender. Excepting the sinuses, the coats of both arteries and veins are thinner and weaker than in other parts of the body : the middle tunic of the arteries has not more than one-half its ordinar}^ thickness ; and the outer or cellular coat is of such ex- treme tenuity that doubts have been entertained concerning its existence. These vessels, moreover, are not protected, as elsewhere, by investing sheaths of cellular membrane, and rsceive but slight support from the soft and delicate substance by which they are immediately surrounded. They are hkewise very subject to a par- ticular form of disease, by which their natural fragihty is much increased : and lying near to the heart, and in the primary direction of the blood as it is driven from the left ventricle, they have been thought especially liable to sustain the additional mo- mentum arising from the more forcible contractions of that chamber; whether these are determined by occasional transient causes, or depend upon permanent organic disease of the heart itself. On this point, however, I shall have something more to say hereafter. Still there is no reason, I think, for doubting, that hemorrhage by exhalalion may take place, though rarely, from the free surface of the brain, or rather of its investing membranes. But the rule is, that it proceeds from the mechanical rupture of a blood-vessel. In cerebral hemorrhage, the blood may be effused in one or other of three differ- ent situations ; viz., upon the external surface of the brain, i. e., upon or between the membranes ; or into one or more of its ventricles ; or into the very substance of the brain itself. In the two former situations it is sometimes, perhaps, poured out by exhalalion : in the latter, which is infinitely the most common, it always proceeds from the rupture of one or more blood-vessels. It is necessary to remember that even when blood is found spread over the surface, or distending the ventricles of the brain, it frequently has not been originally poured out in those situations. If the hemorrhage into the substance of the brain be con- siderable in amount, the blood generally forces a passage, by laceration of the cerebral tissue, either into the ventricles, or (less frequently) to the surface ; or even in both these directions at once. In some rare cases blood is found effused beneath or into the pia mater, over a small space onlj% as between one or two of the convolutions, and nowhere else. Sometimes it is spread in a thin layer over the whole of one hemisphere, and is found nowhere else. Sometimes blood is discovered in one or more of the ventricles, and nowhere else ; but all these are comparatively unfrequent events. When the blood is effused into the substance of the brain, and does not break a passage out, either in the one direction or the other, its pressure is not necessarily or immediately mortal. The patient, as I have already explained, may survive for weeks, or months, or years ; and the clot of blood will, in the mean time, undergo very remarkable changes. The cell, or cavity, in which the extravasated blood is contained, varies much as to its fiize. It is sometimes scarcely of sufficient ca])acity to receive a large pea: sometimes it occupies nearly the whole of one hemisphere. It is seldom, however, 1 repeat, that a communication is not formed between the original cavity and the surface in the one direction, or the ventricles in the other, when much blood has been shed. Frequently a direct opening is made bj^ the blood from one lateral ventricle to the other through the septum lucidum ; sometimes it passes from the one to the other through' the foramen of Monro ; and even the chamber of the septum lucidum itself has been found distended by a certain quantity of blood. I APOPLEXY. 315 If the clot of blood in an isolated cavity be examined soon after its effusion, it is found to be of a soft f^elatinous consistence, and of a dark colour, much like blat-k currant jell}'. The sides of the cavity are irregular and ragged ; and the cerebral substance of which they are formed is generally, to the depth of a line or two, moist, soft, and as if stained of a reddish or yellowish colour, which is fainter in proportion as it is more distant from the coagulum, and gradually loses itself in the natural tint of the surrounding parts. This latter condition would seem to depend upon a slow imbibition of the serous portion of the effused blood, mixed with some of its colouring matter. It begins to manifest itself about the third day from the attack, and is most apparent from the eighth to the twelfth day ; at which period, under ordinary circumstances, the whole of the serum has been removed, and the process of absorption seems to be in active operation. By degrees this stain dis- appears ; the coagulum becomes more and more compact ; assumes first a brownish, and subsequently a pale red or even yellowish hue ; diminishes continually in mag- nitude; and at length may be entirely reabsorbed. In the mean time the walls of the cavity are becoming less uneven, and clothe themselves, by degrees, as they contract upon the shrinking coagulum, with a dis- tinct membrane of a yellowish colour, sometimes of extreme delicacy, and resem- bling the serous membranes ; sometimes thick and apparently fibrous. When the opposite sides of the cell at length meet, they adhere together, and a true cicatrix ensues, the place of which is marked by a sort of fibrous knot, forming a remark- able contrast with the softer texture around it ; or less frequently by a similar indu- ration of a linear form. In this case, the sides of the collapsed cavity are sometimes found to be merely applied to each other, without actual adhesion. When, from the great extent of the original cavity, or from some other cause, its parietes are not ultimately brought into mutual contact, there remains a kind o^ cyst, lined by a smooth yellowish membrane ; sometimes traversed by a few slender threads of areolar tissue which cross each other in various directions ; sometimes filled with a soft, fine, orange-coloured spongy tissue, in which a number of minute blood-vessels ramify; sometimes containing a gelatinous or serous liquid ; and sometimes apparenllj' empty, having been occupied by some kind of aeriform fluid. It is impossible to assign the precise period within which these remarkable changes may be accomplished. Dr. Abercrombie has detailed an instance in which a coagulum, that m.ust have been of very considerable size, had entirely disappeared in less than five months. In another of his cases it was seen to be partially absorbed at the end of three months. " On the other hand, Moulin found a small coagulum not quite gone at the end of a year : and Riobe observed some of the blood still remaining in a cavity of small extent after twenty months. In two cases Serres found a hard coagulum of blood remaining; in one at the end of two, and in the other at the end of three years." It has been said that the cicatrization of the cavity takes place much more slowly and imperfectly when the effused blood has passed across and torn the fibres of the brain, than when it has been poured out in a direction parallel to those fibres, so as to separate without breaking them. Dr. Abercrombie states that he had never seen any thing to satisfy him that the cysts are capable of being obliterated by cicatrization. iXeilher have I. But Dr. Sims, Dr. Bright, and several of the French pathologists of approved credit and ac- curacy, agree in their description of this obliteration of the cells. And you should bear in mind that a small cicatrix in the brain may very easily escape notice, if not expressly sought for; especially as the examination of that organ is often conducted, viz., by cutting away thick slices from the hemispheres in rapid succession, in order to arrive as soon as possible at the lateral ventricles and the base of the brain. It frequently happens that a patient has suffered, during life, several distinct attacks of apoplexy or of cerebral hemorrhage ; and that as many cells are met with after death, exhibiting respectively various stages of that process of repair which has jus'l been described. These are the changes that mostly take place in the coagulum, ana its containinjij cell, when the hemorrhage does not prove fatal, and the patient, recovers more or 316 DISEASES OF THE BRAIN. less completely. But the same changes do not always, or necessarily, occur. Instead of being- gradually removed by absorption, the extravasated blood appears occasionally to become a solid, organized, and consequently living mass, deriving its nourishment from the arteries of the brain. A man, whose case is related by Andral, was smitten with apoplexy, and remained thenceforward, for many years, hemiplegic. At lengtli he died, of some other complaint, in the wards of La Charlie. When his brain was examined, there was found, in one of the hemispheres, a mass of a pale red colour and fibrous appearance, traversed by numerous small blood-vessels which anasto- mosed with those of the brain : the surrounding nervous matter retained its natural aspect ; and there was no appearance of any cyst. I have yet to mention another, and a fatal consequence of hemorrhage into the substance of the brain. It is not, I think, a very frequent consequence ; yet it de- serves attention the more, because the risk of its occurrence may perhaps be lessened by judicious treatment in the outset. The clot sometimes provokes suppurative inflammation of the cerebral matter around it: or it may be that the nervous pulp, being bruised or torn bj^ the first violent irruption of the blood, suppurates spontane- ously afterwards. It is affirmed (by what French author I forget) that the patient cannot be considered secure against this consecutive mischief, until eight days of safety have elapsed from the period of the apoplectic seizure. Instances of this result of cerebral hemorrhage, according to my experience, are not, I say, very common. I have before me some memoranda of the last case of it that I saw. I received on the 3d of September, a note, written in a remarkably clear and neat hand, desiring that I would call upon the writer, as he had had a severe attack of apoplexy a day or two before. I concluded that the note had been penned by some member of the patient's family, and I expected to see him in his bed, paralytic probably, or manifestly ill. But I found a stout active gentleman, walking about in his drawing-room, apparently in perfect health, and declaring that he felt so. He showed me, however, a paper written by a surgeon, who on the previous day had brought him to town from a dis- tance, and who had been obliged to return immediately. The paper stated that Mr. had suffered a sudden and decided fit of apoplexy on the 30th of August; that he was then freely bled ; that perfect consciousness was not restored, nor the force of the pulse subdued, till twenty ounces of blood had issued from his arm; and that on the evening of the same day sixteen ounces more were drawn. Mj'^ patient spoke of going down to his country-house, where he had, he said, " a good deal of shooting to do." I dissuaded him from this, and enjoined perfect quiet for at least a fortnight to come. The next day, after a long and imprudent conversation with a friend, he suddenly lost the thread of his discourse, and could not recover it. Then he became confused, and misapplied words. I asked him how he felt. He answered, "not quite right," and this he repeated very many times, abbreviating it first into " not right," and at length into " n'ight." Wishing to mention " camphor," he called it " pamphlet." I mention these as specimens. On the 5th it was evident that his right arm and leg were weak in comparison with the others ; but their sensibility was unimpaired. By slow degrees the weakness degenerated into complete palsy, and the right side of the face became motionless. Gradually also he grew heavy, stupid, comatose, unable to swallow, with a fixed pupil ; and so, on the morning of the 15th of Sep- tember, he died. We examined his head the next day. On the left side, the dura mater adhered to the skull-cap with morbid firmness. During the endeavour made to detach it, a tablespoonful, or more, of a dirtj'-looking, greenish, very offensive pus spurted forth. This was found to have proceeded from an abscess, which must have contained iwo ounces of pus, and which was situated in the upper part cf the left hemisphere of the cerebrum. The walls of the abscess looked as if they \vere coated with a 'layer of yellowish plaster. In the centre of this cavity was a small, fibrous, tough mass o'" a dull red colour ; the coagulura, doubtless, of blood effused on the 30th of APOPLEXY. 317 August. In front of the abscess the brain seemed natural, but its consistence waa that of hquid custard. It has long been Icnown that hemorrhage does not occur in all parts of the sub- stance of the brain inditferently. Morgagni had remarked the frequency of sanguine ous effusions in or near the corpora striata and optic thalami ; and more extensive subsequent research has amply verified the general correctness of his observation. Rochoux, in the treatise on apoplexy which I mentioned before, published in 1814, has given a tabular account of the morbid appearances observed by himself in the heads of 41 persons, dead after attacks of cerebral hemorrhage. In so many as 24 of these, i. e., in three-fifths of the whole number, the blood was extra vasated in the corpus striatum ; in two others in the optic thalamus ; in one it was effused into the substance of both the corpus striatum and the optic thala- mus of the same side ; and in another, beneath the corpus striatum : so that alto- gether there were 28 cases out of 41, or seven-tenths of the whole number, in which the clot was confined to the corpora striata, optic thalami, and their immediate neigh- bourhood. In the remaining three-tenths the blood was found collected in several other parts of the cerebral mass ; five times in the middle of one of the hemispheres ; twice towards the posterior part of the ventricles ; twice in the inner and anterior, and three times in the inner and posterior portion of the hemispheres ; and once in the middle lobe. In Andral's Pathological .Anatomy you will find a much more extensive table relating to the same subject, and constructed by him from various authentic sources It leads to the same general conclusions. Thus, among 392 cases of hemorrhage into the nervous substance, there were 202 (or more than one-half) in which the blood was extravasated at once into the corpora striata, the optic thalami, and that part of the hemispheres of the brain which is on a level with those bodies. In 61 cases (or about one-seventh of the whole number) it was confined to the corpus stri atum. In 35 (or one-eleventh of the whole) it was limited to the optic thalamus; making, in all, 298 instances (or more than three-fourths of the whole number) in which the sanguine effusion occupied the corpora striata, optic thalami, and their immediate vicinity. The result of my own observation coincides entirely with this, although I cannot, at present, reduce it to a numerical statement. From the same table we may infer also the comparative infrequency of hemor- rhage into the cerebellum. It is mentioned as having occurred in 21 of the 92 cases ; or in about 1 in 19. Dr. Craigie states that the parts which are the seat of the hemorrhage may be arranged, in the order of frequency, as follows : — the corpus striatum ; the optic thalamus ; the hemispheres ; the pons varoUi ; the crura of the brain ; the medulla oblongata ; and the cerebellum. It is natural to seek for some physical explanation of the causes which determines the extravasation of blood in certain parts of the brain more frequently than in others. Some light may, perhaps, be thrown upon this inquiry, by a consideration ot the sources of hemorrhage, in various forms of its occurrence. I stated before that the blood may sometimes be poured out by exhalation, in those less frequent forms of cerebral hemorrhage to which M. Serres has applied the term meningeal apoplexy, and in which the blood is found distending the ventricles, or spread, like a cap, over the surface of the hemispheres, without any laceration of the cerebral matter. This supposition rests, however, rather upon the analogy drawn from what is known to occur in other parts of the body, than upon any decisive and unequivocal evidence. Blood has not unfrequently been discovered in each of these situations, when the most careful scrutiny has failed to trace its source to any ruptured vessel. Yet we cannot doubt that such rupture may have existed — either in some one or more of the numerous vessels of the pia mater, in the one case, or of the plexus choroides in the other — and yet have escaped detection by the most vigilant eye. In Dr. Abercrombie's book there are two interesting examples of extravasa- 2b2 318 DISEASES OF THE BRAIN. tion upon the surface of the brain, without any obvious source of the hemorrhage ; the one detailed by Dr. Hunter, of Edinburgh, the other by Dr. Barlow, of Bath. That the hemorrhage proceeds from rupture of some of the vessels composing the choroid plexus, rather than from the membrane that lines the inner surface of the ventricles, when the effused blood is confined to those cavities, is the more probable, because the vessels have been actually found broken (as in cases of ventricular he- morrhage, described by De Haen and Cruveilhier), and because they are liable to well-marked disease of a nature to render them more than usually fragile. The arteries, for example, which belong to that plexus, are subject to a peculiar kind of alteration that I shall presently mention as frequently pervading the whole arterial system of the brain ; and its veins are often partially enlarged and varicose. This latter condition has sometimes been mistaken for a collection of small hydatids. But hemorrhage into the substance of the brain depends always upon rupture of some one or more of its blood-vessels ; and it is to this fact of the rupture of vessels ihat we must chiefly look for an explanation of the peculiar liability to hemorrhage of certain portions of the brain ; the corpora striata, namely, the optic thalami, and the parts immediately adjacent to these. The corpora striata are not only of much softer consistence than most other parts of the brain, but they are also traversed by more numerous as well as by larger blood-vessels than are other parts. These facts, and the conclusions to which they point, did not escape the sagacity of Morgagni. "On some occasions (says he) when I have cut the corpora striata into pieces hori- zontally, I remember to have observed in the external anterior part of each, a little pit, as it were, across which lay a very conspicuous blood-vessel. And on other occasions, upon cutting obliquely and slowly, 1 have remarked, in the same situation, man)'- red lines, Hke threads, which were in fact blood-vessels running parallel to one another, and of a larger size than elsewhere." In truth, you may often notice the open mouths of a cluster of such vessels that have been divided. Morgagni saw in this anatomical fact a probable solution of the pathological fact that the parts in ques- tion are the most common seals of extravasation. In corroboration of these views it is worth remarking that the corpora striata are especially subject to laceration and sanguine effusion, while the surrounding parts remain unhurt, in violent concussions of the brain. And when injections are forced into the cerebral blood-vessels in the dead body, it is in the very same parts, the corpora striata above all others, that a sort of factitious hemorrhage is produced by the rupture of vessels, and the escape of their contents. I have mentioned some original peculiarities of texture and relation, which majr be thought to predispose the blood-vessels of the brain, more than others, to laceration. But the main predisposing cause of that event is, doubtless, their great liability to disease. Except the commencing portion of the aorta itself, there are no arteries in the body so frequently found in a morbid state as the cerebral arteries. And the change to which they are most subject is that deposition between their tunics, some- times of a substance resembling albumen or soft cartilage, sometimes of actual phos- phate of lime, to which we commonly apply the term ossificafion. This earthy or cartilaginous deposit exists usually in whitish patches of a roundish or oblong form, disposed at various distances from each other: sometimes in a succession of bony rings, with healthier portions of the artery between them. One effect of this morbid condition is to diminish the bore of the affected artery, and to make it of unequal capacity. And as this variation of calibre impedes the free passage of the blood, it tends indirectly to increase the pressure of that fluid against the sides of the vessel. Another eflect is to deprive the coats of the artery of their natural elasticity, and to diminish their power of cohesion ; and thus to render them v/eak and frangible, and at length unable to sustain the increased impulse of the blood. This condition occurs in the smaller ramifications as well as in the larger trunks of the cerebral arteries. 'rhere is yet another occasional cause of hemorrhage. The arteries at the base ol the brain are subject to aneurism, and to consequent rupture. Morgagni has reported cases of aneurism afl^ecting the internal carotid and basilar arteries. Serres has described a case of apoplexy resulting from perforation of the basilar artery, which was dilated, not far from its superior bifurcation, into an aneurismal pouch as APOPLEXY. 319 big as a hen's egg. Dr. Baillie records an instance where both the internal carotids, on the side of the sella turcica, were distended into little aneurisms, one of the aneu- risms being about the size of a cherry, the other somewhat smaller: and similar examples are related by other writers. I have seen two such myself; a beautiful preparation of one of them is preserved in the museum of the College of Physicians. LECTURE XXX. Apoplexy continued. Relations between the Symptoms and the Appearances found in the brain after death. Exciting Causes. Prognosis. Treatment. I LEFT off in the last lecture, after having described the appearances discoverable within the head, at different periods subsequent to an attack of cerebral hemorrhage ; and pointed out the various sources of the hemorrhage ; and endeavoured to explain how it happens that the blood so much more commonly proceeds from a ruptured vessel in or near the corpus striatum and optic thalamus, than in any other part of the brain. Some account of the connection traceable, in these cases, between the physical injury done to the brain and the symptoms, has already been given by anticipation. I proceed to touch upon certain points, relative to that connection, which have not yet been noticed. One of the most remarkable circumstances Avhich dissection teaches us, when there has been partial palsy, is, that the palsy is on the one side of the body and the hemorrhage of the brain on the other. This is a very general law. But excep- tions to it are said to have been observed. Morgagni mentions such Dr. Brigh*' has recorded a somewhat doubtful case of exception. I have never met with any : and I cannot help suspecting that in some of those which are said to have occurred, mistakes have been made : that either they have been incorrectly observed, or inac- curately described. You may consider the rule as almost, if not altogether, universal. This crossing over of the morbid effect of the extravasated blood, or of any other diseased state, has long been attributed to that crossing over of nervous fibres which takes place at the upper part of the spinal cord. Just where the medulla oblongata and the medulla spinalis unite, the anterior pyramids decussate each other, and send their fibres mutually to the opposite side of the body. All this of course you kuow. The right anterior pyramid is continued into the centre of the left half of the spinal cord ; and the left anterior pyramid into the centre of the right half of the cord. Now supposing, as we have every reason to suppose, that the nervous influence, whatever may be its nature, travels in the course of the fibres of the brain, we see in this decussation of the anterior pyramids an easy and pleasing solution of the phenomena in question. But then comes this serious clifHcully. How does it happen that the muscles of the face and tongue — which are supplied by nerves that arife from the nervous centres above the place of decussation — how does it come to pass that these muscles sustain the same cross injury, and arc paralyzed on the same side on which the limbs are paralyzed ? And again, how does it happen (as it certainly does) that hemorrhage into the cerebellum should have a similar cross influence ? These seeming anomalies have never been satisfactorily explained. Indeed I do not know that any one has undertaken to explain them except Mr. Mayo : whose peculiar speculations concerning hemiplegia — first promulged, as they were, in this place ; coming, as they do, from so eminent a physiologist ; and being, as I deem them, in many respects, erroneous ; — demand here a brief consideration. He takes some pains, in the first place, to show that the morbid influence is con\- municated from one side of the brain to the limbs of the other side of the body, by means of the fibres of decussation already described. This point did not, I thinli. require any laboured demonstration; but he has made a happy use of two facut previously ascertained, which, taken together, afford a very neat proof that the t-aat 320 DISEASES OF THE BRAIN. ference of the morbid influence, or privation of influence, from one side to the other actually takes place in that very part of the nervous system where the decussatino fibres meet, 'Vhefads are stated by Dr. Yelloly, in the Medico-Chirurgical Wan soctions. Sir Astley Cooper divided the right half of the spinal cord of a do?, in the space between the occiput and the atlas; immediately, that is, after the cord ha? emerged from the skull through the foramen magnum : the result of this division ol the cord was hemiplegia, paralysis of the limbs, on the same side -with the injury The bridge by which the morbid effect crosses over must therefore be above thai point. We have got a limit on one side. And a case observed by Dr. Yelloly gives u? a limit on the other. He examined the head of a man who had died hemiplegic ; and he found a tumour, as big as a filbert, imbedded in and pressing upon the ric^hi side of the anmdar protuberance. The palsy had existed on the left side. The bridge of communication must consequently lie below that point. It must lie, there- fore, between the two points now indicated ; i. e., it must be either in the medulla oblongata, or just at the junction of the medulla oblongata with the medulla spinalis. Now in this very interval, and here alone, a decussation of the nervous filaments is tound to exist. There can be no doubt that the decussating fibres form the channel of communication. Supposing (what perhaps is questionable) that the prevalent notion respecting the uses of the anterior and posterior columns is correct, Mr. Mayo next explains, more clearly than I have found it explained by any previous writer, that the decussation of the anterior pyramids accounts both "for the palsy and for the anaesthesia, which are apt to accompany cerebral hemorrhage into the opposite side of the brain ; inas- much as the decussating fasciculi, on plunging into the opposite column of the spinal marrow, strike into its centre ; and implicate themselves nearly as much with the posterior, as with the anterior, i. e., nearly as much with what is thought the sen- tient, as with what is thought the motor portion of the cord. The wonder seems to be why the numbness is not more constant ; why it is infrequent in comparison with the afl^ection of the voluntary muscles. Mr. Mayo holds that palsy does not result from "the interruption of the ordinary supply of nervous stimulation furnished by the brain " — for this reason, that in living animals the brain has been gradually removed, sliced away, yet sensation, and the power of voluntary motion, have subsisted ; and that instances of acephalous human infants, which have survived their birth, show the medulla oblongata and spinal cord to be sufficient, tuithont the brain, for the production of sensation and voluntary motion. He conjectures, therefore, that the immediate cause of the hemiplegia is " a depressing injhience, or shock,'"' (a withering inflitence he elsewhere calls it,) "originating in the brain when in certain states of lesion, and propagated from it to the medulla oblongata and the spinal marrow." Now it can scarcely be doubted, at least I cannot doubt, that the inference here drawn from the movements observed in acephalous monsters, and in animals after amputation of their brain, is a wrong inference. They are purely automatic move- ments, independent of sensation and of the will, and derived from the reflex endow- ment of the cord : and if this be so, the main foundation of Mr. Mayo's argument is cut away. His prime error, which has led him still further astray, is that of attri- buting sensation and volition to the spinal cord. For my own part, I can form no distinct conception of any positive and persistent depressing influence, except pressure. But mere pressure Mr. Mayo repudiates; asserting that in many cases of hemiplegia from cerebral disease there is no pressure. And this maybe granted: although even in cases of softening, such as he refers to, the mere absence of sup- port in some parts of the brain might lead to the subsidence or settling down of other parts, so as to cause pressure upon the medulla oblongata. I took some pains, in the course of the last lecture, to show you that pressure is adequate to the produc- tion of coma and general paralysis ; and pressure on a nerve in its course we are sure is capable of occasioning local paralysis : so that the theory would not seem ven,' wild, which should ascribe the hemiplegia resulting from cerebral hemorrhage, •»r cerebral disease, to the benumbing influence of pressure. Now. if Mr. Mayo's notion, that some " shock " or " withenng influence " is trans- APOPLEXY. 321 mitted from the injured brain, could be proved to be true ; or, on the other hand, if it could be established that this influence is no other than the benumbing influence of pressure; either supposition would plausibly account for these facts, viz., that " in general hemiplegia from cerebral lesion, the palsy of the leg is (commonly) less complete, and is sooner recovered from, than palsy of the arm," and that when one of these limbs only is aflected, it is (commonly) the arm alone. The shock, or the pressure, would be most felt in proportion as the part was nearer the origin of the pressure ; and less felt in propurtion as we receded from the source of the injurious influence. But, unfortunately, I was obliged to insert the word [commonly) in the statement just made of the facts : which word Mr. Mayo does not employ. To make either his theory, or the theory of pressure, perfectly satisfactory, either the arm alone should be affected ; or the aflection of the arm should always accompany and be more intense than, or at any rale not less intense than, the affection of the leg. But this is not the case. Since Mr. Mayo's observations were published, I have met with two or three instances and pointed them out to him, in which the leg alone, or the leg first, has been palsied, from cerebral disease. And Andral, among seventy- five cases of cerebral hemorrhage collected for another purpose, which 1 shall pre- sently advert to, met with twelve in which the leg only was affected. It is a great pity that these stubborn facts should thus cross and thwart what might else be esteemed a very pretty theory. I confess that, to my mind, the phenomena of hemiplegia are the most easily accounted for by the very hypothesis which Mr. Mayo rejects, viz., that the paralysis depends upon a simple interruption of the nervous influence, a breaking up, or an obstruction, of the road by which the changes leading to sensation travel in the one direction, and the mandates of volition in the other. We may easily conceive that the conducting fibres which lie between the sensorium and the muscles of the les: may alone be torn across, or severed by a process of softening, or strongly compressed, while the residue of the conducting apparatus is entire. This notion, of some breach, or other impediment in the channels of communication, seems more consonant with what we know both of the physiology and of the pathology of the brain, than any other that I am acquainted with. I must not omit to give you Mr. Mayo's explanation of the other and main difficulties to which I referred — viz., that when one side of the cerebrum is injured, the muscles of the other side of the face are paralyzed ; and /hat hemiplegia, resulting from disease of the cerebellum, affects also the opposite side of the body : — and having given you it, I shall leave it, without further comment, to your consi- deration. Mr. Mayo's words are : " Where the decussating fasciculi of the anterior pyramid plunge into the opposite half of the spinal marrow, they are implicated, in a wonder- ful closeness of intermixture, with fibres which, in their upward course, bend towards the places of origin of the ninth and seventh, and of the eighth and fifth nerves of the palsied side. May it not be supposed that this interlacement may be a sufficient means of communicating the palsying influence to the ascending fibres, which are in close relation to the affected cerebral nerves ?" Again, " How is the fact to be accounted for, that hemiplegia of the opposite side is produced by lesion of one hemisphere of the cerebellum/ I have little doubt that the. following explanation of the phenomenon will eventually prove to be correct. The fibres of the anterior pyramids pass through the pons varolii. The |x)ns varolii consists in great part of filaments which issue from each hemisphere of the cerebel- lum. These filaments may easily be supposed to convey a depressing: influence from the diseased hemisphere. But in their course they come immediately upon the filaments of the anterior pyramid of the same side ; and they are so implicated widi the latter, with such a singular closeness of reticulation, and often with so much that looks like an actual interchange of filament, that it is far from unlikely that they may transmit to the descending fasciculi of the pyramid a shock which may ihence be communicated to the same part at which a cerebral lesion exerts us paralyzing lorce." 21 322 DISEASES OF THE BRAIN. I will only say further of this hypothesis, that if the explanation it furnishes of the facts in question be not the best and most satisfactory in the world, it is the best and most satisfactory that we yet possess : and that, at any rate, we may make use of it lo bind those facts to our recollection, until some better theory shall be devised. There is one very curious law asserted, by Andral, in respect to hemorrhage of the cerebel/tnn. If the blood is effused into one side of the cerebellum, and nowhert- else, the palsy that ensues follows, I repeat, the general rule ; it takes place in the Umbs of the opposite side of the body. But supposing hemorrhage to take place on one side of the cerebrum, and on the other side of the cerebellum, simultaneously . what then, think you, happens? Doubtless you would expect that there should be palsy on both sides of the body. Hemiplegia on the one side, from the effusion into the brain proper ; hemiplegia on the other side, from the effusion into the cerebel- lum : double hemiplegia; that is to say, general palsy. But it is not aiways so, in fact. The cerebral affection seems to overpower and master that of the cerebellum. Whatever the explanation may be, the palsy has been found to occur on the side opposite to the lesion in the brain proper ; and not to occur on the side opposite to* the lesion in the little brain. This is a very singular fact, of which Andral relates four or five examples. But 1 suspect ihat they will ultimately take their place among the " anomalous" cases. As facts multiply, the law will, 1 conjecture, be found to be a different one. The complex structure of the brain, and the dissimilar consequences that ensue, in different cases, from its injury or disease, leads directl}?^ to the belief not only that the organ subserves several distinct functions, but also that separate parts or sections of it hold peculiar and definite relations with other portions of the body. Ingenious men have even attempted to settle these points experimentall^^ By wounding or removing various portions in succession of the cerebral mass in living animals, and comparing the resuUs, they have endeavoured lo assign to each portion its particular province and function. But to say nothing of the remarkable differences which exist between the cerebral functions in man and in the inferior animals, there is an una- voidable source of fallacy common to all such experiments. We cannot reach the particular spot in the brain upon which the contrived injury is to be inflicted, with- out penetrating and hurting various other parts : and fronn these combined injuries (dangerous, indeed, and often fatal in themselves) arise symptoms which the experi- menter may erroneously conclude to be characteristic of the lesion originally in his contemplation. Much more accurate and satisfactory data for the determination of this interesting class of questions, would seem to be furnished by the spontaneous operation of dis- ease, and especially of the disease we are now considering. The injury done to the cerebral substance by the irruption of blood is not less sudden, nor less mechanical, than in the exf)erimen-ts or contrived observations to which I have alluded. It is capable, also, in many instances, of exact appreciation in regard to its extent ; the parts which lie round the seat of the effusion remain undisturbed ; and above all, the organ that is the subject of our observation is the human brain itself. Attempts have accordingly been made to connect particular symptoms with the disorganization of particular parts of the brain. These attempts can boast, as yet, .t must be confessed, but little success. Very few, if any, of the conclusions hitherto advanced upon this intricate subject can be relied on. Yet it is proper that you should be informed of them. Because palsy of the arm is, in general, more complete, and more persistent, than palsy of the leg, it has been maintained that the former, the paralysis of the arm, is to be ascribed to hemorrhage of the corpus striahmi, which seems to be more com- mon than any other; and upon similar grounds hemorrhage of the optic thalamus has been supposed to determine paralj'sis of the kg. So much iiave these distinc- tions been confided in, that the honour of having first pointed them out has actually, in France, been made a subject of dispute. Now it is plain that one example of the contrary effect of these particular lesions, would suffice to upset the whole theory : but many such exceptions have, in fact, been noticed. It was with the view of set- nng this question that Andral collected and collated the seventy-five cases of cere- APOPLEXY. 323 bral hemorrhao^e to which I lately referred. In each of these seventy -five cases the clot of blood was sufficiently limited to allow of that case being applied towards the solution of the controverted points. In forty of the seventy-five, both the leg and the arm were paralyzed together And where was the place of the hemorrhage in these forty cases ? Why, in twenty one of them the corpus striatum was the only part injured ; and in nineteen of them the optic thalamus was the only part injured. Thus you see, according to the theory just explained, in about one-half of the cases the arm alone should have been pal- sied ; and in about half, the \eg alone : whereas both leg and arm were palsied in them all. Again, in twenty-three of the seventy-five cases the palsy was confined to the arm. Therefore, according to the theory, the injury should have been confined to the cor- pus striatum. What was the fact ? Why, in this class of cases also there was as nearly as possible an equal sharing of the injury between the two parts. In eleven of the twenty-three the corpus striatum alone suffered ; in ten the optic thalamus alone ; in two the space between them. Once more : there were, as I stated before, twelve out of the seventy-five cases in which the leg alone was palsied. Consequently, in all of these twelve, if the theory Avere sound, there should have been damage of the optic thalamus only. But in ten of them the mischief was confined to the corpus striatum ; in two only to the optic thalamus. Gall had conjectured that the faculty of speech was placed under the governance of the anterior lobe of the brain : and Bouillaud has endeavoured to support that opinion by a number of facts observed in connection with cerebral hemorrhage ; but Cruveilhier has brought forward several curious instances in which the loss of speech was a prominent symptom, while the disease was not found in the anterior lobe, but in some other part of the brain. Andral, with his accustomed industry, has accumulated evidence upon this point also. In thirty-seven cases of cerebral hemorrhage observed by himself, or by others, in which the morbid condition occupied one or both of the anterior lobes, the power of speech was abolished twenty-one times, and unaffected sixteen times. On the other hand, he has collected fourteen cases, in which the power of speech was lost, yet no alteration had taken place in the anterior lobes. In seven of these fourteen cases the lesion was situated in the middle lobes ; and in the other seven in the posterior lobes of the brain. There can be no doubt that there are certain distinct parts of the brain which in fluence respectively the upper and lower Hmbs ; inasmuch as they are often sepa rately palsied : and since the loss of speech is occasionally the only, or the most prominent symptom, while in other cases the speech is not affected at all, we cannot but believe that this faculty is under the special guidance of some definite part within the cranium. But the facts that I have just been quoting, show, in the most convincing manner, that we are not able, as yet, to allot these separate functions to their proper spots in the cerebral mass. I dwelt some little time, in a previous lecture, upon the circumstances that give ivarning to the patient, or to his physician, that the former is in danger of being smitten with apoplexy. The great use of being acquainted with these circum- stances, and of looking out for them, consists in the opportunity and the authonhj which they furnish, for enforcing, upon the person in whom they manifest them- selves, the absolute necessity of avoiding all the avoidable exciting causes of the disease. But our means of advising him will be very imperfect if we have not carefully considered what these exciting causes are. I propose to devote n few mmutes, therefore, to the consideration of the circumstances that are apt to bring on the attack. There are many cases of apoplexy in which we cannot trace the ope- ration of any such causes : but in many other cases their influence is decidedly marked ; and the avoidance of them, while it is important to all who show a dispo- 324 DISEASES OF THE BRAIN. sition to apoplectic disease, is especially so to those who, having once suffered an attack, have reason to dread a repetition of it. In the first place, any thing which is calculated to hurry the circulation, and to increase the force of the heart's action, is likely to operate as an exciting cause of apoplexy : simply by augmenting the momentum of the blood against the sides of the cerebral vessels, which in advanced life are so often diseased and weak Strong bodily exercise, therefore, is a thing to be avoided by all persons in whom the predisposition to apoplexy has declared itself. It is of much importance to make patients aware of this ; for many persons think, when they labour under uncom- fortable bodily feelings of any kind, they may get rid of them by a brisk walk ; or by galloping some miles over the country on horseback. Another dangerous state for such persons arises whenever the free escape of the blood from the head is suddenly obstructed. I have adverted to this before. Certain diseases, chiefly thoracic, which tend to keep the veins of the head inordi- nately full, rank among the predisposing causes of apoplexy. But, upon the very same principle, various conditions, which are temporary only, may operate as ex- citing causes. By what is called " holding the breath," whether upon an inspi- ration or expiration, the transit of the blood through the lungs is impeded : and the check is felt (through the pulmonary artery, right chambers of the heart, and great veins) in the vessels of the head. And this effect is increased when straining is at the same time performed ; that is, when a deep breath is taken and retained, while some muscular forcing effort is made. Under this principle fall a number of bodily acts, which, however harmless in a healthy frame, are not without peril to a person having a predisposition to apoplexy. The motion of the blood in the lungs, and therefore in the head, is checked in the acts of coughina:, vomitinn;, sneezingf laucrhinfr, crvinaf, shoutinof, and so forth. You cannot have looked at a person in a violent paroxysm of coughing without seeing that it produced a determination of blood to the head, or rather a congested state of the veins of the head. The jarring pain in the head which is apt to follow each succession of the cough depends upon this principle : which is often strikingly illus- trated in young children labouring under hooping-cough. They turn purple in the face, and become giddy ; and not uncommonly ecchymosis of the conjunctiva occurs, giving fearful evidence of what might just as readily take place ivithin the cranium. It is not very unusual for the whole of the white part of the eye to become sud- denly blood-shot in these violent fits of coughing; and convulsions even have hap- pened under the like circumstances. Straining at stool is a common exciting cause of apoplexy in those who are pre- disposed to it. And this is one of the worst dangers attending costiveness of the bowels in old people ; but it is one which it is often in our power effectually to obvi- ate. It is more within our control than a bad cough could be. Any kind of strain- ing, indeed, is equally perilous. A very good proof of this danger was recently afforded by a patient of my own. He was attacked with apoplexy on his way to Ascot races ; and upon recovering somewhat, was found to be paralytic on one side of the body. He was brought back to town, where I saw him. After some time he regained the power of using the affected limbs to a very considerable extent; so as to be able to walk about and follow his business, which was that of a job-master, or proprietor of a livery stable. I cautioned him seriously, inter alia, against strain- ing: but I suppose he forgot my caution. For, while dressing one morning, he tugged violently in attempts to pull on a damp boot, and in the midst of his efforts fell back insensible ; and from this relapse he never fairly recovered. To the same pr.nciple is to be referred a variety of things from which a patient, in danger of this disease, must most carefully abstain. Lifting heavy weights ; leap- ing ; striking a hard blow ; playing on wind instruments ; even long and loud talking. Dr. Abercrombie relates two instances of fatal apoplexy brought on (as it wouW seem) by a sustained exertion of the voice : one of the attacks happened to a clergyman during the delivery of his sermon ; the other to a htcrary man while speaking in a public assembly. In both cases a large quantity of blood was found ex'ravq.sated within and upon the brain. Dr. James Gregory' used to mention a APOPLEXY. 32S patient of his, an officer in tlie army, who had apoplexy, and in wiom the attack had been preceded by pains of the head and giddiness, upon his giving the word of" command, and particularly when dwelling upon the last sound : that is, when he made a long expiration. Precisely of the same kind is a case told by Van Swieten, of a singer who was obliged at length to abandon her vocation by reason of gradually increasing vertigo whenever she had to hold a high note. Violent emotion is another exciting cause. Large fires, crowded rooms, the heat even of the sun, favour the access of apoplexy, and therefore ought to be shunned by those who have a ten- dency to that disease. The warm bath is not without hazard to such persons. This is so well known, I understand, at Bath, that the physicians there will not allow paralytic patients, in whom the paralysis has been connected with apoplexy — hemi- plegic patients, for example — to go into their hot baths. The excitement of drunken- ness, and the venereal excitement, are not uncommon causes of apoplexy, especially in old persons. I had a man of middle age under my care during the spring oif 1837, in whom a most awful attack of apoplexy came on under circumstances such as I have just referred to. He had dined at a large festive party, and afterwards accompanied a woman, with whom he was acquainted, to a brothel : and he was struck with palsy during the act of intercourse. He was long unable to speak; and he still remains, and probably will ever remain, a cripple ; incompletely hemi- plegic. I have been since consulted upon the case of an old gentleman residing in France, in whom an attempt at sexual connexion was attended with similar consequences. " The Gods are just, and of our pleasant vices Make instruments to scourge us." Posture, again, has no small effect upon apoplectic people. Giddiness, and some degree of confusion of thought, are apt to be occasioned, in most persons, by long stooping. There is one peculiar posture or position mentioned by Dr. Fothergill as being very unsafe, especially for short-necked persons, viz., that position which is assumed when Ave turn the head to look backwards for any length of time, without turning the rest of the body; in fact, a twisting of the neck. In this attitude the jugular veins are more or less obstructed. He gives an account of a man who was seized with apoplexy as he was crossing the Thames in an open boat ; he having kept his eye fixed upon a particular ship until, and after, he had been rowed past her. On the very same principle, tight ligatures worn about the neck, and compressing the ju- gular veins, may bring on apoplexy; the wearing a tight neck-cloth, for example. A continental writer informs us that a Swedish officer, who was desirous that his men should look well in the face, caused them to wear tight stocks, and the conse- quence was, that in a short time a great many in that regiment died of apoplexy. Dr. Abercrombie quotes from Zitzilius the case of a boy who had drawn his neck- cloth very tight, and was whipping a top, stooping and rising alternately. After a short time he fell down apoplectic. The neckcloth being loosened, and blood drawn from the jugular vein, he speedily recovered. There is one very powerful exciting cause of apoplexy, in those predisposed to it, which I need only refer to now, because the facts that have been observed in proof of its agency were fully detailed in a former part of the course ; I mean exposure to cold. You will recollect my teUing you that the number of deaths in London from apoplexy and palsy in the month of January, 1795, which was a bitterly cold month, very much exceeded the number in the month of January, 1790, which was a remarkably mild month. The cold operates in two ways, in the production of apo- plexy. In the first place it drives the blood from the surface, and accumulates it m the large vessels of the interior of the body, and so increases the stress upon the cerebral arteries. And in the second place, the cold has a great influence in causing or aggravating affections of the chest ; and the return of the venous blood from the head is impeded, in the manner just now explained, by fits of coughing and ob- structed respiration. This influence of external cold, and probably certain barometric conditions also ot 2c 326 DISEASES OF THE BRAIN. the atmosphere, hcip to explain, what I am sure I have several times had experience of, namely, the epidemic prevalence, now and then, of apoplectic seizures. There is an alleged exciting cause of cerebral hemorrhage, which I think it the more necessary to consider, because I believe that very erroneous notions prevail about it, even among pathologists of eminence. I allude to the imputed dependence of cerebral hemorrhage upon hypertrophy 9f the left ventricle of the heart. It has been supposed that the powerful contractions of a ventricle thus morbidly strong mav drive forwards the blood with such unusual force, as to strain and burst the cerebral arteries. Dr. Hope, in his very complete work upon Diseases of the Heart, uses these words : — " Instances of apoplexy supervening upon hypertrophy have been so frequently noticed, that the relation of the two, as cause and effect, is one of the best established doctrines of modern pathology." Similar opinions are entertained by the most distinguished of the French writers on this subject ; Andral, Bouillaud, Cruveilhier. I think they are all wrong : or that at least they state their proposition much too broadly and generally. ' I fully admit, no less from my own observation than upon the testimony of others, the frequent coincidence of hemorrhage of the brain and hypertrophy of the left ventricle of the heart ; but I distrust the reasoning which would always connect these events with each other as cause and effect. They may sometimes have that relation : but I have long thought that in most cases, if not in all, the coincidence is capable of being explained upon other and more satisfactory principles. In the first place, hypertrophy of the left ventricle of the heart is very frequently, far more frequentlj'- than not, accompanied by other structural changes of that organ : changes which imply some impediment to the circulation : changes which involve or influence its right chambers also. In fact, disease of the right heart is not very often seen, without disease of the left; and one of the commonest forms of alteration to which the left side is Hable, is hypertrophy of its ventricle. Now I have already pointed out to you the connection which sometimes subsists between cerebral hemor- rhage and such disease of the heart as obstructs the ready and regular descent of the blood from the head through the veins. Many of the cases of apoplexy occurring in persons who have previously had cardiac hypertrophy are, I really believe, cases of this kind. The brain affection is dependent, in part, upon disease of the heart, but not upon the preternatural strength of its left ventricle. The heart acts morbidly upon the brain through the veins, and not through the arteries. But there is another reason for the coincidence ; and here the arteries are con- cerned. No one can doubt that the momentum, with which the blood reaches the cerebral arteries, in healthy persons, under violent bodily exercise or mental excitement, must often exceed the momentum produced by a hypertrophic heart in the cerebral arteries of persons who are tranquil and at rest. But apoplectic seizures are frequent under the latter circumstance, infrequent under the former. We must look, therefore, foi something more than the mere hypertrophy to explain the coincidence. Now (sup- posing the absence of any check to the flow of blood from the head through the veins) that something is to be found in disease of the arterial system. When the arteries of the brain are ossified, or changed, and rendered brittle in the way I yesterday described, the coimnencement of the aorta also is found, in a great majority of cases, to be the seat of similar alterations ; and, often, to be sensibly dilated. Now the mere albuminous deposit beneath its inner tunic must seriously impair the elasticity of the vessel; and in this way the free passage of the blood out of the heart will be impeded. Dilatation of the aorta at that part will produce the same hindrance more certainly and in a greater measure. Still more effectually and obviously will any contraction of the outlet prove an impediment. It is in con- sequence of these mechanical obstacles to the free exit of the blood from the left ventricle, that the walls of that chamber, urged to more vigorous contraction, become thicker and more powerful. The hypertrophy is the natural compensation for the morbid state of the aorta; without it the heart would much sooner become unable to propel its contents at all : and the hypertrophy does not often, I fancy, become greater than is needful for its purpose. The strength of the left ventricle, therefore, in such APOPLEXY. 327 cases, is not a true measure of the force with which the blood is driven into the distant arteries. Q,uite the contrary. It is a measure of the difficulty with which the blood is circulated through the primary branches, and therefore through the entire system of the arteries. It indicates the diminished force with which the blood is likely to reach the cerebral vessels. And in point of fact, you will find in many cases of hypertrophy of the left ventricle — I do not say in all, but certainly in very many — you will find the pulse at the wrist to be disproportionately small and feeble. So that, in these cases, instead of regarding the cerebral hemorrhage as the effect of the hypertrophy, (acknowledging, as I do, the frequent coexistence of these morbid conditions,) I have been accustomed to look upon the apoplexy and the hy- pertrophy as concomitant effects of the same cause; viz., of disease pervading the arterial tree. The hypertrophy of the left ventricle is the effect of the diseased con- dition of the aorta at its mouth ; the cerebral hemorrhage is the effect of the same diseased condition of the arteries in the brain. When you find each of these lesions, and nothing to retard the venous current, you may, I believe, safely apply this ex planaiion of the occurrence of apoplexy. Having again referred to the frequent existence of disease in the cerebral arteries as a predisposing cause of hemorrhage Avithin the brain, I will just point out, before 1 leave this part of the subject, the light which that fact throws upon the circum- .-^lauce than sanguineous apoplexy is so peculiarly a disease of advanced hfe. Earthy concretions in the coats of the arteries are so frequent in the later periods of existence, that they are met with, according to Bichat, in seven individuals out of ten of those who die beyond the age of sixty ; and Dr. Baillie considered ossification to be much more common in old persons than a healthy state of the arteries. In the account which I have endeavoured to give you of the symptoms of apo- plexy, of the different modes in which the attack may commence, and of the various morbid appearances discovered within the cranium in the fatal cases, I have already embodied almost all that can be stated, with any confidence, respecting the special diagnosis and the prognosis of the disease. The one of these follows the other : the exact diagnosis being known, the prognosis is seldom difficult. By the diagnosis, however, I do not now mean simply the recognition of the disease as a case of apo- plexy : of that general diagnosis, of the means of distinguishing the coma of apo- plexy from the coma caused by opium or alcohol, I told you all that I know in a former lecture. But I use the term diagnosis now in a stricter sense, and in reference to the distinctions that exist between one case of apoplexy and another; and I say, that in proportion to the accuracy with which we may be capable of determining the precise condition of the contents of the skull, will be the facility of predicting the issue of the complaint. Let me remind you, then, that when a patient suddenly becomes apoplectic, we cannot tell whether there be effusion of blood, or effusion of serum, or no effusion at all within the cranium : and therefore the diagnosis must be precarious and uncertain. If, after the use of suitable remedies, the coma persists for many hours, the prognosis becomes worse. In those cases which begin with pain of head, faintness, and nausea, and which pass on to coma, the prognosis is posi- tively bad ; for the diagnosis is easy, and we are tolerably certain that a blood-vessel has given way, and that a large quantity of blood has ploughed up the substance of the brain. In the paralytic cases also, if coma supervenes, the prognosis is gloomy ; but frequently coma does not supervene, and then our prognosis, so far as life is con- cerned, may be pronounced favourable. Among the symiHoms that belong to the apoplectic condition itself, there are some which experience has selected as being most especially of evil omen ; and it is well worth your while to remark that these discouraging signs relate, almost all of them, to the automatic functions of the cranio-spinal axis. The open, fixed, unwinking eye; the explosive flapping of the cheeks in expiration ; the inability to swallow; the slow, sighing, interrupted breathing; the loosening of the sphincter muscles oi the bladder and anus ; these are fearful, and too often fatal symptoms, and they all depend upon the excito-motory portion of the nervous system. Perhaps the profuse sweat that so often attends the process of dissolution may be referred to the same source ; the whole tone of the various tissues being lost or relaxed. I would not say 328 DISEASES OF THE BRAIN. that no one of these symptoms is ever recovered from : but I may say that of twenty patients in whom such phenomena occur, nineteen will die. Now symptoms of this kind may be expected to arise, if there be hemorrhafre in or near the medulla oblongata; or if there be mischief so extensive in the brain as to cause pressure upon the medulla oblongata. We should reason out the hkelihood that such symptoms would be of bad augury. But the fact that they are so was ascertained long before the theory which accounts for them was devised. The fact is independent of the theory, and for that reason helps wonderfully to confirm it. The older writers entertained some very false notions in respect to the distinction between sanguineous and serous apoplexy. They laid it down that apoplexy result- ing from extravasation of blood within the cranium was denoted by flushing of the face, and strength of the pulse ; and that it was a disease of persons in the vigour of life: while apoplexy resulting from the effusion of serum was marked by paleness of the countenance, and weakness of the pulse ; and occurred in the old and the infirm : and they directed their practice according to this distinction. After what has already been said, I need not tell you that this classification of apoplexies could not have been founded upon the actual observation of disease : and that our treatment, now-a-days, is not regulated by any such erroneous theory. Nevertheless, I do not mean altogether to praise the modern practice in apoplexy ; for it is often one of mere routine. Practitioners are too apt, in this as in other instances, to be guided in their choice of remedies by the name of the disease, and to treat all cases of apoplexy alike. I remember being much amused by the per- plexity which a friend of mine once told me he had felt on being summoned by letter many miles into the country to see a gentleman who had been struck with apoplexy. As he posted down he earnestly revolved in his mind what he might be able to advise when he should reach the house of sickness. He felt confident that the patient must already have been copiously bled; cupped, or leeched ; blistered ; and thoroughly dosed with calomel, senna, and croton oil. Mustard poultices had doubtless been applied to his legs. My friend was distressed to think that while much would be expected, nothing would be left for him to do worthy of so long a journey, and so heavy an expense to his client. A clyster of turpentine might yet, perhaps, be an untried expedient. His Qogitations were cut short, however, and his cares relieved, by an express which met him half-way on the road, to announce that the patient was dead. Now this is the routine of which I speak: most proper in many cases ; unnecessar}' in others ; pernicious in some. There are persons who seem to think that they have not done their patient justice if any part of this active intermeddling has been omitted. Others reijard deplt'tion as being worse than use- less, and trust entirely to stimulants and cordials. These are still more dangerous routinicrs than the others: but they are fewer in number. Our practice would indeed be much easier than it is, if we could thus make one plan fit all cases which are nominally the same. But I need not now tell you that disease alike in name — aye, and alike in their essential nature — are ofttn widely difTorent in their circumstances. I formerly explained to you that certain symptoms tell us what the disease is ; but that we are often obliged to look to other symptoms ; which ma)'- inform us what we are to do. I know of no rule so likely to guide you aright as that laid down generally by Cullen, of obviating the tendency to death. You must examine and judge to which of the several modes of dying there may be any obvious approach. If tjie tendency be, as in cases of apoplexy it mostly is, to death by coma, then blood-letting and the evacuating plan will generally be requi- site. If, on the other hand, the tendency be to death by syncope, you must with- hold the lancet, and even have recourse to stimulating and restorative measures. The question is of the last importance ; involving often (as Celsus taught) the alternative of life and death : "sanguinis detractio vel occidit, vel liberat." Now the distinction between these modes of dying is to be made by attending to the state, not so much of the nervous, as of the sanguiferous system. Insensibilitj'' and unconsciousness are common both to syncope and to coma: and cases which fall under the ''lass of APOPLEXY. 329 apoplexies, and which we cannot separate from that class, are sometimes really more hke cases of concussion than any thing else ; the shock having been of internaj instead of external origin. If the pulse be full, or hard, or thrilling (sometimes it feels like a tense vibrating rope), or if there be obvious external signs of plethora of the head, you must abstract blood. You are not to refrain from bleeding the patient because he is pale, if his pulse warrants it ; nor may you omit taking blood if the head and face be turgid, although the pulse be small ; for that smallness may depend upon organic disease of the heart. On the contrary, if his skin is pale and cold, and his pulse feeble and flickering, you would probably ensure your patient's death, or determine the accession of palsy, if you withdrew from the failing heart and blood-vessels a portion of their natural stimulus. I can only invite your attention to these broad features of distinction. Being once taught to look for and attend to them, your own judgment must instruct you as to what may be needful in particular cases. To this, as to most other dis- eases, the remark of Boerhaave is strictly applicable, who declares that he knows of nothing which can be called a remecly, " quin solo tempestivo usu tale fiat." Having made up your mind as to the general indications of treatment, you will pursue them steadily in detail. If the patient to whom you are summoned be stupid and drowsy rather than faint, and his pulse and appearance warrant the conclusion 01 plethora capitis, the first thing to be done is to place him in a semi-recumbent position, with his head raised ; to loosen any tight parts of his dress, especially his neckcloth and shirt-collar, and whatever might press upon the neck; and then as quickly as possible to bleed him from the arm. We know that in some cases the apoplectic slate occurs, when as yet no injury has been done to the brain ; no effu- sion, no laceration of its texture ; and we may hope, by timely and vigorous mea- sures, to prevent these terrible evils. We never can be sure that there is blood exlravasated in such cases, and we must act, in the first instance, upon the presump- tion that there is not. We are especially encouraged to take away a considerable quantity of blood by venesection when we perceive external signs that the vessels of the head are full; redness and turgescence of the face, throbbing and prominence of the temporal arteries, distension of the superficial veins of the neck and forehead. Our object is to take off the strain upon the internal vessels by bleeding in such a manner and to such an amount as shall produce a decided effect upon the general circulation. Sometimes the good consequence of the bleeding is very marked indeed, so that no doubt of its propriety can be entertained ; the patient being so insensible as not to feel the puncture of the lancet, and yet emerging from his coma while the blood is still flowing. It is seldom, however, that we can expect such manifest and immediate melioration as this. After one siifficient bleeding from the arm, the vessels of the head may be further relieved by cupping the nape of the neck, or the temples ; and venesection may be repeated if the condition of the pulse, and the symptoms generally, should require its repetition. It is seldomer, however, in cases of apoplexy than in cases of acute inflammation, that a second or third recourse to the lancet becomes advisable: un- less, indeed, the first blood-letting has been mismanaged. Enough blood must be taken, in the first instance, to produce some evident effect; and therefore no precise rules can be laid down respecting the absolute quantity to be drawn ; nor can we make any sure estimate beforehand as to the whole amount of blood which it may be necessary to remove. Even if we could be certain that a blood-vessel had given way, and that blood Avas already poured out upon the brain, there are good reasons why (no adverse cir- cumstances withstanding) we ought to bleed our patient largely, and at once. I will enumerate briefly the benefits we seek to obtain by the abstraction of blood in such cases. 1. The effusion from the ruptured artery may be slowly going on. Ble.ding irom a vein, so as to make a sensible impression on the general circulation, will diminish the stress upon the cerebral arteries, and so tend to put a stop to the he morrhage. Both of these two objects are of primary importance. 2. By early and free bleeding we lessen the hazard of inflammation «upervt>nmg 2c2 330 DISEASES OF THE BRAIN. upon the mechanical injury done to the brain by the sudden tearing and contusior- of its texture by thc'effused blood ; and 3. We thereby bring the system into the most favourable condition for the rapid absorption of the extravasated blood, and for expediting the patient's recovery from those symptoms which depend upon the presence of the clot in the brain. But although, in that form of disease which we are now considering, bleeding is our sheet-anchor, it may be carried too far, or repeated too often. We must not lose sight of the fact that many of these patients are old, and will not survive undue deple- tion ; and that if they survive at all, they will need all the strength that we dare suffer them to retain for carrj'ing on the vital actions, when the chief instrument of the most important of the animal functions is so greatly damaged : nor of the fact that if there be blood extravasated, we cannot touch it, except indirectly, by the abstraction of more blood from the arm : nor of the fact that a patient may be bled into convulsions, and fatal syncope. In short, after the first free bleeding, you must be guided by the special circumstances of the case, and particularly by the pulse. The woman at present in the Middlesex Hospital, with paralysis of the limbs on one side, and of the face on the other, attributes her palsy (erroneously most likely) to her having been cupped. She had had a blow some weeks before, and suffered headache from that time. At length she was cupped, from the neighbourhood of the head ; and the next morning she was paralytic. This might have been an acci- dental coincidence. But I remember being sent for, a few years ago, to see a patient at Greenwich, who had alreadj' three physicians about him, and was apparently in danger of apoplexy, of which he had for some time experienced distinct warnings. The three physicians had agreed that he ought to be cupped from the back of the neck; to which I assented; and while blood was being rapidly extracted in that manner, he became all at once hemiplegic. Similar cases have been noticed by other persons. Therefore we are not to bleed without measure or discretion. The pulse may be small, and the arterial action feeble, while yet the veins are turgid, and the capillaries of the head and face loaded with blood. Changes may have occurred in the heart, such as to obstruct the stream which it is its healthy office to transmit. These are cases to which the local abstraction of blood from the head, by leeches and cupping-glasses, is pecuharly adapted. Again, the whole state of the patient may approximate more or less nearly to the state of syncope ; the pulse being weak, the aspect pinched and bloodless, and the skin cool. In this condition, no good, but the contrary, is to be expected from blood- letting of any kind. You will do better to apply warmth, cautiously, to the surface, and cautiously to administer what are called diffusible stimuli, of which the prepa- rations of ammonia afford the most eligible forms. Five grains of the sesquicarbo- nate or half a drachm of sal volatile, mixed with camphor julep, are ordinary doses. Stand by till the first stunning effect of the internal shock passes off; and careluily watch meanwhile for symptoms of reaction. In more ambicuous cases, when you scarcely can tell which way the baLuice inclines, I would advise you to wait the effect of the next remedies I have to men- tion, viz., purgatives, about giving which you need not entertain the same doubt and hesitation. Purgative medicines are of signal service in apoplexy. They empty the intes- tines, whicJi are oftentimes loaded, and which, by distending the abdomen, have occasioned, perhaps, undue pressure against the diaphragm, embarrassed the breath- ing, and through it the cerebral circulation. Another very important purpose of hard purtring, which I have frequently pointed out before, is the producing of copi- ous watrry discharges from the bowels, whereby the blood-vessels are drained, and the tendency of blood to the head especially relieved. If the patient can still swal- low, you may give him half a scruple of calomel, and follow it up by a black dose. Il the power of deglutition be lost, the croton oil becomes a most valuable remedy. Dr. Abercrombie suggests that it may be conveniently introduced into the stomach, suspended m thick gruel or mucilage, by means of an elastic gum tube. But really this is not necessary. If two or three drops of the oil be put upon the tongue, as far back as is possible, it will produce its speciiic effect ver}'' readily and v/ell But we APOPLEXY. 33 1 are not to wait for the operation of aperients given by the mouth. Strong purgative and stimulating enemata must be thrown into the rectum: half an ounce or six drachms of turpentine susperfded, by the help of the yolk of an egg, in gruel or >^arm water. We very often witness decided signs of amendment upon the free operation of a purgative. I may mention one instance of tliis while it is fresh in xny recollection. I was asked, a few evenings ago, by a medical friend, to see an old general, a patient of his. I found him in bed, comatose, though capable of being roused when loudly spoken to : but he j^resently fell off again into stupor. His respi- ration was peculiar. For a minute or two he would breathe, snoring strongly: then the breathing would cease altogether for half a minute or thereabouts : and then the stertorous respiration recommenced : and so on alternately. He had been found by his servant on the floor, nearly insensible, in the morning, having either fallen out of, or upon rising from, his bed. He had very properly been cupped ; and calomel and aperient medicine had been given : but the coma had been growing more profound all the afternoon. His bowels had been but scantily moved ; and the feces and urine were passed as he lay. His extremities were coldish. The pulse was neither full nor strong. I learned that for four or five years he had had some very significant warnings ; and within that period had suffered one or two slight apoplectic seizures, which had left him \\'iih impaired mind and memory. I recommended bhsters behind the ears, and two drops of croton oil, with two drachms of castor oil, in a draught. The next morning I expected to hear that he was dead; but I found him quite conscious, speaking somewhat inarticulately, witk the right side of his face chopfallen and inexpressive. There seemed no particular weakness of the corresponding extremities. The oils had been followed by copious evacuations from the bowels. The day afterwards he was sitting up, and so well that I took my leave. In combination with blood-letting and purgatives, cold lotions to the head are often found useful in this disease, especially if its surface is hot. I need not trouble you by rehearsing the modes in which the application of this remedy may be managed. Blisters near or upon the head, are also frequently of service, after due abstraction of blood, in rousing the patient from his state of coma. Formerly, at the suggestion, I fancy, of Dr. Fothergill, it was much the fashion to give an emetic in the outset of the treatment of apoplexy. But this also is a ticklish remedy, capable of doing good or harm according as it is well or ill timed. If there be already extravasation of blood, or even plethora capitis, the act of vomiting will be likely to increase the existing mischief, and to enhance the danger. On the other hand it may rouse and rally the nervous power when the patient is pale, and cold, and faint. Yet this can never be regarded as a legitimate purpose of emetics in apoplexy. They can safely be recommended in those cases only in which the coma may appear to depend, wholly or in part, upon a loaded stomach. Hence the propriety of giving an emetic will deserve consideration whenever an attack of apo- plexy follows close upon a heavy meal. When the immediate danger has passed by, and parslysis remains, we are not to be over-busy. If the palsy is to get gradually well, it must be by virtue of time, and the resources of nature. To young and strong persons I should, under such circumstances, give small and repeated doses of mercury : and in all cases I should prescribe aperient medicines, so as to keep the bowels freely open twice or thrice a du}- ; enjoin perfect quiet ; and put the patient upon ver_y short commons. Diuretics are also very proper when the urine is not plentiful without them. 1: ou will often have to contend against the ignorance and impatience of the sick, or of their friends, on these occasions. Thoy think that ivcakness is to be remedied by sircagthcning food ; by naeat and drink, and tonic medicines ; or if they are not so foolish as this, they will want to be electrified, or lo be put into a warm bath. Certainly in the earher states of the palsy that remains a'ter apoplexy, none of those measures ought to be permitted. If, after some time, when all febrile action has ceased, the palsy seems stationary, it may be warrantable and right to attempt to stimulate the torpid nerves, and to accelerate the acquirement of power by the mino 332 SPINAL HEMORRHAGE. over the muscular contractions ; but when any means for attaining these objects are employed at all, they must be used with the utmost caution ; for they are much more likely to stimulate the vascular system, and so to do harm : or even to n^new the apoplectic attack. Electricity, and strychnia, are the remedies most relied upon". In cases of long-standing palsy, it may also, no doubt, be proper to try to awaken, by stimulating frictions, the dormant powers of the muscles, which by protracted inaction becomes forgetful, as it were, rather than incapable, of their natural otfice : and in these old cases we sometimes are able to benefit our patient's condition by the cautious exhibition of some of the preparations of iron. I LECTURE XXXI. Spinal Hemorrhage. Paraplegia. Facial Palsy and Facial Ansesthesia ; their Symptoms, Prognosis, and Treatment. Other Forms of Local Paralysis, and Local Anxsthesia. I HAVE done with apoplexy as it respects the brain ; which is the same thing as to say that I have done with apoplexy. You will find the same term applied, indeed, to effusions of blood in other organs of the body ; but this use of the word is a per- version of language. Apoplexy, as I have frequently observed before, is the abolition of the functions proper to the brain; of sensation, voluntary motion, and thought. In short, it is coma, coming on under certain circumstances. I shall not speak therefore of spinal apoplexy (though that would be less improper than pulmonary apoplexy, or hepatic apoplexy), but of spinal hemorrhage. Of this I really have little to say, except that it is well known occasionally to occur ; and that the symptoms to which it gives rise are by no means peculiar or distinctive. They consist of pain in some part of the spine ; compulsions ; palsy ; that is, they are the very same symptoms which inflammation, softening, mechanical injury, and other disorders of the same part may produce. Spinal hemorrhage is much more rare than cerebral hemorrhage. Dr. Abercrombie had met with only one case of it. He gives the heads of seven others which have been recorded by different authors. Dr. Bright has never seen it: but he publishes the particulars of one case, which were communicated to him by Dr. Stroud. I will read you one or two short examples of spinal hemorrhage, as specimens. A girl, fourteen 3'ears old, was attacked with headache, /)f/m in the back, and a ten- dency to sickness in the erect posture. At the end of a week the pain in the back became suddenly and very greatly aggravated ; and this was followed by general convulsions, which proved fatal in five or six hours. The spinal canal was found filled with extravasated blood, in the lumbar region, where she had felt the pain. The brain and all the other viscera were sound. The case is detailed by JVIr. Chevalier in the third volume of the Medico-Chirurgical Transactions. Take one more instance from OUivier, whose work on the spinal marrow you may read hereafter, when you have leisure, with advantage. A. gentleman, aged sixty-one, had just arrived in Paris after a long journey, when he was seized with pain of the back, all the way down from the cervical vertebrce \o the sacrum. In the course of a few hours he became paraplegic, and was unable to retain his urine or feces. He then sent for a physician, and died while talking to liim A very extensive extravasation of blood was found in the spinal canal, beneath the membranes of the cord. The lower part of the canal was filled with a bloody mass, in which the substance of the cord could not be distinguished. Above the ih'rd dorsal vertebrae the cord was entire, but of a deep-red colour, and very soft. The suddenness of the symptoms may lead you to suspect the true nature of these cases ; but I cannot pretend to point out any other feature by which they may be distinguisnea from other morbid conditions of the spine, already spoken of. T show vou one prejiaration ; of which, however, I do not know the history. PARAPLEGIA. 333 I have nothing to add, to what I have already said, respecting that species of palsy which is called" hemiplegia : and I have only a very few further observations to make in regard to paraplegia. The cause of this kind of palsy is sometimes obvious ; sometimes most obscure. If we find, in the spinal canal, blood effused, softening of the substance of the cord, traces of inflammation of its investing membranes, tumours pressing upon it, pressure from disease or displacement of the bones, we have a sufficient explanation of the paralysis of those parts of the body, the nerves of which come from the spinal marrow at or below the place of the disease. There are three preparations on the table of tumours that pressed upon the cord ; scrofulous tumours I believe they are • each of the three persons from whose bodies they were respectively taken was more or less completely paraplegic. But in very many cases we detect no alteration that seems adequate to explain the paraplegia. The palsy creeps on slowly and insidiously, without any particular pain, or violent symptoms : there is no tenderness or bending of the vertebras. The weakness commences mostly in the legs, which appear to the patient heavier than usual, and of which the healthy sensations are often perverted. The toes tingle, or are numb : he experiences a feehng in them as if a number of ants were crawling on the skin. This is so common a circumstance as to have given a name to the symptom, formication. The patient straddles as he walks. His legs are lifted awkwardly, the toes being often the last part to quit the ground : they are then flung obhquely forwards and outwards, and the feet flap doAvn heavily and uncertainly at every step. By degrees the weakness of the lower limbs increases : the palsy creeps upwards, affects the bladder and rectum, at length invades the arms, and ultimately the patient dies : yet very faint traces of disease, or no traces at all, may be visible upon inspecting the brain and spinal cord. The commonest morbid con- dition is softening of some portion of the cord ; and this is also the condition which is the most liable to be overlooked. Very recently I had a patient with these symptoms in the Middlesex Hospital. He went out contrarily to my wishes ; he was discharged, in fact, by mistake : he took refuge in St. Bartholomew's, where he died after a few days. I have been informed that serum was found beneath the arachnoid, and that the whole brain had a wasted appearance ; but nothing satisfactory was made out. The palsy had by slow degrees ascended from his legs to his arms ; he had had no head symptoms beyond some occasional confusion and vague uneasy feelings there. At this present time a patient in a similar condition comes to the hospital every Thursday, dragged by a friend in a hand-chair. He looks very well in the face, but is help- less below. It is in these cases that you may expect to witness the very remarkable pheno- mena which I mentioned before as evincing the separate existence of a " true spmal marrow," distinct from the brain and its prolongations into the spinal canal, endowed whh special and peculiar properties, and performing functions that are independent of sensation, of consciousness, and of the will. If you pinch or tickle the surface of the paralytic members, or apply a hot spoon to the sole of one foot, the limbs will, in many cases, start up and move strongly, not only without any voluntary effort on the part of the patient, but in spite of him; or even (in those instances in which there is anaesthesia as well as palsy) without his knowing it. The legs often spring up of their oivn accord as it seems ; but, no doubt, the apparendy spontaneous movement is frequently an excited movement, and takes place in obedience to the lavv that governs the automatic motions of the body. Some impression, made first upon the peripheral extremities of afferent nerves, runs through the nervous arc of communication, and exhibits its uUimate effect at the extremities of the corresponding efferent motor nerves. We can imagine many such accidental and unsuspected sources of excitement ; a casual touch, the varying contact of the bed-clothes, the bite of a flea, for aught I know to the contrary, may suffice. Even the passage of faeces or of flatus along the lower bowel, or of urine through the urinary passages, may be enough (as we are taught by unquestionable, facts) to produce these move 334 PARAPLEGIA. ments. They are more readily excited, cssteris paribus, in proportion as tlie inter- fering- influence of the will is more completely cut off. I knew a gentleman, who had retired from the medical profession, and who, though not paraplegic, laboured, I believe, under some morbid condition of the spine. He had been, in early life, a hard drinker, and had suffered dehrium tremens. Every night, sometimes more than once or twice, the trunk of his body, and all his limbs, became for a while fixed and stiff, from rigidity of the muscles. A few days before his death, he told me this curious fact. Whenever he scraped his shoes on thf. scraper at the door, his leg flew up, with a spasmodic suddenness from the iron, not- withstanding his endeavour to prevent it. He died suddenly. I believe he was found dead in his bed. In some cases of paraplegia involuntary retractions of the palsied limbs can be excited ; in some cases they cannot. When the influence of the cerebrum is quite excluded by the operation of disease affecting the spinal cord itself, then is the sus- ceptibility of excited movements the most lively. But the increased susceptibility Avhich has this inverse relation to the voluntary power, is limited to that portion of the body, the nervous arcs belonging to which lie beyond the seat of the disease ; more distant, I mean, from the brain. Hence it follows that we may determine, approximately, the place of the disease, by the test of these reflex actions. The mischief may be situated, or may extend, so low down, that there are no unin- terrupted nervous arcs below it. Supposing it to lie as low as, or to reach, the com- mencement of the Cauda equina, we should have no involuntary movements. Conversely, when no involuntary movements can be excited, the spinal disease is, at least, as low as the upper lumbar vertebrae. Thus, I say, we have another mode, in addition to those pointed out in a former lecture, of determining, in a given case of spinal palsy, whereabouts, or to what extent, the cord is implicated in the disease. We do not so often observe these reflex movements in cases of hemiplegia ; apparently for this reason, that in hemiplegia the sensorial influence is not, usually, so completely shut out as it is apt to be in paraplegia. Yet I have seen some of these phenomena in several hemiplegic patients. One of them, whose right hand and arm were quite passive under the strongest efforts of his will to stir them, took notice himself, as did his nurse, that whenever he yawned and stretched himself the lingers of the palsied hand participated in the action, and were thoroughly extended : and I could, by tickling the sole of his foot, excite some starting of the leg, long before any power of voluntary movement returned. Emolion has sometimes the same singular effect upon limbs and muscles over which volition has no dominion whatever. An artist with whom I am acquainted, and whose arm was almost completely powerless after a recent attack of paralysis, do that no effort of his will sufficed to raise it from his side — was one day startled, as he Avas hobbling across a road, by the unexpected approach of a carriage. He noticed, with wonder, that during his endeavours to get out of the way, the palsied arm was' suddenly jerked up above his head. But he could not again lift it there after the fright was over. Paraplegia has been ascribed to some primary morbid condition of the nerves which belong to the spinal cord. That the functions of the efferent, or motor, nerves may be impaired, and even arrested, by exposure to cold, and by other injurious mfluences, is both possible and probable. But a diseased or disordered state c/ the afferent nerves has been assigned as a cause of the palsy. This is less clearly con- ceivable. Coexisting disease of the kidneys, and coexisting enteritis, have been thought suflicient to produce and keep up a paralytic condition of the lower limbs. Tne extremities of certain incident nerves being affected, a morbid impression is transmitted to the cord, suspensive of its central function. The efforts even of voli- tion, which come from the brain, are no longer successful. Such is the theory. I it prove, and the more room is there for hoping that it will end favourably. When the disorder arises from exposure to cold and damp, it comes on much TETANUS. 349 earlier; often in a few hours. If, for example, the exposure takes place during the night, the complaint may begin to declare itself the next morning. Although tetanus may be excited by a wound, independently of any exposure to cold, or by cold without any injury, there is good reason for thinking that, in many instances, one of these causes alone would fail to produce it, while both together call it into action. After the disease has set in, its rate of progress is various. Almost all writers divide it into acute and chronic tetanus. But the difference is merely in the degree of severity. When the spasms come on suddenly, recur often from the beginning, and increase in frequency and violence, the chance of recovery is but small. The patient, in thete cases, sometimes dies on the second, and generally before the fifth day. If he li /es to the ninth day of the disease, his prospect is somewhat better, and the spasmodic symptoms may gradually abate and disappear. Some, however, have died as late as the sixteenth, the twentieth, and even the thirty-fifth day : but this last is very rare. The idiopathic tetanus, or that which is produced by cold, although it commences earlier, is more generally of a chronic character than the traumatic : that is to say, the spasmodic contractions take place more slowly, and the paroxysms do not increase in violence, and in rapidity of recurrence, as they are apt to do in the symptomatic variety : and accordingly this form of the malady is much oftener, I dare not say cured, but recovered from, than the other. With respect to the diagnosis of tetanus, there is only one point in which it is at all ambiguous or important. There is no other disease that is likely to be confounded with it, except, perhaps, that extraordinary disease, hysteria, which sometime?: mimics its phenomena. I have already alluded to one example of this kind that I myself saw. But there is a form of poisoning that may easily be mistaken for teta- nus. The symptoms produced by a poisonous dose of strychnia, or its salts, or the vegetables from which it is procured, are the symptoms of tetanus. And as this drug is now readily obtained, and its noxious qualities are well known, it is not un- likely to be made an instrument of suicide, or of murder. It is necessary, therefore, that you should be acquainted with the effects of this poison, which constitutes the active principle of the nux vomica, the fama S'' Ignatii, and the ifpus tieute. Dr. Christison has excellently well described these effects as they are observable in brutes ; and I have once, by accident, had an opportunity of witnessing them in the human body. I shall not be wandering from our present subject, if I enumerate the symptoms to be expected from a large dose of strychnia, especially as I have lately been advising you to make trial of it as a remedy in certain forms of disease. Dr. Christison, who had made experiments with it upon animals, tells us that the crea- ture " becomes agitated, and trembles, and is then seized with stiffness and starting of the limbs. These symptoms increase, until at length it is attacked with a fit of general spasm, in which the head is bent back, and the spine stiffened, the limbs extended and rigid, and the respiration checked by the fixing of the chest. The fit is then succeeded by an interval of calm, during which the senses are quite entire, or unnaturally acute. But another paroxysm soon sets in, and then another and another, till at length a fit takes place more violent than any before it, and the ani- mal perishes suffocated." Some time ago I had occasion to prescribe the strychnia for two patients in the Middlesex Hospital, both of whom had paraplegia. I directed one grain to be inti- mately mixed with crumb of bread, so that it might be divided into twelve pills: and one of these pills, or one-twelfth of a grain of strychnia, was to be taken by each patient every six hours. Unluckily, through mistake or negligence of the per- son who was at that time the dispenser, a grain of the poison was administered at once to each patient. It was given about seven in the evening. At half-past seven It began to produce its characteristic effect upon one of the patients. He was sud denly seized with tetanic spasms ; his legs were separated widely from each other, and rigidly extended : and his head and trunk bent backwards. He was, in fact, in a state of opisthotonos. His abdomen was quite hard, and his limbs were stiff', even when the violence of the paroxysms abated. He cried out with the pain at 2b 350 TETANUS. the coming on of these spasms. Any attempt at movement, even the touchmg him by another person, brought them on. This is just what happens in the disease The opening of a door, a sudden current of air, the smallest bodily effort, the act of swallowing, nay, even the imagination of these influences, will be sufficient to renew the spasmodic tightening of the affected muscles. My patient spoke of a particular sense of constriction all over the abdomen, as if it were drawn in. His intellect was quite unaffected. He had two extremely violent attacks of the kind 1 have been describing, in which he thought he should have died : and to say the truth I was myself horribly afraid of the same catastrophe. Afterwards, from half-past eight o'clock to between eleven and twelve, he had several slighter and shorter fits. He was left weak and exhausted by them : but he soon recovered. I may as well tell you that his paraplegia was not a whit benefited by this violent action of the remedy. You may suppose that when I found one of my patients in this alarming state, I became very anxious to ascertain the condition of the other, who had taken the same C|uantity of the strychnia, and lay in another ward. He told me that he had been for a short period very dizzy, and had trembled all over ; and at the time when I saw him, he had a weight or uneasy sensation at the nape of his neck, which drew his head backwards ; and he experienced some difficulty in opening his mouth, and in articulating his words. But he thought these symptoms were diminishing rather than increasing. He was perspiring profusely. It is stated by Dr. Chrislison, that if the spasms do not come on Avithin two hours after the poison was swallowed, the patient is safe. It was more than two hours since tliis patient had taken the strych- nia. I gave him a full dose of purgative medicine, which acted as an emetic: and, after he had vomited, the unpleasant sensations about his head and neck left him. I scarcely knew what to do with the other patient, in whom the spasms had com- menced. There is nothing satisfactorily made out, that I know of, concerning the mode of treating such cases. Of course, if one saw the patient early, and knew what he had swallowed, the first thing to be done would be to procure its evacuation from the stomach. But here it had had full time to get into the circulation : and no emetic could have withdrawn that part of it at least, which had already found its way into the blood-vessels. When I reached him, though the spasms were strong, they were less violent than they had been, and their violence seemed upon the wane : but they were brought en by any, almost the slightest, muscular effort, or change of position. I hoped therefore that the most dangerous period was passing off (and so it turned out), and I was fearful of doing harm by exciting those movements of the body which accompany the act of vomiting. I recollected, too, that another patient in the hospital, under the care of one of my colleagues, had once been attacked with opisthotonos after taking half a grain of strychnia ; and that brandy and water had been given to him ; and that he got well from that time, without having another paroxysm. So I gave my patient some brandy and water ; and he seemed the better for it : but whether or no it contributed much to his recovery I cannot be sure. Now how are we to tell, when we meet with such symptoms as these, whether they are the result of disease, or of poisoning? The symptoms are the symptoms of tetanus ; I know of no means of distinguishing them from the symptoms of tetanus caused by exposure to cold, or supervening upon a wound. Dr. Christison has suggested that the cases of fatal poisoning by strichnia that are quickly fatal, are fatal in a shorter time than the disease ever is. But if the case related by Professor Robinson, in which the negro was dead in fifteen minutes, is to be regarded as a genuine instance of tetanus, this distinction, drawn from the rapidity with which the poison kills, will scarcely hold. Again, persons who have taken an over-dose of strychnia sometimes survive the tetanic symptoms, but die afterwards from the irritant efft'Cts of the poison upon the mucous membrane of the alimentary canal. This we do not observe in the disease. In suspicious or questionable cases, we must look into the history of the 'patient ; inquire whether he were likely to wish to destroy himself; what he last swallowed, and when it was taken; whether he has lately been exposed to the injurious influence of cold, especially to a stream of cold air *bile he was perspiring; and whether he has recently received any bodily hurt. TETANUS. 351 By a careful investigation of all the circumstances, we shall generally be enabled tr decide the true nature of the case ; but it is clearly necessary that our eyes should be open to the possibility of a case of poisoning, by some of the preparations of strychnia, being palmed upon us for a case of natural disease. The pathology of tetanus is undoubtedly obscure : but not more so, I conceive, than that of those nervous diseases in general which produce violent symptoms, and even death itself, without leaving any traces of their operation inscribed upon the dead materials of the body. Nay, it is not so obscure as several others. I think we may fairly come to the conclusion that the symptoms result from irritation of the spinal cord, or of its afferent nerves ; and that the bruin is not involved in the disease. The French (at least some of the most modern writers on tetanus) hold that it is always an inflammatory complaint ; and that it consists essentially in inflam- mation of the spinal marrow : and some of them have sought to remedy it by enor- mous blood-lettings; from fourteen to fifteen pounds of blood being taken in the course of a few days by one practitioner; and another bleeding his patient eight times, and applying 792 leeches along the course of the spine, and to the epigas- trium. But this do'ctrine of inflammation being at the bottom of every case of tetanus is contradicted by the plainest facts ; and the practice founded upon it has been pushed to a most extravagant and absurd extent. Numberless instances occur of inflammation of the spinal cord and its membranes without any tetanus ; and equally numerous examples of tetanus have been met with, when no Unnatural appearance at all could be discovered within the vertebral canal. I say we must content our- selves with referring the phenomena of the disease to irritation, direct or indirect, of the spinal cord ; or its nervous appendages ; and I am quite proof against all sneers against the alleged vagueness of that term. If you irritate, mechanically, by means of a pair of forceps, the exposed spinal cord of a recently decapitated animal, a turtle, for example, you produce spasmodic contraction of the hmbs.. What difficulty is there in supposing that some mechanical irritation existing within the spinal canal of a living man may have a similar effect ? It may be, and probably is, sometimes, the mechanical irritation caused by the altered state of the blood-vessels under inflammation ; for we sometimes find traces of such inflammation in the spinal marrow after death by tetanus. Again, if you irritate, by pinching, one of the spinal nerves of a turtle whose head has just been cut off'— if you thus irritate one of these nerves in any part of its course, what happens? why the muscles of the hmbs contract spasmodically; those on the side to which that nerve belongs becomes rigid, and those on the other side also. That property of the cord comes into play which I have so often men- tioned : a property which it possesses independently of the brain ; which it evinces when all communication with the brain is cut off"; a property, therefore, which may be manifested without any exercise of volition, and even in spite of efforts made by the will to restrain its manifestation : I mean, of course, the property whereby it is capable of receiving impressions through the medium of its afferent nerves, from parts at a distance, and of originating motion in the muscles of the trunk and limbs through the medium of its efferent nerves. By the courtesy of Dr. Marsha.l Hall I have been afforded the opportunity of witnessing, in the headless turtle, the phe- nomena that I have been describing to you. Surely they throw a broad light upon the pathology of tetanus, and of sundry other affections. We infer from them, most legitimately as it seems to me, that the tonic spasm which characterizes the disease we are considering may be caused by a diseased state of the spinal marrow itself; or by a morbid condition of the nerves that belong to it. In the latter case, irritation is set up at the free extremity, or somewhere in the course, of incident nerves ; along these nerves an influence is conducted to the cranio-spinal axis, in which a process or change takes place, whereby an answering influence is reflected to the muscles along the motor nerves, and the whole circle of action and reaction is run through with the suddenness and swiftness of lightning, or of thought. You cannot expect that visible marks of the irritating cause should, in all cases, be left upon the body any more than you could discern the pinch made by the forceps after they wer«i withdrawn. 352 TETANUS. When, in the experiments to which I have referred, Dr. Hall plucked or com- pressed one of the denuded spinal nerves, spasmodic motions were excited in the muscles of both sides ; and above, as well as below, the junction of that nerve with the cord. This shows that the change (whatever it be) that is wrought in the cord by impressions made upon one of its afferent nerves, is not necessarily confined to the corresponding segment of the cord ; but may be instantly communicated, in both directions, throughout its entire course : the whole of this centre of the excito-motory system, respondmg to the influence conveyed by a single nerve, as completely as a tight string vibrates from end to end, when struck at any one point. We frequently, indeed, find that the excited motions are more limited ; but it is important to mark this ready consent of the whole cord, under sufficient excitement. Dr. Hall has given certain distinguished epithets to tetanus, according to the sup- posed source and locality of the irritation. When the irritating cause operates directly upon the spinal cord itself, he calls the disease cm/?7'c tetanus: when it resides in some part of the body distant from the spinal cord, he calls the disease eccentric tetanus. These are good and intelligible names ; and I shall take leave to adopt them. Observe now how well this explanation meets the facts of the case. We some- times find the spinal cord or its membranes inflamed, when there has been teianic spasm. We then refcr the spasm to the centric irritation. But in a far greater number of cases we can detect no marks whatever of disease in the spinal canal, while we know that an irritating cause has been applied to parts at a distance. Often we have evidence which is visible, that a nerve has been injured, torn across perhaps, or half torn, or compressed in some way or other; just as we might com- press a nerve, with a pair of forceps, in a decapitated turtle. That experiment shows us that very slight irritation may be enough lo produce the spasmodic action ; and we find that slight injuries, as well as severe, will bring on the disease, when, by the operation of certain injurious agencies, the frame has been predisposed, and rendered morbidly susceptible. There is no part of the trunk or limbs which is not supplied with nerves from the spinal cord ; and we find that injuries of various parts, or of almost any part, in an individual predisposed to take on the disordered action, may produce it. The exciting cause may be a wound irritating a particular nerve ; it may be exposure to cold, acting upon the extremities of various nerves that pro- ceed from the surface : it may be a bundle of worms, irritating the nerves spread upon the mucous tissue of the alimentary canal ; for I omitted to state before that some writers, especially MM. Laurent and Lombard, have maintained that tetanus is almost always, even when it supervenes after wounds, the result of the presence of worms in the digestive organs. They have founded this opinion upon the fact, that-worms have been very frequently indeed discovered in the stomach or intestines of persons dead of this disorder. I think this a point well worth attending to. It is objected that worms infest the human body without causing tetanus : but the very same thing may be said of the operation of cold ; and of external injuries. Any of f.hcse may probably excite the disorder, when the body is preternaturally susceptible of it. The real mystery lies in this predisposition. We have reason to suppose that a high atmospheric temperature, continued for some time, is one predisposing rause ; but how it operates, or what is that state of system in which the increased susceptibility consists, these are points concerning which we are really in the darlc The disease is common enough in brutes : and it is frequently eccentric in them ; brought on by injuries, mostly of the extremities. Locked-jaw is well known in the nosology of farriers. It is not uncommon in the horse after castration. I remember a mare belonging to my father dying of that disease a few days after foaling. It o'tcn results, in these animals, from a prick in the foot by a nail in shoeing. Dr. Parry noticed eccentric tetanus in lambs. "I have often seen lambs," says he, •' whose ears, for the purpose of marking them, have been bored with a red-hot iron too near the root, so rigid all over with tetanus, alternating with convulsions, thai '.heir bodies would project in a right line with their hind legs, when one held them f^ut horizontally bj"- the hind feet." Dr. Mason Good tells us that parrots abo are TETANUS. - 353 frequently affected with trismus : a calamity which, supposing the bird to be within ear-shot, it would be difficult to commiserate. We are not advancing any wild theory, then, respecting the controverted patho- log}' of this disease, when we lay down the following propositions : that it is essen- tially a disorder of the excito-motory apparatus ; that it results from irritation of a peculiar kind, affectincr that part of the nervous system ; that the irritating cause rnay be centric, — within the spinal canal itself; and that it may also be, and often is eccentric, — situated at the extremity, or somewhere in the course, of one or more of the afferent spinal nerves : and that a certain predisposition of the body is for the most part necessary, to render it susceptible of the disease under the operation of the exciting irritation. At one time it was supposed that the physical cause of the disease was detected, in the presence of more or fewer thin scales of bony matter, lying in or upon the arachnoid of the cord. I have myself seen these after death preceded by tetanic symptoms. But tetanus often happens and proves fatal without them : and they are often rnet with when there has been no tetanus. If, therefore, there be any connec- tion between these thin plates of ossification and the occurrence of tetanus (which may well be questioned), it must be of this kind ; that the scales of bony matter predispose the spinal cord, somehow, to be affected by the exciting causes of the disease. The doctrines recently propounded by Dr. Marshall Hall, of which the import- ance becomes daily more apparent, and by which his name will be enduringly con- nected with the physiology of the nervous system, receive a strong confirmation from the phenomena of tetanus. They furnish a key to many })roblems which had pre- viously perplexed the pathologist; and they do this simply by distinguishing the proper functions of the two distinct nervous centres ; the brain and the spinal cord. But the practical application of these new views is yet in its infancy. The treatment of tetanus is a mortifying subject. The disease is and has always been a lamentably fatal one. Hippocrates says, fTtt rpco^aTt. cnm^oi iTivyevowrioi, ewvaai^Lov, tetanus supervening on a wound, is mortal: and the aphorism holds true, with very few exceptions, in the present day. Almost all the acute and severe trau- matic cases are fatal. Hennen declares that he never saw a case of "acute symp- tomatic tetanus" recover. Dr. Dickson found all curative measures followed by "unqualified disappointment." Mr. Morgan uses these words; "I have never yet seen or heard of an instance of recovery from acute tetanus." Another of Hippo- crates' aphorisms is oxouot. vno -ti-COA'ov aXiaxwfat, tx tsaaa^aiv ^^fpjjffti' artoXXvvtM, they who are seized with tetanus, die within four days ; but he adds, fjv Ss ■fowraj Sia^vyuctc iytsii ywovtat; if they get over this period they recover. And to this Ave can only add now, that those who survive the first few days, and ultimately get well, recover in a variety of different ways, and under various modes of treatment. But as to the mode of treatment which is to be preferred, or even as to the real efficacy of any mode, thi-^re is much room for doubt. Under every plan of management a vast majority die. Let us briefly pass in review the principal remedies that have been tried, and inquire what degree of success has followed their employment. One drug from which much benefit has been hoped for, is opium. In some spas- modic disorders it is of unquestionable service. Very lartje doses of it have been given and borne in tetanus; and some have recovered under its use, and more have died. It is well known that pain fclifies the nervous system against the peculiar influ- ence of narcotic substances. We need not, therefore, be surprised that opium, admi- nistered in enormous quantities, in this painful disease, has had but little efl^-ct. I was, assured by a physician, with whom I formed an acquaintance in Edinburgh some years ago, and who is known, I find, to a student now present, that his own wife, while labouring under a tetanic affection, swallowed, in twenty successive days, upwards of 40,000 drops of laudanum, which is at the rate of more than four ounces a day ; in all, more than two imperial quarts. The lady recovered. A case is recorded in the second volume of the Medico-Chinirgical Transactions, in which 23 2 E 2 354 TETANUS. an ounce of solid opium was taken, in divided doses, every day, for t\venty4wo days. This appears a more astounding instance than the former ; but I am not sure that it was so ; for, in this complaint, solid opium does not always dissolve in the stomach. I have heard the late Mr. Abernethy say that he had found enough un- dissolved pills of opium in the stomach after death, to poison a dozen healthy per- sons. This fact should teach you, if you resolve on trying opium at all, to exhibit it in a liquid form ; laudanum, or a solution of the acetate or of the muriate of mor- phia. And wath the internal administration of opium, it would be well, perhaps, to combine its external use ; to apply a broad strip of opiate plaster along the whole length of the spinal column. It is sometimes a difficult matter to introduce medicine by the mouth, so strong is the spasmodic contraction of the muscles that close the jaws. You cannot get the mouth open. Some persons set to work to heave it open, by levers ; and it has been proposed, and I believe practised, to break off or extract a tooth or two, to make a passage for the introduction of medicine and of nourishment; but 1 hope you will never be guilty of such clumsy barbarity as this. Food, and physic, may be carried into the fauces and into the stomach by means of a flexible tube : and this may be inserted through the nostril ; or through the mouth, by passing it between the jaws, behind the back teeth, where there is always an aperture that will admit a tube suffi- ciently large. After all, in respect to the cures that have been ascribed to the opiate treatment, they have all (so far as I know) occurred in cases of the milder or more chronic tetanus ; and mostly in the idiopathic form of the disease ; and this circumstance makes it a question whether they were cures at all : whether they w^ere not simply recoveries. Dr. William Budd (in the paper already referred to) challenges the propriety, on phj-siological principles, of giving any opium in this disease. He says, " It has been ascertained that the effect of that drug is to excite, and not to quiet, the motor func- tion of the spinal cord : indeed, it is well known that the motor acts of the cord may be rendered much more active and powerful, by giving, before decapitation, opium to animals that are to be subjects of experiment." He considers " these objections, furnished by theory, to be motives sufficient for the future exclusion of opium from the treatment of tetanus." I had long been aware that the effect of opium upon frogs was to produce tetanic spasms. But in no case of poisoning by opium in the human subject (and I have seen a great many) have I ever witnessed any approach to tetanus: and I much question the safety of arguing, in such matters, from what we know to happen in the mferior animals, to what we suppose would happen in man. The failure, however, of opium in the severer forms of the malady, and its equi- vocal utility in any, taken together with these theoretical objections, prevent my recommending opium as a remedy for tetanus. What is the result of experience in regard to blood-letting in tetanus ? I am afraid that as a curative agent, it has very little power over the disease. Yet it may be, and probably is, of considerable use, as an auxiliary to other measures. When the disorder bears any aspect of inflammation — when, for instance, fever is lighted up, and pain is felt along the course of the spine, or when the approach of the spasm is marked by the supervention or the increase of pain in the wound — then our chance of doing good by venesection is the greatest. Some of the cases that happened in the Peninsular war, were decidedly benefited by blood-letting practised under such circumstances. I need scarcely say that though the bleeding, when adopted, should be enrly, free, and full, so as to produce some sensible impression upon the system, yet we must always use this remedy with caution. The tendency of the disease is to exhaust the power of the heart ; and if by one over-bleeding we bring that organ 10 a stand-still, it may refuse to begin agiin. In a complaint whic'^ depends so much on irritation, and so often on manifest .rritation of external parts, we look naturally to the icarm bath for help. And ii hcLs been fairly tried : and some persons have found it useful ; and others have TETANUS. 355 found it useless, doing neither good nor harm : and some have condemned it as actu- ally hurtful. The cold bath has been extolled as a much more powerful agent than the warm , and so, doubtless, it is. But it is more potent for harm as well as for good. For example : a tetanic patient, in St. Thomas's Hospital, was plunged into a cold bath, at his own request. "All the symptoms disappeared (says Mr. Morgan) in a moment ; and he was almost immediately taken out of the bath : but he was taken out life- less." Sir James M'Grigor says that, during the campaign of Spain, "the warm bath gave only a momentary relief; and the cold bnth was worse ihan useless." However, the application of cold water to the surface has, in many recorded instances, been of at least temporary benefit and comfort : and, in the West Indies, where the disease is common, the cold effusion still continues, I believe, to be tho most favourite expedient. After it, the patient is rubbed dry, put to bed, and has laudanum administered. I have again to observe, of this remedy also, that it is chiefly serviceable in the idiopathic form of tetanus. It has been tried upon animals. Dr. Parry says that it was quite unavailing in the case of certain lambs that had the disease. In a note, which I made at the time, of Mr. Abernethy's lecture on teta- nus, I find the following statement. "The effect of cold in diminishing excessive muscular action was strikingly shown in the case of a horse belonging to Professor Coleman, which had tetanus. The animal was slung, and carried out of the stable, and laid on the snow, which was then on the ground : and he was covered over with snow also. A horse affected with tetanus is a curious sight. His legs straddle, and become stiff'; his ears are pricked up ; and his tail sticks out. In this case, on the application of the snow, his ears sunk, his tail became pliant, and the rigidity of his muscles was removed. He was again taken into the stable, and the spasms returned." Mr, Abernethy said, that were he himself the subject of tetanus, he would desire to have the cold effusion tried. If you are wiUing to assay the same remedy, do not plunge your patient into a cold bath, but take him out of his bed on an extended sheet, pour cold water over his body, wipe him dry, and place him in another dry bed. This will often, for a time at least, diminish the spasmodic action; and the patient will sometimes sleep comfortably after it. Dr. Todd has suggested to me the application of ice to the spine ; a measure which he has found eminently beneficial in convulsions. This mode of employing cold as a remedy in tetanus seems well worthy of trial. It would have the "advan- tage of not inflicting any shock which might excite or disturb the reflex function of the cord, through its incident nerves. LECTURE XXXIII. Treatment of Tetanus, continued. PFine; Mercury; Purgatives; Digitalis; Tobacco ; Musk; Frussic Acid; Belladonna; Carbonate of Iron; Oil of Tur- pentine; Strychnia; Surgical Expedients ; General Bales. Hydrophobia. In the last lecture we' considered the symptoms, the nature, the causes, and to a certain extent the treatment, of that terrible malady, tetanus. There is good reason for believing that it is essentially a disorder of the excito-motory apparatus; that it is caused by irritation of a peculiar kind, affecting that part of the nervous system, and producing tonic spasm of the voluntary muscles ; that the irritating cause may be centric, situated within the spinal canal, and applied directly to the cord; o'r eccentric, situated out of the spinal canal, applied to some part of one or more of its aff"erent nerves directly, and thus influencing indirectly the cord itself, and througn it the reflex motor nerves : and that a certain ill-understood state of the system" s necessary, a certain aptitude to take on the disease, before the exciting ^ause caa be efficient; and that one circumstance which has been ascertained to tend to 356 TETANUS. the production of such an aptitude, is a long-continued high temperature of tne atmosphere. I mentioned several remedies and plans of treatment which have been fairly tried, and mostly tried in vain, for the removal of this disease. The severe cases, and especially the severe traumatic cases, almost all prove fatal ; the less severe cases, those in which the paroxysms are less violent and less frequent, and which run on for several days, sometimes terminate in health : whether in consequence of the measures employed, or whether in spite of them, it is not easy to say. The idio- pathic cases, as they are called, those which appear to be produced by exposure to cold and wet, are usually the least severe, and the more hopeful. The remedies that have been tried, and which were mentioned in the last lecture, are opium ; blood-letting; the warm-bath; the cold-bath. I showed you that, under each of these remedies, a great number of patients died, and some recovered ; and that the reco« verics had been almost exclusively among those patients in whom the disease ap- peared originally in its milder form. So that whether the complaint was actually cured in any of these cases, whether, i. e., any single patient recovered, or recovered sooner, from using any of these remedies, who would have died, or in whom the disease would have been protracted if he had not used them, is a matter of uncertainty. The celebrated American physician. Dr. Rush, regarding the disease as essentially a disease of debility, and looking probably at its common tendency to death by asthenia, wrote a paper to recommend the employment of bark, and wine, and spirits, in full doses. It is curious enough, but quite in agreement with what has been already stated of opium, that how much wine soever may be swallowed by the patient, nothing hke intoxication is produced by it. The system resists the ordinary influence of the alcohol. In one instance related by Dr. Currie, the disease lasted six weeks, and in that space of time the patient drank 1 10 bottles of port wine. The same author mentions a remarkable case, in which a horse, which was attacked by tetanus, and happened to be a great favourite with its master, was treated with wine, and got well, after swallowing more port wine than he was worth. Whenever this plan has appeared to do good, it has been in the more chronic variety of the complaint. Mercury, you may be sure, has not been left untried. It is said that the system is slow in submitting to its influence, in this malady. The specific effect of mercury upon the gums is not, however, so strongly resisted as that of wine or opium upon the nerves. Nor can we be surprised at this, when we consider that in tetanus the functions of organic life are, comparatively, but little involved. It is clear that there is not time for any effectual exhibition of mercury in those severe cases that are early fatal. In its more chronic form the disorder has been known to yield upon the mouth becoming affected. This happened, if I mistake not, in Mr. Mayo's patient, men- tioned in the last lecture. Tetanus has sometimes, however, commenced while the patient Avas in a state of salivation. Dr. Wells has recorded three instances of that kind. The experience of the military surgeons who were in Spain, is, upon the whole, agamst the reputed efficacy of mercury. We must take care not to conclude too hastily, that because a patient uses a certain remedy and recovers, he recovers through the operation of that remedy : any more than we should conclude, if he recovered during a general election, that the election had cured him. Yet this absurd and unsafe mode of reasoning is for ever employed in respect to disease, by the public ; and too often, I fear, by ourselves. Purgatives have been much given in tetanus ; and often with manifest advantage : I mean in the less severe cases. But very large doses are commonly required to procure evacuations from the bowels. Whether the torpor of the intestines be always the effect of the disease, or whether it may not sometimes be, in part at least, a con- sequence of the opium that is given, I am not sure. When they do act, very unna- tural motions are frequently produced. Mr. Abernethy tells us of a hospital patient of his who recovered under the use of purgatives ; they were long before they had any effect, and when they did at last operate, such foetid stuff" came from him that no one who could crawl out of the ward would remain in it. He says also that the TETANUS. nurses, in other cases, have reported the stools to be more -ike sloughs than feces. Enormous quantities of drastic purgatives have been given. You may read an instance of this in the second volume of the Medico-Chirurgical Transactions. It is related by Mr. Harkness. There is a still more extraordinary case detailed by Dr. Briggs, in the fifth volume of the Edinburgh Medical and Surgical Journal. In little more than 48 hours, the patient in that case took 210 grains of scammony, 89 of gamboge, 80 of calomel, an ounce and four scruples of jalap, and 2i pints of what we call black dose, the infusion and tincture of senna : and all this without either sickness or griping ; but, on the contrary, with the most decided benefit. In the first week of his disease, the patient swallowed — of calomel, 2-80 grains ; scam- mony, 2G0; gamboge, 110; jalap, 3 ounces and 10 grains; infusion of senna, 5f pints. And altogether in the first 25 days — of calomel, 320 grains ; scammony, 340 ; gamboge, 126 ; jalap, 5 ounces and 71 drachms ; infusion of senna, lOf pints; besides an ounce and a half and 35 grains of the colocynth pill. I mention all this to show what the system will bear, under the bondage of the disease ; not as an en. couragement to you to prescribe such doses. It is certainly proper and necessary to clear out the bowels, and to endeavour to correct unhealthy secretions ; yet numerous evacuations, the act of going to stool often repeated, should be avoided. Under such obstinacy of the bowels, the croton oil would perhaps be the most eligible purgative. Foxglove and tobacco are two medicines, or rather poisons, which have been used ; both, probably, upon the same principle. Their effects, when full doses have been given, are much alike : sickness, faintness, feebleness and fluttering of the pulse, coldness of the surface, with that slack and passive state of the muscles which belongs to syncope. But if we consider that the influence of these substances upon the involuntary muscles, especially upon the heart, is more certain and decided than upon the muscles of voluntary motion, which are the muscles involved in the tetanic spasm, and if we take also into account the strong disposition observable in tetanus towards death by asthenia, we shall scarcely be prepared to expect any good, but the contrary, from digitahs, or tobacco ; especially in the latter periods, when, so far from obviating the tendency to death, they would seem to co-operate with the disease in extinguishing life. However, if the result of experience were clearly in their favour, we should not be warranted, by mere theoretical views, in withholding these drugs. The army surgeons, some of them, have fancied digitalis useful. Sir James M'Grigor mentions a case in which it caused a relaxation of the spasn^s ; but the man died afterwards, apparently from the effects of the remedy. And t-'iis is just what I find with digitalis. When given in large doses (and small ones here must be useless) it becomes unmanageable. Certainly we have no such accounts of its salutary power as would induce me to give it with much expectation of success, or to give it at all. The tobacco is not given by the mouth, but thrown up into the rectum : either the smoke of its burning leaves, or (what is probably as efficacious, and I should think more uniform and less unsafe) an infusion of them in water. Mr. Curling, after analyzing a large number of cases of tetanus, thinks tobacco the best remedy we at present possess. Mr. Travers is of the same opinion. However, I should recommend great caution in the use of this ticklish remedy. You ought to know that, when injected in other emergencies, in strangulated hernia, for example, mortal syncope has followed such enemata. Musk, in large doses, has been strongly recommended by a Frenchman, Fornier- Pescay, who has written on this disease. He gave ten or twenty grains, at intervals - so that a drachm, or even two drachms, were taken in the course of the day ; and he declares that he found it more efficacious than any thing else that he had tried. Prussic acid and belladonna are said, by Dr. Elliotson, to have been freely pre scribed, and to have failed; whether in his own hands, or in those of others, I do not know. There is another remedy which the same physician has employed : and employed not without success : the carbonate of iron. Reflecting, he tells us, upon the good eflTect of this medicine in another complaint which has some points o^ analogy witn 358 TETANUS. tetanus, viz., chorea, of which I shall soon speak, and considering how miserahty narcotics had failed, he determined to give the carbonate of iron a fair trial upon the first opportunity. He has published some account of its effects in tetanus, in ihe Medico-Chirurgical Transactions. In the first case in which he used it, the tetanus supervened upon a compound dislocation of the great toe. The method in Avhich the remedy was administered was this. The carbonate was made into an electuary by niixing it with twice its weight of treacle. The electuary thus made was well stirred in beef-tea just as the patient was about to drink it. He took this every two hours, as much as he could swallow : and he got well. The next case is described as being a very severe one ; it resulted from a contusion of the thumb. Dr. EUiotson says that he never saw a case, ivhich did well, that was more severe. This patient also took the carbonate of iron, as much as could be got down ; and that was about two pounds a day. He had injections twice daily, to keep the bowels unloaded ; and the iron is described as having come away in large red lumps, in shape like horse dung. This man recovered. In a third case, where a chilblain above the heel was the exciting cause, the boy died within twenty-hours of the time when the remedy was first prescribed. To produce its effects upon the system (Dr. EUiotson observes, very truly), iron must be given ybr a few days: nay, he holds that months some- times elapse before it has any effect. So that if it really be useful in tetanus, we cannot expect much good from it in the more acute cases : and these are the cases for which we want a remedy. Oil of turpentine is one of the many substances that have been praised as useful in tetanus. Now, bearing in mind its power (which I shall hereafter describe, but which you must at present take for granted) as a worm-killer, and also the frequency with which worms are met with in the stomach and bowels after death bj"- tetanus, this is one of the drugs which I should employ as a purgative, taking my chance of whatever good might possibly arise from its specific or anthelmintic qualities. It may be given in such cases either by the mouth, or in an enema, or at both ends together: but it must be given in large doses, not less than an ounce at a time ; and it may be mixed with an equal quantity of castor oil. The one oil dis- solves or becomes incorporated in the other. Sfrychnia has been suggested as a remedy for severe tetanus ; not in infinitesimal doses, as Hahnemann would, I suppose, prescribe it, but in sufficient quantity to produce a sensible effect. The principle upon which this has been recommended }s the same with that on which the nitrate of silver ointment is applied to the in- flamed conjunctiva in purulent ophthalmia. We know that strychnia acts upon the fpinal cord, affecting apparently those parts and those functions of the cord which are affected in tetanus : and in so fatal a malady, it would be justifiable, I conceive, to give the strychnia, in the hope that it might occasion a morbid action which would supersede the morbid action of the disease, and yet be less perilous and more manageable than it. But it would be right to try such a remedy as this in the first instance, in corpore vili ; upon one of the lower animals. This, were it successful, would be a cure, according to the Hahnemannic doctrine — similia similibus curaii' fur — a doctrine much older, however, than Hahnemann. But the opposite maxim, contraria contrariis has been suggested. Mr. Morgan proposes to give such poi- sons as are knoAvn to cause paralysis, with the view of countervailing the undue action of the muscles in tetanus. He produces artificial tetanus by inserting a poison brought from Java, called "chatic," into a wound, and then relieves the tetanic symptoms by a North American poison, the ticunas. Professor Sewell of the Veterinary College, has tried this principle in one case at least, where the tetanus was the result, not of any poison, but of disease. Not having had an opportunity of getting the particulars of this case from Mr. Sewell himself, I give you Mr. Mayo's account of it. " A horse, suffering from a severe attack of tetanus and locked-jaw, the mouth being too firmly closed to admit the introduction of either food or medicine, was inoculated on the fleshy part of the shoulder with an arrow-point coated with wourali poison. In ten minutes apparent death was produced. Arti- ficial respiration was immediately conimenced, and kept up about four hours, when reanimation took place. The animal rose up, apparently perfectly recovered, and TETANUS. 359 eagerly partook of corn and hay. He was unluckily too abundantly supplied with food during the night. The consequence was over-distension of the stomach, of which the animal died the following day, without, however, having the slightest re- currence of tetanic symptoms." I had fancied that the death had resuhed from some injurious effect upon the lungs, produced by the artificial breathing. But I have little doubt that Mr. Mayo derived his statement from Mr. Sewell himself. The experiment deserves to be carefully repeated. I have but httle to say concerning what may be called the surgical treatment of trau- matic tetanus. It was a natural thing, the source of the irritation being supposed to be the wound, to expect relief from amputation of the limb. But that will not arrest the morbid action after it has once been fairly established. Dr. EUiotson says he has searched scores of books, and found only one case in which the hmb and the disease were lopped away together. However, Mr. Blizard Curling, in his Essay on Tttanus, refers to seven instances of recovery, after the injured part had been amputated. Yet he states that "it is almost impossible to ascertain with certainty how far the amputation, in these cases, was of service. I beheve I cannot offer you better advice on this subject than may be gathered from the concluding remarks of a very distinguished and philosophical surgeon, in his lectures on this disease. I allude to the late Mr. Abernethy, whose pupil I had the good fortune to be. He said, " The state of the part injured is not the sole cause of tetanus. In cases of tetanus I have often amputated injured fingers; and though I did not thereby save my patients, yet I think that the symptoms were mitigated after such amputations. In such cases, then, I would not amputate any considerable member; nor even a small one, unless I thought that, from the injury sustained, it would prove useless to its possessor, even though the case should terminate favourably." The tourniquet has been applied to the hurt limb ; but not, so far as I know, with any good effect. The most promising expedient which surgery offers is the divi- sion of the principal nerve proceeding to, or rather from, the seat of the injury. This, supposing the nerve to be known and accessible, is less formidable, less severe, less hazardous, less maiming, and, if we may judge from past experience, more effectual, too, than amputation of the part. Dr. Murray has recorded (in the eleventh volume of the Medical Gazette), a very interesting case, in which the operation Avas followed by most decided and instant relief. The patient was a young midshipman who, having trodden on a rusty nail, which pierced the sole of his left foot, had kept watch the same night upon deck, the weather being very cold. The disease began the next day, and the symptoms ran high. It was a case, therefore, of severe or acute tetanus. Without loss of time, the posterior tibial nerve was divided. The limb was previously cold, and, as the patient said, dead, and he had httle power of moving it. He could not articulate distinctly, on account of the closed state of his jaws. The nerve was cut through by one stroke of the scalpel : and "immedi- ately (says Dr. Murray) he opened his mouth with an exclamation ; and on looking at his countenance I was astonished at tlie striking improvement in it. I asked him how he felt, and he said he was already much better, and that his leg had come to life again." Some stiffliess of the jaws and neck remained for a day or two ; but he soon recovered. Dr. Murray rel'ers to another case, mentioned by Baron Larrey, in which division of the nerve had a similar result. Probably, to be successful, the operation must be early ; before the morbid con- dition peculiar to the disorder has had time to root itself in the nervous system. Although, in the present state of our knowledge, there is no one remedy or plan on which we can rely for the cure of this fearful malady, we may with much confidence lay down certain general rules, the observance of which will secure to the patient the best chance of a favourable result. Since any, the smallest movement, or impression made upon the surface, or upon the senses, will bring on the severer degrees of spasm, it is of primary importance to protect the patient against these sources of trouble, so sure to aggravate his suf- ferings, and so likely to augment his danger. Hence if blood-letting should be thought advisable, it should be done early, sufficiently, and once for all. There should be no repetition of venesection, or of cupping, or of leeches, unless the cu- 'i60 HYDROPHOBIA. cumstances and progress of the case plainly demand them. The same remark applies to the frequent use of purgatives. The bowels should be well cleared in the outset, and then let alone. The patient should lie in a darkened room ; from which noise also should, as much as possible, be excluded. He should not be surrounded by a multitude of friends or attendants. He should be enjoined to speak, to move, to swallow as seldom as he can. In the severe traumatic cases, the nerve, in mv judgment, should be promptly divided. And in all cases, there being no special indications to the contrary, I should be more inchned to administer wine in large doses, and nutriment, than any particular drug. If the tendency to mortal asthenia can be staved off, the disturbance of the excito-motory apparatus may, perchance, subside or pass away. There is a form of this complaint called trismus nascentium. As the name im- plies, it occurs in newly-born children. It is very frequent and very fatal in the West Indies ; coming on usually in the second week after birth. Hence it-iias been called " the ninth-day disease." Another of its names in the British settlements there, is " the jaw-fall ;" from the circumstance that shortly before death the lower jaw, which had previously been firmly pressed against the upper, drops on the breast. It has been said that a fourth of' the infant negroes in Jamaica used to die of this disorder. Some persons refer it to the irritation produced by the retention of the meconium in the intestines ; others to irritation from the wound made by dividing the navel-string. A dose of purgative medicine appears to be the most hopeful remedy. The complaint is common, I am told, in ill-ventilated lying-in hospitals. Pure air must, therefore, be desirable as an adjuvant. Tetanic symptoms sotnetimes occur (but I should think very rarely) in ague. Or paroxysms of tetanus return at regular intervals, and terminate by profuse perspira- tion : the patient being well during the intermissions. When such phenomena arise, the treatment proper in severe forms of ague must be adopted : what that treat- ment is, I shall in no long time be able, I hope, to lay before you. Again, tetanus is occasionally a symptom in hysteria; and then the treatment applicable to hysteria must be had recourse to ; especially encmata of oil of turpen- tine, or the same medicine given by the mouth ; and the cold affusion. If the disease of which I have been speaking be dangerous, and very often fatal, in spite of all remedial measures, that which I propose to bring next under your attention is still more appaUing ; for I believe that hitherto it has been uniformly mortal. I know not that any one has ever been rescued by art, or saved by the efforts of nature, from Hydrophobia, after that frightful disease has once declared itself by its characteristic symptoms. The nature of those symptoms, and the absence of all definite or constant traces of organic change in the dead body, suffi- ciently mark the disease as belonging essentially to the nervous system, and as being essentially a spasmodic disease also. What are the symptoms stated in broad outline ? These. Excessive nervous irritability and apprehension; spasmodic contractions of the muscles of the fauces, excited by various external influences, and especially by the sight or sound of liquids, and by attempts to swallow them ; and extreme difficulty, amounting sometimes to impossibility, of drinking. 'Vhh is one of the diseases which are produced by animal poisons ; and its course will be most conveniently traced if we include in our description of it the very first step towards its production, — the application of the specific poison to the body. A man is bitten by a dog. After a time the symptoms proper to hydrophobia come on. After another interval the man is dead. Before we advert to the many very interesting points of inquiry which arise out of the contemplation of this malady, let •is follow the tragedy from its commencement to its closing scene. A person is bitten, then, by a mad dog. Does the existence of rabies in the ani- mal modify in any way the injury thus inflicted? No; the wound that is made behaves just the same, to all appearance, as it would have behaved if the dog had not been rabid; and it gradually heals. After an uncertain interval — which lies, for the most part, between six weeks and eighteen months, and which ha.- l.'et-n HYDROPHOBIA. 361 called the period of incubation — the following symptoms begin to be noticeable. The patient experiences pain, or some uneasy or unnatural sensation, in the situa- tion of the bite. If it has healed up, the cicatrix tingles, or aches, or feels cold, or stiff, or numb : sometimes it becomes visibly red, swelled, or livid ; on one occasion a papular eruption took place around it; sometimes it opens afresh, and discharges a peculiar ichor. The pain or uneasiness extends from the sore or scar towards the central parts of the body : i. e., if the bite has been inflicted on a limb, the morbid sensations extend towards the trunk. All this gives fearful notice of what is about to happen. This period is called the period of recrudescence. I believe it seldom fails to occur, although it sometimes is not noticed ; the attention of the patient, and of his medical advisers, being absorbed by the horrible sequel. Very soon after this renewal of local irritation — within a few hours, perhaps, but certainly within a very- few days, during which the patient feels uncomfortable and ill — the specific consti- tutional symptoms begin : he is hurried and irritable ; speaks of pain and stiffness, perhaps, about his neck and throat : unexpectedly he finds himself unable to swal- low fluids, and every attempt to do so brings on a paroxysm of choking and sobbing, of a very distressful kind to behold ; and this continues for two or three days, till the patient dies exhausted, in the way of asthenia. I have seen only two examples of this terrific malady ; one in St. Bartholomew's Hospital, in the year 1826 ; one much more recently in the Middlesex Hospital. As they constitute the whole of my personal experience in the matter, I shall relate these cases. The first occurred in a coachman, the back of whose right hand had been struck, ten weeks previously, by the teeth of a terrier dog; but, as both the patient and his fellow-servants declared, there was no wound made, no blood drawn, no breach or lifting of the skin ; but merely an indentation, showing where the animal's teeth had pressed. He was brought to the hospital on a Tuesday. On the preceding Thurs- day his hand had become painful, and swelled a little. On Friday the pain ex- tended into the arm, and became more severe. His wife stated that he had been in the habit of sponging his head and body every morning with cold water, but that, on this morning, he refrained from doing so, on account of some feeling of spasra about the throat. His own remark on this was, that " he could not think how he could be so silly." On Saturday the extent and the severity of the pain had still further increased. On this and the preceding night he got no sleep. He felt ill and drowsy on the Sunday, but drove the carriage to Kensington Gardens : he was, however, obliged to hold both whip and reins in his left hand. The pain extended to the shoulder. He was then bled. A slop-basin full of blood was taken, with much relief to the pain ; and purgative medicine was given, which operated well. The next day he complained of " feeling very ill all over," and he told his medi- cal attendant that he could not take his draughts, because of the spasm in his throat. That gentleman (Mr. Macdonald), concealing his own suspicions as to the true nature of the disease, said, "Oh, you don't like the taste of your phj^sic! drink some water." But he declared he had the same difficulty with water. The next day he came to the hospital. When there, water was brought and placed before him in a basin, for the alleged purpose of allowing him to wash his hands. It did not seem to disturb him, nor to excite any particular attention. Water was then offered him to drink, which he took, and carried to his mouth, but drew his head from it with a convulsive- shudder. After this, on the same morning, he was much questioned by several persons about the supposed cause of his iUness ; and water was again brought him, which agitated him, and he became exceedingly distressed and unquiet, complaining of the air which blew upon him. I first saw him myself soon after this. He was then, to all outward appearance, wt'l! ; lying on his back, without spasm, without anxiety ; his face somewhat flushed. He said he had a little headache, but no pain in the arm. His pulse was i:3"2, full, and strong; his tongue moist, and shghlly furred. He appeared to be a very quiet, good-tempered man ; and smiled generally when he was spoken to. I was naturally much interested by this case, and at nine in the evening I visited 2f 362 HYDROPHOBIA. 1 the patieni again. Ht; was composed and tranquil. Gruel was mentioned, and then he sighed two or three times deeply ; then sat up, and, after a moment's look of serious terror, took half a spoonful of the gruel in a hurried gasping manner; and said he would not take more at a time, lest the sensalion should come on. He was desired to drink the last portion of the gruel from the basin. He accordingly seized it with a hurry, carried, it to his mouth with an air of determination, and then a violent choking spasm of the muscles about the throat ensued, the stemo- mastoidei starting strongly forwards. Most of the gruel was spilled over his chin ; and he observed that he had been too much in a hurry, or he should have managed it. The treatment consisted in full doses of opium, repeated at frequent intervals. On this visit to him I noticed, that while attempting to take some of the gruel with a spoon, he seemed inclined to doze as he sat. Otherwise there were no signs of his being overwhelmed, or even sensibly affected by the opium, unless indeed his gene- ral quietness was the consequence of it. He was quite rational and calm, except when attempting to take fluids. On the Wednesday, at noon, he was in nearly the same state, but said he was better. In the course of the night some morsels of ice had been given him : with considerable effort he swallowed two or three of these ; the third or fourth caused so much spasm, however, that he was obliged to throw it out of his mouth : but so great was his resolution that he seized it again, and, by a strong exertion, succeeded in swallowing it. He complained now that his mouth was and had been clammy ; and he champed much, and spat out a good deal of tough mucus. At his own request, and ("as he said) that he might injure no one, a strait-waistcoat was brought, which he assisted in putting on. But he was perfectly tranquil then. I now had an opportunity of seeing him take some arrow-root. He sat up in bed to eat it ; and before attempting to do so, he made hurried inspirations, and sobbings precisely resembling those which occur when one wades gradually into cold water. He swallowed small quantities of arrow-root eight or nine times, with hurry and difficulty, and with sighs that succeeded each other rapidly. He said that he felt the upper part of his throat narrower than it should be. He continued to take laudanum mixed with sugar and bread into a kind of pulp. By the evening of that day the disease had not made much further progress. He again sat up and tried to eat some thinnish gruel. While taking the basin into his hand, he drew back his head to a distance from it, apparently involuntarily. He took one half-spoonful with effort and distress, then sighed deeply and rapidly, or rather his breathing consisted of a succession of sighs at short intervals : he gave up the basin, and sank back on his pillow still sighing. In the course of that night he ceased to take the laudanum ; he could no longer attempt it. The next day ne was still composed, though more easily irritated ; and it was found that he had lost the power of moving the left arm. His pulse was 140, and much weaker than before, and his mental powers Avere failing. He gradually sank, and died in the evening, having repeated the Lord's Prayer an hour previously. During the last hours of life he had been moaning, and tossing from side to side : his bowels were purged ; fluid stools ran from him, and distressed him greatly. His lower extremities first became cold, and the coldness extended by degrees up to his chest. He hawked up in the course of the day a considerable quantity of ropy mucus, and much frothy saliva came from his mouth towards the close. As his wife was wiping this away, his teeth, whether by convulsive accident or otherwise, came in contact with her finger, and drew blood. The part was cut out ; and no bad consequence followed that I know of. The examination of his body threw no satisfactory light ujwn the essential nature of the disease. Blood and serous fluid escaped on the removal of the calvarium. The vessels of the membranes were full, and the brain itself was mottled somewhat by Its vascularity. There were a few spots of ccchymosis on the heart. The back part of the tongue was very vascular. The stomach presented the most notable appearance. There was a quantity of brownish-coloured mucus on its inner surface, and the mucous membrane had disappeared from a space about four inches in diameter at its left and larger end. That space alone was diaphanous ; its edges HYDROPHOBIA. 363 sloped inwards ; and a segment of this thin place looked exactly like a piece oi china. On a white ground, there were inosculating vessels, some of them blue, and some of them of a coffee-coloured brown. I conclude that this appearance was produced by the action of the gastric juice after death. This was in some respects a remarkable case. It was remarkable for its duration. Dr. Bardsley, in the article on Hydrophobia in the Cyclopxdia of Practical Medicine, states that the patients " invariably go on from bad to worse, and finally die before the sixth day." Now if we reckon that stage of the complaint here referred to by Dr. Bardsley to have begun on the morning of Friday, when he was obliged, to omit his sponging because of the spasm about his throat, this patient did not die till the middle of the seventh day. In fact it was a very protracted case, and the symp- toms were less violent than usual. Whether this was owing to the opium he took or not, it would be difficult to determine. In the second of the two cases which it has been my lot to witness, the charac- teristic symptoms of hydrophobia were more faintly pronounced than is usual. On my arrival at the Middlesex Hospital, on Thursday, the 5th of October, 1837, I was told that a patient had been admitted (under one of my colleagues) labouring probably under hydrophobia. He had applied at the hospital in the middle of the night ; but was then sent away, after receiving some aperient pills, with assurances that he was only feverish and nervous. On his reapplication in the morning, he had been admitted. I found him in the ward : a man twenty-five years old, of dark complexion and hair. He expressed his conviction that he was afiiicted with hydrophobia ; and said he was prepared for his fate. I observed that every now and then he suddenly sighed in a very pecuhar manner ; just as I had seen the former patient sigh. This would happen sometimes in the middle of a sentence, while he was speaking. He told us that he had been bitten by a dog in the latter end of July ; the dog was swim- ming, and like to drown, in a canal, and upon his reaching over to lift him out of the water, the animal seized upon his hand. After dragging the dog out, he beat him for his ingratitude ; and then the dog ran off, and was pursued by a mob of boys, who had previously been pelting him as a mad dog. There was a scar on the middle finger of the right hand ; the nail of that finger had (he said) been torn through, and each of the two adjacent fingers had been more slightly bitten. His pulse was 84 ; but varied in frequency at short intervals. He acknowledged that after receiving the bite he was uneasy as to its possible effects, and read books about hydrophobia at the time : but he affirmed that he had afterwards ceased entirely to think about it. He had persuaded himself that the dog could not be mad, from its being in the water. On Tuesday, if not earlier, he" had been uncomfortable and restless ; and on Wednesday he found he could not swallow liquids. On one of these days he experienced a slight pricking sensation, without any redness or tenderness, in the site of the scar ; his right arm and leg seemed to himself hotter than the opposite limbs ; and the arm, though not tender, felt raw, and he could not bear the light contact of his clothes upon it. Fie became feverish also. From time to time a slight expression of terror passed across his features, and then he made a sudden, deep, sighing inspiration : at other times his breathing and appearance were perfectly natural. It was said that when some water was brought him he drew himself back from it with horror. He talked a good deal. I saw him eat rice, made pulpy with milk. He took it without looking at the spoon, from which he averted his eyes, and ate several mouthfuls, in a gulping man- ner, and with evident effort. His bowels had been purged by the pills, and he declared that the noise of the water in the water-closet had distressed him. The sound of some water poured from one vessel into another by the pa-tient in the next bed, had also agitated him. So did the contact of my cold hand on his arm ; and currents of air, even the breath of any one speaking to him ; so that he insisted on conversing with the apothecary in such a position that the chin of each was upon the other's shoulder. But there was no actual or apparent spasm. At this time he affirmed that the presence of company cheered him, and did hnu 364 HYDROPHOBIA. I good ; and beg-ged that he might not be removed into a separate room. And he wished for some amusing book that he might read. In the evening I again went to see him. He did not seem worse, thoutrh he said "his symptoms were increasing." He had taken a dose of musk and'some morphia. The next day I found the hospital in some confusion. Between eleven and twelve o'clock in the preceding night some of the officers of the hospital had gone to his bed, while he was apparently asleep, and certainly very quiet. They asked him if he would like some water. This seems to have greatly excited him ; and imme- diately after their departure he rushed out of bed, (terrified he said,) became furious and unmanageable, and was never again tranquil till he died, about the same time next night. He was now put into a room by himself; and, taking advantage of the momentary absence of the nurse, he bolted himself in alone : and he declared he would admit no person but her. The door was at length forced, and a strait- waistcoat was put upon him. He then became quieter in his manner ; begged that no unnecessary violence might be used ; asked to be poisoned ; spat at some of the bj'standers, and reproached them, talking rapidly and wildly like an insane person ; yet loudly and angrily imposing silence on every one who addressed him. He said he could not bear to hear any one speak; that he did not like my bass voice. Then he would sneer at the students, and say they showed bravery enough now he was confined : " Was it right for 3'oung gentlemen of education to stand there gazing with curiosity on a dying man ?" asked for bread soaked in water, and when it was held towards him, snatched it in his mouth in a savage manner ; spoke of his " poi- soned tooth," and talked perpetually. He took a fancy to one of the students, and begged that he might remain with him. About this time he vomited some yellow fluid, and thought he felt the better for it, and asked for an emetic ; and some tartarized antimony was exhibited. He was now pale, and his lips were Hvid ; but none of the distinctive spasmodic attacks occurred : indeed water was not at this time suffered to be brought near him. This circumstance it was, this absence of the peculiar spasmodic paroxysms which char- acterize hydrophobia, that induced several medical men of much sagacity and expe- rience to doubt, and even with some positiveness to deny, that the patient was suffering under that disease at all. The}'' supposed him to be hysterical, half-crazj'', or on the brink of delirium tremens. But though slightly expressed, the symptoms were unlike anything I had ever witnessed, except in the previous instance. And the closing scene was quite distinctive. It appeared, and he spoke of it as a thing which distressed him, that when he was most excited, his urine passed involuntar}'. In the ev^ening I found his father with him. He had recognized him, and kissed his mother-in-law ; but soon began to rave, and to be apparently occupied with absent persons. He was pale and weak, and lay with his head over the side of the bed, spitting continually upon the floor, which was thus made quite wet. He wished to have his hands at liberty that he might " clear his mouth." He was soliloquizing when I went into the room in this way: "Monsters — monsters — see that monster, Susan — take her away." (It appeared that he was now speaking of a young woman who had had a child by him.) "I thought they would do much for science, but never sujiposed they would inflict such agony as this ;" and so on. A little later Mr. Arnott visited him. He had then no pulse at the wrist. The waistcoat was removed. He sat up, and used some water, brought to wash his hands, without apparent distress. Soon after he sank back exhausted ; and expired. His father corroborated what the patient had said of the dog ; and told us his son was clever, and better educated than many of his rank (he wai a tailor), but always exceedingly nervous. The bodj' was examined the next day. Its posterior and undermost surface was very livid. The blood everywhere quite fluid. The veins of the spinal cord, on its posterior part, were turgid; not at all so on the anterior. The substance of the cord was quite natural. There was some fluid in the theca. The brain appeared to me in every pari, quite sound and healthy. HYDROPHOBIA. 365 The head and face, which had been hanging over the table while the spinal canal was opened from behind, were deeply purple as though universally bruised. This colour diminished rapidly after the corpse was placed supine, and the head raised somewhat above the level of the body. The papilte at the back part of the tongue were greatly exaggerated, and looked like large vesicles. The cartilage of the epiglottis, at its lower part, was red. At about the middle portion of the oesophagus there was an appearance as if the cuticle was abraded. The mucous membrane of the stomach was soft, and red here and there, with a dotted injection resembling ecchymosis, especially on its rugae. The air-passages were apparently heakhy. Generally, the disease, when it has once set in, and shown the peculiar hydro- phobic symptoms, runs a short and fierce course. The nervous irritability becomes extreme. The peculiar paroxysms of choking spasm, and sobbing, are excited, not only by attempts to swallow liquids, but by the very sight or sound of them. Dr. Elliotson mentions a boy who was thrown into a state of violent agitation by hearing a dresser who sat up with him make water. The passage of a gust of wind across his face, the waving of a polished surface, as of a mirror, before his eyes, the crawl- ing of an insect over his skin, is often sufficient to excite great irritation, and the peculiar strangling sensation about the fauces, in a hydrophobic patient. These circumstances were but little observable in the men whose cases I have related. The first of them indeed was remarkably calm and tranquil under the disease. In general the patient is dreadfully irritable, and apprehensive and suspicious ; and in most cases there is a degree of mania or delirium mixed up with the irritability ; the suf- ferer is very garrulous and excited. In this respect there is a marked difference between hydrophobia and tetanus. In the latter disorder the mental facukies are clear, and the patients serene, and what is called heart-whole, to the last. The two diseases differ in another striking particular: the spasm in the one case is tonic, in the other clonic. In tetanus, again, there is no thirst, and seldom any accumulation of tough and stringy mucus in the fauces and about the angles of the mouth ; in hydrophobia both these symptoms are always, J believe, present. So probably is vomiting; but vomiting in tetanus is rare. The nervous irritability in hydrophobia is doubtless a part of the disease, and is very seldom absent even now-a-days. Some- time ago it might perhaps have been plausibly attributed to the treatment adopted. I allude to that period in which it was believed that these miserable persons had both the power, and the inclination, to impart the disease to others by biting them ; and when, under pretence of shortening his sufferings, but really, I am afraid, with the cowardly view of protecting themselves, his friends were accustomed to smother the unhappy patient between two feather-beds, or to open a vein, and to leave him to bleed to death. Any person suspecting what was the matter, and foreseeing such a termination to his disease, might well be nervous and irritable. But now that this barbarous practice has been exploded, and the dread of being smothered does not occur to the mind of the patient, he is still found to be exquisitely frritable and timo- rous. The foam and sticky mucus that gather in the throat and mouth, these patients make great efforts, by spitting and blowing, to get rid of; and the sounds tl.cy thus produce have been exaggerated by ignorance and credulity into the barking and loaming of a dog. In the same way the paraplegia which sometimes takes place, rendering the patient unable to stand upright, has been misconstrued into a desire on his part to go on all fours like a dog. The pulse, though it may be strong and hard at the outset, becomes, in a short time, frequent and feeble, and the general strength declines with great rapidity. Death occasionally takes place within twenty-four hours after the commencement of the specific symptoms. Most commonly of all it happens on the second or third day ; now and then it is postponed to the fifth day , and in still rarer instances, of which my first case Avas one, death does not occur till the seventh, or eighth, or nin-th day. In most cases the paroxysms becoming more violent and frequent, exhaust the patient ; but in a few instances the symptoms un- dergo a marked alteration before death. The paroxysms cease, the nervous irritabi- Uty disappears, the patient is able to eat and drink, and converse with ease ; thoso Sights and sounds which so annoyed and distressed hira before, no longer cause him 2f2 366 HYDROPHOBIA. any disquiet. In this state he often sinks into a sleep, and suddenly wakes from it to die : sometimes his existence is put an end to by a sudden and violent convulsion. It is needless for me to go into a minute account of the morbid appearances that l^ave been met with in persons dead of hydrophobia. They are various, uncertain, unsatisfactory. In some bodies the most careful examination has discovered nolhinc amiss. In others, vascularity of the brain, or of the spinal cord, has been noticed. And in not a few instances the mucous membrane of the fauces, ossophagus, and stomach — or of the larynx and trachea — or of both these tracts — has been found red, and covered with adhesive mucus. But we must take care not to attribute undue importance to these last appearances — not to conclude that they have been the cause of the symptoms, when, in truth, they may have been the effect of the disease. That we should find the parts in the throat red and congested is what we might naturally expect, when we consider the violent straining spasmodic action of these parts for some time before death. The morbid anatomy of this disease throws but little hght upon its nature, or upon its proper treatment. There are many very interesting questions connected with hydrophobia. I will state the principal of these as shortly as I can. 1. You will be surprised when I tell you that some persons have made it a ques- tion whether there is any such disease at all. I have known such. The late Sir Isaac Pennington, who was Regius Professor of Physic at Cambridge, had never seen a case of hydrophobia, and nothing could persuade him that any one else had seen any thing more than a nervous complaint produced by the alarmed imagination of the patient, who, having been bitten by a dog reputed to be mad, and having the fear of feather beds before his eyes, was frightened into a belief that he had hydro- phobia, and ultimately scared out of his very existence. Now if you meet with such incredulous persons, and think it worth your while to argue the point with them, you may object to their unbehef, the improbability that so many persons who have been bitten by mad dogs should have suffered so precisely the same train of symptoms, and at last have died, from the mere force of a morbid imagination. You may urge them with the fact that many of these persons have been under no apprehension at all until the disease has seized upon them ; that many also have been men of na- turally strong and firm minds, not at all hkely to be frightened into beheving that they were seriously ill unless they really were so, and still less likely to be terrified into their graves. And if this has no weight Avith such reasoners, you may bring forward the conclusive facts that the disease has befallen infants and idiots, who had never heard or understood a word about mad dogs or hydrophobia, and in whom the imagination could have had no power in calling forth the complaint. And if they are proof against this, you must give them up : I can suggest nothing more. 2. Allow that the disease exists as a real, and not merely imaginary disease, and also that it is caused by the bite of a rabid animal : this important question arises — has it any other cause ? Setting aside that quibbhng apphcation of the term hydrophobia, which some writers have chosen to make, to diseases in which, from some painful affection of the throat, the patients have been unwilling to attempt to swallow fluids, there are cases recorded, exactly resembling hydrophobia in their symptoms, and occurrincr in persons who were never known to have been bitten by, or even to have been in the presence of, a rabid animal. The celebrated and accurate Pinel has given the history of such a case. There is another by Savirotte, in the Journal des Savans (August, 1757). Now it is just possible that this disease may sometimes develop itself in the human body without any contagion having been applied : and it is also possible, and much more probable, in my judgment, that the poison may have been applied without the person's being aware of it. We shall see, by and by, some very possible ways in which that might happen. All that we need concern ourselves with practically, is this — that in 999 cases out of 1000 the disease in the human body is uerived from a rabid animal. If it ever be spontaneous, we cannot reckon upon meeting with such a case : indeed, many medical men pass through life without witnessing the disorder at all. HYDROPHOBIA. 367 3. Granting, then, that the disease in man is the result of an animal poison, the next question is, from what animals may he receive the infection ? We are sure that the disease, by the inoculation of which hydrophobia may be produced in man, is common in the dog, and that it has been communicated to the human animal by the fox also, the wolf, the jackal, and the cat. Mr. Youatt says that the sahva of the badger, the horse, the human being, has undoubtedly produced rabies, and some affirm that it has been propagated even by the hen and the duck. The same author mentions a case in which a groom became affected with hydro- phobia through a scratch which he received from the tooth of a horse that was labouring under the disease. All animals, even fowls, are susceptible of the disorder when bitten by the rabid dog. Of course it is an important question to have resolved, whether the saliva of all these is capable of conveying the malady. The case just now mentioned on Mr. Youatt's authority would seem to settle the question as respects the horse ; but as horses, cows, turkeys, &c., do not generally bite, we have not many opportunities of supplying a positive answer to the general question : there can be no doubt about the cat, the fox, the wolf, and the jackal. The late Duke of Richmond died abroad of hydrophobia, communicated, it was though., by a tame fox. In the 13th volume of the Medico-Chirurgical Transac- tions, an account is given by Mr. Hewitt, of several cases of fatal hydrophobia from the bite of a wild and rabid jackal. Many examples are on record of the produc- tion of the disease by the bites of mad cats and wolves. The first case which I have spoken of, as having been seen by myself, would seem to prove, if all the facts were correctly stated at the time, that the saliva of the dog may be sufficient to produce the disease, when it is merely applied to the unbroken skin. It was affirmed by various persons that the teeth of the terrier did not break the cuticle. But we must take care not to draw a hasty general inference from a single case. Mr. Youatt, who has seen more of the disease probably both in man and in other animals, than any person alive, does not think that the saliva of a rabid animal can communicate the disorder through the unbroken cuticle : he believes that there must be some abrasion or breach of surface. He holds, however, that it may be communicated by mere contact with the mucous membranes. Of its harmlessness on the sound integument he offers this presumption — that his own hands have many times, with perfect impunity, been covered with the sahva cf the mad dog. He mentions some singular instances in Avhich the disease had been transmitted by contact of the saliva with the mucous membranes. " A man had endeavoured to untie with his teeth a knot that had been firmly drawn in a cord. Eight weeks afterwards he perished, undeniably rabid. It was then recol- lected that with this cord a mad dog had been confined. A woman was attacked by a rabid dog, and escaped with the laceration of her gown. In the act of mend- ing it she thoughtlessly pressed down the seam with her teeth. She died." If these cases be authentic, they are conclusive of this question ; unless, indeed, the hps of those who perished happened to have been chapped or abraded. But Mr. Youatt's own opinion is, that the virus cannot be received on a mucous surface without imminent danger. The disease is said to have been caused by the scratch of a cat. But as we know that cats as well as dogs frequently apply their paws to their mouths, especially when the latter part is uneasy, (as it clearly is in mad dogs,) this fact, of the produc- tion of the disease by a scratch, if thoroughly made out, would not prove that the disease can be introduced into the system m any other way than by means of the slaver. 368 HYDROPHOBIA. LECTURE XXXIV. Hydrophobia, concluded. Various Queslions considered respcctins; the Disease as if appears in the Human Subject, and respecting Rabies in the Hog. Pathology of the Disorder. Treatment. Preventive Measures. After giving you some account of the phenomena of hydrophobia, or rabies canina, I began to notice, in the last lecture, the chief of the interesting questions which naturally present themselves to the minds of most men, and especially of medical men, in respect to that shocking disorder. In the first place, there is such a disorder. It appears, too, secondly, from state- ments made upon credible authority, that the same group and succession of symp- toms as characterize the disease when it is produced by the bite of a rabid animal, have been observed to occur in persons who were never known to have been bitten. In my own opinion it is more probable that these persons had been exposed to the virus without being aware of it, than that the disease was spontaneously engendered in their bodies. 1 would make the same remark with regard to an instance which is said to have happened of hydrophobia in a lad who had been bitten five weeks before by a healthy dog : the dog remaining well at the time of his seizure and death. Mr. Youatt holds, indeed, that however the disease originated, it never occurs now, not even in the dog, except as a consequence of the application of the specific contagion. It is certain, in the third place, that (besides the dog) the wolf, the fox, the jackal, and the cat, have communicated the disorder to the human ani- mal. Mr. Youatt affirms, that the saliva of the badger, of the horse, and of the human being, has caused rabies ; and I mentioned, on his authority, a case in which a groom contracted the disease through a scratch which he received while administering a ball to a rabid horse. But 1 feel much less certain about these latter animals. Re specting the dog, the fox, the wolf, the jackal, the cat, there can be no question. The result of certain experiments made at the Veterinary School, at Alfort, is opposed to Mr. Youatt's statement. Professor Dupuy made wounds in cows and sheep, and rubbed upon these wounds sponges which had been chewed by rabid animals of the same species: yet he never succeeded in communicating the disorder in this way; but when he used a sponge that had been mumbled by a mad dog, then the disease occurred in the sheep and cows. It is still more interesting to inquire, whether the saliva of a human being, labour- ing under hydrophobia, is capable of inoculating another human being with the same complaint? Mr. Youatt says yes : that the disease has undoubtedly been so pro- duced. If this be so, the fact will teach us — not to desert or neglect these unhappy patients, still less to murder them by smothering — but to minister to their wants with certain precautions: so as not to suffer their saliva to come in contact with any sore or abraded surface; nor, if it can be avoided, with any mucous surface. On the other hand, all carefuhiess of that kind will be unnecessary^ if the disease cannot he propagated by the human saliva. Certainly many experimenters have tried in vain {0 inoculate dogs with the spittle of a hydrophobic n)an ; but there is one authentic experiment on record, which makes it too probable that the disease, though it may not be communirft/fc/ often, or easily, is yet communit'«/)/e. The experiment is said to have been made by MM. Magendie and Breschet, at the Hotel-Dieu, and to have been witnessed by a great number of medical men and students. Two healthy dogs were inoculated, on the 18th of June, 181;3, with the saliva of a patient, named Surlu, who died of hydrophobia the same day in that hospital. One of these dogs became mad on the '27th of the following month. They caused this dog to bite others, which, in their turn, became rabid also : and in this way they propagated the mala- dy, among do2s, during the whole summer. Now this is a very striking fact, yet it uught not to be considered conclusive : for it is possible that the dog might have erne mad at that time, whether he had been so inoculated, or not. It may have been a mere coincidence. We want repetitions of such experiments to settle the HYDROPHOBIA. 369 point : nevertheless, we have enough in this one experiment to make u;? use all necessary caution when engaged in attending upon a hydrophobic patient. I just touched upon the question, whether the saliva of a rabid dog could produce the disease if it fell upon the sound skin? The first of the two cases which I related as having been witnessed by mysel-f, would appear to give an affirmative answer to this question. Mr. Youatt thinks the disease would not follow such an application of the virus ; but that it cannot be received upon even the unbroken surface of a mucous membrane without the greatest danger. Horses are said to have died mad after eating straw upon which rabid pigs had died. Portal was assured that two dogs, which had licked the mouth of another dog that was rabid, were attacked with rabies seven or eight days afterwards. Mr. Oilman, of Highgate, in a little pam- phlet on Hydrophobia, quotes an instance from Dr. Perceval, in which a mad dog licked the face of a sleeping man, near his mouth, and the man died of hydrophobia, although the strictest search failed to discover the smallest scratch or abrasion on any part of his skin. At the very close of the lecture I observed, that even should it be clearly proved that hydrophobia has ever resulted from the scratch of a rabid animal's daws — the claws of a cat, for example — we are not to set it down as a sure thing that the dis- ease can be introduced into the system independently of the saliva of the diseased animal. As we know that dogs and cats are in the habit of putting their paws to their mouths when they feel uneasy there, we may readily understand how the poi- sonous saHva may be introduced by a mere scratch with the creature's nails. Mr. Youatt believes that the sahva only is capable of conveying the disease. 4. Supposing the virus to have been inserted into the part bitten, what becomes of it ? Is it immediately taken into the system, and does it, like the poison of small- pox, in some mysterious way, multiply and diffuse itself in the body, until the dis- ease explodes? Or does it remain imprisoned in the wound, or in the cicatrix, for a time ? This is an important practical question. For if the poison lurks for some weeks in the place where it was originally deposited, we mirrht successfully remove it at any time between the infliction of the bite and the period of recrudescence. Now, the facts that at this period of recrudescence the wound or scar is re-inflamed often, and almost always becomes the seat of some fresh morbid phenomena, pain, swelling, numbness and the like, spreading towards the trunk — and that, soon after this, the peculiar paroxysmal symptoms begin — these facts are strong in favour of the belief that the poison does lie inert in the place of the original hurt, for some time. Dr. Bardsley states that the recrudescent pains seem always to follow the course of the nerves, and do certainly never inflame or irritate the lymphatic glands in the vicinity, though passing in a parallel course towards the trunk. He affirms the entire absence of any fact contrary to this observation in the works of the nume- rous authors who have written on the subject. I mention this statement because it certainly is not correct. Mr. Mayo says, " in one case which I witnessed and exa- mined after death, the inner part of the cicatrix was bloodshot ; and a gland in the axilla had swelled at the coming on of the hydrophobic symptoms." And I find among my notes of Mr. Abernethy's lectures, another striking case, still more to the point. " A very intelhgent boy had been bitten by a dog in the finger: he was brought into St. Bartholomew's Hospital. Caustic had been liberally used, affecting the sinewy parts, and producing a terrible sore : yet the boy was recovering him- self, and the sore was healing. One day as Mr. Abernethy was going round tlie hospital, he saw and spoke to the boy, who said he thought himself getting well, but that he had that day an odd sennation in his fingers, stretching upwards into his hand and arm. Going up the arm, Mr. Abernethy saw two red lines, like inflamed absorbents : they doubtless were so. He affected to make light of the matter, ordered a poultice, and recommended the boy to take some medicine. Early the next morn- ing Mr. Abernethy visited the ward, pretending he had some other patient thoni whom he wished particularly to see : and when going out again, he asked the boy, in a careless tone, how he was. He said that he had lost the pain, but that he wau' very unwell, and had not slept all night. Mr. Abernethy felt his pulse, told him hi; was a little feverish, as might be expected, and asked him if he were not thiritv, 24 370 HYDROPHOUIA. and would like some toast and water. The boy said he was thirsty, and that he should like some drink; when, however, the cup was brought, he pushed ic from him : he could not drink. In forty-eight hours he was dead." Facts, such as these, would lead to the conclusion that, in cases in which ex- cision had not been performed in the first instance, the scar or the sore might be cut out with propriety at any time before the period of recrudescence : and if the case happened to be my own, I would have done this even at that period, the moment any new sensation manifested itself in the seat of the injury. Mr. Mayo, on the same grounds, advocates the removal of the cicatrix, even although the hydrophobic symptoms may have appeared. I do not mean to sajr that the facts now referred to, show with any certainty that the poison remains in the place where it was first de- posited, until the phenomena of recrudescence take place : but they afford some presumption in favour of that notion ; and in such a disease as hydrophol|ia, we are bound to act upon the very lowest presumption that affords a chance for our patient's hfe. The poison may be absorbed into the general system at the period of recru- descence, although no affection of the absorbing vessels or glands should be mani fest : through the veins, namely. Considermg the matter philosophically, we might be inclined to suppose that the poison was silently maturing its force in the general sj'stem during the period of in- cubation, just as the poisons of small-pox and of measles are presumed to do. But looking at it practically, I should recommend, under tlie circumstances already stated, the excision of the cicatrix. 5. Another important question is this. Is a man who has been bitten b}' a mad dog, and in whose case no precautions have been taken, a doomed man ? will he be sure to have the disease, and therefore to die of it ? By no fneans. But few, upon the whole, of those which are so bitten, become affected with the hydrophobia. It is curious that different species of animals appear to bo susceptible of hydro- phobia in different degrees. Thus, according to Mr. Youatt, two dogs out of three, bitten by one that is rabid, become rabid. The majority of horses inoculated with the virus, perish. Cattle have a better chance : perhaps because in them the skin is looser and less easily penetrated. A full half (he thinks) of those that were seized by a mad dog, would escape. With sheep the bite is still less dangerous. He Reckons that not more than one in three would be affected. The tooth, perhaps, has been wiped clean in its passage through the wool. The human being is least of all in danger. John Hunter states that he knew an instance in which, of twenty- one persons bitten, one alone fell a victim to hydrophobia. Dr. Hamilton estimates the proportion to be one in twenty-five. But I fear these computations are much too low. In 1780, a mad dog, in the neighbourhood of Senlis, took his course within a small circle, and bit fifteen persons before he was killed: three of these died of hydrophobia. The slaver of a rabid wolf would seem to be highly virulent and effective. These beasts fly always, I believe, at a naked part. Hence, probably, the fatality of their bites. The following statement applies exclusively to the wolf. In December, 1774, twenty persons were bitten in the neighbourhood of Troyes ; nine of them died. Of seventeen persons similarly bitten in 1784, near Brive, ten died rabid. In May, 1817, twenty-three persons were bitten and fourteen perished. Four died out of eleven that were bitten near Dijon : and eighteen of twenty-four bitten near Rochelle. At Bar-sur-Ornain, nineteen were bitten, of whom twelve died of hydrophobia within two months. Here we have one hundred and fourteen persons bitten by rabid wolves, and among them no less than sixty-seven victims ; considerably more than one-half. There is no doubt, however, that the majority of persons who are bitten by a mad dog escape the disease. This may partly be owing to an inherent inaptitude for accepting it. We see some persons who, though often in the way of it, do not contract syphilis ; there are others upon whom the contagion of small-pox has no influence. This difference exists, apparently, even among dogs. There was once a dog, at Charenton, that did not become rabid after being bitten by a rabid dog; and it was so managed that, at different times, he was bitten by thirty different mad dogs ; but he outlived it all. Much will depend also upon the circumstances and manner in which the bite is inflicted. Ifitbemade HYDROPHOBIA. 371 throigli clothes, and especially through thick woollen garments, or through leather, the saii-va may be wiped clean away from the tooth before it reaches the flesh. In the fifth volume of the Edinburgh Medical and Surgical Journal, there is a case described by Mr. Oldknow, of Nottingham, in which a man was bitten in three dif- ferent places by the same dog ; viz., in the scrotum, the thigh, and the left hand ; the bite on the hand was the last. Now it seems not improbable that but for this last bite, on a naked part, he might have escaped. At least it was a remarkable circumstance that the phenomena of recrudescence occurred only in the hand and arm. The dog is supposed to have closed his mouth after inflicting the first two bites ; and thus to have charged his teeth afresh with the poisonous saliva. It is this frequent immunity from the disease in persons who have been bitten, that has tended to confer reputation upon so many vaunted methods of prevention. Ignorant persons, and knavish persons, have not failed to take advantage of this. They announce that they are in possession of some secret remedy which will prevent the virus from operating; they persuade the friends of those who die that the remedy was not rightly employed, or not resorted to sufficiently early : and they persuade those who escape that they escape by virtue of the preventive remedy. If the plunder they reap from the foolish and the frightened was all, this would be of less consequence : but unfortunately the hope of security without under- going a painful operation, leads many to neglect the only sure mode of obtaining safety. Mr. Youatt is of opinion that the power of the virus ceases with the life of the animal. He states, that in many dissections of the dog, the saliva, in spite of all care, must have come in abundant contact with his hands, and they were not always sound. I should strongly recommend you not to act upon this opinion : but to use the same precautions, in dissecting a rabid animal, as you would use if you were persuaded that the disease might be communicated with equal certainty before and after the death of the animal. 6. A still more anxious inquiry next arises. Whoever has been bitten bj'' a rabid or a suspected animal, must be considered, and will generally consider himself as being in more or less danger of hydrophobia. This dread is not entirely removed, even by the adoption of the best means of prevention. Now, how long does this state of hazard continue ? When is the peril fairly over ? After what period may the person who has received the injury lay aside all apprehension of the disease ? To this inquiry no satisfactory reply can be given. In a vast majority of instances, indeed, the disorder has broken out ivithin tivo months from the infliction of the bite. But the exceptions to this rule are too numerous to permit us to put firm trust in the immunity afforded by that interval. Cases are recorded in which five, six, eleven, nineteen months have intervened, between the insertion of the poison and the eruption of the consequent malady. Nay, in one instance, three j'^ears are said to have elapsed, and in another the enormous period of twelve years. In these cases one cannot help supposing that some unsuspected re-inoculation, some fresh application of the peculiar virus, must have taken place. If not, then we must con- clude that the poison really hes imprisoned in the part ; and only becomes destructive when, under certain obscure conditions, and at indefinite periods, it is set afloat in the circulating blood. It is interesting to know that the same uncertainty of access has been noticed among infected dogs. On the night of the 8th of June, 1791, the man in charge of Lord Fitzwilliam's kennel was much disturbed by the hounds fighting; and got up several times to quiet them. On each occasion he found the same dog quarrelling ; at last, therefore, he shut that dog up by himself, and then there was no further dis- turbance. On the third day afterwards, the quarrelsome hound became unequivocally rabid ; and on the fifth day he died. The whole pack were thereupon separately confined and watched. Six of the dogs became subsequently mad ; and at the following widely different intervals from the 8th of June, viz., 23 days, 56, 67, 88, 155, and 183 days. There are some considerations respecting this disease which relate both to tho biter and the bitten ; the canine and the human being. And there are some which 372 HYDROPHOBIA. relate exclusively to the dog, yet concerning which, we, as medical philosophers, ought not to be ignorant. I shall advert to a few of these. One question I have already glanced at, viz., whether the disease mav be pro- duced by a heahhy, though angry dog or cat. I referred to one instance in which this was supposed to have been the case ; and I repeat that I should be more inclined to think, unless we had other examples of the same kind, that the person had been inoculated in some way that he was not aware of. But I have heard INIr. Youatt describe cases in which there had been no symptoms of rabies observed in the doer at the time the injury was inflicted, though soon afterwards the animal became decidedly rabid. It is much to be regretted that the dog is so often destroyed. When a person has been bitten by a dog or cat suspected to be rabid, the beast ought by no means to be killed, but to be secured, and kept under surveillance, and suffered, if it shall so happen, to die of the disease. If he does not die, in other words, if he is really not rabid, that will soon appear; and the mind of the patient will then be relieved from a very painful state of suspense and uncertaintj^ which might other- wise have haunted him for months or years. If the dog dies mad, the injured person will be no worse off than if the animal had been killed in the first instance : nay, in one respect, he will be better off, inasmuch as certainty of evil is preferable to perpetual and uneasy doubt. " Give a dog a bad name (says the proverb), and hang him :" and it is literally so with the imputation of madness. A poor wretch of a dog is perhaps ill, or weary, or cross, or he may have been worried already by mis- chievous boys : the cry of mad dog is raised ; and then he can expect no mercy. There are gross errors prevalent with regard to the signs of madness in the dog. If a dog be seen in a fit in the street, some person charitably offers a conjecture thai perhaps he may be mad ; the next person has no doubt of it ; and then, woe to that dog ! But Mr. Youatt assures us that the rabid dog never has fits : that the exist- ence of epilepsy is a clear proof that there is no rabies. Again, it is a verj' common belief that a rabid dog, like a hydrophobic man, will shun water; and if he takes to a river, that is thought to be conclusive evidence that he is not mad. But the truth is, that the disease, in the quadruped, cannot be called hydrophobia : there is no dread of water, but an unquenchable thirst ; no spasm attending the effort to swallow, but sometimes in dogs an inability to swallow, from paralysis of the muscles about the jaws and throat. They will stand and lap, lapping, without getting any of the liquid down. They fly eagerly to the water ; and Mr. Youatt states that all other quadrupeds, with, perhaps, an occasional exception in the horse, drink with ease, and with an increased avidity. This erroneus impression is not confined to the vulgar. In the case which I have more than once alluded to, and which is men- tioned in Hufeland's Journal, of a lad who died of hydrophobia after having been bitten by a dog that had not been, and was not then, mad, one circumstance stated in evidence of the animal's freedom from rabies is, that he drank without difficulty a large quantity of water. There is another superstitious opinion not at all uncommon, viz., that healthy dogs recognize one that is mad, and fear him, and run away from his presence, in conse- quence of some mysterious and wonderful instinct, warning them of danger. This is quite unfounded. Equally mistaken are the notions that the mad dog exhales a peculiar and offensive smell, and that he may be known by his running with his tail between his legs ; except, as Mr. Youatt says, when, wearj' and exhausted, he is seeking his home. It will not be out of place to state what are, the symptoms of rabies as observed in the dog, and as described by Mr. Youatt. The earliest* symptoms of madness in the dog (he says), are sullenness, fidgeti- ness, continual shifting of posture, a steadfast gaze expressive of suspicion, an ear- nest hcking of some part, on which a scar may generallj^ be found. If the ear be the affected part, the dog is incessantly and violently scratching it. If it be the foot, he gnaws it till the integuments are destroyed. Occasional vomiting and a depraved appetite are very early noticeable. The dog will pick up and swallow bits of thread or silk from the carpet, hair, or straw, even Hung: and frequently he will lap his own urine, and devour his own excrement. HYDROPHOBIA. 373 Then the animal becomes irascible ; flies fiercely at strangers ; is impatient of cor- rection ; seizes the whip or stick ; quarrels with his own companions ; eagerly hunts and worries the cats ; demolislies his bed ; and if chained up, makes violent efforts to escape, tearing his kennel to pieces with his teeth. If he be at large he usually attacks only those dogs that come in his way ; but if he be naturally ferocious he will dilisently and perseveringly seek his enemy. . According to Mr. Youatt, the disease is principally propagated by the fighting dog in towns ; and by the cur or lurcher in the country : by those dogs, therefore, which minister to the vices of the lower classes in town and country respectively. He maintains that if a well- enforced quarantine could be established, and every dog in the kingdom confined separately for seven months, the disease might be extirpated. This opinion is founded of course upon the behef that rabies never originates at present, any more than small-pox does, spontaneously ; but is always propagated by the specific virus. And it is corroborated by the fact that rabies and hydrophobia are unknown in some countries. I fancy that South America is, or was, a stranger to it. It appears to have been imported into Jamacia, after that island had enjoyed an immunity from the disease for at least fifty years previously ; and Dr. Heineken states that curs of the most wretched description abound in the island of Madeira ; that they are afflicted with almost every disease, tormented by flies, and heat, and thirst, and famine, yet no rabid dog was ever seen there. On the contrary, 1666 deaths from hydrophobia in the human subject, are stated to have occurred in Prussia in the space of ten years. Very early in the disease, as it appears in the dog, the expression of countenance IS remarkably changed ; the eyes ghsten, and there is slight strabismus. Twitch- mgs of the face come on. About the second day a considerable discharge of saliva commences ; but this does not continue more than ten or twelve hours, and is suc- ceeded by insatiable thirst : the dog is incessantly drinking, or attempting to drink : he plunges his muzzle into the water. When the flow of saliva has ceased he ap- pears to be annoyed by some viscid matter in his fauces ; and in the most eager and extraordinary manner he works with his paws at the corners of his mouth, to get rid of it: and while thus employed he frequently loses his balance and rolls over. A loss of power over the voluntary muscles is next observed. It begins with the lower jaw, which hangs down, and the mouth is partially open; but by a sudden effort the dog can sometimes close it, though occasionally the paralysis is complete. The tongue is afl^ected in a less degree. The dog is able to use it in the act of lap- ping: but the mouth is not sufficiently closed to retain the water. Therefore, while he hangs over the fluid, eagerly lapping for several minutes, it is very little or not at all diminished. The paralj'sis often attacks the loins and extremities also. The animal staggers about, and frequently falls. Previously to this he is in almost inces- sant action. Mr. Youatt fancies that the dog is subject to what we call spectral illu- sions. He says he starts up and gazes eagerly at some real or imaginary object. He appears to be tracing the path of something floating around him, or he fixes his eye intently upon some spot in the wall, and suddenly plunges at it ; then his eyes close, and his head droops. Frequently, with kis head erect, the dog utters a short and very peculiar howl; or if he barks, it is in a hoarse inward sound, altogether dissimilar from his usual tone, and generally terminating with this characteristic howl. Respiration is always afl^ected : often the breathing is very laborious ; and the inspiration is attended with a very singular grating, choking noise. On the fourth, fifth, or sixth day of the dis- ease, he dies: occasionally in slight convulsions, but oftener without a struggle. Mr. Youatt gives a detailed account of the appearances met with after death \u the carcases of these rabid dogs. They are not very constant or distinctive. The most curious and uniform consist in the presence of unnatural ingesta in the stomach . straw, hay, hair, horse-dung, earth. Sometimes the stomach is perfectly distended with these substances; and when it contains none of them, there is a fluid of the deepest chocolate colour mixed with olive ; or still darker, like coffee : and when neither the unnatural ingesta nor the dark fluid appear, it will be found, Mr. Youatt 2o 374 HYDROPHOBIA. says, upon carefal inquiry, that the dog has vomited much hair, hay, straw, or the like. In 1837, a few daj^s after the case of hydrophobia occurred in the Middlesex Hos- pital, I saw the carcass of a dog, that had died rabid, examined by Mr. Ainslie at his and Mr. Youatt's Infirmary. The most remarka-ble morbid appearances were in the stomach, Avhich contained some bits of straw and stick, and a considerable quantity of a dark fluid like thin treacle. In various parts of the stomach there were spots almost black, of a considerable size ; apparently produced by dark blood partly exlra- vasated beneath, and partly incorporated with, the mucous membrane. I believe that Mr. Youatt's opinion, already mentioned, of the cause of rabies ir. dogs, and in all creatures — viz., that it always results from the introduction of a spe cific virus into the system — I believe this opinion is not commonly entertained. Most people think that the disease is generated, de novo, in the dog at least ; and causes have been assigned for it which certainly are not the true or the sole causes. Thus hydrophobia in the dog has been ascribed to extreme heat of the weather. It is thought by many to be particularly likely to occur in the dog-daj's ; and to be, as Mr. Mayo observes, "a sort of dog-lunacy, having the same relation to Sirius that insanity has to the moon : which, indeed, in another sense, is probably true." Many cautions are annually put forth, about that period, for muzzling dogs, and so on: verj' good and proper advice, but, if those who have noted the statistics of the dis- ease majr be depended upon, it would be as appropriate at one period of the 3'ear as at another. Rabies occurs nearly as often in the spring, in the autumn, and even in winter, as it does in summer. M. Trolliet, wiio has written an interesting essay on rabies, states that January, which is the coldest, and August, which is the hottest month in the year, are the very months which furnish the fewest examples of the disease. The disorder has often been ascribed to want of water in hot weather, and sometimes to want of food. But M]M. Dupuytren, Breschet, and Magendie, have caused both dogs and cats to perish with hunger and thirst, without producino- the smallest approach to a state of rabies. At the Veterinary School at Alfort, three dogs were subjected to some very cruel but decisive experiments. It was during the heat of summer, and they were all chained in the full blaze of the sun. To one salted meat was given ; to the second water only ; and to the third neither food nor drink. They all died; but none of them became rabid. Nor does the supposition that the disorder has some connection with the period of sexual heat in these ani- mals appear to have any better foundation. If you are desirous of knowing what my own opinion on this matter is, I must say that I think Mr. Youatt's doctrine by far the most probable one ; that rabies never occurs except from inoculation of the specific virus. It has never been proved, and indeed it would scarcely be susceptible of proof, that the disease ever breaks out spontaneously ; large tracts of country are totally free from it ; and in nineteen cases out of twenty, perhaps, we trace the bite or the fray in which the inoculation has been efTected. If I were asked to define the seat of this terrible disease, I should place it, without hesitation, in that division of the nervous system which comprises the excito-motory apparatus ; the true spinal marrow, with its appendages of afferent and efferent nerves. Nay, I should go further, and say that it is the uppei^oart of this appara- tus, of which the functions are primarily and chiefly deranged : that the poison acts mainly upon the nervous arcs which pertain to the throat, and with which the eighth pair of nerves in particular is connected. There is nothing singular in this locahza- tion of the influence of a specific poison. The ergot of rye affects principally those arcs which belong to the uterus ; cantharides, those which govern the muscular fibres of the bladder. It is true that the mental functions are remarkably modified, and that paralysis of the lower extremities occurs, in most instances of the disease. But neither of these phenomena is constant ; and they simply illustrate, when they do happen, the facility with which any morbid state of the spinal cord may propa- Stite its influence in either direction. Whether, in hydrophobia, the essential change Be centiic or eccentric, cannot be determined with any thing like certainty : but it ysems tc me to be most probable that the sensibility of the afferent nerves of th& HYDROPHOBIA. 375 fauces, of the skin, and of the air-passages, is altered or morbidly exalted , vvhencs^, upon the application of the exciting stimulus, the peculiar sighing dyspncea, and the strangling dysphagia, are produced by a reflected influence through the central axis upon the muscles concerned in these actions. But, as I said before, the pathology of the excito-molory apparatus is as yet in its new birth. What can I say of the treatment in hydrophobia, or in rabies ? There is no well authenticated case on record, that I am aware of, in which a hydrophobic person has recovered. As it has been, so it is still, larpoj iarai 9amroj. The physician that cures is death. There can be no ground therefore for the recommendation of any espe- cial drug, or form of medicine, nor even for any general plan of treatment, after the peculiar sj'mptoms of the disease have once set in. Of course those powerful remedial agencies that are in common use among medi- cal men, have been fairly tried ; copious blood-letting, mercury, opium, arsenic, sugar of lead, oil of turpentine, the cold affusion even : and not only those, but the strong poisons that are sometimes, but not so generally, employed for other diseases: belladonna, stramonium, prussic acid,,white hellebore, strychnia, cantharides, the nitrous oxide gas : and no end of less gigantic remedies ; such as alkalies, and espe- cially ammonia, carbonate of iron, electricity and galvanism, tobacco-juice and the guaco (which was introduced into this country a few years ago with high encomi- ums for its power over the disease), the mineral acids, violent exercise : and if we take into account the substances administered to the brute also, we may increase this list by the alisma plantago, Scutellaria, box, and rue, all of which, at one *ime or another, have been vaunted as successful remedies, veratrum sabadilla, and cicu- nas poison. The difficulty of swallowing fluids, and in some cases of swallowing at all, is a serious obstacle to the fair trial of almost every form of internal remedy. It has been proposed to introduce powerful medicines into the rectum, in clysters ; but to this also the patients have been found to make great resistance. The injection of medicines into the veins has been tried. Magendie hoped that he had discovered a cure, in first largely bleeding the patient, and then injecting his veins with a corres- ponding quantity of warm water : but it has always happened with this, and with, other promising experiments, that just as the patient seemed to be about to recover, he has died. The nervous irritability has in one instance or two been much calmed by the injection of a solution of a salt of morphia into the veins. In a case treated by Professor Todd the symptoms appeared to be greatly mitigated for a time, by applying ice to the cervical portion of the spine, and to the fauces. Mr. Mayo has suggested bronchotomy : upon this ground (to use his own words), "that the principal character of the disease, and the rapid exhaustion which attends it, appear to depend in great part upon the fits of spasm and closure of the glottis, brought on, not merely by the attempt, or the idea of drinking, but by any sudden impression upon the senses. Now it is clear (he adds) that as far as the distressing feelings in the throat consist in a sense of suffocation, they would be put an end to or relieved by the establishment of a free opening in the windpipe." Dr. Marshall Hall would use, in combination with tracheotomj^, the hydrocyanic acid. Now I should be sorrj' to say any thing to damp your reasonable hope of benefit from any experiment ; but I am bound to confess to you that I should not expect the smallest advantage from tracheotomy in this disease. The mode of death offers no encour- agement to its use. There may be spasm of the glottis, but I doubt it. At any rate the patients do not die of suffocation. The death is not death by apnoea, but by asthenia. We see persons labouring grievously for their breath for hours together, who yet survive, and are presently themselves again ; persons, for instance, who are affected with severe spasmodic asthma. I have seen a man sitting up in bed a whole night long, inspiring with such difficulty that, if I had not been aware of his having scores of times, been as bad before, I should not have thought lie could exist five minutes longer. Now we have nothing of this dyspnoea in hydrophobia : and, as I said already, I am sorry, and diffident too, when I difler from great authorities on Practical points, but I see no hope of cure, nor even of sufficient benefit to counter- dance the inconvenience and hazard of the operation from the perform.mce of 376 HYDROPHOBIA. bronchotomy. The principle is that of suffering the parts gradually to recover themselves, and of allowing the patient in the meanwhile to breathe through another channel. The principle is excellent (as I shall show you by and by), where there is a permanent obstacle to the admission of air to the lungs through the larynx ; but ia hydrophobia there is no such permanent obstacle to surmount. Though )'Our patient in laryngitis should be at the point of death, yet open his wind-pipe, and he breathes again and is safe ; but it is not at all uncommon for a hydrophobic patient to lose his spasms, to swallow well, and to breathe easily, yet he does not recover. This amend- ment is the prelude of death, the last flicker of the expiring lamp. Since I lectured upon this subject last year. Dr. Latham has told me the following circumstance respecting a patient whom he treated for hydrophobia, in the Middlesex Hospital. He went one day to the ward, fully expecting to hear that the patient was dead. But he found him sitting up in his bed, quite calm, and free from spasm : and he had just drunk a larije jug of porter. "Lawk, sir (said a nurse who sat by), what a wonderful cure !" The man himself seemed surprised at the change. But he had no pulse; his surface was cold as marble. In half an hour, he sank back, and expired. Furthermore the experiment in question has been tried, and it has been tried by its proposer, Mr. Mayo, upon the dog, without affording, as Mr. Youatt assures us, the slightest rehef. In the matter of cure, surgery, I fear, is as impotent as physic. Not so, however, in the matter of prevention : this is the most important part of the practice. The early and complete excision of the bitten part is the only measure in which we can put anj' confidence: and even here we are met with a source of fallacy. In the majority of cases no hydrophobia would ensue, though nothing at all were done to the wound. How can we know, then, that the disease is ever pre- vented by its excision ? No doubt many persons go through the pain of the operation needlessly. But in no given case can we be sure of this. They get at any rate relief from the most harassing suspense, with which they would probably have been tortured for months. And if a large number of bitten persons, who had suffered the wound to heal as it would, could be compared with an equal number who had had the bitten part cut out, hydrophobia would be found a frequent consequence of the bite in the first class — a very rare consequence of it in the second. Mr. Youatt, who trusts to caustic, and who has himself been bitten seven times, and is yet alive and well, tells us that he has operated, with the caustic, on more than four hundred persons, aU bitten by dogs, respecting the nature of whose disease there could be no question ; and that he has not lost a case. One man died of fright, but not one of hydrophobia. Moreover, a surgeon of St. George's Hospital told him that ten times that number had undergone the operation of excision there, after being bitten by dogs (all of which might not, however, have been rabid), and that it was not known that any one had been lost. Mr. Youatt, I say, trusts to caustic ; and the caustic he uses is the nitrate of silver. But I advise you to trust to nothing but the knife, if the situation of the bite will allow you to employ it effectually. If the injury be so deep or extensive, or so situated, that you cannot remove the whole surface of the wound, cut away what you can ; then wash the wound thoroughly, and for some hours together, by means of a stream of warm water, which may be poured from a tea- kettle ; place an exhausted cupping-glass from time to time over the exposed wound; and finally apply to every point of it a pencil of lunar caustic. If you cannot get the solid caustic in contact with every part, you had better make use of some liquid escharotic : the nitric acid, for example. In my own case — and what I should choose for myself I should advise for another — if I had received a bite from a decidedly rabid animal upon my arm or leg, and the bite was of such a kind that the whole wound could not be excised, my reason would teach me to desire, and I hope I jhould have fortitude enough to endure, amputation of the limb, above the place of the injury. But if the wound is of such a size, and in such a part, that it can be excised, what IS the proper way of cutting it out? Were I to give you any opinion, as from myself, upon that point, you might think, perhaps, that I was stepping beyond my proper province. I shall, therefore, again retail to you the advice of my old master. HYDROPHOBIA. ^71 Mr. Abernethy. The cell (he says) into which a penetrating tooth has gone, must be cut out. Let a skewer be shaped, as nearly as may be, into the form of the tooth, and then be placed in the cavity formed by the tooth ; and next let the skewer, and the whole cell containing it, be removed by an elliptical incision. We may examine the removed cell, to see if every portion with which the tooth might have come in contact has been taken away : the cell may even be filled with quicksilver, to see if a globule will escape. The efficient performance of the excision does not depend upon the extent, but upon the accuracy, of the operation." Mr. Aberneihy was of opinion that when once the poison had been imbibed into the system, nothing ever had done good, and nothing, probably, ever would. I should be sorry to be so absolutely despairing in respect to a disorder from which dissection after death discloses no reason why the patient might not recover. He used to add, that as bleeding had been much extolled, had he hydrophobia he wfiuld allow a surgeon to bleed him, even to death. Like Seneca he would be willing to have his veins opened, though his disease might not permit him to indulge at the same time, like Seneca, in the luxury of a warm bath. I say early excision is the only sure preventive ; but let me repeat that it will, in all suspicious cases, be advisable, if, for any reason, the operation has been omitted in the first instance, to cut out the wound, or the cicatrix, within the first two months, or at any time before the symptoms of recrudescence have appeared. One would do it, though with less hope, as soon as possible ufter they had appeared ; but I do not expect to hear of excision being successful then in stopping the disease. Dr. Bright has recorded a case in which the arm was amputated upon the supervention of tingUng, and other symptoms, in the hand, in which the patient had been bitten some time before ; but the amputation did not save him. It has been proposed to fill the wound with ink, and then to wash it until every trace of the ink is gone; in this way, it is conceived, the complete ablution of the poison also will be ensured. With a timid or an obstinate patient, who would not submit to the knife or the caustic, some such expedient ought to be diligently tried ; but it would be better to try it after the excision, or after the application of the escha- rotic substance. It is impossible to take superfluous pains to obviate so fearful a disease as hydrophobia. It has been recommended, after the wound has been excised or cauterized, that it should be prevented from healing, and made to discharge for a long time, by means of irritating applications. This may be advisable when thorough excision, or com- plete cauterization, cannot be effected ; but I should think it quite useless as auxihary to those expedients, and only likely to keep up, or to produce, a hurtful irritability of the system. I should perhaps have mentioned before, a theory, and a plan of preventive treat- ment, which made a great figure in all the journals, foreign and domestic, a (o\v yeaisi ago. It was pretended by a Russian physician. Dr. Marochetti, that some time be- tween the third and the ninth day after a person has been inoculated with the hydro- phobic poison, by the bite of a rabid dog, small pustules appear on or about the frasnum of the tongue, containing a small quantity of sanious fluid, of a yellow or greenish colour. Pustules of the same kind were declared to exist also under the tongues of the mad dogs themselves. Now Dr. Marochetti pretended further, that if, from the very time of the bite, you gave the patient large doses of the decoction of broom tops, and looked out for the eruption of these pustules, which seldom lasted more than twenty-four hours, you might infallibly prevent the disease by opening and emptying the pustules, and then cauterizing them with a red-hot iron ; and after- wards causing the patient to gargle his mouth with that same decoction of broom. He held that the poison was deposited there for a short time, and then re-absorbed into the sj^stem ; and he proposed to prevent such re-absorption. This was a very pretty theory ; and took mightily in the medical world. But it has turned out a sort of hoax. I do not mean a wilful hoax on the part of Dr. Marochetti ; for I have no doubt that he contrived to hoax himself. These pustules have been looked for again and again ; but they have never been discovered in Englishmen affected with hydro- phobia ; nor in Enghsh mad dogs. The truth seems to be that the mucous foDicles 2g2 378 HYDROPHOBIA. of the mouth, geneially, and those at the base of the tongue, and those beneath the tongue, in particular, are commonly enlarged and exaggerated in the dog, and in the human animal, labouring under the disease ; and these enlarged and altered follicles were regarded by the Russian phj'sician as a specific eruption, which furnished the virus and pabulum of the complaint. As almost every drug that has ever been included in any Pharmacopoeia has been administered with the hope of checkinp^ the disease, so a great number of medicines and measures have been praised as preventives. Some people have great fuith in sea bathing; and they go to the coast to be ducked and half drowned every day for six weeks : and if they escape hydrophobia they conclude that the immersion in the salt water has saved them. Some of the specifics, as you may suppose, are great secrets ; and they who possess them — Avhether they beheve in them or not is another matter — sell them at no cheap rate to those who, having been bitten by the dog, are weak enough to be bitten again by the quack. The composition of several of them has transpired ; and they are found to consist either of ingredients the most insigni- ficant and worthless, or of poisons of which the inefficacy had already been ascer- tained. The celebrated pii' is antili/ssus, which was introduced by no less a person than Dr. Mead, into the London Pharmacopoeia, was a mixture of ash-coloured liverwort and black pepper. The Ormskirk medicine, long famous, and scarcely obsolete yet in the north of England, was made up of bole armeniac, alum, chalk, elecampane, and oil of aniseed. The Tonqidn medicine was composed of cinnabai and musk : and the Tanjore pills Avere a combination of mercury and arsenic. Even now scarce a year elapses but some correspondent of the newspapers, whose philan- thropy is more conspicuous than his judgment or his knowledge, recommends a new and infallible preventive. I confess to you that 1 have not the slightest faith in any one of them ; but as I have a great respect for Air. Youatt, and as he is not fjidtc so sceptical as I am on this point, and as patients or their friends will insist upon the adoption of protective measures sometimes, when the local means of prevention have been omitted or imperfect, I will tell you what he (Mr. Youatt) has -done in respect to these prophylactic drugs. In the first place he never succeeded in curing the disease in the dog with any thing that he had ever tried. In the way of prophylaxis, he experimented with a great number of substances. He thought that the box-wood, which is the basis of some celebrated preventive drinks in Hertfordshire and Kent, had some efl^ect. He tried the alisma plantfigo, the boasted elRcacy of which had been strictlj^ inquired into by the magistracy of Toula, and the receipt purchased by the Russian government at an immense price. But he had no success with it. He then put the belladonna to the test, beginning with two grains, and increasing the dose to a scruple twice every day, and continuing this for six weeks : and he says he is confident that he saved several dogs ; but he lost almost as many. They all became debihtated and most rapidly emaciated. Then, in the year 1820, his attention was directed to the Scutellaria lateriflora, which Dr. Spalding, an American physician, had found highly successful as a pre- ventive of rabies: and upon trial of it, he soon was brought to regard it as really valuable : and (not to tire you with a detail of his proceedings in the interim) he at length combined it with belladonna: "and the result" (I here quote his own lan- guage) "has been a medicine which I cannot, dare not, call a specific; for it has failed : but the use of which, in the cases of doubt and fear to which I have alluded, 1 would most earnestly recommend." He relates two experiments, which seem to have made a great impression upon his mind. They are as follows : — " Three pieces of tape were thoroughly moistened with the saliva of a rabid dog, and inserted as rowels in the polls of three other dogs. To two the Scutellaria and belladonna were given : the third, a fox-hound bitch, was abandoned to her fate. On the 2;Jth aay after the inoculation she became rabid." The others, at the time this was written, i. c, some months afterwards, were living and well. He afterwards took the same two dogs, and a third. He moistened two pieces of tape with the saliva of a rabid dog, and inserted them in the polls of one of the old dogs, and of the third dog. Another piece of tape, dragged repeatedly through the EPILEPSY. B^ mouth of tho same rabid dog twenty-four hours after its death, was inserted m the poll of the second of the old dogs. This dog and the new one were suffered lo lake i.heir chance. To the other old dog the medicine was given. In the fourth week the new dog died undeniably rabid. The other two survived. I repeat that I have no faith in these preventives. But sometimes some of them piust be tried ; and I would prefer those which are thus sanctioned b}'' Mr. Youatt's good opinion to any others. And with respect to the established disease, I think that if I were tho unhappy subject of it, I should wish to be put into a hot air bath, and thoroughly sweated, and to lake opiates ; not so much in the hope of recovering as with a view to the euthanasia. But with all respect to those gendemen who advocate that practice, no one, if I could help it, should make a hole in my wind-pipe. LECTURE XXXV. Epilepsy. Its symptoms and varieties; duration and recurrence of the parox- ysms ; periods of life at which they commence ; warnings. Effects of the paroxysms, immediate and ultimate. Pathology. Anatomical characters. Causes. The great functions of which the brain is the material instrument, are sensation, thought, and voluntary motion. The influence of the will is a cerebral influence : it reaches and acts upon the muscles through the interposition of the spinal cord. Motions that are involuntary belong more exclusively to the system of the true spinal marrow. Yet cerebral changes, morbid states of the brain, may excite them. . I have shown you that all these functions are liable, under disease, to be sepa- rately affected, and each in various ways and degrees. The number of combina- tions capable of arising out of disordered conditions of two, or three, or all of these functions, is very great. Yet the symptoms proper to the nervous system do arrange themselves into groups sufficiently detinite and constant to allow of our giving them distinctive names, and making them separate objects of inquiry. At the same lime, as might indeed be expected, these several groups have strong resemblances to each other. They are obviously of the same family : " facies non omnibus una, nee diversa tamen ; quahs debet esse sororum." Occasionally the features are so near alike, that we find it somewhat puzzling to determine with which of the sisters we are conversing ; but usually there is some mark or oilier by which the individual may be identified. Of these essentially nervous diseases, there are several in which the most promi- nent and obvious of the phenomena relate to the muscular system ; irregular, violent, and involuntary contractions occurring of muscles which, in the healthy state of the body, are subject to the control of the will. I have spoken of two very frightful dis- orders belonging to this head: — oi^ tetanus, namely, in which the muscles of volun- tary motion present the most striking changes, being affected with tonic spasm ; while the sensibility undergoes no other alteration than what is a consequence of that spasm, pain I mean in the muscles themselves ; and the intellectual functions continue undisturbed : — and of hydrophobia, in which the natural sensibility suffers much, and the mental functions some derangement ; yet still the characteristic fea- tures of the malady depend upon the irregular and uncontrollable action of muscles usually obedient to volition. The disease which I am next to consider is scarcely less terrible to witness, when It occurs in its severer forms, than tetanus or hydrophobia ; but it is not attended with the same urgent and immediate peril to life. Yet it is, upon the whole, pro- ductive of even more distress and misery; and is liable to terminate in worse than death. You will understand that I am alluding to Epilepsy: a disease not paiotul ^80 EPILEPSY. probably in itself ; seldom immediately fatal ; often recovered from altogether : yet apt, in many cases, to end in fatuity or insanity ; and carrying perpetual anxiety and dismay into those families which it has once visited. The leading symptoms of epilepsy are, a temporary suspension of consciousness, with clonic spasm ; recurring at intervals. It is impossible to frame a perfect dcfinilion of epilepsy ; nay, so various are its forms, so numerous its modifications, that no general descriptmi even of it can be given. It will be necessary for me therefore here (as it has been stated before) to describe first the most ordinary type of the disease, as a standard ; and then *.o note the several variations from that standard which are known to occur in practice. A man, then, in the apparent enjoyment of perfect health, shall suddenly utter a loud cry, and fall instantly to the ground, senseless and convulsed. He strains and struggles violently. His breathing is embarrassed or suspended ; his face turgid and livid : he foams at the mouth ; a choking sound is heard in his wind- pipe ; he appears to be at the point of death by apncea. But presently, and by degrees, these alarming phenomena diminish, and at length cease ; the patient is left exhausted, heavy, stupid, comatose : but his life is no longer threatened. And in a short time he is once more, to all appearance, perfectly well. The same train of morbid phenomena recur, however, again and again, at different, and mostly at irregular intervals. — This is a brief description of the most ordinary form of epilepsy. The suddenness of the attack is remarkable : in an instant, when it is least ex- pected by himself or by those around him, in the middle of a sentence, or of a ges- ture, the change takes place ; and the iniserable sufferer is stretched foaming, strug- gling, and insensible upon the earth. This fearful suddenness is expressed in the name of the disease, ln'a»;4''a, a seizure, an abrupt invasion. The ancients, among whom the complaint was well known, superstitiously ascribed it to the malice of demons, or to the anger of their offended deities. If a person Avas seized with epi- lepsy in the forum, it was considered an ill omen, and the meeting was at once dissolved, and all public business suspended for that day. Hence the disease was called morbus comiticdis. 3Iorbus qui sputatur was another of its names, because those present were accustomed to spit upon the epileptic man, or into their own bosoms ; either to express their abomination, or to avert the evil omen from them- selves. In this country its common designation is the falling sickness : or, more vaguely Jits. The cry which is frequently, though by no means always, uttered, is generally a piercing and terrifying scream. Women have often been thrown into hj'-gierics upon hearing it. It is said to have caused pregnant females to miscarry. Even the lower animals appear to be sometimes startled and alarmed by a note so harsh and unnatural. Dr. Cheyne informs us that, upon one occasion, "a parrot, himself no mean performer in discords, dropt from his perch seemingly frightened to death by the appalling sound." The muscular convulsions are strong, irregular, and often universal. In most of the fits of which I have happened to see the com- mencement, the first effect of the spasm has been a twisting of the neck, the chin being raised, and brought round by a succession of jerks, towards one shoulder: and one side of the body is, usually, more strongly agitated than the other. The features are always greatly distorted. The brows are knit ; the eyes sometimes quiver and roll about, sometimes are fixed and staring, sometimes are turned up beneath the lids, so that the cornea cannot be seen, and the white sclerotica alone is visible ; the mouth is twisted awry ; the tongue thrust between the teeth, and caught by the violent closure of the jaws, is bitten, often severely ; and the foam which •ssues from the mouth is reddened by blood. The hands are firmly clenched, and the thumbs bent inwards upon the palms : the arms are thrown about, striking the chest of the patient with great force, or bruising themselves against surrounding objects, or inflicting hard knocks upon the friends and neighbours who have has- tened to the patient's assistance. It frequently happens that the urine and excie- ment are expelled during the violence of the spasm : and seminal emission some- f'mes takes place. The spasmodic contraction of the muscles is occasionally so EPILEPSY. 381 powerful as to dislocate the bones to which they are attached : the joints of the jaw, and of the shoulder, have been thus put out ; and the teeth are sometimes frac- tured. When the convulsive paroxysm is over, the patient falls into a deep sleep. You might imagine that he slept from exhaustion, hke a man Avorn out by great fatigue; but there is something more than this ; the patient passes into a state of incomplete coma, or rather the insensibility continues after the convulsions have ceased. When he wakes he is often confused and incoherent for a time ; by degrees, however, he resumes his ordinary appearance and condition : but he remembers nothing of what passed during the fit. You may suppose that so much irregular contraction of the muscles of voluntary motion is not likely to occur without some derangement or modification of the func- tions of the circulation. The breathing is irregular, gasping, or arrested. The heart palpitates violently against the ribs during the paroxysm ; the pulse becomes fre- quent and feeble ; and sometimes it ceases to be tangible at the wrist during the height of the fit, and begins to be felt again as the spasms subside. The turgescence of the face indicates obstruction of the venous circulation ; the cheeks and lips become purplish and livid, and the veins of the neck and forehead are visibly dis- tended. This, then, is one form, the most severe and the most common as well as the best marked form, in which an epileptic attack occurs. But there is a large class of cases, in which the symptoms are much more mild. There is very shght and transient, or even no convulsion at all ; no turgescence of the face ; no foaming at the mouth ; no cry ; but a sudden suspension of conscious- ness, a short period of insensibility, a fixed gaze, a totter perhaps, a look of confu- sion ; but the patient does not fall. This is momentary ; consciousness presently returns ; the patient resumes the action in which he had been previously engaged, and is not always aware that it has been interrupted. Sometimes, with this tempo- rary abeyance of the mental functions, there is some shght evidence of convulsion or involuntary action ; the fingers of one hand, or less commonly of both, are moved irregularly, and without any object ; or the eyes roll or are turned upwards : or the muscles of the face are twitched. Sometimes the patient is himself aware of what has been his condition, but shows some cunning in endeavouring to conceal it. This slighter attack is called by the French, petit mal; while the severer form is named grand mal. The former is spoken of also as epileptic vertigo, and distin- guished by that appellation from the epileptic fit. Of afl^ections so different in degree, and in some respects so dissimilar in kind, you may be disposed to ask whether they really constitute the same disease. That they are essentially of the same stamp, we have this evidence ; that both forms of attack occur in the same individuals. Sometimes a patient will suffer many recur- rences of the epileptic vertigo, and at length will become affected with violent epi- leptic fits. Or the two forms will intermingle, sometimes the milder happening, sometimes the severer. In such cases we cannot doubt that the attacks are the same in nature, though different in form and degree. And when (as sometimes happens) we meet with the slighter disease alone, we cannot refuse to assign to it the charac- ter and the name of epilepsy. Between the two extremes there are many links of gradation. Sometimes the sufferer sinks or slides down quietly, and without noise ; is pale, is not convulsed at all, but insensible ; much like one in a state of syncope. After recovering, he remains sick, languid and confused, during the remainder of the day. You will ])erceive, from what I have now said, the difficulty of giving any single description of epilepsy, which will include all its varieties. It is of course still more difficult to offer a strict definition of the disease. CuUen defines it to be " musculo- rum convulsio, cum sopore." Dr. Copland furnishes a larger and more compre- hensive definition : " Sudden loss of sensation and consciousness, with spasmodic contraction of the voluntary muscles, quickly passing into violent convulsive distor- tions, attended and followed by sopor, recurring in paroxysms often more or less regular." 382 EPILEPSY. But almost every one of these circumstances may, in its turn, be wanting. There may be no convulsion ; there may even be very slight and transient interruption of consciousness ; there may be no subsequent coma or sopor ; there may be no recur rence of the attack. Yet I trust that you now have obtained some general notion of what is meant by an epileptic seizure. And I go on to inquire into several most important points con- nected with the paroxysms. In the first place they vary considerably in duration. Sometimes, as T have already staled, the seizure is slight, and does not occupy more than a moment or two of time. But even the severer attacks are often over in a few minutes. They seldom continue longer than half an hour, and probably the average duration may safely be laid at between five and ten minutes. Attacks that are spread over three or four or more hours, generally consist of a succession of paroxysms, with indistinct intervals of comatose exhaustion. In the long-continued fits, or in the protracted suc- cession of fits, the patient often dies. The periods at which the paroxysms return are also extremely variable. Occa- sionally the patient dies in the first paroxysm ; occasionally, though he recovers from it, he never has another. Both of these occurrences are rare. Rather more frequently the fits recur at very long intervals ; at the distance, I mean, of many years. Most commonly of all, they revisit the sufferer at irregular periods of a few months or weeks : sometimes they are repeated at intervals of a few days : some- times every day or every night : and not very unfrequently they take place many times in the twenty-four hours. This extreme frequency of repetition belongs prin- cipally to the slighter imperfect seizure, the petit mal. Sometimes the fits observe a strictly regular period of return ; but, for the most part, they are quite uncertain and ij-regular. The time of life at which the fits commence, and the circumstances attending their commencement, are deserving of notice. They not uncommonl)^ begin in infancy. Those fits of convulsion to which young children are subject during the first dentition, and which sometimes appear to depend upon the irritation of teeth- ing, and sometimes upon manifest disorder of stomach and bowels — these fits are not distinguishable in their phenomena from genuine epdepsy ; and we must reckon them as instances of epilepsy. It has been remarked by some one, that if a'ou can trace the early histor)'' of an adult epileptic, you will almost always find that he or she suffered infantile convulsions. [This is true. Epileptics, it will very generally be found, were affected with repeated attacks of convulsions during the period of infancy. In many subjects, however, we have known the disease to commence immediately subsequent to puberty, or even late in life. In the majority of these latter cases the disease appeared to be the result of a life of intem- perance. — C] To what extent this is true I do not know, but I recommend it to you as a point worth attending to in your future opportunities of observation. The epileptic attack may come on, for the first time, at any age. According to Dr. Bright (whose account of the disease, though short, is particularly perspicuous), the most common periods are about the age of seven or eight years, probably about the time of the second dentition ; and from fourteen to sixteen, shortly before the age of puberty. And the disease (he says) is very apt to occur for a few years subsequently to this. But sometimes the first fit has taken place between the ages of thirty and forty ; in not a few cases after sixty ; and occasionally quite in the decline of life. Dr. Bright offers a little piece of theory in respect to the periods at which epi- lepsy is apt to begin. It is a reasonable piece of theor}% and serves to tie the alleged facts to one's memory, even if it be not yet proved to be true. Doubtless in many cases the circumstances that determine the first attack are quite accidental. But setting aside these casualties, he says " there are leading periods in the evolution of the frame, and peculiar circumstances connected with certain periods, which may well be considered as influential in the production of the disease. In infancy the nervous system is delicate, and easily acted upon by various causes of irritation. Then follows the trying period of teething. In a few years the second dentition EPILEPSY. 383 occurs. In a few years later, all the great changes connected with the age of pu- bert3^ To this follow the excesses and exposures of manhood ; and after the lapse of years, the vigour of the system fails, and many causes act to derange the nice balance of the constitution; the bowels often become sluggish; changes more or less serious take place in the structure of the arterial and venous system ; and many causes, organic or functional, which had before been unable to exert an influence oa the vigorous frame, acquire power from its relative weakness." The first accession of the disease takes place more commonly before than after puberty. Of sixty-six epileptic women, in whom the outset of that disease and the first period of menstruation were carefully noted, thirty-eight had epileptic fits before, and twenty-eight not till after that period. The attacks are very apt to come on during the night ; in the commencement of the disease, they frequently are confined to 'he night. They are said chiefly to occur at the moment when the patient is sinking into sleep, or awaking from sleep. How far this is true I cannot tell. When the disease is yielding, the fits often happen in the night only; so that after they have, for a certain period, taken place in the day-time, or during the day and night, indiscriminately, it is reckoned a good prognostic sign if they begin to restrict themselves to the night. Som.e patients, under these circumstances, suppose that the physician has particular remedies that will make the fits happen in the night rather than in the day ; and they ask for these r^edies. Sometimes each paroxysm arrives unannounced and unexpected ; sometimes dis- tinct ivurnings of its approach are given. The latter is less frequent than the former. Georget affirms that the premonitory symptoms do not occur more than four or five times in a hundred cases. I am sure that this is much understated. When warning symptoms do happen, they are sometimes spread over a considerable period ; several hours, or a whole day ; sometimes they last just long enough to enable the patient to remove from a situation in which a fall would be attended with unusual danger: to dismount from horseback, to lie down in a boat, to get away from the fireplace, from the edge of a precipice, from the vicinity of water, to assume the horizontal position of his own free will and in his own manner, or to give notice to those about him of what is going to befall him. In some cases the warning is too short and sudden even for this. The kind of notice that he receives is very variable indeed. Often it consists in some unnatural state of the mind, the feelings, the temper ; the patient is fidgety, irritable, low-spirited, timid, sullen ; or, on the other hand, he feels unusually strong, and hearty, and cheerful. Sometimes there is a notable change in some one or more of the natural functions, or of the bodily sensations ; the patient loses his appetite, or his appetite becomes voracious ; a great flow of urine takes place ; ho smells an ill smell, is aware of a strange taste, hears extraordinary noises, or seesr spectral illusions ; not mere specks floating before him — muscce vohtantes — but dis- tinct forms of persons and things. This is not very common, but it certainly happens. The late Dr. Gregory, of Edinburgh, was assured by a patient of undoubted veracity, that always, when he had a fit of epilepsy approaching, he fancied that he saw a httle old woman in a red cloak, who came up to him, and struck him a blow on the head, and then he immediately lost all recollection, and fell down. Headache, giddiness, dim or dazzled vision, are all of them common symptoms among those which have been observed to be precursory of epilepsy. Sometimes there are circumstances which are obvious to a bystander : a flushing of the face, or lividity : difficult articulation ; vomiting. Of twenty-one epileptics treated in the hospital at Wilna, by Joseph Frank, vomiting announced the paroxysm in seven. Som.e of the uneasy feelings are apt to come on and continue even for several days previously to the attack ; restlessness in particular, disturbed sleep, distressf'ul dreams, a peculiar and sudden coldness of the extremities. An internal working is a phrase often used by such persons to express a sensation which is probably in describable. But the most curious precursory symptom of all, if we except the spectral illu sions, is what is called the epileptic aura. This is a sensation which is likened by different patients to different things ; to a stream of water or cold air, to th*^ tmkiing 364 EPILEPSY. of water, to the creeping of a spider. The sensation proceeds commonly from some distant part of the body. — from one of the extremities, from a thumb or linger, or to some spot on the trunk, — and runs along the skin towards the head : occasion- ally it gets no further than the pit of the stomach: as soon as it reaches the head, or stops at the epigastrium, or elsewhere, the patient's consciousness forsakes him, and the paroxysm declares itself. There seems to be some analogy between this epileptic aura and the well-known sensation, to be spoken of hereafter, of a ball rising from the stomach to the throat, and constituting the globus hystericus ; except that in cases of epilepsy the sensation commonly begins in an extremity, and not in the stomach : and the fit comes on when it reaches the head and not the throat. Sometimes, I think, these two sensa- tions are blended. In some instances, spasms of the muscles of the part whence the aura proceeds »re observed to take place prior to the more general state of spasm. This aura is certainly a very curious phenomenon. It has been thought to depend upon some change propagated along the nerve upwards to the brain, and to be some times connected with some injury done to, or some morbid impression made upon, an afferent nerve. I think that this explanation may apply to some cases. Dr. John Thomson, of Edinburgh, used to state in his lectures, that h-e. had known epilepsy to begin with an aura proceeding from an old cicatrix in the side. In a patient of my own, who was subject to epilepsy, the warning sensation commenctd in one of his thumbs, which presently after began to be twisted inwards ; but by tying his handkerchief tightly round the thumb, he could prevent the fit. Dr. Sey- mour mentions the case of an epileptic boy, who had learned to protect himself against a threatened paroxysm, by biting his tongue. In other cases the aura probably originates in some change w'ithin the head, and is analogous to the numbness or tingling that is often felt in some part of the body or extremities immediately before an attack of palsy or apoplexy. There is no real inconsistency in this twofold explanation : the source of the aura may be centric or eccentric ; so also may the exciting cause of the paroxysm ; as, in due time, I shall explain to you. A knowledge of these warning circumstances is clearly of importance, always as far as respects the comparative security of the patient during the attack ; sometimes as afibrding us the opportunity of slaving off the fit altogether. And it is necessary to remark, that they sometimes give, as it were, a false alarm; they occur, and yet, although no measures of prevention are taken, no paroxysm follows. The phenomena that succeed the paroxysm are also of great interest and moment. I have already apprised you that the convulsions generally terminate before the insensibility is over: the patient draws, perhaps, two or three deep sighs, and ceases to struggle. Some few persons are quite themselves again in a few moments ; some appear to recover consciousness, and then fall into a deep and prolonged slumber; but many do not regain their consciousness at all upon the cessation of the convul- sions, remaining in a state of profound stupor, from which, however, they can gene- rally be roused for a time. This state of coma (for it is nothing else) has been known to last a week. After the patient emerges from it, he is sometimes merely languid and inert: sometimes he is like a person stunned, or in a state approaching to idiocy, which gradually clears up ; sometimes he is furiously delirious for a short time: not unfrequenlly there is a degree of partial paralysis, which also usually soon goes off", though it occasionally is permanent ; the eyes are fixed, or he squints, or the pupils are dilated, or he drags a leg, or he falters in speech. Most commonly he speaks of headache, or discomfort of some kind. It is very seldom that the patients have any recollection whatever of what has passed during the fit. Many of them are not aware that they have had a fit: and those who do know it, discover the fact by finding themselves wet or dirty ; by the injuries they have received during the convulsions ; by the soreness of the bitten longue ; by the bruises of their limbs ; or by the confused or painful sensations which they subsequently experience, and which they have learned to associate with me conviction that a fit lias happened, by having been informed on previous occasions EPILEPSY. 385 when they felt the same sensations, that they had suffered a paroxysm of insensi- biUiy and convulsions. Upon the whole, it is seldom that any permanent ill effect can be noticed as having been left behind it by any one single fit ; but, alas ! this cannot often be said of I heir repetition. Doubtless a single paroxysm does often leave the patient in a worse condition than that in which it found him ; but this does not become perceptible to an ordinary ob- server, until after the alteration has been rendered apparent by repeated fits, and repeated small additions to the permanent injury. The friends of the patient remark that his memory is enfeebled in proportion to the number of his attacks ; that his mental power and intelligence decline. His features even assume, by degrees, a peculiar character; and too often he sinks into hopeless fatuity, or con- firmed imbecility or insanity. It is this tendency which renders epilepsy so sad anu fearful a disease. Foville affirms, that the intellectual degeneration is more constant, and comes on more early, in persons who are principally afflicted with the epileptic vertigo, the petit mal, the imperfect seizure, than in persons in whom the grand mat, the vio- lent and decided paroxysm, takes place. Dr. Copland, on the other hand, is of opinion, that " the more severe the fits, the more is that result to be dreaded. This is a point which can only be settled by statistical facts. And as we all have the opportunity of collecting some such facts, and of adding them to the general stock, I mention this, and some other points that are still uncertain or disputed, as worth bearing in mind. More, probably, depends upon the repetition of the fits, than upon their precise nature or severity. Cases do occur in which epileptic persons preserve their faculties to a good old age; but those who are early epileptic do not often attain old age ; and ivhcnever the disease comes on, if it repeats itself frequently, it is much more often than not followed by impairment of the mind, or by some apoplectic or paralytic affection, which implies and accompanies the mental change. You will sometimes hear the cases of Julius Ccesar, of Ma- homet, and of Bonaparte quoted, as examples of high intellectual power, existing and remaining in spite of epilepsy : — and it is allowable, perhaps, to make use of such cases for comforting the friends of epileptic persons : or for giving the advantage of sustained hope to the patient himself. But, in truth, these cases are not worth much. Napoleon is said, I know not upon what authority how- ever, to have suffered something like epilepsy during sexual intercourse. This is not very uncommon in persons subject to that disease. And, with respect to Julius Caesar, we learn from Suetonius, that it was only in the latter part of his life that he laboured under epileps}^ ; and that he had two attacks while engaged in business. Having now described the phenomena of epilepsy ; the periods of life at which it is most apt to commence ; its varieties ; and its tendency and termination : let us next inquire what is known respecting the real seat and nature of this strange and melancholy complaint. The functions that are affected are clearly the functions of the brain. Sensation, thought, and motion regulated by the will, are the natural functions of that organ. The temporary abeyance of sensibility, thought, and volition, and violent and ir- regular action of the muscles which are thus withdrawn from the empire of the will, constitute a paroxysm of epilepsy. We have, in this malady, another illus- tration of the fact, that when the controlling influence of the sensorium is suspended, the peculiar functions of the spinal marrow are exercised, not only in a disorderly, but also in an unusually energetic manner. That the brain and the spinal marrow, though physiologically distinct, are )'et intimately connected with, and dependent upon, each other, a thousand familiar facts assure us : and there are good reasons for believing that the change, whatever it is, w'hich is the immediate precursor and cause of the epileptic fit, may sometimes originate in the spinal cord, and thence extend to the brain ; and sometimes originate in the brain, and communicate itself to the spinal cord. Dr, Marshall Hall's doctrine, that all convulsive diseases are diseases of the spinal marrow, cannot be properly applied to this convulsive disease 25 2h (i86 EPILEPSY. of epilepsy. It is true that the spinal cord is concerned whenever there is convul- sion ; but it is concerned in every voluntarij movement also, through the inslru- mentalit}' of the brain itself; and it ma}' be, and often is, irregularly influenced by a disordered and unnatural state of the brain. Tetanus may fairly be regarded as 1 disease of the cord and its proper appendages. The spasms arise and reach their height, while the powers of thought and sensation are undisturbed, and while vo- lition remains, although the morbid condition of the cord renders it inefTectual. In epilepsy, these cerebral functions are always implicated. There is always a loss of consciousness : and in epileptic vertigo, the petit mal, there is frequently a suspen- sion of consciousness only, icithout any convulsion at all. The brain, therefore, . we must consider to be essentially concerned in this disorder. What the precise state of the nervous matter may be, which determines the loss of consciousness and the spasms, we can only conjecture. A derangement in the relation between the arterial and venous circulation within the head ; a temporary pressure somehow arising ; a determination of blood towards the head ; a diminu- tion of the natura^ ''uantity of blood sent thither from the heart ; all these have been assigned as possible causes of the paroxysms. Plausible reasons might be given in favour of the operation of each of them ; but the speculation is more curious than useful. We have not yet penetrated the mystery of these remarkable phenomena, and it will be more profitable to turn to another question, which admits of a somewhat more definite answer, viz. : what is the morbid anatomy of epilepsy ? Suppose that a person who has had epileptic fits, but in whom they have not been followed by any durable affection of the intellectual or locomotive functions, dies of some other malady ; and you may have the opportunity of minutely examining the condition of the nervous system. Ofien you will find nothing at all which can throw any light upon the occurrence of the epileptic paroxysms ; no appreciable alteration whatever in any part either of the brain or of the spinal cord. In other cases you may discover some organic disease within the head : a scrofulous tubercle, a spicu- lum of bone projecting from the skull. Have you then detected the cause of the disease I All that can be said is, that the piece of bone or the tubercle was probably a predisposing cause of that derangement of the nervous substance which determined the parox)^sms ; the derangement itself, if, indeed, it was of such a nature as to be cognizable by our senses, has gone, with the symptoms ; the tuber- cle or bone having in the meantime remained, without any sign which could betray its presence. M. Foville, whose testimony in this matter is entitled to much weight, affirms that ifi persons who have been subject to epilepsy, uncomplicated as yet with any permanent disorder of the intelleci, or of the faculty of voluntary motion, and who have died in the Jit, constant alterations are observable within the head; viz., a strong injection of the vessels of the encephalon. The membranes, the brain, and the cerebellum, are gorged, he asserts, with Hvid blood. But he goes on to say that thi i is to je ascribed to the mode of death : that we see the same appearances in persons who have died by hanging, or any form of apnoea ; that they are not pecu- liar to epileps}', and do not explain the attack, but only point out the way in which it has been fatal. It is, I fancy, a very common notion, both that such congestion does take place, and that it is the cause of the paroxysm : and it may be worth while shortly to state the reasons which are opposed to the conclusion, that the congestion (granting for the moment that it does happen) is a sufficient explanation of the attack. In the first place it is not easy to conceive that the congestion could so suddenly arise and subside again, as it must sometimes do, if it be the immediate determining cause of the fit : within the space of a single minute, for example. And in the second place, the signs of external congestion and plethora, by which signs we measure the amount of the internal, are most marked just when the symp- toms of the paroxysm begin to subside and disappear. So that we cannot, I think, look upon the congestion as the cause of the convulsive symptoms. Ijet us go a step further, and inquire into the state of the encephalon in those EPILEPSY. • 387 persons who, having suffered epilepsy, had, before death arrived, been affected with some permanent impairment of the mental functions, or (what often goes along with such impairment) with some degree or other of muscular paralysis or debility. The most common alterations met with in the brain in such cases are the following. Induration of the white matter of the brain, which presents a dull appearance ; sometimes, besides the hardening, a general injection of the white matter ; and in the majority of cases a marked dilatation of the blood-vessels. In some instances tbe consistence of the white matter is diminished ; it is soft and flabby ; but there is the same dilatation of the blood-vessels. These changes pervade the whole of the white matter in every part of the brain. At the same time the gray matter is found irre- gular on its surface, marbled or of a rosy colour in its substance, and sometimeo altered in consistence. And in many cases the membranes are found to be adherent in some parts to the convolutions with which they he in contact. Such are the results of the experience of careful observers in respect to the morbid anatomy of epilepsy; of Morgagni, of Foville, and of MM. Bouchet and Casauvielh. The changes last described are such as are produced by chronic inflam- mation of the brain and its membranes. They are the consequences (I imagine) of repeated paroxysms of epilepsy ; they are the very same as are frequently met with in cases of insanity complicated with paralysis, and they elucidate, therefore, the connection of these affections ; but they certainly teach us little or nothing of that actual condition of the nervous mass upon which the epileptic paroxysms de- pend. And, in truth, to expect to find in the brain the traces of convulsions that have passed away, would be as unreasonable as to expect to find the traces of former voluntary movements. Of those organic changes which may be regarded as strong predisposing causes of the paroxysms, my own experience accords with that of Dr. Bright ; who states, that they are more frequently such as affect the surface, than the deeper-seated parts of the brain : tumours external to the cerebral matter ; alterations in the bones of the skull ; or in the membranes that envelop the organ. Various altered states of the spinal marrow have also been recorded. But besides the morbid appearances that are sometimes only visible in the nervous centres themselves, there are others, which it is of great importance to attend to, situ- ated in other parts of the body, and at a distance from those centres : diseased states of the liver; biliary concretion; granular kidneys; renal calculi; stones in the bladder ; worms in the alimentary canal ; diseases of the uterus ; and of various oiher parts. And these morbid conditions have often, no doubt, an intimate connec- tion with the epileptic paroxysms. Accordingly, some authors make almost as many varieties of epilepsy as there are organs of the body ; they specify the cerebral, the spinal, the cardiac, hepatic, gastric, intestinal, nephritic, genital, uterine, and so on. It will be sufficient, however, to consider two species only ; that, namely, in which the disease originates in the nervous centres themselves, and especially in the brain; and that in which it originates in some other part. Most persons who have written on epilepsy make this distinction, although they employ different terms to express it. Cerebral and occasional ; primary and secondary; idiopathic and sympathetic ; cen- tric and eccentric. The last two terms are the best. But let us clearly understand them. The disease may, in one sense, be considered eccentric, even when it is situ- ated in the brain ; eccentric, i. e., in respect to the true spinal marrow. But I ap[)ly the epithet centric to epilepsy when its cause lies in either of the two great nervous centres; the brain, or the cranio-spinal axis. The distinction itself we shall find to be an important one, both as regards the prognosis and the treatment. But I must first say a few words respecting the causes and the diagnosis of epilepsy. There is no doubt that a tendency to epileptic disease is frequently hereditary. It may be derived from parent to child ; or it may skip over a generation or two, and appear in the grandchild or great-grandchild; or it may be traceable only in the col lateral branches of the ancestors. This is just what takes place in other hereditary 388 EPILEPSY. maladies. You may often notice also that other forms of nervous disorder prevail in the same families. MM. Bouchet and Casauvielh found that among 110 instances of epilepsy, 31 were hereditary. Of 321 persons afflicted with epileptic insanity, and seen by Esquirol, 105 were descended from insane or epileptic parent^. Again, a tendency to epilepsy is very often found to go along with an tinnatttra' form of the head, which is pinched up hke a sugar-loaf; or misshapen and unsym metrical, one-half being unlike the other ; or oddly configurated in some way ot other. Epilepsy is no uncommon attendant of chronic hydrocephalus. And thirdly, the scrofulous diathesis is a strong predisposing cause of epilepsy Dr. Cheyne even holds that epilepsy is as certain a manifestation of the strumou:; disposition, as tubercular consumption, or psoas abscess. Now of the two predis- posing circumstances last mentioned, it may be observed, that they commonly merge in that which preceded them : the strumous diathesis, and a particular con • formation of the he^d, are both very likely to descend from parents to their progeny Whether the sex has any influence in determining a predisposition to epilepsy, it a question that remains to be settled. Foville thinks it is most common in females . Dr. EUiotson in males. I have certainly seen more epileptic boys and men, than girls and women. But the casual experience of a single observer is not enough tc determine the point. We want numerical statements on a large scale. At the close of the year IS 13 there were 102 male epileptics in the Bicetre ; 289 female cases in the Salpetriere Jos. Frank observed that of 75 patients, 40 were females. LECTURE XXXVI. Epilepsy, continued. Recapitulation. Exciting causes. Simidafed epilepsy. Diagnosis. Prognosis. Treatment: during the Jit ^ during the intervals } during the warnings. At our last meeting I began to speak of epilepsy. Let me rapidly retrace the ground we then passed over. An epileptic seizure may be very severe ; or very slight. The very severe attack* are characterized by a sudden cry, immediate loss of consciousness, general and vio lent convulsions, and subsequent coma or heavy sleep. The very slight attacks consist in a momentary abeyance of the mental faculties, sometimes with and some- times without shght and partial convulsion. The extreme forms of epilepsy we judge to differ only in degree, inasmuch as they both attack the same persons at difftirent times ; or the one form conducts to the other. Betweep these the gradations are innumerable. We call the extremes the ejnhpticfit, and the epileptic vertigo ; the French name them the grand mcd and the petit mul. These fits may last from a few seconds to half an hour. Paroxysms apparently longer than this commonly consist of a succession of fits. The average duration is from five to ten minutes. The fits recur at variable intervals ; which are sometimes periodic, mostly irregular. There may be many in a single day : there may be only one for many years. They are commonly more severe in proportion as they are less frequent. The epileptic seizures sometimes begin in early infancy : another period at which they often commence is about the age of seven or eight : another period at fourteen or sixteen, or for some few years after that age. They more frequently begin before puberty than after it. Sometimes the first fit takes place in the middle period of life : sometimes even in declining age. They often occur in the night, espe- cially in the outset and the dechne of the disease ; usually when the patient if between asleep and awake ; i. e., at the commencement or the termination of his slumber. In the majority, perhaps, of cases, the fit is unexpected, and preceded by no EPILEPSY. 389 warning. But in other instances there is some alteration perceptible by the patient himself, or by his friends, sjiving notice of its approach ; some change in the temper, feeHngs, appearance ; some disturbance of the senses ; ocular spectra ; or what is called the epileptic aura, a creeping sensation arising in some part of the surface, generally of the extremities, and gliding towards the head. Some of these warnings precede the paroxysm by a day or two, or by a few hours ; some by two or three seconds only. Sometimes the blow is threatened by their appearance, but it does not fall. The fit is almost always, in its severer forms, attended and followed by coma ; sometimes, after the coma, by temporary confusion of mind ; deafness ; slight para- jysis ; delirium ; inarticulate speech. There is seldom any appreciable permanent 'damage effected by a single fit. A repetition of the fits leads, in a large majority of instances, first, to a defect of the memory, and of the general intelligence ; and at length to a peculiar expression of countenance, to decided imbecihty of mind, to complete fatuity ; and with this there is often associated some paralysis or muscular debihty. The convulsions take place, necessarily, through the medium of the spinal cord and nerves — just as voluntary movements do; but the suspension of sensation, thought, and volition (which suspension is seldom absent, while the irregular mus- cular action often is wanting) shows that the brain is essentially involved in the disease. Accidental organic lesions are sometimes (and sometimes only) found in the ence- phalon, or in the spinal cord, of persons who have suffered epilepsy uncomplicated with any permanent mental or paralytic affection ; tubercles, for example, or bony groyvths from the interior of the skull : but as these are constant, while the paroxysms are occasional, and as in the intervals they give no signal of their presence, we can only regard them as being probably predisposing causes of the seizures. When the epilepsy has been complicated with permanent alienation of mind, or with some degree of paralysis, evidence of chronic inflammation of the brain and its membranes is generally discovered. This has been the consequence of the repetition of the paroxysms. This explains the frequent connection of fatuity and palsy with epilepsy of long standing. The diseased condition which excites the paroxysms may be situated in the nervous centres themselves, or in some other part of the body. In the one case we call the disorder centric, or idiopathic ; in the other, eccentric, or sympathetic. We cannot always be sure with which species of the disease, the centric, or the eccentric, we have to deal : but the distinction, when it can be made, is of considerable importance, in respect to the prognosis, and in respect to the management of the case. The predisposition to this fearful complaint is often hereditary. Malformation, or defect of symmetry in the two sides of the head, is a frequent predisposing cause. So, pre-eminently, is the scrofulous diathesis. And these two, viz., the scrofulous diathesis, and a peculiar conformation of the head, are both liable and hkely to be propagated from parents to children. But the predisposition is found to be here ditary, even when the shape and structure of the body is, to all appearance, quite perfect and natural ; and when no outward indication of the strumous diathesis if perceptible. [The following statistics are presented by M. Leiiret, in an interesting paper on Epilepsy in the Archives Ge.ntrales for May, 1843. Among 106 epileptics, in 24, or nearly one-fourth, the disease commenced between the tenth and fourteenth years of their age ; in 18, or nearly one-sixth, between the fifteenth and nineteenth years, and in 16, between the fourteenth and twcnty-fonrth years. Thus 58 patients, or more than one-half, were first attacked between their fourteenth and twenty-fourth years, Of the whole number of cases, in six only vvas it ascertained that the disease existed in one or other parent, and in but eight was it found that one of the parents had died of any disease of the brain, namely, tliree of insanity, two of apoplexy, one of paralysis, one of siucide, and one of meningo-cephalitis. Of the 106 patients, thirty had been drunkards, twenty-four masturbaters, and fifteen addicted to women. In fifteen cases, the actual or presumed cause of the first attack of epilepsy was ascribed ti terror; in twelve to onanism ; in six to drunkenness ; in two to anger; in two to distress ; ib two to fa'ls : in one to libertinage, S(c. Thirty cf the patients hal an attack \fry r-guiai'v 2h3 390 EPILEPSY. once a fortnigh; ; 17 suffered attacks once a month; 13 once a week; 9 every three or foui daj's ; 4 almos-; every day; 2 every day; 1 every two months; 3 every three months; and 24 at very irre^lar intervals. In 35, the attacks took place in the night especially ; in 29, they were as frequent in the day as in the night; in 12, they frequently opcurred in th*e day ; in 8, they occurred during the day only; in S, during the night only; in 3, in the morning only; in 3 others generally in the morning; and in 4, in the evening only. — C] At the very close of the lecture I informed you that it is an unsettled question — and it is not a question of very great importance — whether the disease is more common in females or males : whether the sex has any thing to do with the pre- disposition. There are certain vices which are justly considered as influential in aggravating and even in creating a disposition to epilepsy; debauchery of all kinds; the ha- bitual indulgence in intoxicating liquors ; and, above all, the most powerful predis- posing cause of any, not congenital, is masturbation — a vice which it is painful and difficult even to allude to in this manner, and still more difficult to make the subject of inquiry with a patient. But there is too much reason to be certain that many cases of epilepsy owe their origin to this wretched and degrading habit : and more than one or two patients have voluntarily confessed to me their conviction that they had thus brought upon themselves epileptic paroxj^sms for which they sought my advice. Among the exciting causes of epilepsy, fright is conspicuous. And any strong mental emotion is apt to produce the fit in a person who is already subject to the disease. This fac* alone would be enough, I conceive, to forbid our ascribing the paroxysms exclusi\ely to an affection of the spinal cord. Bodily pain ; manifest and {Treat disturbance of almost any of the principal functions of the body, may act also as exciting causes. Sometimes the cause is obvious ; sometimes it is quite inscru- table. If the attack occurs every night. Dr. Bright thinks it may be attributed to the "congestion" of sleep : if it takes place at monthly intervals in women, we may " often trace it to nervous irritation in sympathy with the uterus : and when long periods h^ve intervened we may usually trace each distant paroxysm to the repe- tition of some excess, or to a neglected state of the bowels." In these latter cases the epilepsy is of the sympathetic or eccentric kind ; the irritation being seated in some part at a distance from the nervous masses in the stomach, or intestines, oi uterus. Now I would suggest the expediency of observing what muscles or sets of muscles are Jirst affected by the spasm in such cases, and in what part the warning aura (if there be any) arises : because by accurately noting these parti- culars, we may, perhaps, be led to a knowledge of the part or organ in which the irritation operates ; and if we know the seat of the irritation, we shall be more likely to know its nature and its cure. [M. Lamonthe relates, in the Journ. de Med. de JBourdeattx, a case in which the ejjilepsy was caused by a foreign body in the ear, and ceased upon its removal. The patient was a man thirty years of age, in whose external meatus a pebble had been accidentally introduced. He at first experienced only a slight diminution of hearing ; afterwards suppuration occurred, and finally epileptic attacks supervened ; from which he had suffered for two years before he consulted M. Lamothe. This gentleman, being informed of the probable existence of a foreign body in the ear, made an examination, and detecting it, by proper means, sue ceeded in removing from the meatus a rough pebble of nearly a triangular shape, and from that period the patient had no more attacks of epilepsy. In the same Journal, another case of the same kind is related by M. Roussilhe. — C] Among the exciting causes of epileptic fits are also enumerated — and I beheve, from what I have myself noticed, with great justice — the repulsion of eruptions, and especially of eruptions about the head, when proper artificial evacuations are not obtained at the same time ; the cessation of habitual discharges ; and, on the other hand, profuse and unusual discharges. Hemorrhage certainly will often bring oa convulsions and a state of insensibility exactly like certain forms of epilepsy. Per- sons who are bled till they actually faint, are often at the same time convulsed. And animals that are killed by loss of blood are always afTected, with convulsions before they expire. There is yet another very singular occasional cause of epilepsy that deserves to EPILEPSY. ' 391 be mentioned, viz., the sight of a person in a fit of that disease. This has been noticed over and over again. Not only will a patient who has already suffered such attacks, often fall into one upon seeing another so afTecled ; but people will even sometimes do so who have never before shown any symptom of epilepsy. In this way the disease will now and then run through a boarding-school: or through a ward in an hospital. There is a very good example of this recorded in the 11th volume of the Medical Gazette, by Dr. Hardy, of Bath. A strong, healthy young man was hired to take care of an older patient, who sufTered frequent and exceed- ingly violent paroxysms of epilepsy. He remained with the patient night and day ; and at the end of seven weeks became himself epileptic in a very high degree. An acquaintance of his, of equally robust make, but some years older, occasionally visited the parties. In a fortnight from his first visit he also was seized with simi- larly violent attacks. Dr. Hardy quotes the following short case, also, from Baglivi : — " Vidimus, anno IGOO, in Dalmatia juvenum gravissimis correptum convulsionibus, propterea quod inspexerat solummodo ahum juvenem dum epilepsia humi contor- quebatur." [M. iNIeyer has recently given an account of a mimber of the pupils in a female school that were attacked with epilepsy, in consequence of seeing one of their number under the influ- ence of the disease. Most of the subjects were approaching the period of puberty ; whilst they were all of a highly excitable temperament. — C] Dr. Cullen, w'ho, as well as many others, had noticed the same things, starts the question whether this mode of propagation of the disease be imputable to dread and horror; or the mere force of imitation, which is often so strong, in health as well as in disease : and he decide* in favour of the force af imitation. In fact there are many other signs equally horrifying with that of a person in convulsions ; yet there is no spectacle of horror so efficacious in producing a fit of epilepsy in others, as that of a person suffering under epilepsy. This principle of imitation holds good in many of the spasmodic diseases: and in sume of them, especially in hysteria, its influence is more remarkably seen than in epilepsy : I shall therefore have to recur to it again. There is one very curious fact, however, which relates to epilepsy in particular. You are aware that this disease is often feigned, by impostors. Now I believe it is ascertained, beyond the possibility of doubt, that fits and actions which were at first, in these pretenders, strictly voluntary, have at length become involuntary and uncontrollable, and have passed into paroxysms of real epilepsy. The rogue is caught in his own trap. And the mention of these impostors leads me to consider the diagnosis of epilepsy. First, how are we to distinguish the feigned disease from the true ? Secondly, are there any other real diseases which may be mistaken for epilepsy, or for which epilepsy may be mistaken? In the number o{ feigned diseases epilepsy is one of the most common. Soldiers and sailors pretend to have epileptic fits, in the hope of obtaining their discharge from the service. Cases of simulated epilepsy occur also continually in our streets among mendicants and impostors, who think to excite the compassion and pecuniary charity of the credulous ; and are even sometimes actuated I believe by a desire to obtain admission into hospitals, where they five tolerably well, and quite idly. It is easy enough, they think, to throw their legs and arms about, and to grin ; and many of them get up a capital show of foaming at the mouth, by placing a bit of soap between the gums and cheek. The means of detecting these vagabonds are of some importance to us all ; and it is more particularly necessary that they shoul(# be well known to those who are likely to join the medical department of our fleets or armies. It is of course desirable, in questionable cases, to witness a fit. But pretenderf are not very willing to perform when they know that a medical man is looking on You may sometimes convict them, in the absence of the fits; as cross-examination, A cheat will seldom be consistent in the account which he gives of his fits ; as lo whether they are regular or irregular ; and as to the times and places in which he has sufllered them. An impostor chooses such situations for his exhibition as are most suitable to his own purposes ; a crowded street, or a well-frequented public 392 EPILEPSY. walk. True epileptics almost always select retired places to take exercise in ; espe- cially if they have any warning or expectation of the approach of a paroxysm. You will find also that the impostor is not attacked at his own home ; but always fixes upon some spot in which he is not only sure to be seen by others, but in which he is not likely to sustain any injury by tumbhng down. True epileptics are often seriously hurt by their falls ; feigned ones generally come ofT without much bodily damage. However, if the fits are alleged to be frequent, and if also they are reorular, you may soon expect one, and must make a point of being present : and then you will seldom fail to remove or to verify your suspicions. In the first place the mus- cular power of epileptics is far beyond what is natural. It will sometimes take four or five stout men to hold a weak emaciated lad, in a fit of epilepsy. Of course no impostor can command more than his natural strength. In the second place a real epileptic fit, if it lasts long, is seldom violent ; whereas impostors, for obvious reasons, make their fits both long and violent. You may often get much information from the state of the eyes, which usually in true epilepsy are partly open, with the eye- ball visibly rolling and distorted. In feigned epilepsy the actor almost always prefers to shut his eyes completely. Sometimes, if he be closely w^atched, and no suspicion is expressed, he will be seen to open his eyes occasionally, to ascertain the effect of his exhibition upon the bj^standers. In real epilepsy, too, the pupils are often con siderably dilated, and do not contract when stimulated by light. This is a very sure criterion ; for no impostor can prevent his iris from acting on exposure to vivid fight. The pulse, in true epilepsy, is not only frequent but often irregular also ; a circum- stance which can never be imitated. The skin of an epileptic, during the fit, is commonly cold ; but that of an exhibitor is hot, and covered with sweat, obviously the consequence of his violent and voluntary exertions. In this respect, also, it ia scarcel}' possible for him to deceive us. Again, an impostor will not bite his tongue, as epileptics often do ; nor very willingly void (Hke them) his excrements and urine during the fit; indeed, it would not be very easy for him to do so, and at the same time to carry on the necessary pretence of convulsions. Besides, epileptics, during a fit, are quite insensible to external impressions ; and hence the vulgar modes of detection, though harsh and not to be recommended, are often effectual ones ; such as dropping melted sealing-wax upon the patient; putting some gin into his eyes; burning him with a hot poker ; or (what I beheve is more fashionable among beadles and pohce constables, when they have to administer to such patients), the pressing your thumb nail violently under that of the supposed impostor. This causes exqui- site pain, yet inflicts no lasting or serious injury ; and I believe that few pretenders stand out against this expedient. It is astonishing, however, how much torture some of them will bear before they can be brought to confess their imposition. If we speak of having recourse to some of these painful tests in the hearing of the pre- tender, we shall find that the fit will soon come to an end. Dr. Cheyne mentions an instance in which one table was placed upon another, and a soldier, who was sup- posed to be shamming, was laid upon the upper one, while his paroxysm was on him ; and the fear of faUing from such a height soon stopped the convulsions. Mr. Hutchinson relates the case of a sailor who was suspected to be a cheat, in whom the convulsions were instantly removed by blowing some fine Scotch snuff' up his nostrils through a quill. This brought on another kind of fit, viz., a fit of sneezing, which lasted nearly half an hour ; and there was no return of the epilepsy so long as Mr. Hutchinson remained in that ship. He tried the same expedient in cases of real epilepsy, but never could produce any similar efTects, although the patients were not snuff'-takers. There was a beggar in Paris, who often fell into epileptic fits in the streets ; one day some compassionate spectators, fearing that he might injure himself in his struggles, got a truss of straw and placed him upon it : but when he was in the height of his paroxysm, and performing remarkably well, they sat fire to the straw ; and he presently took to his heels. There is another ingenious plan, very likely, I should think, to detect an impostor, and yet not calculated, like the one last mentioned, to injure a real sufferer: which s to propose gravely, in his hearing, to pour boiling water upon his legs, and then to proceed actually to pour cold watgr upon them. EPILEPSY. 393 « Of the real diseases which are apt to be confounded wiih epilepsy, hysteria is the chief. The question whether a given case be one of epilepsy or of hysteria, very often arises. By a careful attention to several circumstances, the discrimination is generally to be made. In the first place the total suspension of consciousness, which is so constant an accompaniment of the epileptic paroxysm, does not take place in the hysterical : in epilepsy there is no globus hystericus, no alternations of laughter and tears ; the solitary cry which ushers in the epileptic attack so frequently, and which is so characteristic, is not heard in hysteria ; not that hysterical girls do not scream, for they often do; but then it is repeatedly and continuously. The heavy comatose sleep that succeeds epilepsy is not common in hysteria. Hysterical patients contrive also to avoid hurting themselves by their contortions : they do not bite their tongues, nor foam at the mouth. Dr. M. Hall tells us that, in epilepsy, there is a forcible closure of the larynx, and expiratory efforts which suffuse the counte- nance, and probably congest the brain with venous blood. In hysteria the respira- tion, on the contrary, is rapid and sobbing. Observe that I have been speaking, all along, of what has been sometimes called habitual epilepsy. It is not every attack of convulsions with insensibility which ought to be so named. Such attacks are apt to follow sudden injuries done to the brain ; stunning blows on the head, fractures of the skull, the eruption of blood in anguineous apoplexy, and even overwhelming emotions of the mind. The reten- tion of urea in the unpurified blood, occurring in connection with a peculiar renal disease to be hereafter described, appears to be a frequent cause of similar seizures. With these casual occurrences of epileptiform convulsion I do not here meddle. Epilepsy is one of those complaints concerning the probable issue of which the patient, and still more the patient's friends, are sure to make repeated and anxious inquiries. It is seldom that we can pronounce with any confidence a favourable prognosis ; but there are some cases in which the prospect is much worse than in others. If we have reason to believe that the disease is centric, and connected with any organic derangement of the nervous centres themselves, the prognosis must be bad. Cseieris paribus it is rendered worse by the coexistence of any sign of scrofulous disease, or of the well-known bodily characteristics of the scrofulous diathesis : it is rendered worse, also, when the disease has happened in the parents or among the more immediate ancestors of the patient ; whenever, in short, there is reason to think the disposition to it is inherited. The prognosis is bad when the complaint occurs in persons who have slanting foreheads and misshapen skulls : and when the epi- leptic physiognomy has become established. The prognosis is always the more unfavourable the longer. the disorder has lasted; the oftener the fits have been repeated ; and the more habitual they have become. And when the memory is permanently enfeebled, or fatuity has come on, or the disease is complicated with any form or degree of paralysis, the case is hopeless ; so far, at least, as a perfect cure is concerned. On the other hand, the prognosis is better when the disease is eccentric: i. c, when there is any obvious exciting cause of the paroxysms, manifest in structural or functional disorder of some part of the body other than the nervous matter. And when this eccentric cause is removable — a stone in the bladder, for instance, worms in the intestines — then the prognosis still further improves. On this account the prognosis is better in children than in older persons, for the exciting cause is often clearly eccentric, and likely to be transitory ; the irritation of teething, for example : and besides this, it is staled by many practical writers that even repeated and habitual attacks of epilepsy in children often go off" as the patients grow older ; and especially at the age of puberty. The experience of Heberden, however, was against this. He says that he had known several persons become epileptic at that time ; but that he had never met with one who had then got rid of the disease. He had seen a few who had recovered before, and some after, the age of puberty. Dr. EUiotson mentions a case in which a girl had epilepsy prior to the first period of menstrua- tion : then the fits stopped ; and she remained free from them until in advanced life the catamenia ceased to recur ; and then the epilepsy returned. In all those cases 394 EPILEPSY. in which we can assign some evident cause for the fit — such as the use of improper food, uterine irritation, mental emotion, and so on— the prognosis is somewhat better than usual. [In the predisposed, one of the most frequent causes by which the paroxysm is brought on, is errors in diet, either in regard to the quality or quantity of the food taken. We have known cases in which the patients remained free from an attack so long as they abstained from a particular article of food, but invariably experienced one on partaking of it. — C] " The eccentric epilepsy (says Dr. Hall) is to be viewed as curable, however difficult of cure." And however unfavourable the prognosis may be, there is nothing that can excuse any apathy or neglect on the part of the practitioner. Though few cases of habitual epilepsy admit of a cifre under any treatment, yet there are few which may not be relieved by treatment, so far as regards the frequency or the vio- lence of the fits, or both. The treatment of epileps}^ resolves itself into the measures to be adopted during the fit ; and the measures to be adopted during the intervals between the fits. In the paroxysm itself we have to provide against the risk of injury from the struggles and contortions of the patient ; and if possible, to mitigate the violence, and to shorten the duration of the fit. The patient should be placed in the centre of a large bed ; his neckcloth, and any ligatures about his person, should be loosened ; his head should be somewhat elevated. When the risk of his hurting himself can- not be avoided in any other way, his limbs should be restrained by the bystanders, or secured in a waistcoat. Some persons have advised that a piece of cork or soft wood should be placed between his teeth, to prevent him from biting his tongue, or breaking his teeth. But it is not easy to manage this expedient cleverly. If the head be visibly congested, and hot, cold wet cloths may be applied to it with pro- priety ; and if, at the same time, the extremities be cold, means of restoring warmth to them should be adopted. I do not know whether art can abbreviate the paroxysm. Some years ago the late Barry O'Meara sent a letter to one of the newspapers, saying that he fancied he had seen a popular remedy useful in such cases; that, namely, of cramming salt into the patient's mouth : he thought he had succeeded in bringing the patient about by that expedient. In the epileptic patients that come into hospitals, the physician, not being always on the spot, does not see all, nor even many of the paroxysnis ; but after reading that letter, I desired the nurses to treat all my patients who might ba seized with epilepsy in the wards upon that plan : and on comparing the length of the paroxysms when the salt was used, with their ordinary duration as reported by the friends of the patient, or as previously observed in the hospital during some of the earlier fits, it certainly did seem to curtail the convulsions. Probably it is more calculated to relieve an hysterical than an epileptic fit. In the epileptic fits of chil- dren much benefit often results from immersing them in warm water: particularly if there be any coldness of the extremities. It is very much the fashion to bleed persons who are seen in a fit, of whatever kind ; and to bleed them largely. I have already given you my opinion respecting the indiscriminate use of this decided measure in apoplectic attacks. If it be clear, from the phenomena, or from the known history of the patient, that the case is one of epilepsy, bleeding, during the Jit, will seldom be necessary or proper; unless, indeed, the evidence of cerebral plethora is very strongly marked : and even then I would advise you not to do more than take a moderate quantity of blood, by cup- ping, from the neck or temples. The convulsions and the sopor may be expected soon to pass off; as soon, probably, and as completely without, as with, any abstrac- tion of blood. Whereas the difference of the alternative is not trifling, in respect to the condition in which the patient will be left when the fit is over. The injurious efltct of excessive blood-letting upon the system at large, is manifest, sometimes, foi months afterwards. During the intervals between the attacks we seek to prevent their recurrence ; and this end is to be attained, when it is attainable at all, by getting rid of the pre- disposition to the disease on the one hand, and by protecting the patient against its exciting causes on the other. Now there are certain kinds and causes of predispo- EPILEPSY. 395 silion which we cannot get riJ of; such are the tendency that is inherited; the strumous diathesis; malformation of the head; the presence of some organic lesion in the brain or spinal cord. Vicious and dissolute habits are also di.licult, but not impossible to eradicate. It will be our duty, when such are discovered, to set strongly before the unhappy patient the dreadful end towards which he is hastening ; the certain loss of reason to which, when once the disease has shown itself, the continu- ance of his baneful indulgences will drive him ; and to urge upon him the necessity for a short and sudden turn on his part, if he would expect any aid from medicine. Where no physical cause of the proclivity exists, or can be detected, it is of much importance to ascertain whether there be any deviation from the standard condition of health ; towards general plethora in the one direction, or towards emptiness and asthenia in the other. The first of these unnatural states may be redressed by regi- men and exercise, by abstinence from stimulating food and drink ; by a slender diet also ; and, if need be, by direct depletion. The second, which, perhaps, is the most common of the two, and which often leads (as I have explained before) to local ple- thora, may be removed or lessened by a tonic treatment. The object in both cases is to give stability and firmness to the nervous system ; to diminish that mobility, or readiness to be impressed, which is so strong a characteristic of the class of patients affected with epilepsy, although it may not be very apparent in some "ew individuals among them. It is upon this principle that mineral tonics sometimes do good in epilepsy, and not by any specific virtue which they possess in restraining the fiti. It is owing, perhaps, to a neglect of these two somewhat opposite conditions of general plethora and general debility, or to the difficulty which sometimes is met with in distinguishing them, that such a variety of opinions have been expressed concerning the proper treatment of habitual epilepsy. Plethora is to be reduced without causing hurtful debility: tone is to be given without inducing dangerous fullness. It requires some nicety to carry the balance even ; to attain the hoped-for good, and at the same time to avoid the evil that is apt to wait upon it. In very many cases the requisite extent and measure of the tonic plan on the one hand, or of the lowering system on the other, can only be learned by careful trials. But sometimes the indications of treatment are more plain. When the patient is young and strong, and full of blood, and not of a particularly movable temperament; when he has a hard pulse, or any degree of feverishness ; when the disorder has super- A'ened upon the suspension of some customary discharge, so that there is an obvious cause of plethora; and when the disease is in its early stage, and the recurrence of the fits has not yet been established by habit; in any or all of these circumstances it will often be proper to abstract blood from the patient, and it will always be right to purge him actively, and to insist upon an abstinent regimen. When former pa- roxysms have been preceded by signs of fullness of the vessels of the head — by headache, for instance, throbbing of the temporal arteries, distension of the superfi- cial veins, a flushed or loaded countenance — you may sometimes, by a timely use of the lancet or the cupping-glass, avert an attack that was apparently impending. On the other hand, if the patient is pale and weak; or unduly susceptible; or if his malady has been fastened upon him through many repetitions of the fit ; you will generally find that any form of active depletion is injurious, and learn to place your best hope in measures which are calculated to invigorate the frame. One of the most useful of the particular remedies employed for strengthening the body, is the cold shower-bath. This tends more, perhaps, than any single measure, to give permanent firmness and steadiness to the system. The best test, in all cases, of the tonic and bracing effl'ct of this remedy is the occtn-rence of a pleasant and general glow after each application of it. It is the only safe mode in which the cold bath can be used by an epileptic person. You will find, in books, a great many tonic medicines recommended for this dis- ease, which medicines you will have opportunity and ample time for trying. Of the mineral tonics, the salts of silver, zinc, copper, and iron, have been chiefly praised. The nitrate of silver used to be highly thought of; but there is one very serious objection to it which must never be forgotten : viz., that it is apt to produce a perma- nent discoloration of the skin, a frightful lead-colour. There is a footman in ii house 396 EPILEPSY. near Cavendish Square who has been thus blackened : and there is a gentleman of property resident at Brighton in the same predicament ; his face looks as if it had been thoroughly and carefully pencilled over with plumbago. A barrister, a frienc. of my own, had a narrow escape from a similar misfortune : in fact his skin haa acquired a just perceptible tinge of gray. Now if the remedy were sure to cure the disease, I am not certain that every one Avould accept of a curs on such terms. It would be proper, even on that supposition, to tell the patient that though he (or, a fortiori, she) would get rid of the epilepsy, there was a likelihood that this unamia- ble complexion might ensue. But the truth is, that in giving this nitrate of silver we run a great risk of obtaining its disfiguring effect, for the sake of a very small chance of curing the epilepsy. I have been assured, by one of his friends, that the Brighton gentleman has carried a dark outside for a quarter of a century at least ; and that he is as subject to epileptic fits now* as ever he was. If the lunar caustic is to do good, it must be given for some time together, and the probability is that it will not do good even then ; and if it be given for some time together, there is great danger of its changing the colour of the skin. For these reasons I never give it myself, and therefore I cannot recommend it to you. If j^ou wish to try it, or if you have a patient who insists on trying it, as some will, you may begin with half a grain in a pill three times a day ; and the dose has sometimes been carried as high as fifteen grains. And it is worth observing that in the larger doses this drug proves purgative. It is possible that its good efTect, when it has any, may be attributable to its operation in that way. There is no danger of spoiling the beauty of your patient by administering the oxide or the sulphate of zinc ; or the cuprum ammoniatum. The liquor arsenicalis has been thought useful ; but it requires to be exhibited with great caution. Of all the metallic remedies I should prefer some preparation of iron. I think I have seen much good done by the vinum ferri ; not by any specific agency, however, but by its giving what is called tone to the nervous system, and rendering it less prone to be affected by the slighter exciting causes of the disease. I cannot pretend to weigh the merits of the long list of substances which have been lauded as efficacious in keeping off and curing the disease ; and which, when they have been useful at all, have operated, I conclude, in diminishing the disposition to epilepsy by corro- borating the nervous system. The most renowned of them are valerian, assafetida, wormwo(xl, the misletoe of the oak, the cardamine pratensis, rue, the sedum acre, indigo ; narcotic vegetable preparations, stramonium, belladonna, hemlock, lettuce ; animal substances, musk, castor, ox-gall; and the number might be many times multiplied : and this long array of drugs, all of which have been known, or sup- posed, to accomplish a cure, affords, in truth, one of the strongest evidences of the intractability of the disease under any plan of treatment. There is a shrewd remark of Esquirol's which I believe to be quite true, however difficult it may be to account for the fact, which is, that epileptics are apt to improve for a time under every new plan of treatment. Whatever drug you may see reason to prefer (and the patients will have drugs, Mid you must be prepared to ring the changes upon them), there are certain other points in the management of the disease which are of considerable importance. The patient who is subject to epilepsy should live bj^ rule, and be temperate in all things. His diet should be simple, nutritious, but not stimulating : he should renounce all strong liquor, and become, in the new-fangled and vulgar phrase, a tee-totaller. He Ehouid rise early, and take regular exercise in the open air; keeping his head cool, find his extremities warm. He should avoid all menial excitement, and the fatiguing pursuit of what is called pleasure: all probable sources of sudden anger, surprise, alarm, or deep emotion of any kind ; all striving and contention of the intellect. The student, of whatever age and sort, in whom epilepsy has declared itself, should shut his books: the man of business abandon or abridge his professional toil: at least ihej^ must be instructed to abstain habitually in their respective callings, from such applications as would task and strain their powers, whether mental or bodily: and endeavours should be made to engage their thoughts and to interest their minds in <;ss engrossing objects of attention. No minute rules can be laid down on these EPILEPSY. 397 points, but, keeping the general indication in view, it will seldom be difficult to foDow it up in practice. When the fits appear to have been brought on by a species of moral contagion, or by imitation of the same disease seen in others, care should be taken to exclude as much as possible those objects or trains of thought which produce the mental emotion or the morbid propensity. In these cases, and, indeed, I may say in almost afl cases, it is more rational to expect benefit from such measures as tend to calm the mind and to fortify the nerves, than from this or that substance thrown at random into the stomach. There is cause for suspecting that epileptic fits sometimes depend upon a syphi jitic affection of the bones of the ^kull ; I am much mistaken if I have not seen such cases. When that suspicion arises, it will be proper to give mercury a full and fair trial. Such a plan has been followed by success. I should always premise, how- ever, in such cases, the iodide of potassium; the efficacy of which in dispersing syphilitic nodes is no longer doubtful. I am accustomed to recommend a gentle and long-continued course of mercury whenever organic disease of the brain is sus- pected ; the irifluence of that remedy being carefully watched. It will be right and proper also to try the effect of counter-irritation ; of blisters, a seton in the neck, or the tartar-emetic ointment. But I must confess to you that, often as this expedient is employed, I have seldom witnessed any such resuk from it as would encourage me to expect benefit from repeating it in another case. There is one form of counter- irritation which I have never seen put to the test, but which has of late been strongly recommended by a very able and observing physician. Dr. Pritchard ; and of which I have heard very good accounts from a gentleman who had seen it extensively employed in Bristol ; I mean the making a long issue in the head itself, dividing the integuments down to the bone by means of a scalpel in the direction of the sagittal suture, and keeping the incision open and discharging for some time, by means of issue peas. The formation of the issue is said to be not so painful as one might suppose. Dr. Gluain, in his edition of Martinet'' s Pathology, relates the following case •■ " Some years ago I saw a boy who was epileptic from infancy, and who, in one of his usual fits, fell over the chff by the sea-side, and received a very severe lacerated wound of the scalp, which healed slowly and with a copious suppuration. While the discharge continued he was free from any epileptic attack ; but as soon as the wound healed, the fits returned as before." Twice I have seen similar good effects from the insertion of a seton in the neck. Twenty times that measure has disappointed my hopes. When the disease is ascertained or believed to be of the eccentric kind, we must search diligently to find the seat of the distant irritation, in some disturbance of function ; and apply our remedies accordingly. The irritation may be found, as I have already intimated, in almost any organ of the body. Painful or irregular dentition is perhaps one of the commonest of the eccentric sources of epilepsy. Sometimes the attacks are attended with symptoms of disease in the liver ; shght yellowness of the skin, uneasiness and tenderness of the right hypochondrium, and lowness of spirits. In such a case we must rectify that state of the hver, by such means as I shall have to specify hereafter. If the disorder depends on a stone in the bladder, the cure must be committed to the surgeon. I have a patient at present under my occasional inspection, who from time to time has slight fits of epilepsy ; on most occasions he passes about the same time a small calculus by the urethra. I make no doubt that in his case the exciting cause of the epilepsy hes in the kidney. You will find that most persons, in respect to such diseases as that which we are now considering, have some favourite or usual mode of treatment ; and if I were called upon to name any single drug, from which, in ordinary cases of epilepsy, I should most hope for relief, I should say it was the oil of turpentine. And I find that other physicians have come to the same conclusion. Dr. Latham the elder was, I believe, the first person who made known its efficacy in this disorder. Foville states that he has seen excellent effects from it. It is highly spoken of by Dr. Per 2i S98 EPILEPSY. cival, in the Dublin Flospital Reports. It is not to be given in large doses, 3ut in smaller ones, frequently repeated ; from half a drachm to a drachm every six hours. You are aware that it sometimes produces strangury, and therefore the patient must be forewarned of this, or carefully watched. Occasionally turpentine has done (rood in virtue of its anthelmintic properties. I know that a physician of my acquaint- ance cured a case of epilepsy in this way, somewhat to his own surprise. Without having in his mind any notion of worms, he thought it "might be well to pur^e his patient, who had laboured under epilepsj^ for some time, with the oleum terebinthintc. The patient, who is the brother of a person holding at present a high office in this country, was residing two or three miles out of town. In the middle of the night the doctor was summoned to him in a great hurry ; the messenger said he was supposed to be dying. He was only intoxicated, however, by the free dose of turpentine he had swallowed : the next morning he voided into the close stool a large tape-worm ; and he has never had epilepsy since. A nobleman residing in Cambridgeshire was long epileptic ; and he too got rid of his epilepsy and of a worm at the same time. I believe that the cure was effected by turpentine in his case also ; but I am not certain of that. Such cases are remarkably interesting : they show that irritation of the stomach or intestines may be sufficient to cause the fits ; they illustrate excellently well the eccentric form of the disease ; and they deserve to be always borne in mind when we are asked to prescribe for an epileptic patient. A cure from so dreadful a complaint, by such simple means — the cause of his malady, and the certainty of his having got rid of that cause, being both so obvious and intelligible to the patient — ma3^ be enough, sometimes, to make a practitioner's fortune. But I think you will sometimes find the oil of turpentine very useful, even though it expels no worm, and when there is no worm to expel. If the bowels should be costive, the oil of turpen- tine and castor oil, in equal proportions, go exceedingly well together. When the patient has a distinct warning of an approaching paroxysm, can any- thing be done to ward it off'? Why, in some cases, b}' interrupting the precursory symptoms, it certainly may be prevented. A pupil of the class informs me that a brother of his, twelve or thirteen years old, has been subject to epileptic fits for two years. They occur in the night, especially if he is waked, even though the awaken- ing cause has no tendency to startle him. He often is dull and drowsy the evening before, and if he is roused from this lethargic state by conversation or amusements, the attack expected that night sometimes does not happen. Another student knows a young girl, in whom the occurrence of very high spirits is always precursory of the paroxysm ; when this extreme vivacity is moderated by those about her, the threatened fit is sometimes averted. I mentioned before an instance in which the aura, proceeding from one of the thumbs, was frequently checked by tying a hgature tightly round the thumb. Other examples of exactly the same kind are on record. Mr. Wardrop cured a case beginning with an aura in one finger, by amputating a joint of the finger. Dr. M. Hall states that the immediate accession of the parox- ysm may sometimes be prevented by dashing cold water on the face, or by exciting the nostiils by snuff". In this manner the disposition to closure of the larynx, and to expiratory efforts, is exchanged for sudden acts of inspiration. Another patient of my own, an old college friend, indeed, who is afflicted with epilepsy, feels convinced that he sometimes staves off a fit by applying smelling salts to his nose : and he always carries a bottle about with him for that purpose : but unfortunately the warn- ing (which consists chiefly in giddiness) is generally so short that he has not time to have recourse to his preventive before ne falls down. It is a question whether the fit may not be obv'iated by a strong mental effort in some cases. I make no doubt that it may, especially in th« imitative form of the disease, which originates in and depends upon mental and moral causes. It is scarcely necessary that I should do more than aavert generally to those pre- cautions which every one who is subject to epilepsy ought to observe, and which it is the business of his medical adviser to enforce, both upon the patient himself, »nd upon his friends. His bed should be large ; or if not large, it should be enclosed with some netting or other defence against his falling out of it. If he sleeps in a room by himself, care should be taken that in the winter a proper temperature ib CHOREA. 399 kept up, for if in his attacks he gets out of bed and on the floor he may be seriously- injured by the cold. He should not, however, be left alone if it can be helped. Guards should be placed over every grate near which the patient may come. He should avoid ascending and descending stairs as much as he can. He should not ride on horseback ; nor on the outside of a coach ; nor even in a gig ; nor go about especially in solitary places, without an attendant. A patient of Dr. Cheyne's, a young man of twenty, was drowned in his own garden by falling into a little runnel of water, which was not four inches deep. Neither, on the other hand, will it be proper or safe for him to frequent crowded or hot rooms ; or the streets of a popu- lous town, in which the multiplicity and distraction of objects are apt to produce, even in a healthy person who is not accustomed to them, a degree of vertigo and confusion. Dr. Cheyne advises that when the patient's circumstances will admit of his having a constant attendant with him, the latter should be provided with some diffusible stimulus ; a potion, for example, composed of camphor mixture and aether, by swalloAving which the impending paroxysm may sometimes be repelled. LECTURE XXXVII. Cliorea. Symptoms ; Pathology ; Complications ; Causes ; Treatment. Chronic Chorea. Other Nervous Disorders to which the same name has been applied. Another disease of a spasmodic kind, and essentially belonging to the nervous system, is Chorea^St. Vitus's dance. This is far less serious than the complaints which we have recently been considering; but it is a very unpleasant disorder to suffer, and it has several points of analogy with the other nervous and spasmodic ailments. Its prominent symptom is an irregular and involuntary clonic contraction of some of the voluntary muscles, which, however, are not wholly or constantly withdrawn from the government of the will. In tetanus we had a rigid spasm, while the mind was clear and free ; voHtion was unaffected, but the muscles which should have obeyed the effort of the will, were seized upon by some stronger over- ruling power. In epilepsy, with convulsive spasm, there was suspension of the mental functions : a temporary interruption of consciousness, and therefore of volition. But in chorea we have a different state from either of these. There is no loss of consciousness ; no defect of vohtion. The ordinary movements of the body can be performed in some degree, or sometimes, under the direction of the will ; but it would seem as if some other power wantonly interfered to excite them when they are not needed, to render them unsteady and imperfect, to arrest the natural action, and give a new direction to the limbs, and to cause the patient to gesticulate and grimace like a Merry-Andrew. Moreover, these apparently absurd movements do not occur in paroxysms, but continue throughout the day, sometimes for weelfs toge- ther ; but they generally cease during sleep : for the most part, but not always, the agitated limbs are still, while the senses are shut up in slumber. The complaint is not attended withyeyer. This disorder was first distinctly described by Sydenham, whose account of it is very graphic and excellent, and has been copied by most subsequent writers. With- out reference, however, to the portrait which he has left us, I will sketch the disease as it has occurred under my own observation. It usually begins with slight twitches of a few musles in the face, or in one of the extremities ; and by degrees the spas- modic action becomes more decided and more general. All the voluntary muscles are liable to be affected by it. Those of the face seldom escape. The features are twisted into all sorts of ridiculous forms ; you might suppose that the patient was what is called pulling a face, or making mouths at you : but there is neither mirth nor mockery in the contortion ; it is a convulsion. It is succeeded by a vacant look, and then it begins afresh. The disease occurs much oftener in young girls than in any other persons. If you ask the patient to put out her tongue, she makes sundry 400 CHOREA. attempts to do so before she can accomplish it ; and then the tongue is suddenly- thrust out, and as suddenly withdrawn, and the jaws snap together as if she were resolved that you should have as short a glimpse of it as possible. She writhes and contorts her shoulders. She cannot keep her hand or arm half a minute in the same position. When, at meals, she desires to carry her hand to her mouth, it is arrested midway, and suddenly pulled back again, or pushed off in some other direction ; and it is only after many deviations and fruitless efforts that she succeeds. The lower extremities are equally affected. When the patient intends to sit or stand still, her feet scrape and shuffle on the floor, or one is thrown over the other; and if she en- deavours to walk, her progress is most uncertain ; she halts and drags her leg rather than lifts it up, and advances in a jumping manner by fits and starts. In short, the voluntary muscles are moved in that capricious and fantastic way in which we might fancy they would be moved if some invisible mischievous being, some Puck or Robin Goodfellow, were behind the patient, and prompted the discordant gestures. With all this the articulation is impeded : there is the same perverse interference with some of the muscles concerned in the utterance of the voice. By a strong figure of speech, the disorder has been called " insanity of the muscles." Such is a picture of the main symptoms of this strange malady, as they have presented themselves to me ; and such, I venture to say, you will often see in your future practice. You will find, moreover, that the irregular jactitations are usually more marked and general on one side of the body than on the other : and sometimes they are confined to the muscles of one side. Here, therefore, we have a trait of resemblance to epilepsy and to hemiplegia. If you take hold of the only limb which happens to be thus agitated, and keep it still by main force, some other limb or part will take on the convulsive action. The persons who are subject to chorea are always inordinately sensitive, and what is popularly called "nervous." They are easily stirred up by new ideas and sudden feelings, and pass readily, and upon slight occasions, from one mood of mind to another. The mind is affected, as Dr. Cullen remarks, in the same way, and often shows the same varied, desultory, and causeless emotions, as in hysteria. You see the indication of this nervousness in the fact that the fidgety catching of the muscles increases when the patient is spoken to, especially by a stranger — by the physician, for example. The nurses of the hospital constantly tell me that such or such a patient, who has chorea, is much more composed at other times than she is during my visit, when she is surrounded by students, and made the object of their attention. In most cases the jactitations are partly and in some degree under the influence of the will. Sometimes the pa- tient seems to give way to them, indulges in or exaggerates them : at other times she can, by making an effort, control them. Many of the patients, especially such as are old and intelligent enough to understand the directions given them, and to make the trial fairly, can suspend for some seconds the convulsive movements, by taking a deep inspiration, and resting upon it, without expiring, for a little while. Like other spasmodic diseases occurring in movable constitutions, chorea is liable to be propagated also by a species of contagion, or rather of involuntary imitation. These diseases constantly approximate and touch each other in some of their characters. Chorea, in this its standard form, is essentially a disease of youth. Sydenham, and Cullen, who closely copies him, state that for the most part it attacks boys and girls, who have not reached the period of puberty ; between the tenth and fourteenth years of their age. These limits are, however, too scanty. It is very common between the eighth and sixteenth years ; it sometime comes on as early as five or six : and now and then it begins in adult life, or in old age. I have already intimated that it is much more frequent in girls than in boys. Dr. Heber- den says the proportion is as 3 to 1. Dr. Elliotson, out of 30 patients, had 22 females and 8 males. Of 84 cases reported by Dr. Reeves, of Norwich, 57 were females, and 27 males. Of 72 occurring in Dr. Manson's practice, at Notting- ham, 5J? were females, 19 males. Of 18 cases in the Hampshire County Hos- pital, 12 were girls, and the rest boys. Now taking all these numbers together, we hav? 204 cases, of which there were 144 females and 60 males ; the proper- CHOREA. 401 tion 13 as 12 : 5, or a little more than 2:1; and leaving out Dr. Reeves' list — which differs considerably from the others in containing a larger number of males — we have 129 cases, of which 87 were females, and 83 males ; this ratio is as 29 : 11 ; or nearly, but not quite, 3 : 1. [In 429 cases referred to by Dufossi and Rufz, 130 occurred in boys and 299 in girls. — C] I have also observed that the disease occurs much more frequently in children having dark hair and eyes, than in those of a light complexion ; and I think I have seen the same remark in some book, but I forget where. [According to Mr. W. H. Bell — (Did. des Etudes Mediralcs) Diifosse (ibid.), and Rufz {Ar- chives Generates de Med., iv. 239) — ihe subjects of chorea have chiefly light hair. — C] When the disease is strongly marked, or lasts long, there is usually some imbe- cility of mind manifested ; a slight degree of fatuity, and a foolish expression of the features. But this goes off with the other symptoms. The child generally recovers, but the malady is apt to recur, and that more than once. In this respect we may trace a distant resemblance to epilepsy ; if we regard each attack as a long and mild paroxysm, then these paroxysms are liable to repetition. No doubt the du- ration of the disorder is often abbreviated by proper treatment ; there are cures in this disease as well as recoveries. It is a very rare thing for chorea to prove fatal ; and the few fatal cases that have occurred have thrown no light on its pathology. Dr. Elliotson saw a strong girl affected with it die of apoplexy ; but perhaps she would have died of apoplexy whether she had had chorea or no. Chorea offers no protection against the invasion of other diseases. My colleague at the Middle- sex Hospital, Dr. Hawkins, had a fatal case. He found great vascularity of the uterus, earthy concretions in the pancreas, omentum, and mesentery, and tubercles in the lungs. But these conditions had no connection probably with the chorea. In an instance that proved fatal under Dr. Bright's observation, there was consider- able disease in the uterus and its appendages. I am afraid that we shall seek in vain in the dead body to discern the nature of chorea. When we find organic disease accompanying it, we must look upon such organic disease, if it have any connection with the chorea at all, as being a predisposing cause ; as producing or increasing that irritability and mobility of the nervous system which fit it for submitting to the exciting causes of various nervous diseases. There is a speculation of some of the French writers respecting the seat and nature of chorea so ingenious, that I cannot refrain from mentioning it. It is affirmed by certain modern physiologists, as you may perhaps know, that one of the functions, the principal office indeed, of the cerebellum, is to preside over and regulate the faculty of locomotion ; to keep the muscles in due subordi- nation, as it were, to the will. No voluntary movement, almost, can be executed without the combined and consenting action of many muscles ; it is the business of the cerebellum, they say, to maintain this consent and community of purpose ; to prevent any mutiny of individual muscles, and to make them unanimously co-ope- rate in producing a given movement. How far this doctrine is true I do not intend to inquire: but supposing it well founded, then they very ingeniously assign the cerebellum as the seat of that change, whatever it is, which gives rise to the phe- nomena of chorea. And it is most certain that the irregular movements by which chorea is characterized can neither be considered as the effects of imperfect paraly- sis, as some ha"e slated, nor of convulsion, in the proper sense of that word, as others have asserted ; but rather as consequences of the want of due harmony and agree- ment between the various muscles, which should combine to produce the desired state either of rest or of motion. There is a defect of the requisite association in the actions of the different muscles ; and it is in this sense that chorea has been de nominated insanity of the muscles. There is a certain portion of the brain which ministers to the intellectual functions ; there are certain altered states of that portion, which lead to mental aberration ; the persons so affected form false judgments ; cannot associate their ideas aright. So also there is a certain portion of the ence- phalon which presides over the locomotive functions ; and there are altered states of that portion, which lead to a loss of the due association of muscular contraction)! 2e 2i2 402 CHOREA. That portion is the ccrebtllum. Such is their theory ; and it is a very plausible and pleasant, but withal an unsatisfying theory. The disorder really belongs, I appre- hend, to the excito-motory department of the nervous system. From some infirm or unnatural state, either of the cord or of the incident nerves that convey impres- sions to it, its reflex function is called into irregular play, and voluntary muscles con- tract independently of volition. Sometimes, at the same instant, the patient ivilla certain definite movements through the instrumentality of the very same muscles. But the authority of the will is impaired, and the automatic motions are proportion- all}^ strong and unruly. The consequence is, that the same muscles, receiving at the same time contradictory orders from these two sources, obey neither mandate completely, but give rise, by their discordant action, to the grotesque and seemingly antic gestures which these patients exhibit. But to leave these seductive theories, and return to duller matters of fact. Chorea is a complaint that is seldom attended with any bodily pain. I have in several instances, however, known it to be accompanied by pain in the head ; and in some of them, with pain on that side only of the head which was opposite to the agitated limbs. I mention this as being of some practical importance ; for I have found the disease to become sensibly less severe, and very soon to cease, upon drawing blood by leeches, or cupping, from the painful side of the head. In a greater number of cases, however, no such pain is experienced. Sometimes you wall find that in all respects, excepting the nervousness, and the irregular movements, the patient is in the enjoyment of perfect health. But neither is this very common : generally there is something manifestly wrong in the state of the stomach and bowels, either before or during the complaint ; a capricious appetite, costiveness, a tumid abdomen, offen- sive breath, a foul tongue. Chorea is sometimes complicated with other disorders, and above all with hysteria : and no wonder, since they both occur chiefly in persons of the same sex, of the same susceptible temperament, and at nearly the same period of life. It is said also to happen in conjunction with acute rheumatism and rheumatic pericarditis; and with certain affections of the skin. Its coincidence with cutaneous complaints, if not merely accidental, may perhaps be owing to irritation of the peripheral extremities of afferent nerves, by the eruption. Judging from my own experienQg alone, I should not say that the disease was often associated with acute rheumatism. Dr. Copland and Dr. Bright have both, however, noted that connection, and therefore I cannot doubt that it does sometimes exist. I certainly have seen jactitations hke those of chorea in a few instances of rheumatic carditis. Very lately a boy, affeQted with chorea, became my patient in the hospital. We soon detected a strong bellows sound of his heart ; and tracing his history back a little, we found that he had suffered acute articular rheumatism. In a recent volume of the Medico-Chirurgical Trans- actions, there is a paper by Dr. Bright, detailing " cases of spasmodic disease, accompanying aflections of the pericardium." Now we do not perceive any obvious or direct connection between the cardiac disorder and the nervous disorder. There are just two conjectures which occur to me upon the subject,- Rheumatism (as we shall see by and by) is especially a disease of fibrous structures, and it usually affects various fibrous parts at the same time. It is not improbable, therefore, that in the cases in question, some morbid condition of the membranes of the spinal canal may have arisen, simultaneously with the inflammation of the pericardium. Or the car- diac disease may perhaps operate, by some ill-understood influence, upon afferent nerves of the cord, as an eccentric cause of the irregular movements. Probably any thing which makes a forcible impression upon the nervous system ma}^ act as an exciting cause of chorea. Strong mental emotion, or a sudden menta shock, is very likely to bring it on in those of a movable constitution who are pre disposed to it. Of its ascertained or alleged exciting causes, fright is beyond al comparison the commonest. It has been known to follow a blow or fall on the head but even in these cases the alarm may have had more to do with the disorder than the blow itself. It sometimes seems to depend upon irritation of the stomach o' Iwwels, by improper diet, by accumulated feces, or by worms ; and it is found to be connectea, m not a few cases, with difficult and painful menstruation. It frequently CHOREA. 403 begins about the period of the second dentition : the late Dr. Gregory, of Edinburgh, was in the habit of relating instances of that kind. In one case, the old teeth were remaining while the new ones were appearing by their sides. The old teeth were drawn, and the removal of the chorea were complete. This Dr. M. Hail would justly call eccentric chorea. But even in such cases the state of the gums cannot be regarded as the sole cause of the chorea: there must be the predisposition, as well as the accidental exciting cause ; for the complaint is apt to recur under the agency of some new irritation, and may then be removed by other means. [We have not found the disease to be much influenced by the season of the year or con- dition of the atmosphere. Duges, Rufz, Spangenburg, and Blache state that it occurs most frequently in summer. According to the statements of Rochoux, Chervin, and Danste, it is a rare affection in the southern hemisphere. It is not a very frequent disease in Philadel- phia.— C] Chorea, such as I have been describing it, may last from a week or two to some months. In those eighty-four cases which I have already mentioned as having been reported by Dr. Reeves, the shortest period of medical treatment was two weeks ; the longest eight months ; and the common average seven weeks. This appears to me a long average. The disorder often terminates — at any rate much more often than epilepsy does — at the period of puberty ; especially upon the first coming on of the menstrual discharge in the female. [Chorea, like epilepsy, may be excited by imitation (Andral) ; the fact is, however, denied by Rufz and Blache. — C.] I had occasion, in the last lecture, to remark, that when a vast number of different drugs are recommended as specifics in any given disease, we may sometimes infer from that very circumstance that the disease is difficult of cure, and generally in- tractable under all plans of management. But there is another class of diseases which a variety of drugs are supposed capable of curing, — those, namely, which tend to terminate in health, I believe that many cases of chorea — most cases — would at length get well without any aid from physic : I believe also that many of the boasted specifics have been quite innocent of any share in the recovery of the patients to Avhom they were administered ; at the same time I am quite certain that treatment has a great influence over the disease. It was Sydenham's practice first to bleed and purge his patients, and then to ad- minister bitters, aromatics, and antispasmodics, with a view of strengthening the nerves. After his time the blood-letting and purgatives fell into disuse, until the publication of Dr. Hamilton's well-known work again brought the latter deservedly into favour. The treatment of chorea embraces two definite objects. The first, and chief, is to give stability to the unduly movable nervous centres. The second is to remove or avert whatever may be likely to produce unnatural excitement of their incident nerves. Now the complaint is seldom (in its genuine form I may say it is never) dependent upon any organic or inflammatory disease. The instrument is not broken anywhere, but it is slackened, jangling, and out of tune : and (to pursue the metaphor) we often can restore its harmony by bracing it up again. I can confidently recommend you to abstract blood locally in those cases in which there is a fixed pain in the head ; but with this exception, blood-letting is neither useful, nor even (in my opinion) justifiable. There is oftener a deficiency than a redundance of red blood in the system. I shall not attempt to distract your attention by discussing the various remedies that have been vaunted against chorea; but shall take the hberty of referring )0u to books (to Dr. Copeland's Dictionary, for example) for further information on thai subject, and content myself with teUing you what modes of treatment I have been in the habit of employing, with very satisfactory resuhs. I think, then, setting aside the complication with headache just mentioned, you will be able to deal successfully with most of the cases of chorea which you may have to treat, if you have xi vour 404 CHOREA. command purgative medicines, the shower-bath, preparations of iron and of arsenic, and the oil of turpentine. It will be right, in all cases, to begin by clearing out the bowels with calomel and jalap, or some active aperient ; and you should persist in the regulated use of purga- tive medicines, if they continue to bring away much fecal matter. You are to be guided less by the amount of the doses than by the effects they produce ; at any rale one fuU evacuation of the bowels should take place every day. But though purgatives are good auxiliaries, we cannot trust to them alone for the cure of the complaint. One of the most effectual of the tonic remedies is the cold shower bath. If the patient be of a feeble constitution, the water may at first be used tepid ; by degrees it should be used cold. This remedy should be employed every morning, or every other morning, early, as soon as the patient gets out of bed. Of the best indications of the propriety of its continuance I spoke in the last lecture only ; I need not tire you, therefore, by repeating the observations I then made. With this external tonic it will be right to combine some internal one ; and for the most part, the best for the purpose is some preparation of iron. The carbonate of iron is an exceedingly good form, and it may be given in the way recommended by Dr. EUiotson, one of whose pets it is, — namely, mixed with twice its weight of treacle, so as to form an electuary. You may begin with it in half-drachm doses, and presently increase the quantity to a drachm, or a drachm and a half, or two drachms. Much larger quantities indeed have been given, and that for a long time together ; but I am not in the habit of so pushing this drug. Patients do not like to swallow from half an ounce to an ounce of the powder and twice as much treacle three or four times a day ; and some of them cannot get so much down. And I mentioned on a former occasion that the iron is apt to accumulate in the large intes- tines, and to be expelled at last, often with difficulty and pain, in large, hard, red masses, like what is called, I fancy, slag, or the dross of iron ore from a furnace. When one or at most two drachms given three or four times a da}^ make no impres- sion on the disease, you had better (in my humble judgment) change the form of the medicine. Give two or three grains of the sulphate of iron for a dose, or fre- quent draughts of Griffith's mixture (mistura ferri composita), or twenty or thirty minims of the tinctura ferri muriatis. Dr. Bright says he has found the sulphate of zinc answer when the carbonate of iron had failed, and the iron succeed when the zinc had done no good. One most severe case, about which I was consulted, and which had resisted other remedies, got well under the use of the sulphate of zinc ; the dose of which was gradually increased to ten grains, given three times a day. Whenever the medicine was pushed beyond this point it became emetic. Certainly the disease is often very obedient to arsenic ; but, for plain reasons, it is better ta effect a cure, when we can, by less hazardous substances. The gravest case I ever had to treat occurred, not long since, in one of my hospital patients. I tried the carbo- nate of iron in vain. The shower bath so terrified and agitated the girl that I could not persist with it. I then gave her arsenic, under which she improved at first, but it ultimately was very injurious ; her bowels were greatly irritated by it, she became paralytic in her lower extremities, and sank into a typhoid state ; and I really was afraid that I should lose her. But she recovered from this condition, which I could uot but ascribe to the arsenic ; and as soon as I dared venture, I began to give her the muriated tincture of iron, twenty drops at a time, every six hours. Under this treatment she steadily and rapidly improved, and was soon quite well. [Recently very decided testimony has been presented by Young, of Pennsylvania, Lindsly, of Washington, Hildbreth, of Ohio, Kirkbride and Professor Wood, of Philadelphia, and Beadle, of New York, in favour of the efficacy of the cimicifuga, or black snake-root, in cases of chorea. It may be given in the dose of half a teaspoonful of the powdered root three *i»nes a day ; or from one to two drachms of the saturated tincture, or a winegiassful of the decoction. The cyanuret of iron, in the dose of three grains three times a day, in the form of a pill, has been strongly recommended by Dr. Zollickoffer, of Maryland. The cyanuret of zinc, in the dose of one-third of a grain, twice a day, gradually increased tc fourteen grains in the twenty-four hours, has recently been highly spoken of by the physi <»&j)S of Berlin and elsewhere. See Condie on Diseases of Children. — C] CHOREA. 405 The oil of turpentine also is certainly a valuable medicine in this disease ; whether there be worms at the bottom of it or not. When the bowels are torpid, and the girl is of that age when menstruation may be conjectured to be at hand, its arrival seems sometimes to be accelerated, and great relief to be produced by the turpentine. The best way of exhibiting it in such cases is in combination with an equal quantity of castor oil; two drachms or half an ounce of the mixture may be given every morning, or every other morning, according to its effect upon the bowels ; and when they are very sluggish, or the stools are unnatural, it will often be serviceable to give a couple of grains of calomel also, twice or thrice a week, at bed-time. It is scarcely necessary for me to say that due attention must be paid to the diet. This ought to be plain and simple, but at the same time nourishing, and even gene- rous. Exercise, short of that which produces fatigue, in the open air, in fine and dry weather, will also conduce much to the patient's recovery. And all kinds of immoderate emotion should be guarded against : for the contest often seems to lie between the emotional and the voluntary impulses to action. The stillness of the muscles during sleep is in accordance with this behef. There is an affection (it scarcely deserves to be spoken of as a disease) which is Bometimes called chorea, of a chronic nature, and resembling the disorder I have just been speaking of, inasmuch as it commonly is met with in nervous persons, and consists in the irregular, unmeaning, and involuntary contraction of certain muscles, especially in the limbs, neck, or face : but differing from it in this, that the same muscles are always affected, and in the same way; that it lasts long, almost always for life, and implies no accompanying derangement of the general health. In its slighter form the irregular movements are ratlaer awkward tricks than spasms : a repeated shake of the head, or knitting of the eyebrows, or corrugation of the integu- ments of the nose, or shrugging of the shoulders — which the person seems hardly conscious of. At other times, however, the motions are more extensive ; a limb starts out, or the head is turned awry ; and the individual who performs these evolu- tions is quite aware that he does so, and vexed and annoyed at the ridiculous figure he makes, but he cannot help performing them ; or if he can prevent it, the necessary effort is worse than the disease. One young man who was subject to this infirmity told a friend that he could stop the movement by a strong exertion of the will ; but that tJutt exertion was extremely painful, and was followed by languor and much discomfort. In some instances 1 make no doubt that the continuance of the affection is the result of a long-established habit. It occurs more frequently in men than in women. I had for a long lime, as an out-patient at the hospital, a girl about seven- teen years old, in all other respects the picture of health, but who was annoyed by an involuntary shake of the head, which took place two or three times in a minute. She received no benefit from medicine. A lad in my own service was affected in a similar manner. He seemed to be giving me, and my friends, from time to time, a famihar nod ; and I was obliged to part with him. Others are subject to twitchings of the face. I am acquainted with one gentleman who is perpetually wrinkling his nose: and he has assured me that he was subject, when young, to an involuntary shake of the head, hke the two persons just mentioned ; but a blister having been once applied to his throat for some disorder in his air-passages, the shaking of the head was thereby rendered painful and difficult, and the movement there ceased : but (as he expressed it) it broke out in his nose, where it triumphs to this day. This chronic chorea, as it has been called, I merely mention to prevent your confounding together two affections which, though they have received the same name, and are in some respects analogous, yet differ in still more points, and those points of more im portance. 1 believe that medicine has no power over any of these tricks. They are distressing and unsightly ; but in no way dangerous. The word chorea, which you know signifies a dance — and the trivial term of St. Vitus's dance — are not very appropriate to either of the nioaifications of the nervou:i affection which I have been noticing. In fact that terra was originally apphed, and much more suitably, to another set of symptoms of a most singular kind, concerning 406 CHOREA. the real occurrence of which we mifrht well be sceptical, if we had not authentic narratives of many instances of such disorder from different persons of credit, as well in this country as in others. What has happened many times before, may happen again ; and you ought not to be in ignorance of the histories to which I allude. They relate to an affection cliaracterized by movements that cannot be called spasmodic, but are rather owing to an irresistible propensity to muscular action, increased sometimes to a sort of mania by the force of imitation, or by the sound of music. It is the voUliori that, in these cases, is morbid and perverse. You might fancy the patient to be possessed and coerced by an evil spirit, like the Sat.^uom^nfx.si>oi, of the Gospel history. Some of the subjects of these extraordinary affections, impelled by a strange unin- telligible necessity, execute measured and regular movements with surprising energy, rapidity, and perseverance. When music is performed in their hearing, the move- ments become an actual dance ; and where crowds are collected together, the dancing mania is apt to spread from person to person by a sort of imitative infection ; real- izing the fable of Orpheus, and giving origin (it may be presumed) to those romantic legends met with in the hterature of most ages and countries, of universal, involun- tary, and unceasing saltation, at the sound of a magic pipe. To these feats the term chorea is apposite enough. Indeed I have seen it somewhere suggested that the phrase chorea Sancti Viti is but a vulgar corruption of chorea Sancii inviti ; and took its rise in the misfortune of some holy person who chanced to be afflicted with one of these unwilling but invincible impulses to caper. The common explanation makes this holy person to have been a certain German saint Weit, to whom a chapel is said (I know not with how much truth) to be dedicated at Ulm, in Suabia. Sometimes, instead of dancing on their feet, these patients drum and beat with their hands, either upon their own knees, or upon the objects near them. This variety has received the bombastic title of "malleation." Sometimes they circum- volve with great rapidity ; or they turn their heads repeatedly from side to side with great velocity: this is "rotation." When they are irresistibly impelled to move in a given direction, the term " propulsion" is employed. The very invention of these names attests the reaHty of the disorder. You will find one of these singular cases related by Mr. Kinder Wood in the seventh volume of the Medico- CI drurgical Transactions. The patient was a young married woman. After having suffered severe pain in one side of her face, she began to be troubled with involuntary movements. They commenced in the eyelids, which were opened and shut with excessive rapidity. Then the muscles of the extremities became affected. The palms of the hands were beat rapidly upon the thighs, and the feet upon the floor. The motions soon ex- tended to the trunk and pelvis. The patient was suddenly half raised from her chair, and instantly reseated. This was repeated as quickly as one action could possibly succeed another. Sometimes she had a propensity to leap upwards, and strike the ceiling with the palm of her hand ; or to touch little spots or holes in the furniture of the room. Or she would dance on one leg, holding the other in her hand. These attacks were accompanied by headache, sickness, and vomiting. At last she took to making steps about the room, regulated b};- an air, or by a series of strokes on the furniture as she passed, her lips moving as if words were articulated, but no sound escaping them. A person, thinking he recognized the tune which she beat on the furniture, began to sing it ; and she danced directly up to him, and con- tinued dancing till he was out of breath. A drum and fife were now procured, and the same air played upon them. She immediately danced up to the drum, and as close to it as possible, till she missed the step, when the motions instantly ceased ; and this was found always to be the case. The motions stopped also when the measure was changed ; or was increased in rapidity beyond her power to keep pace with it. A continued roll on the drum had also the effect of putting an end to her movements. This being discovered, their approach was Avatched ; and by always rolling the drum as soon as they threatened to begin, the chain of association which seemed to constitute the disease was at length broken. The bowels were in an unnatural state during the complaint ; and the menstrual discharge appeared on the CHOREA. 40"" evening' cf the day on which it ceased. One might conceive that the conduct here described was an indication of folly or of insanity ; but Mr. Wood declares that the patient's spirits were good, and her perception and judgment accurate and just ; that during the absence of the paroxysms she went about her household affiiirs as usual ; and that she had a correct knowledge of her situation, and of the advantage she derived from the drum, with an anxious desire to continue its use. She stated " that there always was a tune dwelhng upon her mind, which at times becoming more pressing, irresistibly compelled her to commence the involuntary motions." In a lady, whom Dr. Abercrombie saw, the following symptoms, among others, occurred : — After she had been ill with various nervous affections for two years, she began to suffer convulsive action of the muscles of the back, and involuntary twitches of the legs and arms, producing a variety of movements of the whole body very diffi- cult to describe. These were much increased by touching her, especially on any part of her back. This is a symptom quite in conformity with Dr. Hall's doctrine of eccentric irritation. At one time there was difficulty of deglutition, so that attempts to sv/allow produced spasms, resembling those of tetanus. At other times, after lying for a long while quiet, she would in an instant throw her whole body into a kind of convulsive spring, by which she was jerked entirely out of bed : and in the same manner, while sitting or lying on the floor, she would fiing herself into bed, or would .eap, as a fish might do, upon the top of a wardrobe fully five feet high. These are feats that surpass the powers of a person in health : and I say we should hesitate to believe them if they were not related by a physician of such sober judgment and unquestionable veracity as Dr. Abercrombie. He tells us that during the whole of these symptoms her mind continued entire : and the only account she could give of her extravagance was, a secret impulse which she could not resist. But after a time motions still more wonderful commenced, affecting the muscles of the upper part of the back and neck, and producing a constant semi-rotatory mo- tion of the head. This sometimes continued without interruption night and day for several weeks together ; and if the head or neck were touched, the motion was increased to a most extraordinary degree of rapidity. These paroxysms were relieved by nothing but cupping on the temples to the amount of ten or twelve ounces, when the affection suddenly ceased, with a general convulsive start of the whole body. She was then immediately well, got up, and was able to walk about in good health for several weeks ; when the same symptoms returned, and required a repetition of the same treatment. All this went on, at intervals, for four years ; the menstruation during that time being irregular and scanty, and the bowels torpid She was pale and bloodless from the frequent bleedings, but not reduced in flesh At last, in the spring of 1829, she had a severe paroxysm of the rotatory motion of the head ; and it was then determined to allow the attack to take its course, and to direct the treatment entirely to the menstruation. Sulphate of iron, and Barbadoes aloes, were prescribed. She went on for three weeks, the convulsive motion of the head continuing without intermission night and day. At length, in the middle of the night, the paroxysm ceased in an instant, with the same kind of convulsive star' of the whole body with which it used to cease after cupping. At the same instant menstruation took place in a more full and healthy manner than it had done for many years. From that time she remained well ; at least up to the period when Dr. Abercrombie wrote the account. The alternating rotatory motion of the head is by no means an uncommon feature of these singular cases. It occurred in a patient of Dr. Conolly's ; in whom the menstruation was irregular, and about to cease altogether. It came on in parox)?-sms which were repeated many times a day, and was attended with inordinate loquacity. The head was turned from side to side about eight times in a second, and each paroxysm lasted three or four minutes. The patient got well after being cupped and leeched, and thoroughly purged. I have seen precisely the same thing in a hospital patient. Dr. Crawford met with an instance of involuntary rotation of the head, without pain, but attended with intolerance of light. And there is a striking example of it described in the twenty-third volume of the Edinburgh Medical and Surgical Journal, by Mr. Hunter, of Glasgow, who speaks of it under the name o/ 408 CHOREA "rotatio or chorea." The motions are said to have been furious and alarming: they were executed with such extreme rapidity, that it was difficult even for the eye to follow them. She appeared, Mr. Hunter says, absolutely to be looking backwards and forwards, and in every direction, at the same moment. This woman had some- times fifty paroxysms of this kind in a day : they greatly exhausted her ; but she was perfectly rational in the intervals. A modification of the same kind of affection took place in a most extraordinary case recorded by Dr. Watt, of Glasgow, in the fifth volume of the Medico-Chirurgical Transactions. His patient was a girl ten years old. First she had headache, accompanied by vomiting, and increased by the slightest deviation of the body from the erect posture, either backwards, or forwards or to one side. These symptoms lasted about a month ; and during that time she lost the power of speech and of walking. At the end of that period she was seized with a propensity to twirl round on her feet, hke a top, with great velocity, always in one direction ; and was pleased when those about her assisted in increasing the rapidity of her movements. After continuing nearly a month, these motions ceased, the headache relumed, and she became unable to move her neck, or support her head. Soon after, she was visited with a new kind of motion ; she would lay her- self across the bed, and turning over like a roller, move rapidly from one end of it to the other. At first the fits of this kind lasted two hours ; but they gradually extended to six or seven hours every day. On being carried into the garden she rolled rapidly from one end of a gravel walk to the other ; and even when laid in the shallow part of a river, though apparently on the point of being drowned, she began to turn round as usual. The rotations were about sixty a minute. She made httle or no use of her arms in revolving. In about another month or six weeks an entirely new set of movements began. She lay upon her back, and, by drawing her head and heels together, bent herself like a bow, and then allowing her head and heels to separate, her buttocks fell with considerable force upon the bed. She repeated these movements ten or twelve times in a minute, first for six hours daily, and at length for fourteen. After another space of about five weeks had elapsed, the most singular freak of all ensued ; she became possessed with a propensity to stand upon her head with her feet perpendicularly upwards. As soon as the feet were elevated in this manner, all muscular exertion seemed to be withheld, and the body fell down as if dead; her knees striking the bed first. This was no sooner done than she instantly mounted up as before ; and continued to do so from twelve to fifteen times in a minute, for fifteen hours a day. After a variety of fruitless treatment, a spontaneous diarrhosa came on, and she recovered. The spinning motions observed during a part of this case have been observed in other instances. In Magendie's Journal de F/u/sioIogie, the two following singular forms of dis- ease are referred to. A man, after some other symptoms of cerebral disorder, was seized with an irresistible inclination to move forwards, stopping only when ex- hausted. He would sally forth into the streets, and continue walking straight forward until he dropped down from fatigue, and was obliged to be brought home in some conveyance. This man at length died, and several tubercles were found in the anterior hemispheres of his brain. Dr. Laurent of Versailles, exhibited to the Academy of Medicine a young girl, labouring under the exactly opposite necessity. In the attacks of a nervous disease she was irresistibly propelled backwards, and with some rapidity : being unable to avoid obstacles or hollows, she received many falls and bruises in her course. I say that histories such as I have been giving vou some samples of, and those mostly in an abridged form, would sound very like romances, if they were met with in the old authors alone, or if they were not attested by unimpeachable au- thority They resemble chorea in this respect, that they are examples of muscular actions performed by persons in possession of consciousness, and performed in spite of themselves. But in most other respects they differ from what we now-a- days mean when we speak of chorea. Perhaps they may rank among hysterical vagaries. It is remarkable that the majority of them occur in young women, in wnom :ne menstrual function is suspended or irregularly performed. Some persons CHOREA. 409 may consider them as varieties of insanity. The patients certainly did not feign to be ill, for the feats of strength and agility which many of them enacted were much beyond their natural power and endurance. The truth seems to be, that there are * innumerable modifications of the nervous functions, and that some of them are more common and more capable of being arranged into groups than others ; but that they all offer points of resemblance, like (as I observed before) the different members of a large family, in which the individuals have the same general cast of features, and yet preserve each his particular identity. I advert to these odd forms of disease with a view of directing your attention to such of them as may come in your way. We are yet terribly in the dark about morbid affections of the nerves, both organic and functional. Hereafter some medi- cal Newton will arise, and reduce all these apparently compHcated phenomena under one simpler law. At present all that we can do is to collect and, as far as we may, to arrange facts, in the hope that at length some better light will be shed upon the subject. And it must be observed that some of the modern researches into phy- siology do throw a little glimmering of illumination into these dark corners of pa- thology. In certain of M. Magendie's experiments on animals the following curious facts were ascertained : — When a vertical section of the cerebellum of a rabbit was made, leaving one-fourth of the whole adhering to the crus of the right side, and three-fourths to the left, the animal rolled over and over incessantly, turning itself towards the injured side. The same phenomenon occurred upon the division of the crus cerebelli. The animal lived for eight days, and continued during the whole of that time to revolve upon its long axis, unless stopped by coming in contact with some obstacle. How like is this to the symptoms exhibited at one period in the girl whose case is related by Dr. Watt ! Nor is Dr. Watt's case a singular one ; M. Serres has described another much resembling it. A shoemaker, sixty-eight years old, of intemperate habits, after one of his debauches, exhibited a kind of drunken- ness which surprised his friends. Instead of seeing objects turn round him, as a drunken person is apt to do, he thought he was himself turning, and soon began to revolve ; and this lasted till he died ; and when his head was examined, extensive mischief was found in one of the peduncles of his cerebellum. Again, M. Magendie noticed that when the upper part of the cerebrum is gently removed in birds and mammalia, they become blind ; but no affection of the locomo- tive powers is produced. No further result is occasioned by the removal of a portion of the gray matter of the corpus striatum : but when the striated part is cut away, the animal immediately darts forward with rapidity, and continues to advance as if impelled by some irresistible force, until stopped by an obstacle ; and even then it retains the attitude of one advancing. The experiment was tried with the same resuk upon various species of animals — dogs, cats, hedgehogs, rabbits. Guinea-pigs, and squirrels. It seems that there are horses that cannot back ; although they make good progress enough in a straightforward direction. Now Magendie says that he has opened the heads of such horses ; and has always found, in the lateral ventricles of their brains, a collection of water, which must have compressed and even disor- ganized the corpora striata. It has further been ascertained, by the same experi- menter and by others, that certain injuries of the cerebellum cause animals to move backwards contrarily to their will. If the tail of the animal so mutilated be pinched, he still persists in his retrograde course. Injuries of the medulla oblongata had the same effect. Pigeons into which he forced a pin through that part, constantly re- ceded for more than a month, and evenjleiv backwards. A section of the medulla oblongata, where it approaches the anterior pyramid, gives rise to a movement in a •circle, like that of a horse in a mill: the animal, in its walk or its flight, bearing round continually to the injured side. Surely we have, in these facts, supplied by experiments on living animals, and by observation of the phenomena of disease in the living human body, some of the materials for a more exact knowledge, both of the physiology and of the pathology of the nervous system, than we have yet reached. M. Magendie supposes that different portions of the encephalon are en dowed with energies which tend to cause motion in various directions ; that in the healthy state these balance each other, and that a prcponderalmg impulse can be 2 k 410 CHOREA. given to any one of these forces by the will ; but that when the equilibrium is: destroyed by disease, the will is not sufficient to counteract the tendencies which are' then brought into play. Mr. Mayo offers a different explanation of the phenomena. He supposes that the injuries inflicted on the nervous matter produce a sensation] analogous to vertigo; and that the animal conceives itself either to be hurried for- ward, and makes an exertion to repel the imaginary force ; or to be moving back ward, or turning round in one direction, and endeavours to correct this by moving ; the corresponding muscles. Whatever may be the true explanation, lihe facts themselves are abundantly curious and interesting, and I recommend them to your attention. Some of the affections that I have been describing, fall, perhaps, under th^ cate- gory of those to which the appellation of the leaping ague has been given in some parts of Scotland. There is a class also of convulsive spasmodic affections which resemble epilepsy on the one hand, and chorea on the other, or rather form a hnk of alliance between the two, and which are especially remarkable for this, that they are capable of being propagated by that kind of imitative contagion of which I have several times spoken. This point might be well illustrated by the history of various sects of religious enthusiasts. One or two of those enthusiasts have apparently at first worked themselves up into a state approaching to epilepsy, accompanied even by insensibility sometimes ; and then this state has been communicated by sympathy to the more susceptible of their auditors. I must not, however, go into any further details on this subject ; and perhaps I have prosecuted it too far already. Those among you who are inclined to pursue it further may find some curious accounts of an epidemic which occurred in Lanarkshire, in Sir John Sinclair's Statistical Ac- count of Scotland, under the head of the " Conversions of Cambuslang ;" a:nd in one of the early volumes of the Edinburgh Medical and Surgical Journal. Dr. Robertson has described, in an inaugural dissertation De Chorsed Sancti Viti, a similar epidemic, which occurred in the states of Tennessee and Kentucky, in the western districts of America. This is also referred to in the same volume of the journal. Among other things. Dr. Robertson says, that while extravagant sounds, and actions, and gesticulations, were in the first instance 7vilful, the actors " at length to their own astonishment, and the diversion of many of the spectators, continued to act from necessity the curious character which they had commenced from choice." I will only remark further of such forms of nervous disease, that as they spring often from moral causes, so they admit, in a great degree, of moral remedies. The pranks played by the Scotch enthusiasts were brought to an end by threatening to duck every one who should thereafter be attacked ; and, I believe, a few of them loere horseponded, by way of example. With respect to the solitary instances of per- verted locomotion, our business must be to correct whatever is wrong in the state of the bowels : in women, to amend the disordered uterine functions ; to strengthen and confirm the system generally ; and, in addition to the measures proper to effect these objects, I suspect that the cold sousing would in many cases be found of most material service. LECTURE XXXVIII. Paralysis Agitans. Mercurial Tremor. Hysteria : Two forms of Hysteric Pa- roxysm; Diagnosis from Epilepsy ; Class of Persons most liable to Hysteria ; Diseases apt to be simulated by Hysterui ; Treatment ; Prevention. In the last lecture I spoke of chorea, and of some singular forms of disorder that have sometimes been included under the samtj appellation; and I shall begin the present with a few observations concerning a disease very closely allied to some of those which we were then considering, and yet distinct enough to deserve and require a separate notice. I refer to what has been called the shaking pcdsy — paralysis agi PARALYSIS AGITANS. 411 tans. Allusions to this fo/m of diseaiie are to be found in manj- of tli'^, older sys- tematic writers on physic ; but it never was much attended to in this country until Mr. Parkinson published an essay upon it in the year 1817; and a very interesting little pamphlet it is. He defines the disease thus : — "Involuntary tremulous motion, A'ith lessened muscular power, in parts not in action, and even when supported : with a propensity to bend the trunk forwards, and to pass from a walking to a run- ning pace : the senses and intellects being uninjured." The latter symptoms consti- tute the scelotyrbe festinans of Sauvages ; and the former symptoms of the definition are not always attended by the latter. In old persons you may often observe incessant and involuntary nodding and shaking of the head, without any tendency to run for- wards. There is an old woman whom I see regularly sitting in the aisle at church every Sunday ; she walks to her seat slowly and steadily enough, and sufficiently upright ; but her head never ceases to nod, and wag, and tremble in various directions. It may be that she is in the less advanced stage of the malady ; but I have remarked her for three or four or more years, and I see no change. Mr. Parkinson's notice was first called to the disease during his professional attend- ance upon a person afl^ected by it. From observation of that case, and of several others that he subsequently met with, his account of the disorder was drawn up. He states that its first approach is insidious, and its progress often so slow and imper- ceptible that the patient cannot recollect precisely when it began. A sense of weak- ness, and a disposition to trembling, fastens on some particular part : sometimes it is the head, but more commonly it is one of the hands or arms. These symptoms gradually become more decided ; and at length the morbid influence is felt in some other part. At a still more advanced period the patient is found to be less strict than usual in preserving an upright posture, even when standing or sitting, but especially when walking. By degrees he finds a difficulty in making the hand obey the dictates of the will when he is engaged in any delicate manipulation — in writing, for exam- ple ; and he is obliged to walk with circumspection and care : his legs are not raised t(» that height, nor with that promptitude which the will directs; so that much attention is necessary to prevent frequent falls. Then, as the malady proceeds, the propensity to lean forwards becomes more strong — the patient is forced to step on the toes and fore-part of the feet, while the upper part of the body is thrown so far forward as to render it difficult to avoid falling on the face : in some cases he is irre- sistibly impelled to take much quicker and shorter steps than common, and thereby to adopt unwillingly a running pace. When once this state has been pointed out, I make no doubt that some of you may recognize it in old persons whom you may have seen walking about. But the disorder does not stop here : the unhappy patient becomes unable to feed himself; or to walk at all without an attendant, who walks backwards before him, and prevents his faUing forwards by the pressure of his hands against the fore part of the patient's shoulders : his powers of speech and deglutition fail; and the saliva dribbles from his mouth ; he can no longer retain his urine or feces ; and at length death closes the miserable scene. Mr. Parkinson conjectures that this complaint results from some chronic change of the upper part of the spinal cord, or of the medulla oblongata : but dissections are wanting to support or to refute that conjecture. Some of the patients, whose cases he has given, had been intemperate livers ; hard drinkers ; others had not been guilty of any such excesses : several had suffered a good deal from rheuma- tism, which he thought might have laid the foundation of their lamentable disease. But a more exact pathology of the shaking palsy is still needed. Dr. M. Hall observes that the symptoms have, in several particulars a marked resemblance to the effects observed by M. Serres (and related in his Jlnatomie du Cerveau) of disease of the tuber annulare, or of the tubercula quadrigemina. Nor have we any ascertained means of curing this disease ; or rather this state ot decay. Dr. Elliotson indeed says that he succeeded in one instance (of which, how- ever, the particulars are not given), with the carbonate of iron ; but that he had tried the same medicine in vain in several other cases. We must administer to symptoms, and endeavour to set those functions right which may be obviously wrong: to regulate .the bowels, to procure sleep, to nourish and uphold the pa 412 MERCURIAL TREMOR. tient without unduly stimulating him; and this is all that I can tell you of the shaking palsy. Another analogous disorder, meriting a moment's notice, is that peculiar kind of trembling which is apt to occur in persons who are much exposed to the poisonous lumes of mercury : mercurial tremor it is called ; and popularly, the trembles. It consists of a sort of convulsive agitation of the voluntary muscles, which is most violent whenever efforts are made to move the hmbs by the help of those muscles ; whenever, in fact, volition is brought to bear upon them. It differs, therefore, from the shaking palsy, inasmuch as the tremor ceases when the muscles are supported, or are not called into action. It is also more susceptible of relief by medicine. The last person in whom I have witnessed this curious affection has been twice my patient in the Middlesex Hospital, and has twice got well there. John Chattin, 33 years old, was first admitted in August, 1837. He was led into the room, walking with uncertain steps, his limbs trembling and dancing as though they had been hung upon wires. While sitting on a chair he was comparatively quiet ; you would not have supposed that he ailed any thing ; but as soon as he attempted to rise and to walk, his legs began to shake violently with a rapid, incessant, and irregular motion. He could neither hold them steady, nor direct them with precision. Indeed without sup- port he must have fallen down. His arms were agitated with similar involuntary movements. His tongue was tremulous, and he spoke in a hurried, abrupt, inter rupted, staccato manner, not natural to him. He had no fever. His pulse was (56, and soft ; his skin natural : his bowels costive. He complained of shght nausea. At the end of six weeks he went out w^ell, or with very slight remaining weakness of his knees, and a httle occasional tremor upon unusual exertion. In June, 1S39, he again presented himself, in a similar state of agitation and helplessness. This man was a water-gilder ; and had been employed in that business for 18 years. Till somewhat more than a twelvemonth prior to his first appearance at the hospital, he had been free from disease. Then he began to tremble a little ; but for a fortnight before his admission the shaking had become so much worse that he could not go up stairs, nor even walk upon uneven ground. The trembling, when once brought on by efforts to move, did not cease until he sat down, or got one of his fellow- workmen to grasp his limbs tightly. This singular disorder is produced by the agency of mercury as a poison upon the body ; and especially by the abforplion of that metal when raised into vapour by heat, and inhaled in breathing. It is accordingly very common among water- gilders. Water-gilding is the gildinc of metals, and of silver in particular, by means of fire. It is called ?ra/e;--gilding ( believe, to distinguish it from other kinds of gilding, called gilding in oil. Thf. silver to be gilded is covered with an amalgam of gold and mercury, and then is placed over a charcoal fire, by which the mercury is raised in fumes and driven oflj and the gold alone is left adhering. To these fumes the workmen are necessarily exposed ; and numbers of them become affected with this tremor, which is not a common result of mercury applied to the system in other ways. The same complaint is frequent among the workmen in the quick- silver mines of Friuli and of Almaden, where the crude ore is purified by the aid of heat. Dr. Bateman relates, in the 8th volume of the Mcdico-Ckinirgicul Traaaac- tions, some cases like that which I have been describing. But the best account of the disorder that I have seen is given by Merat, in an appendix to his book on the Cohque MetaUiqiie. The malady comes on sometimes suddenly, more often by degrees. The patient is less sure of his arms than usual: they become tremulous, and at last shake, and, if he continues to pursue his employment, the force of the trembling goes on mcreasing, tin at length it is so general and violent that he can persist no longer. His power of locomotion is impaired ; his mastication, his speech, all his n)anual operations, are interfered with ; he becomes unable to convey food to his moudi, and is obliged to be attended to and fed, like an infant; and by and by, if he does not quit the poisonous atmosphere, graver symptoms supervene — wakefulness, dehrium loss of consciousness. . MERCURIAL TREMOR. 413 As the tremor increases, the digestive organs become disordered ; the appetite falls off; nausea is felt, the tongue becomes furred, and gas collects in the intestines. The patients acquire a remarkable brown hue ; and their teeth turn black. The pulse is generally full and slow. The time required for the production of these effects varies much in different cases ; from two years to five-and-twenty. Something depends no doubt upon the quantity and intensity of the fumes. Chattin told us that the workmen became ill whenever they had a large job on hand. In both his severe attacks (and very often besides, both in him and his companions) the mercury produced salivation. This was unfrequent in the patients observed by Merat. The duration of the complaint is considerable : it may last two or three months, or longer ; and sometimes it is not completely recovered from at all. Yet it is not a fatal disorder. Although the visible affection is of the muscles, the mischievous operation of the poison is really upon the nerves, weakening their natural influence. When the will is directed upon the muscles, they contract unsteadily, and with frequent remissions ; their action is not sustained ; and it is a general observation by all who have written upon the disease, that it is aggravated by all kinds of mental emotion, by alarm, anger, surprise. My patient's shaking was, at first, augmented by the shock of the shower-bath : and always became excessive in thundery weather. So, on the other hand, it has been noticed that whatever tends to stimulate and fortify the nervous power, does temporary good : a glass of wine for example. Chattin informed us that, while the malady was coming on, he could not get up stairs to his work with- out first swallowing half a quartern of gin ; and that he was obliged to drink porter two or three times a day. The treatment consists in withdrawing the patient from the injurious atmosphere, and m administering tonics. Conium has been recommended by Mr. M'Whinnie. Q,uina has been found useful. But I have most faith in preparations of iron. My patient Chattin mended decidedly and rapidly when he began to take steel. It was not the mere avoidance of the cause of the complaint that produced the improvement, for he had been away from his work for a fortnight before he applied for admission. To prevent this effect of mercury, the workmen should be mstructed to avoid, as much as possible, inhahng the poisonous fumes, to ventilate the room thoroughly, and to pay great attention to cleanliness. I believe the furnaces may be so built that the metallic vapour shall not reach the operator. If he cannot avoid being in volved in it, perhaps some sort of respirator might afford protection. [A very peculiar form of convulsive disease has recently been described. It is charactei ized by repeated bobbings of the head forward, at first slight and occasional, but becoming, in process of time, so frequent and powerful, as to cause a heaving of the head forwards, towards the knees, succeeded by an immediate return to the upright position, somewhat similar to the attacks of emprosthotonos. In one case, related by J. W. West, these bobbings were repeated at intervals of a few seconds, ten, twenty, or more times, in each attack, which continued from two to three minutes, and recurred twice, thrice or oftener in the day; the filtack occurring whether the patient was sitting or lying. Durnig the attack, the child re- tained his consciousness. The other cases that have been since recorded by Drs. Barton and Bennett, in their general symptoms, differ in no degree from that of Mr. West, with the exception of that of Dr. Bennett, in which the disease was of a more aggravated character. Sir Charles Clarke has seen four cases of the disease, and from the peculiar bobbing of the head, has named it the Salaam Convulsion ; Dr. Locock has seen two cases. One of Sir Charles Clarke's patients recovered perfectly, the other became paralytic and idiotic, and died at the age of seventeen. Mr. West has heard of two other cases — one of the patients lived to the age of seventeen ; the other to nineteen, — both became idiotic. The sex and ages of the patients whose cases are on record, are one female of seven years, and two boys of on© and six years — death did not occur in either ; in the female and one of tlie boys the distase appears to have ceased. Of this strange form of convulsions, the pathology is still a subject for future investigation, and until that is ascertained, its treatment must be tentative and experimental. — C] I proceed to the subject of hysteria : a subject highly interesting and important, as well as obscure and difficult. I scarcely know how to arrange what " have to say so as to present the disorder to your notice in the most intelligible manner. Hysteria 2k3 414 HYSTERIA. has characters peculiar to itself: but it is apt also to assume the form, and mimic the symptoms, of various other diseases of a much graver nature. If we are not capable of distinguishing the true malady from that which is its double, we shall be constantly committing most serious mistakes in the prognosis, to our own damage and discredit; and in the treatment, to the injury of our patient. I shall hrst attempt to describe to you the phenomena which are peculiar to hysteria; and then to point out the class of persons who are most subject to it; and afterwards I shall briefly advert to the imitative freaks which we are almost daily witnessing in hys- terical consiitutions, and to some other points connected with this extraordinary complaint. I need not tell you that the hysterical joaroa:!/*^ '^ almost exclusively confined to women. [We have repeatedly seen all the phenomena characteristic of hysteria in the male sub- ject. The fact of their occurrence in males is also stated by Sydenham, Louyr Villermay, Georget, Ferriar, Frotten, Conolly and others. See also the admissions of Dr. Watson to- wards the close of his remarks on the pathology of the disease.-r^C] It occurs under a great variety of forms, but they may all be reduced, for conve- nience of description, to two. The first of these has a general resemblance to an epileptic fit. The trunk and limbs of the patient are agitated with strong convulsive movements; she struggles violently, hke a person contending; rises into a sitting posture, and then throws herself back again; forcibly retracts and extends her legs, while her body is twisted from side to side; and so powerful are these muscular contortions tliat it often is all that three or four strong persons can do to restrain a shght girl, and prevent her from injuring herself or others. The head is generally thrown backwards, and the throat projects ; the face is flushed ; the eyehds are closed and tremulous ; the nostrils distended ; the jaws often firmly shut ; but there is no distortion of the countenance : the cheeks are at rest, unless when, as often happens, the patient is uttering screams, or exclamations. If the hands are left at hberty, she will often strike her breast repeatedly and quickly, or carry her fingers to her throat, as if to remove some oppression there ; or she will sometimes tear her hair, or rend her clothes or attempt to bite those about her. With all this her breath- ing is deep, labouring, irregular; and the heart palpitates. After a short time this violent agitation is calmed : but the patient lies panting and trembling, and starthng at the slightest noise or the gentlest touch ; or sometimes she remains motionless during the remissions, with a fixed eye ; till at once the convulsive movements are renewed : and this alternation of spasm and quiet will go on for a space of time that varies considerably in different cases : and the whole attack frequently terminates in an explosion of tears and sobs, and convulsive laughter. There is a variety of this form of hysterical paroxysm, in which the patient sud- denly sinks down insensible, and without convulsions : with slow and interrupted breathing, a turgid neck and flushed cheeks; and she recovers from that condition, depressed in spirits, fatigued and crying. You will observe that the symptoms I have been enumerating belong to the nerv- ous system ; and indicate great derangement in th^ functions of animal life. In the other of the two forms to which all the various modifications of the attack may be reduced, the principal marks of disturbance are referable to some of the viscera. The patient experiences a sense of uneasiness in some part of the abdomen, fre- •juently towards the left flank ; a ball appears to roll about, and to rise first to the situation of the stomach, and then to the throat, where the patient feels a choking sensation ; the action of swallowing is frequently rej>eated ; the abdomen becomes distended \vith u-ind, loud rumblings and sudden eructations take place ; there is much palpitation of the heart, the patient is sad and sorrowful, and prone to fched tears. After the paroxysms, these patients commonly void a large quantity of hmpid, pale anne, looking almost like water; and this sometimes expelled during the fit. Such is a brief, and, I am aware, incomplete account of the hysterical pa.oxysm. U sets forth, however, in outline, the two principal varieties of the attack : -xfA yoii HYSTERIA. 415 are to observe that the last, the quieter form, is often the prelude to the convulsive ; out it not seldom also occurs alone, and then is as indicative of hysteria, as the petit inal, to which it is somewhat analogous, is of epilepsy. And before I go any further, let us again inquire into the circumstances which distinguish the paroxysms of those two diseases, epilepsy and hysteria. I have shortly adverted to these discriminative circumstances before ; but we shall be better able to appreciate them now that the main features of each diseased state have been under our consideration. It is of great importance to be able to render the dianrnosis certain and accurate. It is a dreadful announcement to have to make to a father or a mother that their child is epileptic ; whereas hysteria, though it is sufficiently dis- tressing, is attended, in nine hundred and ninety cases out of a thousand, with no ultimate peril either to mind or body. In some instances the diagnosis is perfectly easy : in others it is dubious and full of anxiety. Whenever you fail to satisfy your- selves completely as to the nature of a given case, you will do well, in legal phrase, to give your patient the benefit of your doubt, and acquit her of epilepsy ; or pro- nounce her guilty of the minor offence of hysteria. The points of resemblance, and the points of distinction, belonging to the hys- terical and epileptic paroxysm respectively, have been very clearly summed up by Foville. There are two principal forms of each disorder. In each, one of these forms is convulsive, and the other is not. The non-convulsive form of epilepsy relates exclu- sively to the sensorium : it is characterized by vertigo, and by a suspension (how- ever brief and transitory) of the mental powers. The non-convulsive form of hysteria has little apparent connection with the animal functions : its palpable phenomena consist in derangement of the organic functions of the thorax and abdomen. It is the ganglionic portion of the nervous system that seems chiefly disturbed. In the epileptic j^^ there is an entire loss of consciousness. The patient, oa emerging from the paroxysm, recollects nothing of what has been going on durino- Its continuance. It is not so in the hysterical fit. The loss of consciousness is very seldom complete ; and it never occurs at the outset of the attack. The patient often is able to repeat (though she may not always choose to confess it) what has been said by the bystanders during the period when she seemed insensible. This is a point of distinction well worth remembering, for more reasons than one. It not only helps the diagnosis when the fact comes out ; but it suggests certain cautions to our- selves. VVe must take care not to say any thing by the bed-side of an hysterical patient which we do not wish her to hear ; and we may take advantage of her appa- rent unconsciousness, and pretend to believe in it, and speak of certain modes of treatment which she will not much approve of, but the very mention of which may serve to bring her out of the fit. In the epileptic paroxysm the face is usually livid ; and foam, which is frothy with air, or red with blood, escapes from the patient's mouth. These are symp- toms which we do not see in the fits of hysteria. The convulsive movements even, offer some characteristic shades of distinction. In epilepsy they are often more marked on one side of the body than on the other, and less irregular : the same movements are rapidly repeated: there is a strangling rattle in the breathing: while in hysteria the forcible flexion and extension of the limbs, and the contortions of the trunk, are more sudden, and, as it were, capricious ; the respiration is deep, sighing, mixed with cries, and sobs, and often with laughter. But, perhaps, the con- vulsive motions differ most in the face. The epileptic expression is usually fright- ful ; the eyehds half open, the eyeballs rolling, the mouth drawn to one side, the teeth grinding, the gums exposed by the retraction of the lips, the tongue protruded and bleeding, the complexion leaden : while in hysteria the cheeks are red, but at rest; the eyelids are closed and trembling; if you raise the upper one, you will see the eye fixed, perhaps, but it is bright, and very different from that of the epileptic, which, if it be not rolling, is dull, projecting, and the pupil usually dilated. Foville states that when, besides a sudden loss of consciousness with convulsive movements, there are also lividity of the face, and an escape of frothy saliva from between the hps, and the con'ulsions are more pronounced on the one side of the 416 HYSTERIA. body than on the other, the disease is epilepsy, and not hysteria : and I think he is right. By Dr. Marshall Hall the grand distinction between the two diseases is affirmed to be this : — that in hysteria, much as the larynx may be affected, it is never closed ; in epilepsy, it is closed. Accordingly, in the former we have heaving, sighing, inspiration ; in the latter, violent ineffectual efforts at expiration. In the very outset of the epileptic paroxysm the respiration, I believe, is thus sus- pended. The hysterical seizure may be over in a quarter of an hour, or in less time than that ; or it may last many hours, or even several days. The hysterical seizure is almost peculiar to women : and it seldom occurs in them except during that period of their lives in which the menstrual function of the uterus is or ought to be in activity. In this country it is most apt to occur between the ages of fifteen and forty ; and in the vast majority of patients who do suffer it, you will find some marked derangement of that particular function. These facts alone afford a strong corroboration of the ancient theory, which ascribed the whole of the phenomena to uterine disorder ; and named the disease accordingly. You will hear or read of disputes as to whether the womb, with its appendages, or the nervous system, is the seat of hysteria. But such disputes are merely verbal, I conceive. No doubt the convulsive movements, and the mental affection, and the unnatural sensations, depend upon some altered condition of the brain and nerves ; but it does not follow that the disease originates in that altered condition. We know that the uterus or the ovaries cannot of themselves determine the muscles to contract; but if they be in an unhealthy state they may act upon the muscles through the inedhan of the nervous system : and such I take to be the fact. How they do so we no more know than we know how the little finger is bent when we resolve to bend it. But, say some, we every day meet with diseased conditions of the uterus and ovaries — amenorrhoea, dysmenorrhoea, monorrhagia, even disorganization — without any of these nervous symptoms. True ; and we cannot always fathom the mystery of this. But one thing is certain, that there exists in some persons a much greater readiness to take on the disease, upon the application of the exciting cause, than in others. This predisposition I have had occasion to advert to again and again, since I began to speak of the spasmodic diseases of the nervous system. Such diseases occur in certain individuals only; and in these individuals there pre-exists a pecu- liar condition of the nervous system, "for which," says Dr. Alison, "we have no more precise or definite expression than nervous irritability or mobility; a con- dition which is more common in women and children than in men ; and more com- mon in all persons when in a state of weakness, than when in the full enjoyment of muscular strength ; in women, particularly, more common about the menstrual periods, and immediately after delivery, than at other times ; more common likewise in those in whom the monthly discharge is habitually excessive or altered as in leu- corrhoettt or suddenly suppressed, or more gradually obstructed in the different forms of amenorrhoea, than in others. In this condition of mobility, both sensations and »;motions are intensely felt; and their agency on the body is stronger and more lasting than usual ; continued voluntary efforts of the mind, and steady or sus- tained exertions of the voluntary muscles arc difficult, or impossible; the muscular motions are usually rapid and irregular, and the 'animus, nee sponte, varius et mu- tabilis.' " In persons of this movable temperament, spasmodic complaints are easily excited : and the tendency to their recurrence is increased by each repetition of them. Now the persons who suffer hysteria are of this class. They are commonly young women, in whom the process of menstruation is in some way or other dis- ordered ; and who either are naturally of a feeble constitution, or have been debili- tated by disease, or by their habits of hfe. They often are pale ; have cold hands and feet ; are subject to chilblains ; eat but little, and do not fancy meat, which they sometimes absolutely dislike and refuse ; or their taste is depraved and capricious ♦hey will devour wax candles, wafers, chalk, sealing wax, slate pencil, and such I HYSTERIA. 417 irash. And, what is very curious and cliaracterislic, although they often abstain ahnost entirely from animal food for weeks or months together, and take very little nourishment of any kind, they do not in general emaciate. You might expect that, under such a mode of life, they would waste away : but they continue round, and plump, and smooth. Some of them are even ruddy. And belonging to women of this pecuhar constitution there is one other very re- markable character, which it behoves us to make ourselves thoroughly acquainted with. Almost any part of the nervous system, in these persons, is liable, under the influence of slight causes, and even without any obvious cause, to fall into a disor- dered state of action and suffering more or less resembhng that which inflammation or organic disease might excite in the same part. This is a most important fact ; because if we erroneously ascribe symptoms which really result from inflammation to mere nervous or hysterical disorder, we may suffer the patient to perish for want of active measures that would have saved her: and on the other hand, if we apply to these nervous, imitative, hysteric complaints, the treatment proper for inflammation, we shall generally, indeed, relieve our pa- tient for the time ; but we shall leave her more prone to the nervous affection than before, and permanently damaged by our mischievous activity. [On the subject of the pathology of hysteria the reader is referred to the very judicious paper of Dr. Conolly in the 2d vol. of tlie Cyclopa;dia of Practical Medicine, Philadelphia edition. 562 ct seq. — C] I say that almost every kind of serious disease may be mimicked b}'' what we must call hysteria. And your skill will sometimes be severely tasked to determine the true import of the symptoms, and the real nature of the case. One of the diseases which is most often copied by hysteria, is inflammation of the pcrilonmm. You will find a patient complaining of acute pain of the abdomen, aggravated by the slightest pressure ; and she shall have, perhaps, a hot skin, a quick pulse, and a furred tongue. When you meet with such symptoms in a young female, in whom there is any derangement or irregularity of the uterine functions, you will do well, before you bleed her to syncope, and cover her abdomen with leeches, to ask yourselves whether all this suffering may not be simply ner- vous. Search into her previous history as narrowly as you can ; if you find that she has had similar attacks before ; if she has been known to suffer hysterical fits ; and if the tenderness is excessive, and, as it were, superficial, felt upon the slightest touch as much as when firmer pressure is made, you may generally spare the blood- letting, purge the patient well, and cause an asafcetida enema to be thrown into the rectum ; and in a {^iw hours you will find that the peritonitis has vanished. Among the pains which infest females of the hysteric constitution, and which are apt to be erroneously ascribed to inflammation, stitches and pains in the hypochon- dria are probably the most common. They are oftener complained of in the left hypochondrium than in the right. These things are much more generally under- stood now than they used to be even a few years ago. I cannot tell you how many persons I have seen who had been diligently treated with leeches, and blisters, and blue pill, for supposed chronic inflammation of the liver or spleen, or still more actively depleted lor presumed pleurisy or pericarditis, when no such inflammation existed, and when the treatment, by reducing the strength, tended to rivet that mobility of system which was the chief predisposing cause of the pains. You would scarcely suppose that palsy — perfect hemiplegia or paraplegia — could De simulated by hysteria : yet this certainly is the case; and I have seen instances of it even among hospital patients. They are difficult and perplexing cases. The sudden occurrence of the paralysis, witliout any of the other symptoms which commonly mark the real disease, its sudden disappeamnce, and, above all, the supervention of an hysterical paroxysm, will often disclose the true nature of the affection. Hysterical affections referred to the throat are very common. Aphonia, for exami)le : the voice being lost on a sudden, and returning as suddenly. Mock laryngitis. I remember being a.sked by Sir Charles Bell some years ago to see a young woman in the INIiddlesex Hospital under his care. She had recently arrived, 27 418 HYSTERIA. and was breathing with the stridulous noise peculiar to inflammation of the larynx She had twice before, in the country, had tracheotomy perfornried for similar attacks; and there were the scars of the operations on her neck : but both Sir Charles and myself were satisfied, upon considering all the circumstances of the case, that the difficult inspirations Avere spasmodic and hysterical; and she recovered under the remedies which do good in hysteria. Inability to swallow, dysphagia, is anolhei of the hysterical vagaries relating to the parts about the throat. Dr. Bright has a veiy instructive case of that kind. A patient was sent to Guy's Hospital for stric- ture of the CESophagus. It was stated that the difficulty of deglutition had existed for several weeks, and was increasing. The surgeon under whose care she was admitted was instantly struck by certain circumstances which did not seem to consist very well with the notion that there was organic disease. Her appearance belied it, and her age. But he thought it right to examine the esophagus by means of a probang ; and no sooner was the instrument introduced, than the patient went into an hysterical fit, which was followed immediately by hi'steria in several females in the same ward. The complaint turned out to be nothii g but an hysteric constric- tion, and was soon completely removed. Surgeons are familiar with the " hysterical breast." The mamma becomes painful, tender, enlarges somewhat perhaps. The girl fears that a cancer .is breeding. She communicates her alarm to her friends, and a medical man is consulted. If he happens to be timid and inexperienced, he makes matters infinitely worse by apply- ing leeches and fomentations ; by examining the breast at every visit; and by keeping the patient's attention anxiously fixed upon it. Whereas the treatment ought to be directed to the state of the general system ; and the local uneasiness spoken lightly of, or disregarded. Among the hysteric affections of the air-passages, there is a pecuhar kind of cough which you ought to be acquainted with. It is loud, harsh, dry, more like a bark than a cough. Sometimes it is incessant, sometimes it occurs in paroxysms which, I verily believe, are more annoying to hear than to suffer. Hysterical afl^ections of the diaphragm again are by no means rare. I had a very obstinate case of that sort in one of my hospital patients. She Avould sit in her bed all day long, uttering every eight or ten seconds a loud and most discordant hiccup. And I remember an out-patient, who presented a picture of perfect health, and who came week after week, to be cured of what I could consider nothing but an hysterical eructation : it was continual and distressing, and prevented her from obtaining any employment as a servant. Hysterical vomiting is also frequent, simulating cancer of the stomach. Nay, hysterical hmnatemesis. A romantic girl was for some months under my care in the hospital with that complaint. She vomited such quantities of dark blood, (which did not coagulate, however,) as I would not have believed if I had not seen them. Day after day there were poifuls of this stuff'; yet she did not lose her flesh, and she menstruated regularly ; and what was very curious, the vomiting was always suspended during the menstrual period, and recurred again as soon as the natural discharge ceased. I said she was romantic; but I should rather have said that she had that peculiar mental constitution which belongs to hysterical females. She used to write me long letters of thanks for my attention, though I was heartily tired of her ; and these were couched in all the fine language of the Minerva press At last I sent her away : just as bad as when she came into the hospital. This was five or six years ago ; and last year she called at my house with a present of some game, and told me that she had got married to a hair-dresser, and was quito recovered. There is a kind of sanguineous expectoration belonging to females of this class, and very likely to mislead the unwary. I meet with two or three instances of it every year. The patient excreates daily, or at irregular intervals, a thinnish fluid something like saliva, more or less tinged and streaked with brown or florid blood. A young hand investigates diligendy the source of the bleeding, and puzzles himself to determine whether the case be one of hxmutemesis or of hsemoplysis. Nine times out of ten it is neither the one nor the other. The blood comes from the moutii or ihe fauc('5 HYSTERIA. 419 Hysterical affections of the joints are very common. A young girl became my patient in the hospital for some trifling ailment, and after a short time she began to complain of great pain in her knee and hip ; she could not stand upon the Hmb, nor bear to have it moved or touched. I got Sir Charles Bell to see her : he was so satisfied of the nature of the case — so convinced that it was a genuine example of inflammation and ulceration of the hip-joint — that he gave a httle lecture to the pupils who stood round the bed upon the characteristic position in which the patient lay ; and he took her into one of the surgical wards to be under his own care. Some time afterwards I had occasion to go into that ward, and there I found my former patient with her heel drawn tight up against her buttock. It turned out that she had had no serious disease of the hip at all : both it, and the rigid contraction, gave way under measures which could have done no good to an ulcerated joint. I think the first clue to the real nature of her malady was the occurrence of a fit of hysteria. Sir Benjamin Brodie says, that among the higher classes of society, at least four-fifths of the female patients who are commonly supposed to labour under diseases of the joints, labour under hj^steria, and nothing else. Another prank belonging to hysteria, and one which it is very necessary that you should be on your guard against, is that of mimicking disease of the bones of the spine. The patient complains of pain and tenderness in her back, and of weakness probably in her lower extremities ; and it is now become notorious that scores of young women have been unnecessarily confined for months or years to a horizontal position, and have had their backs seamed with issues, for supposed disease of the bodies of the vertebrae, who had really nothing the matter with them but hj'steria, and who would probably have soon ceased to complain if, instead of being restricted to that unnatural imprisonment and posture, they had taken a daily gallop on horse- back. It is curious enough to notice how the mind is apt to become affected in some of these cases. After the patient has been lying supine for some weeks, she is unable to stand or walk, simply because she thinks she is unable. The instant she makes a fair effort to use her limbs again, she can and does use them. Her condition in at once reversed. Potest quia posse videticr. Mr. Corfe, the present apothecary to the Middlesex Hospital, has no little trouble with patients of this kind ; but he gene- rally succeeds in 7naking them walk, and in convincing them, as well as himself, that they may do so with impunity. Sometimes, though the authority of the doctor may not be efficacious in this respect, some stronger influence prevails. A lady told me not very long ago that an acquaintance of hers, a member of a family of distinc- tion, had been lying I knov/ not how long on her back ; that position having been prescribed to her by some medical man for a presumed disease of the spine. She lost all power of using her legs, but she got quite fat, as, indeed, well she might, for her appetite was remarkably sharp, and she hved chiefly upon chickens ; and the number of chickens she devoured was incredible. She'hved at a little distance from town, and at last Sir Benjamin Brodie was sent for to her. Now Sir Benjamin, to use a vulgar phrase, is up to these cases; and he wished to see her try to walk: but she declared that the attempt to do so would kill her. He was resolute, how- ever, and had her got out of bed : and in a few days' time she was walking about quite well, and very grateful to him for his judicious conduct. A medical man of less name, or of less determination, would probably have failed. Dr. Bright has a good example of a somewhat similar kind ; showing the power of another form of influence. He was asked to see a young lady who had been confined to her bed for nine months. If she attempted to move she was thrown into a paroxysm of agita- tion, and of excruciating agony, affecting more particularly her abdomen. She had almost lost the use of the lower extremities ; and she and her friends seemed to have given up all hope of her restoration. But she presented no appearance of important disease ; her countenance bore no marks of visceral mischief; nor was it possible to discover any proof of organic change. Dr. Bright set the case down in his own mind as one of hysteria. She seemed to have derived relief from some stimulating injection, and from certain pills. As her friends were in moderate circumstances, Dr. Bright talked seriously to the mother, and recommended that simple water should % 420 HYSTERIA. be employed for the injection, and that bread pills should be substituted for those the girl had been taking. The mother soon perceived that these means produced the same tranquillizing effects on her daughter which had hitherto been ascribed to the medicine. "My visits," he says, "became less frequent ; I was absent a fortnight on my renewing my visit, no change had taken place. I attempted to get her shifted gently from the bed to the sofa, but it was impossible ; the paroxysm almost over- came her. Once (after having attended altogether about nine months) I called after an absence of nearly a month ; her sister met me at the street-door with a smiling face to tell me that our patient was quite well : and on inquiry, she related how, ihree mornings before, under a deep religious impression, she had completely reco- vered U.11 her powers ; and I found her sitting up, working and amusing herself as if she were completely convalescent from some ordinary illness." These are the cases which suit the purposes of miracle mongers. A few years ago all the journals belonging to a certain party in the rehgious world were full of an instance of miraculous cure. The patient was a young woman; her legs had been paralytic, or contracted, I forget which ; some enthusiastic preacher had influ- ence enough with her to make her believe that if on a certain day she prayed for recover}'' with a strong faith, her prayer would be successful, she would recover at once ; and she did so. No one can doubt that it was just such a case as those I have now been mentioning. Many of these pseudo-diseases terminate suddenly under some strong moral emotion. A fall — a fire in the house — any overwhelming terror, will sometimes put an end to them. And where the joints have been the parts affected, several patients have declared that they felt a sensation as if something had snapped or given way in the part, immediately before the sudden recovery took place. Some of the shapes assumed by this pathological Proteus are hideous and dis- gusting. Paralysis of the muscular fibres of the bladder, or spasm of its sphincter, sometimes really occurs, sometimes is only aped, in hysteria. It is a common trick with these patients to pretend that they labour under retention of urine; and that, although the bladder is full, they cannot make water. The daily introduction of the catheter by a dresser or apprentice appears to gratify their morbid and prurient feel- ings. Sometimes, no doubt, the difficulty is real ; but it is oftener feigned or exag- gerated. I have again and again known it to disappear upon the patient's being left, without pity, to her own resources. But girls have been known to drink their urine, in order to conceal the fact of their having been obhged and able to void it. The state of mind evinced by many of these hysterical young persons is such as to entitle them to our deepest commiseration. The deceptive appearances displayed in the bodily functions and feelings find their counterpart in the menial. The patients are deceitful, perverse, and obstinate : practising, or attempting to practise, the most aimless and unnatural impositions. They will produce fragments of common gravel, and assert that these were voided with the urine : or they will secrete cinders and stones in the vagina, and pretend to be suffering under some calculous disease. A young woman contrived, in one of our hospitals, to make the surgeons believe that she had stone in the bladder ; and she actually submitted to be placed upon the operating table, and to be tied up in the posture for lithotomy, bei'ore a theatre-full of students ; and then the imposture was detected. Sometimes they simulate sup- pression of urine, and after swallowing what they have passed, vomit it up again, to induce the belief that the secretion has taken place through the new and unnatural channel. it is impossible, I say, not to pity the unhappy victims of this wretched disorder, when their morbid propensities drive them to such acts as these. 1 mention them because you must expect to meet with such cases ; and because, while you take care not to express your suspicions prematurely, or on light evidence, you should be upon your guard against the mortification of being deceived, by the false signals held out, into active and ill-directed measures of treatment. There is another very common hysterical pain which I ought to have mentioned, VIZ., a pain occupying some one point in the head ; the patient speaks of it as a sensaiion like that which would be caused by driving a nail into the part ; and the HYSTERIA. 421 afTection has therefore been called the clavus hysterictis. It is often situated just above one eyebrow ; and it sometimes comes on every day% at the same hour. Now \n these cases it imitates very closely the hemicrania, which constitutes no uncom- mon form of an intermittent, and is called, accordingly, the brow ague. The dis- tinction between the two — whether the affection, I mean, be hysterical or aguish — is not of any great consequence : but in many of the previous examples of hysterical pain mimicking organic or inflammatory disease, the diagnosis is obviously of the greatest moment. How, then, is it to be made ? You may, generally, I believe, be led to a right judgment if you look to the several points that I have incidentally touched already. You may guess that the affection is hysterical if the patient be a young unmarried woman : if there be any disorder or irregularity in the uterine functions ; if you can gather any history of former hysterical disease ; and especially if she is subject to Jits of hysteria. The suspicious symptoms may often be traced back, and found to spread themselves over a considerable previous period of time : yet there is no such wasting, or commensurate deterioration of the general health and strength, as might be expected in organic disease. When the complaint simulated is some acute local inflammation, and there is pain increased upon pressing the part, you will find that the pain is aggravated by the gentlest touch ; it is more felt if you brush your hand over the surface, or slightly pinch the integuments, than when firm pressure is made : and you will find also that this exquisite tenderness is not limited to the part com- plained of. Suppose it is the abdomen, the patient will shrink and exclaim if you suddenly put your finger on her neck, or her arm. The suspicion that the disorder is nervous or hysterical will also be corroborated if the symptoms which resemble the symptoms of inflammation arise and subside rapidly, without obvious cause for such fluctuation ; anJ if various organs appear to be attacked in succession. Be- tween the several symptoms that mark real disease there is always (as we learn by experience) a certain congruity and relation ; but in the simulative displays of hysteria the symptoms are apt to be irregular, inconsistent, contradictory. When, after the most careful investigation of the case, you still doubt, it will be right either 10 pause, or to treat it upon the most tmfavourable supposition. The consequences of suffering active inflammation to go on unchecked would be far worse than the tem- porary and slight and remedial injary to the system which might result from once applying the remedies of inflammation to a case of mere hysteria. There is another hazard also which you must be aware of, and seek to avoid ; that of overlooking real disease, when it is mixed with, and masked by hysterical symptoms. It is not easy to lay down positive rules of action for all these supposable cases ; but I trust that I have said enough to convince you of the importance of making the diagnosis of nysleric complaints a careful object of your future study. I have hitherto spoken of hysteria as if it were exclusively a malady of females. Etymolofrically to apply that teim to the diseases of males would be absurd. But that peculiar modification of the nervous system which is observed in hysteric girls does certainly present itself, though rarely, in young men. I have seen two or three instances of what I could give no other name to than hysteria in males. One of them was in the person of a young surgeon, who had been house-surgeon to the Middlesex Hospital. I believe he applied to not less than a dozen medical men for advice ; and in that batch I happened to have my turn. He had some of the symp- toms that are ascribed to hypochondriasis ; i. e., he was exceedingly attentive to his own sensations, and fancied he had a number of diseases which had no existence but in his own imagination : he showed great unsteadiness and infirmity of purpose; was what is called " very nervous ;" and had occasional bursts of choking, and tears. and laughter, exactly resembling those which we so often witness in the other sex. Many cases of hysteria in the male have been recorded by different writers. The same movable stale of the nervous system, and the same symptoms referable to lAat system, may oxist in both sexes. In females, in nine cases out often, or in a mu^h larger proportion, the exciting cause of the hysteria is connected with the sexual tuuctions ; and that is all that can be meant when it is asserted that, for the female the complaint is not badly named, but has an intimate dependence upon the utenne 2l 422 HYSTERIA. sympathies. At the same time it is quite true that the " uterus is not the only orgar 0? which the irritation niaj^ so affect the nervous system as to produce hysteria." As in epilepsy, so also in h3'steria, the treatment to be adopted regards, first, the paroxysm itself; secondl}^ the condition of the patient during the absence of the paroxysm. One object, during the paroxj'sm, is to prevent the patient from injuring herself, by her hands, or by her teeth, or in her convulsive movements. Her dress should be loosened ; but it may be necessary to confine her hands and arms. The next thing to be aimed at is the putting an end to the fit. Various measures are found more or less useful for that purpose. The patient should be surrounded, as far as that is possible, with cool fresh air. If she is able to swallow, j'ou may sometimes shorten the attack by administering a couple of ounces of the n:iistura assafetida ; oi half a drachm of ether, with fifteen or twentj' minims of laudanum, in camphor julep, or a draught containing a drachm of the ammoniated tincture of valerian. When the patient cannot or will not SAvallow, she may sometimes be brought about by stimulating volatile substances offered to the nostrils. Signal good may also be effected by fetid or stimulant enemata ; the enema assafetida, for example, made by mixing two drachms of assafetida with half a pint of water, by means of the yolk of an es.g ; or the turpentine injection, made in the same manner, and containing half an ounce of turpentine ; or the same quantity of ice-cold water thrown into the rec- tum, or applied to the pudenda, will often bring the fit to a speedy termination. Indeed I believe thq^-e is more virtue in cold water, in hysterical diseases, than in any other single remedy. In the parox5-sm it may be freely and repeatedly sprinkled, or dashed with some force, upon the face and chest. Active purges are beneficial and requisite in almost all these cases. There is coramonl}^ a costive, sometimes an obstinate, and alwa)-s an unnatural, state of the bowels. In those long paroxj^sms — if they may be so called — in which some other disease is simulated by hysteria, the cold afflision is a most valuable resource : especially in those forms of the disorder in which a limb is permanently bent, or incapable of motion. In several instances, in which such contraction had existed for a long time, it has yielded, in the Middlesex Hospital, to a few minutes' application of the cold douche. Mr. Corfe, as I stated before, takes much pains with these cases : he pours cold water from a tea-kettle, or any other convenient vessel, in a small stream, from a moderate height, upon the contracted limb. It has been bent up for weeks perhaps ; no power that you are able to exert can extend it ; and any very forcible attempts to straighten it give the patient extreme pain. After the stream of water has been kept up for a short time, the patient complains of it very much ; but Mr. Corfe is inflexible — more so than the culprit limb — he goes on. Presentlj" the limb begins to tremble, the tight state of the muscles is evidently on the point of yield- ing, and in no long time they are entirely relaxed and manageable, and the member becomes as lithe and movable as ever. It often happens that the state of contraction recurs ; but a repetition of the douche has always the same good efltct, and by de- grees the habit is broken, and the patient set free. It requires some determination to put this expedient in practice. The patient looks upon j-ou as a monster of cru- elty : and, in private, the friends will not always allow such " rough" treatment, as they consider it. Sir Charles Clarke, who necessarily sees a great number of these cases — they are more common in the upper than the lower classes of society — is a great advocate of this ducking system. A paper of his upon the subject was read before the College of Physicians a few years ago. He recommends a "sudden and lavish" application of water to the face ; or the immersion of the Avhole body. He describes the class of patients, in whom the hysterical affection which is curable by that method occurs, as being generally females of a pasty complexion, fat, pale, and weak ; or such as evince the ordinary signs of debility, a feeble pulse, cold extremi- ues, and purpleness of parts distant from the centre of circulation. The age of the patients varied from ten to thirty years ; in many of them menstruation was imper- fect, or absent. * A medical practitioner whom I met lately at a patient's house, told me he had just come from another patient, upon whom he had seen a surprising cure performed. HYSTERIA. 423 A young lady, for many days, had been affected with trismus. She was unable to open her jaws, and therefore could neither speak nor eat. At last Sir C. Clarke was called in to see her. He presently comprehended the nature of her ailment, Had her placed with her head hanging over a tub by the side of the bed : and pro- ceeded to pour pitchers of cold water on her face. Before he had emptied the second the patient began to scream and complain, giving very audible indications that she could open her mouth. I say although these patients get great relief by the treatment, they do not like it ; and if they are convinced that it will be put in force, they will generally contrive not to require it. Of all the spasmodic affections, hysteria is that which is most readily propagable by what may be called moral contagion. If, in a large ward, one girl goes off in a fit, half a dozen others perhaps, all who happen to possess the hysteric diathesis, will experience a strong inclination to follow her example. But this chorus, as it were, of hysteria, is much more common in some wards than in others. A stern nurse, or a general order that the cold affusion shall at once be employed in every instance of an hysterical fit, will keep the complaint wonderfully in check: and on the other hand, great sympathy with such patients has a striking effect in encouraging the paroxj'sms. These facts show that the symptoms are, to a certain degree, under the patient's control. The fits are not wholly wilful ; neither are they wholly uncon- querable. I have but little to say respecting the medical management of such patients in the intervals between the paroxysms. The objects to be aimed at are, to restore the nervous system to the requisite degree of stability : and to correct the disordered functions of the uterine system. Now much the same plan of treatment is applica- ble to both these objects ; and I spoke of the remedies that are found most beneficial for giving tone and firmness to the system, when I was upon the subject of epilepsy, and other nervous spasmodic ailments. The following points must be kept in view. The regulation of the bowels, which are mostly sluggish, by aloetic aperients ; the exhibition of some form or other of steel ; the steady employment of the shower bath ; regulated exercise, both on foot and on horseback; the avoidance of hot rooms and of late hours, both in respect to going to bed, and to rising from it ; the avoidance also of strong moral emotions, of novel-reading, and of all the other thousand modes of dissipation, mental and bodily, which always accompany, and abate the blessings of, a high state of civilization. Marriage often proves a cure : sometimes it does not. The disposition to hysterical disorder may be more easily prevented than cured ; but upon this point medical men are not consulted. Parents do not foresee the misery they are often laying up for their daughters by the unnatural mode of hfe to which they are subjected for the sake of filling them with fashionable accomplish- ments. I cannot close this subject, and this lecture, better than by quoting Sir Ben- jamin Brodie's remarks on the same point, as I find them in a little work recently published by him, and containing many highly valuable observations and instruc- tions in respect to local hysterical affections. " You can render (he sa3''s) no more essential service to the more affluent classes of society, than by availing yourselves of every opportunity of explaining to those among them who are parents, how much the ordinar}' system of education tends to engender the disposition to these diseases among their female children. If you would go further, so as to make them understand in what their error consists, what they ought to do, and what the}' ought to leave undone, you need only point out the dif- ference between the plans usually pursued in the bringing up of the two sexes. The boys are sent at an early age to school, where a large portion of their time is passed in taking exercise in the open air; while their sisters are confined to heated rooms, taking little exercise out of doors, and often none at all, except in a car- riage. Then, for the most part, the latter spend much more of their time in actual study than the former. The mind is over-educated at the expense of the physical structure: and after all with little advantage to the mind itself: for who can doubc that the principal object of this part of education ought to be, not so much to fill the mind with knowledge, as to train it to a right exercise of its intellectual and 424 CATALEPSY. moral faculties ; or that, other things being the same, this is more easily accom ll plished in those whose animal functions are preserved in a healthy state, than it is in others." LECTURE XXXIX. Catalepsy. Ecstasy. Neuralgia: Tic Douloureux; Sciatica; Hemicrania There are yet some strange forms of nervous disorder which require to be men- tioned ; but upon which I do not intend to (hcell. Catalepsy is one of these ; and what is called ecstasy another. These affections are very rare as well as very W07i- derful : so wonderful and rare, that weak and superstitious persons have referred them to the interposition of supernatural agents in human affairs ; and stronger minded persons, who happen never to have witnessed such diseases, deny their oc- currence as fabulous, or laugh at them as the tricks and cheatings of imposture. They certainly do happen, however ; and they happen mostly in the same class of persons in whom hysterical and nervous complaints of all kinds are most common They often appear to be produced by similar causes with these ; they resemble hys- teria in being seldom attended with any danger to life : their pathology is, if possible, still more obscure than that of hysteria : and if I were to speak of the treatment which would seem to be most suitable for their cure or prevention, I should merely have to repeat what 1 said upon the treatment and prevention of hysteria, in yester- day's lecture. I shall content myself, therefore, with a short description of these Uvo affections, that you may be aware of their characteristic phenomena, and not be taken by surprise in case either of them should occur to you in your practice. A fit of catalepsy implies a sudden suspension of thought, of sensibility, and of voluntary motion : the patient remaining, during the paroxysm, in the position in which she (for it is almost always a female) happened to be at the instant of the attack, or in the position in which she may be placed during its continuance ; and all this without any notable affection of the functions of organic life. This is certainly a very curious state, and one different from any that we have yet contemplated. We have had the muscles rigidly contracted with tonic spasm, while the powers of the mind, and the sensibility of the body, were unimpaired. ^Ve have had the same muscles shaken with clonic convulsions; both with and without coexistent disorder of the intellectual functions. But here we have a ne'n phenomenon ; the mental faculties are in abeyance, and the sensibility is abohshed, and so also is the function of voluntary motion ; but the limbs are not tied down b} spasm; nor agitated by successive contraction and relaxation of their muscles; noi yet left, like portions of dead matter, passively obedient to the laws of gravity : thej assume any posture, however absurd, however (to all appearance) inconvenieni and fatiguing, and that posture they retain, until some new force from without is ap- plied to them, or until the paroxysm is at an end. The patient so affected, with open staring eyes often, and outstretched limbs, looks like a waxen figure ; or an manimate statue ; or a frozen corpse. Indeed, Hoffman seems to have formed the strange conclusion that, as catalepsy, so far as he knew, occurred most frequently in winter, it must depend on congelation of the nervous fluid. 'J'liese singular attacks occur in paroxj'sms ; and they have been known to alter- nate with well-marked hysteria; and to take place in connection with insanity. 1 have never seen an instance of perfect catalepsy ; which I now regret, as I once had an oii})oriunity of doing so of which I did not avail myself. Dr. Gooch has described a ciise of it, as he witnessed the disease in a patient who suffered puerperal mania. She had long been subject to the common forms of hysteria. This is iUustrative of wnat 1 have often stated respecting the consanguinity of these nervous disorders. It had become necessary to confine this patient in a strait- waistcoat ; she was at- tended by Dr. GJooch and Dr. Sutherland. I will quote Dr. Gooch's account of the ECSTASY. 425 cataleptic state ; for it is authentic and modern. He says, " A few days after our first visit we were summoned to observe a reriiarkable change in her symptoms : the attendants said she Avas dying, or in a trance. She was lying in bed, motionless, and apparently senseless. It had been said that the pupils were dilated, and mo- tionless, and some apprehensions of effusion on the brain had been entertained : but on coming to examine them closely, it was found that they readily contracted when the light fell upon them ; her eyes were open, but no rising of the chest, no move- ments of the nostrils, no appearance of respiration, could be seen; the only signs of life were her warmth and pulse ; the latter was, as we had hitherto observed it, weak, and about 120." " The trunk of the body was now lifted, so as to form rather an obtuse angle with the Hmbs (a most uncomfortable posture), and there left with nothing to support it ; there she continued sitting while we were asking questions and conversing ; so that many minutes must have passed. One arm was now raised, then the other ; and where they were left, there they remained. It was now a curious sight to see her, silting up in bed, her eyes open, staring hfelesslj^, her arms outstretched, yet without any visible sign of animation. She was very thin and pallid, and looked like a corpse that had been propped up, and had stiffened in this attitude. We now took her out of bed, placed her upright, and endeavoured to rouse her by calhng loudly in her ears ; but in vain. She stood up, but as inanimate as a statue. The slightest push put her off her balance. No exertion was made to regain it. She would have fallen if I had not caught her." " She went into this state three several times. The first time it lasted fourteen hours, the second time twelve hours, and the third time nine hours ; with waking intervals of two days after the first fit, and one day after the second. After this the disease resumed the ordinary form of melancholia ; and three months from the time of her delivery she was well enough to resume her domestic duties." There is a minor form of this affection described, in which the patient is incapa- ble of moving or speaking, but is conscious of all that goes on around him at the time. I saw a lady last year, who was subject to these attacks of imperfect catalepsy ; which have been whimsically, but very expressively, called also attacks of daymare. From her time of life, her habits, and some other points in the history of the diseasse, I concluded that in her case these seizures of temporary loss of muscular power without loss of consciousness were dependent upon a diseased state of the blood- vessels of the brain. She afterwards consulted Dr. Chambers ; and he told me that he had formed the same opinion of the nature and cause of the symptoms. In what is called ecstasy, the state is different. The patient is lost to all external impressions ; but wrapt and absorbed in some object of the imagination. The muscles are sometimes relaxed ; sometimes rigid as in slight tetanus : but the loss of volun- tary power over them is not complete or universal, for these patients often speak in a very earnest manner, or sing. They are, as the term ixataai^ imports, out of the body at the time, wholly engrossed in some high contemplation. This state is not uncommon as forming a part of religious insanity : and sometintres it runs into ordi- nary hysteria. Nervous and susceptible persons are apt to be thrown into these trances under the influence of animal magnetism : and grave authors assure us that the intelligence which then deserts the brain concentrates itself in the epigastrium; or at the tips of the fingers : that people in that state read letters which are placed upon their stomach, or applied to the soles of their feet; answer oracularly, enig- matical questions ; describe exactly their own internal organic diseases ; and even foretell future events. Credat Judccus Appella, Non ego. I take for granted that they who were in the habit of speaking, a few years since, in some of our places of worship, in what they called unknown tongues, were either gross impostors, who deserved to be publicly w'hipped, or persons labouring under this disease, and want- ing physic. Dr. Copland mentions a curious fact in connection with this subject. He says that many of the Italian Improvisator! are in possession of their peculiar faculty only while they are in a state of ecstatic trance ; and that few of them enjoy good health, or consider their gift as otherwise than something morbid. I repeat that I can add nothing respecting the pathology or llie managemens of ^l2 426 NEURALGIA. these diseases, to what I have already said in reference to the whole class to which they belong. Leavinfj these nervous disorders, in which the function of voluntary motion is so curiously modified ; and in which there sometimes is no alte^ration of the intellectual faculties, and sometimes very great disturbance, or the complete suspension of them : I would beg to turn your attention to another class of complaints, in which the nerv- ous system is still the part principally interested, but in which the deviation from the natural state is manifested chiefly in the function of sensation ; the powers of thought and of voluntary motion, being scarcely affected, or not affected at all. Com- plaints, I mean, in which the sensibility is perverted, and augmented ; cases of nerv- ous pain. We have considered before that modification of sensation which consists in numbness, or anaesthesia, i. e., in the diminution of the natural sensibility, or its total privation. We have noticed also incidentally many perversions of sensation ; such as giddiness, nausea, faintness, and the hke ; and in the same incidental way the morbid exaltation of the sensibility which is called pain, has come before us, as a symptom of various other diseases ; of inflammation, and of hysteria. But there are diseases which consist of pain, and of nothing else, that we can perceive. They are often attended bj' no inflammation, no detectable change of structure in the pain- ful part, no fever. These affections are included under the general term, neuralgia. Now pain is one of the things which we are oftenest consulted about ; and these neuralgic pains are apt to be excessively severe and troublesome ; and it cannot but be of importance to understand what has been ascertained of their nature, and causes, and capability of cure. That pain is owing to some morbid condition, or to some irritation of a particular nerve, we may sometimes know, by finding that it occupies exactly the course, and follows the distribution of that nerve. But when, as often happens, the pain is con- fined to a certain spot, we then conclude it is neuralgic, if and because we can find no other explanation of its existence. What increases the difficulty of making out the cause and origin of these nervous pains, is that they may be produced by some source of irritation situated at a dis- tance from the part in which the pain is felt. It may be placed in the brain itself, or in the spinal cord ; or in the trunk of the nerve that supplies the aflected part ; or in one of the branches of the same trunk, which branch is distributed to another part. If you strike the inside of the elbow in a certain way, so that the blow lights upon the ulnar nerve, a peculiar tingling sensation is felt in the little finger ; that is, not in the part struck, but in the sentient extremity of the same nerve ; and the same thing happens continually in disease. There is an excellent paper on this subject, by Sir Benjamin Brodie, published in one of the earlier volumes of the Medical Gazette, in which he has collected numerous and striking illustrations of the pro- duction of nervous pain by irritation situated in a distant part. Thus, to take a case in point ; a man was admitted into St. George's Hospital on account of severe pain on the inner side of his knee. The joint was carefully examined, but no mark of disease could be detected in it. On tracing the hnib upwards, however, an aneurism of the femoral artery, as big as an orange, was discovered in the thigh. This nhe patient thought nothing of; his only concern was the pain in his knee. Sir E. Honr^e performed the usual operation for aneurism: and the moment the ligature was drawn firmly round the artery in the upper part of the thigh, the tumour ceased to pulsate, and the pain in the knee ceased also. This man died four or five days after the operation : and upon inspection of the limb afier his death, the aneurism was found reduced to one-half its former size ; and some branches of the anterior crural nerve, which passed over it, and which musi have been kept on the stretch previously to the operation, were seen to terminate in the part to which the pain had been referred on the inside of the knee. There is just such another case related by Dr. Denmark, in the Medico-CJdrurgical JVansaclions. A sailor was wounded by a musket-ball in the arm. The wound healed ; but the patient remained affected w'ith agonizing pain, beginning in the extremities of the thumb and fingers, except the little fii-ger, and extending up the fore-arm. His sufferings were so great that he willingly sub- NEURALGIA. 427 /I milled to have the limb amputated : and the operation gave him complete and imme- diaie relief. AVhen the amputated limb was dissected, a small portion of lead which seemed to have been detached from the ball when it struck against the bone, was found imbedded in the fibres of the median nerve. These examples teach us, when we receive complaints of pain in any part, and can discover no cause of pain in the part itself, to look for some possible source ot irritation in the trunk of the nerve, from which the part in question is supplied with nervous librils. But the source of irritation may be further back than this : it may depend upon a diseased stale of the spinal marrow, or of the brain. Of this we have had so many examples before us already, that I need not seek for any new illustrations of it. Sometimes, again, irritation applied in the course, or at the extremity of one branch of a nerve, will give rise to pain at the extremity of another branch of the same nerve. The sensation appears to be reflected, as il were, along the branch which is not, direcily, the subject of the irritation. Thus hlaments of the phrenic nerve pene- trate the diaphragm and communicate with the ganglia that lie around the cceliac artery; other hlainents are distributed to some of the muscles about the shoulder; and in this way has been explained the well-known fad, that disease or irritation of the liver is very apt to be accompanied with pain in the shoulder. Thus also we have pain in the glans penis, from irritation of the bladder, produced by a stone there ; ^ain of the thigh and testicle, from irritation of the kidney : pain in the left arm, from disease of the heart : pain in the feet, from stricture and irrita- tion of the urethra. I'here are many pains also, plainly enough connected with irritation of distant parts, although no olher nervous connection can be traced between the parts, except that which is afforded by the nervous centres. In such cases we must suppose that the morbid impression travels to the brain, and then the sensation is referred to the part affected through another nervous channel of communication. Dr. Wollastoa was accustomed to relate the following story of himself. He had eaten some ice- cream after dinner one day ; and his stomach did not seem to be capable of digest- ing it. Some time afterwards, when he had left the dinner table for the drawing room, he found himself rendered lame by a violent pain in one ankle. Suddenly he became sick, the ice-cream was vomited, and instantaneous relief of the pain fol- lowed its ejection from the stomach. " A gentleman (says Sir Benjamin Brodie) awoke in the middle of the night, labouring under a severe pain in one foot. At the same time certain other sensations, to which he was not unaccustomed, indi- cated the existence of an unusual quantity of acid in the stomach. To relieve the latter he swallowed a large dose of alkaline medicine. Immediately on the acid in the stomach having been thus neutralized, the pain in the foot left him." I'he lesson that we learn from all these facts is this : that when we can find no explanation of a pain in the very spot in which it is felt, we should look for some condition that may explain it in the trunk of the nerve supplying that part : or in the pans supplied by oilier branches of the same nerve ; or (if we are still unsuc- cessful), we look for other indications of disease in the brain or spinal marrow : and if these be wanting, we should extend our search, and inquire whether there be any intelligible disorder or cause of irritation elsewhere, which, operating through the medium of the nervous centres, may have occasioned the sympathetic pain of which our patient complains. I say we should institute this search, because, if it be successful, it may teach us on the one hand, that the cause of the pain is fixed and irremediable ; or, on the other, it may enable us by some simple and obvious expedient to cure the pain. But sometimes we shall be quite disappointed in all this seeking. We shall find nothing either in the living patient, or in the dead body, which throws the smallest light upon the cause of the neuralgia. Now with respect to those neuralgic pains, for which we can discover no ade quale cause, either in any diseased structure, or in any morbid action of the blood vessels, there are certair. general facts observable which I wiU mention bcfoie [ 428 NEURALGIA. specify any particular forms of neuralgia. They occur in all parts of the body ; but they are more frequent about the head than in any other part : and next of all, pro- bably, in the abdomen. In the head, or face, the branches of the fifth pair of nerves are verj' frequently the seat of neuralgia ; and to such pain, in that situation, the name of tic douloureux is generally given. The painful affection called hemicru- nia is another example of neuralgia of the head. Certain forms of angina pectoris, and of gastrodynia, seem to belong to the same class of disorders ; and sciatica — which depends on different causes in different cases — is often rather a neuralgic than a rheumatic pain. I have stated that the pains sometimes follow the track of cer- tain nerves ; but this is not, I think, very common. Inflammation of the nerve, or of its investments, generally causes pain having that property : but the truly nervous pains are much better characterized by the suddenness with which they come on, and the suddenness with which they sometimes go off also; by their intermittence in many cases, and the regularity of the period at which they often, though not always, return ; by the total absence (in most cases) of heat and swelling, and often of tenderness too, when they are external, and of febrile symptoms when they are internal, even although their intensity be extreme ; by their apparent dependence, in numerous instances, upon sudden changes of the weather; by their occurring chiefly in persons of a nervous temperament in whom the health is otherwise disor- dered ; and by their frequently abating under tonic remedies, or what are called spe- cifics, rather than under antiphlogistic treatment. (Alison's Outlines.) There is another circumstance, characteristic of these pains, which has been mentioned by Sir Benjamin Brodie, and I do not know that the same thing has been noticed by other writers. These pains are often suspended by sleep. " A person suffering from tic douloureux in the face may for a time be prevented from falling asleep, but if once asleep, his sleep is likely to be sound and uninterrupted for many hours." He says that though there may be exceptions to this rule, they are comparatively rare. Now this, you will observe, is quite analogous to what takes place in certain spasmodic affections of the muscles also. The jactitations of chorea are almost always sus- pended during sleep. It is the same with the spasmodic wry neck, in which the involuntary contraction of some muscle, commonly the sterno-cleido-masloideus, drags the chin round, and the head awry. Persons affected with that sort of deformity when awake, have their necks flexible enough, I beUeve, while they are sleeping. I mentioned just now one character of these neuralgic pains, viz., the total ab- sence in most cases, when they occupy the surface, of heat, redness, swelling, or tenderness ; and I said in most cases, because there are unquestionably exceptions to this. After these pains have been long-continued and intense, they may o-jve rise even to a moderate degree of inflammation of the part; which will become tender to the touch, manifestly vascular, and even swollen a little. " In a gentle- man," mentioned by Sir B. "Brodie, " who suffered for a great length of time what was regarded as a most severe tic douloureux in the face, at first the parts to which the pain was referred retained their natural appearance, but ultimately they be- came swollen, from an effusion of scrum into the cellular texture, and so exqui- sitely tender that they could not bear the slightest touch. In a patient who had laboured for some time under pain in the testicle, depending on a calculus passing down the ureter into the bladder, the testicle became tender and considerably swelled." The attacks of neuralgia may recur at intervals of a few seconds onlj' : or they may take place daily, or every other day : or the)'- may be separated by much longer intervals, regular or irregular. Sometimes there is continual pain, but it is wonder- fully exalted and aggravated by fits. It is described as being sharp, sudden, twinging, fike an electric shock in its momentary duration. Sometimes it is at- tended by a feeling of constriction and cramp, although no muscular contraction accompanies it. I suppose that is one reason why such pain is so often spoken of even by medical men, and almost always by the vulgar, as spasm. AVhenever a patient tells me he has spasms here or there, I am obliged to request that he wih explain himself further. I want to know how he construes spasm ; and nine times TIC DOULOUREUX. 429 out of ten I find that he intends a sudden and sharpish, and generally a transitory aitack of pain: whereas the term spasm really signifies, and ought to be restricted to, involuntary muscular contractions. When a medical man prints a case in which he states that spasms occurred in suc-h or such a part, it is impossible to tell what he means, unless that term is explained by the context. Pray avoid this inexactness. The most common of these neuralgic *pains, as I have said, is that which has been called, xav i^oxf]v, tic douloiireicx, and which is situated in the facial branches of the fifth pair of nerves ; nerves, as you know, of sensation ; and it is usually restricted to one of the three branches that emerge severally to supply the parts in their neigh- bourhood. Sometimes two, sometimes all of them, are implicated. The middle one of these branches, the infra-orbitary, is, I believe, the most commonly affected in the severer forms of the complaint. The torture occasioned by this dreadful malady is sometimes excessive. The sufferers speak of it as anguish that is scarcely endura- ble ; and you see, in their quivering features and restless limbs, that the acute bodily pang is, indeed, hard to bear. When the uppermost branch of the trifacial nerve is the seat of the complaint, the pain generally shoots from the spot where the nerve issues through the superciliary hole ; and it involves the parts adjacent, upon which the fibrils of the nerve are dis- tributed ; the forehead, the brow, the upper lid, sometimes the eyeball itself. The eye is usually closed during the paroxysm, and the skin of the forehead on that side corrugated. The neighbouring arteries throb, and a copious gush of tears takes place. In some instances the eye becomes blood-shotten at each attack ; and when the attacks are frequently repeated, this injection of the conjunctiva may become permanent. When the pain depends upon a morbid condition, or morbid action, of the middle branch of the nerve, it is sometimes quite sudden in its accession, and sometimes comes on rather more gradually ; being preceded by a tickling or pricking sensation of the cheek, and by twitches of the lower eyelid. These symptoms are shortly followed by pain at the infra-orbitary foramen, spreading in severe flashes (so to speak) over the cheek, affecting the lower eyelid, ala nasi, and upper lip, and often terminating abruptly at the mesial line of the face. Sometimes it extends to Ifte teeth, the antrum, the hard and soft palate, and even to the base of the tongue, and induces spasmodic contractions of the neighbouring muscles. When the pain is referable to the inferior or maxillary branch of the fifth pair of nerves, it darts from the mental foramen, radiating to the lips, the alveolary processes, the teeth, the chin, and to the side of the tongue. It often stops exactly at the sym- physis of the chin. Frequently it extends in the other direction to the whole cheek, and to the ear. During the paroxysm the features are liable to be distorted by spas- modic action of the muscles of the face, amounting sometimes to tetanic rigidity, and holding the jaw fixed and immovable. The paroxysms of suffering in this frightful disease are apt to be brought on by apparently trivial causes ; by a slight touch, by a current of air blowing upon the face, by a sudden jar or shake of the bed in which the patient is lying, by a knock at the door, or even by directing the patient's attention to his malady by speaking of it, and asking him questions about it. This was remarkably manifest in a patient who came into the hospital under my care for another complaint ; but who had for some time been subject to tic douloureux. The necessary movements of the face in speaking, or eating, are often sufficient to provoke or renew the paroxysm. At the same time firm pressure made upon the painful part frequently gives relief, and causes a sense of numbness to take the place of the previous agony. This cruel malady occurs most commonly in persons who exhibit, in other re- spects, the signs of an unsound, or deranged, or debilitated system. It is more apt to fasten upon those who are pale, and asthenic, and upon individuals whose powers have been broken by advancing years. It is not unfrequently attended with some obvious disorder of the digestive organs, and ceases or is mitigated when that disor- der is corrected. Sometimes it is clearly connected with a disposition to rheumatic affections ; coming on in persons who suffer rheumatism in other puts, and even 430 TIC DOULOUREUX. alternating with rheumatism in other textures. It is observed to be common among fishermen, and the inhabitants of marshy districts ; and in some of these sufferers it maj- be attributable to their habitual exposure to cold and moisture ; and this nerve, lying superficially, and being unprotected by any artificial covering, is more likely, ]>erhaps, for that reason, to be affected by vicissitudes of temperature ; but in many of these cases the disease seems to be produced by the malaria, which is preA'alent in those situations. The paroxysms are then not only intermittent, but periodical, and they will frequently yield to the remedies which have been ascertained to be specific against ague and its various modifications. Sometimes the facial neuralgia is evidently dependent upon some general state of the system : for it will cease in the face, and fix itself in some other place ; and in this way it may come to occupy several distant parts of the body in succession. There are other cases again in which the disease has a local origin, and results from some diseased bone, or exosto- sis, in the neighbourhood of the painful spot. The late Dr. Pemberton afforded a well-known example of this. He was seized with tic douloureux in the very zenith of his reputation, and when he was in the fullest practice of his profession in this town. It completely ruined him : compelled him to give up business. He ulti- mately died of apoplexy. When his head was examined after death, the os frontia was found to be unusually thick ; and on the falciform process of the dura mater, al a little distance from the crista galli, a small osseous substance was discovered, nearly half an inch long, and almost as broad. Sir Henry Halford has recorded severaJ other instances in which the disease was connected with some morbid condition of the bones of the head or face. Now tic douloureux is one of those complaints for the cure of which there exists a number of specific remedies. But what I have been stating of this disease will suffice to convince you that, as it depends upon different causes and different per- sons, it is absurd to expect that any single drug — or even any one plan of treatment — will always remove it. Our first care, in every e.cample of it that comes before lis, must be to investigate all the particulars of the case. We must not be satisfied with learnmg that the complaint is tic douloureux, and then go on prescribing, one after another, the reputed specifics for tic douloureux. It may happen that the ori- gin of the disease is plain, and the remedy obvious. We must endeavour to make out Avhatever is amiss in the system at large, or in the state of particular functions. Very rarely, I believe, tic douloureux is dependent upon a condition of general ple- thora. Mr. John Scott gives the case of a gentleman who suffered severely from it for some time ; at length he had an uttack of apoplexy, and for this last disorder he was copiously bled, and the bleeding seemed to cure the neuralgia. Much more frequently we find evidence of a feeble or a shattered state of the system ; debility and paleness : and then we may expect to do good by the treatment so strongly recommended by Mr. Hutchinson, viz., by giving the carbonate of iron. This remedy has been put largely to the test, since Mr. Hutchinson wrote in commenda- tion of it, by Dr. Elliotson, and subsequently by others. Dr. Elliotson states it as the result of his experience, that, " in all cases of neuralgia, whether exquisite or not^ unaccompanied by inflammation, or evident existing cause, iron is the best remedy." I have already explained the manner of administering the carbonate of iron, the quantity in which it may be given, and the limits within which I should be inclined to restrict the doses. Sir Benjamin Brodie thinks it probable that the car- bonate of iron proves beneficial by its mechanical operation on the internal surface of the intestines : but I should rather ascribe its good effect to the well-known pro- perty of preparations of iron, to give firmness to the nervous system ; apparently by increasing the quantity of red blood that circulates in it. However, it is of the utmost consequence that the state of the digestive organs should be attended to. Mr. Aber- nethy used to relate, in his lectures, many instances of tic which he had been suc- cessful in curing by measures which were solely directed to the improvement of the stomach and bowels. He had a notion, that in patients who suffer under this disor- der, there were always two functions wrong; those of the nervous system on the one hand, those of the digestive system on the other. And I am sure you will com- monly find mdications of a faulty state of both these systems. " The two," he used TIC DOULOUREUX. 43" to say, " were the common parents of a numerous progeny of very dissimilar local diseases. In tic douloureux, you must seek to put the digestive organs right, or to soothe the nervous system, according as the one or the other may seem to be the principal and primary cause of the disease. Take away one of the parents, and there will be no more propagation." In these cases the unheakhy state of the digestive apparatus may be marked by obvious signs ; a furred tongue, loss of appetite, costive bowels : or it may reveal itself by no other symptom than the pain. It may depend upon the mere presence of acid in the stomach. Dr. Rigby tells us that having suffered in his own person an intense attack of tic douloureux, which opium did not assuage, he swallowed, at the suggestion of a friend, some carbonate of soda dissolved in water. The effect was almost immediate : carbonic acid was eructed, and the pain quickly abated. More often the cause of offence appears to lie in some part of the intestines ; and purgatives do good. Sir Charles Bell — drawing a bow at a venture — achieved the cure of a patient upon whom much previous treatment had been expended in vain, by some pills composed of cathartic extract, croton oil, and galbanum. He mixes one, or two, drops of the oleum tiglii, with a drachm of the compound extract of colo- cynth ; and gives five grains of this mass with ten grains of the compound galbanum pill at bed-time. I mention the exact proportions and dose, because other cases have been since reported, both by Sir Charles and by others, in which the same prescrip- tion was followed by the same success. When the disease occurs in a rheumatic individual, and especially when, as is sometimes the case, it alternates with rheumatism of other tissues, the remedies which have been found useful in rheumatism deserve a fair trial ; guaiacum ; colchicum ; calomel and opium. When all has been done that can be done towards restoring or improving the general health, we may turn our thoughts to local remedies. It is plain that these must be inefficient when the local pain results from constitutional causes that are un- redressed, or perhaps incurable. Yet even then topical measures may soothe the pain for a while. One of these topical expedients, which promised well when first thought of, is the division of the trunk of the painful nerve, so as to cut off the nervous communica- tion, through that main channel at least, between the painful part and the brain. This was originally proposed by Dr. Haighton, and was at first attended with some little success ; but in a great number of instances it has signally failed, as indeed might have been expected. In Dr. Pemberton's case the several branches of the filth pair were cut by Sir Astley Cooper : but in vain. When there is any reason to think that the disease has a constitutional origin, or a local distant origin, the division, or even the excision, of a part of the nerve must be perfectly useless. It would be as reasonable (as Mr. Abernethy has observed) to expect to cure gout by cutting the nerve that goes to the great toe : or to perform castration with the view of remedying that pain in the testicle which is apt to be produced by the passage of a calculus through the ureter. Nevertheless there are cases, in which the division of the nerve, or some other surgical operation, is required. If you can make out that there is any tumour pressing upon or adherent to some part of the nerve — or if some foreign body, as a splinter, or a shot, should be ascertained to be in contact with the surface of the nerve, or to be entangled in its substance, the tumour or the foreign body may be removed by the knife, with the strong expectation that a cure will be llius effected. And if this cannot be done, or if the. nerve itself be altered in struc- ture, either from disease or injury, (I am referring now to neuralgia in general, and not merely to that in which the facial branches of the fifth pair of nerves are impli- cated,) under those circumstances it will become a very proper subject of delibera tion whether the nerve should be divided, or even the limb amputated. In the Medical and Physical Journal there is a case described by Mr. Jeffries, of a violent facial neuralgia, cured by the removal of a small fragment of china, which had been lodging in the cheek for fourteen years. And Mr. Descot mentions an instance in which a very severe affection, of ten years' standing, was removed by the extraction of a carious tooth. I saw, not many days ago, a young woman whoso 432 - TIC DOULOUREUX. fing(?r had been amputated for very acute neuralgic pain which she had suffered m jr.; and the amputation had been successful in liberating her from that pain. Sometimes we may hope to afford relief to the suffering patient by means which tend to remove or lessen the exciting cause of the paroxj^sms. Of this [ may m,en- tion one remarkable example, Avhich fell in part under my own observation : although I had nothing to do with the treatment. I was asked, a few years ago, by a friend, to go with him to call upon a relation of his, who laboured, he said, under tic dou loureux : he did not wish me to see her professionally, but was desirous that I should witness what he considered an extraordinary complaint. I saw a young girl, about twelve or thirteen years old, very pale and dehcate, lying on a sofa ; and I learned from her and from her mother that she was subject to the most excruciating agony in one side of her face and neck. The pain came on whenever she swallowed anything: the act of deglutition proved invariably the exciting cause of the torment. She was at that time under the care of a practitioner who had desired that she might eat mutton-chops three or four times of a day. Of course this was a sentence full of misery to her ; but so desirous was she to get rid of her disease, that she resolved steadit)^ to follow the directions enjoined her. This plan was to be tried for at least a month ; after that time, if she were no better, her mother had resolved to consult another practitioner who had been much recommended to her. I should say that she had already consulted a great number of medical men ; for the malady had existed nearly two years. At the end of the month she was worse than at the beginning; and the new practitioner, Mr. Pennington, was called in. He acted, hke a man of sense and sagacity, upon the fact that the act of swallowing always gave rise to the pain ; and he advised that she should not attempt to swallow for twenty- four hours. That period passed without any return of the pain ; but it immediately recurred upon her eating a morsel of bread. The result of this experiment, how- ever, encouraged him to hope that the morbid habit might be broken through' by a sufficiently long abstinence from swallowing. And as she had been subjected to a great variety of fruitless treatment, he gave her no medicine, but advised that she should refrain altogether from taking food or drink by the mouth. Nourishing injec- tions, composed of beef tea with an egg beat up in it, or of milk, were thrown into the rectum, two or three times a day. This plan was persisted in for a longer time than I should have supposed she could have endured it. No nutriment whatever was taken by the mouth for five weeks and three days, and no paroxysm of pain occurred. At the end of that period the pulse sank suddenly, from between seventy and eighty, to thirty-five beats in a minute ; and thereupon Mr. Pennington thought he had carried his experiment far enough ; and deemed it advisable to administer by the mouth a dessert-spoonful of beef-tea twice a day. This was continued for four days without producing any return of the pain. A small piece of fish was then allowed, and afterwards some chicken ; and proceeding thus cautiously, in the course of a month she was able to eat and drink anything, without the slightest inconve- nience. 1 should state, however, that some time afterwards, the neuralgia returned in another situation, affecting the left knee : and this was remedied by a different mode of treatment. She is since dead. "When other means fail, or in conjunction with other means, local applications to the affected part may be tried. Belladonna will sometimes materially palliate the pain : so will opium : but within the last few years a new anodyne has been brought into use ; and it really seems to have been of essential service in several instances of this most painful disorder. 1 allude to aconitine: the active principle of the monkshood. The property belonging to this plant, of benumbing sensation, has long been know'n. Sir Benjamin Brodie found many years ago that after chewing its leaves, a remarkable numbness of the lips was left, which lasted some hours. We may understand therefore the beneficial operation of the aconitine upon a part of which the sensibility is unduly exalted. It is only very recently that pure aconitine has been procured ; and consequently it has not yet been very extensively employed, and the less so on account of its very high price : but what experience we have of ;t, as a benumber of pain, is highly encouraging. It has been of singular benefit to TIC DOULOUREUX. 433 a surgeon who formerly lived in Charterhouse Square, and whose case is well known, 1 believe, to the profession. Mr. Spry had suffered greatly, for eight years, under very acute neuralgia affecting the parts supplied by the lowermost or mental branch of the fifth pair of nerves. After exhausting almost every expedient that ever has been recommended for tic douloureux, except that of dividing the nerve, he was induced to make trial of the aconitine. It was mixed with cerate, in the proportion of one grain to one drachm, and a small portion of this was smeared over tlie track of the painful nerve once or twice a day for six days. By that time he had entirely lost the pain. He states, I understand, that the appHcation of the ointment produced a sense of numbness, which continued for twelve, or eighteen hours. Dr. Hue, who first told me of Mr. Spry's case, told me at the same time that he knew of two others in which the same apphcation had been equally successful. This encouraged me to try it upon my patient, whom I mentioned before, and who happened at that time to be in the hospital. I bought, for ten shillings, five grains of the aconitine at Mr. Morson's. in Southampton Row, where I knew it would be genuine. One-third of a drachm of ointment, containing one-third of a grain of the alkaloid, was smeared two or three limes a day over my patient's face, and the attacks presently diminished in intensity, and in a few days ceased altogether. He soon after left the hospital, so that I cannot tell whether the cure was permanent. I presume it was so, as he did not return. The particulars of Mr. Spry's case have been published by Mr. Skey in the nineteenth volume of the Medical Gazette. Tt is now (1841) six years since the aconitine was applied, and the pain (as Mr. Skey has recently informed me) has never recurred. It used to be excited by gentle friction of the hand, or by a current of cold air, but Mr. Spry "can now face any wind or temperature with impunity."* In the same paper Mr. Skey relates another instance of the utility of this substance in facial neuralgia. It occurred in one of his patients at St. Bartholomew's Hospital. This is a remedy therefore which is not to be neglected. Even if it only allayed the pain for a time it would be highly valuable. But, judging from the instances now referred to, we may hope that, in some forms of tic douloureux, the aconitine may be found equal to their cure. It seems probable that the recurrence of the pain is sometimes kept up by the influence of habit ; and will cease if the habit can for a while be broken. You must take care, however, to obtain a genuine article. The manufacture of aconitine is difficult, and therefore the cost is considerable. Mr. Skey, in the Bartholomew case, failed with some aconitine that had been imported into this country, but succeeded at once when he employed the same quantity of Mr. Morson's preparation. A few years ago Mr. John Scott published a little book on the disease we are now considering, with the professed object of introducing to general notice a species of local treatment which he had found successful in several long-standing and previously obstinate cases. It is well to be aware of these things, though probably the aconitine ointment will beat Mr. Scott's. Mr. Spry used Mr. Scott's ointment, but withou-t benefit. It consists of the iodide of mercury, mixed with lard, in the propoition of two scruples to the ounce : and it is rubbed into, or placed in contact with, the affected surface, until some degree of irritation is produced. [In several cases of neuralgia, of different parts of the body, w^liich, for a number of years, had resisted a variety of plans of treatment, we have seen almost immediate relief, and in s few, a permanent removal of the disease result from acupuncturation. In other cases, how ever, no benefit has resulted from the operation.. — C] There is a kind of hce-ache, which cannot properly be reckoned as a species o( neuralgia, for it does not occur in short stabbing paroxysms, nor is the pain acute enough to entitle it to the name of tic douloureux ; but which is very common, very distressing, and under ordinary treatment sometimes very intractable. It is called by some a rheumatic pain ; it occupies the lower part of the face, the jaw princi- pally, and the patient cannot tell you exactly whereabouts it is most intense. It is often thought to proceed from toothache, and bad or suspected teeth are extracted. • This gentleman is since dead. 38 2m •134 SCIATICA — HEMI CRANIA. but with no good effect. Now I allude to this for the sake of saying that some years ago I was instructed by an experienced old apothecary, that this face-ache might be almost always and speedil)' cured by the muriate of ammonia; — a medicine that we seldom give internally here, although it so much used in Germany. And I have again and aeain availed myself of this hint, and been much thanked by the patients for the good I did them with this muriate of ammonia. It does not always succeed ; but it often does. It should be given in half-drachm doses, dissolved in water, or in almost any vehicle, three or four times a-day. if the pain does not yield after four doses, you may cease to expect any benefit from it. In two or three instances of a similar kind that I have recentlj^ had to treat, I have found the iodide of potassium, in doses of five or six grains, work a speedy and permanent cure. This induces me to suppose that the pain in some of these cases is periosteal. I so judge from the ascertained efficacy of the iodide in other periosteal affections attended with pain. Tic douloureux is the principal form of severe neuralgia which you may expect to meet with, in regard to acuteness of suffering and difficulty of cure. Two other forms, more common, and luckily more tractable, are generally spoken of under the same head : sciatica, namely, and hcmicrania. I have very little to say, in this place, of either of these. Sciatica, or pain radiating from the sciatic notch, and fol- lowing the course of the sciatic nerve, is sometimes an inflammatory complaint, and yields to the remedies of inflammation — bleeding and Mistering : sometimes it is plainly a part of rheumatism ; and then may often be relieved by calomel and opium, or by colchicum : sometimes, again, it results from irritation within the pelvis, affect- ing the nerve before it emerges externally ; this irritation may be connected with a disordered state of the kidney, and I suspect that it is in such cases that the oil of turpentine is of so much use : lastly, it is sometimes a purely nervous and neuralgic pain : and then the treatment applicable to facial neuralgia will, mutatis mutandis, be applicable to it. I had some time ago a butler under my care at tne hospital, whom I am afraid I did not manage well. He suffered severe sciatica, and I had him cupped and blistered, and gave him a variety of medicines, for some time, to httle purpose : at last he got what I ought, I suppose, to have given him at first, viz., the carbonate of iron, and was presently well. Hemicrania is simply headache, confined to one side, and occupying generally the brow and forehead, but sometimes aflecting very exactly one moiety of the head. It is the migraine of the French, the megrim of our vernacular language ; each of these terms being obviously traceable to the same Greek root. It is often attended with sickness ; and in many instances it is periodical, coming on every day at a certain hour, lasting a certain time, and then subsiding. Like the other forms of neuralgia, hemicrania may be produced by various causes, which are, however, almost all of them such as tend to debilitate the system : it sometimes occurs in con- nection with hysteria ; sometimes it plagues women who have suckled their infanta too long; sometimes it acknowledfres the same cause as ague ; and sometimes also it occurs Independently of all other disease, and when no obvious exciting cause can be traced. Whatever may be its origin, it is usually a very manageable complaint. When it is associated with evident antemia, steel and the shower-bath may be expected to cure it. When its visits are strictly periodical, it will yield to quina. Arsenic is considered by many to have a specific power over the complaint ; and I believe that four or six drops of the liquor arsenicalis, given three or four times a day, with due attention to the state of the bowels, will be almost sure to remove hemicrania in nine castas out of ten in which it occurs. But steel or bark, being milder and safer drugs, are, casteris paribus, to be preferred. I say this disorder often acknowledges the same cai(se as ague; namely, the miasm of marshes, or malaria : and as that cause, mysterious as it is in some respects, ".xerts apparently its primary or chief influence upon the nervous system, and as rtgue has no definite seat in the human body, if it be not in the nervous system, I shall not find a more convenient place in these lectures for the consideration of ague INTERMITTENT FEVER. 435 than here, at the close of the remarks which I had to make respecting the diseases of the brain and nerves. In the next lecture, then, I shall begin to speak of Inter- mittent Fever. LECTURE XL. Intermittent Fever. Phenomena of an Ague Fit. Species and varieties of Inter- mittents. Predisposing causes. Exciting cause. Malaria ; known only by its effects ; places which it chiefly infests ; conditions of its production ; its ejects vpon the human body; injiuence of soils in evolving it. I AM now to enter upon the consideration of that disorder of which the trivial English name is ague, and which is called by nosologists intermittent fever. This is one of the diseases which are known to us only in their respective group of symp- toms. Before we can inquire successfully into its history, it is necessary that we have the group of symptoms which identify it set fairly before us. I must, there- fore, describe the phenomena of ague. You will observe that ague resembles several other maladies that essentially belong to the nervous system, in being paroxysmal. A certain series of symptoms occurs, and then the patient reverts to a state of health : but this alternation com- monly happens (or would happen if the disease were left to itself) a great many times. You may therefore look upon this succession of attacks as so many repe- titions of a short distemper; or you may regard the whole period during which the attacks continue to recur at brief intervals, as being occupied with one single disease. An ague fit is composed of three distinct stages ; and they are severally named, from the phenomena that characterize them, the cold, the hot, and the sweating stages. A person who is on the brink of a paroxysm of ague, experiences a sensation of debility and distress about his epigastrium ; becomes weak, languid, listless, and unable to make any bodily or mental exertion. He begins to sigh, and yawn, and sireich himself; and he sooa feels chilly, particularly in the back along the course of the spine ; the blood deserts the superficial capillaries ; he grows pale, his fea- tures shrink, and his skin is rendered dry and rough, drawn up into httle promi- nences, such as may at any time be produced by exposure to external cold, and presenting an appearance somewhat hke the skin of a plucked goose : hence it is called goose's skin, and in Latin cutis anserina. Presently the slight and fleeting sensation of cold, first felt creeping along the back, becomes more decided and more general ; the patient yee/s very cold, and he acts and looks just as a man does who is exposed to intense cold, and subdued by it; he trembles and shivers all over; his teeth chatter, sometimes so violently that such as were loose have been shaken out ; his knees knock together ; his hair bristles shghtly from the constricted state of the integuments of the scalp ; his face, lips, ears, and nails turn blue ; rings which be- fore fitted Closely to his fingers become loose ; his respiration is quick and anxious ; his pulse frequent sometimes, but feeble ; and he complains of pains in his head, back, and loins : all the secretions are usually diminished ; he may make water often, though g(^nerally he voids but httle, and it is pale and aqueous ; his bowels are confined, and his tongue is dry and white. After this state of general distress has lasted for a certain time, it is succeeded by another of quite an opposite kind. The cold shivering begins to alternate with flushes of heat, which usually commence about the face and neck. By degrees the coldness ceases entirely ; the skin recovers its natural colour and smoothness ; the collapsed features and shrunken extremities resume their ordinary condition and bulk. But the reaction does not stop here ; it goes beyond the hedlthy line. The face becomes red and turgid ; the general surface hot and pungent and dry ; the templos 436 INTERMITTENT FEVER. throb; a new kind of head-ache is induced ; the pube becomes full and strong, as well as rapid ; the breathing is again deep, but oppressed ; the urine is still scanty, but it is now high-coloured ; the patient is exceedingly uncomfortable and restless. At length another change comes over him : the skin, which, from being pale and rough had become hot and level, but harsh, now recovers its natural softness ; a moisture appears on the forehead and face ; presently a copious and universal sweat breaks forth, with great relief to the feelings of the patient ; the thirst ceases ; the tongue becomes moist ; the urine plentiful but turbid ; the pulse regains its natural force and frequency ; the pains depart ; and by and by the sweating also terminates, and the patient is again as well, or nearly as well, as ever. This is surely a very remarkable sequence of phenomena : and it would appear still more remarkable if it were less familiar to us. The earlier symptoms are all indicative of debility, and of a depressed state of the nervous system. There is the same sensation of exhaustion, with incapacity of exertion, which is produced by fatigue. The sighing, yawning, and stretching, all notify debihty. The paleness of the surface, and constriction of the skin, and collapse of the features, are all owing to the retirement of the blood from the superficial capillaries. The skin shrinks, but the parts containing the bulbs of the hairs cannot contract so much as the other parts, and therefore the surface becomes rough, and the hairs bristle up, or become erected in some degree. HorrlpUatio is the learned term for this state of the surface. The coldness of the skin is another consequence of the emptiness of its blood- vessels ; and the tremors which are always indicative of debility, seem to depend upon the coldness. The chattering of the jaws has been (it is said) so violent as to fracture the teeth. This you may believe or not as you please, but certainly the whole bed is often strongly shaken by the shivering of the patient. The necessary accumulation of the blood in the larger and internal vessels offers a reasonable expla- nation of the distressed and anxious breathing. In their attempts to render a " ratio symptomatum," authors have sometimes spoken of the hot stage as though it were a necessary consequence of the cold. But if the cold fit be in any sense or degree the cause of the hot fit, it can only be so partially. There must be some other cause for these reasons. The cold stage may occur and never be followed by the hot ; or the hot stage may come on without any previous cold stage ; and when they do both happen, they are not by any means proportioned to each other. When we thus see that a supposed cause is not always followed by the effect, and that the effect is sometimes produced without the agency of the sup- posed cause, and also that the supposed cause and the effect are not proportioned to each other, we cannot but conclude that the supposed cause is at most but a partial and accessory cause. We can more easily conceive how the hot fit may conduce to bring on the sweating stage. The stronger action of the heart and the more forci- ble propulsion of the blood will fill the superficial vessels, and in this way the natural secretions may be restored. We see exactly the same thing happen when the force of the circulation is increased by exercise : the extreme vessels receive a larger sup- ply of blood, and sweat ensues. There are many curious facts to be observed in respect to the paroxysm of an intermittent, such as it has been now, in general terms, described. In the first place the paroxysm returns. Cullen makes this a part of his definition ; and quibbling objections to his statement have been made, which are scarcely deserving of men- tion. Thus it is said that this circumstance should not have been introduced into the definition, because it is not necessarily or iiuivcrsalh/ true ; that the patient may die in the very first paroxysm ; or that he may be cured by the proper remedies of ague, before a second paroxysm has time to show itself. But all this is captious tri- fling. The paroxysms, if the disease be left to itself, will recur for a certain length of time ; and, unlike the paroxysms in many of the spasmodic diseases which we have lately been speaking of, they recur at regular periods, and often with singular punctuality. This is a circumstance which we should waste our time in attempting to account for. Dr. Cullen has tried to explain it on the principle of some diurnal habit of thfe body ; but the truth is, that no satisfactory explanation of it has ever INTERMITTENT FEVER. 437 been given, and we must be content, for the present at least, to receive it as an ulti- mate fact ; and, doubtless, a very strange and interesting fact For distinguishing some equally curious varieties of these successions and alterna- tions of disorder and health, certain terms have, by common consent, been adopted by pathologists ; which terms it is necessary that I should explain. The period that elapses between the termination of one paroxys.a and the commencement of the next is called an intermission ; while the period that intervenes between the begin- ning of one paroxysm and the beginning of the next, is called an interval. As the paroxysms are liable to vary in length, the intermissions may be very unequal, even when the intervals are the same. When the intermissions are perfect and complete, the patient resuming the appearance and sensations of health, the disorder is an in- termittent fever. When the intermissions are imperfect, the patient remaining ill and feverish, and uncomfortable in a less degree than during the paroxysm, tlien the complaint is said to be a remittent fever. But, confining ourselves for the present to intermittents, it is another curious pro- perty of this complaint that, although the intervals are commonly constant in each case, and quite regular, they differ in duration in different cases. Upon this circum- stance is founded a division of agues into species. When the paroxysm occurs at the same hour every day, the patient is said to have quotidian ague. When it comes on at the same hour every other day, appearing and remaining absent day by day alternately, he is said to labour under tertian ague. The paroxysm, strictly speaking, repeats itself every second day : and if the species I first mentioned be fitly termed quotidian, that in which the fits occur on alternate days ought to be styled seciindan. But nosologists have chosen to reckon the day on which the pre- ceding fit happens as the first : and then the day on which the fit next to it will hap- pen, in the species now under consideration, is the third. In the same way, when a paroxysm absents itself for two whole days, and then recurs, the complaint is called a quartan ague. These are the three principal species or types of intermit- tent fever. It follows, of course, from wnat I have been stating, that in the quoti- dian type, the interval is twenty-four hours ; in the tertian, forty-eight ; and in the quartan, seventy-two. Each of these types has some other characters peculiar to itself. Thus, the parox- ysms of the quotidian ague begin in the morning; those of the tertian, at noon; those of the quartan, in the afternoon. These are the rides. You are not to expect to find them always or rigidly observed ; for the most part you will find that they are observed. It is probable that quotidian paroxysms, occurring at noon or at night, have sometimes been ascribed to ague, when they were merely symptoms of some local disease or inflammation ; or perhaps accessions of hectic fever. It is observed also of the paroxysms, that when the disease is about to yield, they often occur later day after daj% before they take their final departure. This is caWedi postponing : and when they occur earlier than their stated hour, the paroxysms are said to antici- pate. Now a postponing quotidian may be deferred till noon. But when the dis- ease is pursuing its regular undisturbed course, the rule is such as I have men- tioned. The' three principal types differ from each other, not only in their respective inter- vals, and in the periods of the day at which the paroxysms severally commence, but also in the duration of the paroxysms ; and in the proportions which the stages of these paroxysms bear to each other. The average duration of the paroxysm in the quotidian is ten or twelve hours; and of course the average duration of the intermis- sion is nearly the same. The tertian paroxysm commonly begins at noon, and is finished the same evening ; its average duration may be estimated at six or eight hours. And that of the quartan does not exceed four or six hours. You must observe, also, that while the quartan has the longest interval and thu shortest paroxysm, it has the longest cold stage ; whereas the quotidian has the shortest interval and the shortest cold stage, but the longest paroxysm. To express these facts in mathematical language, the length of the paroxysm varies inversely as the length of the cold stage ; inversely also as the length of the interval. Of these three principal types or species, the tertian is by much the most com- 2m2 138 INTERMITTENT FEVER. mon : but the quotidian and quartan are neither of them unfrequent wherever ague is rife. I should tell you that there are other types also spoken of, as quintans and sextans : but they are scarcely worth our attention. It is probable that when they are ob- served (and that is very rarely) they are merely irregular quartans, postponing per- haps for a day or two. They never prevail epidemically. Galen describes one of these ; so does Van Swieten. Boerhaave talks of a septiman, and even octavans are mentioned ; or if you want still more of the marvellous, PHny, the naturalist, infonns us that a certain Improvisatori was in the habit of having a paroxysm once a year, and that exactly on his birth-day ; yet he died at a good old age. There are, however, some curious modifications of the three principal types ; or rather of two of them, the tertian and the quartan. For instance, a paroxysm may occur daily, and yet the ague not be of the quotidian type, but of the tertian. The paroxysm of one day will differ from the paroxysm of the next, but exactly resemble that of the third day ; while the paroxysm of the second day will be like that of the fourth ; and so on alternately. And these diflt;rences will be decidedly marked ; the paroxysms of two consecutive days will come on at different hours, and will differ in duration and severity. This form of ague is called the double tertian. One case of this kind, very distinctly characterized, was some time ago under my care in the hospital. There is another form of double tertian. Two fits will occur on the same day — Monday, for example, one in the morning, the other in the evening; on Tuesday there shall be no fit ; on Wednesday again two ; on Thursday none ; and so on. The Latin nomenclature is more precise than the English in denoting these varia- tions. The form I have last mentioned, in which two dissimilar paroxysms occur every other day, is called tertiana duplicafa, while the other form, in which there is a fit every day, but those on the alternate days resemble each other, is called tertiana duplex. In the same way you may have a double quartan. In that case, a paroxysm occurs on two days in succession, and leaves the third day free ; then it returns on the fourth day as it was on the first, and on the fifth as it was on the second, and leaves the sixth day free hke the third, and so on. This is the quartana duplex. But two fits may happen in one day — say on Monday ; none on Tuesday or Wed- nesday ; and two again on Thursday. This is the quartana duplicata. Nay, the paroxysm of quartan ague may recur every day, and so far resemble a quotidian; but the fit of the first day will differ from those of the second and third, and resemble that of the fourth : the fit of the second day will be dissimilar from that of the first or that of the third, and like that of the fifth ; and the fit of the third will be unlike that of either of the two preceding days, and find its counterpart in that of the sixth. This is a triple quartan ; and where three paroxysms occur on the first day, which we will again suppose to be Monday, and none on Tuesday or Wednesday, but three again on Thursday, corresponding respectively to the first three, we have the quartana triplicata. And there are other complications still, with which I need not trouble you. In Dr. Cleghorn's book on the diseases of Minorca, you may find a very good and authentic account, evidently drawn from nature, of the irregular types and varieties of ague. They are well worthy of the attention of any among you who may be liktly to practise abroad. Some physicians have used the words doidAe tertian, and so on, in the hteral sense, and have supposed that two or more distinct agues coexisted. This savonrs a good deal of the error that I formerly warned you ajjainst, of looking upon diseases as separate entities, and not merely as modes of being and of acting different fiom those whicr. are proper to the state of health. The vulgar always regard disorders in this light. A coachman by whose side I sat while travelling from Broadstairs to Mar- gate, was speaking of the rarity of ague in that part of the Isle of Thanet. His father, he said, once had the complaint, and when he was on a visit to him, the coachman, at Ramsgate, a fit came on. The son administered to his suffering parent a glass of brandy : whereupon " he threw the agy off his stomach ; and ir looked I INTERMITTENT FEVER. 439 for all the world like a lump of jelly." Thai was the only occasion on which he had ever " aeen the agy." Besides these varieties in type, some other deviations from the normal and regular paroxysms require to be noticed. Sometimes the paroxysm is incomplete : it is shorn of one or more of its stages : the heat and sweating occur without any previous rigors ; or the patient shaken, but has no subsequent heat ; or the sweating stage is the only one of the three that manifests itself. These fragments of a fit are often noticeable when the complaint is about to take its departure ; but they may also occur at other periods of the disease. Sometimes there is no distinct stage at all: but the patient experiences frequent and irregular chiUs, is languid and uneasy, and depressed. This state is commonly known among the inhabitants of our fenny and aguish districts as the dumb ao-ue, or dead ague ; the patient is said not to shake out. Again, there is often observed a tendency to a change of type in the course of the same disease affecting the same person. The quotidian will be transformed into a tertian ; a tertian into a quartan ; or, on the other hand, a quartan into either of these. I have already noticed the fact that the paroxysms will also alter their time of inva- sion, sometimes coming later and later in the day, at each recurrence, sometimes earlier and earlier. When the paroxysm thus postpones, the disease is growing milder : when it anticipates its usual period of attack, the disease is increasing in severity. The postponement or anticipation, therefore, of the fit, has a close relation to the prognosis. There are yet other cases, in which from first to last no determinate type or order of succession is observed by the paroxysms ; and these cases authors speak of as erratic forms of ague. There are also many modifications or complications observable in the symptoms which constitute the fits. Occasionally each paroxysm is attended by violent deli- rium : this is most common, I believe, in the hot stage. This symptom has been known to be almost constant throughout an epidemic. Sometimes the patient is convulsed in the paroxysm; or syncope comes on; or tetanic rigidity; or petechiae lakes place on the skin, and disappear with the paroxysm. These deviations from the common and regular kind and order of the symptoms may sometimes depend upon the constitutional predispositions of the person affected ; but there is another way also in which they may be explained. 1 shall presently have a good deal to say upon the one grand — 1 may say sole — exciting cause of intermittents. Now exposure to that cause, a residence in aguish districts, will sometimes impart a periodic character to other diseases: and I apprehend that this explanation will apply to many of the instances which have been observed of hysterical, tetanic, or other paroxysmal complaints, occurring at perfectly regular intervals. The duration of ague — of the whole disease, and not merely of a separate pa- roxysm — it is not easy to estimate. If persons who laboured under it were always removed at once from the influence of the exciting cause, and were always suffered to remain without treatment calculated to check the malady, we might then find materials for determininn- its average natural duration. But we have not these data. In point of fact, ague sometimes consists of a very few paroxysms only, half a dozen, or four, or three, or even of one fit ; and on the other hand, they may be pro- tracted over a space of several weeks, or months ; nay, of many years. An ague may attack a person at any time ; but they are much more common in spring, and in autumn, than in the otlier seasons of the year: so that you will hear and read a good deal of vernal intermittents, and of autumnal intermittents. The autumnal agues are, cniteris paribus, the more severe and dangerous. The quotidian is most common in the spring; the quartan in the autumn; and the tertian is Av- quenlly met with both as a vernal and as an autumnal ague. You will bi.'ar in mind ihat in all this I am stating the prevailing rules ; which are liable lo "umerous ex- ceptions. Ague is one of those disorders of which (as of common inflammation) ah pensons, at all periods of their existence, seem to be susceptible, when submitted to the influ nee c^ the specific exciting cause. Individuals of all 'igcs, from sucking infants w. 440 INTERMITTENT FEVER. persons of four-score, are liable to it, but they are not equally subject to it. It is less likely {cxteris paribus) to affect the very young, and the aged, than those of middle life. However, the very old are by no means exempt from the operation of the cause of ague : and with respect to the very young, some extremely curious statements have been made. It is said that persons have had ague before they were born. We know that the period of intra-uterine life is obnoxious to many forms of disease ; for we trace the consequences of such disease, in visible changes of struc- ture, immediately after birth. Pulmonary tubercles constitute one malady to which the fcetus in utero is liable: hydrocephalus is another: acute inflammation of the peritoneum a third. And there can be no doubt that various specific poisons influ- ence, occasionally, the included being, even although they may have no sensible effect upon the parent. The fcetus may thus contract small-pox, which sometimes proves fatal to it, sometimes not. The daughter of my bed-maker at Cambridge had a child ill of hooping-cough in the house with her while she was in the last months of pregnanc}'^ ; and the infant in the womb must have caught the disease, for I was assured that he hooped the very day he came into the world. The sins of the parent are thus visited often upon the child, when, before its first breath is draAvn, its frame is contaminated by the virus of syphilis. And in like manner unborn infants are capable of being affected by the poison that produces ague. One case in proof of this is recorded by Dr. Russell, in his History of Aleppo. The woman had tertian ague, Avhich attacked her, of course, every other day: but on the alternate days, when she was well and free, she felt the child shake ; so that they both had tertian ague, only their paroxysms happened on alternate days. Bark was prescribed for her ; and it cured the little one first, and afterwards it cured the mother. One probable reason why ague more commonly affects persons about the middle period of life, than those near its extremes, is that the former are much more likely to be exposed to the primary exciting cause. And the same reason may be given, I presume, for another fact ; viz., that the complaint is much more frequently seen in men than in women. Among the circumstances which predispose to ague, debility has a powerful in- fluence. It is important to be aware of this, as it concerns the prophylaxis, and the management of the patient after the disease has been subdued. Soldiers have been exposed to the exciting cause, Avithout becoming affected by it, while strong and in good health ; and have fallen ill of intermittent fever upon being weakened by ex- ertion and fatigue. When I have told you that debility, any how produced, consti- tutes a predisposition to intermittent fever, I need scarcely add that all the multiform causes of debility may also be regarded as predisposing causes'of this same diease; as they are of so many others. But the strongest predisposing cause of all is an actual occurrence of the disease itself. The effect of former intermittents upon the system is such that the complaint may be reproduced by agencies which under any other circumstances would be quite inoperative in exciting ague. I have stated already my persuasion that, strictly speaking, there is but one exciting cause of intermittent fever: but in making that statement I refer to \\.s first production. The disease leaves the body in a condition in which other injurious influences may, of themselves, be sufficient to renew it. It brings into play a new order of exciting, or rather of re-exciting causes. If a person were never exposed to the malaria, he would never, as I believe, have ague : but having once had ague, he may many times have it again, although he should never again be subjected to the direct influence of the malaria. The late Dr. James Gregory of Edinburgh, had a brother-in-law who illustrated well in his own person the efffcls of predisposing circumstances in respect to ac^ue. This gentleman was a strong, active man, and commanded a battalion in the West Indies ; and he escaped for a long time, while others were falling down around him in remittent fever. At last he was wounded by a musket-ball which passed through his shoulder. He in- sisted, much asxainst the will of the surgeon of the regiment, on resuming his duties oe?ore his strength was completely restored ; snd the consequence was that he was immediately attacked by a remittent fever of such violence, that his hfe was for some; ume despaired of. Bu*: this was not all. The remittent disease assumed by degrees INTERMITTENT FEVER. 441 a distinctly intermittent form, and became a tertian : and at last he got well, and strong, and came over to this country. But for a long while, though to all appear- ance his health was re-established, ague fits would from time to time occur ; and they came precisely at the day and hour on which they would have happened if the tertian had continued with its original type ; and shght causes were sufficient to re- produce them. He had marked in an almanack, the days of the expected accession, and on those days it recurred, for some time, whenever the east wind blew. This very circumstance, the east wind, is a common re-exciting cause in such cases ; ex- posure to cold in any way is another. The exciting cause of intermittent and remittent fevers — the primary exciting cause I mean, that without which ague would never occur at all — deserves a some- what particular consideration. I need scarcely say that it consists in certain invisible effluvia or emanations from the surface of the earth, which were formerly called marsh miasmata, but to which it has, of late years, become fashionable to apply the foreign term malaria. In some respects the latter designation is the more conve- nient of the two. The malaria is a specific poison, producing specific effects upon the human body. In its medical sense, it is not simply bad air, or impure air, although the word is loosely employed by many to express any mixed kind of contamination of the at- mosphere. Thus we hear of the malaria of London : but ague, even when it occurs in London, is very seldom indeed, now-a-days, of London growth. The impure air incident to large and populous cities is prejudicial enough to health, as I formerly took occasion to show you : but it does not generate fever : neither continued fever, nor intermittent. [The author certainly cannot mean to assert, as his language would seem to imply, that no form of fever is generated by " the impure air incident to large and populous cities," but that all fevers are produced by a " specific poison" resulting from other causes than those by which the atmosphere is rendered impure in the crowded, unventilated, and filthy lanes, courts, and alleys, which abound in suburbs of most large cities. That typhus and typhoid, bilious, and yellow fevers are generated in large and populous cities, no one, we presume, will pretend to deny, but of their dependence upon a specific aerial poison we have not as yet been furnished with any satisfactory evidence. — C] The emanations which cause ague have been called marsh miasmata, because they are notoriously common in marshy places. But they are not peculiar to marshy places. For this reason, and for brevity's sake, I prefer using the single word mal- aria. In this country, thank God, we witness its milder evils only, and those not very often ; but it is the bane and scourge of large portions of the world. Whether you practise here or abroad, it is very fit that you should know the qualities, habitats, and habits, of this wide-spread poison. The mildest form of fever to which it gives birth is the intermittent fever, or ague ; but in climates and places where it exists in greater abundance and intensity, the fever becomes remittent, or even assumes the continued form. This has led to strange errors, and proved a fertile source of dif- ference and controversy amongst medical men : not a few of whom confound the severe continued fevers which spring from the malaria, and which are never conta- gious, with the severe continued fevers usually called typhous, which are unques- tionably communicable from person to person. The effluvia which thus form the sole exciting cause of intermittent and remittent fevers proceed from the surface of the earth, and are, probably, gaseous, or aeriform : at any rate they are involved in the atmosphere. But i\\( j are imperceptible by any of our senses. Of their physical or chemical qualities we really know nothing. We are made aware of their existence only by their noxious effects ; and the inference that they exist was not made till within the last century and a half. — Time out of mind, indeed, it had been matter of common observation that the inhabitants of wet and marshy situations were especially subject to these definite and unequi- vocal forms of disease. But the Italian physician, Lancisi, was the first, so far as I know, to put forth distinct ideas concerning malaria, in his book, published about lt!95, De noxiis paludum cjffluviis. This is the great original work upon the subject. 442 IiNTERMITTENT FEVER. To the production of this deleterious agent, a certain degree of temperature seems necessary. It does not appear to exist witliin the arctic circle : nor does it manifest itself during the colder seasons of more temperate climates. It is very seldom traceable beyond the 56th degree of north latitude ; and it is supposed to require for its development a continuous temperature higher than 60° of Fahrenheit's thermo- meter. The nearer we approach the equator, the more abundant, virulent, and per- nicious does the poison become, wherever it is evolved at all. — In this climate it gives rise to intermittonls, and principally to tertians. As we go south, in Spain, and along the shores of the Mediterranean, the remittent becomes the predominant form ; and (what is very instructive) remittents there contracted often improve into inter- inittents upon the removal of the patient to a colder climate. Under the tropical heats, in the West Indies, for example, the fevers very frequently assume the conti- nued form. And another condition of the development of the poison soon becomes apparent It requires a certain degree of moisture. Of all these regions, malaria, showing itself always by its effects alone, infests certain parts only ; which parts are, most generally, remarkable for their humid and swampy character. Thus, in this island, intermittents are produced chiefly, I may say almost exclusively, along the eastern coast ; in parts of Kent, Essex, Cambridgeshire, Norfolk, Lincolnshire, and the East Riding of Yorkshire : and in each of these counties there are marshes, or fens, or low grounds and lands that are occasionally overfloAved. Many of these spots have, within the last fifty years, been drained, and brought under cultivation ; and agues are consequently much more rare in England than they formerly were. In Syden- ham's lime they were very frequent, and very fatal indeed, in this metropolis. James I. and Oliver Cromwell both died of ague contracted in London. At present (as I said before) we seldom meet with them. — Except in the year 1827, I have never, since I have been in practice, known ague to be at all common here. This compa- rative freedom from malaria is mainly owing, no doubt, to the improved character of the draining and sewerage. Agues, or aguish fevers, are endemic along every part of the low and level coast of Holland. In Italy, the Pontine marshes, near Rome, have possessed for ages an infamous celebrity of the same kind. The whole of the district called the Marcmna, which stretches for about thirty leagues along the shores of the Mediterranean, and which in some places is ten or twelve leagues broad, is rendered dangerous, and almost uninhabitable, by the vast quantity of malaria annually evolved from its soil. In America large districts are, for the same reason, prohfic of disease. The late Bishop Heber, in his Narrative of a Journey through the Upper Provinces of In- dia, gives the following striking picture of the influence of the malaria in that part of the world. It seems to be alike pestiferous to man and beast. "I asked Mr. Boulderson if it were true that the monkeys forsook these woods during the unwholesome months. He answered that not the monkeys onl\-, but every thing which has the breath of life, instinctively deserts them from the begin- ning of April to October. The tigers go up to the hills; the antelopes and wild hogs make incursions into the cultivated plain ; and those persons, such as dak- bearers, or military officers, who are obliged to traverse the forest in the intervening months, agree that not so much as a bird can be heard or seen in the frightful soli- tude. Yet during the time of the heaviest rains, while the water falls in torrents, and the cloudy sky tends to prevent evaporation from the ground, the forest may be passed with tolerable safety. // is in the extreme heat, and immediulehj after the .'xiins have ceased, in May, the latter end of August, and the early part of Septem- ber, that it is most deadly. In October the animals return. By the latter end of that month the wood-cuiters and the cow-men again venture, though cautiously. From the middle of November to March troops pass and repass, and with common precaution no risk is usually apprehended." Peisons who live in England might perhaps be disposed to think lightly of the malaria, had not such fearful evidence of its appalling power been brought home to the experience of our countrymen, in the early part of the present century, by the esull of the unfortunate expedition to Walcheren. Sir Gilbert Blane has given an \ INTERMITTENT FEVER. 443 account of the ravages it ihere committed among our troops. You may see his paper, to which I shall presently again refer, in the third volume of the Mcdico-Chi- riir sliced I'ransuctions. Not only a certain degree of heat, and a certain quantity of moisture, but the pre- sence of all the four elements of the ancients, would appear to be requisite for the production of this poison. Air of course there must be ; and earth also is essential. If heat and moisture were alone adequate, we should find the fever prevailing among sailors when out at sea: but it is not so, whatever may be the temperature under which they cruise. It is when they approach the coast, or land upon it, that they are attacked. The water of marshes has been examined under the microscope, and analyzed again and again, with a view to the discovery of the nature of this pesti- lential agent ; but in vain. A more likely Avay to detect the noxious material would seem to be by examining the air of malarious districts ; and this has been done carefully and repeatedly by expert chemists ; and with the same want of success. The poisonous princi})le eludes the test of the most delicate chemical agents. Where there are are much heat, and much moisture, there we usually find also much and rank vegetation, and much vegetable dissolution and decay. The belief was as natural, therefore, as it has been general, that the putrefaction of vegetable matters was somehow or other requisite to the formation of the poison that exists so commonly in swampy situations. This belief has descended, almost unquestioned, from the time of Lancisi ; and it obtains almost universal acceptance, I fancy, among phj'sicians of the present day. Yet very strong facts have been adduced to show that the decomposition of vegetable substances is only an accidental, though a fre- quent, (iccompuniment of the miasm ; and not by any means an essential condition of its evolution. In the first place, the decomposition of vegetable matter goes on abundantly vnth out the production of m.alaria. The rotting cabbage-leaves of Covent Garden, and .hose w'hich taint the air of the streets from the neglected dust-holes of London, during the hot weather of summer give rise to no ague. The same may be said of the putrefying and offensive sea-weed, which is deposited in large quantities upon some very healthy parts of our sea-coast. But the converse facts are the njo^t remarkable and conclusive. I have stated that marshes are not necessary to pro- duce malaria; but Dr. William Ferguson — a physician who has had, and who has well used, very suflicient opportunities of investigating the question — shows that vegetation is not necessary : that the peculiar poison may abound where there is no decaying vegetable matter, and no vegetable matter to decay. As the prevailing belief is, in my opinion, an erroneous one, and as it is really of great importance that correct views of this subject should be taken and disseminated by medical men, I will mention a few of the most striking of the facts detailed by Dr. Fercjuson. They are contained in a very interesting paper " On the Nature and History of the Marsh Poison,''^ published in the Edinburgh Philosophical Transactions. In August, 1794, after a very hot and dry summer, our army in Holland encamped at Rosendaal and Oosterhout. The soil, in both places, was a level plain of sand, with a perfectly dry surface, where no vegetation existed, or could exist, but stunted heath plants. It was universally percolated to within a few inches of the surface, with water which, so far from being putrid, was perfectly potable. Here fevers of the intermittent and remittent type appeared among the troops in great abundance. It is interesting to observe that the soil in Walcheren is precisely similar. Sir Gil- bert Blane describes it as consisting " of a fine white sand, known in the eastern counties of England by the name of silt, and about a third part of clay." It was after a hot and dry summer, also, that the British army suffered in that island from the endemic fever, to a degree which Dr. Ferguson speaks of as "being almost un- precedented in the annals of warfare." In the year ISOO, several regiments of our army in Spain took up an encamp- ment in a hilly ravine which had lately been a water-course. Pools of water still remained here and there among the rocks, so pure that the soldiers were anxious to bivouack near them for the sake of using the water. Several of the men were seized vvilh violent remitting fever before they could move from the bivouack the next morn 444 INTERMITTExXT FEVER. ing. "Till tb^n (says Dr. Ferguson) it had always been believed amongst us thsS vegetable putrefaction (the humid decay of vegetables) was essential to the produc- tion of pestiferous miasmata ; but in the instance of the half-dried ravine before us, ^ I from the stony bed of which (as soil never could lie for the torrents) the very exist- M ence even of vegetation was impossible; it proved as pestiferous as the bed of a fen." After the battle of Talavera, the army retreated along the course of the Guadiana river, into the plains of Estremadura. The country was so arid and dry for want of rain, that the Guadiana itself, and all the smaller streams, had in fact ceased to be streams, and were no more than lines of detached pods in the courses that had for- merly been rivers. The troops there " suffered from remittent fevers of such destruc- tive malignity, that the enemy, and all Europe, believed that the British host was extirpated." Cividad Rodrigo is situated on a rocky bank of the river Agueda, a remarkably clear stream ; but the approach to it on the side of Portugal is through a bare, open, hollow country, that has been likened to the dried-up bed of an extensive lake; and upon more than one occasion, when this low land, after having been flooded in the rainy season, had become as dry as a brick-ground, with the vegetation utterly burned up, there arose to our troops fevers which, for malignity of type, could only be matched by those before mentioned on the Guadiana. Many more facts to the same purpose are related in Dr. Ferguson's paper, which is in every way well \vorth your perusal. He tells us " that in the most unhealthy parts of Spain, we may in vain, towards the close of the summer, look for lakes, marshes, ditches, pools, or even vegetation. Spain, generally speaking, is then, though as prolific of endemic fever as Walcheren, beyond all doubt one of the driest countries of Europe ; and it is not till it has again been made one of the wettest, by the periodical rains, with its vegetation and aquatic weeds restored, that it can be called healthy, or even habitable with any degree of safety." Our time will not allow of my extracting any further evidence on this point ; one circumstance of contrast, however, I am unwilling to omit. The river Tagus is, at Lisbon, about two miles broad ; and it separates a healthy from a very unheakhy region. On the one side is a bare hilly country; the founda- tion of the soil, and of the beds of the streams, being rock, with free open water- courses among the hills. This is the healthy side. But the Alentejo land, on the other side, though as dry superficially, being perfectly flat and sandy, is most pesti- ferous. Moreover, in and near Lisbon there are numerous gardens, where they keep water, durino- the three months' absolute drought of the summer season, in stone reservoirs. These reservoirs, containing water in the most concentrated state of foul- ness and putridity, are placed close to the houses and sleeping rooms : the inhabitants literally live and breathe in their atmosphere. " Yet no one ever heard or dreamt of fever being generated amongst them from such a source ; though the most igno- rant native is well aware that were he only to cross the river, and sleep on the sandy shores of the Alentejo, where a particle of water at that season had not been seen for months, and where water, being absorbed into the sand as soon as it fell, was 7iever known to be putrid, he would run the greatest risk of being seized with re- mittent fever." Now these facts, and facts like these, ^eem to prove that the malaria, and the pro- duct of vegetable decomposition, are two distinct things. They are often in company with each other, but they have no necessary connection. "Whoever, in a malarious country, waits for the evidence of putrefaction, will wait, says Dr. Ferguson, too long. For producing malaria it appears to be requisite that there should be a surface capa- ble of absorbing moisture, aiad that this surface should be flooded and soaked with water, and then dried : and the higher the temperature, and the quicker the drying process, the more plentiful and the more virulent (more virulent probably because more plentiful) is the poison that is evolved. The putrefaction o^ animal matter is sometimes spoken of as an element in the lormation of the malarious poison. But the evidence I have just set before you re- futes this sup position as completely as it excludes the alleged necessity of vegetable INTERMITTENT FEVER. 445 decay. I hoj^e to prove to you, in a future part of the course, that neither animal nor vegetable decomposition is sufficient to generate fever of any kind. Dr. Ferguson's facts are generally. in accordance with the observations which others have made upon the same subject : and his views will be found to account for some phenomena which the ordinary theory of vegetable putrefaction did not cleverly explain. There is good reason for believing that in all cases the poisonous emanations pro- ceed from parts ot the surface that have been flooded and then dried, rather than from parts that are still wet, or putrid. And this elucidates a circumstance very often noticed, viz., that neighbouring places — especially high and low lands lying near each other — change their character in respect to salubrity upon the occurrence of rains. The low grounds, which bad previously been very dangerous, become healthy when they are flooded over: and the higher lands, which are made wet, and which rapidly dry again, produce the malaria abundantly. For the same reason, the edges or borders of swamps, which of course expand or contract according to the wetness or dryness of the season, are more unsafe than their centres. The drying and half-dried margins of the purest streams may be prolific of the evil, when, from the want of confining banks, those margins have been flooded by the rising of the waters. There is no observation more general than that, in malarious places, agues and remittent fevers abound more in hot and dry years than in those which are cold and moist. And this influence of temperature it is which mainly determines the differ- ences observable in regard to these fevers at different elevations, and in different seasons of the year. In the higher grounds of the West Indies agues occur as in this country : as you descend, and the mean atmospheric temperature increases, remittents are met with : and in the lowest and hottest parts the fever becomes con- tinued. The following instructive facts are stated by Dr. Ferguson. In 181*nd Re/ledions, published since these lectures were delivered) " On INIorbid Actions of Inter- vijttent kind." — T. W. MALARIA. 451 night especially, upon the surface. This may be one reason why lying down to sleep in the open air at night is so very perilous. The lower rooms of the same house may contain the noxious effluvia, while the upper are free. " In all malari ous seasons and countries," says Dr. Ferguson, "the inhabitants of ground Jioors are uniformly affected in a greater proportion than those of the upper stories. Ac- cording to official returns during the last sickly season at Barbadoes, the proportion of those taken ill with fever in the lower apartments of the barracks exceeded that of the upper by one-third, throughout the whole course of the epidemic. At the same time it was observed that the deep ditches of the forts, even though they con- tained no water — and still more the deep ravines of rivers and water-courses — abounded with the malarious poison." Dr. Hunter, in his work on the diseases of the army in Jamaica, says, " The barracks of Spanish Town consist of two floors, the first upon the ground, the second on the first. The difference in the health of the men on the two floors was so striking as to engage the attention of the Assembly of the island : and upon investigation it appeared that three were taken ill on the ground floor, for one on the other. The ground floor was not therefore used as a barrack afterwards," Mr. Ralph, in a table printed as an appendix to a paper of Dr. Ferguson's in the eighth volume of the Medico-Chirurgical Transactions, states the results of an inquiry into the comparative healthfulness of the upper and lower apartments of barracks in Barbadoes, to have been that the individuals residing in the lower apartments were attacked in the proportion of two to one of those living in the' upper : and with certain apparent exceptions, which I shall notice presently, experience is uniformly in favour of the proposition that the poison is most preva- lent and destructive near the surface of the earth, and does not rise high into the atmosphere. To specify the sanatory precautions dictated by an acquaintance with this pro- perty of the malaria, must be quite superfluous. Thirdly, the malaria is movable by the wind. It is capable, therefore, of being carried from the spot where it was generated, and to other places which might else be free from it and healthy. In this respect it is analogous to a heavy fog or vapour : and, in some cases, it is accompanied by a palpable mist ; to which, perhaps, it may cling. The following passage relative to this subject occurs in Bishop Heber's Journal. " From Cheeta Talao our road lay through a deep and close forest, in the lower parts of which, even in the present season, the same thick milky vapour was hovering as that which I saw in the Terrai, and which is called essence of owl." This Terrai is the region which I mentioned in the last lecture as being so pestife- rous, that it is deserted, during certain parts of the year, by every living creature. This conveyance of the poison, like a cloud or fog, from one part of the surface of the ground to another, it is very important to attend to in all places ; and espe- cially so in tropical climates, where the wind blows for a long time together from the same quarter. We are thus enabled to account for the apparent exceptions to the last-mentioned property of the malaria, viz., its preference of low to elevated situations. You will readily understand how the miasmata may roll up, and hang accumulated upon, the side of a hill towards which. a current of air sets steadily from or across a neighbouring marsh. Nay, the poison may be thus blown over a hill, and deposited on the other side of it. In this way, I presume, are to be explained the following curious facts, related in Dr. Ferguson's paper. The beautiful port of Prince Rupert's, in the island of Dominica, is a peninsula which comprehends two hills of a remarkable form, joined to the main land by a flat and very marshy square isthmus to windward, of about three-quarters of a mile in extent. The two hills jut right out on the same line into the sea, by which they are on three sides encompassed. The inner hill of a slender pyramidal form, rises from a narrow base nearly perpendicular, above and across the marsh from sea to sea, so as completely to shut it out from the port. The outer hill is a round-backed bluff promontory, which breaks off abruptly, in the manner of a precipice above the sea. Between the hills runs a very narrow clean valley, where all the establish- ments of the garrison were originally placed; the whole space within the peninsula being the driest, the cleanest, and the healthiest surface conceivable. It was speedily 452 INTERMITTENT FEVER. found that the barracks in the valley were very unhealthy ; and to remedy this fault, advantage was taken of a recess or platform near the top of the inner hill, to con- struct a barrack which was completely concealed by the crest of the hill from the view of the marsh on the outside, and at least three hundred feet above it : but it proved to be pestiferous beyond belief. In fact no white man could possibly live there, and it was obliged to be abandoned. At the time this was going on, it was discovered that a quarter which had been built on the outer hill, on nearly the same line of elevation, and exactly five hundred yards further removed from the swamp, was perfectly healthy ; not a single case of fever having occurred in it from the time it was built." There is a striking anecdote given by Lancisi, showing, on a small scale, the effect of the wind in carrying the malaria with it. Thirty ladies and gentlemen had sailed to the mouth of the Tiber on an excursion of pleasure. Suddenly the breeze shifted to the south, and began to blow over a marshy tract of land situated to windward of them. Twenty-nine of the thirty were immediately after attacked with tertian ague. So also Humboldt informs us that the town of Cariaco is afflicted with inter- mittents by the north-west wind conveying across it the miasmatic emanations of the Laguna of Campona. And as the wind may thus transport the malaria to a distance, and thereby render a spot unhealthy which naturally would not be so : so also it is often of service in clearing the poison from other places, and preventing its concentration. A knowledge of these facts ought to be valuable in determining the choice of encampments, and of sites for dwelling-houses in aguish districts. Settlers in hot chmates, especially where trade-winds prevail, would do well to avoid founding towns on the lee side of any swampy or suspicious ground. The outlets of rivers are commonly selected, for the convenience of commerce : and there is often a right and a wrong bank. I believe that most of the principal towns in the West Indies are built, for the advantage of the outward-bound vessels, upon the western, or lee side of the island. Fourthly, it is a singular, but well-ascertained fact, that the miasmata lose their noxious properties by passing over even a small surface of ivater. Probably they are absorbed by it. And this is another proof of their tendency downwards. Many instances have already been referred to, where some of the crew of a ship have landed on a malarious coast, and have all been attacked by the fever ; while the rest of the sailors, who remained on board, continued all healthy and well, though the ship was close to the shore. You could not have a better or more striking example of this than what took place at Walcheren. "Not only the crews of the ships in the road of Flushing were entirely free from the endemic ; but also the guard-ships which were stationed in the narrow channel between this island (Walcheren) ai 1 Beveland. The width of this channel is about six thousand feet, yet, though some of the ships lay much nearer to one shore than to the other, there was no instance of any of the men or officers being taken ill with the same disorder as that with which the troops on shore were affected." This Sir Gilbert Blane has told us ; and it is curious that Sir John Pringle made the very same remark in the very same place in 1747. He is speaking of the diseases of the campaign in Dutch Brabant ; espe- cially in reference to four battalions which had remained for some time in Zealand: and "he says, " But Commodore Mitchell's squadron, which lay all this time at anchor in the channel between South Beveland and the island of Walcheren, in both which places the distemper raged, was neither afflicted with the fever nor the flux, but amidst all that sickness enjoyed perfect health ; a proof that the moist and putrid air of the marshes was dissipated, or corrected, before it could reach them." It is probable that this peculiarity has led to an erroneous and contracted estimate of the space throucrh which the poisonous effluvia can be carried upon land, by the wind. Although the distance to which they are capable of being so conveyed. A'ithout losing their morbific power, has never been precisely defined, there can be no doubt that it is considerable. In Italy, according to Dr. Macculloch, the poisonous exhalations of the lake Agnano have been ascertained to reach as far as the convent of CamaldoU, situated on a high hill three miles distant. MALARIA. 453 Fifthly, another remarkable property of the marsh poison, is its attraction towards, and its adherence to, the foliage of lofty umbrageous trees: so that it is very danger- ous, in malarious places, to go under large thick trees, and still more dangerous to sleep under them. But this property, thus a source of peril to those who are ignorant of it, affords when known and rightly made use of, a mode of protection and remedy against the influence of the miasmata. In the territory of Guiana, where large trees abound, the settlers live fearlessly, and unhurt, close to the most pestiferous marshes, and to leeward of them, provided that a screen or beh of trees be interposed. New Amsterdam, in Berbice, hes on the lee side of an immense swampy forest, in the direct tract of a strong trade-wind that blows night and day, and pollutes even the sleeping apartments of the town with the stench of the marshes; yet it brings no fevers. The inhabitants are well aware that it would be almost certain death for an European to sleep, or even to remain after nightfall, within the verge of the forest. To cut down the trees would not only be a perilous operation in itself; but would let in pestilence to the town. This property also of the malaria, as well as the use to which it may be turned, was known to Lancisi. He describes the vast increase of agues and remittent fevers in Rome during the summer of 1G95, after a great overflowing of the Tiber, by which the lower part of the city, and the fields adjacent, had been inundated in the preceding winter. The bad effects of this flood were felt throughout the whole of Rome, with the exception of one particular quarter, which was protected by a belt of trees around it. Lancisi even addressed a remonstrance to the Pope against a project which was entertained of felling some wood near the Pontine marshes, be- tween them and the city. He endeavours to show that woods and groves were first made sacred on account of their conservative influence in this way, to prevent their ever being cut down. It would appear, from the facts I have just been detailing, that dwellings unfortu- nately built in the vicinity of marshes, might sometimes be rendered safe and salu brious by encircling them at a little distance by a hedge of trees— or (perhaps) even by drawing round them a broad moat of water. Such experiments deserve, at least, a fair trial. Sixthly, the production and consequently the efTects, of the malaria are prevented, or lessened, by cultivation. It is to this, that the diminution of agues in this country is mainly attributable. The fenny lands have been drained ; and many of them brought under the plough. Dr. Craigie states that East Lothian, in Scotland, was at one time so productive of malaria, that it was quite an expected thing that the reapers in harvest should be attacked with ague ; but that now, in consequence of the perfect tillage, and the numerous tracts of wood with which the country is covered, that disorder is quite unknown there. Converseljs in regions which have been suffered to fall out of cultivation, intermittent and remittent fevers multiply. The more thoroughly any country is cultivated, the more fully, in general, it is peopled also : and in many places the prevalence of these fevers has been observed to diminish and increase with the increase and diminution of the population. Caeleris paribus, agues are much less common in large towns than in country villages. This has been oddly enough accounted for by saying that populous cities are so full that there is no room for the malaria. A much more rational and probable explanation is that which ascribes the freedom of crowded towns, and thickly inhabited districts, to the number of fires burned in them. Many instances might be adduced to show that the more any place naturally pro- ductive of malaria, is depopulated, the more evident does the power of the poison become. The Italians date the introduction of the malaria into the Maremna, from the great plague in the sixteenth century, since which period the inhabitants of thai district have never been sufficiently numerous to counteract the bad air which in creases as population and agriculture diminish. Bishop Hcber, in the narrative I quoted before, bears testimony to facts of th« same kind with those I have now been stating. He says, " At the foot of the lowest hills, a long black level line extends, so black and level, that it might seem to have, been drawn with ink and a ruler. This is the forest, from which we are still re- 454 INTERMITTENT FEVER. ' moved several coss, though the country already begins to partake of its insalubrity. It is remarkable that this insalubrity is said to have gi'eatly increased in the last fifteen years. Before that time, Ruderpoor, where now the soldiers and servants of the Police Thanna die ofTso fast that they can scarcely keep up the establishment, was a large and wealthy place, inhabited all the year through, without danger or disease. The unfavourable change is imputed by the natives themselves to depopu- lation. The depopulation of these countries arose from the invasion of Meer Khan, in 1805. He then laid waste all these Pergunnahs, and the population, once sa checked, has never recovered itself." When persons having intermittent fever are unable to leave the unhealthy situa tion in which they have been exposed to the influence of the malaria — and espe- cially when they are placed under unfavourable circumstances in respect to food, and clothing, and shelter — the disease is apt to become exceedingly serious, leading to disorder of the sensorium, and great disturbance of the abdominal viscera, even in the intermissions ; sickness, diarrhoea, dysentery, diseases of the liver. [Dr. S. A. Cartwriglu, of Natchez, asserts, that the ptssieua grandiflora, or floating plant of the liayons and lakes of lower Louisiana, has the power of preventing the development of malaria in regions particularly adapted to its generation, He affirms, also, that "it purifies all stagnant water in which it grows — that of the lakes and bayous inhabited by it, being as pure to the sight, taste, and smell, as if it had just fallen from the clouds." He ascribes to the presence of and the peculiar "hygienic or health-preserving properties of this plant,'' the remarkable exemption of the inhabitants of lower Louisiana from " malarious or miasmatic diseases." "The fact," he remarks, "that the region of country in which this aquatic plant abounds, is exceedingly healthy, can be established beyond cavil or dispute; it nevertheless contains more stagnant water and swamps than any other inhabited district, of the same extent, in the United States." — C] In Zealand, the biliary functions suffer so much during the complaint, that it is com- monly known among the inhabitants of that country under the name of the gall fever. The frequent unnatural concentration of the blood in the internal parts may afford a reasonable explanation of these phenomena. When death takes place, morbid appearances present themselves such as might he expected : hepatic alterations ; inflammation and ulceration of the mucous membrane of the alimentary canal : but the most characteristic morbid condition produced by repeated attacks of intermittent fever consists in enlargement of the spleen ; Avith or without induration of its sub- stance. That viscus is sometimes enormously increased in bulk, so as to be felt, and even its outline seen through the integuments of the abdomen. It has been known to weigh nearly eleven pounds. So common is this state of the spleen, that it is familiar to the observation of the vulgar, who have even given it a name : it is called among the inhabitants of the fenny parts of this country, the ague cake. I beheve that whenever the abdominal circulation is much embarrassed, and the abdominal veins gorged, as they must be during the cold stage of an intermittent, the spleen in particular becomes distended with blood. Constantly we see this happen when the passage of the blood through the portal vessels is impeded by disease of the liver. Now this distension may not thoroughly subside perhaps at once. If the paroxysms of ague be frequently repeated, we may understand how the spleen may become fuller of blood on each successive occasion. It may be that a portion of the blood coagulates ; or that inflammation of a slow kind is set up in the stretched covering of that organ. At all events, this is a veiy common sequel of ague ; and it can scarcely be doubted that the repeated congestions of the internal vessels and viscera are the determining causes of the ague cake. Independently of the paroxysm of ague, there is ample evidence to show the mjurious influence of the malarious districts upon the general health. In this country suT:h effects are not much seen ; but in places where the malaria is more constantly and abundantly present, the race of inhabitants deteriorates. Their stature is small; their complexion sallow and yellowish; the)'' are prematurely old and wrinkled ; even the children early acquire an aged aspect ; and the spirits and intellects of those who dwell in these unhealthy spots are low and feeble, and par- take of the degeneration of the-'r bodily qualities. MALARIA. 455 It is therefore strange that a notion should ever have prevailed, of the salutifcrous eiTects of an attack of ague. But such a notion may be traced from very nearly our own times up to the earliest records of physic. " The late Dr. James Sims, who was a physician o!' some note in this town, felt convinced, at the commencement of the illness which terminated his life, that he should recover if he could catch an ague : and he went down into one of the marshy districts expressly for that purpose ; but returned to London without having succeeded, complaining that the country had been spoiled by draining, and that there were no agues to catch. The superstitious Louis XL entertained a similar opinion, and prayed to the Lady of Selles that she would confer upon him a quartan ague. Our monarch, James the First, had more sensible notions on that score. There is an old English proverb which says, 'An ague in the spring, is physic for a king;' and when this was repeated to him by his courtiers, he, being then ill of that disease, answered that the adage might be appli- cable to a young man, but that it would not do for an old one like him. In fact, as I mentioned before, he died of his ague. The same doctrine has, hou'-ever, been handed down to us by the father of physic himself. Hippocrates says, in the fifty- seventh Aphorism of his fourth Section, vno oxa^^aov, vi -tita-vov svoxfMi/j-svco, ftvpsfo^ (Ttiysvoixsvoi %vH to vov!;t;ua. And Celsus, in his capital digest of the medical know- ledge of his time, preserves the same opinion, with some apparent astonishment that it should be true. ' Denique ipsa febris, quod maxime mirum videri potest, saepe prajsidio est.' I recollect hearing Dr. Graham, the professor of botany in Edinburgh, relate the following anecdote in one of his clinical lectures, — His brother was intimate with the professor of natural history at Cremona ; and this gentleman was resolved to put the truth of the aphorism that I have quoted from Hippocrates to the test. Accordingly he sent a patient afflicted with epilepsy, to pass a night or two in a marshy place, where the malaria was known to be so abundant and so powerful that (e\v escaped ague, who were there exposed to its influence, and the twofold design succeeded admirably. The patient got an ague, and lost his epilepsy. The worthy professor contented himself with moderating and keeping in check the new complaint, thus intentionally produced, for a period of six months, when he administered its coup de grace in a few doses of Peruvian bark ; and the epilepsy never returned. If I had believed that this could have been any thing more than a mere coincidence, I should have told you of it before, when I was speaking of the treatment of epilepsy. I should rather imagine the notion thus prevalent for so long a time, that ague had a salutary tendency, and that it was wrong to stop it too soon, to have originated in the difficulty which physicians found in stopping it, before its cause was so well understood, and the specific for it was discovered. They found it obstinate under the feeble and inert methods then employed, and therefore they endeavoured to persuade their patients, and perhaps themselves, also, that the disease had better proceed a certain length. I have very little to saj^ in addition to what you must have inferred from what I have already said, as to ihe prognosis in intermittent fevers. In cold countries, such as ours, it is almost always favourable. Of course it will be modified by the pre- vious condition of the patient : if he was beforehand the subject of serious organic visceral disease, or if he be very old or infirm, the supervention of ague may destroy him. But to persons of tolerable heaUh and strength prior to the setting in of the ague, we may confidently promise a acre. In warm countries intermittent fevers are much more dangerous: and are sometimes very rapidly fatal. They are often accompanied by most severe affections of the head, stupor, delirium, convulsions ; and of the alimentary canal, diarrhoea, sickness, and not unfrequently the black vomit. They are prone, also, in those climates, to run into the remittent or conti nued form; and this tendency is shown by long protracted paroxysms, or by the anticipation or doublincr of the paroxysms. In all countries quartans are cured with more difficulty than either tertians or quotidians. And quartans are most common in the autumn : and accordingly autunmal intermittents are more pernicious and in- tractajiile than the vernal. This fact has passed into a proverb in Italy ; which proverb has been thus translated into Latin, " Febris autumnalis — vel est longa, vel lelhulls.''' The longer intermittents have lasted, the more difficult also are they tf 456 INTERMITTENT FEVER. cure : and certainlj^ there is much more danger of visceral disease in those that are of long standing. It is probable that agues, such as we see in this country, would generally, under favourable circumstances, terminate in spontaneous recovery, provided that the patient could be put beyond the further operation of the malaria, protected from exposure to wet and cold, and suitably nourished. But possessing as we do a spe- cific cure for ao^ue, if there be such a thing as a specific, there would be no sense in our allowing the spontaneous recovery to be made : or rather Ave should be inex- cusable, knowing as we do that the complaint is the more obstinate the longer it has lasted, and that it tends to the establishment of organic visceral disease, we should be inexcusable if we did not stop it as quickly as we can. The disease is always distressing to the patient, and always debilitating. It may be dangerous, even in these climates, to weak or old persons : and it is dangerous to all persons in hot cli- mates. " If the first fit (says the wise and observant Heberden) has been marked so clearly as to leave no doubt of its being a genuine intermittent, the remedy should be immediately given in such a manner as to prevent, if possible, a second." There needs very little preparation of the patient before administering the specific substance which is to cure him ; and which every one here knows before he hears me say so, is the celebrated Peruvian bark, or its active principle as presented by the salts of quina. The old practice was to wait a few returns of the fits, either till some hypo- thetical ferment had taken place, or until supposed morbid matter had been expelled by vomiting or purging. There is, however, one very simple and short preparative which I am in the habit of using, and which I learned at Cambridge. You are aware that Cambridge is situated on the very edge of the fenny country which ex- tends along that part of the east coast of the island. Numerous patients afflicted with ague come in from the surrounding villages ; and Dr. Haviland found that many of these had taken quina before they applied for assistance as out-patients at the hospi- tal ; but with very poor success. Now these cases readily gave way — the patient remaining in all other circumstances as before — after the operation of a calomicl purge. I have adopted this practice, therefore, upon his recommendation ; but it does not delay the specific treatment. I generally prescribe three grains of calomel with six or eight grains of rhubarb at bed-time, and commence with the quina the next morning. Very lately, in perusing the late Dr. Baillie's posthumous volume, I met with the following passage : — " 1 have known a good many cases in which bark alone would not cure an ague. In all these cases, as far as I now recollect, Avhen a grain of calomel was given every night for eight or ten nights, bark cured the ague in the course of a few days. This practice I learned from my friend Dr. David Pitcairn." I believe that calomel given once in a purgative dose is enough. But first of all what is to be done for the patient while he is in the fit ? I confess to you that I seldom give myself much concern on that head. In ague, as we see it in this country, nature generally prompts the patient what to do ; to cover himself up in bed, and apply warmth to his feet, and to take some hot drink during the rigors ; to adopt a cooler regimen during the hot stage ; to Avipe his skin dry, if the sweating should be very profuse or protracted. But in hot countries, and in severer forms of intermiuent, the patient really requires some help ; and therefore I must consider shortly in the next lecture the management of the paroxysm ; and I am the more jound to do so, because certain measures which I do not think necessary' or judicious, at any rate for the complaint as we see it here, have lately been stronorl "■ecommended durins: the ague-fit. TREATMENT. 457 LECTURE XLII. Treatment of Intermittent Fever ; during the paroxysm ; during the intermis sions. Prophylaxis. I WAS about, when we last separated, to consider the treatment of ague : first, during the paroxysm ; secondly, during the intermissions. In this climate we need not, I say, encumber a patient in an ague-fit with too much help. But in hot countries, where the disorder is apt to run into the remit- tent, or even the continu d form, and where, during its violent and rapid course, internal organs are liable lO sustain serious damage, the best, and indeed almost the only time for the effectual interference of the physician is in the first assault or pa- roxysm of the disease. The objects of treatment during the paroxysm are, to alleviate the uneasy sensa- tions of the patient : to abridge, if possible, their duration, by shortening the fit ; and to avert the danger which, under certain circumstances, may arise from intense inter- nal congestion long continued, or from the severity of particular symptoms. Now in the cold stage of ague, diluent drinks have been recommended, and cor- dials, and external ivarmth, and opiitm, and emetics, and blood-letting. One would suppose that if some of these expedients were useful, others could scarcely be so too. The diluent drinks are very proper : and 1 should allow the patient to use his own discretion in the choice of them. It was customary, formerly, to prescribe medicated drinks of this kind ; and one pleasant, but neglected ptisan still lingers in our Phar- macopoeia, the decoctum hordei compositum. Now-a-days we are contented with the simple barley-water, toast and water, weak tea, gruel, and the like. These dilu- ents should be taken warm, and for persons who are very feeble or exhausted, they may be made gently cordial ; weak negus, for example, or white wine whey, may be given. External warmth, being what nature and common sense would suggest, is cer- tainly advisable and beneficial in the cold fit ; even the warm bath, if it can be pro- cured. In some places it is the custom to await an expected fit iii the warm bath. When this cannot so conveniently be obtained, the pediluvium may be employed ; or the patient may be put into a warmed bed, and have bags of hot salt or bran ap- plied to his epigastrium; and a hot bottle, or a hot brick, wrapped up in flannel, to his feet. Or, what perhaps is best of all, he may have a hot air bath applied to him, as he lies in bed. This may be very easily done, by means of a semi-cylinder or cradle of wicker work, closed at one extremity by a board. This is laid over the patient, and then covered with blankets. Through a hole in the centre of the board one end of a curved iron tube is passed ; the other end, expanded into a bell, looks downwards : and a spirit lamp being placed beneath it, the air between the wicker work and the sick person is soon made very hot. This apparatus was constructed many years ago, by Dr. Gower, when he was physician to the Middlesex Hospital ; where its utility has been fully proved. External warmth applied in some one of these ways, affords singular comfort oftentimes, and contributes to shorten the cold stage. And the same may be said of friction, with stimulating liniments, along the course of the spine. Lind found that, in children, rubbing the spine with an embro- cation composed of equal parts of soap liniment and laudanum, at the approach of the cold stage, often prevented the paroxysm. Opium has often been exhibited in the cold stage, with the view of cutting short the fit ; and not without some success. The strongest evidence of its usefulness in that stage of the paroxysm is furnished by Dr. Trotter, in his Medicini Nautica. Agues being very frequent among the crew of the Vengeance, he resolved to try the full effect of opium in preventing the fit. At its first approach a dose of laudanum (never less than thirty drops) was given ; if this did not bring on some wanuth within ten or fifteen minutes, from twelve to twenty drops more were administered In most cases, "in a few minutes an exhilaration of spirits was perceived ; the pvls** 2o 458 INTERMITTENT FEVER. from being weak, quick, and sometimes irregular, became less frequent, full, and equal ; an agreeable warmth was diffused over the whole frame, and every unplea- sant feeling vanished, sometimes in a quarter of an hour. The patients were them- selves surprised at the sudden change in their sensations." Dr. Trotter speaks of these as being the completest cures that ever came under his observation. If, at the next period, the paroxysm threatened to recur, the opiate was repeated always with the same success. " Few instances were met with where any indisposition indi- cated a third attack, at the expected period of accession." Notwithstanding this testimony, it appears that opium is still better adapted to another stage of the paroxjrsm. Emetics were formerly much prescribed in the cold stage, at its earhest approach. Cullen recommends them ; and they may sometimes be useful, in spite of Chomel's assertion that they are always hurtful. That they have gone so much out of fashion is, however, a proof that they cannot be depended upon for cutting short the parox- ysm. Vomiting is itself no small distress to many persons ; and for my own part, I should not think of giving an emetic unless some indications of a loaded and op- pressed state of the stomach weje present ; such as nausea, an ill taste in the mouth, a coated tongue, and foul breath. A scruple of ipecacuanha will, even then, be sufficient. The object is to empty the stomach effectually, but mildly. I would not give antimony. Irritability of the stomach, in the more violent of these fevers, is too apt to arise spontaneously. Sir Gilbert Blane tells us that the greatest impedi- ment to the cure of the severer intermittents at Walcheren, in their early stages, proceeded from the extreme irritability of stomach, which made it difficult to admi- nister the requisite medicines. In hotter chmates nausea and vomiting are still more common and more urgent ; and we have to guard against the risk of inducing or aggravating these symptoms. " Emetics (says Dr. Mackintosh, in his Practice of Physic) have been often extolled, but I believe eveiy experienced tropical physician will agree with me in cautioning young practitioners against their indiscriminate em- ployment. Irritability of the stomach is one of the most frequent and troublesome symptoms ; and once excited, it is always difficult, and in many cases impossible to restrain it. I have seen emetics exhibited, and the vomiting has continued till death, in spite of every remedy." [We have repeatedly prevented the accession of the chill by administering to the patient, just before the period when it was expected, an emetic of ipecacuanha, and after this had ceased operating, immersing his feet in hot water, and, as soon as he is placed in bed, giving him from 30 to 40 drops of laudanum, or a teaspoonful of the camphorated tincture of opium. By this treatment not only is the chill prevented or shortened, but the whole paroxysm is often rendered milder. — C] Latel\^ the practice o[ blood-letting m the cold stage has been revived (for it is not a new practice), and strongly recommended by the physician whose name I have just mentioned ; and whose opinion carries with it the more weight from its having been founded on much personal experience in the treatment of these fevers. Dr. iVlackintosh affirms that bleeding, performed in the cold stage, will often stop at once the paroxysm, and with it the disease : that even when its curative effects are less decisive, it will generally stop the cold stage and shorten the paroxysm, and mitigate its severity, and afford speedy and great ease to the distressful sensations of the patient; and that any subsequent paroxysms which may occur will be mild and few. One bleeding, he says, is commonly sufficient ; sometimes two are required : seldom more than two. The blood is to be suffered to flow till the patient feels rehef : wliich usually consists in hberation from pain of the head and loins; freedom of respira- tion ; the departure of the painful sensation of cold ; and the cessation of the tremors and of tiie debility. Most of the patients fall asleep after the operation. These effects have been pr educed by the abstraction of an ounce and a half of blood ; they ha?e sometimes (but rarely) required for their production twenty ounces. Now this is the piece of practice to which I adverted at the "close of yesterday's lecture, as being, iU my humble opinion, inexpedient and not to be recommended* • 9t least in the agues of this country. I have seen a good many cases, first and last, und certainly I have never seen one in which I could have thought such an heroic T TREATMENT. 459 remedy necessary, in the cold stage ; if indeed it be, in that stage, a remedy at all. But I do not desire to oppose my experience alone, or my judgment, to that of Dr. xMaclcintosh. His method has been tried, since he first made it public, by various practitioners in this country. Drs. Townsend and Law, of DubHn, found it fail in the majority of cases. In Dr. Stokes's hands, the most usual effect of blood-letting in the cold stage was, to check the shivering ; and, next to this, to mitigate iis severity, without abridging its duration. In most instances, no modiiicalion was produced ot the hot and of the sweating stages. In Dr. Kelly's experience, the general effect was, to shorten the cold stage, and to render the hot one milder ; but in some cases it seemed to aggravate the symptoms. iVIr. Gill found that, although the blood-Jetting might cut short the cold stage, it appeared to lengthen the period of febrile disturb- ance. Confining myself, then, to intermittents, as they show themselves in this cli- mate, I cannot advise you to adopt the practice introduced by Dr. Mackintosh — of bleeding in the cold stage. I object to it because it appears to me quite unnecessary; because it is not such as the nature of the symptoms would suggest ; because it tends to produce subsequent debility, which we should not needlessly inflict ; and because the experience of other sober-minded men, who have given the method a fair trial, does not bear out the statements made by Dr. Mackintosh in respect to its usefulness. At the same time, after a careful perusal of nearly a hundred cases adduced by Dr. Mackintosh to illustrate the efficacy of this measure, I think it highly probable that blood-letting may constitute the most important part of the treatment, in the very outset of the severer malarious fevers of hot climates ; attended as they are with a degree of internal congestion and disturbance which is dangerous to the integ- rity of vital organs. []\Ir. Twining, in his ^vork on the Diseases of Bengal, bears strong testimony in favour of bleeding in the cold stage of intermittents. In the greater number of cases he lias found it to arrest the paroxysm ; that is, the occurrence of the hot and sweating stages is pre- vented. In the majority of patients, when the bleeding has been preceded by a course of niilu purgatives, there will be no return of the disease, provided attention is paid to keep the body properly clad and to guard against exposure to atmospherical vicissitudes. In this manner, he remarks, we cut short the fever, and guard against those ulterior visceral engorge- ments and indurations, by which it is too often prolonged, until the constitution is completely ruined. The only period of the cold stage at which bleeding is proper, Mr. Twining states to be, at the very commencement of the rigor, or just when the coldness and shivering are com- pletely established. lie has found that, in general, it is sufficient to take from an adult twelve or fifteen ounces of blood, and in the most robust European he would limit the quantity to be taken at one bleeding to twenty ounces. After the arm is tied up the patient should be permitted to lie quiet in bed for an hour or two — but not heated by being covered with too many bed-clothes ; he should be immediately supplied with a cup of warm tea, gruel or thin sago. According to Mr. Twining, " the requisites to ensure success from bleeding in the rigor, are, 1st, the preliminary course of moderate purging; 2d, that the blood be taken, from a large orifice, quite as soon as the coldness and rigor are fairly established ; and 3d, that the patient be bled in a recumbent posture, and no more blood be taken than is suflicient to arrest the paroxysm." In robust plethoric patients, who, during the intervals of the paroxysm, complain of head- ache, and morbid tenderness on pressure over tlie abdomen, and pain or uneasiness in the chest, the disease will seldom be arrested by the first bleeding; in many cases, they will Lave repeated paroxysms in each of which the use of the lancet will be required. Patients, also, in whom the jiaroxysm, more especially the cold stage, is attended with vomiting, Mr. Twining has found to require the repeated abstractions of small quantities of blood during the rigors. — C] If, in this country, bleeding be requisite at all, it is in the hot stage. But it is not requisite at all, except when there appears to be danger of some internal inflatnma- tion. The best remedy of the hot stage is undoubtedly opium. Dr. Lind, who wrote after large experience, says that he never saw a person die in the cold fit, but had known several carried off' in the hot one, with strong convulsions and delirium. He happened to notice the beneficial effect of an opiate given while the patient was very hot and feverish. He determined, therefore, to make further trial of opium 'ii 460 INTERMITTENT FEVER. the paroxysm. " Having at that lime (says he) twenty-five patients labouring undei intermitting fevers, I prescribed an opiate for each of them, to be laken immedial elij after the hot fit, provided the patient had then any inquietude, headache, or anV such symptom usually subsequent to the fever. The consequence was, that nine- teen in twenty-two received immediate relief; the other three had no occasion to take it. " Encouraged by this surprising success, I next day ordered the opium to be given during the hot fit. In eleven patients out of twelve to whom it was thus adminis- tered it removed the headache, abated the fever, and produced a profuse sweat ; which was soon followed by a perfect intermission. Since that time 1 have pre- -jcribed an opiate to upwards of three hundred patients labouring under this disease: and I observed, that if taken during the intermission, it had not the least effect either in preventing or mitigating the succeeding fit ; when given in the cold fit, it once or twice seemed to remove it ; but when given half an hour after the commencement of the hot fit, it generally gave immediate relief." Dr. Lind goes on to state that he found the influence of opium more uniform and constant in intermitting fever than in any other disease ; and more quick and. sensible than that of any other medicine. Very little need be said in regard to the sweating stage. Up to a certain pomi the perspiration is to be promoted and encouraged. When the uneasy feelings of the patient have abated, it should be restrained! ; not suddenly but with caution. Now the sweating may be promoted by diluents ; by keeping the patient in bed, and covered with moderately warm clothes ; by sippings of hot gruel or of hot chicken broth. On the other hand, when the sweating has continued long enough, it may be stopped by drying the patient with towels, changing his linen, and getting him up out of bed. It is well to bear all this in mind ; but I repeat once more that in agues, such as you are hkely to meet with in this country, it is unnecessarj^ and therefore objection- able, to be over-busy during the paroxysm. Wherever the disorder assumes a dis- tinctly intermittent form, the most important part of the practice is that to be employed during the intermissions. Now there are certain general remedies advised lor adoption in this period ; and there are certain specific remedies. The general reme- dies are bleeding, emetics, and purgatives. They need not detain us a moment. Blood-letting may be used if there be any apparent tendency to local inflammation, or any marks of severe topical congestion ; especially in young and robust subjects. Barring such circumstances, there can be no occasion to bleed your patient in the intermissions. An emetic given a short time before the expected paroxysm has been known- to prevent its accession ; and even has sometimes cured the disease. But we can stop the parox3'sms by gentler and better means ; so that I should not prescribe an emetic unless 1 saw symptoms of a foul and loaded stomach. Purgatives should always be given at the outset. They clear the stomach and intestines of hurtful accumulations, which are apt to impede the beneficial operation of the quina, or of other drugs given to check the disorder. I mentioned in the last lecture my own custom in this matter; viz., to give a couple or three grains of calomel with eight or ten of rhubarb at bed-time ; and to commence with the specific remedies the next Aviy. Of these specific remedies, bark and arsenic are by far the most certain and im- portant ; but a multitude of others have been highly praised for possessinof similar virtues. 1 shall by and by say a word or two about some of these, because bark is dear, and arsenic is scarcely a safe drug to be entrusted to the hands of unprofessional persons ; and yet it is often expedient, in country places, where ao-ues are rife, to provide the poor with remedies which they may have at hand ; and which should both be reasonably cheap, and perfectly safe. I shall not detain you with any account of the difficulties and objections which were thrown in the way of the Peruvian bark, upon its introduction into the materia niedica about the middle of the seventeenth century. Its use met with the most violent opposition, even from physicians of the highest authority. It was resisted by TREATMENT. 461 Stahi and Hoffman ; and Boerhaave was never quite reconciled to it. Sydenham, by his example and recommendation, greatly promoted its adoption in this country. All this history is sufficiently curious and interesting, but I have no time for it : and you will doubtless hear it from one of my colleagues. I will merely say that in the Peruvian bark we have one of the very few specifics that we can boast of possessing; and that, unhke most other highly vaunted substances, so far from falHng off from the accounts first given of its virtues, it has acquired in the lapse of time an increase and stabihty of reputation. Neither shall I enter at all into the consideration of the qualities of the several species of cinchona ; nor of the several principles that may be educed from them , nor of the modes in which the quina even may be best procured. This would not belong legitimately to my province. I must suppose that the professors of chemistry and of materia medica have furnished you with the sulphate of quina which is the only preparation of the bark I intend particularly to notice: and my business is to tell you what I know in respect to its employment as a remedy for ague. I may observe, however, that this is a remedy to which we could never have been led by any process of reasoning. It is a matter of pure empiricism. We know nothing of the seat or of the essential nature of the disease ; we are equally in the dark as to the modus operandi of the quina in curing it ; yet our knowledge of ague, upon the whole, estimated in reference to its precision and practical bearing, is more satisfactory than of many other complaints, with the seat and nature of which we are much better acquainted. The group of symptoms is so distinct, that we have no trouble or doubt as to the diagnosis ; and experience has taught us a remedy which is all but infallible. The discovery of quina and its saks formed a great era in the history of the materia medica. As far as my own experience goes, the sulphate of quina has quite super- seded the necessity for exhibiting any other form of cinchona for the cure of ague. Before quina was unshrouded by the chemist, the bark in substance was the only form in which the remedy could be confidently relied upon : and I am old enough to be aware of the infinite superiority of the salt, over the actual bark. To obtain the desired effect, it was often necessary to give it in such quantities as almost justi- fied x\Ir. Abernethy's sarcastic way of speaking of it and of physicians. He said the doctors talked of throwing in the bark, as if it were to be pitched into the stomach with a shovel. The sulphate of quina lies in a much smaller compass, and a more commodious form ; and it does not cause that insupportable nausea which the woody mass of the powdered bark was so apt to occasion. I am in the habit of giving two, and sometimes three, grains of the sulphate of quina every four or six hours during the intermissions, to those patients v/hom 1 have occasion to treat for ague. This plan has succeeded so well, that 1 have never been templed to try any other. I may, indeed, say that I have never known it fail to stop an ague ; and to stop it speedily : so that very few parox3'sms have occurred after the patient has begun to take the medicine. You may give it in the infusion of roses, which contains a convenient quantity of sulphuric acid, to ensure the solu- tion of the sulphate of quina. It changes the colour of the infusion, however, and renders it pinker and opaque. Whether the draught be more or less elegant on that account, I will not take upon me to say ; I know that the virtue of the quina is not much interfered with by the change. In private practice, I commonly prescribe as many drops of dilute sulphuric acid as there are grains of the quina, with a drachm of the tincture of orange-peel, and a drachm of the syrup of the same ; completing the draught with water. This I find my patients commonly approve of, except in its bitterness, which, in solution, nothing can disguise. Or that salt may be administered in the shape of a pill : it is best, however, and surest in solution. A question has been raised, whether this remedy should be given in repeated doses during the intermissions, or whether one very large dose should be given a short time before the paroxysm is expected. Dr. Home made some experiments on that point in the clinical wards of the Edinburgh Infirmary, some time ago; and he thought that the result was in favour of the plan of giving the bark regularly at short intervals. I have told you the amount of my own experience, which, how 2o2 462 INTERMITTENT FEVER. ever, is not very great ; nor have I had any severe cases to deal with. I think it not improbable that my patients would have been cured quite as soon if I had given the remedy in half the strength. Dr. Barker, of Dublin, has found small doses equally effectual with large ones; and this is very likely to be the case with specific remedies. It would appear, however, that in some quartans it is better to give large doses before the return of the paroxysm. Dr. EUiotson gives large doses just after the paroxysm ; and then smaller doses during the remainder of the intermission, at regular periods. A great majority of those who suffer ague are poor persons. Of course, the first object is to make the cure as speedy as possible ; the next to make it as cheap as possible. So that it is not a matter of indifference, or mere speculative curiositj', to ascertain with how little quina you may cure an ague. I repeat that it has not happened to me to be disappointed, when I have given the medicine in small doses, as already described : which amount to abont twelve grains in twenty-four hours ; but, then, I suppose my cases have been well behaved and submissive. Dr. EUiotson states that he is continually obliged to give twenty or thirty grains in the twenty-four hours, before he can cure the complaint ; sometimes in ob- stinate quartans, forty-five grains ; and he mentions one case in which a scruple of the sulphate of quina, with ten minims of the liquor arsenicalis, were given every eight hours in vain, but succeeded perfectly when given every six hours. It appears also, upon the testimony of careful observers, that in warm climates larger doses are required ; and that it takes a larger quantity, upon the whole, to repel the complaint. In the aguish tracts of Italy, in the Maremna, small doses are said to be inadequate ; and the physicians there are in the habit of giving twelve, twenty-four, or even thirty grains at a time : and in one recorded instance, the dose, in seven days, was got up to lOS grains, before the ague was arrested. The medium dose, in many parts of America, seems to be eight grains. It sometimes happens that the irritability of the stomach is so great as to make it difficult to introduce a sufficient quantity of the remedy into the system. This diffi- culty was very much felt at Walcheren : it is in a great measure removed since the discovery of quina. But even the quina sometimes sits ill on the stomach ; and it is often very difficult to get children to swallow any preparation of bark, on account of its bitter taste. It is an important thing to know, therefore, that it has been found scarcely less effectual, in curing the disease, when thrown into the rectum. The menstruum in which it is dissolved should not exceed two or three ounces, lest the bowel should reject it. Its expulsion may sometimes be prevented by adding a few drops of laudanum to the enema. [The quinia may also be administered endermically ; from 4 to 10 grains being sprinkled upon a blistered surface, once, twice or oftener, according to circumstances, in the course of the day. That the remedy will produce its specific effects when thus exhibited we know from experience. — C] It is said that bark in substance will sometimes cure the disease when quina fails. I have never witnessed this : but in obstinate cases I would give the quina in the decoction of bark. [It is very certain that the quinia, even when given freely and in large doses, will occa sionally fail in arresting the disease, and that the majority of such cases will be promptlj cured by the bark in substance. This we have seen repeatedly to occur. — C] You must not be satisfied with merely stopping the paroxysms. Patients will often be too ready to give up their medicine, as soon as the paroxysm has once missed. But the disease is very apt to recur; and it will always be right and pru- dent to go on with the quina for ten days or a fortnight after the patient seems cured, gradually diminishing, after the first week, the amount and the frequency of the doses. There have been some curious facts observed in regard to the relapses that are apt to take place after the bark or the quina has been omitted. Clark, of Dominica, states that if no more of the remedy be taken, in the West Indian ague, than is barely sufficient to stop a fit, and then the bark is suspended, a relapse may take place on the eighth day, in the case of a quotidian ; on the fourteenth or fifteenth TREATMENT. 463 in the case of a tertian or double tertian ; and on the twenty-first or twenty-second in the case of a quartan : thus making (you see) in eacli type, seven periodi- cal revolutions from the time the fit was suppressed to the next attack ; and the fit was found to return on the proper day, at the same hour at which it would have returned if its course had not been interrupted by the administration of the remedy. All this is very curious, and inexplicable : but it points clearly to the propriety of continuing the remedy for some time after the disease appears to have vanished. [The Quini(B Sulphas Impurus of the United States Pharmacopceia, known in Philadelphia under the name oi Extract of Bark, given in pills of from 3 to 5 grains every four hours, will seldom fail in preventing the paroxysm of the disease. — C] Arsenic is another substance which has great and unquestionable power over ague. It carries Avith it these marked advantages : it is efficacious ; it is cheap ; and it is tasteless. It is well adapted by these qualities for the poor, and for children, and for patients of every age and rank in whom there is much irritability of stomach present; but then it has also the serious disadvantage of being an active poison. One over- dose may be fatal : and even its long-continued use in minute doses leads some- times to evident and lasting disorder of the health. Arsenic, therefore, is an unsafe remedy to be trusted in the hands of the ignorant. It should never be administered except under the immediate supervision of a medical eye ; and even then it requires to be given with much caution. Its bad effects may be very certainly prevented, however, by care and attention : and it becomes a valuable instrument of cure, and should be adopted without scruple, in cases where its operation can be watched, and where the quina does not agree with the stomach, or fails to stop the disease. I often prescribe arsenic for other complaints ; but, as I said before, I do not recollect ever having been foiled in removing ague by the sulphate of quina. Some persons are of opinion that relapses are less frequent after the cure by arsenic than after the cure by bark. It would require a large induction of particular facts to make that point clearly out. When substances, which even in small quantities prove active poisons, are used as remedial agents, it is convenient to have some definite form in which they may be administered at all times, and in all places. The liquor potassse arsenitis of the London Pharmacopoeia supplies such a form. This is the form in which arsenic was recommended to the public by Dr. Fowler : and it is therefore sometimes called Fowler^s solution. It was founded upon an analysis of the tasteless ague drop, which had been in considerable repute in some parts of England. The pharmaco- po^ial preparation is an arsenite of potass in solution. There are eighty grains of arsenic in the new or imperial pint, and therefore four grains in an ounce of the so- lution. Ten minims two or three times a day are a full dose for an adult : and you had better commence with not more than five minims. Ten minims contain one- twelfth of a grain. Twice that quantity has been administered at once ; but this ought not to be done except when the system has been gradually inured to the arsenic, and thereby enabled to bear such a dose. It is a good precaution not to give this corrosive substance on an empty stomach. The poisonous or hurtful effects that we have to look out for, when arsenic has been prescribed, are loss of appetite, nausea, and sometimes vomiting ; griping pain of the stomach and bowels, and diarrhcea ; and if the medicine be continued, faint- ing is often added. Other symptoms, less constant, perhaps, and less important, are painful and hot tumefaction and stiffness of the face and eyehds, or even a tingling eruption something like nettle-rash. These effects may, I believe, be controlled by adding a few drops of laudanum to each dose ; but I would rather advise you to sus- pend the use of the arsenic ; or to leave it off altogether. When this is done, the unpleasant symptoms will readily yield to mild laxatives, followed by opiates. [The arsenical solution is a remedy admirably adapted for the cure of intermittent feve» wlien it occurs in children, to induce whom to take the quinia in any form will be found often impossible. When cautiously administered, and its effects are carefully watched, wi" have never known any disagreeable eflects to result from the arsenic, and we have em ployed it somewhat extensively. — C] 464 INTERMITTENT FEVER. T When the paroxysms continue to recur in spite of the bark, it has been recom- mended (and I think the plan a good one), to try to stop them by arsenic ; and then, the })eriodic recurrence having been broken, to employ sulphate of quina to prevent a relapse. These, then, quina and arsenic, are the two sheet-anchors to which we trust in the cure, of ague. A host of other remedies, I say, have had their praises sung. 1 do not intend to enumerate them. But there are a few which I think it right to mention, for reasons already assigned. There is strong evidence of the efficacy of some of them ; they are cheap, and easily accessible, and above all, safe ; and, there- fore, in aguish districts, they may with much propriety and benefit be recommended to the poorer classes, or distributed by Lady Bountifuls. [The ferrocyanuret of iron is certainly a very valuable remedy in cases of intermittent fever. Stokes places it in efBcacy after qtiinia and the arsenical solution, and perhaps he is right in so doing; it will, however, often succeed in preventing the recurrence of the pa roxysms, given in the dose of six grains every three hours. — C] One of these is willoiv-bark ; in substance, or in decoction. If this does cure agues, as it is affirmed to do, it w'ould seem as if Providence had placed the anti- dote alongside of the poison ; for these trees, as you know, abound and flourish in marshy places. The bark of the willow furnishes an alkaloid substance called saJi- cine, in which the febrifuge property is believed to reside. Holly-leaves, and ilicint . derived from them, stand in much the same repute in France, as willow-bark and salicine here. Another curious remedy, said to be very successful, is the web of the black spider, which inhabits barns, stables and cellars. This substance has been tried on a tolera- bly large scale, and the testimony to its influence in curing agues is very strong. Dr. Craige has given this account of it. In the year 17G0, a number of prisoners from the vanquished squadron of Thurot having been landed in the Isle of Man, Dr. Gillespie, who was practising there, found that many of the agues which came to prevail both among these prisoners and the inhabitants of the island, obstinately resisted bark and such other remedies as he had recourse to. He was informed, by an old French physician belonging to the squadron, of the alleged efficacy of cob- web, in certain forms of the disease. He therefore made trial of cobweb, and founo it to answer admirably. He was successful with it in more than sixty cases of dif ferent types, in the Isle of Man, and he had further experience of its utility subse quently in Ayrshire. After this, the same remedy was tested in the West Indies, by Dr. Jackson, to whom Dr. Gillespie had recommended it. Dr. Jackson's observations were made in the hospital of the army depot, in the West Indies, in 1801. Several cases of ague, on which bark, arsenic, or mercury, singly or alternately, had made either a very temporary impression or none at all, were selected for experiment. In four of these cases, two pills, containing each five grains of cobweb, were given at intervals of two hours, commencing six hours before the expected time of recurrence of the paroxysm. The fit did not return. [We have employed the spider's web in this manner in a number of cases, and in many of them found it very promptly to suspend the paroxysms — as effectually, certainly, as th<» quinia ; in a few cases, however, it failed. — C] On subsequent trials it was found not only to arrest the course of agues, but to remove various symptoms, such as pain, delirium, vomiting, griping, in ague, and VI continued fever, when these symptoms were unconnected with inflammation. Charcoal is another substance which has been found effectual for the cure of intermittent fevers. You may find an account of it in the tenth volume of the Edin- burgh Medical and Surgical Journal. It would seem to be especially useful in those cases in which there is a marked disturbance of the digestive organs ; nausea, flatulence, hiccup, diarrhcea, or dj^senter}'. It is said generally to cure the complaint by the time two drachms of it have been taken. It may be given in doses of ten or twenty grains, in arrow-root ; or with a few grains of rhubarb. If the power of this sub&tance should be confirmed by future observations, a cheap remedy would thus I TREATMENT. 465 DC open to the poor. A clergyman of my acquaintance assures me that he seldom fails to cure agues among his parishioners by administering to them the snuffs of candles, which he takes care to have collected. He does not inform them of what his black powder consists. I presume that its virtue may proceed from the char- coal it contains ; unless it is derived from the confidence his flock is accustomed to place in his specific. The veiy same remedy, the snuff of a candle, is mentioned by Lind. Fiperine, the crystaUine salt of pepper, has obtained a considerable reputation, of late years, as a remedy for intermittent fever. It was largely tried by an Italian physician, Meli ; and Dr. Gordini has repeated Meli's experiments at the hospital at Leghorn. The following are the general conclusions at which these physicians have arrived : — 1. Piperine, in doses of six or eight grains, cures intermittents. 2. It is more efficient in powder than in pills. 3. It succeeds in certain cases in which the sulphate of quina fails. And 4. It is more effectual in preventing relapses. I have seen letters from some practitioners in this country, bearing testimony to tlie power of the piperine. That pepper will cure ague,, has long been the vulgar belief; and a very popular remedy for the disease is a teaspoonful of pepper in a glass of gin. I presume that the efficacy of chamomile flowers in the removal of intermittent fever is to be attributed to the piperine which they have been asct-rtained to contain. These flowers had been long in use for the treatment of ague, before the Peruvian bark was discovered ; and they are said to have accomplished a cure, since that lime, after the bark had failed ; but this was before the quina had been educed from it. Fleberden advises us to have recourse to chamomile flowers, if the bark should disappoint us. I am always willing to embrace an opportunity of referring to his commentaries, for the exact observations they contain, but above all for the beautiful Latinity of which the whole book is an example. I recommend it strongly to you, as being, next to C(,'lsus, the best model you can study for good medical Latin. In reference to the point before us he says, "Cortex, quanquam rite sumtus, interdum parum efficax est; quo in casu suspicio erit ventriculum sordibus onustum vin remedii impedire. Itaque vomere oportet ; quo facto, febris raro non cedit. Gluod si redire perseveret, confugiendum est ad flores chamsemeli, quorum contriorum scru- pulus dandus est loco drachmae cinchonoe, et ad idem proescriptum repetendus. Hos flores, sic sumtos, semel atque iterum profecisse expertus sum." Several mineral substitutes for the bark, or for arsenic, have been tried and found useful. Preparations of iron and of zinc. From 5 to 10 grains of the sulphate pf zinc have been given several times a day ; or 3 grains of the oxide of zinv" every three hours. Sir Gilbert Blane says that both in the West Indies and in London, intermittents have been cured by the use of this oxide, when they had previously resisted the bark. Sir James Mac Grigor speaks of it also in terms of praise ; from what he saw of its effects in the agues of the Peninsula during the war. Some of the remedies of this mysterious disorder operate upon the mind, or lather upon the nervous system, through the mind. Hence it becomes probable that the drugs which have such power over the disease, act also on the nervous system, throutjh the body. And hence also we derive a confirmation of the opinion, that the disease itself is essentially a disease of the same nervous system. Ague has ofien been cured by the agency of strong mental emotion, such as sudden and great ioy, anger, terror, or eager expectation. Thus we read that Quintus Fabius Maxi- mus was cured of an old quartan on the day of a great battle. Strong iin])ressions upon the imagination, producing feelings of disgust and horror, have had the same effect: such as those caused by drinking blood, swallowing a spider gently bruised, and wrapped up in a raisin, or spread upon bread and butter; keeping a spider sus- pended from the patieni's neck in a nutshell, till it dies; and the like. The un- doubted success, in many cases, of charms, must be referred to the principle oC faif/i. The patient recovers, because he firmly believes in your power lo cure him. Dr. Gregory used to relate the case of a patient in the clinical wards in Edinburgh, wno, with sundry ceremonies, swallowed some word, written on a slip of paper: the result was, that he had not another paroxysm And I perfectly recollect hay-ng a 30 4GC INTERMITTENT FEVER. great awe, when I was quite a child, of my maternal grandmother, because she was reputed to have the power of curing agues by means of some charm. I believe all that she did was to assure the poor people who came to be relieved from their ague, that they should have no more of it offer such a day; and their implicit reliance upon this prophecy brought about its fulfilment. There seems to be this general principle obserA'able in respect to agues, and to most other diseases which occur in paroxysms, viz., that after they have continued for some time, their further continu- ance depends more upon the efTect o{ habit than any thing else: and this habit may be broken by strong impressions made upon the nervous system ; and the cure of one paroxysm is often thus the cure of the disease. We have seen examples of the existence of this morbid haoit in hysteria, and in some cases of epilepsy. C'ft'leris paribus, that physician will be the most successful in these disorders, who is best able to acquire the confidence of his patient, and to gain a powerful influence over his mind. There is no disease in which the prophylaxis is of more importance ; but this you v.'ill have gathered from the facts which were stated in the two preceding lectures. The disposition to relapse is strongest soon after the disease has been removed ; but it generally continues long, perhaps even for fife. The late Dr. Macmichael caught an ague many years before his death, by sleeping on a rock somewhere in Greece ; and he was ever after subject to occasional attacks of periodic headache, and other aguish symptoms, for which he was obliged to have recourse to bark or arsenic. Of course one essential point in the prophylaxis is the withdrawal of the patient from the influence of the exciting cause ; taking him away from the malarious locality. But this cannoi always be done ; and when it cannot, we must impress upon him those cautions which arise out of the facts ascertained in regard to the operation of the malaria upon the human body. Persons who have been exposed to the exciting cause, or who have once had the fever, should, in whateATr place they may happen to be, avoid over-fatigue, and exhaustion of all kinds ; sudden exposure to cold or heat ; and the neglect of changing wet clothes ; wet shoes and stockings, for instance. In a malarious district persons should bear in mind the facts, that the miasmata ar-e much more virulent in the night-time than in the day ; and close to the surface of the earth, than in a higher part of the atmosphere. They should refrain, therefore, from going out late in the evening, or early in the morning ; and they should rather select the attic than any other floor for their bed-chamber. They who are obliged to go out in the morning in countries where agues are rife, should take care not to go out fasting; a good hot breakfast should be first taken, or at any rate some mode- rate stimulus. A crust of bread and a glass of wine, or a small quantity of ardent spirit, will fortify the system against the pestilential miasma. Measures of this kind have been found extremely beneficial in the navy : the giving, for instance, the men a warm breakfast before going out in the morning on malarious shores in boats, whatever the hour of starting might be. Generous diet, and a fair allowance of fer- mented liquor, are proper also for all persons in aguish countries. The late Dr. James Gregory used to mention in his lectures an anecdote in point, told him by his father. The elder Dr. Gregory studied at Leyden, under Boerhaave; and twenty- four other Enghsh students were living there at the same time : that is, they were called English, on account of their common language, but they were in fact composed of Encrlish, Irish, Scotch, West Indians, and Americans. The celebrated John Wilkes and Charles Townsend were among the number. These twenty-five students lived a good deal together ; in truth they were cut, as the phrase is, by the Dutch, for some raffish behaviour on their parts. However, of the twenty-five, only one was a water-drinker. The other twenty-four drank each a bottle of claret daily; and the water-drinker, and he alone, fell ill of ague there. Persons who have recently become residents in aguish districts, or who even hap- pen to be travelling through them, would do well to take moderate doses of quina by way of safeguard. And in regulating the bowels, which, of course, is of much im- portance, warm stomachic laxatives should be made use of, rather than cold aperi* onts, such qs the neutral salts. ! EPISTAXIS. 467 There is just one more expedient wliich I would suggest as not unlikely to affoil complete protection to those who are of necessity exposed to the malaria ; and it is, that they should wear an orinasal respirator. It is impossible that as a breeze is filtered of the poison which, was mingled with it, by passing through a dense mass of foliage, so, on a smaller scale, the air inspired in breathing may be strained and purified, and rendered harmless, in its transit through the sieve-like structure of Mr. Jeffreys' ingenious instrument. The principle of the suggestion is not new ; but this mode of applying it has not, so far as I know, hitherto been tried. It is said that by surrounding the head with a gauze veil, or conopeum, the action of malaria is prevented ; and that thus it is possible even to sleep in the most pernicious parts of Italy without hazard of fever. Dr. MaccuUoch says that in Malta, and elsewhere, this behef is universal : and hence the popular practice of covering the mouth and nose with a handkerchief in the morning on going out, or in other suspicious circum- stances : a practice (he observes) the efHcacy of which is attested, as far as popular belief can attest any thing. Can it be the moisture which accumulates upon the handkerchief from the breath, that confers the protection ? LECTURE XLIII. Epistaxis. Bronchocele ; Cretinism: their Phenomena and probable Causes. Medical and Surgical Treatment of Bronchocele. I YESTERDAY finished what I had to say respecting intermittent fever ; its symp- torns ; its cause ; and its cure. The subtle poison which produces it is thickly dis- tributed over the fairest portions of the habitable globe : blighting human health, and shortening human life, more often, and to a far greater numerical amount than any other single cause whatever. Known only by its noxious effects, holding out no signal of its presence, this unseen and treacherous enemy of our race has yet been tracked to its haunts and lurking places, and detected in some of its habits. It was necessary, therefore, that I should enter somewhat fully into the history of the mal- aria, and show how it may sometimes be shunned, sometimes be averted ; how, also, in this climate at least, the effects it has already produced upon the human body may be successfully combated. But I shall not pursue in further detail, the ravages committed by this invisible agent, and the remedies they require, in hotter and less favoured regions than our own. Of these personally, I know nothing ; and I must refer you, for information on such diseases, to authors who have seen and treated them : particularly to Drs. Lind, Jackson, Bancroft, Johnson, and Sir William Burnett. It is customary, with writers and lecturers, to pass from the consideration of ague to that of continued fever. A paroxysm of ague has been regarded as exhibiting a paradigm or sample of fever in general. But this has always appeared to me rather an ingenious refinement than a useful matter of fact. Practically, I see nothing to be gained by the association. Intermittent fever, it is true, does often run, in hot climates, into the remittent, and the remittent into the continued form. But these are very different disorders from the continued fever with which, in these climates, and in this country, we have to do. Intermittent fever, and continued fever, as we see them, differ in their phenomena, in their course, and in their treatment. They are alike, inasmuch as they are both called fever, and both are attended, in some part or other of their course, with pyrexia; but, in essential symptoms, I have known many a compound fracture more like continued fever than any ague we are likely to witness. I shall take up the subject of continued fever, then, in connection with the eruptive febrile diseases, with which it has many strong links of analogy ; and I resume the consideration of the disorders that come within the province of the physician, according to their anatomical seat. 468 EPISTAXIS. After what was stated 0*" .lemorrhafje in general, in an earlier part of the course, I hardly know whether epistaxis needs or deserves any formal notice. There are, however, some points relating to this simple, and commonly harmless hemorrhage, which it may be worth v^'hile very briefly to touch upon. Sometimes it is a remedy ; sometimes a warning; sometimes really in itself a disease. The readiness with which the mucous lining of the nasal passage pours forth blood is familiar toS.he experience of every schoolboy, who " often wipes a bloody nose." A slight blow, brisk exercise, a strong bodily effort, a fit of sneezing, or the summer heat, is suffi- cient, in many boys, to make the nose bleed ; and this facility of hemorrhage furnishes, often, an index of some unnatural state of the circulation : and especially of undue fullness of the vessels of the head. But the import of this symptom is not always the same. Epistaxis may, indeed, be taken as affording an epitome of the various forms of hemorrhage by exhalation. In childhood and early youth it is idiopathic, dependent upon active congestion, and probably arterial. It is nature's favourite mode of blood-letting at that period of life. In old age it is symptomatic, the result of passive or mechanical congestion, and probably venous. In some adult persons it happens periodically, and is habitual: and its suspension, rather than its occur- rence, becomes a token of disease or of danger. In young women it is not seldom vicarious of suspended menstruation : in men it is apt to take the place of hemor- rhois. Lastly, it may proceed from disease in the nares themselves ; or form a part of a more general hemorrhagic disorder. It is unnecessary to go at length into the phenomena of epistaxis. The main phenomenon becomes obvious at once both to the patient and to those around him : and the accessory and incidental circumstances are easily discoverable when the attention is aroused to them by the sight of the blood. Usually the blood flows guflalim; in a succession of drops: but these may follow each other so fast as to constitute a little stream. Sometimes a few drops only fall ; sometimes several pints are lost. A moderate hemorrhage of this kind is generally succeeded by a sense of relief and refreshment. A large efflux of blood may cause pallor, faintness, debility, exhaustion, even deatb. Active idiopathic epistaxis, as it occurs in children, is almost always salutary, and may be left to work its own cure. When it runs into excess, or is too often repeated, it may be checked by applying cold water to the forehead and to the bridge of the nose. The sudden contact of some cold substance with a distant part of the surface of the body will often have the effect of restraining the hemorrhage : apparently by producing a general and sympathetic constriction of the superficial blood-vestels. This is doubtless a reflex phenomenon. The nursery remedy is to slip a cold key down the child's neck, between its back and its clothes. The aspersion of cold water is iitill better. Besides these external appliances, cooling laxatives should be given : and if the bleeding proves obstinate, some astringent internal remedy may be thought proper. I have, myself, hitherto found none so efficacious as the acetate of lead. But I have been recently informed by Dr. Latham that his experience has led him to trust much to mercury in the management of epistaxis ; and that the same indica- tions have governed him, in adapting its use to this form of hemorrhage, as serve to guide him in cases of inflammation. Thus, when the hemorrhage has been profuse and frequent, and moderate depletion by blood-letting, or by purgatives, has not arrested it, he has brought the constitution rapidly under the influence of mercury; and as soon as the mouth became sore, the hemorrhage has ceased, not a drop more of blood has been lost. Again, when the epistaxis has been, not copious, but habitual or frequently recurring, without any excess of vascular action, or any other apparent ailmenc in the constitution at large. Dr. Latham has often cured his patient by a moderate salivation, gradually induced, and continued for a few weeks. In conversing with Dr. Southey on the same subject, I find that he also has been taught by experience to rely upon mercury as almost a specific remedy for obstinate hemorrhage, occurring under similar conditions, from whatever organ of the body it may proceed. This plan of treatment it is therefore my purpose to prove, as future opportunity Miay permit. I H EPISTAXIS. 469 When epistaxis begins to show itself in advanced life, it is a symptom which cannot safely be neglected : for it indicates that the veins of the head are loaded. It implies a morbid condition that requires to be redressed. You will look for disease of the heart — or for threatenings of apoplexy — and take your measures accordingly The blood-vessels which ramify upon and beneath the pituitary membrane, commu nicate by indirect inosculation with the veins and sinuses of the skull, as well as with the jugular veins. You see, therefore, how it is that hemorrhage from this membrane may perform the office of a safety-valve, and protect the important organ within the cranium from impending mischief. On the other hand, when epistaxis, which is known to have been habitual, fails to recur at or about the usual periods, you will look, with a jealous care, into your patient's state, and watch for and obviate any tendency to plethora capitis. When epistaxis forms a part of more general hemorrhagic disease — as when it occurs among other symptoms of purpura — its treatment merges in that of the whole malady. In any case, if the flow of blood be excessive, and cannot be restrained by the ordinary remedies, but is exhausting the patient's strength, it becomes an absolute disease : and it will be requisite to staunch the blood by manual expedients. These consist in stopping the bleeding orifices mechanically : which is most effec- tually to be done by plugging the cavity. A dossil of lint must be carefully inserted into the bleeding nostril. Its mechanical effect, which is pressure, may be chemi- cally aided by first wetting the lint with a saturated solution of alum. The mode of introducing these plugs it is the business of the surgeon — and not mine — to teach. The operation is not a very comfortable one either to bear or to perform. A very simple mechanical remedy has been lately announced by Dr. Negrier, of Anglers ; who discovered it (he says) by mere accident. The patient is to raise one or both of his arms above his head, and to hold them for some little time in that position. Dr. Negrier declares that during an experience of three years he has never known this method fail to arrest the bleeding. His explanation of its modus operandi is not very satisfactory. The expedient itself is however so easy, so prompt, and even if unsuccessful so harmless, that its real value deserves to be tested — and will soon probably be settled — by an ampler trial. [In cases of frequently recurring or long-continued epistaxis, blisters to the nape of the neck will be found, in general, a very etfectual remedy. — C] Before we trace this mucous membrane downwards, through the mouth, to the inside of the throat, let me turn your attention to a singular disorder which may be deemed external, for it is scarcely more than skin-deep : I mean that enlarged state of the thyreoid gland to which tlie name o( bronchocele has been given. This u )rd is not merely derived from the Greek, but was used by the Greek writers in the same sense in which we now employ it. In Switzerland, where it is very common, and in France, the complaint is called goitre ; a corruption, it is believed, of the Latin "guttur," the throat. It is known in England as the Derbyshire neck; from its frequent occurrence in that country. The term bronchocele has been sometimes applied indiscriminately to all protu- berances or swellings in front of the throat; or at any rate, to all enlargements of the thyreoid gland ; whereas it should be restricted to hypertrophy of that part . an exaggeration of its natural structure, with augmentation of its volume. The texture of the gland becomes coarser; its blood-vessels grow larger and more numerous ; us cells are magnified, and fdled with a thick, viscid secretion. It usually presents a soft, smooth, elastic tumour, which is neither painful, nor tender, nor discoloured. The lobes of the gland become more obvious. Sometimes the whole tumour ia irregularly lobulated : sometimes the exact form and relative proportions of the gland are preserved, each lobe and portion being equally increased in size. Occasionally there is a soft uniform or irregular swelling, without much distinction of parts. Alibert states that the right lobe is more frequently enlarged than the left. Mr, Rickwood found it so in every instance of bronchocele that came under his notice in the neighbourhood of Horsham. 2p 470 BRONCHOCELE. Unless the tumour be very large, it follows all the motions of the larynx : and this IS a point of considerable importance whenever the diagnosis is at all doubtful. It is just possible that an enlarged lymphatic gland, or an encysted tumour in the neighbourhood of the larynx, or even a collection of pus thereabouts, might, in some degree, embarrass the diagnosis. But, by placing the head and neck in different successive positions, swellings of this accidental kind may, in general, be ascertained to be unconnected \^-ith the larynx : and they do not follow its up and down move- ments when the act of deglutition is performed. It is of importance to know, also, that the gland itself is subject to different kinds of enlargement. It may swell from inflammation, chronic or acute : and then it will be hard, and tender, and painful. But it does not seem very prone to inflame ; and probably Dr. Copland is right in his opinion that inflammation occurs sponta- neously in this organ in scrofulous persons only. Baillie and Ahbert speak of it as being occasionally the seat of cancer: but that must be very rare. Sometimes carti- laginous or ossific deposits take place in the gland. It is necessary, I say, to be aware of these circumstances, and to distinguish one kind of thyreoid tumour from another : for some of the morbid changes just referred to are clearly be3'ond the power of any medicine to remove ; and if all forms of enlargement incidental to this part are lumped together under one common name of bronchocele, we shall be liable to arrive at false conclusions concerning the power of remedies over that disease. Bronchocele is not, in itself, a painful disorder : nor does it taint the s)^stem, or affect the constitution in any way. It has no character of malignancy about it. It is always, however, a deformity ; and, by its mechanical effects, that is, by its weight when large, and by the pressure it exercises on contiguous parts, it may occasion great distress, and suffering, and even death itself. The size, and the effects, of the tumour both vary much in different cases ; but its injurious effects are not always, though they are generally, in proportion to its bulk. Sometimes there is no more than a slight fullness of the throat, which some persons, I beheve, think rather graceful than otherwise. Now and then, the swelling, after its first commencement, develops itself with great rapidity; but its ordinary progress is slow. It often con- tinues for months, or years, without reaching any extreme or very troublesome mag- nitude. Sometimes it remains stationary for a considerable time, and then suddenly increases without any apparent cause. The worst effects of bronchocele are its interference with the circulation, and with respiration. By its pressure it may obstruct the free descent of the blood through the veins of the neck, and give rise to headache, giddiness, noises in the ears, confusion of thought, and a turgid condition of the head and face. Or, by pressing upon the wind-pipe, it may cause hoarse- ness, wheezing, and d3^spncea. It may even impede deglutition. But these effects, I say, do not depend ahogether on the actual size of the tumour. A very large goitre may produce no other inconvenience than what results from its weight and i-ts unseemly appearance. It may surround all the front and sides of the neck like a thick collar, and rise as high as the ears ; or it may hang down, in a pendulous lump, and be supported upon the chest. Nay, the tumour is said to descend, in some rare instances, so low as to be in contact with the abdomen : and Alibert mentions one case in which the swelling was of a tapering cylindrical shape, and reached to the middle of the thigh. On the other hand, a small tumour, not bigger than one's fist, especially if it happens to occupy the ce.itral portion, or what is called the isthmus, of the gland, may so press inwards upon the trachea as mate- rially to hinder the breathing, and even to threaten suffocation. A pupil now attending the hospital has informed me of a case, which he himself saw, of death produced by the encroachment of a bronchocele ; not so much, however, from suffo- cation as from starvation : for the swelling encircled the trachea, and came at last to press so much upon the woman's oesophagus, that she could not get food into her stomach. I suppose that the reason of these differences may be sometimes found in the manner in which the tumoui: grows, and in its relative situations. When it is bound down by the muscles of the neck, it presses, as it continues to enlarge, upon I BRONCHOCELE. 471 the parts behind it. Wlien it is not so confined, the skin readily yields, and the entire growth of the tumour takes place anteriorly. This disease is much more corgmon in women than in men. Indeed we seldom see it, in this country, except in females. Yet I happen to have an example of it now, (December, 1S37) in a male among my patients in the hospital. Dr. Andrew Crawford states that forty-nine cases were admitted into the Hampshire County Hospital, in ten years, and forty-eight of these were in women. Of seventy patients treated in the Chichester Infirmary in nine years, two only were males, asd they were boys of a very feeble and feminine habit, and backward for their years. Among one hundred and sixteen patients of Dr. Manson, fifteen were men. Taking an average from these three lists, we have one male for twelve females. It is well to bear in mind that our fashion of dress renders a small bronchocele much more noticeable, much less easily concealed, in women than in men. In the former the swelling has been knowm to come on, or at any rate to increase rapidly, during their confinement in child-bed : and it is frequently observed to undergo a temporary en- largement at the menstrual period. Dr. Copland has seldom met with an instance in the female, unconnected with some kind of irregularity in the catamenial discharge, or disorder of the uterine functions ; and he never saw a case in which the disease made its appearance before the period of coimmencing puberty. In Switzerland, and in some parts of India, where the complaint is much more prevalent than here, the proportion of males affected is greater ; and it begins, often, prior to the age of puberty, in both sexes. It seldom shows itself earlier than the age of eight or ten. Dr. EUiotson states, indeed, that he himself, when in Switzerland, saw goitre in a little boy only four years old ; and the natives told him that it rarely made its appear- ance before the age of six. But children have been born goitrous. M. Godelle, physician to the hospital at Soissons, had a preparation of the body of an infant, which only hved a few hours, and which came into the world with a goitre ; the mother being a.Tected with the same disease. A case is mentioned in the London Medical Repository of a child born in Derbyshire with bronchocele of considerable size. The disease, therefore, undoubtedly may be congenital ; and one of the facts I have just mentioned points to the question of its being hereditary. It is said to be so ; and there is much probability in favour of that opinion. Children born of goitrous parents often have goitre. But that, you will say, may depend upon their being in the same place, and exposed to the same causes, which produced bron- chocele in the mother or father. Dr. Crawford states, however, that he knew a woman, with goitre, whose grandmother, father, paternal aunt, and cousins, also had it, although they did not all live in the same place, and no other person in their respective neighbourhoods was affected by the disease. Admitting what seems probable, that the disease may sometimes be hereditary in the sense in which I formerly explained that term, there can be no doubt that it is often acquired. In the first place, bronchocele is endemic — prevalent in certain localities, and scarcely occurring elsewhere. And persons who, being previously well, go to live in those localities, often become affected with the complaint : and persons who mi- grate /ro'm those localities, having the complaint upon them, sometimes get rid of it by the mere change of residence. The physical circumstances of the places thus selected by the disease have been studied with the natural hope of discovering what the cause may be of an effect so singular. Some morbific quality of the air v^'as long suspected. The habitats of the unknown cause of bronchocele appeared at first sight to be very much like those of the mala/ia. Goitre abounds in the hollows of many mountainous districts ; among the Alps, for example, and in the Pyrenees This was notorious to the ancients. Juvenal asks — Quis tumidum giittur miratur in Alpibus? And it is in the deep, close, and humid valleys of Switzerland, which lie at tnt feet of, and between, high mountains, that bronchocele is most common. Several writers, who have personally investigated this subject in places where goitre is rife, concur in the belief that it depends upon insalubrity of the air, ari'^ing from the pe 472 CRETINISM. culiarities of the situation. They affirm that it is most frequent in low, damp, con- fined spots, wliere the stagnant atmosphere Ls seldom stirred by wholesome breezes ; and where the sun, in summer, has great power. Dr. James Johnson remarks, "We find in the Valais (one of the Swiss cantons) and in the lower gorges or ravines that open on its sides, both cretinism and bronchocele in the most intense degrees. As we ascend the neighbouring mountains, cretinism disappears, and goitre only is observed. And when we get to a certain altitude, both maladies vanish." Dr. Reeve, again, states thai all the cretins he saw were in adjoining houses in the little village called La Batia, situated in a narrow corner of the valley, the houses being built up under ledges of the rocks, and rll of them very filthy, very close, very hot and miserable habitations. In villages situated higher up the mountains, no cretins are to be seen. The cretinism mentioned in these quotations is a strange and melancholy disease: a sort of idiocy, accompanied by (and doubtless dependent upon) deformity and im- perfection of the bodily organs. The mental affection exists in all degrees, from mere obtuseness of thought and purpose, to the complete obliteration of intelligence. Many of the cretins are incapable of articulate speech; some are blind, some deaf, and others labour under all these privations. They are mostly dwarfish in stature, with large heads, wide vacant features, and goggle eyes, short crooked limbs, flabby muscles, and tumid bellies. The worst of them are insensible to the decencies of nature, and obey, without shame or self-restraint, every animal impulse. In no other class of mortals is the impress of humanity so pitiably defaced. More recent and extensive observation of the localities infested b}^ goitre have ren- dered it improbable that the disease derives its origin from any deleterious properties of the air. Certainly it is not owing to any thing that is common to all mountain- ous countries. Some parts of Switzerland are free from it. So are the Highlands of Scotland. It is met with also in flat situations — as in Norfolk. I have seen several cases of it in Cambridgeshire, which is a venj flat country'. Tn one village in particular, about five miles from Cambridge, it is extremely common. There are some striking facts collected by the celebrated and philosophic Humboldt, which go to show that the prevalence of bronchocele does not depend on any particular configuration of the surface of the earth, nor on any peculiar condition of the atmosphere. He tells us that in South America bronchocele is met with, both in the upper and the lower course of the ^Magdalen river ; and in the flat high country of Bogota, 6000 feet above the bed of the stream. The first of these regions is a thick forest ; while the second and third present a soil destitute of vegetation. The first and third are exceedingly damp ; the second peculiarly dry. In the first the air is stagnant : in the second and third the winds are impetuous. In the first twd the thermometer keeps up all the year at 22 or 23 degrees of the Centrigrade scale : in the third it ranges between 4 degrees and 17. The researches of Mr. M'Clelland, in India, lead to the same conclusion. He found goitre extremely frequent in one portion of the district which he surveyed, while the other portion was almost exempt from the complaint, "although an equality of moral as well as physical circumstances appeared to affect the whole. The external Alpine characters of the province are the same in every part ; the inhabitants all belong to the same tribes of Hindoos, and are subject to fevver irregularities in their mode of life than any other people in the world." The dilFerent localities of the villages, in the portion where goitre was not preva- lent, he describes as being as diverse as can well be imagined. " Some are erected on narrow ridges, others in deep valleys, surrounded by abrupt and lofty mountains ; others on rugged declivities between lofty peaks on one side, and deep ravines on the other, into some of which the sun can scarcely penetrate. The different altitudes of these villages vary from 2000 to 6000 feet." Facts of this kind have turned the attention of scientific inquirers towards the only other obvious source to which the disorder could, with probability, be attributed, viz., [He quality of the ivater used for drinking. Wherever goitre prevails, the popular belief assigns it to the water, as a cause : and the more accurately the search is pro- 'S'Tuted, the more strength and Hkelihood does this supposition acquire. Its very CRETINISM. 473 universality is a presumption in its favour. The disease was formerly ascribed to the use of snoiv water : a notion which originated, I imagine, in its frequent occur- rence in Alpine regions. But the people in almost all the valleys of Switzerland drink the water that comes from the Glaciers ; while bronchocele is known in some of the valleys only. It prevails also in certain spots where pump water is used, and there the people accuse the pump water of producing it. Besides, goitre occurs in other countries, where the snow never lies long, as in Derbyshire ; and even in Su- matra, where there is no snow. Dr. Bally, a native of a goitrous district in Switzer- land, beheves that bronchocele is caused by certain zvaters, which issue from the hollows of rocks, trickle along crevices of the mountains, or rise froia the bowels of the earth. And in support of that opinion he refers to some fountains in his own neighbourhood, the drinking of the waters of which will produce, or augment, goi- trous swellings, in eight or ten days. Such of the inhabitants as avoid these waters are free, he says, from goitre and cretinism. In Captain Franklin's narrative of his expedition to the shores of the Polar sea, there is the following statement, made by his fellow-traveller Dr. Richardson : — " Broncliocele or goitre is a common disorder at Edmonton. I examined several of the inhabitants afflicted with it, and endeavoured to obtain every information on the subject from the most authentic sources. The following facts may be depended upon : — The disorder attacks those only who drink from the water of the (Saskatchanan) river. It is, indeed, in its worst state, confined almost entirely to the half-bred women and children who reside constantly at the fort, and make use of river water, drawn in winter, through a hole made in the ice. The men, from being often from home on their journeys through the plain, where their drink is melted snow, are less affected : and if any of them exhibit during the winter some incipient symptoms of the complaint, the annual summer voyage to the sea-coast generally effects a cure. The natives who confine themselves to snow water in the winter, and drink of the small rivulets which flow through the plains it) the summer, are exempt from attacks of this disease. A residence of a single year at Edmonton is sufficient to render a family bronchocelous. Many of the goitres acquire great size. Burnt sponge has been tried, and found to remove the dis- ease : but an exposure to the same cause immediately reproduces it. A great proportion of the children of the women who have goitres are born idiots, with large heads, and the other distinguishing marks of cretins. I could not learn whether it was necessary that both parents should have goitres to produce cretin children." We are able even to go a step further, and to announce a probable conjecture as to the specific quality of the suspected water. Bronchocele is very prevalent in Nottingham and its neighbourhood ; and the vulgar there ascribe it (so Dr. Manson informs us) to the hardness of the water. You know that the rough practical dis- tinction between soft and hard water is that the former dissolves soap, while the latter decomposes it. The hardness is generally occasioned by the presence either of sulphate of lime, or of carbonate of lime. In the one case the remedy is to mix the carbonate of an alkali with the water; in the other you simply boil it. Now the well water in and about Nottingham is more or less hard, and unfit for the purpose of washing. Dr. Coindet, of Geneva, declares that the use of hard or pump water in the lower streets of that town brings on the goitre very speedily. At Cluses, on the Arve, numerous cretins and goitrous persons are seen in the streets : lofty clifts of limestone tower over the town, and through its caverns copious streams of water find a passage. The soil in the neighbourhood of Edmonton was found by Dr. Richardson to be calcareous, and to contain numerous fragments of magnesian lime- stone. In a Treatise on English Bronchocele, very recently published. Dr. Inglis states his belief tliat the presence of magnesian limestone always implies the co- existence of the disease. " Take (he says) that ridge of magnesian limestone run ning from north to south through the centre of Yorkshire, and margining the shires of Derby and Nottingham. All along that line we have goitre to a very great extent; whereas, on our diverging to either side, the disease is found to diminish." These scattered indications that the hurtful quaUty of the water is somehow de- rived froia its contact with limestone rocks, receive a powerful corroboraliou from *.\uf 2p3 474 CRETINISM. result of Mr. M'Clelland's minute and valuable inquiries, which were carried on in the province of Kemaon, south of the Himalayan mountains. I have not been able to obtain his book ; what I am about to tell 3'ou I take from a full and instructive notice of it in the fifteenth number of the British and Forcis^n Medical Review, Mr. M'Clelland finding goitre very abundant (as I mentioned before) in one great section of a district, and almost entirely absent from another section, set himself to find out in what other particulars these sections were distinguished from each other. He ascertained that they completely agreed " in external aspect, altitude, and cli- matology," but differed remarkably " in their geognostic relations ; and this distinc- tion was even traced down to the very villages in which the disease is found, with such perfect nicety, as to enable one almost to predict, « priori, on examining the rocks of a neighbourhood, whether the inhabitants are affected with goitre or not." It would be impossible for me to give you even an abstract of Mr. M'Clelland's numerous observations ; but I select one or two striking instances in favour of his opinion that the endemic prevalence of goitre is connected with the use of water im- pregnated with calcareous salts. One extremity of the long village Deota, which occupies half a mile of the foot of Durge mountain, is inhabited by Brahmins ; the other by Rajpoots and Domes. Of the first caste there are about twenty persons, all of whom are free from goitre. There are forty of the second, and two-thirds are affected, more or less. Of the third caste, forty-six in number, nearly the whole are goitrous. " To what cause can we ascribe the immunity of one caste of the inhabitants of this village, and the almost universal affijction of the other two castes? They are all alike well fed, and have little toil ; their land producing the requisites of life almost without labour. Differ- ence of caste does not here imply a diflerence of pecuniary circumstances, and con- sequently of the comforts of life. In these respects the three castes in this village are on perfect. equality. Nor will hereditary predisposition acquired by intermar- riages be sufficient to explain the interesting fact : for the affected parlies are con- fined to the Rajpoots and Domes, who cannot intermarry, while the Brahmins and Rajpoots may. The village is raised about one hundred feet above the level of the valley ; and the mountain, at the foot of which it is situated, rises with a gentle slope, and is not in this vicinity at all rugged. It is chiefly composed of transition limestone, and the village is erected on a conglomerated rock, composed of calcare- ous tuff, inclosing fragments of other rocks. There is a spring in the valley, about one hundred yards from the village, bearing on its first appearance the character of a mineral spring. The water bursts forth with strong ebulhtion, in the quantity of at least forty gallons in a minute, and agglutinates the sand and gravel by which it is surrounded, by the deposition of calcareous tuff. The temperature and quantity of the water are the same at all seasons. The former inhabitants of the village, aware perhaps of the noxious effects of this spring, had an aqueduct formed, by which water is conveyed into the Brahnn'n portion of the village from a distant source. The aqueduct having been suffered to get out of repair, the quantity of water it transmits is reserved exclusively for the Brahmins; except during the rainy season, wdien, the water being plentiful, the Rajpoots also use that of the aqueduct ; but the Domes have no alternative at any season but to use the water from the spring." I'he valley of Baribice is elevated 4000 feet above the sea. Its eastern extremity is composed of c/nyslafe, and in five villages, containing 152 inhabitants, there is not one goitre. The other extremity of the valley is partly composed of limestone ; and of lSi2 inhabitants, distributed in six villages, 70 are affected with goitre: but Duc3'gong, one of these villages, supplied with water from clayslate, has not a single case of the disease; while Agar, only half a mile distant, and containing .50 inha- bitants, has no less than 40; and of that number 20 are cretins. They use the v/ater wnich issues from an old copper-mine in limestone, and which contains carbonate of lime, and of soda, but no sulphate. Mr. M'Clelland affirms that in the course of his personal inquiries, which extended over 1000 square miles, and which were prosecuted without regard to any theory, no instan/'e occurred in which goitre prevailed to any extent where the ^illage.s were not situated on or close to limestone rock. CRETINISM. 475 [In the United States the disease is prevalent in many of the valleys siluuted in tlie moun- tainous regions of New Hampshire, Vermont, New York, Pennsylvania and Virginia ; many of these regions abound in limestone rocks. — C] Cretinism has a close, but an ill-understood, connection with goitre. Wherever cretinism is endemic, bronchocele never fails to be abundant. But bronchocele may- prevail in a place where there are no cretins. With but few exceptions, cretins are goitrous ; whereas many of those who have bronchocele are not affected with cre- tinism. The two disorders either spring from the same cause, requiring for their joint production that this cause should be in active operation : or, if they have sepa- rate causes, these frequently co-exist and act in combination. It is said, I know not with what accuracy, that when both parents are goitrous for two generations in suc- cession, the offspring, being in the third generation, are sure to be cretins. Cer tainly cretinism is most common where bronchocele is most common, and especially in mountainous places. It occurs in the Pyrenees as well as in the Alps, in the mountains of Syria, in the hilly parts of China, and in the Himalayan regions. Yet cretinism is confined within much more Hniited bounds than goitre. Saussure, Fo- dere, and Dr. Reeve, agree entirely as to the circumstances under which cretinism appears to be most commonly engendered in Switzerland. They say that the dis- ease is usually met with in valleys which are nearly surrounded by high and steep rocks, where there is but little circulation of air, and where the inhabitants are ex- posed to the direct rays of the sun, and to the reflection of them from the rocks ; and also to effluvia from marshes. It is in the filthy habitations built in these close, hot and humid situations, that cretinism abounds most. The children that ate taken away from the low valleys, and carried up, when young, into the high grounds, escape the disease ; or even get the better of it if removed soon enough. And the amendment is said to be perceptible even in a very few daj's. These facts have led many persons to conclude that cretinism, if not bronchocele, depends on some condi- tion of the uir. It appears to me probable that the exciting cause of both is the same, and that the local circumstances just now mentioned operate as predisposing causes only. Cretinism, as well as goitre, was observed, by Ramond, in the " open, well-watered, and well-ventilated valleys of the Pyrenees." There are some difficulties opposed to the implicit reception of the opinions formed by Mr. M'Clelland and by others, respecting the origin of these diseases. And the facts upon which those opinions are grounded, are not without apparent exceptions. Moreover, the actual substance which exercises or confers the noxious power, has yet to be ascertained. This etiological problem, so fufl of interest, is not solved. One step more, and probably one step only, remains to be taken. We look to the medical geologist, for its complete solution ; and I trust that, now, we have not long to look. The deleterious agent has been traced, with tolerable certainty, to water : and hence to some element of the soil washed by that water. And if what at present is probable only, shall hereafter be proved, — namely, that the hidden cause of goitre and of cretinism lurks in some chemical quality of man's natural beverage — it can scarcely be doubled that chemistry will be found ready to supply a simple and effec- tual corrective of the evil. This hope it is which makes it so important that medical men should be accurately possessed of the present state and bearings of the ques- tion ; and prepared to take advantage of every opportunity that may arise from its practical determination. For surely it would be a noble achievement of our art, and a signal blessing provided for hundreds of human beings yet unborn, thus to prevent the deformity, the discomfort, and sometimes the danger, of bronchocele ; and to forbid, in its very source. and fountain, the more hideous and loathsome disfigurement of mind as well as of body that distinguishes the wretched cretin. i ought, perhaps, to tell you, that other causes, many of them very vague and un satisfactory, have, at different times, been assigned. Thus Valentin supposes the disease to be more common in women than in men, simj)ly because women more frequently have the neck uncovered. It has been affirmed that young females who have taken the veil in Catholic countries have lost their goitres in consequence of the change then made in their costume ; and a medical man in Guatimala asserts that 476 CRETINISM. the same infirmity has sensibly diminished among the men in that part of the world, since cravats became fashionable there. These views of the matter accord with some whimsical notions entertained by the late Sir Anthony Carlisle. He held that the chief purpose of the thyreoid gland was to protect the delicate organ of the voicu from the injurious influence of cold ; and he consequently regarded the tumour of bronchocele as being rather of a sanative than of a morbid nature. He looked upon it as an additional greatcoat thrown over the important instrument of speech, in circum- stances of extraordinary need. His theory agrees with some of the facts on which other theories, not perhaps more plausible, have been founded. Thus, although snow water may not be, indeed I may say certainly is not, the cause of bronchocele from any pecuhar quality that belongs to it, yet the disorder is confessedly frequent in many places where snow water is habitually drunk ; i. e., as Sir Anthony would have reasoned, where very cold water is frequently drunk ; the swelling being a provision of nature to obviate the hurtful effects which might else be produced on the larynx by these cold potations. The summer change for the better, described by Dr. Richardson, consists also with the same theorj'^ ; which would suggest the covering an incipient bronchocele continually with warm clothing, such as flannel, to check its growth, to obviate its necessity, and so gradually to occasion its subsi- dence. And this plan is mentioned, I see, by Bouillaud, among the curative indi- cations. I mention these theories, not because I have any faith in them myself, but as being curious specimens of the manner in which the human mind strives to account for obscure phenomena ; and as showing how readily facts may be called '»,nd pressed into the service of very slender and infirm hypotheses. One very important point in the treatment of bronchocele is obvious ; the removal of the patient, if that can be done, from the infected locality. When this has been effected, or when the disorder occurs sporadically, as it sometimes does, we may administer drugs with better hope and advantage. Now a great variety of empirical remedies have been recommended for the cure of bronchocele, concerning most of which it would be a waste of time for me to speak at all. The remedy which, as an internal medicine, has of late years superseded all others, and acquired the repu- tation of a specific against goitre, is iodine : and it certainly has a remarkable influ- ence over the genuine unmixed form of the disease, whether endemic or sporadic — the hypertrophied gland ; yet it does not, perhaps, merit the title of specific in the same absolute sense as that in which we say that bark is a specific for the ague, or sulphur for the itch. Dr. Coindet, of Geneva, was the first who made this remedy extensively known. Dr. Slraub, however, of Hofwyl, has laid claim to the priority of its use. Probably that happened in this matter, which has often happened in others, viz., that the slate of knowledge was ripe for such a discovery, and it was made by each of these physicians independently of the other. Dr. Coindet's name, however, has been inseparably connected with the application of iodine to the cure of bronchocele, in a work which, if he had no other claim to be remembered, would immortalize his lOcmory ; — I mean Sir J. Herschel's profound and beautiful Dis- course on the Study of Natural Philosophy ; — a book which I should advise those among you who have not already read it, to make themselves master of as soon as they have leisure to do so. He thus strikingly illustrates an observation of his own, that mighty benefits often accrue to science from the casual experience of even un- scientific or iUiterate persons. "A soap manufacturer remarks that the residuum of his ley, when exhausted of the alkali for which he employs it, produces a corrosion of the copper boiler, for which he cannot account. He puts it into the hands of a scientific chemist for analysis: and the result is the discovery of one of the most singular and important chemical elements — iodine. The properties of this being studied, are found to occur most appositely in illustration and support of a variet}' of new, curious, and instructive views then gaining ground in chemistry; and thus exercise a marked influence over the whole body of that science. Curiosity is excited ; the origin of the new substance is traced to the sea plants from whose ashes the principal ingredient of soap is obtained ; and ultimately to the sea-water Itself. It is thence hunted through nature, discovered in salt-mines and springs, and I TREATMENT. 477 pursued into all bodies which have a marine origin : among the rest into sponge. A raedical practitioner, Dr. Coindet, of Geneva, then calls to mind a reputed remedy for the cure of one of the most grievous and unsightly disorders to which the human species is subject, the goitre ; which infests the inhabitants of mountainous districts to an extent that, in this favoured land, we liave happily no experience of, and which was said to have been originally cured by the ashes of burnt sponge. Led by this indication, he tries the effect of iodine on that complaint, and the result establishes the extraordinary fact that this singular substance, taken as a medicine, acts with the utmost promptitude and energy on goitre, dissipating the largest and most inveterate in a short time, and acting (of course, hke all medicines, even the most approved, with occasional failures) as a specific, or natural antagonist, against that odious deformity." It is curious enough, and marks the accuracy with which the effects of remedies may be observed, that not only had burnt sponge been found efficacious in removing bronchocele, but the bladdervvrack also, the fucus vesiculosus, the plant that, with others of the same family, yields the soda wherewith the iodine was found combined. Dr. Gairdner, who v^'as the first I believe in this country to write on the effects of iodine, accounts for the frequent failure of even large doses of the burnt sponge, by showing that it was much adulterated with charcoal. Dr. Manson, of Nottingham, has published the following tabular statement of the results of the employment of iodine by himself. He had treated one hundred and sixteen patients, of whom fif- teen were men, and the rest women. Of the fifteen men, ten were cured, three were improving and under treatment at the time of his publication, one was dismissed for irregular attendance, and one was much reheved. Of the one hundred and one women, sixty-six were cured, nine much relieved, two received no benefit, ten were discharged for irregular attendance, and fourteen were improving under treatment. Of the whole one hundred and sixteen, therefore, there were seventy-six positive cures, or two-thirds of the entire number; and only two positive failures. Dr. Coin- det was successful in about the same proportion of cases. This is strong evidence of the power of the remedy. Dr. Manson found that in some, but not in all indivi- duals, after the preparations of iodine had been given internally for a certain time, they were apt to occasion headache, giddiness, sickness of stomach, with some degree of languor, and inaptitude for exertion. His plan in such cases was to suspend the use of the medicine, or to reduce the dose. The following effects of the iodine are stated by Dr. Coindet as having occurred in his practice : — Acceleration of the pulse, palpitation, dry cough, watchfulness, marasmus, and prostration of strength. Sometimes swelling of the legs, tremors, painful hardness of the bronchocele, dimi- nution of the breasts, or a remarkable increase of appetite supervened ; and he adds, that in almost all the instances which he had observed, a very rapid diminution, or a disappearance more or less complete, took place, during these symptoms, of even hard, bulky, and old bronchoceles. His doses varied I'rom somewhat less than a grain to somewhat more than a grain and a half. This was certainly, as Dr. Manson has suggested, too large a quantity of this powerful drug for the generality of patients. The management of the remedy is now belter understood. I have never seen any of tlie unpleasant consequences enumerated by Dr. Coindet. These practitioners gave the iodine in the form of a tincture. But this is a bad mode of exhibiting it " for the tincture is decomposed in any aqueous menstruum, and the vidine thrown down to the bottom. Under such circumstances the patient may at one time get no iodine at all, and at another time a dangerous dose : for you are aware that iodine is an ac- tive irritant poison. But if you mix iodine with iodide of potassium, it is then held in solution : and this is the form in which it is now commonly given. In the last edition of the Pharmafioposia there is a Liquor Fotassii lodidi compositus, made by dissolving five grains of iodine, and ten of the iodide of potassium, in a pint of distilled water. This will doubtless, in future, be much prescribed. It is a dilute preparation. There is one grain of iodine in four ounces of the liquor. An ounce would, therefore, be a very sufe dose, but you may begin with a couple of drachms, and hxcrease the quantity, if need be, gradually : for not only Dr. Manson, but Dr Copland also, who states that the remedy has been very successful in his hands 478 BRONCHOCELE. adv^ocates small, unirritating, what are sometimes called alterative doses. Simple friction is said to have had the effect of diminishing the tumour; and friction with some ointment or Jiniment containing iodine should be employed whenever the inter- nal exhibition of the remedy is contra-indicated: or in addition io its internal use. There is an authorized form for that purpose also in the Pharmacopoeia — the Uru gucntinn lodini Composition. A small portion of this may be rubbed upon the tumour night and morning. I need not add that besides great care in watching for the specific ill efft^cts of the iodine upon the system, no less care is to be taken in correcting the state of any other function which may be faulty, and in improving the general health. Such is the best medical treatment of bronchocele ; and such is the plan which you will always do well to make cautious trial of in the first instance : and with re- spect to surgical treatment I may observe, that so long as the disease is merely a deformity, so long as it does not interfere with any of the important functions of the body, nor produce serious discomfort — does not distress the respiration by pressing upon the trachea, nor impede deglutition by pressing upon the oesophagus, nor de- range to any great degree the circulation through the head by pressing upon the great blood-vessels of the neck, nor grievously encumber the patient by its weight — we should not be justified (in my opinion) in performing or advising any surgical operation for the removal or the diminution of the tumour. Of such operations the three principal are, extirpation of the whole gland ; the passing a seton through the tumour, and so exciting suppuration in it, whereby its substance is broken down and destroyed ; and, tying the arteries which supply it with blood. The first of these methods, extirpation, has been performed when the wen was small ; but few patients imder such circumstances would consent to the operation ; and few surgeons would now-a-days, I presume, advise or undertake it; and in cases where it might seem more expedient, that is, where the swelling is large, and suffocation is threatened by its pressure on the trachea, the execution of this measure would be exceedingly diffi- cult and dangerous ; for the arteries are so much dilated in these cases that perilous hemorrhage might be expected from their division, especially when their close vicinity to the carotids is considered. Such large goitres come to involve also, by their lateral extension, very important nerves there situated. In one case where excision was attempted, the hemorrhage was so alarming that the surgeon was obliged to desist in the middle of his task ; and the patient actually died of hemorrhage a few days afterwards. I believe that this operation may be considered as wholly abandoned by surgeons in the present day. The introduction of a seton into the tumour has been more successful. This prac- tice was revived som.ewhat more than twenty years ago by Dr. Quadri, of Naples ; who supposed, indeed, that he had been the first to devise it. You will find an account of his mode of proceeding in the tenth volume of the Medico-Chirurgical Transactions, by Dr. Somerville. The seton is passed through the substance of the gland, and retained there a considerable time ; the chief caution necessary is to avoid the enlarged blood-vessels. Dr. Quadri affirms that the larger trunks of the thyreoid arteries will not be endangered unless the seton needle be passed so deeply as almost to touch the thyreoid cartilage ; and that hemorrhage from any of the branches of those arteries that may be wounded when the seton is inserted more superficially, will not be attended with hazard. This plan was followed in one case by ulceration and sloughing, and the patient died. An example of the success of this treatment occurred in the practice of Mr. James, of Exeter ; the tumour was almost entirely removed, and the patient was for some time in London for the pur- pose of showing himself to the medical men here. But he also had passed through a good deal of suffering and peril. The expedient of tying one or more of the thyreoideal arteries, and so starving the tumour, has been attended with varied success. It has been done on the conti- nent ; and several times in this country : there is a case of it by Mr. Coates, of Sahs- bury, in the same volume of the Medico-Chirurgical Transactions. His patient Wds nmch relieved for a time, and supposed herself cured. But the tumour gradually returned, and caused her death by suffocation. Sir B. Brodie has also performed a I CYNANCHE PAROTID^A. 479 «milar operation ; and I have myself seen one very satisfactory instance of the rame thing, the operation having been done by the late Mr. Earle, in St. Bartholomew's Hospital. The patient was a young woman with an immense bronchocele, which for some time previously had obstructed her breathing, and of which the effect on the trachea seemed to be every day increasing. There was loud wheezing, and great difficulty of respiration, and cough, and extreme emaciation : and it was plain that the girl must soon die suffocated if nothing were done for her relief. One of the arteries, I think the superior thyreoidal, was tied, without much difficuhy, on one side. After the operation, the tumour on that side shrunk considerably ; the distress of breathing was removed ; and the patient presently recovered so much of her former strength, and flesh, and comfort, that she was unwilling to have any thino- more attempted, and left the hospital. After some time, however, she came back ao-ain of her own accord, and requested that the artery on the other side might be tied also. This was accordingly done, and a further reduction of the tumour took place. The shrinking, however, if I remember rightly, was not so striking or complete after the second operation as after the first : but the patient was certainly rescued, upon the whole, from imminent death, and put into a condition of ease and at least temporary safety ; the tumour that remained constituting merely a deformity. I never heard of her afterwards. In a case very similar to this, related by Mr. Crawford in the Cijdopsedia of Praclkal Medicine, Mr. Wickham, of Winchester, tied one of the arteries, with much immediate, but no ultimate benefit. The goitre gradually dimin- ished for about six weeks, and then (in consequence, I presume, of the establish- ment of a collateral arterial circulation) it as gradually enlarged again till it was as big as ever. Of these surgical expedients there is not one, of which the average results have been sufficiently prosperous to warrant its repetition, except in cases where life is put in jeopardy or made miserable by the swelling; and where other methods, and particularly the treatment by iodine, have been tried, and have failed. One excep- tion, perhaps, I should here make. The tumour sometimes evidently contains a quantity of fluid, either in one of its enlarged cells, or in a distinct cyst. Now the cell, or cyst, may in such cases be punctured, and the contained fluid let out, with- out much risk. This was done in one instance by.my colleague, Mr. Arnott. He kept the orifice open ; and the cyst shrank, and Avas at last obliterated, and the wo- man was much gratified by this diminution of her load. LECTURE XLIV. Cynanche Parotidxa. Spontaneous Salivation. Aphthx. Cynanche Tonsillaris. The Greek writers on medicine apply the terms awwyxn and xway;^?; to inflamma- tory affections occurring about the throat, and more or less interfering with the func- tions of respiration and deglutition : and the Latins employed the word angina in nearly the sanrie sense. CuUen, in his Nosology, has made a genus of Cynanche, although the diseases which he has included in that genus have but little connection, except that the parts they occupy lie near to each other. Some of them, indeed, have their seat in different, though almost contiguous, portions of the same mem- brane ; and are apt, sometimes, on that account, to pass one into the other. In general they are alHed rather by proximity of situation than by community of symptoms. I mention these things, because there being a great disposition in the present day to rr-name diseases, and to affect a more precise and scientific nomenclature than sufficed for Cullen, if I adopted the more modern appellations without adverting to the old ones, which have been current so many years, you might experience some difficulty in your reading, in determining wha; disease was intended, when it was merely namrd. For my own part, I think there i? much inconvenience in altering 480 CYNANCHE PAROTIDiEA. the established nomenclature ; and especially in changing such arbitrary terms as, though they may not be scienlijic, are yet definite, and convey no erroneous notions respecting the nature of the disorder. I shall give you, however, in most cases, both the old and the new denominations. Now one of the maladies in Dr. Cullen's genus Cynanche — though not the first in the order he follows — is cynanche purotidsca. It is an inflammatory affection of the salivary glands, and of the parotid gland in particular. Accordingly it is called parotUis now-a-days. It is not, however, mere inflammation of the parotid, arising from any cause whatever; and therefore parotitis, unless some epithet be added, is less exact than cynanche parotidsea. The vulgar have given it just as good an arbi- trary name as the learned ; and they call it, in this country, the mumps. AA'ith the Scotch it is, I believe, the branJiS. The disorder need not detain us long. The parotid swells ; tumefaction takes place beneath the ear ; and if the submaxillary and sublingual glands are not impli- cated in the outset, they soon participate in the tumefaction, in most instances ; so that the swelling extends from beneath the ear along the neck, towards the chin, and the swelled parts are hot and painful, and very tender when touched. The aspect of the patient becomes curiously deformed. Sometimes one side only is afl^ected ; sometimes both sides at once ; but most commonly of all, first one side and then the other. These local symptoms are attended with slight fever. But the only func tion that is materially affected is the motion of the lower jaw, which is impeded by the swelling. The inflammatory condition almost always terminates after a few days, in resolution, under the use of the antiphlogistic regimen, and the application of external warmth. The disease reaches its height in about four days, and then begins to decline ; and its whole duration may be stated, on an average, at eight or ten days. This complaint often prevails epidemically : when it afTects one person in a family. or school, it usually aflects several others, simultaneously or in succession, ft chiefly attacks children and young persons. There can be no doubt that it spreads by con- tagion ; and it seldom happens that the same person is twice affected by the mumps. These are remarkable circumstances, and give the malady a peculiar and specific character. I do not dwell upon them now, because they beking also to a very interesting group of diseases, M-hich will require to be particularly considered hereafter. Another curious circumstance connected with the disease, and one which has some bearing upon its treatment, is that, in many cases, upon the subsidence of the swelling of the neck and throat, and particularly when it subsides quickly, the testir cles, in the male sex, become swollen and tender, and the inummx in the female. It is said, but I do not know whether the observation be constantly true, that the testicle, or the breast, of tJie same side Avith the inflamed parotid, suffers. Some- times the testicle wastes a-vay after the swelling recedes; a circumstance which is known occasionally to happen when inflammation of that part arises from other causes. This, however, is not usual. In general the inflammation subsides and ceases in the one gland as it does in the other; the swelling is neither very painful nor long continued. But sometimes a more serious transference takes place, from the testicle to the brain : this I have never witnessed ; but then, to say the truth, I have not often been called upon to treat the mumps, and my personal experience of it is limited. I find it stated that the metastasis to the testicle is considered as rather a fortunate circumstance, because it serves as a sort of protection against metastasis to ihe brain ; but I suspect this to be a mistake. Inflammation of the brain, or of its membranes, has sometimes occurred on the disappearance of the parotid swell- incf : but it has much oftener supervened, I believe, upon the retrocession of the inflammation from the testicle or mamma. It is said also that the inflammation sometimes rtr-iurns from the testicle to the parotid, and back again ; oscillating thus two or three times between the two glands. Fortunately, the metastasis to the brain iS much more rare than that to the testicle. The treatment of the mumps is simple. It consists in the observance of the anti- pnlogistic regimen ; mild diaphoretics ; laxative medicines, if the head aches, or the SPONTANEOUS SALIVATION. •^l' bowels are confined ; and warm fomentations, or dry warm flannel, to the neck and throat. The tendency observed in this complaint to a change of place — to metastasis to more important organs — forbids us from using very active measures to check or fiiibdue the inllammalion. Nor are such measures necessary. We are not to bleed, nor violently to purge such patients, nor to apply cold to reduce the sweUing. Jjuckily, hot applications are not only the most safe and proper, but the most grateful also to the feelings of the patient. If suppuration should ensue — which is unusual and unlikely, but which sometimes does occur from extension of the inflammation to the neighbouring areolar tissue — poultices must be substituted for the fomentation. Warm apphcations, and rest in the horizontal posture are to be recommended when the inflammation leaves the salivary glands, and attacks the testicles ; or if the pa- tient will not, or cannot, lie up, the testicle must be supported by a suspensory bandage — a bag-truss. If the inflammation of the testicle or mammae be very vio- lent, we must apj)ly leeches, and afterwards poultices ; but this will not often be required, or advisable. Finally, if the inflammation should fly to the brain, we must lay aside our previous caution, and treat the disease in that active manner which the inflammation of so important a part of the body demands. No worse metastasis can occur on the cessation of the phrenitis. I have fully spoken heretofore of the treat- ment to be pursued in that disease, and I have nothing to add respecting it now, except that it may be right as an auxiliary expedient, to try to reproduce the inflam- mation in the parotid, or testicle, or mamma, by irritating applications — mustard poultices, for example — in the hope of thus producing what is called revulsion, and of diveriing the disease from the brain to the part which it previously occupied. You know that there is another specific form of parotitis, which is apt to be induced by mercury. Of this I have already spoken. When it is severe, it may be treated by leeches, without any dread of such metastasis as occurs in the mumps. It is usually, though not always, accompanied by a profuse discharge of the secre- tion proper to the glands affected ; and it is attended also by sponginess and swell- ing of the gums. 1 presume that when inflammation of these salivary glands is not attended with ptyalism, the parenchyma of the gland, or the areolar tissue which enters into its composition, is principally affected ; and that when there is much sahvation, the membrane lining the secretory and excretory ducts is implicated. We see the same distillations in other analogous organs. Profuse ptyalism sometimes occurs without any obvious cause, and is then said to be idiopathic, or spontaneous : and this is a circumstance which it concerns you to be aware of, both as practitioners and as medical jurists. The same tenderness and swellijig of the salivary glands, the same copious secretion and excretion of saliva, nay, even the same fetor, or a smell which can scarcely be distinguished from it — the same collection of symptoms which is familiar to you as indicating the specific action of mercury upon the human system — will arise sometimes (but very rarely) when not a particle of mercury has been administered. Several other substances are well known to have the occasional efftit of producing an increased, and even a profuse flow of saliva: preparations, for example, of gold, of copper, of antimony, and of arsenic. The cttstor oil is said to ha^e sometimes the same consequence Digit? is certainly has ; and the iodide of potassium ; and sometimes, I believe, opium. Now and then ptyalism is met with as a symptom among others, of preg- nancy. Occasionally it results from some local irritation within the mouth ; from a decayed or misplaced tooth. But what I principally wish to call your attention to is the fact that salivation may occur as an idiopathic complaint. In the twenty- sixth volume of the London Medical and Physical Journal, there is an instance of it described by Mr. Davies, in which two or three pints of saliva were discharged daily for some time. This flux at length ceased under the use of laxative medicines In the second volume of the Transactions of the College of Physicians is an extra- ordinary example of the same thing, related by Mr. Power. A young lady, of six- teen, spat from sixteen to forty ounces of saliva daily for upwards of two years. Mr. Power believed that the ptyalism in this case was originally excited by wool, whicii he found, in a fetid state, in her ears. In the Revue Medicale there is an acccuni 31 2q 482 APHTHA. given of a patient who was cured of a spontaneous plyalism after spitting nine pints daily for nine years and a half. You may see another instance, as related by Dr. Prout, in the old series of the Jinnals of Philosophy. Dr. Pereira states that he has seen a dozen such cases; and he describes one which was fatal, not from the ptyalism, however, but from slouohintj of the cheek: and this is no uncommon cir- cunistante. In certain cases of idiopathic inflammation and ulceration of ttie gums or cheeks, from some constitutional unsoundness, there may be extensive sloughing ptyalism, and a very offensive odour, rnuch resembling that which mercury pro- duces. I have met Avith one example only of well-marked spontaneous ptyalism ; and some of its circumstances were so peculiar, that they may be worth relating. 1 was taken out to Bayswater, by a medical friend, in the beginning of the year 1833, to see a little girl, ten years old, who had been in a state of salivation from the 5th of November in the preceding year. Up to that time she had been a heakhy lively child, with nothing very remarkable about her, except that she Avas habitually sub- ject to profuse perspirations, which had a very acid smell ; so that the washerwoman was always aware which were her clothes, when she came to wash them, by this smell. She then sudden!}-- became indisposed, had a httle headache, and began to spit a good deal. This was noticed by her mother, and pointed out to her medical attendant, before airy medicine was given her ; and mercury, on that account, was religiously withheld. But in spite of all treatment the ptyalism went on increasing. When I saw her she was spitting three pints of sahva in twelve hours : transparent, rather dark-coloured, and with a small quantity of foam on its surface. There was nothing amiss with her teeth, or her gums, and no fetor of the breath. She was greatly emaciated, and resembled, in some respects, a person worn down by diabetes. From the very commencement of the spitting, the acid perspiration had ceased, and even the vapour had failed to make her sweat. A great variety of remedies were tried, under Dr. Nevison's superintendence, but without the least good effect. At last came the visitation of the influenza, in April of that year. The girl became severely affected by that disorder; and thereupon the salivation disappeared, and has not returned. I heard to-day that she is in excellent health. Should you meet with cases of the same kind, you will search for some cause of irritation in the neighbourhood of the salivaiy glands, and especially in the state of the teeth and gums ; and finding none, you will seek further for the cause of the salivation in some deviation from the natural condition of one or other of the principal functions of the system : and you will regulate your treatment acce-dingly. I do not know of any specific plan of cure to be recommended : but it is certainly of im- portance that you should be acquainted with the fact, that ptyalism sometimes exists as a separable and independent malady. Astringent washes are found, sometimes, of service ; a solution of alum, or the infusion of catechu. Before I proceed to the diseases pertaining to the interior of the fauces and throat, let me take this opportunity of saying a few words in respect to aphthse. They form the characteristic symptom of an especial disease of infancy: and they are apt to occur in the course of other diseases in adult age; and are then of some im portance as guides in forming our prognosis, and even in determining our plan of treatment. AphthfB consist in small, irregular, but usually roundish white specks, or patches, scattered over the surface of the tongue, and the lining membrane of the cavity of ^he mouth and fauces; the angles of the lips, the cheeks, the palate, the pendulous velum, the tonsils, the pharynx. They look like little drops of tallow, or morsels of curd, sprinkled over those parts; they project a little above the surrounding sur- face ; and, in fact, they are mostly formed by elevated portions of the mucous epi- dermis, covering a small quantity of a serous or gelatinous fluid, which separates the epidermis from the subjacent corium. These portions of the epidermis detach Jiemselves, and fall off; leaving behind them a reddish raw-looking surface, or sometimes a foul and ash-coloured spot : and successive crops of these aphthae are .ipt to be formed. Noxv children in arms who exhibit these aphthae, are said to have the thrush APHTHAE. 483 This occurs at an early age ; seldom, or never, I believe, after the period of lacta- tion is over. The spots occasion some inconvenience in themselves — the mouth is rendered hot and tender by them. The child may be eager enough to take the breast, but is observed to do so with pain and wailing whenever the mouth is applied to the nipple, and attempts to suck or to swallow are made. But these aphthae, thus occurring in infants, are attended with other symptoms of disorder : such as drowsiness, sickness, diarrhoea, and some feverishness. And 1 believe, a general notion prevails, that the same aphthous condition which is visible in the tongue and mouth, pervades, in such cases, the whole of the ahmentary canal. But this must be a mistake. That some morbid condition exists throughout that tract is highly probable, but true aphthcE can only form on those mucous surfaces which are provided with a continuous epidermis. This erroneous notion has been strengthened, perhaps, by the observation of aphthous spots on the pharynx and oesophagus. The complaint sometimes appears to be the result of improper diet, in children brought up by hand; or of milk of a bad quahty, from an unhealthy or in- temperate nurse. It generally lasts eight or ten days. It is not attended with much danger, except in certain cases, when the surface is left brown or bluish after the loosening and separation of the crusts. In such cases, the local affection is apt to run into a bad kind of gangrenous ulceration, and the discharges from the bowels become slimy and shreddy. In almost all instances of the thrush in children, there is acidity of stomach present. Care, of course, is to be taken to discover and to correct any error of diet ; and any unwholesomeness in the quahty of the food. And antacids are to be administered. I know of no form of medicine better adapted to remedy the diarrhoea of infants than the pulvis sodse cum hi/drai'gijro of our hospital Pharmacopoeia ; composed of two parts of the pulvis cretae compositus, two parts of the dried carbonate of soda, and one part of hydrargyrum cum creta. From three to five grains of this powder may be given thrice daily : and for the local affection of the tongue and mouth, the mel boracis is a capital application. It may be painted on the aphthous parts with a camel's hair pencil. Aphthce occurring in adults, in the course of other diseases, are often the har- bingers of dissolution. They denote considerable debility ; and they point out the propriety of sustaining the patient's strength, by bark, wine, and nourishing food. It is remarkable how treatment of this kind will sometimes tell. I had a patient last summer who lived for some months, and in tolerable comfort, after a second attack of apoplexy. Every now and then he would have a crop of aphthae appear, which was always an admonition to us that he not only would bear, but that he required some tonic. A more generous diet, with bark, would dissipate them in a day or two. Borax is an excellent application for aphthse, whether they occur in adults or in infants. I have known it afford great comfort to patients who were in the last stage of plithisis, and to whom the aphthous state of the mouth was a source of consider- able distress. Equal parts of mel boracis, and syrup of poppies, make a good form. Or an agreeable as well as useful gargle may be made by mixing two drachms of borax, with an ounce of mel rosae, three ounces of decoction of quince seeds, and four ounces of water. Aphthae seem sometimes to depend upon mere derangement of the stomach. A nobleman who is well known' as a bon vivant, can never eat shell-fish (so I am told by his physician) without finding, within two hours, that his mouth is full of aphthae. Even lobster-sauce will serve him thus. I look upon this as a sort of internal urticaria. [The disease of the mouth occurring in infants duririgj the period of suckling, in wliich the tongue, and the inner surface of the lips and cheeks are covered, to a greater or less extent, with minute portions of a white matter resembling curd — and which constitutes the tnugttel of tlie French writers, the thrush or children's sore mouth of nurses, and the aphthcB lactumiiixi and aphtha infantiles of the older physicians, is evidently a very distinct affection from the aphtha which occurs in the adult as well as in the infant. The first depends upon an ery thematic inflammation of the mucous membrane of tlie mouth, in which an altered seoro 484 APHTHAE. lion, in the form of small and curd-like particles or flocculi, or, as in other diphtheritic inflammations, of large patches of a soft pseudo-membranous matter, takes place upon the surface of the inflamed membrane. Upon the separation of these morbid exudations, the membrane beneath is found to be smooth, and without any solution of continuity. According to Guersent, the curd-like exudation is deposited beneath the epithelium, and its separation is consequent upon the rupture of the latter; Plumbe is of a similar opinion ; Guyot and Bil lard, however, never saw it, excepting upon the surface of tlie epithelium, and this accords Avith our own experience. In mild cases, the inflammation of the mouth quickly disappears, the particles of curdy matter becoming detached, fall oiT, and leave the membrane beneath of a smooth and healthy appearance. In other cases the inflammation continues for a greater length of time with little abatement: the spots of curd-like matter increase in number, and, occasionally, form by their union large patches, often of considerable thickness — these patches, sooner or later, become detached and fall off, and their place is quickly supplied by a new exudation : and this separation and renewal of the patches continue as long as the inflammation lasts. In some instances, the patches upon the tongue, lips, and cheeks, coalesce, and the whole of these parts become coated with a whitish, granulated crust, which not unfrequently extends into the fauces, pharynx, and, occasionally, into the larynx. In situations where a number of children are crowded together, in ill-ventilated apart- ments, the patches of exudation acquire often a dark colour, the breath of the infant becomes fetid — the submaxillary glands enlarged and painful, the face sM-oUen and of a dusky-red hjie — the lips and gums become tumid, and bleed upon the slightest touch, vhile a fetid sanious saliva flows constantly from the mouth. Diarrhcea often attends, the discharges being dark-coloured and highly offensive. The disease, in its milder forms, is rather troublesome than dangerous — and it may be removed very speedily by an appropriate treatment; but when it is attended by the symptoms last described, it is very apt to terminate fatally, death being occasionally preceded by a deep comatose condition. There exists some difierence of opinion among medical writers as to how far the morbid exudation characteristic of this affection extends beyond the mouth and favices. It is gene- rally admitted that, in severe cases, it has been found in the oesophagus, as far down as its cardiac orifice : but, while some, including Billard, have asserted that it has been observed throughout the whole tract of the alimentary canal, others, with Veron, maintain that, in no instance has it been met with beyond the cesophagus — the curd-like crusts, occasionally found in the stomach being, as they suppose, conveyed thither from the mouth by degluti- tion. Guyot gives a case, in which the disease was detected, after death, throughout nearly the whole tract of the intestines. In the few opportunities we have had of examining the state of the alimentary canal in infants who have died whilst labouring under this disease, we were unable to trace the exudation beyond the oesophagus — a similar statement is made by Dewees and Eberle. We are to recollect that the disease just described is the result of an erythematic inflam- mation of the mucous membrane of the mouth; aphtha, however, are produced by a follicu- lar inflammation of the same membrane. This aflection is more commonly observed about the period of dentition than at an earlier age — it is particularly liable to occur in children of a lymphatic temperament, or in whom htematosis has been rendered imperfect, by impro- per or innutritions food, a damp and cold, or impure and stagnant atmosphere, exclusion from the light, and neglect of cleanliness. It is, also, of very common occurrence during most of the chronic aflections, especially of the intestinal canal, in persons of all ages. In the commencement of the disease the mucous membrane of the mouth becomes in- creased in redness, and upon the inner surface of the lips and cheeks, on the sides and infe- rior surface of the tongue, and, occasionally, over the greater part of the soft palate, there soon appear a number of distinct white specks, M-hicli, upon examination, are found to be small transparent vesicles, of a grayish or whitish colour, each being surrounded at its base by a raised, hard ring of a red colour more or less decided. These vesicles often occur in groups, or they may cover the whole of the lining membrane of the mouth and fauces; ex- tending, in some cases, into the cesophagus, and throughout the alimentary canal ; while in other cases they penetrate into the pharynx, and, according to some writers, into the larynx and even the trachea. The follicular inflamiuation will often continue for some time, as just described, without making any further progress, and it may often be arrested before ulceration ensues. Usually, however, the vesicles enlarge in size, rupture, and give discharge .0 a whitish matter; a superficial idcer now occurs, witii slightly elevated edges, and sur ' rounded by a circle of inflammation. These ulcers often secrete a white, curdy matter, which adheres, at first, to their surface, but becomes subsequently detached, and is either swallowe.! or ejected with the saliva. It is often succeeded by a new exudation of a simi lar matter, and thus, in protracted cases, the crusts of curdy matter are repeatedly detached and renewed; or only a portion of the crusts are detached, while the general layer of curdy Miatter remains adherent, often for weeks. When the aphthous ulcerations are numerous, axid in close contact, this curd-like exudation may spread from one to the other, and form a CYNANCHE TOxNSILLARIS. 485 'ayor, often of considerable thickness and extent. Occasionally, the exudation from the ulcers is mixed with a small portion of blood ; it then forms dark-coloured-crusts, which have, act unfreqiiently, been mistalcen for gangrenous sloughs. Upon the subsidence of the inflammation the ulcerated follicles readily cicatrize without leaving any permanent scar. Occasionally, particularly in children of debilitated habits, and who are deprived of pro- per hygienic influences, the aphthous ulcerations become gangrenous, their edges shrink, and assume a ragged, flabby appearance ; a brownish slough forms in their centre, which, on separating, leaves a granulated surface of a vermilion hue ; or, in place of a slough, the ulcers become covered w^ith a brown, creamy fluid, that exhales a very decided gangrenous odour. The parts surrounding the ulcers become tumid, soft, and of a violet hue. From the half-open mouth of the child is discharged a ropy, often fetid, saliva. The countenance becomes pale and puffy; the pulse feeble; and the entire surface of the body pallid, and deficient in sensibility: — repeated vomiting, profuse diarrhoea, and a tympanitic condition of the abdomen, generally occur ; and occasionally, hiccup with frequent eructations, and the patient finally dies, according to Billard, without febrile reaction or cerebral excitement. — (See Condie on Diseases of Children, page 126 et seq.) Recently, M. Gruby has attempted to show that, aphthae and muguet are invariably pro- duced by the development of a cryptogamic vegetable. According to tire researclies of this gentleman, the affection consists, at first, of small, coni- cal, whitish elevations, tv/enty-five millimetres in diameter, dispersed over the mucous mem- brane of the mouth. These elevations quickly augment in size, and extend rapidly over the adjacent surface, until, finally, the whole of the mouth, fauces, and sometimes the entire ex- tent of the alimentary canal, appear to be covered with a pseudo-membranous layer, from two to three millimetres thick, and strongly adherent to the subjacent tissue. When a por- tion of this substance was examined under a microscope, M. Gruby found it to be composed entirely of a collection of cryptogamic plants, the roots of which, of a cylindrical form, trans- parent, and about one-four hundred and eightieth part of a millimetre in diameter, are im- planted in the cellules of the epithelium. During their development, projections from these roots penetrate the entire series of cellules of which the epithelium is composed, to arrive at the free surface of the mucous membrane. According to M. Gruby, these cryptogamic plants have considerable analogy with the spo- rotrichiura described by some botanists. Being very fragile, they become detached by the movements of the tongue and lips, and mixing with the food, are carried into the alimentary canal, a considerable portion of the mucous coat of which they subsequently cover. Those children in whom this extension of the disease takes jilace to any great extent, fall into a state of marasmus, and soon die. M. Gruby, having never detected in the white substance of aphthce or muguet any thing else than the cryptogami just described, and the cellules of the epithelium, — there being, in no instance, any product of inflammation present, — considers himself authorized to conclude that aphthae are neither more nor less than a vegetation occurring upon the living mucous membrane. Views precisely similar to those of JNI. Gruby have been advanced by Dr. Berg, of Stockholm. Dr. Oestorlein has also submitted the matter of aphtha3 and muguet to microscopic exami- nation, and has been able to detect in it a vegetation similar to that described by the ob- servers just named. This vegetation he has met with, however, only at the period of the fullest development of the aphthie or muguet, which latter he considers to be the product of an exudation resulting from an inflammatory condition of the mucous nrembrane ; the pro- duction of the confervas being purely accidental. He attempted, repeatedly, to transplant them to other animal tissues or fluids, but without success. — C.] Hard by the salivary glands lie the tonsils : and one of CuUen's species of cynanche is the cynanche tonsillaris ; in more modern language, tonsillitis, or amyg- dalatis : or, in the vernacular, quinsy, common inflammatory sore throat : a disease which, though internal, is yet within the reach of our sight, and easily recognized. The popular term quinsy is in truth, traceable — through the French csqidnancie — to the scientific term cynanche. This common and troublesome disorder occurs with very unequal severity in dif- ferent cases. The differences depend upon the extent of the disease, and upon the number and variety of the parts which it involves : for it is seldom limited entirely to the tonsils, but spreads to the uvula, the velum palati, the salivary glands, the pha- rynx, and even to the root of the tongue, and the neighbouring areolar tissue. When the inflammation is superficial it does not produce any great distress, even though it may be diffused. When it penetrates through and beyond the mucous membrane, it is apt to end in suppuration, and to harass the patient much : the tonsils sweJJ to 2y the previous hemorrhage, that he could not expel the blood so introduced, which actually choked him. A large clot was afterwards found, filling up the wind-pipe. I felt this man's pulse beat firmly and regularly, for a mmule perhaps, after his last effort to breathe. On examining the body it was dis- covered that the abscess had opened internally behind and below the left tonsil. The lingual branch of the carotid artery crossed the site of the abscess; and had been severed and laid open b}'' ulceration. From this vessel the fatal hemorrhage had come. It should be borne in mind also, that cynanche tonsillaris does sometimes, by ex- .t'lision of the inflammation to the neighbouring parts, superinduce that very formi- CYNANCHE TONSILLARIS. 489 (lable species of cynanche, of which I am soon to speak, the cynanche laryngea. All cases in which the breathing is in any degree affected, should excite suspicion, and strict scrutiny ; although the dyspnoea may be produced by the mere sweUing of the tonsils. You will understand, then, that cynanche tonsillaris may, under unusual and untoward circumstances, prove a fatal disease; but that it is so very rarely indeed. In almost all cases we may say that the life of the patient is not in danger. In the uncomplicated and milder form of the disease, when the inflammation is superficial and the fever slight, no great activity of treatment is requisite. The patient should be kept within doors, and even in bed: for a troublesome tendency to a recurrence of the disorder may be fostered by neglect or imprudence. Cooling sahne purgatives will be proper, and the antiphlogistic regimen. A strip of flannel may be put round the neck, and some stimulating embrocation applied to the exte- rior of the throat, beneath the ramus of the jaw : the compound camphor liniment is well adapted to this purpose. Some such plan as this will generally suffice, not indeed to stop the inflammation of a sudden, nor to put an end at once to the fever, but to cause the complaint to run its course evenly, arid to go on to resolution in a few days. Commonly it is not completely over until both the tonsils have been attacked in succession. When you catch the disorder in its very outset, I believe you may sometimes succeed in cutting it short by an emetic: a scruple of ipecacuanha, for example, with a grain of tartarized antimony. In all cases it is right to administer a brisk purgative. A great variety of astringent, acid, and other gargles, have been employed in this disease ; and their good elfects have, I apprehend, been much over-rated. Many cases would do quite as well, or belter, without them ; for in the early stages strong astringents, and the straining and movements of the throat that accompany their use, may even be hurtful, and increase the pain and the inflammation. The only gargle which I should consider admissible in the commencement of the malady is a gargle of warm milk and water. I have known of one instance in which quinsy suddenly attacked a gentleman who was extremely anxious to use his throat, in public speak- ing, the next day. He occupied himself perpetually, for some hours, in this sort of fomentation of the tonsils with hot water ; and with such good effect that on the day following he was able to accomplish his object. Still there are cases in which, at certain stages of the disease, detergent gargles are serviceable, by assisting the excre- tion of the mucus that collects in the fauces, and by correcting fetor. A weak solu- tion of chlorine in water answers well. In more chronic sore-throats, stimulatinor gargles may often be employed with advantage. When the inflammation is violent a slightly stimulant linctus is preferable; it cuts the phlegm as they say, i. e., it promotes its detachment and removal. Of this kind, currant-jelly is one of the best- But far better than any thing else, as a local application to the inflamed fauces, is the steam of hot water; whether we are hoping for resolution of the inflammation or whether we desire to promote and hasten the process of suppuration already begun The inhaler introduced by myself into the Mid- dlesex Hospital, and elsewhere, though somewhat clumsy in appearance, is the most convenient and effectual that I am acquainted with. I show it to you. It was invented in Edinburgh by a friend of mine long since dead, Mr. Hercy. It will stand upon a table, or lie upon a pillow; and a large volume of steam is carried inwards against the fauces by the mere natural breathings of the pa- tient. Most of the inhaling machines that I have 1 seen require a sucking effort, like that made in smoking a pipe : an effort that is apt to be irksome and fatiguing, especially in pulmonary diseases ; for some of which this method of applying vapour directly to the suffering part is a» useful as it is for sore-throats. 490 CYNANCHE TONSILLARIS. Blistering the outsidt of the throat is a fa vol rite remedy with many. When early applied, a blister often does much good, and probably prevents suppuration in some cases. But I have found blisters of uncertain efficacy ; they leave a mark which lasts for some time, and which patients of the other sex are apt to complain of. For these reasons I prefer mere rubefacients ; the liniment I mentioned before, or the compound soap liniment, or a mustard poultice folded between two layers of .hin hnen. In more severe cases leeches applied to the upper part of the throat, just below the angles of the jaw, have been found to give sensible relief: and in the VA'orst degrees of the disorder, when there is much outward swelhng, and the jaws and tongue are fixed, leeches are absolutely requisite. It may be proper to take blood from the arm also. The necessity for active depletion must be measured by the severity of the local symptoms, the intensity of the fever, and the general strength and condition of the patient : and of these things a little experience will teach you to judge. It is not to be expected that either leeches or blisters will be of much use afier the process of suppuration has commenced ; nay they may sometimes be injurious by retarding it. it is frequently a difficult matter to determine whether pus has yet formed or not. I have already admonished you to make a careful examination of the throat, and to watch your patient narrowly, whenever he experiences any difficulty of breathing. Dyspnoea may be produced by the mere swelling of the inflamed part ; and when it concurs with much enlargement of the tonsils you had better pierce them with the lancet. If they contain matter, it will be evacuated ; and if not, the bleeding pro- duced by the puncture will generally reduce the swelling somewhat, and relieve the patient. There is an instrument made on purpose for this small operation, consisting of a lancet enclosed in a flat silver sheath, from the end of which it is made to pro- trude, to a certain extent only, by pressing upon a spring. The instrument should be directed towards the centre of the fauces, and not outwards, in order to avoid wounding important vessels or nerves. Dr. Cullen indeed says, "this does not require much caution :" but notwithstanding this high authority, I must warn you that puncturing or scarifying the tonsils is an operation not to be carelessly, or rashly, or wantonly performed. Portal mentions a case in which a skilful surgeon, in scari- fying the tonsils of his patient, wounded as he supposes some ramification of the internal carotid, and the patient was presently dead. That artery lies, as you know, very near the tonsil ; and only a few years ago, in Ireland, it was struck by a sur- jreon while scarifying a gentleman's tonsil; and the gentleman died in three minutes. This I was told by the late Dr. Barclay. The case I related just now of faial hemor- rhage from the lingual artery points to the same danger : and since that case occurred two others involving similar hazard have fallen under my own notice, and impressed me with a strong feeling of the necessity of caution. A man was brought into the hospital with profuse hemorrhage from the right tonsil or its immediate neighbour- hood, the consequence of syphilitic ulceration of those parts. He had lost ihree or four quarts of blood, and was nearly dead. His life was saved by Mr. Mayo, who tied the common carotid on that side. Last February (1838) a boy from Harrow School was placed under my care, in whom cynanche tonsillaris came on during convalescence from scarlet fever. So much swelling was there of both tonsils that they met, and pushed the uvula out- wards before them, and the breathing was much impeded. A surgeon who was in attendance with me punctured the tonsils. The next day a good deal of hemor- rhage took place ; and this recurred, several times, to a considerable and even an alarming amount. When the clots that formed were wiped away with a sponge, he blood could be seen welling out in a little stream, wiih a pulsating motion, from a small incision in the left tonsil. The hemorrhage was ultimately, after much trouble and anxiety, arrested, by applying a pencil of lunar caustic freely, within the bleed- ing orifice. Lint, wetted with the muriated tincture of iron, or with a saturated Kolution 01 alum, is a fit application in similar accidenis. ACUTE LARYNGITIS. 491 Mr. Lawrence, who saw this case, told me that he once knew a patient die of Jiemorrhage from the tonsillar artery. 1 ought, perhaps, here to add, that very recently, Mr. Joseph Bell, of Barrhead, has strongly recommended the internal administration of powdered guaiacum, in large doses, as being almost specific in the cure of cynanche tonsillaris. He gives as much as half a drachm, suspended by means of mucilage, in a draught, every six lOurs. Mr. Bell has no doubt that this remedy, if timely administered, will cut the disease short in ninety-nine cases out of a hundred. It has been found successful in othpr hands also. I have never had an opportunity of trying it. The chronic enlargement of the tonsils, to which I have s'l-eady adverted, is some- times productive of great inconvenience and distress, and ev^n of danger. Its occa- sional consequences are — an habitual trouble in swallowing; confused and inarticu- late speech ; deafness in various degrees, from occlusion of the eustachian tubes; more or less impediment of breathing; and even spasm of the glottis, and impending suffocation. The enlargement may, in such cases, be somewhat reduced, I believe, by repeatedly passing a stick of lunar caustic over the surface of the tonsils ; but a much readier and better plan is to amputate them, in part at least. This may be done by a ligature ; or still better by scissors, or by a sort of small guillotine invented for that purpose. It is not a very painful operation. Mr. Arnott removed one lately from one of my hospital patients; and a very few days ago (December, 1838) Mr. Mayo brought two, in a piece of paper, to the hospital. He had just before cut them ofT for a patient whose respiration they had much embarrassed. [Recently the application to the enlarged tonsils of the iodide of zinc, is said to have the effect of causing their rapid absorption. The article is prepared by placing a clean plate of zinc over a jar or vial, and sprinkling iodine over it. In a short time the iodine is deposited in the vessel, in the form of a semi-fluid deliquescent substance. This is to be applied pure, to the surface of the enlarged tonsil, by means of a earners hair pencil, or a piece of sponge, secured to a suitable handle. It is to be held on for a short time, and re- peated every two or three days, until the object is accomplished. The application is fol- lowed by a pimgent smarting, which lasts for twenty or thirty minutes, but by no other inconvenience. Dr. Goddard, of this city, we are informed by Dr. Parrish, in his annual Report on Surgery, read to the College of Physicians, has used the remedy extensively, and speaks very favourably of its effects. He has found it to possess the property of inducing a rapid absorption of the enlarged tonsil, by a sort of shrivelling process, without the forma- tion of a slough. It does not, like the chloride of zinc, spread to the surrounding healthy structure, and hence, may be used without the fear of injury from being swallowed. (Sit»»- mary of the Trans, of the College of Phijs., of Philadelphia, No. vii, page 191.) — C] LECTURE XLV ^cute Laryngitis. Symptoms. Treatment ; Blood-letting. Tracheotomy, Mer-' cury, Antimony. Anatomical Characters of the Disease. ^Causes. Secondary Laryngitis. Oedema of the Glottis. Chronic affections of the lAirynx. The disease of which I have next to speak is of far more serious character than those which were considered in the last lecture. Cynanche laryngea, or acute laryngitis, has proved rapidly fatal in a large proportion of the instances in which it has been known to occur. Yet, when the patient is seen tolerably early, and the nature of the malady is clearly perceived, and the source of peril thoroughly under- stood, I believe that our art is sufficient, in most cases, to rescue the sufTerer from the fate that hangs over him. It is of the greatest importance, therefore, that you should be able to recognize laryngitis when you meet with it, and that you should comprehend the principles according to which it requires to be treated. What is laryngitis ? It consists, as that term implies, in inflammation oi the pans composing the larynx : and especially of the mucous membrane that covers tho 492 ACUTE LARYNGITIS. laryngeal cartilages, including the epiglottis. The inflammation may be, and some- times is, exactly limited to the larynx ; but frequently it extends also to the posterior fauces, the velum palati, and the tonsils. The symptoms of acute inflammation of the larynx are these. The patient com- plains of sore-throat. If you look into his throat you Avill commonly perceive some redness of the velum and uvula, and of the fauces generally. But there is a degree of restlessness and anxiety about tlie patient more than proportionate to the apparent inflammation. Among the earliest of the symptoms that bespeak danger, and ought to excite alarm, is difficulty of des:httition, for Avhich no adequate cause is visible in the fauces; and to this is presently added difficulty of breathing, for which no ade- quate cause can be discovered in the thorax. The mode and character of the respi- ration are peculiar; it is attended with a throttling noise; the act of inspiring is protracted and wheezing, as though the air was drawn in through a dry narrow reed. If you ask the patient what is the seat of his distress, ivhere the disease is situated, he points with his finger to the pomum Adami. If he coughs, he coughs whh a peculiarly harsh, stridulous, husky, abortive sound. He either speaks quite hoarsely, or (what is more common) all power of audible voice in the larynx is lost, and he speaks by means of his lips and tongue only, in a whisper. There is tenderness of the larj'ngeal cartilages ; they are painful when pressed externally. The face is flushed ; the skin hot and dry ; the pulse hard. As the disorder advances, the pa- tient's general distress increases ; but some of the symptoms alter; his countenance becomes pale or livid, anxious and ghastly ; his eyes protrude ; he is miserably un- quiet, impatient for some relief, declares or makes signs that he wants air, and begs that the windows may be opened : and if he does not obtain timely relief, he pe- rishes — he dies strangled. The pathology of this terrible disease is extremely simple. The membrane covering the interior surface of the instrument of the voice suffers inflammation. One effect of inflammation in mucous membranes is a thickening of those membranes; they become turgid and swollen. Another frequent effect is the effusion of serous fluid in the subjacent areolar tissue. B}' such tumid thickening of its lining mem- brane, the chink called the rima glottidis is narrowed : it is still further diminished in breadth whenever the membrane is lifted and protruded by infiltration of the tissue beneath it: it is so nearly closed up, that air cannot pass inwards in sufficient quantity to sustain the vital functions: a small portion only of the blood returned to the lungs from the right side of the heart undergoes the requisite change from venous to arterial. The miserable patient grows drowsy and delirious, and dies b}^ a slow process of strangulation. If the rima glottidis becomes quite closed up, his suffer- ings and his life are quickly at an end. This disease affords a good instance of a truth which was announced in a former part of this course of lectures ; viz., that the danger of a morbid change may de- pend entirely upon its situation. It is so, eminently, with laryngitis. The inflam- mation is sometimes limited to a spot of membrane not bigger than a square inch. If a square inch and no more of the same membrane, a little lower down, in the trachea, were inflamed in the same manner and degree, the complaint would be quite unimportant. Cynanche laryngea derives all its peril from the circumstance that the inflammation tends to shut up what may well be called the jamtu vitsc. The part afll^cted subserves two purposes : it is the organ of speech ; and it forms a portion of the channel through which air is conveyed from without into the lungs. Both of these purposes are impeded in laryngitis. Now the animal function of speech may be entirely and permanently suspended without any danger to life. The function of ••espiration, which, though under the influence of the will, is an organic function, will not bear to be suspemled, even for a few minutes ; and life cannot be long sus- tained when it is inuch impeded. The difficulty of swallowing is a remarkable symptom, and almost always present. Yet it is not absolutely universal ; for Mr. Lawrence describes a case in Avhich it did not occur. It appears to depend, in some measure, upon the tumid and tender con- dition of the whole membrane which is common to the larynx and pharynx, and ■which is pressed upon as the larjmx rises in the act of deglutition : but this symptom ACUTE LARYNGITIS. 493 depends also, and in a greater measure, upon the state of the epiglottis, which is often enlarged, and fixed by the swelling in an erect position, and unable to execute its natural valvular office ; so that when the patient makes efforts to swallow, a portion of the food or drink gets into the larynx, and a paroxysm of choking dyspnoea ensues. By pressing down the back part of the patient's tongue, and getting him at the same moment to make a coughing effort, you may sometimes obtain a sight of the tumid, red, and upright valve. The dyspnoea is constant : yet there are pauses of comparative ease and quiet ; and thert are, commonly, periods of severe aggravation and urgent distress. It is probable taat the permanent narrowing of the chink by the inflammation and its con- sequences is from time to time increased by spasmodic contraction of the muscles that close the glottis. This is the first disease that has come before us, in which the respiration has been primarihj impeded. If you call to mind what was stated in one of the early lectures respecting death by apncea, you will be at no loss to understand the manner in which life is destroyed in laryngitis. This formidable malady has always existed ; for you may trace examples of it, under various names, even in the writings of the ancients. But it is only in recent times that it has been singled out from the rest of the angiuce, and made a separate object of study. It has numbered some distinguished medical men among its victims : Dr. David Pitcairn, Sir John Macnamara Hayes, Sir George Tuthill. The cele- orated General Washington died of it. When it has caused death it has generally run a rapid course, and proved fatal before the fifth day. It has carried the patient ofT in less than twelve hours. It is of the utmost consequence to make an accurate diagnosis. Laryngitis is easily distinguished from cynanche tonsillaris by the extreme and peculiar dyspnoea which attends it. There may be difficulty of breathing in the latter disease, from enormous sweUing of the tonsils ; but then such swelling will mostly be visible. In laryngitis the marks of inflammation to be seen on inspection of the fauces are gene- rally slight and trifling, and quite inadequate to explain the difficulty of swallowing. Do not, however, forget that laryngitis may supervene upon cynanche tonsillaris. Again, cynanche laryngea is readily discriminated from cynanche pharyngea ; in which complaint there is great pain and difficulty in deglutition ; but the breathing is quite free. In cynanche tracheahs, or croup, which I shall next describe, the breathing is afTected, and the swallowing is not. What is to be done for a patient labouring under acute laryngitis ? How and when tire we to employ the great remedy for acute inflammation— blood-letting ? or are we to employ it at all ? These are points concerning which it is quite necessary that your minds should be prepared and prompt to decide. If you look merely to the results in the recorded cases of this fearful complaint, you will scarcely find an answer to the question. In some of them copious bleeding appeared to save the patients ; in others, it was of no service, but rather seemed to accelerate their death. Sir John Macnamara Hayes suffered two attacks of cynanche laryngea. In the first he was freely bled. Dr. Roberts, of Bishop Stortford, informs us that the first bleed ing was attended with considerable relief; the second also with manifest advantage, and by the third, his safety appeared to be ensured. Fifteen years afterwards he died of the same disorder, for which he was again bled and leeched, under the care of the late Dr. Baillie. Washington was largely bled, and died. Again, a Dr. Francis, of New York, recovered from acute laryngitis after copious venaesection. It is evidently needful to consider and determine the circumstances under which we are to use, or to withhold, the lancet. Bleeding, to be serviceable, or safe, must be performed early. There is, perhaps, no disease in wl>ich the xatpoj o|v;, the fleeting opportunity, is more conspicuous than m this. When I say that you must bleed early, if at all, I do not mean that you are to reckon so many days or hours from the commencement of the disorder; but you must ascertain what progress it has made ; for it travels sometimes at a railroad- pace. You must look to your patient's actual condition ; and I apprehend that your practice, in respect to blood-letting, may be safely guided by the following rules. If 2r 494 ACUTE LARY.NGITIS. there bo high inflammatory fever present, and the skin is hot, the pulse firm and full, and the cheeks are red, and the lips florid, you may bleed your patient with decision and advantage. But if his powers are beginning to sink under the poison- ous influence of imperfectly aerated blood, if his skin be cold, or even cool, his face pale or leaden, his lips blue, his pulse small and feeble, his mind wavering — you will do no good by blood-letting: nay, you will increase the debility which already-' exists, and hasten the fatal catastrophe. With regard to local blood-letting, and to counter-irritation, there is one remark made by Dr. Farre of much practical importance. It is a common practice, in affec- tions of the throat, to appl}^ leeches over or near the laryngeal cartilages, and after- wards to place a blister there. Now serous infiltration of the neighbouring parts often follows leech-bites ; and the effect of a bhster in producing serous effusion often extends beyond the skin : and the cartilages of the throat he very near the surface ; and it is possible that cedema of the glottis might be produced, or augmented, in consequence of these topical remedies. It will be better, therefore, when we wish to take blood locally, to take it by cupping from the back part of the neck : and when we desire to produce counter-irritation, it will be prudent to lay a blister on the upper part of the sternum, rather than to the front of the throat. In the advanced stage of the disease, medicine, I fear, can effect but little. But surgery may be more successful. The danger arises from the mechanical obstacle to the entrance and exit of air into and from the lungs ; and this state of peril admits of a mechanical remedy. If an artificial opening be made between the obstructed part and the lungs, the air is again freely inhaled and freely expelled; the blood undergoes the vital change from pur- ple to scarlet ; and the patient is placed in a condition of safety. He continues to respire through the hole thus drilled in the trachea, until the inflammation of the larynx has subsided ; the thickening of the membrane disappeared ; the submucous infiltration been re-absorbed ; and the vocal instrument restored to its natural integ- rity ; and then the aperture in the wind-pipe may be suffered to heal, and the patient will again draw his breath through its natural channels. This is one of the triumphs of the healing art. It requires a knowledge of the general pathology of the disease, i. e., an acquaintance with the facts that acute in- flammation may aff'ect the larj-nx almost exclusively, and that its tendency is to nar- row the fissure of the glottis, and destroy life by suffocation. It requires a knowledge of the symptoms of such inflammation : and it requires an accurate knowledge of all the essential circumstances of the particular case. For it is not every case in which the transit of air through the slit in the larynx is hindered, that is a fit case for the operation of tracheotomy. Some years ago there was brought to me by a surgeon a man breathing with considerable labour and constraint, the air passing through the larynx with an audible hissing noise. The surgeon wished to know my opinion of the propriety of opening the patient's wind-pipe. He had come to the conclusion that there was ulceration of the membrane lining the larynx, with thicken- ing; that the cause of the sibilous respiration was partly mechanical, partly spasmo- dic ; the little muscles that close the glottis acting with injurious energy in conse- quence of the neighbouring irritation : and he thought that this mischief in the larynx would have a better chance of being repaired, if the functions of the organ could be for a lime suspended. He was aware, however, of the necessity of ascer- taining what was the condition of the lungs ; and he had not studied auscultation long enough to trust his own ear in that matter. The patient was pale and thin, and emaciated ; and three minutes sufficed to convince me that his lungs were exten- sively disorganized. His respiration was not so difficult as to threaten suffocation ; he was not dying of the laryngeal obstruction ; and I recommended that he should not be subjected to an operation which might curtail his existence, but could not effect a ■;ure. The man died soon after ; and we examined his body together. There was, as my friend had supposed, ulceration of the membrane near the chordce vocales, and the lungs were full of suppurating or softening tubercles. I mention this case to show you that it is necessary to ascertain the condition of the thorax generally, before we perform or sanction such an operation as tracheotomy. Not that there is ACUTE LARYNGITIS. 495 anything very formidable, or painful, or dangerous, in the operation itself. But if we cut a hole in- a patient's throat, who is sure to die soon after of some other incurable complaint, we shall incur the risk of being charged with having killed him. Do not misunderstand me, however. If a patient's life be threatened by acute laryngitis, or by laryngeal oedema, and we are sure of that, and if at the same time we are sure that he carries another mortal disease about him, we are not for that reason to let him die, if we can help it, of the laryngitis ; any more than it would be 'lawful for us to administer a drachm of prussic acid to a man condemned to bo hanged the next morning. But we must state the whole of the case plainly to the patient's friends, and propose the operation as a mode, not of effecting an absolute cure, but of staving off the immediate danger. And here let me repair an omission of which I was guilty when speaking just now of the diagnosis. My object was to guard you against mistaking laryngitis for some other malady : but I must also warn you against the converse error, that of mistaking some other malady for acute laryngitis. I can assure you that such a mistake has been made ; and tracheotomy has been performed, too, when there was no disease in the larynx , and the practitioners by whose authority it ivas performed have been ungenerously reproached for their error, although no harm beyond the slight pain and inconvenience of the operation resulted from it. The cases in which this blunder has been committed have nearly all, I believe, been cases of aneurism of the thoracic aorta, which by its pressure on the first divisions of the air-passages, or on the nerves thereabouts distributed, had caused that kind of laboured andstridu- lous breathing which is characteristic of laryngitis. I may venture to say that no person who has had opportunities of educating his ear for the purposes of ausculta- tion, and has made a proper use of those opportunities, could ever overlook such a comphcation as this. I have myself seen a woman (I mentioned her case before) whose trachea was laid open by a surgeon while she was suffering under mere hys- teria ; so closely did that disease mimic laryngitis. When you have good evidence that a mechanical obstruction to the passage of the air exists in the larynx, and that the tubes beyond the larynx are pervious and free ; there are two things which I would urge upon you. First, I would most earnestly advise you not to wait too long before you propose or perform tracheotomy ; and secondly, never to omit performing it merely because it may appear to be then too late. If, in the acute and limited disease, an artificial opening be made while the patient's strength is yet entire, and before his whole system is poisoned with venous blood, or his lungs are overwhelmed with sanguine congestion and serous effusion, it will almost infalhbly save his hfe. But if the sinking of the vital power has got beyond a certain point, tracheotomy will not, in that case, rescue him. It is bad and foolish practice to wait, and try other methods, and postpone the operation as a last resource, when the circulation is evidently loaded with unarteriaHzed blood. In my own case I should choose to be operated on early ; the moment that 1 found early blood-letting was not telling upon the local distress, and that any shade of duskiness became perceptible in the skin ; just as I should choose to be operated on at once for strangulated hernia, after one fair attempt had been made by a skilful hand to return the bowel ; without waiting till inflammation set in, or had been caused by the taxis. On the other hand, if you do not see your patient until his powers are nearly exhausted, do not abstain from the operation even though you may feel con- vinced that it will be unsuccessful ; for if it does not save life, it will disarm death of its agony. A patient will lie sometimes for hours, painfully labouring for breath in deep and strong catches, at considerable intervals from each other : in fact, he is just in the condition of a man with a cord round his neck, not pulled quite tight enough to suffocate him at once. Besides, it is not always easy to say whether the period of possible recovery is yet gone by. I had a female patient in the hospital who had suffered one or two attacks of frightful dyspnoea, in which the main dilR- cuhy was referred to the larynx; but she had rallied from them before any steps could be taken for performing tracheotomy. On the next occasion, however, the seizure was so sudden and rapid, that although Mr. Arnott was luckily in the hospital at the time, the woman was, to all appearance, dead, before he could "re found and 496 ACUTE LARYNGITIS brought to her bedside. Respiration had entirely ceased. This quietude of the larynx rendered the operation more easy. Mr. Arnott speedily made an opening into the trachea ; some air was blown in through the aperture, and then pressed out again ; and presently the natural respiration was renewed. The woman recovered: the orifice healed up, and she left the hospital. Three or four months afterwards word was brought that she had died at her own home after a short attack, and when there was no one at hand to open her windpipe. We got permission to examine the body, and found a large ulcer in the trachea, near the larynx ; which ulcer by its irritation had occasioned, as we presumed, the spasmodic closure of the glottis. A preparation exhibiting the diseased parts is on the table before you. You see that there was an enlargement of the thyreoid gland. This had probably nothing to do with the symptoms. There was also a large ulcer in the left bronchus. Mr. Goodeve, surgeon to the Clifton Dispensary, operated on a patient in whom "no pulse could be found at the wrist; his face was suffused with blood, and his lips hvid ; and it was hard to say whether he breathed or not :" yet he recovered. It so happens that there is at present (December 1838) under Dr. Wilson's care, in the hospital, a woman named Slack, who was rescued when almost in articulo mortis, by the same expedient. She had chronic disease of the larynx ; but a sud- den aggravation of the symptoms occurred ; she became stupid and comatose, her countenance was cadaverous, her skin covered with a cold clammy sweat, and her breathing, which had been stridulous and laryngeal, had almost, if not quite stopped. She was making short, gasping efforts to respire, not oftener than twice in a minute. Her pulse was intermittent, and extremely feeble. In this state the house-surgeon (Dr. William Merriman) made a small incision in the skin over the cricoid cartilage, and then thrust a large trocar into the windpipe. Air rushed through the opening, the respiration returned, the pulse revived, and the stupor passed away. This hap- pened on the 1 0th of October. She is still in the ward ; the aperture has closed up ; and though she is not well, she is living;. What is the reason, you may ask, of these different and inconsistent results ? How is it that tracheotomy shall reanimate one patient, whose last breath, but for its help was already drawn, who was already motionless in apparent death; and yet shalJ fail to save another patient, who is still alive, and sensible of his danger, and strug- gling with his disease ? The difference depends, I make no doubt, upon the timt? that elapses between the commencement of extreme dyspnosa, and the performance of the operation ; upon the slow or the speedy completion of the stranghng process And this, again, obviously depends upon the manner and degree in which the pas- sage is narrowed. When the obstruction, though considerable, is incomplete, and does not rapidly augment, the respiration continues to be performed, however, im- perfectly. Meanwhile the brain gets oppressed, the circulation tends to stagnate, and, above all, the lungs become gorged with black blood, and clogged up by effu- sion into their cells and substance. Secondary causes of apnosa are thus established, which do not cease when the primary cause is at length removed, by the unbarring of the main channel for the admission of air. Whereas when the access of the atmosphere is suddenly or soon shut out, the lungs are not thus mortally injured, but remain capable of resuming their functions when they are again supplied with air. Tracheotomy, then, will be the most likely to succeed, while the patient is still lively and strong ; and after that the chance of success will be worse in those cases in which the apnoea has been slow in its progress, than in those in which it has been rapid. I repeat that, in threatening circumstances, the operation should be done earhj ; but that it should not be withheld, through despair, at any period of the disease. The effect produced upon the condition of the patient by the timely formation of in artificial gbttis is very striking. The moment that the scalpel penetrates the rings of the trachea, air begins to hiss through the incision ; and when a fair opening is established, and a full inspiration is drawn in through the wound, several forcible expirations generally succeed, whereby a considerable quantity of niwcus is expelled, which could not pass the contracted apertu'-e of the natural glatis. Then the ACUTE LARYNGITIS. 497 bi*eathing soon becomes easy, the anxiety and distress are followed by a perfect calm, and usually the exhausted sufferer sinks into a tranquil slumber. This sleep is apt to be from time to time interrupted by the clooging up of the orifice with frothy mucus. It is requisite that some intelligent person should remain by the patient, to assist him in these emergencies, or he may still be throttled, notwithstanding the apparent prosperity of the operation. When a sufficient hole has been made in the instrument of the voice, belovv the glottis, the voice of course becomes extinct, or nearly so ; and the patient is as unable to utter a cough as he is to use vocal language. Now this it is of some importance to notice, for he often wants to cough, in order to clear the air-passages of mucus, or of blood, by which they may be embarrassed ; and he may be helped to do so, or taught to help himself. First he should draw in a full breath, and then stop the ori- Itce for a moment with his finger, while he makes the expiratory effort. And as the parts within the larynx recover, the patient, by a similar manoeuvre, may enable himself to speak aloud. As actual examples are more interesting and often more instructive than an ab- stract of results, I will tell you in a summary manner the history of a case of laryn- gitis, which occurred in one of my hospital patients, in the latter part of the year 18;i2. He was an old man, about sixty. His name was Kent. He was brought to the hospital bloated with anasarca, which was most conspicuous in his legs and thighs. His breathing was laborious and difficult, and attended with a wheezing noise, audible at some distance. He could not lie down : he had a hard, but not full pulse. The dropsical swelling had come on suddenly five or six days before ; and in the outset his face (he said) was so pufl^ed up that he could scarcely see. He had been bled to the amount of a pint and a half, according to his own account, on the previous evening. I had a vein opened immediately, and twenty-four ounces of blood were drawn ; and eight ounces more were taken from the chest by cupping. He was thoroughly purged with calomel and senna. The bleeding gave him very little relief, so far as the respiration was concerned ; but the next morning the ana- sarca had totally disappeared. I found him sitting up in bed, breathing with much effort, and with a loud stridulous noise which accompanied both inspiration and ex- piration. He referred all this uneasiness to two points; one of these was the larynx, the other the ensiform cartilage. He swalloAved with great pain and diffi- culty ; and every attempt to do so excited a fit of choking cough. There was no morbid appearance visible in the fauces : every part of his chest sounded well on percussion, and the murmur of healthy respiration could everywhere be heard in the lungs, almost drowned, however, in the louder laryngeal noise. As his strength was entire, I had him again cupped, to twelve ounces, at the back of the neck ; and pre- scribed three grains of calomel every three hours. He also inhaled the steam of hot water. Upon visiting him again the same evening, I found the dyspnG3a increased. Each act of respiration was attended with a loud croupy noise. His countenance was be- ginning to be anxious and ghastly. He was restless ; and his pulse was less firm. Being now firmly convinced that the operation of tracheotomy was the only thing that could save him, and that it could not be safely delayed, I sent to request that Sir Charles Bell would come and perform it. By the time he arrived the restlessness had increased. The patient was shifting perpetually from one side of the bed to the other, as if seeking some new point of support : his face had become pale ; and his lips were turning livid. He spoke with sudden, and as it were with convulsive eflbrts; stating earnestly how thankful he should be to have the obstacle to his breathing removed ; and pointing to the larynx as the seat of his distress. The ordinary operation, under such circumstances, is by no means an easy one to perform. Its difficulties were well exemplified in this patient. In the first place he was sitting up ; he could not bear to be placed in the recumbent position. Then the dyspnoea caused him instinctively to elevate his shoulders, and sternum, and clavi- cles, to the utmost, so that the trachea was sunk deeply into the thorax ; and the larynx was in constant and rapid movement up and down with a plunging motion, like that of the piston of a steam engine. Sir Charles, after some trouble, succeeded 33 2r2 498 ACUTE LARYNGITIS. in cutting out a piece of the cartilage ; for a mere slit did not suffice : it closed tightly during every inspiration, although it was open enough during expiration. At length, when ihe air was freely admitted, the breathing became gradually easy. I shall never forget the whole spectacle : there sat the poor man gasping and fighting for breath ; his face covered with sweat, and wearing the most anxious expression. By and by what I have called an artificial glottis is opened for him ; and presently after- wards, though half a dozen candles (as Sir Charles has himself painted the scene) are held close to his face, to throw light upon ihe wound, and though the surgeons, their hands smeared with blood, are still busy about his throat, making arrangements to ensure the patency of the orifice, the patient falls fast asleep. It was necessary to place an assistant behind him to prevent his head from nodding forwards, and deranging the apparatus in the wound. Nothing can express more strongly than this fact the great distress and fatigue which had previously existed, and the perfect relief afforded by the operation. This man ultimately got quite well; and he has since shown himself occasionally at the hospital, in excellent health. There were two or three points about the case which I am unwilling to pass over without notice. It was evident that after the opening was made in his windpipe, he still breathed in part through the rima glot- tidis also; for the stridulous sound did not wholly cease. The aperture was formed as low as the circumstances of the case appeared to permit : the tube was perforated in the membranous space between the thyreoid and cricoid cartilages. Strictly speaking, laryngotomy was the operation performed. I do not enter into the con- sideration of the best place for making the opening; that point you will be taught by the professor of surgery : but it was observed in the case in question, that the slightest touch of the irritable mucous membrane, with a hook or a probe — especially if the touching instrument was turned vpicords towards the glottis — produced a fit of coughing, and a paroxysm of still more laborious breathing. For some days after the operation, it was noticed that a part of whatever liquid he swallowed appeared immediately at ihe wound. Now this proved as plainly as if we could have seen the parts, that the epiglottis was thickened, and erected, and incapable of performing its protective function to the larynx : and it accounted for the paroxysm of choking cough produced by each act of deglutition. At first the lining membrane of the, larynx and trachea was so irritable, that the patient could not bear to have a metal- lic tube inserted ; and an ingenious contrivance was adopted for keeping the orifice from being covered over by the lips of the wound. They were held apart by two bent wires, which were tied together at the back of his neck. After twenty-four hours had elapsed, the irritability of the mucous membrane had so far abated that he was able to breathe through a canula. There cannot be a doubt that this man was snatched from the very jaws of death by the intervention of the surgeon. A function indispensable to life was nearly sus- pended ; and a substitute for the faulty organ was provided by art, until the inter- rupting cause was removed. Scarcely a year passes over our heads without the occurrence of one or two such events in the hospital. When lecturing upon this subject last season, I was able to show you a female patient whose life had been saved in a similar way. And there is now also (December 11, 1839), in Pepys' ward, a rescued man, with the tube still in his windpipe. The operation was done on the spur of necessity by Mr. Tomes, the present house-surgeon, with a trocar. The patient, who was previously in a state of extreme distress, said, in a faint whis- per, as soon as the opening was effected, "It's all right now." He had been exposed to rain and cold about a week before ; and had suffered pain and tenderness of the larynx. Prior to his admission he had been bled, and sahvatcd, and had a blister on the throat ivhich embarrasacd the operation. Within the last eight years the operation of tracheotomy has been performed in me Middlesex Hospital fourteen times. Seven of the patients recovered ; seven died. In two of the seven fatal cases, the condition of the patients was. hopeless at the time of the operation. In four at least of the five others much relief from suffer- ing was afforded by it, and life apparently prolonged. One of the patients was a young child : the opening was made by a trocar ; much blood got into the air-pas- ACUTE LARYNGITIS. 49& sages, and the cLild, which seemed to be sinking previously, died within the hour. Life might, I think, have been preserved in this case, by a timely operation, pro- perly done. For a trachea so small, the scalpel is preferable to the trocar. But in the adult subject I haA^e seen the larynx penetrated so neatly, easily, and speedily, both by Mr. Arnott and by Mr. Shaw, with a small curved trocar, tliat I am per- suaded of the general superiority of that method over the common operation with the knife or scissors. If this be granted, the fit place for the opening must be the membranous space between the thyreoid and the cricoid cartilages. The superja- cent skin is first nicked with a scalpel : the larynx is then fixed for a moment by the operator's left hand, while with his right he thrusts the instrument steadily inwards and downwards. I have said nothing hitherto about the use of mercury in this acute disorder, be- cause I hold it to be of very secondary importance, and because I have been anxious not to divert your attention from the two great practical points, bleeding and trache- otomy. Mercury may very fitly be given in those cases and circumstances m which blood-letting appears proper ; but we cannot depend upon it ; we cannot reckon upon its influencing the system in time; nor upon any marked improvement of the symp- toms when it does produce its specific effects. After the operation it is, for the most part, unnecessary. Nor do I recommend the employment of tartar-emetic, powerful as that drug is known to be in subduing inflammation of the mucous tissues. In the swollen and unpliant state of the epiglottis it would not be prudent to excite, or to hazard, vomit- ing. The contents of the stomach passing upwards would be apt to enter the un- protected larynx, and to cause hurtful, distressing, and even perilous attacks of suffo- cative cough. In the examination of fatal cases, sometimes the thickened membrane forming the edges of the rima glottidis is found covered with viscid mucus, which had formed an additional impediment to the passage of air towards and from the lungs : some- times pus is discovered, lying in the sacculi laryngis, or scattered among the carti- lages and surrounding muscles : and sometimes the chief morbid condition is the infiltration of the submucous areolar tissue. The effect in all cases is the sam.e, that of closing up, wholly or partially, the narrow fissure between the arytenoid carti- lages. The state of the epiglottis I have several times described. This very serious disease is a disease of adult age ; it is not often known to occur in children. They again are almost as exclusively liable to croup: and cynanche laryngea has been called the croup of adults. But as the part occupied by croup, and the event of the inflammation, are both difl^erent from those of laryngitis, this name, croup of adults, is objectionable. I may remark, however, that sometimes in rue croup, the inflammation, besides specially affecting the membrane of the trachea, extends to that of the larynx also. [Children are very liable to a mild form of laryngitis accompanied unth a spasmodic affection of the glottis. The disease is marked by many of the symptoms of gennine croupv and is probably the most common form of croupal disease met with in this country.- -C] The main exciting cause of laryngitis is exposure to cold, or to cold and wtt. My hospital patient, Kent, was a seller of small wares in the streets, and must, therefore, have been habitually in the way of such causes. The first attack of the disease in Sir J. M. Hayes was brought on by exposure at an open window to the night air for some time, while he was undressed, and in a profuse state of perspiration, with a strong breeze blowing upon him. Dr. Craigie states that young persons from tro- pical climates, from the West Indies for example, are apt to be attacked by laryn- gitis soon after their arrival in Europe. The disease is liable to be produced also by mechanical violence, or chemical injury done to the larynx. It has been caused, on several occasions, in children, by their atteinpting to swallow boiling water from the spout of a tea-kettle ; and life ha-* been saved in such cases by the performance of tracheotomy. The mineral acids, taken as poisons, have excited the disease. Fatal laryngitis has followed the incau- tious application of ammonia to the nostrils, in cases of hysteria, and of suspended animation : and I once knew a man nearly killed by the inhalation of the fumes 500 ACUTE LARYNGITIS. evolved from cinnabar thrown upon a hot iron, in what is called fumigafion of th« throat for venereal ulceration of that part. I am afraid that I must confess also to have once seen acute laryngitis produced by a bungling attempt to introduce the stomach-pump, in a case of poisoning. i. In all these cases the lar}mgitis is primitive. But laryngeal inflammation, and « especially laryngeal oedema, not unfrequently take place, and prove suddenly fatal, in the course of other diseases. I have apprised you that in cynanche tonsillaris, the inflammation sometimes steals onward to the larynx. I have seen two or three cases of erysipelas of the head, attended, as it almost always is, with sore throat, wherein death took place suddenly and unexpectedly, and where the epiglottis, and the edges of the fissure of the glottis, were found to be oedematous : the inflammation of the throat had extended to the areolar tissue beneath the mucous membrane of those parts, and had led to the effusion of serous fluid there. The very same thing is apt to happen in other forms of exanthematous disease attended with sore throat, and especially in small-pox, measles and scarlet fever. I have known a similar condi- tion of inflammatory oedema arise from a mercurial sore throat in a broken-down constitution, Tn these cases the laryngeal affection is consecutive, and secondary; and in all of them the great remedy is the formation of a sufficient aperture beneath the obstructed glottis. In all of them, also, the essential symptoms, warranting and demanding the operation of tracheotomy, are the same. A distinction has been made between laryngitis and oedema of the glottis ; and it is a just and real distinction. Qildema of the loose areolar tissue subjacent to the mucous membrane of the glottis, is, indeed, one common consequence of inflammation of that membrane : but it may occur independently of inflammation. The hps of the glottis become tumid and dropsical ; sometimes, (as I have just pointed out,) in consequence of a low inflammatory action in the throat, but sometimes also from obstruction of the veins leading from that part. When laryngeal dyspnoea accompanies aneurism of the thoracic aorta, it may, in some instances, result from local dropsy tlius produced ; and then tracheotomy is fully justifiable, and indeed demanded. The main practical difTerence between mere oedema glottidis and acute laryngitis, is this : that in the former, there being no fever or inflammation, blood-letting is not requisite ; and the operation of tracheotomy becomes the sole resource to which, in the extremity of danger, we can look for help. Mere oedema glottidis is seldomer attended with dysphagia, too, than is laryngitis : yet if the epiglottis be involved in the oedematous swelling, and unable to shut over the glottis, the act of swallowing will be followed by strangling cough, and increased dyspncEa. Besides the afTcctions which I have now described or referred to, the larynx is Fiable to chronic disease : to chronic injlammation ; chronic thickening of the mem- brane ; slow idceralion : necrosis of its cartilages. Chronic inflammation and ulce- ration of that part are very common in consumptive patients. It is attended first with hoarseness, then with aphonia, a barking or stridulous cough, and all the melan- choly accompaniments of tubercular phthisis. There has accordingly been a species of phthisis spoken of as phthisis lurijngea. But in most, if not in all cases, this laryngeal afTection is only a part of the complaint under which the patient labours ; and what I have further to observe respecting it, I shall postpone until we come to the consideration of tubercular consumption, Acain, the membrane lining the laryngeal cartilages is not unfrequently thickened and ulcerated in secondary syphilis ; giving rise to a hoarse croaking voice, and a noisy and painful breathing. In such cases, or in chronic thickening of the same parts from common inflammation, you may do great good by gently introducing mer- cury into the system, until the gums rise. I have again and again seen the uneasi- ness about the throat, the noisy respiration, the rough or whispering voice, all cease, as if by enchantment, so soon as the specific influence of the mercury became manifest. There was a woman Avho used to apply at the Middlesex Hospital for an affection of this kind : whether it was syphilitic or not I could not well determine, but she lost it under the employment of mercury, two or three times : the complain* CHRONIC AFFECTIONS. 501 returning again after the interval of a few months, upon the re-application of some irritating cause. In another female patient, who was long under my care in the hospital with similar symptoms, every thing failed to give permanent relief, till I began to leech the neighbourhood of the larynx repeatedly. She had four leeches applied, I think, every night, and then every other night, for a fortnight or three weeks ; the hoarseness and difficulty of respiration gradually diminishing all the time, until at length the perfect use of the instrument of the voice was restored. In these cases, while using local depletion, or mercury, it is often necessary to uphold the strength of the patient by nourishing but unstimulating diet : and it is always expedient that the organ should be kept, as much as possible, in a state of repose. It is said that a little practice will enable a person to pass his finger into a patient's throat, and to familiarize his sense of touch with the ordinary condition of the upper part of the respiratory apparatus, so as to be able to detect swelling, or irregularity, or thickening about the chink of the glottis. And great advantage is said to have been obtained from applying remedies directly to the diseased or irritable part. This practice was much followed by the late Mr. Vance, who had been for many years a naval surgeon ; and he called it, in naval phrase, swabbing the affected organ. A small piece of sponge, secured with a string, or fastened to the end of the finger of a glove, is dipped in a strong solution of nitrate of silver, and then carried down into the throat, as far as that spasmodic state of the muscles which the attempt induces will permit, and pressed downwards against the superior surface of the larynx. I believe other stimulating applications are sometimes employed in the place of the nitrate of silver. Now of this method of cure I do not know much, except by report. I have heard that many cases of chronic hoarseness and cough have speedily been cured by it. But I have more than once had what seemed satisfactory evidence of the beneficial effect of this expedient. The man Kent, whose case I have related, gradually regained the power of easy breathing through the natural passage ; and the opening, which Sir Charles Bell had made, closed up perfectly. About a week after this took place, he began again to respire with a wheeze almost as audible as that which existed at the time of his admission : and to speak in a hoarse voice ; and a night or two after the return of the wheezing, he had a paroxysm of extreme dyspnoea. I began to be afraid that the whole process of laryngotomy and the metallic tube would be again requisite. However I got Sir Charles Bell to examine the interior of the throat, and we agreed that it would be advisable to swab the epiglottis and upper part of the air-passages with a strong solution of lunar caustic. For he had no fever, and we thought it probable that the membrane might have been left lax, and in a state to be benefited by astringents. Sir Charles applied the sponge with very little difficulty ; and the next day the breathing was greatly im- proved, and the hoarseness almost gone : and he never had, from that time, any recurrence of troublesome dyspnoea. Mr. Arnott has twice or thrice, at my request, swabbed the upper part of the larynx for intractable hoarseness and aphonia : but with no good, nor any bad con- sequence. The lining membrane of the larynx is liable also to warty growths, which impede the entrance and exit of air, and ultimately destroy life. There are several examples of that kind on record. I extract the following from my note book : — George Tenon la Font, aged 11, admitted March 4, 1828. He speaks in a whisper; complains of difficult breathing, and of cough. Inspires with a loud wheeze. Coughs with a sort of whistling sound, as through a narrow tube. — The cough is most troublesome at night. Expectoration mucous, and inconsiderable in quantity. H?is been ill, in this way, all the winter — having had hooping-cough in the pre- ceding autumn. There are marks of cupping on his throat. Little can be heara in the chest, the loud wheeze of his respiration obscuring all other sounds. In about a fortnight his gums were brought under the influence of mercury. No perceptible improvement ensued. A careful examination was again made of the thorax, and the conclusion arrived at was, that the obstacle to his respiration lay in the larynx or upper part of the trachea, and that the lungs themselves were not concerned 502 CYNANCHE TRACHEALIS. After this, a blister to the throat, a seton near the thyreoid cartilage, smaL doses of ipecacuanha, emetics, and iodine were successively tried — but in vain. Towards the end of the month he began to suffer occasional, very violent, and apparently- spasmodic attacks of extreme dyspnoea. He died during the night, two months after his admission. For some days before he had been manifest!)^ worse than usual, was more feeble, wandered somewhat, and complained that his vision was imperfect. No noticeable increase had taken place in the difficult}'- of breathing, except during the paroxysms of aggravation already mentioned. His death was sudden, and pro- bably took place in one of these paroxysms. When the body was examined, the lungs were found sound as to structure, but copiously infiliered, especially on the left side of the thorax, with serous fluid. At the very top of the larynx, involving the base of the epiglottis and the vocal cords, was a considerable warty growth, closing the rima glottidis almost entirely. The excrescences sj^rang chifjly from one continuous base, and branched out precisely after the manner of what is vulgarly called a seedy wart. There were, however, several distinct smaller growths or warts. The main excrescence, having several heads, passed upwards from and through the rima, and so came to act partly as a valve during inspiration, which was always sensibly more difficult than expiration. Ought tracheotomy to have been performed in this case ? I now think so. But supposing it to have been done, and to have been successful, the boy would have been under the necessity of breathing through an artificial tube for the remainder of his fife. There are two excellent specimens of warty growths in the larynx upon the table before you. I might have referred, when speaking of chronic enlargement of the tonsils, in the last lecture, to the case of a little boy at present under the care of one of my col- leagues. He was brought to the hospital on account of great dyspnoea, and a hissing respiration, produced apparendy by two enormous tonsils. With some difficulty (arising from his unmanageable age) a large part of one of the tonsils was cut off with scissors : but after the operation (either from some fresh swelHng of the parts, or from pressure made by the remaining tonsil, which grew downwards, I under- stand, into the throat), his difficulty of breathing became extreme ; and it was thought necessary to perform tracheotomy, which afforded him signal relief. He breathed for some time through the artificial opening in his windpipe. At length the other tonsil was partly removed : and the child is now well, and about to be discharged. LECTURE XLVI. Cynanche Trachealis ; Symptoms; Pathology; Prognosis; Treattnent Child' crowing, or Spurious Croup, I PROCEED this afternoon to another of Dr. Cullen's species of cynanche ; the last that I propose to consider in this part of the course : viz., cynanche trachealis — tracheitis — croup. The essence of this complaint is violent inflammation, affecting the mucous mem brane of that portion of the air-passages which lies between the laryngeal cartilages and the primary bronchi; in one word, of trachea, or wind-pipe. That is the genuine seat of the disease ; but the inflammation sometimes ascends into the larynx; and not unfrequently it dives into the bronchi and into their ramifications. [In perhaps tne majority of cases, the inflammation in croup commences in the mucous iiiembrine of the larynx, and from thence extends into the trachea — the disease is there- fore, strictly speaking, a laryngeo-tracheitis. In many instances, however, -we have reason to believe that the inflammation commences in the bronclii, and from thence exter.ds to the tiach'ia; but there are ii'e suspect, very few cases indeed, if any, in which the disease ia CYNANCHE TRACHEALIS. 503 confined to the %rach^a. In cases of croup that have terminated rapidly in death, the in- flammation and pseudo-membranous exudation which form so striking a feature in this dis- ease are found only in the larynx and upper portion of the trachea — when death occurs at a later period the exudation is often present in the trachea alone, or in the trachea and bronchi ; it is never /ound to exist in the latter tubes alone. It has been attempted to be shown by Jurin and others, that, in the ordinary form of croup, tlie disease is, in its first stages at least, simply a tracheitis, and that in the more violent and rapid form, (suflbcating croup,) the inflammation is confined to the larynx. Although this is not true, as is shown by tlie result of numerous dissections, yet our observations have shown us, that in cases marked by symptoms of great violence, which are sudden in their onset and rapid in their progress, tlie indications of inflammation are to a mucli greater extent, and the pseudo-mem- branous exudation more cojjious about the larynx, glottis, and upper portion of the trachea, than in cases in which the disease succeeds to bronchitis, runs a more protracted course, and is attended by symptoms of less violence. For a more detailed account of the pathology of croup, the reader is referred to the Editor's Treatise on Diseases of Cliildren, page 301 et scq. — C] Cullen makes no distinction between cynanche trachealis and cynanche laryngea. Yet they are separated from each other by very definite boundaries. They differ in anatomical position : tliey differ in gravity. Both indeed are serious diseases; but croup is the more serious, because it seldom admits of that mechanical relief whicn, when rendered in time, deprives cynanche laryngea of its dangerous character. The two disorders differ also in respect to the period of life at which they occur. Idiopathic laryngitis is seldom met with except in adults; croup seldom after the age of puberty. Cynanche trachealis is indeed a very remarkable disease, for it exhibits an event of inflammation which does not usually belong to that process when it affects the mucous tissues. In this, too, it differs from larj^ngitis. I say that croup is peculiarly a disease of early life. The interval that lies be- tween the two periods of loeaning and puberty, is the time during which its visitation is chiefly to be apprehended. Comparatively few cases of it occur during the first year of infantile life. There are more in the second year than in any other. This, in all probability, is connected with the change that ensues in regard to diet, upon the child's being weaned. Dr. Cheyne, whose experience of croup was very ex- tensive, says, that the younger children are when weaned, the more liable are they, cxteris paribus, to this malady. From the second year onwards the number of children affected with croup gradually decreases. Of ninety-one instances referred to by Jurin, one only was after the tenth year. But it does occasionally happen subsequently to the period of puberty, and up to the twenty-first year ; and even later. A girl of nineteen, one of my hospital patients, died of it. Some of the cases recorded of croup in the adult, were probably, in reality, cases of laryngitis. [We Iiave met with the disease most frequently in children between ten months and five years old. By numerous writers the occurrence of croup previous to the seventh months has been denied ; others, however, declare that they have seen it to occur, as a primary disease, repeatedly, at an earlier period. — C] It is curious that inflammation should thus, at different epochs of life, fix itself upon limited portions of the same continuous surface, and lead to consequences so diverse. We are unable to give any account of this. Cynanche trachealis is frequently preceded by a slighter and more diffused affec- tion of the membrane lining the air-passages. The child has what is popularly called a cold ; sneezes, coughs, and is hoarse. Now with respect to this last symp- tom. Dr. Cheyne makes the following practical remark. Hoarseness (he says) in very young children, does not usually attend common catarrh. When noticed in a district where croup is not unfrequent, it ought to put the parents or the medical attendant of the child upon their guard ; especially as much depends upon the early treatment of the disorder. With these symptoms the child is feverish and fretfui, and does not sleep well. In the course of a day or two the signs peculiar to croup begin to show themselves : they are well stated by Cullen, in his definition of the complaint. " Cynanche, respiratione difficili, inspiratione strepente, voce rauca, tussi clangosa, tumore fere nullo in faucibus apparente, deglutilione parum difficili, cum febre synocha." These are the phenomena that characterize croup. Di/fi- 504 CYNANCHE TRACHEALIS. culty of breathintr, and sonorous inspiration. The last is often almost enough, of itself, to identify the disease. Hoarseness; a gruff voice; sometimes a total loss of the power of vocal speech. A very peculiar and distinctive cough, to which the epithet "brassy" has been justly applied ; the noise resembling that which would be occasioned by coughing through a brazen trumpet. This remarkable sound is always easily recognized when it has once been heard. It is a ringing cough ; and '.he expiration has a ringing character ; and either of these, the cough or the expira- tion, is followed by a loud crotcing inspiration. Then there is the negative symp- tom ; the absence of nny difficulty of swallowing; and with all this, inflammatory fever ; a flushed face, hot ."^kin, a frequent hard pulse, thirst. However, it is by taking the symptoms collectively, that we judge of the existence of croup, and by the rapid progress of the disease, rather than by any particular or pathognomic sign. Some of the symptoms may occur, separately, when there is no croup. The brassy or metallic cough, for instance, has been known to accompany some chronic affections of the larynx. Dr. Gregory — the late Edinburgh Professor of Physic — knew a man with a venereal disease of the throat who coughed so exactly the cough of croup, that he was admitted into the clinical wards of the infirmary every session for some years, that the students might have an opportunity of hearing this peculiar sound. So also the remarkable crowing inspiration may take place, as we shall soon see, without croup. In the outset the fever generally runs high ; and it is of importance, as respects the diagnosis, to mark the presence or the absence of pyrexia. As the obstruction to the passage of air increases, the blood ceases to be duly arterialized : and then, of course, the skin grows dusky, the pulse feeble and irregular, the extremities cold. The cough, also, as the malady thus goes on from bad to worse, ceases to be loud and clanging, becomes husky, and inaudible at a short distance, and the voice sinks into a whisper ; the head is thrown back ; the nostrils, in perpetual motion, dilate widely ; the face is pale and livid, and sometimes bloated ; the pupils often expand. When these indications of sinking have come on, the case usually terminates ill : the bottoms of the feet turn black and hard ; drowsiness supervenes ; some tossing of the arms perhaps ; the breathing becomes gasping and interrupted, and the child dies after an inspiration. In other cases the croupy symptoms make their attack very suddenly. A child shall go to bed apparently well, and in the course of the night have all the worst signs of the disease. And it is observable, that whether the attack be altogether unexpected or whether it has been preceded by hoarseness, sore-throat, and catarrh, it usually comes on in the night. [These will be generally found, however, to be cases of spasmodic laryngitis or false croup, and to be unattended witli the formation of false membrane in the larynx or trachea. — C] Croup resembles laryngitis in this respect, that it runs its course rapidly, proving fatal sometimes within twenty-four, and often within forty-eight hours. It may, however, continue for five or six days before it terminates, whether death or recovery be the result. Dr. Craigie affirms that it is never protracted beyond the eleventh day ; the fatal or the favourable issue having always taken place by that time. Life is de- stroyed, in pure circumscribed tracheitis, by the accumulation in the windpipe of a concrete membrane-like substance, which so frequently attends this disease, and is so peculiar to it, that it is called the membrane of eroiip. In cases of recover}^ this substance has been expectorated in the form of a nearly perfect tube, representing a cast of the trachea; at other times it is coughed up in flat or tubular fragments. In fatal cases it is found sometimes lying in close contact with the mucous membrane, and sometimes quite detached from it ; so that it might have been expelled without much forcing or diflicultv, if the child could have sufficiently inflated its lungs;, and the requisite muscular power had remained, and spasmodic irritabihty of the glottis had not op])osed. But, in many instances, this albuminous exudation is not confined to the trachea. It often stretches down to, and enters the ramifications of the bronchi, and reaches ••ven to their termination in the pulmonary vesicles. Sometimes also it is found CYNANCHE TRACHEALIS. 505 clothing the mucous membrane belonging to the laryngeal cartilages. This Dr. Craigie denies. But I show you two specimens in which the false membrane, besides filling the trachea, evidently extends into the larynx. One of these comes from the museum up stairs ; the other I have borrowed from the Middlesex Hospital Museum: it is the larynx and trachea of the young woman whom I mentioned just now as having died there of croup, at the age of nineteen. The false membrane reached from the tip of the epiglottis to the bifurcation of the trachea. You see the same thing represented in this excellent plate of Dr. Carswell's, pictured from nature. Usually the adventitious membrane commences just below the larynx, where it is thin and soft : about the middle of the windpipe it is more dense and firm ; lower down in the trachea, and in the bronchi, it is generally looser again, pulpy, and broken: it sometimes, I repeat, penetrates to the very air-cells. What are called (absurdh'^ enough) bronchial polypi, branch-like casts of the smaller ramifications of the air-tubes, are then apt to be coughed up. And even when this concrete substance is not formed, we have other evidence, often, of the extension of the inflammation throughout the whole downward course of the membrane. On the other hand, there are a few cases in which this adventitious membrane is not formed at all ; the inner surface of the windpipe is seen to be merely reddened and tumid, and covered with viscid mucus ; or perhaps with a shred or two of con- crete albumen here and there. The difficult}'- of breathing, and the characteristic sounds that accompany it, depend, in part, I believe, upon spasmodic contractions. of the small muscles of the lar3nix ; for remarkable aggravations of the dyspnoea are apt to occur, and to subside again ; and these aggravations are sometimes brought on by sudden causes — by the movements of deglutition, for example. I shall have to recur to this spasmodic constriction of the glottis : but I may here remark, that because it has not been (and cannot be) seen, doubts have been expressed by some about its having any thing to do with the dyspnoea. Such doubts seem scarcely reasonable. It is easy, at any time, by an effort of the will, to close the glottis, and to prevent the passage of air to and from the lungs. This is mainly effected by the action of the little muscles that bring together the arytenoid cartilages. But those muscles, like the other muscles concerned in respiration, act also inde- pendently of the will, spasmodically therefore, through the reflex function of the spinal cord. And it is by a providential and conservative appointment that they do so act, as janitors, admitting, in the healthy state, the vivifying air, but barring the door against certain hurtful gases, and against solids and liquids which would be injurious to the respiratory apparatus. We know that if a drop of water, or a crumb of bread, or a whiff of carbonic acid gas, gets past the outer defence, the epiglottis, and into the larynx, spasmodic action of the little muscles in question is instantly excited. We cannot see these intruders, and voluntarily resist their entrance, but the unsleeping sentinel is there to guard the passage. We may well conceive, there- fore (and I know not how the supposition can be disproved), that the noisy and diffi- cult respiration of croup may be caused, in part, by spasm. [As further evidence of the correctness of this remark may be adduced those cases in which all the diagnostic symptoms of croup are suddenly in bi" often produced by the child's silling, or sleeping, in a room newly washed: CYNANCHE TRACHEALIS. 507 and that he has noticed its frequent occurrence on a Saturday night — ihe only day in the week on which it is customary for the lower orders in Edinburgh to wash their houses. Like cynanche tonsillaris, and unlike cynanche parotidcea, the croup is exceeding apt to recur. Relapses may happen within a few days after apparent recovery ; and these are very perilous. But besides this tendency to a renewal of the severer symp- toms, the little patients are often affected with cough, and hoarseness, and even with aphonia, for a long lime. And Avhile these relics of the acute attack continue, it is eajily brought back again. The first seizure is generally, I beheve, the worst : but to this rule there are numerous exceptions. [The remarks contained in the foregoing paragraph are applicable rather to Spasmodic La- ryngitis than genuine croup. — C] Croup is a disorder which justly excites extreme alarm in the friends and parents of the patient : for the prognosis can never be better than doubtful. It is said that four children out of five attacked by it used to die : but that now, the treatment being better understood than formerly, the number of deaths and the number of recoveries are nearly equal. We judge of the probable issue, in a given case, by the apparent circumstances and progress of the malady. If we could see the interior of the air- tubes, we should know that the chance of escape was small, in proportion as the inflammation, and its albuminous product, descended along the ramifications of the bronchi. But in these little patients, and amid the tracheal noises, it is difficult to ascertain the physical state of the lungs. The prognosis is chiefly to be collected from the general condition of the child. If the distress of breathing seems to remit, And free expectoration to come on, while the strength is yet entire, we venture to hope. On the other hand, we begin to despair when the lips are becoming blue, the skin is losing its heat, the pulse is already feeble and intermitting, and the little pa- tient is drowsy or comatose : in other words, when we perceive the final symptoms of death in the way of apnoea. Some few patients die suddenly and unexpectedly without any previous coma. The mortality will differ according as the disease is detected early, and treated vigorously, — or otherwise. And with respect to treatment, there is no specific re- medy for this, any more than for any other inflammation. We must put in force the general principles upon which the treatment of inflammation is founded ; adapt- ing them, however, to the malady in question by those particular rules which the experience of the best observers has collected for our guidance. I need scarcely say that where cough and catarrh, and especially hoarseness or loss of voice, are noticed in a young child, he should be narrowly watched, and protected against all circumstances likely to excite or to aggravate; inflammation : he should be kept in the house, and put upon farinaceous diet ; and the functions of the bowels and of the skin should be attended to. The three remedies that most require consideration are blood-letting, tartarized antimony, and calomel. Bleeding is to be unhesitatingly employed when the patient is strong, and ple- thoric, and seen in the outset of the disease. In judging of its mode, and of its amount, we must recollect that what is no more than a topical bleeding in an adult, becomes equivalent, in its effects upon the system, to general bleeding, when it Is used for a very young child. Abstraction of blood, by venesection or cupping in the case of older children, and by leeches in the case of infants, should be practised whenever the symptoms are violent, and there is much fever, and the patient is seen within a few hours after the commencement of the symptoms. The relief that is given by this measure, under such circumstances, is often so decided, that no doubt can remain of its usefulness and propriety. It is impossible to lay down any fixed rules for the quantity of blood that shoulo be taken in this complaint. Under two years of age, it should not, sa3's Dr. Cheyne, exceed five ounces. I should esteem that a large bleeding, at that age. Upon an average, a moderate bleeding will be produced by the application of a couple of leeches to an infant in its first year: and an additional leech may be employed for 508 CYNANCHE TRACHEALTS. every additional year : so that six may be put to a child five years old ; or eight if he be stout. Dr. Copland estimates the amount of blood which these patients may, with safety, bear, to be somewhat more than an ounce, or as much as an ounce and a half, for everj^ year of their age. Much, however, must depend upon the special circumstances of the case: the quantity of blood extracted by a given number of leeches is less in one instance than in another; and then, of course, the number must be increased. They should be applied at the upper part of the sternum, and not upon the throat itself; for this reason : — that the pressure which may be neces- sary to stop the bleeding, or to regulate its quantity, cannot well be borne upon the throat in these cases. After one sufficient evacuation of blood, whether by means of the lancet, or of leeches, or of cupping-glasses applied between the shoulders, it will always be right, before repeating it, to ascertain the effects of other measures ; such as emetics and purgatives, the beneficial operation of which, in this disorder, is often very re- markable. Full vomiting sometimes affords relief so sudden and complete, as to lead to the persuasion that the symptoms had been principally owing to spasm. And eyen when the disease is unequivocally inflammation — sometimes even late, but particu- larly in the early part of its course — the effect of a vomit is often very striking. It promotes expectoration ; and is not unfrequently followed by the expulsion of shreds of the adventitious membrane. When blood-letting is employed, it sliould precede the emetic ; or, at any rate, it should precede the act of vomiting. Dr. Cheyne recommends that the bleeding should be practised ten minutes after the emetic has been swallowed. The loss of blood assists the operation of the emetic, and lessens the risk (which is not a fanciful one) of injurious congestion of the vessels of the head during the straining efforts of vomiting. It is desirable, not simply to excite the act of vomiting, but to produce and to pro- long a state of nausea and faintness : and so to depress and to keep down the in- creased action of the heart, and to keep empty the capillary vessels of the inflamed part. Now the substance best adapted to this purpose is tartarized antimony. This medicine, as I have often mentioned before, has great power over inflammation of the mucous tissues : and there is one very great advantage belonging to it in cases of croup; namely, that children may be induced to take it without their knowing that they are taking medicine ; for the solution of it has little or no taste : whereas the struggling which is often occasioned by the administration of other emetics may be the cause of much inconvenience, and even of much injury to the patient. It should be dissolved in boiling water, in the proportion of a grain to an ounce ; and the cold solution given, A tea or a dessert-spoonful may be repeated every quarter of an hour, till some efl^ect is produced. When vomiting is thus excited on the very first appearance of the symptoms, and before the disease seems thoroughly formed, it sometimes puts it off: so that no other treatment remains necessary beyond the exhibition of some purgative medicine. But if this perfect relief does not ensue upon the operation of the emetic. Dr. Cheyne advises (and this is in conformity with the practice of many other persons), that a powder, consisting of two, three, or foui grains of calomel, with two or three grains of James's powder, should be given at short intervals; every two or three hours, for example. A dose of castor-oil is to be admmistered occasionally, to clear the bowels. And another expedient, of great efficacy sometimes, and therefore never to be omitted, is the warm bath. This is often properly resorted to just after the act of vomiting, particularly if any tendency to perspiration is apparent. The temperature of the water should not be lower than 98° Fahrenheit; and the child should remain in the bath for ten minutes at least. W'iien taken out, he should be wiped dry, and put immediately into bed again. The change for the better produced by the bath is sometimes so marked and so speedy as to strengthen the conclusion that the most distressing of the symptoms had •esulted from spasm. The usual efiect of calomel thus frequently repeated is not, as in adults, that of causing salivation, but the discharge of a quantity of green fecal matter, resembling chopped spinach : and when stools of this kind begin to make their appearance. CYNANCHE TRACHEALIS. 509 there is often a sensible mitigation of the symptoms. The green colour is a common consequence of mercury given to young children ; and will occur, I believe, Avhat- ever be the disease, when the full effect of calomel as a purgative is obtained. The green matter has been found, after death, in all the intestines, small as well as large, up to the duodenum. I presume that the colour is owing to some chemical action that takes place between the calomel and the bile. We know that calomel does tinge bile green when mixed with it out of the body. It may be, however, that the calomel provokes a flow of altered bile. Calomel, thus administered, is the purgative that has received the strongest recom- mendations. Its usefulness appears to have been fully borne out by the test of ex- perience : and the well-known virtue belonging to mercury, of preventing or arrest- ing the effusion of coagulable lymph in other textures, has formed (I conceive) one cogent reason for its adoption in this disorder, of which the chief peril results from the pouring forth of the albuminous part of the blood. But whether mercury really has the same power of controlHng adhesive inflammation, when that process is set up in mucous tissues, which are so commonly exempt from it, may be questioned. On the other hand, the effect of full doses of tartar emetic in restraining active inflam- mation of those tissues is well ascertained : and I should certainly make use of it in the early stages of this dangerous malady. The system can be brought to feel its decided influence with much more certainty, and in a much shorter space of time, than that of calomel : and if it fails to make a beneficial impression, it need not long interfere with the mercurial treatment. Let me quote to you the statement of Dr. Cheyne (whose experience of this disease was far ampler than mine has been,) re- specting the efficacy of tartarized antimony in what he calls the second stage of croup. He recommends that half a grain, dissolved in a tablespoonful of water, should be given to a child two or three years old, every half hour, till sickness and vomiting ensue. In two hours after the last effort of vomiting, the same process is to be recommenced ; and so repeated while the symptoms require it, and the strength will permit. This mode of treatment was suggested to him by the accidental ob- servation of a particular case, in which it was remarkably successful. From that time he placed his whole reliance on that remedy in the second stage of croup ; especially as he had found that blood-letting in that stage only accelerated the death of the patient. He noticed that the cases were few in which he had known children survive the second stage, but in all of these few, they recovered while using a solu- tion of tartarized antimony. He held that no other medicine was, at that stage of the disorder, entitled to confidence. In short, he declared that tartar emetic, so given as to produce continued nausea, had been his sheet-anchor, in the treatment of croup, since the year 1799. This was written in 1801, in a separate work on the patho- logy of the larynx and bronchi ; and Dr. Cheyne recently has affirmed, in the Cy- clopfedia of Practical Medicine, that he still found reason to adhere to the same opinions, and the same practice. Now what is good for the second stage, would, a fortiori, I think, be likely to save life, if employed during the earlier stage of the disease. I therefore should say, take blood in the very outset, as largely as may seem prudent : then give the tartar emetic solution in the way already described. As soon as it causes vomiting, and pallor, and a sinking of the pulse, stop ; and suffer the heart to recover itself. And if, with the rallying circulation, the difficulty of breathing returns, have recourse again to the same remedy. The faintness and collapse are sometimes so great as to threaten the extinction of life: the child, with a flying pulse, and a clay-cold sur- face, seems gasping its last. When this happens, a few drops of sal volatile, or of brandy, mixed with water, will presently bring the little patient round again. If no ground is gained after two or three repetitions of the nauseating treatment, then it will be well to make trial of the calomel plan. Sometimes the tartar emetic acts severely on the bowels : it may occasionally, therefore, be necessary to combine with it a small quantity of syrup of poppies, or of laudanum. Blisters are often applied in this disease ; but with very questionable propriety. In the outset thev are likely to do harm ; in the advanced periods thev are not likely 2s2 510 CYiNANCHE TRACHEALIS. to do good. If used at all, they should be placed, not on the throat, but across the upper part of the sternum. [We do not approve of the u«e of blisters in this disease; but if applied, they should onlj be kepi on for a few hours, so as to tender the skin. — C] When signs of approaching death have come on — lividity of the lips, coldness of the skin, and a tendency to stupor, the question ivill obtrude itself, whether there may not still be a chance of saving the patient by performing tracheotomy. In the first place you will consider that the operation is much more difficult to execute upon children than upon adults ; and is attended with more perplexing hemorrhaoe. But there is a greater objection than this to tracheotomy in such cases ; an objection which you will have anticipated, namely, the existence of the preternatural membrane ; which often extends so far down, that air would not be admitted into the lungs, even if an aperture in the windpipe were made at the lowest possible point. Another consideration, forbidding much hope of success from this expedient at any period of the disease, is that the ramifications of the bronchi and the ultimate air-cells get filled up with serous, or mucous, or puriform matter, or even sometimes with a mem- branous exudation, whereby suffocation is effected in the lungs themselves. The membrane in the trachea, being tubular, does not entirely exclude the air from those organs ; but it does not admit it in sufficient quantity. Tracheotomy has attain and again been practised in this complaint to no purpose : and I should be inclined to look upon it as absolutely hopeless, but for two instances of its successful perform- ance, recorded in the Medico-Chirurgical Transactions : the one achieved by Mr. Andre, and related by Dr. Farre, in the third volume ; and the other by iVlr. Che- valier, in the sixth volume. These were both apparently desperate cases. Immediate relief followed the operation in both, and the patients recovered perfectly. There seem to be just two predicaments in which there is a chance that tracheo- tomy may be useful. They are perhaps rare : yet they have been noticed by several observers. The one is where the preternatural membrane extends but a very little way down the trachea, and is chiefly confined to the larynx ; and the other is where there is no preternatural membrane at all, or only a very slight coating in some part of the trachea, the impediment to the breathing having arisen mainly from the thickening of the mucous membrane. And you will observe that an impediment from this cause will always be the greatest at the narrowest part of the canal: and therefore incision of the windpipe in such a case may be expected to bring relief. The effect produced by the tracheotomy in Mr. Chevalier's case was very instruc tive. Air was fully inspired through the opening, then a strong cough took place, by which a large quantity of viscid reddish mucus was forced out by the natural channel, through the glottis. It was evident that the child could not expectorate before, simply because it could not sufficiently fill its lungs with air to drive the collected mucus out. Dr. Farre gives a circumstantial account of a case in which the adven- titious membrane did not reach more than a finger's breadth below the cricoid car- tilage ; and the rest of the tube was so free that he was convinced the child's fife might have been saved by a timely opening into the trachea. Unfortunatelj', we cannot tell, before death, to what degree or extent the preternatural membrane exists. All that can be said, I think, is, that when dyspnoea and much croup come on sud- denly or quickly, the disease is probably limited to the larynx and upper part of the windpipe : but that when the progress of the disorder is slower, and the croupy symptoms are not so well marked, it is more likely that a greater extent of the tra- chea, below the larynx, participates in the mischief. Our expectations of success from tracheotomy will vary accordingly. It affords a bad chance at the best ; but it affords also, in many cases, the only chance. [The subject of tracheotomy in croup is one of considerable interest. — That it may, in many cases, •when timely performed, save the life of the patient, we have the most unques- tionable evidence. In a statement by M. Trousseau of the result of the operation, as per- formed by himself, and by others, according to his method, in one hvmdred and fifty cases, the patients were saved in thirty-nine. In the case of his own child, three weeks old, re- cently published by Dr. Scoutetten, the operation was performed on the thi^ day of the ilisease, under circumstances apparently the most desperate, with complete success — the I CYNANCHE TRACHEALIS. 511 infant recovering in a short time from the effects of the operation as well as from every symptom of the croup. The class of cases, the period and particular circumstances of the disease in which the operation is most likely to atford relief, are questions of no little im- portance, and we believe that much of the want of success, which many practitioners have experienced in performing the operation, is to be attributed to its having been resorted to under improper circumstances. M. Trousseau, whose experience on this subject has been somewhat extensive, has presented the following as a summary of the prognosis of tracheo- tomy in croup — " 1st. If the commencement of the attack dates several days back, if, consequently, the disease has advanced slowly, whatever may be the extent of the false membranes in the trachea and bronchi, the children either recover, or live at least several days after the ope- ration. " 2d. But if the disease has been very rapid, even although at the time of the operation, we ascertain that the false membranes do not extend beyond the larynx, the children die very quickly. "3d. If previous to the operation, the false membranes have extended to the nares, or if they cover the blistered surfaces ; if the child is pale and somewhat bloated, without hav- ing taken mercury or been bled, or if he has lost much blood, there is little chance of tha operation succeeding. " -Itli. If previous to the operation, the pulse is moderately frequent, and if, after it, the pulse remains calm, hopes may be entertained. " 5th. It is a bad sign, if, immediately after the operation, the respiration becomes very frequent, without any cough or with very little. " Otli. More boys than girls are cured. *^ 7tli. Children under two, and over six years of age, rarely recover. " Stli. The more deeply the false membranes have extended, the greater, ccBteris paribus^ the danger. " 9th. If the child has been subject to chronic catarrlis, and if he had been suffering from a cold for some time when he was attacked with the croup, tracheotomy is rfiore successful. " 10th. Even when all is going on favourably, very great frequency of respiration is a bad sign. ' 1 1th. The more rapid and energetic the inflammation which attacks the wound in the trachea, the better are the chances of success — a sudden sinking of the wound is a mortal sign. " r2th. So long as the respiration is silent or the noise is only occasioned by the displace- ment of inucosity, there is nothing to fear; but when the respiration becomes saw-like (ser- ratiquc), in other words, when it is attended with a sound like that produced by a saw cut- ting stone, death is certain. '•13th. Tliere is no reason to despair of the patient, even if a pneumonic or pleuritic attack should supervene. " 14th. Agitation and sleeplessness are bad signs. " 15tli. Should the wound become covered with false membranes; if, after withdrawing the canula, it remains gaping for a long time, or, if after having become entirely cicatrized it reopens largely, the child is in danger. " IGth. The sooner after the operation the larynx is disembarrassed, the sooner may we remove the canula, and the more rapid and certain is the cure. " 17th. If the croup supervened upon rubeola, scarlatina, variola or pertussis, although tliere is not ordinarily any connection between the malignant angina and these pyrexia, tracheotomy does not succeed. " ISth. If the expectoration becomes mucous and catarrhal by the third day after the ope- ration, the children will recover. If there is no expectoration, or it is serous, or like half- dried portions of gum Arabic, they will die. " 19th. If the patients react vigorously under tlie injections into the trachea of water or nitrate of silver, and under the sponging out of the trachea, we should not despair, how- ever unfavourable may be the other signs. " 20th. Children attacked with convulsions after the operation die, and the younger the patients and the more blood they have lost before or during the operation, the more often convulsions supervene. " 21st. When, after the tenth day, the drinks pass almost entirely from the pharynx into tlie larynx and trachea, even if they are readily rejected, the children most generally die. " 22il. The increase of the lever after the fourth day, agitation, sinking of the wound, and dryness of the trachea, frequency of the respiratory movements, and attempts to cough, announce the invasion of pneumonia, which, at first lobular, becomes sometimes pseudo- Icbar, and is to be treated by the same means as are usually employed in the pneumonia of chilflren ; we should, however, exclude blisters, because they too often become covereil with false membranes." (See Rilliet and Barthez, Traiti des Mai. des Enfans, t. i 365-'' 512 CHILD-CROWING, OR There is a sort of bastard croup, with which it is quite necessarj'^ that you should be acquainted, for it is not at all uncommon ; nay, it is far more common in this place at least, than the real disease. It has received a variety of names, which shows that it has been recognized, as a distinct maladj% by various observers. Yet no doubt can be entertained that it has very often indeed been confounded, — and is still continuall)' confounded, — with the true croup, with cynanche trachealis. In their most obvious symptoms the two affections are much alike. The broad and essential distinction between them, is the absence, in the spurious disorder, of inflam- mation and of fever — and consequently of any concrete or other effusion from the mucous membrane of the air-passages. The child is seized all of a sudden, roused perhaps from its sleep by a catch, or interruption of its breathing, more or less com- plete. It strives and struggles to inspire, but is apparently unable to do so ; at length the effort is successful, and the breath is drawn in with a shrill whistling or crowing sound, like that which characterizes the inspirations of croup, or of hooping- cough, and depending, no doubt, upon the same cause — a narrowing (in this com- plaint temporary) of the fissure of the glottis. Spasmodic croup is the most com- mon of its names. It is the thymic asthma of the Germans. My late colleague. Dr. Ley, in a volume upon this curious disorder, published a short time before his death, adopts from Dr. Mason Good the appellation oi laryngismus stridulus. Dr. Gooch called it child-crowing, a homespun term, which I must prefer to the some- what pedantic and cacophonous title bestowed upon it by Dr. Good. The crowing noise, and its concomitant phenomena, take place in paroxysms, which vary in re- spect to frequency and severity, and which are separated by intervals of easy and natural breathing. "When the closure of the chink of the glottis is not perfect, the child struggles for its breath : the respiration is hurried ; the countenance generally bluish or livid ; the ej'es staring ; and each inspiration is attended with a crowing noise. When the closure is more complete (and this state was found by Dr. Ley, whose words I am now quoting, to be much the most frequent at the commencement of the pa- roxysm), the function of respiration is entirely suspended for a while ; there is an effectual obstacle to the admission of air. The child makes vehement struggles, by some termed convulsive, to recover its breath. At varied intervals, from a few seconds up to a mmute, or upon some occasions nearly two minutes, air is at length admitted through the glottis, now^ partially open ; and this rush of air, passing through a very narrow chink, produces the peculiar sound. To these symptoms not unfrcquently succeed a fit of coughing or crying, which terminates the scene : or, if the glottis be not thus partially open, the child, at the end of from two to three minutes at the utmost, w^ill die suffocated. Pallid and exhausted, it falls lifeless upon its nurse's arms ; and it is then that the child is generally said to have died in a fit." Sometimes, but not always, with the symptoms now described there is a con- tracted state of the flexor muscles of the thumb, fingers, wrist, ankle, and toes ; giving to the foot an appearance approaching to that of club-foot. Now till very lately most of those persons who had learned not to confound this child-crowing with true croup, were of opinion that it depended upon cerebral disease or disorder. This was the doctrine of Dr. John Clarke, who has left a very good description of the complaint, which he called "a peculiar species of convulsions." Dr. Ley doubted the correctness of that notion, and believed that the bending of the limbs results rather from feebleness or paralysis of the extensor muscles, than from spasmodic contraction of the flexors. It was obviously a great point to make out, whether the disorder depends upon pressure within the head or not. Our treatment will be regulated by what we know, or believe, in that respect. But what is chiefly original, and very interesting, in Dr. Ley's views concerning this bastard sort of croup is this, that he attributes the temporary closure of the glottis to pressure made by enlarged glands in the neck or chest upon the recurrent nerve, or upon some part of the eighth pair ; " subverting the exact antagonism by which the glottis is automa- tically and involuntarily kept open, and allowing its margins to come together, and to occasion the peculiar kind of inspiration so much hke that of croup." Dr. Lev SPURIOUS CROUP. 513 looks upon the aflection altogether as more allied to paralysis than to convulsive movements. This certainly is a very original, but, I think, a mistaken view of the matter ; 1 must refer you, however, to his book for the facts and reasonings upon which it is founded. The important practical fact is, the connection of the child- crowing with tumefaction of the glands in the neck and chest, and with the entangle- ment of the pneumogastric nerve or its branches among these glands. " Scarcely an instance (says he) has occurred to me since my attention has been very much directed to the subject, in which there has not been the strongest foundation for the belief that either the glandulte concatenatae of the neck, or the thoracic absorbent glands, had become morbidly enlarged." Even in the short period that has elapsed since Dr. Ley wrote, this curious and intricate knot has been somewhat further (though perhaps it is not yet completely) untwisted. Dr. J. Reid has ascertained, by a well-contrived set of experiments, that the inferior laryngeal (or recurrent) nerve, is an efferent or motor nerve, by which nearly all the movements of the larynx are regulated ; and that the superior laryn- geal is an afferent or incident nerve. We may easily conceive, therefore, how pressure upon, or irritation of either of these nerves, may affect the aperture of the glottis. If the superior laryngeal nerve be implicated, the impression is communi- cated to the spinal cord, and thence reflected, through the recurrent, upon the laryn- geal muscles. Irritation of the gastric ramifications of the par vagum may have the same result. It is an observation of Dr. John Clarke's, that the attacks " very commonly take place after a full meal." Nay, it seems probable that not only any of the afferent fibrils of the eighth pair of nerves, but those of the fifth pair also may have a similar exciting power; for a transient crowing is readily produced in some children, by exposure of the surface of the face and chest to a breeze of wind, or by their being suddenly tossed in the arms of a nurse. We must even suppose that the effect produced upon the central cord may, by reflexion, influence other muscles, and cause the contractions that are sometimes observed in the flexors of the feet and hands. Again, if the recurrent nerve itself be pressed upon, or interfered with, undue contraction or paralysis, according to the kind and degree of interference, will be likely to ensue of the muscles belonging to the glottis. Spasm of those muscles would close the chink, and stop the breath. And Dr. Reid has shown that their palsy, except while tlie breathing is perfectly quiet and tranquil, sensibly impedes inspiration, and alters its character. It appears, therefore, that the ingenious view taken by Dr. Ley of the special pathology of this child-crowing disorder, or croup-hke convulsion, merges in the more general principles of reflex function advanced by Dr. Marshall Hall. At the same time it is interestiug to observe how Dr. Ley's theory harmonizes with what has been noticed of the predisposing causes of this crowing inspiration. In the first place, it is often manifestly connected with dentition. Now one effect of dentition is the production of glandular swellings of the neck, which happen even in the absence of all strumous taint, but with still more certainty if any such taint exists. And thus he explains the feet, that the disorder has appeared in the most robust as well as in the most delicate infants. Thus, also, he explains another well- known fact, viz., that, when child-crowing accompanies painful dentition, the sj^mp- toms do not vanish instantaneously, as if by magic, the moment that the tooth starts through the gum, but pass off by degrees. Dr. Ley remarks that, " after the gum and enveloping membrane of the tooth have been relieved from swelling and inflam- mation, by the free use of the gum-lance, some time is still required for the irritation and tumid state of the cervical glands to subside." It is not improbable that the gingival irritation alone may sometimes suffice, through the channel of the trifacial nerve, to determine the reflex spasm. Again, this child-crowing is found to occur in connection with excoriations behind the ears, and with inflamed and irritable scalp ; and these complaints very frequently lead to enlargement of the absorbent glands of the neck, which enlargement may thus form an intermediate link in the chain of events. And upon some occasionV Dr. Ley has had strong reason to suspect that bronchitis, or other disease of thr 33 514 CIIILD-CROWING, OR kings, has occasioned enlargement of the bronchial glands, and so given rise to the crowing inspiration. I think that Dr. Ley has made out fair grounds for his view of the patholog}' of what is called spasmodic croup. But it is too partial and limited a view. Again, the alleged connection between child-growing and cerebral disturbance is not a mere fancy although its bearing may have been sometimes misapprehended. The cere- bral disturbance is mostlj' the consequence, and not the cause, of the impediment to the function of respiration. [We doubt the correctness of Dr. Ley's views, as well as the views of those who refer ihe disease to enlargement of the thymus gland. — For an examination of the facts connected with the pathology o( laryngismus stridulus, the reader is referred to the Editor's Treatise on the Diseases of Children, page 311, et seq. — C] The practical fact which you have to remember is, that croupy breathing may occur, and return in paroxysms, when there is no croup. And the practical lesson which you have to learn is, how to discriminate between these two similar, yet dif- ferent disorders. I have already specified the distinctive characters of cynanche trachealis. The complaint that copies it may be known by its sudden accession and its sudden departure ; by the freedom of breathing in the intervals between the pa- roxysms ; by the absence of fever, of preceding or present catarrh, of hoarseness, and of any abiding cough. The diagnosis, easily enough reached when these points are sufficiently attended to, will be still more sure, if you discover enlarged glands in the neck ; or hot, tense, and tender gums. According to Dr. Clarke, " convulsions of this description seldom, if ever, occur after the expiration of the third year of a child's life." It must be necessary for me to urge the importance of the diagnosis. Those active measures which befit the outset of the inflammatory disease, would be mis- placed and mischievous in the other. It was the result of Dr. Ley's experience that "those children have, upon the whole, a much better chance of being preserved, who are not subjected to very sev'ere discipline, than those who, in compliance with the prevailing doctrine, have been treated by very copious bleeding, large doses of calomel, and such other remedies as the supposition of the invariable dependence of the disease upon cerebral turgescence, or excitement, has suggested." Do not, however, imagine, from vvhat I have just been saying, that this disorder, child-crowing, is a trifling disorder, and unattended with danger. It is really a perilous, as well as a terrifying condition. The respiration is sometimes so long suspended that death takes place in the paroxysm. And each paroxysm is accom- panied by a tendency to stagnation and congestion of blood in the brain, lungs, and heart : a tendency which, by its frequent repetition, may lay the foundation of serious and fatal disease in one or other of those vital organs. The treatment of this affection must depend a good deal upon the nature of the predisposing and exciting causes. To go into it fully would require that I should speak of the mode of cure in painful dentition, in eruptive complaints about the head, in ceitain pulmonary and cardiac diseases, and in all those conditions which are apt to cause enlargement of the catenated or bronchial glands ; or to fret in some other way the pneumogastric nerves. In addition to the special methods of treatment which these disorders may severally need, great care must be taken, in all cases, to regulate the state of the bowels, and of the skin. Fresh air also is a powerful adjuvant ; and sometimes of itself a suffi- cient remedy. Change of place, therefore, and especially a removal from the air of a city or town to the pure atmosphere of the country, should be urged whenever it is practicable. In the paroxysm itself the warm bath might be useful, if it could be got ready in time. The application to the throat of a large sponge from which hot water has just been squeezed, is a more accessible, and often a very effecfual expedient. Sprinkling ihe face and chest freely with cold water will sometimes unlock the spasm, and set Jne little sufferer free. 1 sbouldjiave stated, that Dr. Ley's views were amply supported by the researches SPURIOUS CROUP. 515 that he had made in.to the morbid anatomy of this affection. Had he lived, I should have had it in my power to show you some very beautiful and interesting prepara- tions, illustrative of the connection of the disorder with enlarged glands, which had come to press upon, or stretch, the par vagum, or its branches. As it is, I can only show you the published engraving from some of them, appended to his book. [Spasmodic Laryngitis or False Croup is a disease bearing many of the characteristics of genuine croup, and has no doubt been frequently confounded with it. It diliers from it, however, in the absence of any tendency to the formation of false membranes in the larynx or trachea, and in being a far more manageable and less fatal disease. The attack of spasmodic laryngitis is usually preceded by slight catarrhal symptoms ; coryza, watering of the eyes, a sense of chilliness followed by flushes of heat; slight hoarse- ness and some cough. Th&se symptoms may continue for twenty-four or forty-eight hours before a paroxysm of the disease is observed. In general this occurs at night ; the child being sud- denly awoke from its sleep by a sense of impending suffocation. He starts up in a sitting posture, or throws himself forwards on his knees. He cries out that he is choking, seems anxious for air, tears off every covering from his throat, and pushes away all who sur- round or offer to assist him. The face becomes swollen and of a dark red or violet hue , the eyes projecting and humid, and the expression of the countenance extremely anxious. The inspiration is long and hissing ; and so loud as occasionally to be heard in an adjoining apartment. There is also, at intervals, a frequent hoarse cough. The voice is constrained, but seldom whispering or abolished. The pulse is quick, and the skin hot. In a short time the paroxysm ceases, and the patient falls asleep. The disease may be confined to a single paroxysm. 2More commonly, however, the child continues during the ensuing day tolerably well, excepting perViaps that he is somewhat hoarse and has an occasional short barking cough, with or without expectoration; and on the succeeding night is again attacked with a paroxysm as on the night previous. The disease may continue thus, with one or two paroxysms each night, for several days, when the paroxysms will cease to recur, and the cough and other symptoms speedily disappear. In some cases, however, the paroxysms con- tinue to recur at shorter intervals, and gradually augmenting in intensity, the patient dies from asphyxia, or, in other cases, after one or more paroxysms, he becomes affected with the utmost inquietude, with almost constant nausea and repeated vomiting, with symp- toms of great exhaustion, cold extremities, and a small frequent pulse, and soon dms. Usually, however, the disease is one very readily controlled, and has seldom a fatal um mination. Spasmodic laryngitis is very liable to recur after three, six, nine months or a year, or whenever the child is exposed to cold and damp, or during seasons marked by sudden vicissitudes of temperature. Barthez and Rilliet, by whom the term spasmodic laryngitis has been given to the disease, believe it to be dependent upon an actual but slight inflammation of the larynx. This opinion is based upon the fact that its attacks generally follow sudden exposure to cold, and by its being preceded by catafrhal symptoms, and being attended by some degree of febrile excite- ment. In connection with this mild bronchitis there occurs also a spasmodic affection of the glottis, to which they attribute the paroxysms of suffocation. That the disease is attended with some degree of laryngeal inflammation is evident from the result of post-mortem exa- minations. In the few instances in which an opportunity has been afforded for an examina tion after death, traces more or less decided of inflammation of the mucous membrane of the larynx have generally been detected — even when no traces of increased redness are pre- sent, the secretion of the membrane is usually found to be augmented, and of an opaque, yellowish or reddish colour. When, as sometimes happens, death takes place suddenly during a paroxysm, it is probably the result of asphyxia, caused by a complete spasmodic closure of the glottis. The disease usually occurs in children from ten months to eight years of age, but more frequently between two and five years. It occurs more often in boys than in girls. There is in some families a peculiar predisposition to the attacks of spasmodic laryngitis — nearly all the children becoming affected with it as they attain the age of between two and three years. Though generally sporadic, it occasionally prevails as an epidemic. Its occasional cause is almost exclusively exposure to cold and damp, or sudden alterna tions of temperature. After an attack has occurred, the paroxysms may be excited by any sudden or violent mental emotion. The prognosis in this disease is generally favourable — but when the occurrence of the paroxysms is prolonged beyond the third day, and constantly augments in intensity — espe- cially when they are succeeded by great restlessness, nausea and vomiting, when the pulse becomes soft and feeble, when a frequent suffocative cough remains, and the patient's strengtr: gradually diminishes, an unfavourable termination is to be apprehended. The disease with which spasmodic laryngitis is most liable to be confounded, is pseudo membranous or genuine croup. 516 CHILD-CROWING, OR Tlie following comparative diagnostic peculiarities, borrowed partly from M. Valleix and partly from MM. Rilliet and Barthez, will enable us very readily to distinguish the two diseases — • In Croup. In Spasmodic Laryngitis. There is fever of variable intensity — The symptoms of invasion are slight — . pseudfHnembramms angina, and slight hoarse- there are a slight catarrh, and a cough some- ness. what hoarse — the throat is unaffected — some- There is a gradual increase of the hoarse- times there are no prodroma. ness, and sooner or later a hoarse cough. The attack is sudden — usually at night. The fever does not remit; the cough be- Between the paroxysms the patient ap- comes hollow and feeble, and the voice faint pears well — the fever disappears or declines or extinct. — the voice is rarely extinct. The disease is sometimes attended with an There is an expectoration of mucus, expectoration of false membrane. The paroxysms of the disease decrease in The dyspnoea constantly increases, the violence, croupal sound continues during the parox- ysms — finally the voice and cough become extinct The proper treatment of a case of spasmodic laryngitis will depend in a great measure upon the violence of tlie attack and the age of the patient. When there are decided indications of laryngeal inflammation, and the spasmodic parox* ysms are intense and prolonged, the application of leeches to the throat, in numbers pro- portioned to the violence of the symptoms, and the age and strength of the child, will be proper. In robust children of five years and upwards, bleeding from the arm will often be productive of the best effects. In no case, however, will it be proper to draw much blood either from the arm or by leeches ; nor should the operation be repeated at short intervals, or too late in the disease — and in the milder cases the abstraction of blood will not be demanded. On the first accession of the disease it has been advised by Lehmann to apply a sponge, dipped in very hot water, and then carefully squeezed out, upon the anterior part of the neck, and leave it a moment in contact with the skin — the application being repeated at short intervals. This will produce a redness of the surface, and a general perspiration, which is to be promoted by giving some mild tepid d.iluent. By this simple procedure the paroxysm, we are told, together with all the leading symptoms of the disease may be cut short. An emetic given at the commencement of the attack, when followed by the warm bath and sinapisms to the extremities, will generally abate the violence of the paroxysm, and shorten its duration. The exhibition of an emetic, or of small nauseating doses of ipeca- cuanlia, in the intervals of the paroxysms, when considerable hoarseness of the voice, and a frequent short barking cough continue, will generally be found to remove very promptly these symptoms, and prevent tlieir recurrence. The bowels should always be attended to, and if not freely and regularly open, a dose ol calomel, followed by castor oil or magnesia, will be proper. Blisters to the neck or chest, or between the shoulders, are recommended by some writers. We have seldom seen much benefit to result from their application. When employed they should be allowed to remain on only for an hour or two ; and when removed the part occu pied by them should be covered with a soft emollient poultice. In violent cases, subsequent to depletion and the use of the warm bath, much benefit has been derived from the administration of assafcEtida, cither by the mouth or by enema, a few hours after the paroxysm has terminated. Covering the breast with an assafcetida plas- ter we have, also, found to be decidedly beneficial. Several of the German physicians recommend in the highest terms the use of musk in this disease. Wendt gave it in the dose of a grain every hour. When the paroxysm, from its length and violence, threatens the destruction of the child by asphyxia, the operation of tracheotomy should be performed without delay. During the entire continuance of the disease the child should be warmly clad, and kept 1 I a warm, well ventilated room. His diet should be light, and of easy digestion, and hi? drinks should consist of weak, lukewarm lemonade, barley or toast water. The utmost caro should be taken to preserve the patient in a state of perfect tranquillity. During the parox- ysms he should be supported in an erect position ; all covering or ligatures being removed liom about the neck. Tnere is anotner affection of not unfrequent occurrence, to which attention has been re- cently directed by Dr. Behrend of Berlin (^Journ. der Kinderkrankheiten), that has no doubt been frequently mistaken for spasmodic laryngitis. It is a spasmodic cough of a peculiar character, to which children are liable, and which occurs only during the night. SPURIOUS CROUP. 517 This affection is most generally observed in spring and winter; it, however, also frequenl/ •jfcurs during the autumn, and but rarely in summer. It is seldom, if ever, observed lu infants at the breast, but occurs at every subsequent period of cliildhood, and more fre- quently in boys tliau girls. There is no cough whatever during the day, not the slightest catarrhal symptom, and, when put to bed, the child falls into a sound quiet sleep at the usual hour. lu the course of a few minutes, however, it becomes restless, and before awak- ing, coughs violently. It now commences to cry, and the cough becomes more and more severe, until, in some cases, it produces vomiting; after one or two hours of suffering, the child again falls asleep, and passes the remainder of the night quietly. The cough returns at the same hour the following night, and continues sometimes for weeks and even months ; finally, it begins to diminish in violence, tlie fits beconu of shorter duration, and occur at a more advanced period of the night, so that the length of the sleep enjoyed previously to its coming on, is gradually prolonged : — at length the cough disappears entirely and sponta- neously. The subjects of this affection are pale, readily fatigued, and troubled with a cold- ness of the feet towards evening; they eat and play, however, as usual, and appear other- wise to enjoy good health. The nocturnal cough has frequently a catarrhal character, and is generally accompanied with a mucous rattle; sometimes, the cough is dry, croupy, and whistling : the kinks are short, isolated, and uniform, and may recur every five minutes, or extend only to one or two. This nocturnal periodic cough cannot be mistaken for genuine croup — which has well marked symptoms ; and it may be distinguished from spasmodic laryngitis by the complete intermission which follows the paroxysms, by its not being preceded by any catarrhal symp- toms, and by the entire freedom from fever throughout the attack. It may be distinguished from hooping-cough from the latter being almost always epidemic, and occurring as well during tlie day as during the night, and always accompanied with a peculiar dyspnoea. In the noc- turnal periodic cough there is no true appearance of suffocation ; the children do not awake suddenly, as in a fit of asthma or spasm of the glottis, but they awake slowly, after having coughed several times during sleep. It most nearly resembles the cough of catarrh or bron- chitis, but it is distinguished from those by the entire absence of the j)hysical signs, and by the nocturnal periodicity of the fits, which arc followed by complete remission. Dr. Behrend considers this cough to depend on an affection of the nerves, and bases this opinion chiefly on the symptoms, and on the circumstance of its having frequently appeared after an epidemic of hooping-cough, and whilst intermittent fevers were very prevalent among adults. This latter remark has been made by several physicians whose attention was drawn to this cough by Dr. Behrend. The prognosis, we are told, is always favourable. In one case the periodic cough was followed by bronchitis, but this was probably merely accidental. In another case there was repeated epistaxis. The disease, upon the whole, is generally more troublesome than serious, and demands no active treatment. Gentle purgatives, as manna with the tincture of rhubarb, given in the evening, with attention to diet and regimen, are recommended. A drachm or two of the liq. acctatis ammonite, in a little sugar, may also be given, before putting the child to bed. One physician found small doses of quinia, given at bed-time, of great service ; another found slight irritation of the skin, chiefly by means of pediluvia, and friction of the soles of the feet with roasted onions, and even enveloping the limbs, after the manner of Preissnitz, beneficial. — C] LECTURE XLVII. Diseases of the Thorax. General observations. Dyspnoea. Coitgh. Methods of exploring the physical conditions of the chest, by the senses of sight, touch and hearing. From the throat — and especially from that part of it with which we were last occupied — the transition is natural and immediate to the thorax. Now the interior of the chest is the theatre of numerous and most important morbid changes. Within that cavity are lodged two of the three organs most essential to life. The heart, lungs, and brain, have been said, by a bold figure of speech, to constitute the tripod of life : and the two former are planted in the thorax. In the same division of the body lie also the greater blood-vessels, and many other parts of scarcely less conse- quence. With respect to the heart, its alternate swinging movement cannot long 2t 5] 8 DISEASES OF THE THORAX. stop, and the patient continue to live : while three minutes' total interruption to the play of the lungs would in most cases be irremediably fatal. And lesser impedi- ments to the free working of either of these two vital organs are productive of much danger and distress ; and lead often to consecutive changes of a very serious kind, in various other portions of the body. These parts, of which the function is so indispensable, and of which the disorders are so grave and perilous, are encased in such a manner by the ribs and other boundaries of the chest, that they can neither be seen nor handled. And until i very late period in the history of medicine — until our own times, in fact — the diag- nosis of the formidable maladies that befal the viscera of the thorax was exceedingly uncertain and imperfect. Physicians were able, indeed, by the observation of indi- rect S3'mptoms, manifested through the general system — by remarking the presence of inflammatory fever, I mean — to infer that inflammation had been somewhere lighted up : and' symptoms that denoted disturbed functions of the respiratory appa- ratus — cough, difficult breathing, or local pain — might suffice to apprize them that the inflammation Avas situated in the chest. But what tissue it affected, where" was its exact place, what was its extent, or what were its physical consequences — these were points concerning which they had no means of obtaining any precise Knowledge. "Under the title of pneumonia, or pneumonic inflammation," says Cullen, "I mean to comprehend the whole of the inflammations affecting either the viscera of the thorax, or the membrane lining the interior surface of that cavity : for neither do our diagnostics serve to ascertain exactly the seat of the disease, nor does the difference in the seat of the disease exhibit any considerable variation in the state of the symptoms, nor lead to any difference in the method of cure." You will see, as we proceed, how very inaccurate this last statement would be, if it were made under our present mode of investigating these diseases. " Pneumonic inflammation (he continues), however various in its scat, seems to me to be always known and distinguished by the following symptoms : — Pyrexia, difficult'breathing, cough, and pain in some part of the thorax." I state these things to you — who do not recollect the time, as I do, when no medi- cal man in this country could, with truth and candour, say more of his knowledge of diseases of the chest than Cullen said — that you maj' the better estimate the ex- ceeding value of the discovery of what is called the method of auscultation, in the detection and discrimination of disease; and most particularly of thoracic disease. In the present day, we are able to obtain more exact information respecting the dis- orders of the parts contained within the chest, than of any other internal, and there- fore invisible parts of the body. Indeed, in a vast number of instances, we can tell, as accurately as if we saw them, the actual condition of the thoracic viscera : can follow, step by step, the successive processes of disease, or of repair, in which they are involved. We can penetrate beyond the symptoms Avhich denote deranged function, and detect and understand those much less fallible symptoms which arise from alterations of structure. And this vast addition to our pathological knowledge has been given us by the simple application of one of our five senses to the investi- gation of disease, the sense of hearing, which for so many centuries had been (strangely as it now seems) neglected, or but little used. By the assistance of the ear it has come to pass that those diseases which, besides being the most common and the most destructive, were also the most obscure, are now better understood than the diseases of any other internal part whatever. The direct symptoms which arise out of the changed conditions of the parts affected in thoracic complaints, are so mixed up with all that we know or can learn of such complaints, that what in other cases is called the morbid anatomy of disease, becomes here a part of its descriptive history. I shall not say, therefore, — as in regard to many other maladies I am obliged or I find it convenient to sa}^ — so and so are the symptoms ; and afterwards, so and so are the morbid appearances : but I shall de- scribe the morbid conditions in the outset, as the only way of rendering the symptoms which result from them intelligible. But before I enter upon the subject of auscultation, it may be useful to make a PHYSICAL SIGNS. 519 few remarks upon those symptoms of thoracic disease which were previously known, and which depend upon, or rather which express, derangement of the pulmonary functions. One of the most constant, and obvious, and distressing, and instructive of these symptoms, is embarrassed or laborious breathing : what is technically called dysp- noea. You know that by a heahhy adult, under ordinary circumstances, the act of respiration is performed, unconsciously almost, about eighteen times in a minute. There is about one act of respiration for every four beats of the heart. In various diseases this proportion is materially altered. The reciprocal movements, by means of which, in measured succession, air is drawn into and again let out of the lungs, are performed with hurry, or effort, or unusual slowness. Dyspnoea implies some deviation from the natural manner or rate of alternately expanding the thorax, and suffering it to collapse again : of inspiring and expiring : in one word, of breathing. The patient himself may, or may not, be conscious of this deviation. In most of the cases in which dyspnoea claims to be regarded as a symptom, he is conscious of it. Now, upon what does this symptom depend ? It may ultimately be referred to an altered proportion between the quantity of atmospheric air that reaches the lungs, and the quantity of blood that is sent into them, from the right side of the heart, to be converted from venous to arterial. That, doubtless, is at the bottom of almost every case of dyspnoea. Let me remind you that respiration is an automatic move- ment ; subject, nevertheless, to the occasional control of the will. The pulmonary branches of the par vagum constitute the principal and constant cxcitor,as the nerves that supply the muscles of respiration are the inotor links of the nervous chain by which the automatic movements are governed. It is believed that the presence of venous blood in the capillary vessels of the lungs forms the natural stimulus to the pulmonary part of the par vagum. In the ordinary breathing of a healthy person, this stimulus or imprt^ssion is not feU ; perhaps because, being slight and habitual, and exactly apportioned to the need of the individual, it is not attended to ; or, it is at once appeased by the admission of air, and the corresponding change in the blood. But when that change is not immediately or perfectly accomplished, then arises the distressful sensation which everybody has felt, but which our own language has no one word to express. The French call it the besoin tie respirer. The English phrase, ward of breath, denotes the peculiar sensation equally well. It calls into exercise, frequently, the voluntary power of performing the mechanical act of breath- ing — a power which is superadded to the automatic process. Various are the ways in which the natural manner and frequency of the respira- tory movement may be deranged. They were fully considered when I was on the subject of death by apncca. They all operate, ultimately, by destroying the just equilibrium between the blood and air which meet to undergo chemical changes in the lungs. We have lately been considering certain diseases in which the dilliculty and distress of breathing is often extreme. In croup and laryngitis, the only inlet for the air is narrowed at its very entrance : there is more blood passing through the lungs than can be arterialized under the ordinary motions of respiration : instinctive eflijrts take place to increase the quantity of air : to make up by more numerous acts of inspiration for the diminished amount of air introduced by each single act. For a time these compensatory efforts may suffice. But if the access of air be still impeded, blood begins to circulate through the arteries but half decarbonized, and to linoer and stagnate in the lungs : the lips become livid, and the skin grows dusky. Make, however, a free opening in the pipe that should conduct air to the lungs, and the balance being restored between the blood in those organs and the air that reaches them, the dyspna-a is soon at an end. The quantity of blood being the same tlien, but the air inspired too little, there will be dyspnoea. The very same thing occurs whenever a portion of lung, from being spongy, is rapidly rendered solid. No ai; can then penetrate it, nor perhaps any blood; but the same quantity of olood ai before arrives at the right side of the heart, and is transmitted thence through the pulmonary artery ; and consequently those portions of the lungs which are pervious M blood and air, are supplied with blood in excess, and require air in excess: i. e.i dyspnoea i& necessitated. And you will perceive that similar consequences nay 520 ' DISEASES OF THE THORAX. arise from any pressure made upon the lung, obliterating in a certain degree its cel- lular structure ; as b}' fluid collected in the pleura ; by enlargement of the heart ; by aneurism of the great vessels ; by tXjmours, of whatever kind, within the chest ; or jy pressure upwards against the diaphragm by reason of a distended abdomen, whe- ther the distension be occasioned by disease, such as ascites, or by obesit}', or by a , full stomach, or by a gravid uterus. A like disproportion will ensue, if the free expansion of the thorpcic cavitj' be prevented by pain, b}' disease or rigidity of its boundaries, or by palsy of its muscles through interruption of the nervous circle whereon their contractions depend. But on the other hand the balance may be destroyed from the opposite quarter: the air admitted during a single ordinary inspiration being the same, the quantity of blood requiring to be converted from purple to scarlet may be augmented ; and in that case also, in order to maintain the due equilibrium, more numerous acts of respiration must be performed : in other words, d3-spncea will arise. This is the case under brisk exercise : the pressure of the muscles upon the veins propels their contents with greater velocity towards the right side of the heart ; the heart contracts more frequently in proportion as it is more rapidly filled with blood; a greater quan- tity than usual is sent through the pulmonary artery to the lungs ; and the individual breathes more quickly, to supplj' this augmented quantity of blood with air : he is out of breath, in a state of dyspncea. But this is not disease. Disease, however, will often have the same effect. The quickened circulation in fevers, any obstacle to the free passage of the blood from the heart into the arteries, will tend to gorge the lungs with blood, to destroy the requisite equilibrium between the air and the blood in those organs, and so give rise to dyspntsa. Other conditions still may be mentioned, as predisposing to hurry of the breathing — a peculiar state of the nervous system ; certain qualities of the blood ; — but I need not dwell on these at present. There are two important corollaries derivable from what I have now been statinor. In the first place, you must perceive how intimately the functions of the heart and lungs are dependent upon each other; and that disease originating in either of these vital organs may readily be the cause of consecutive disease in the other. We shall have many examples of this before us as we proceed. It would afford materials for an interesting essay, this mutual relation between cardiac and pulmonary disease. At present I merely glance at it in passing. In the second place, what I have said of dyspnoea must have sufficed to show you that, taken by itself, it has not much value as a diagnostic symptom. All that it tells us is, that the healthy and natural relation between the quantities of blood and of air in the lungs is disturbed : but to determine the cause of that disturbance — to decide whether the heart be in fault, or the lungs, or both, or neither — we must have recourse to other sources of information. Cough is another of the symptoms, mentioned by Cullen, as denoting disordered function of the breathing apparatus. I need scarcely tell you that it is produced by closing the glottis, and then making a sudden and strong expiration. Its purpose is the disiodgement of mucus which may have collected in excess in the air-passages, or of any other source of irritation to the membrane lining those parts. To be effectual it requires the admission of a certain quantity of air, and the possession of a certain degree of muscular strength. I pointed out to you, in the last lecture, a remarkable exemplification of this : the boy whose case is described by Mr. Chevalier in the Medico-CJdrurgical Transactions, was dying of croup; was on the brink of being suffocated by the collection of mucus in his wind-pipe and bronchi, which mucus he was unable to expel: and he was unable, not from defect of muscular strength, but because he could not sufficiently inflate his lungs beyond \he collected mucus. When an ample opening was made in his trachea, he drew in a strong breath, and coughed the mucus up through the rhna gtotlidis. In old and feeble persons labouring under chronic bronchitis with profuse secretion from the mucous surface, strength is often wanting to cough the phlegm up ; and they die suffocated. But the sensation which prompts to the acts of coughing may arise from various ;jth'r causes besides the accumulation of mucus in the air-passages. Any slight PHYSICAL SIGNS. 521 f , 1. . irritation about the glottis ; a long, trailing and tickling uvula ,* the inspiration of irritating vapours; pressure of any kind upon the respiratory organs ; may any of them produce cough. Nay, it sometimes is provoked by sympathy with other parts ; an instance of which we have in what is cfJled a stomach-cough. Some morbid condition, some irritation of the stomach exists, which being appeased, the cough ceases. You will recollect the name and the functions of the pneumo gastric nerves. We have, in the fact just mentioned, another example, in addition to those which I glanced at in a former lecture, of irritation of the sentient extremities of one branch of a nerve, declaring itself by uneasy sensations referred to other branches of the same nerve. For these reasons, therefore, cough is not more diagnostic of particular diseases situated in the thorax, than is dyspncea. There are, indeed, certain varieties of cough, as there are certain modifications of the breathing, from which we may obtain very useful information even in respect to the nature and seat of some diseases: and these varieties and modifications I will point out as I go along. Let me admbnish you, also, before we come to auscultation, not to fall into an error which has been too common : that of trusting entirely to the ear in the investi- gation of thoracic disease, to the exclusion or neglect of those phenomena which are perceptible by the eye, or by the hand ; or of those indirect revelations which are furnished by the condition of other parts and functions, or by the previous history of the patient. Even before the discoveries of Avenbrugger and Laennec, physicians were too remiss (if we may judge from their writings) in what may be called the mechanical exploration and notice of the actions of respiration. A good deal may be learned, sometimes, by merely placing one's hand upon the chest, or belly, as I shall explain more particularly by and by : and a great deal, also, may be made out, in some cases, by the simple inspection of those parts, when they are uncovered. You may see, for example, that the ribs, in respiration, scarcely move at all, while the belly rises and falls alternately with the descent and ascent of the diaphragm. This is called abdominal respiration. It may arise from a painful condition of the intercostal niuscles, or of the plurse, rendering the patient unwilling to elevate his ribs ; or it may arise from disease of the spinal cord, between the origins of the phrenic nerve and of the intercostal nerves, rendering the patient unable to raise them ; or the same inability may result from disease of the lungs themselves. The symptom may guide us at once to the seat of the malady. Again, the breathing may be entirely thoracic, no motion of the abdomen taking place ; and this may de- pend upon an affection of the diaphragm, or of the pleura which is reflected over it ; or upon disease, accompanied with tenderness, within the abdomen — upon perito- nitis, for example ; or upon mere distension of the abdomen. Or by looking at the naked chest, you may see that one side of it moves, and that the other moves less, or does not move at all : and the motionless side may be of the natural size as com- pared with the other, or it may be flattened and contracted, or it may be round and bulging; and most important conclusions, and most important indications of treat- ment, will flow from a knowledge of these circumstances. The general form of the chest is also instructive. Never neglect, then, to examine the thorax, in cases where it is supposable that the disease may be seated in that part of the body, by your et/e, as well as by your ear. The eye needs but httle training to enable it to perceive and comprehend those signs which are within its sphere : the ear, unfortunately, requires to be carefully educated. I will just remark, further, that in the case of females, no indelicate exposure of the person need be made. In most instances the morbid conditions I have been adverting to may be recognized through a thin lineu covering. Auscultation signifies the investigation of internal diseases through the sense of hearing: and it is especially applicable, for reasons which I either have stated or will state, to the study of thoracic diseases. In its full meaning it includes all that we learn by listening to a cough, and all that we gather by striking the chest, and attending to the resulting sound. But in general, the term percussion is used to express this last mode of eliciting information, although the information is conveyed through the medium of the ear: and the word auscultation is applied to the art of distinguishing diseases by listening to internal sounds, by "^leans of the ear piaced 2x3 T ^ 522 DISEASES OF THE THORAX. in apposition with the surface of the body ; or by means of some conductor of sound interposed between the ear of the listener and the person of the patient. In the first of these two modes the auscultation is said to be immediate; in the second, ??je(/m/e. By percussion we ascertain the degree of resonance, or want of resonance, of the part struck : by auscultation we learn the qualities and modifications of the voice, as reflected through the chest; and of the breathing; and of the sounds of the heart. The invention of the method of percussion we owe to a C4erman, Avenbrugger, who wrote an excellent treatise upon it, which was brought into notice by Corvisart, who translated it. For the more brilliant discovery of auscultation we are indebted, as every body knows, to Laennec. Now it will save us much trouble, and conduce, I hope, to your future progress as practical auscultators, if, before I speak of any of the diseases of the chest, I pre- mise some general observations respecting these modern methods of examining the human body, with the view of detecting and discriminating its diseases. Indeed, I could not make myself intelligible unless I did so. And first, with respect to percussion, which you will please to recollect is nothing else than auscultation of, or listening to, sounds which we ourselves artificially and purposely produce. You know, every child knows, by daily experience, that difl^erent substances, when struck, give out very different modifications of sound. If you strike a drum, you get one kind of sound ; if you strike a brick wall, you get another. The one is loud, trembling as it were, and prolonged ; the other dull, short, and flat. But why should I attempt to describe in words things which are familiar to you already? Bodies that are solid, or inelastic, give the dull flat sound in proportion to their solid thickness, or their want of elasticity. On the other hand, hollow vessels, i. e„ ves- sels containing air, with thin, firm, elastic boundaries, give out a sound more or less approaching in its qualities to that of a drum. : the sound is called a hollow sound from that circumstance. If you have a wooden cask containing air only, it is resonant when struck : fill it half full of water, and the lower part will render a flat sound, the upper empty portion a hollow sound ; less hollow, however, than when the vessel contained no water; fill it up with water, and the whole is dull on percussion; pour out the water, and fill it loosely with wool — it will still be resonant, though in a different and less clear note than when it held air alone. Now this experiment may be transferred to the human chest, which is a cavity, bounded by firm, thin, tense, and elastic walls, and containing, in its natural state, the spongy lungs, which are full of air ; and other parts that are solid, whereof the heart is the chief. If you strike the surface of the chest (it requires a little knack to do it properly), and if the blow falls over a portion of healthy lung, you Avill produce a resonant or hollow sound. If the lung be not there, if it be pushed aside, and its place supplied by some more solid or inelastic substance, by fluid for example, you will hear a dead sound. So you will if the lung be there, but has lost its spongy character, is void of air, and somehow or other solidified. But you may have a resonant sound, though the lung is in a state of disease ; nay though the lung is not there : so that percussion alone cannot always be depended upon. I shall tell you, hereafter, how to guard against being misled by it in such cases. Again, if you strike over the region of the heart, you will get a positively dull sound, or at any rate a much duller sound than in most other parts of the chest. It is really a singular thing, that this method of searching for indications of disease, and of health, should have been so long neglected or overlooked in .'»ur profession. I am sure that I had a practical acquaintance with the princijile of percussion long before I knew any thing of physic; and so, I make no doubt, have most of you. ■Vlany a time, when wishing to know whereabouts I might drive a nail firmly into a wall, I have tried with the hammer to find which was brickwork, and which was wooden joist; and percussion is an art in daily use for similar purposes, with car- penters and bricklayers. Yet it does not appear to have been thought of by physi- cians till the middle of the last century, when Avenbrugger, after studying' its results for seven years, as he tells us inter tcedia et laborc.s, published at Vienna his " In- ventum novum, ex percussione thoracis humani, ut signo, abstrusos interni pectoris t PHYS CAL SIGNS. 523 morbos detegendi." This ivas almost totallj' neglected however, until, as I stated before, Corvisart's work on diseases of the heart brought it into general notice. Avenbrugger and Corvisart, and indeed every body who used percussion at all, until a very few years ago, employed direct percussion : that is, they struck the chest with the extremities of the fingers. More recently, mediate percussion has been introduced into practice, by JM. Piorry. In mediate percussion some solid substance is placed upon the spot, the resonance of which is about to be explored, and the blow is made upon that substance, which is called a pleximeter — a stroke-measurer. A round thin plate of ivory, laid flat upon the surface, is the most common sort of pleximeter ; or metal, or wood, or leather, or India rubber, may be employed. Many persons, and I am one of them, use no other pleximeter than the fingers of the left hand. I shall explain, as briefly as T can, the method of employing percussion, and the cautions requisite to render it an effectual and a true interpreter of the state of the parts beneath the stricken surface. The position of the patient is of some consequence. It should be one that is con- venient to the examiner, and not inconvenient to himself; and it should be one calculated to render the part struck as firm and tense as possible. 1 he best position of all is a sitting position, on a firm chair. But you may percuss a patient very effectually as he siis up in bed, or while he stands, or some parts even when he is lying down. A good deal is said, — more, in my opinion, than is necessary, — about the effect of curtains, and so forth, in deadening the sound. I do not believe they will ever interfere with your conclusions, especially as we learn more from com- paring the sounds given out upon percussing the corresponding parts of the opposite sides of the chest, than from the absolute resonance or want of resonance of any single part. But there are some exceptions to this ; and if your patient can be made to sit on a chair in the middle of the room, so much the better. Then, if you are about to percuss the front of his chest, make him hook his arms over the corners of the back of the chair, and throw his head back. If you des.re to explore in this way the lateral portion of the thorax, he must place the hand of that side upon his head, and lean a hltle to the opposite side. If you would know how the posterior part of the chest sounds, he must lean forwards, fold his arms across his breast, and bend down his head. Next as to the mode of percussing. For direct percussion, the ends of the fingers of the right hand should be brought together, and into a line with each oiher, so that no one of them may project beyond the rest ; and care should be taken, first, to compare the sound produced by striking any part of the chest on one side, with that produced by striking the corresponding part on the other side. It follows from this rule that we should not examine all the points on one side before passing to the other, because we should thus lose the remembrance of, and the power of accurately com- paring, the sounds obtained from corresponding points. It is best to strike first on one side of the body, and then on the corresponding spot of the other. It follows also that we are not to compare the result of percussion on one of the I'ibs, with the result of percussion on one of the intercostal spaces. The blow should fall upon the rib, and parallel to it. A second point requiring attention, is the state of the chest in respect to the act of breathing. If one side be percussed after the movement of inspiration, and the other after that of expiration, some little difference in the resulting sounds will be manifest, even in the healthy condition of the thorax. And this might mislead. Let corresponding spots on the two sides be therefore both struck, either while the chest is expanded, or while it is collapsed, or while the patient holds his breath. Thirdly, you must take care to strike the corresponding parts at the same angle, and not with the fingers perpendicular to the surface on one side, and inclined obliquely to it on the other: also to strike corresponding parts with the same degreu of force. And the blow should not be hard enough to give the patient pain ; indeed such a blow would not produce a good sound, it should be smart and quick ; the ends of the fingers should not remain on the chest. Under some circumstances, however, the patient cannot bear to be percussed at all. T '■^ 524 DISEASES OF THE THORAX. The latter cautions are most necessary when direct percussion is employed ; over which mediate percussion has, however, many advantages. Some of these are ob- vious. In the first place, the space examined by mediate percussion is very exactly defined and limited. Secondly, you may strike the pleximeter much more forcibly than you could strike the unprotected body, and so produce a more decided sound. Even when the surface is morbidly sensible, or the patient unusually irritable, so that percussion in the ordinary way cannot be performed at all, it may generally be done through the pleximeter. A third and very great advantage is, that mediate percussion is available when made over certain parts where, even although there may be no pain occasioned by i', ordinary immediate percussion is attended with no useful result. Parts, I mean, where there is much fat, and parts which are fleshy, or oedematous. If the pleximeter be pressed firmly upon these parts, even upon the mamma in females, the hollow sound is attainable ; whereas, if they were struck by the fingers, the sound would be perfectly dull. Mediate percussion may be apphed also, with effect, through the clothes. I say that a convenient way, and one which I find quite sufficient, of employing mediate percussion, is by making a pleximeter of the finger or fingers, of the left hand ; taking care that they are closely in contact with the subjacent parts, and si77ii- larly applied to corresponding spots ; and that the backs of the fingers be outwards. Piorry declares, indeed, that the resonance produced by this mode is scarcely one- tenth part so great as that elicited by using a thin, solid and elastic plate. For all practical purposes, however, I am certain that the finger, as it is the readiest, so also it is a very satisfactory and sufficient pleximeter. It has, moreover, this positive advantage, that the sound made by striking it is not loud, and does not obscure or interfere with that which depends upon the condition of the chest. Ft is right that you should be aware of differences of sound which belong to the individual. Cseteris paribus, the sound given out on percussion is more resonant during inspiration than during expiration ; in childhood and youth than in middle age : in middle age than in old age ; in females than in males ; in thin persons than in fat : and, they say, in nervous, irritable people, than in those of a contrary tem- perament. And it is still more necessary that you should be aware of differences of sound given out in health, by different parts of the surface of the thorax, in the same indi- vidua!. And in order to explain this more distinctly, and for the sake of refc' nee hereafter, let me here exhibit to you the regions of the thorax, as they havr !'een artificially mapped out for the purposes of auscultation. It is unnecessary for me to describe particularly the method followed in this arbi- trary division of the thorax into regions. I will state the names that have been com- monly applied to them, and the sounds which in health they respectively yield, ac- cording to their number in the diagram before you. T\\c first region is that of the clavicles ; one, of course, on each side. Upon these bones it is immaterial whether direct or mediate percussion be made. The sound given out should be very clear at their sternal extremities, dull at their humeral ex- tremities, and clear at their middles. The resonance diminishes from the sternal towards the acromial end of the clavicle. These parts correspond to the summits of the lungs. The second region is the stibclavian. It lies between the clavicle and the fourth rib on each side. Beneath this superficial region hes the upper lobe of the lung; and towards the sternum large bronchi are situated. You will understand, there- fore, that the sound educed by striking this part ought to be very clear, A little lower down, number three, is the 'mammary region, extending from the fourth to the seventh rib on each side, and answering to the middle lobe of the lungs. Here also the resonance afforded by percussion is clear; but in the lower part of this region, on the left side, we find the heart, which is more or less covered by lung: and on the right side the liver begins to mount. The sound is somewhat modified and deadened by these deeper-seated viscera. In women we can deter- mine the degree of resonance of this region through the mammae, by mediate per cussion only. PHYSICAL SIGNS. 525 The fourth is the infra-mammary region. It comprehends that part of the bony compages of the thorax on each side, which Hes between the seventh rib and the edge of the cartilages of the false nbs. Into this region, on either side, may descend the thin anterior margins of the lower lobes of the lungs ; but in the same region, on the right side, lies the liver, over which the sound of percussion is dull ; and on the left side is placed the stomach. Hence, when the stomach is tympanitic, a preter- naturally resonant sound will proceed from this part ; and when the stomach con- tains no gas, the sound will be irregularly dull. All the regions hitherto described are double. There is still the mesial part of the front of the chest to be subdivided, and we may call the three regions there situ- ated, and numbered 5, 6, 7, the upper sternal region, the middle sternal, and the lower sternal. In all these the sound on percussion ought to be clear, except, per- haps, in the inferior portion of the last, which may be rather dull, or which, from its vicinity to the stomach, may be tympanitic. The eighth region is the axillary ; the axilla above the fourth rib on each side. The ninth is the lateral region, between the fourth and seventh ribs. In both these regions the resonance should be distinct and clear. The tenth, which may be called the lower lateral region, below the seventh rib at the sides, gives the same sounds as the infra-mammary, namely, on the right side a dull sound, on the left a sound which at times is preternaturally hollow : on account of the presence of the hver in the former case, and of the stomach in the latter. But we have yet to look at the hind part of the thorax. Here we have the space (region eleven) which forms the top of the shoulder, and lies between the clavicle in front, and the superior spine of the scapula behind ; the acromial region. Very little can be made out by percussion in this spot ; the sound is dull. But the depres- sion immediately above the scapula, the supra-spinal fossa, as it is called, is a space which affords valuable information to the ear applied over it. The twelfth region is the scapular. It comprises the part covered by the scapula on either side. It corresponds to the posterior part of the middle lobe of the lungs, but yields a dead sound, unless a pleximeter be used. The thirteenth region is the intra-scapular. It lies between the inner edge ot the scapula and the spine on each side. It corresponds to the roots of the lungs, and to the middle parts of their lower lobes. You may get a good clear sound here, if the patient's arms be crossed, and his head bent forwards, and his back arched, 60 as to stretch and tighten, and make as thin as possible, the superincumbent muscles ; you will find also that the ridge of the spinal column in this part gives a hollow sound. 526 DISEASES OF THE THORAX. The last region to be mentioned, number /owr/ecn, the (Zorsa/, is the loweiinost part of the ribs behind. It answers to the base of the lungs, and gives a clear sound* but the liver on the right side is apt to render its inferior portion dull ; and the stomach on the left to make it undulj' resonant. Now, knowmg these circumstances, if you find that a dull sound is yielded on percussing a part that should render a hollow sound, you conclude that beneath the pan struck there is not the natural quantity of air. But whether this arises from consolidation of the lung itself, and the obhteration of its cells, or from fluid effused into the cavity of the pleura, you cannot, by mere percussion, determine. So, again, f the sound be unnaturally tympanitic, you cannot say whether that results from what is called pneumothonLx, or from emphysema of the lung. Percussion testifies that air is there ; but further this deponent sayeth not. The information which the exercise of percussion may leave thus imperfect, aus- cultation of the sounds produced by the acts of breathing, speaking, or coughing, vn]\ in most cases supply. If the ear be laid close to the surface of a healthy thorax (or if the instrument called the stethoscope be interposed between that surface and the ear), the ear will hear the air enter and fill the lungs, and then withdraw and leave them again, in perpetual succession. The sound produced by this ingress and egress of air has been called the respiratory 77nirinur. I might tell you that this sound, to my mind, is rather a rustle than a murmur ; that it is hke the sighing of the wind in the branches of a tree. I might say, with Laennec, that it resembles the sound made in the deep inspiration of a sleeping person ; or, with Dr. Davies, that it reminds one of the soft murmur of a pair of bellows, of which the valve does not click. But one minute's appliance of your ear to the subclavian region in a child, or even in an adult, will give you a clearer notion of the nature and character of this sound than any verbal description could convey. Yet, respecting this natural respiratory murmur, there are some things of which it is desirable that you should be previously informed. In the first place, the entrance of the air is much more noisy than the exit: which, sometimes can scarcely be heard. You will see, by and by, the importance of noticing this fact. In the next place, the murmur of respiration is not equally audible in all persons. It may differ much in intensity, though not in kind, in two persons, each of whom is in perfect health. Thus it is much more loud and distinct in children than in grown persons. So remarkably is this the case, that when we meet with an unusually noisy respiratory murmur in an adult, we say that his breathing is puerile ; it has the cha- racter of the respiration of a child. Now, I tell you before hand, that puerile respi- ration in the lung of an adult is generally a sign of disease ; and it is mostly partial ; heard in certain parts only of the chest. Again, ca^teris paribus, the natural murmur of respiration is more clearly audible in lean and spare persons than in such as are muscular and fat. Fat and muscle are bad conductors of sound, and act as dampers. Listening to the breathing through a thick layer of adipous tissue, is like hstening (as Dr. Latham says) to the respira- tion of a person through his clothes. But if you take two healthy men who are alike in respect to leaness and fatness, you may often find that the respiratory murmur is very loud in the one, and very feeble, or almost inaudible, in the other : but in this last it becomes audible when he 'akes a deep and forced inspiration. The reason of this difference is not very well understood. The breathing may be very indistinct, though the thorax be capacious, and well formed, and'heaUhy. Some persons seem to require less effort than others to maintain the due equilibrium between the air in the lungs, and the blood in the lungs : as if they had not only pulmonary space enough, but to spare. So that the difference in the manner of breathing, and in the sound occasioned by the passage of the air in and out, depends, m all probability, upon individual pecuharities of the circulation. At any rate, it is Tery important that you should be aware of the existence of these differences. But the sounds which reach the ear applied to the chest of a breathing person will PHYSICAL SIGNS. 527 differ in different parts, and under different circumstances. The sound given out by rtie air as it passes through the trachea and larger bronchi, differs from that which results from its passage into and out of the smaller bronchi and air-passages. I am anxious not to refine too much in these matters : and, therefore, I pass by mmuter points of diff(?rence. Place the stethoscope over the trachea, and you will hear just such a sound as you might expect to hear: the sound of air rushing tluough a tube of considerable size, a blowing noise. We will call that sound, which you will re- cognize again when you have once heard it, bronchial breathing. It accompanies the outward as well as the inward passage of the breath. Again, place your ear or your stethoscope upon the right mammary region ; there you shall hear that rust- ling sound, which I propose to call vesicular breathing, and which is chiefly audible during inspiration. We shall find these distinctions of much use in the discrimina- tion of disease. We shall find, for example, that the breathing sometimes is bron- chial, where it ought to be vesicular. . Now if any part of the chest where we should hear breathing, we can hear none, this may result from solidification of the subjacent portion of lung; or from some obstacle in a large bronchus, preventing the air from entering that part ; or from air being in any way shut up and stagnant in that part ; or from an effusion of liquid into the pleura at that part. And here again percussion comes into play, and de- termines for us which of these possible circumstances is the one really present. If the part when struck emits a hollow sound, there is stagnant air beneath it, either in the heakhy lung, or in the lung altered by disease, or in the cavity of the pleura. If a flat solid sound be given out, there is sohd lung beneath, or liquid in the pleura, between the ear and the lung. All these points, and the conclusions to be deduced from them, will become clear to you, I trust, as we proceed. iVIinuter analysis of the diagnostic signs would be premature. A word or two preliminary I must say about the voice. The voice passes outwardly through the mouth and nostrils into the surroundino" air; it passes also inwardly through the trachea and bronchi into the lungs, and it may be heard through the lungs, by the ear laid flat against the chest. Bui it gives quite a different sensation to the ear in different places. If you place the stethoscope on the trachea, the voice will articulate itself into your ear as if it came from and through the instrument. This sound, which is natural here, would be unnatural, and a mark of disease, if heard beneath the clavicles. When heard beyond its natural situation, it is called pectoriloquy. A less degree of this, a sound like that of a person talking into a tube, and whose words, for that reason, are muffled and indis- tinct, is called bronchial voice, or bronchophony. When to this modification of the voice there is added a twanging vibration, a cracked discordant tremor, resembling the squeak of Punchinello, or (as some think) the bleating of a goat, oegophony is said to exist. All these unnatural modifications of the voice are indicative of most important changes within the thorax. I merely introduce them to you now: you will become better acquainted with them in due time. What is true of the natural voice, is true, mutatis mutandis, of that unnatural vocal sound, cough. The cough may be so modified by the condition of the internal parts, as to reveal that condition. There are yet other ways in which some information can be gathered respecting the interior of the chest. If you give certain patients a sudden smart jog while your ear is applied to their thorax, you may hear a splashing sound, like that produced by shaking a barrel or a bottle partly full of water. From this expedient you in fact determine that the cavity of the pleura, or perhaps a large excavation in the lung, does contain both air and a liquid. This is called the method of succussio7i. It was employed long before the other forms of auscultation were thought of. Hippocrates mentions it. Again (but that is not auscultation), you may sometimes collect useful information respecting the state of the chest by simply laying your open hand upon it. In most persons there is a distinct vibration or thrill produced by their speaking, which thril' 528 CATARRH. — BRONCHITIS. is very sensiblj' felt by the hand. Now, this thrill may be felt on one side of the chest, and not on the other. And such a difference is an unequivocal sign of disease. The positions which I described before as being the most convenient for the per- 'brmance of percussion, are the most convenient also for the purposes of auscultation. You may listen with the unassisted ear, or you may listen through the stethoscope. This, as you know, is a soUd or perforated piece of wood, of which one end is adapted to the ear ; and the other, which is to be applied to the chest, is hollowed out, or expanded, into the shape of a bell, or funnel. The object of the instrument is to collect and convey to the ear of the observer the vibrating impulse of the air, or of the solid walls of the thorax, occasioned by the motions within. The stethoscope is sometimes useful for examining a circumscribed spot in the thoracic cavity. With it we o-aujie, more nicely than we could do with the naked ear, the signs furnished by the patient's voice. We must use it also when we would investigate the breath- ing in parts to which the ear itself cannot easily be applied ; and in cases where, from the filth of the patient, or because he has some infectious disorder, we desire tc avoid any immediate contact with his clothes or person ; and in cases of young or old ladies, to whose breasts it might not be seemly or delicate to be putting our faces. But, with these exceptions, the stethoscope, in my experience, is rather a hindrance than a help. Much, however, depends upon custom. I can best distinguish most of the sounds to be heard within the thorax by my unassisted — perhaps I should say my unimpeded — ear; and I therefore employ the stethoscope or cyhnder in such cases only as I have just adverted to. I cannot do without the instrument ; but I do without it as much as 1 can. Care should be taken that the end of the stethoscope next to the ear be closely and comfortably fitted to that organ ; and that its other extremity be blunt, so as not to hurt the patient; and further, that it be uniformly and evenly applied to the surface of his chest. If these precautions be attended, to, the shape and fashion of the instrument are very unimportant. LECTURE XLVIII. Catarrh ; its Varieties. Jicute Bronchitis. Dry Sounds attending the Respira- tion ; Ehonchvs, and Sibilus ; Moist Sounds; Large and Small Crepitation; how these are produced, and what they denote. Treatment of Jlcute Bronchitis. Peripneumonia Notha. Sudden Infraction of a large Bronchus. In the last lecture I described to you, in a general manner, the method of ausculta- tion, or the employment of the sense of hearing in the investigation of disease ; and particularly of thoracic disease. I explained, as Avell as I could, the different sounds which result from percussing various parts of the chest ; and from the entrance and exit of air during the several acts of breathing, speaking, and coughing. I men- tioned certain conditions in which those natural sounds are abolished; but I did not speak, except incidentally and very cursorily, of the altered and new sounds to which the presence of disease within the thorax has been found to give rise. Nor do I propose to enter now upon any formal account of these morbid sounds. I shall endeavour to make you acquainted with their characters, and causes, and significa- tion, as they arise in the progress of the separate thoracic diseases which I am about to consider. Before you can possibly appreciate the morbid sounds, you must make yourselves familiar with the natural and healthy. You must have a standard, by which you may measure the numerous deviations from the natural sound that will meet your ear in disease. Listen to the voice and the breathing of healthy children, or of some of your friends and fellow-students ; and you will soon recognise those respiratory sounds which accompany the perfect state and working of the breath-machine. PHYSICAL SIGNS. 529 I intend to commence with those diseases of the lungs in which the imicous 7nem- hrane lining the air-passages is primarily or principally involved. This membrane is often affected alone. It is much exposed to known causes of disease : to alterna- tions of temperature in the air which is constantly passing over it ; to the irritation produced by acrid or noxious matters, solid or gaseous, which are mixed and inhaled with the air. And when disease commences in other parts of the lungs, it seldom fails to reach, sooner or later, the mucous membrane. In diseases also of the heart, the same mucous membrane is very liable to be consecutively affected, by reason of those alterations in the condition of its capillary vessels which the disorder of the circulation produces. Now I shall first point out the changes to which this mucous membrane is liable ; and then describe the modifications of the natural sounds that result from such changes ; and, lastly, consider the different forms of disease which these changes constitute, and these altered sounds denote. In a former part of the course, I gave you some account of the peculiarities which differences of texture impress upon the phenomena and process of inflammation ; and, among the rest, I spoke of the behaviour of the mucous tissue when inflamed. The mucous membranes, in the state of health, are perpetually moist. The exhalation of this moisture, to a certain amount, and not berjond a certain amount, jonstitutes an essential part of their healthy functions. Now, their biflam,mation (for I am atout to consider first the inflammatory affections of the membrane of the nir-passages ; some of them indeed I have already discussed), I say the inflammation of these mucous surfaces alters their ordinary secretion. An inflamed mucous mem- brane is in the first instance dry ; its secretion is suspended. But this is not the only change that takes place in it; it becomes tumid also, swollen, thicker than before; it is redder than natural, and its sensibility undergoes a perceptible modifi- cation. Pain, in mucous membranes, is 7iot a common phenomenon ; for their text- ure enables them to expand or dilate freely, so that they escape much tension, and the pain which is produced by tension ; but their natural sensations are blunted, and new and uneasy sensations arise in them: sensations of heat, fullness, itching. It happens that we can see a portion of the mucous membrane that belongs to the air- passages ; and by noticing the changes produced in it by inflammation, we infer those which are apt to take place in the parts we cannot see. We have all often experienced in our own persons an inflammatory state of the membrane lining the nasal cavities ; the Schneiderian membrane. At first the nostril is preternaturally dry ; yet, though it is dry, you cannot breathe through it : it is stuffed up, not with accumulated mucus, but by the mere swelling of the membrane : the sense of smell is perverted or lost ; the part is evidently red ; it is tender, also, and irritable ; the contact of atmospheric air a little colder or a little less pure than common, provokes sneezing. The affection extends often into the frontal sinuses, and headach and oppression ensue ; or it passes into and through the lachrymal sac, the conjunctiva participates in the inflammation, the puncta lachrymalia become impervious, and the tears flow over the cheek. And with all this there is sometimes shivering or chilli- ness ; and the pulse, especially in ihe evening, becomes a little more frequent than common. There is slight fever. After the unusual dryness, the membrane begins to secrete a thin serous fluid, having acrid properties ; for it reddens and frets the al?e nasi and upper lip, over which it flows. By degrees this thin serous fluid be- comes thicker, and as it becomes thicker it becomes less irritating also, more viscid, opaque and yellow: the swelling of the membrane diminishes; it is less raw and sensitive: at length the secretion resumes its natural ^'Urt/tVy, and is reduced to its natural cpumtilii again ; and the tumefaction of the membrane entirely disappears. This i-s the course of what is properly called a cold in the head. When the defiuxiou from the nasal membrane is considerable, systematic writers call the complaint cory- za ; when it is attended with much pain and weight about the frontal sinuses, it is named gravedo. It is a variety of catarrh. Iri catarrh, sometimes one part, and sometimes the whole, of the mucous membrane of the air-passages suff'ers inflamma- tion. If the disorder goes down into the lungs, it is said to be a cold in the chest : jX, from one of the most prominent of its symptoms, a cough; in medical language, iU 2 u 530 CATARRH. — BRONCHITIS. broncliilis. It sometimes travels from one part of the membrane tc another. Be ginning, for example, in the nose, it oradually creeps down into the windpipe and lun^^s. Sometimes the inflammatory condition passes from the throat into the Eusta ch.un tubes, and produces deafness ; or down the gullet and to the stomach, causing qualmish or other uneasy sensations, and loss of appetite. And occasionally this order appears to be reversed. There are some persons who will tell you that when- ever anything disagrees with their stomachs, whenever dyspepsia is produced by some error in diet, they are sure to have catarrh. Now I have adverted to this cold in the head, or coryza, because the phenomena which are open to our inspection in the Schneiderian membrane take place also, no doubt, in the bronchial. The membrane is first dry, and tumid, and irritable; fhe uneasy sensations of which it is the seat prompt to the action of coughing. The chest feels tight, stuffed, constricted. There is some hoarseness, and a sense of roughness and soreness in the windpipe ; and a dry cough, which seems to arise from some irritation about the glottis. Sometimes, with these symptoms, pains in the limbs, like the pains of rheumatism, occur; the appetite is impaired ; the patient IS thirsty ; and a general lassitude is felt all over the bod)'. But what effect has the altered state of the membrane upon the sounds elicited by percussion; or heard within the chest, by the ear, during respiration? AVhy it brino;s us acquainted at once with two remarkable modifications of the natural sound of breathing; and these I must describe and explain. I will take this opportunity of again recommending you to read and study the httle book of lectures recently published by Dr. Latham. It contains a very plain and clear account of the auscultatory signs of disease Avithint he chest ; and he speaks of these signs in more easy and popular language, with less of over-refinement, and a less subservient adoption of the French mode of thinking and writing on these subjects, than any other English author that I know of. I recommend his little volume the rather also, because he uses the nomenclature which is the most familiar to myself: in fact, as we some years ago saw and talked of these matters together in the wards of St. Bartholomew's, we were likely to employ the same terms. When you listen, I repeat, to the breathing of a healthy person, you hear, as the breath goes in and out, but especially as it goes in, a smooth and gentle rustle — the respiratory murmur, or the vesicular breathing. But when the inner surface of the bronchial tubes, and of their ramifications, is preternatural ly dry, and tumid, this sound is altered : you hear a hissing, or wheezing, or whistling, as the breath goes in and out ; and this is technically called sibilus : or you hear a deeper note, a snoring noise, as I he patient inspires or expires — a sound like the cooing of a pigeon, or the bass no'.e of a violin, or the droning hum of an insect in its flight ; and this is called rhonchus. These two, in their various modifications, constitute the dry sounds of respiration ; and it will be worth while, once for all, to reflect upon their cause and natuje, and the manner in which they are combined, and what they denote. You are aware that when air is propelled through a cylindrical tube of a certain size, and when that tube is narrowed in a particular way at one or more points, a musical note is produced. Now this is what often happens in the larger bronchi ; this is what always happens in them when rhonchus is present. Rhonchus belongs to the larjrer divisions of the bronchi exclusively; and as these are often, for a time exclu- sively affected, so rhonchus may exist alone. It will be grave or deep in proportion to the length and diameter of the tube in which it is produced. When the sound is grave and deep, the hand placed upon the chest may frequently perceive a trem- bling or thrill communicated to its parietes. I believe that rhonchus is mostly occa- sioned by portions of viscid half solid mucus, which adhere to the membrane and cause a virtual constriction of the air-tubes, and act as vibrating tongues while the air passes by them. I conclude such to be the case, because it seldom happens that the rhonchus cannot be got rid of by a vigorous cough. It will soon begin again, perhaps, or it will commence in some other part, but the effort of coughing, which detaches and removes the adhering tough mucus, dislodges also, for the time, the ihonchus. Yet, rhonchus in a given spot may be permanent : a tumour, or a tubercle, may flatten one of the air-tubes, and convert it into a musical instrument. For the mosi PHYSICAL SIGNS. 531 part, you will find what I have told you holds true : you may suspend tne rhonchus by getting the patient to make a hearty cough. Now in the natural state of the chest, we do not, except in particular spots, hear the transit of the air through the larger bronchi. Whatever sound it makes is damped by the spongy lung, or covered by the vesicular breathing. But rhonchus, in its turn, may overpower the vesicular murmur, and render it inaudible. It does not prevent it, but it outroars it, as it were. Yet this is seldom the case : you hear the rhonchus, and, if you listen attentively, you may in general hear, mingling with it, the vesicular murmur also. Recollect, then, that rhonchus belongs to the larger divisions of the air-tubes ; that it denotes their partial narrowing ; that it is a dry sound ; and that the condition of which it is ex- pressive implies usually no danger : there is no rhaterial obstacle to the passage of the air through these larger tubes to the vesicular structure beyond them. I must further admonish you, that in your earlier essays in auscultation you will De apt to deceive yourselves in respect to the exact place in the lung in which the rhonchus which you hear is produced. It is so loud a sound, that when it proceeds from a single bronchial tube it may be plainly audible over the whole of that side of the chest ; and sometimes, more obscurely, over the other side too. When air is driven with a certain degree of velocity through a small pipe, it gives rise to a hissing noise. It is by forcing air through a cylinder perforated by a slender tube, that Professor Wheatstone obtains the sound of the letter S in the talking machine which he has constructed, after Kempelon's model. Precisely this condition we have in the smaller bronchial ramifications, when the inflammation in catarrh or bronchitis has reached ihe?7i, and rendered the membrane hning them tumid. And sibilus is the result of this change. Now sibilus, like rhonchus, may exist alone ; and, inasmuch as the sibilus proceeds from the smaller air-tubes, adjacent to the pulmonary vesicles, it abolishes the natural respiratory murmur. It does not, like simple rhonchus, merely drown it, but it takes its place. If you hear the res- piratory murmur mingling with sibilus, you may be sure that some of the lesser air- tubes are narrowed, and some free : you cannot have both sounds at once from the same ramifications of the bronchi. Sibilus is a sound of more serious import, there- fore, than rhonchus ; it bespeaks a condition of greater danger. It belongs to the smaller air-tubes and vesicles, and denotes that they are in the first stage of inflam- mation, which has diminished their natural cahbre, by rendering the membrane tumid. It is a dry sound, but you cannot cough it away. I say rhonchus may occur alone, and sibilus may occur alone ; but very often indeed they both occur together; and maybe heard in various parts in different degrees : causing a strange medley of groaning, and cooing, and chirping, and whist- ling, and hissing, mixed, it may be, here and there, with the natural respiratory murmur. When you hear sibilus over the entire surface of the chest, the mucous membrane is universally affected, and the case is a severe one, and attended with considerable hazard. It is just possible that a sibilant sound may proceed from a large air-tube, when its bore has been narrowed to a very minute slit or orifice ; but this possibility does not interfere with the general distinctions that I have been endeavouring to point out. Now in these cases we neither obtain nor require any information from percus- sion, except of a negative kind. Supposing the inflammation confined to the mu- cous membrane, the resonance on percussion will not be sensibly diminished ; the lung is everywhere spongy still, and air reaches every part of it, though not with the «isual freedom. There is one exception to this. Occasionally, though rarely, a piece of tough phlegm may seal up, as it were, the very entrance of one of the principal bronchial tubes, and so prevent the air from passing to or from the portion of lung to which that tube conducts. When this happens, it is very likely to puzzle the auscuitator for a time. There is air in the sealed-up portion of lung, therefore percussion gives a natural sound ; but the air is at rest, therefore no sound of respiration is audible. An effort of coughing unstops, perhaps, the bronchial tube ; and *hen the air is ao^iu 532 CATARRH. heard to enter and to depart from that portion of lung. I shall advert to this sort of accident again. Finally, I may remark, that these dry sounds, rhonchus and sibilus., are heard during the breathing: they have no relation to the voice or to the cough. After a while, the inflamed membrane begins again to pour out fluid ; but it is not the thin, bland, moderate exhalation of health ; it is a glairy, saltish, transparent liquid, like white of esg somewhat ; and if it be expectorated only after much cough- ing, it will be frothy also, i. e., it will contain many bubbles of air entangled in it. It is a stringy, tenacious fluid, and the more so in proportion to the intensity of the inflammation. With this new condition of the membrane, we have new sounds — sounds which result from the passage of air through a hquid ; sounds which are occasioned by the formation and bursting, in rapid succession, of numerous little air- bubbles. These sounds are called crepitations. This process may take place in the larger air-tubes, or it may take place in the smaller, or in both. In the larger tubes the bubbles will be larger, and the ear can readily distinguish this ; we have large crepitation. In the smaller air-tubes, we have, in the same way, small crepi- tation. There is no difference between these sounds, except in degree ; and they graduate insensibly into each other. But there is a considerable difference in the nature of the intimations which their well-marked varieties convey. If there be merely large crepitation, without any other morbid sound, it is produced in the larger tubes. Air passes, notwithstanding, into the vesicular structure beyond the accumulated liquid ; and vesicular breathing exists, though perhaps it cannot be heard, on account of the crepitation. But the state of the patient is not a state of peril. On the other hand, small crepitation has its seat in the smaller air-tubes and cells ; it supersedes the vesicular breathing, and, if extensive, it bespeaks considem- ble danger. .. Rhonchus and large crepitation are respectively the dry and moist sounds that belong to the larger bronchi ; sibikis and small crepitation the dry and moist sounds of the smaller branches. When the latter sounds are heard over a considerable part of the chest, there is, I say, usually a good deal of distress, dyspnoea, and cough ; and the fever which attends the local inflammation is at its height. By and by the expectoration becomes opaque, and more consistent, and of a greenish or yellowish colour; it is brought up with more ease; the crepitation, great and small, dimi- nishes ; perhaps rhonchus reappears : but at last the parts return to their original condition ; and the natural, smooth, equable rustle of the breathing is again every- where audible. These are all the morbid sounds to which active and recent inflammation of the mucous membrane of the air-passages ever gives rise : rhonchus and sibilus ; large and small crepitation. Having once described their nature and causes, I need not repeat the description if we find them accompanying other diseases : but their im- port may be different. I may mention here, that as crepitation results from the passage of air amongst and through liquid, from the rupture of the little air-bubbles so produced, the kind of liquid may vary. If the air, in going and returning, meets with serum, or with pus, or with blood, it will occasion exactly the same bubbling noise. Hence the French term for what I have been calling crepitation, viz., mu- cous rattle, is very objectionable. From the sound itself, we cannot tell whether it proceeds from mucus or from some other liquid present in the air-passages ; and from this objection the word crepitation, whatever exception may be taken against it on other accounts, is free. Having thus embraced the occasion of explaining these auscultatory signs, I will novv resume the history of catarrh. It implies inflammation of the mucous mem- brane of the air-passages; 'and it receives different appellations, according to the dis- trict of that membrane which it chiefly plagued : gravedo, in the frontal sinuses ; coryza, in the Schneiderian membrane of the nose ; bronchitis in the trachea and ••ungs. Catarrh is the commonest of all disorders : — not one man in ten thousand passes a winter without having a cold of some sort. And this name points to its ordinary vause : cold somehow applied to the body. It does not always or often result, I CATARRH. 533 apprehend, from cold air brought into contact with the membrane iiself, in the pro- cess of breathing ; but from cold, and especially from cold and wet, applied to the external integument. It is unnecessary for me again to go over the circumstances under which the application of cold is most likely to prove injurious. Catarrh is usually a trivial disorder, and runs its course in a few days, if abstinence be observed with respect to animal food and stimulating liquor, and if the patient remains in an equable temperature, and avoids re-exposure to the cause of his malady. I am now speaking of the milder forms of catarrh. We are not often consulted for this com- plaint. Every man, in regard to a cold, thinks himself quahfied to be his own doc- tor. But if you are consulted, keep your patient in the house, or even in bed ; let him live upon slops ; give him a gentle aperient, and then some of those medicines •w^hich are esteemed to be diaphoretic: small doses of James's powder; three drachms of the liquor ammonise acetatis, with a drachm of the spiritus aetheris nitrici, and an ounce of camphor mixture ; or a saline draught with an excess of alkali, and a few grains of nitre, or a little antimonial wine ; three or four times a day : and let him take four or five grains of Dover's powder, and put his feet and legs into a warm bath, just before he goes to bed. In this way you may conduce to his recovery ; and he may be simple enough to believe that you have cured him. Yet I believe catarrhs may sometimes be cured; and the natural recovery from them may be, sometimes, accelerated. If you practise the old maxim, which says, " venienti occurite morbo," you may occasionally stop a cold on the threshold, as it were, by an opiate. And to persons who are habitually troubled with slight catarrhs, this piece of practice may prove of the greatest value. A medical man who resides in this neighbourhood, and with whom I was a fellow-student, is exceedingly subject to what he calls a snivelling cold. For many years he used to bear this as he best might ; and that, to say the truth, was very ill and impatiently. On one occasion, almost by accident, he took twenty drops of laudanum just as one of his colds was beginning to torment him, and he found that the initiatory symptoms ceased. Since that time he has constantly had recourse to the opiate under similar circumstances ; and whereas he used formerly to be very miserable for three or four days, he now is quite well and comfortable in the course of half an hour. And this is not a solitary case. It is worth trying, if you experience the feelings of an incipient catarrh, to go to bed, and to take a beaker of hot wine negus, with a tablespoonful of the syrup of poppies in it. This will not suit every person; but if it fails on the first trial, it need not be repeated, and no great harm, beyond an increase of headache, will be done by it. I would not recommend this plan, however, to a plethoric person ; nor to any one having a tendency to inflammatory disease ; for when it does not cure, it makes the complaint worse. There is also a period in catarrh which has gone on unchecked, when you may accelerate its departure — "speed the going guest" — by a good dinner, and an extra glass or two of wine. But this pleasant method is scarcely to be advised for persons of delicate habits ; or in whom any pthistical tendency is suspected to exist ; or who are prone to inflammation. And it is not to be tried with any one till the fever is over, and the expectoration thick and loose. t must not omit to mention the dry plan of cure ; although (I confess it with some shame) I have never yet tried it either upon myself or upon others. Dr. C. J. B. Williams, who invented it, I believe, has a high opinion of its efficacy. It certainly has the merit of simplicity, for it consists merely in abstinence from every kind of drink. No hquid, or next to none, is to be swallowed until the disorder is gone. The principle here concerned is that of cutting off the supply of watery materials to the blood. The wants of the system exhaust, from the circulating fluid, all that can be spared for the natural evacuations ; and there is nothing left to feed the unnatural secretion from the inflamed mucous membrane. Its capillary vessels cease to be congested ; the morbid flux is diverted, and the inflammation starved away. Such is the theory. Habitual topers might hold the remedy to be worse than the disease ; but Dr. Williams assures \is that the necessary privation is not very hard to bear ; and that it achieves a cure, upon an average, in forty-eight hours. He allov.-s, wiib- 2u2 534 ACUTE BRONCHI ris. out recommending, a tablespoonful of tea or milk for the morning and evening meals and a wine-glass of water at bed-time. One o-reat advantage of this plan is, that it does not require confinement to bed, or to the house. The man whose business calls him abroad, ma)-, with appropriate clothing, pursue his customary employment, and his cure is all the while going on. fn fact, exercise, inasmuch as it promotes perspiration, helps the recovery; whereas the system of warm drinks and diaphoretics renders the body more susceptible to atmospheric vicissitudes ; and, to be effectual, implies restrictions which are often- times extremely inconvenient. Dr. Williams observes, that while this dry treatment is serviceable in catarrhal bronchitis, it is most successful in coryza, the snivelling cold in the head. It must be put in force in the very commencement of the disorder. You may often do much by way of prevention, for persons who are unusually liable to take colds. I have remarked before upon the great value of the shower- bath for that purpose. I could mention several instances in which persons have got rid of the tendency to catch cold by the habitual use of this aspersion. It should be begun in the summer, and made tepid at first ; but in a short time quite cold water may be employed ; and being once begun, the practice may be continued through the Avinter. I stated formerly, that the efTect of exposure to cold was, caetcris pari- bus, in proportion to the intensity and the duration of the sensation of cold that it produced. The intensity of the sensation of cold under the shower-bath is consider- able, but the duration of it is momentary. It operates as a prophylactic in this way : it inures the surface to a lower temperature than it is likely to be subjected to at any other part of the day. The lesser degrees of cold have then no injurious effect, un- less they are long protracted. For those who cannot procure a shower-bath, or who cannot bear its shock, cold sponging Avill be found exceedingly salutary. But inflammation of the membrane lining the air-passages may be, and often is, a very acute and dangerous disorder, i. e., the inflammation may be both intense and diffused ; it may descend into the vesicular texture, and occupy the whole surface of the membratie on one side of the chest, and then it may prove a very grave dis- ease ; or it may involve the whole lining membrane of both lungs, and then it is always attended with considerable peril. This inflammation will sometimes, when it is thus general over the whole mem- brane, linger for a considerable period in its first stage ; and it may even, after so hntrering, subside asain without ever passing beyond the first stage. By the first Etaee, I mean the stage of dryness. Very little notice of this modification of bron- chitis has been taken by authors. Dr. Latham has given a distinct and graphic description of it, to the accuracy of which I can testify from my own experience. You will find cases of it detailed in his book. Since they were published, some striking instances of this form of the disease have occurred to myself. One, which happened lately, I will relate by way of example. I was asked by an old pupil of the hospital to see a lady, his patient, in Gordon Square. I found her feverish and in a state of extreme dyspnoea, sitting up in bed from inability to lie down, labouring for her breath ; her face turgid and rather livid, her nostrils working, her shoulders elevated. She could scarcely speak, but expressed, in what she did say, a dread of imm.ediate suffocation. She had been in nearly the same state for a day or two. On listening at her back I could hear the air slowly wheezing and whistling into her lungs everywhere, and then leaving them still more slowly, with a prolonged growi, something hke that of an angry cat. There was no true vesicular breathing ; there was no crepitation ; and there was no part into which the air did not, although with ditficulty, find its way. The chest was everywhere resonant on percussion. There could be no doubt that the membrane throughout was tumid and dry, and in the earliest stajre of inflammation. Depletion had already been employed in this case, and we had recourse to the tartar emetic. This was given in free and repeated doses, till it produced nausea and sickness. Whenever it did so, the pulse dimin- ished in force, the face became blanched, and the breathing much easier ; and the medicine was then suspended until these effects had gone off, when it was repeated •V the same manner The disease was not, however, brought at once to an end by ACUTE BRONCHITIS. 53o this treatment ; it was kept at bay for a day or two longer, and then a copious secretion from the membrane took place, with great relief to all the distressing symptoms. 7^hen, of coarse, crepitation became universally audible. Except the debihty which it left behind, the patient soon recovered of the bronchial inflam- mation. But in the great majority of instances the inflammation does not thus linger in its first stage ; the membrane soon begins to pour forth glairy mucus ; so that we do not often meet with sibllus, without finding at the same time, in some part of the same lung, that there is also small and large crepitation. It is of some importance to attend to the characters of the mucus that is expectorated. It is transparent and adhesive. If you pour it from one vessel into another, it flows out in one mass of extreme tenacity ; it will draw out sometimes hke melted glass ; and the degree of viscosity is a tolerably accurate measure of the degree of the existing inflammation. Upon the surface of the viscid mucus there is usually more or less froth, the quantity of it depending on the facility or the difliculty with which the sputa are brought up. If the patient does not expectorate till after a long fit of coughing, during which air has been many times inspired and expired, and has thus got intimately mingled with the mucus that fills the air-passages, the expectoration will contain numerous little air-bubbles ; will be very frothy. Sometimes also, during this stage of the com- plaint, the sputa are marked Avith streaks of blood. While the expectoration possesses the characters I have been describing, the inflammation is still intense, and the fever and dyspnoea considerable. This cor- respondence between the general symptoms and the matters spat up was well known to the ancients, who said that such expectoration was still crude. But in proportion as the inflammation approaches to resolution, the appearance and qualities of the sputa are changed ; the mucus loses by degrees its transparency, is mixed with masses that are opaque, and of a yellow, white or greenish colour : and these masses, few at first, increase more and more in number, until they constitute the whole of the sputa. Such expectoration as this is commonly accompanied by' a marked re- mission in the different symptoms of the bronchial inflammation ; it announces that the inflammation is terminating in resolution. It is such as the ancients spoke of as being concocted, or ripe. However, the characters of the opaque sputa expecto- rated towards the end of an attack of acute bronchitis are subject to much variety. It will often happen that the expectoration, after having thus become opaque, and parti-coloured, will go back again to its former condition of transparency, and sticki- ness, and froth : and that is a very certain index of a return or increase or extension of the inflammation ; so that the character of the matter expectorated exhibits, in a certain degree, the progress of the inflammation ; and consequently constitutes one point of guidance to our treatment. The nature of the expectoration forms also an important particular in our means of distinguishing bronchitis from pneumonia; as I shall further explain when I speak of the latter disease. I have described acute bronchitis as it appears when it terminates favourably : in such cases the inflammation generally begins to abate, somewhere from the fourth to the eighth day of the disease. But acute bronchitis may terminate wxfavoKrably. When the inflammation is universal and intense, the fever high, and the labour of respiration great — if the symptoms do not yield to the treatment employed, or if judi- cious treatment has not been adopted, or has been too long delayed, signs of im- pending suflxjcation begin to show themselves : the lips and cheeks, and tongue, assume a purplish colour; a livid paleness takes the place of the former red flush; the expression becomes more and more anxious : delirium comes on, and rapid sinking. These indicate, you know, the circulation of blood that is in a great measure venous through the arteries ; and the venous blood acts as a poison when it so circulates Profuse, cold, clammy sweats ensue ; and the patient dies of apnoc. His breathm- is choked by the morbid secretion which occupies the bronchial tubes, small as wel! as large, and which he has not strength enough left to cough up. Accordingly, when we examine the thorax after death so produced, we find, ni the first place, that the lungs do not collapse upon the admission of the pressure of the rttmosphere to their external surface. We next find the trachea, and bronchi, and 536 ACUTE BRONCHITIS. their ramifications, blocked up by a frothy adhesive mucus, resembling that which during life had been expectorated ; and the membrane which lines them is red and thickened. The treatment proper for these acute and dangerous forms of bronchitis is a matter of some nicety. Blood-letting, as I formerly stated to you, has not that decided power over inflammation of the mucous tissues which it possesses over the adhesive inflammation that takes place in the serous membranes. If there be much fever, a hard pulse, and great oppression of the breathing, and particularly if these symptoms present themselves in a young, strong, and robust individual, we must bleed him from the arm. And you will always find blood-letting relieve the symptoms ; even when its ultimate effect may be injurious. The patient's distress arises from his inability to supply air enough to arlerialize the venous blood which is transmitted to his lungs ; and by diminishing the quantity of blood sent to those organs, you will, pro (anto, mitigate his uneasiness. But a great part of the danger to be apprehended in the advanced periods of the disease, is that the patient may not have muscular power enough to disembarrass his air-passages of the phlegm that overloads them ; to draw a strong breath, and to achieve a vigorous cough. We must not bleed therefore to syncope, and again and again, as we are often justified in doing in cases of pneumonia. Sixteen ounces will be a moderate bleeding at first for an adult, but more or less than that must be taken, and the bleeding must be repeated or not, according to the condition of the pulse : for the pulse affords a better measure of the propriety of pushing the abstraction of blood, than is furnished by the local symp- toms. Great relief is often obtainable by topical blood-letting; by cupping over the sur- face of the chest, or between the scapulae. If you distinguish sibilus in one portion of the lung more than in another, take the blood rather from that part of the surface which corresponds to the place of the sibilus. After the bowels have been cleared by a mercurial purgative, calomel and jalap, for example, you will find the tartar emetic a very valuable medicine in these acute cases of bronchitis. It should be given in such doses as will excite nausea: and if vomiting be occasioned, you may still go on with the medicine after the sickness has subsided. The depression which this substance produces is great, but it is tempo- rary, and it is effi'Cted without expending blood. With the antimony — I mean during the same period— mercury may and ought to be given : to this combination I should be inclined to trust more than to any other internal treatment. If syraptf'iiis of sinking and debility have begun to show themselves, it \\i\l be necessary to administer stimulating expectorants. I presume that the carbonate of ammonia, which is often extremely useful in such cases, acts as an expectorant, by giving a fillip to the muscular power. But it is supposed by some persons to exer- cise some specific influence upon the bronchial membrane. However this may be, five or six grains of it, given in solution every four or six hours, are often followed by free expectoration and a marked improvement. One of the circumstances of which patients are much disposed to complain, is the violent or importunate cough; and another is, the want of sleep and of rest; indeed, the one of these is often, in a great measure, the cause of the other ; — the urgency or frequency of the cough prevents the patient from sleeping. Now there is nothing so well calculated to allay cough, and to procure sleep, as opium ; and you will be strongly tempted to give these patients opiates, and you will probably be encouraged to do so by the success which will follow that practice in many cases. The good efft'cts of a full narcotic at bed-time are sometimes very striking. Patients who for previous nights have been perpetually harassed by cough, and who are worn out by the disturbance of their rest, will sleep tranquilly, and in the morning expectorate largely and freely, and declare themselves wonderfully the better for their opiate. Yet opium is a ticklish remedy in these cases. Many a patient — some within my own knowledge — labouring under general or extensive broncnitis, have been put so soundly to sleep by a dose of opium on going to bed, that they have not waked again. I believe you may receive it as a golden rule in ih'^se case.s not to give opium — I mean in a full dose, so as to force sleep — if you see 1 PERIPNEUMONIA NOTHA. 537 any venous blood mingling in the general circulation, — if the complexion be dusky, and the lips in any degree blue. The circulation of half-arterialized blood through the brain is in itself a powerful cause of coma ; and if you add the influence of an opiate, the coma may easily be made fatal. While the cheeks and lips remain florid, and when the first violence of the disease has abated, an opiate will do capital ser- vice. It is a common practice to combine it with antimony or some other expecto- rant. Twenty minims of laudanum, with the same quantity of the liquor antimonii tartarizati ; or a third of a grain of the acetate of morphia, with a drachm of oxymel of squills ; are convenient forms. Counter-irritation is frequently of great use, as an auxiliary measure, in the treat- ment of acute bronchitis. Sensible rehef of the cough, and of the oppressed breath- ing, often follows the rising of a large blister laid across the front of the chest. When the dyspncea is extreme, and a more speedy counter-irritant is required, you may have recourse to the mustard poultice. Inhalation of the steam of hot water is also very soothing and useful. It is one of the best expectorants I know of when it answers at all ; but to some persons it proves irritating, and they derive no comfort from it. I have been speaking of acute bronchitis, uncombined with any other pulmonary disease ; and it is curious how little disposed the inflammation often seems to be to extend itself from the mucous membrane to the neighbouring tissues. The reason, doubtless, is, that this membrane is furnished with a distinct set of blood-vessels, the bronchial arteries, and veins : while the substance of the lungs is supplied by the pulmonary. We could not tell, merely by attending to the general symptoms, whether the inflammation was hmited to the inner membrane or not ; but by making use of the sense of hearing, we are able to determine this. If the inflammation should spread to the parenchymatous texture of the lungs, — i. e., if the bronchitis should pass into pneumonia, — this circumstance would be disclosed by physical signs, which I shall in due time prescribe and explain ; and it would demand certain modifications of our plan of treatment. I shall have to speak of some varieties of chronic bronchitis ; but there is a mixed form of pulmonary disease that requires to be noticed, in which acute or subacute inflammation engrafts itself upon changes that are chronic and abiding. Sydenham calls the disorder to which I now refer peripneumonia notha — bastard peripneumony. ■ Calarrhiis senilis is another of its names. It may be considered as chronic bron- chitis, occurring in old persons, and very apt to be converted into pneumonia, or to be greatly aggravated in degree during winter, or upon any accidental exposure. This is the common complaint of persons advanced in life. I mention it here in compliance with the usual custom, and because this is as convenient a place for its introduction as any. But it would be an error to regard it as exclusively a disease of the mucous membrane of the lungs. An habitually congested state of that mem- brane, marked by some shortness of breath, and some expectoration, and by the constant presence of some degree of crepitation in the lower parts of the lungs, — these are circumstances which are of daily occurrence as consequences of disease of the heart ^ and it is in persons whose habitual health is of this kind, that what is called peripneumonia notha, which implies a diffused inflammation of the pulmonary mucous membrane, with sometimes an enormous secretion from its surface, is most apt to supervene. Almost all such persons will tell you that there are periods at which they experience slight febrile attacks, and exacerbations of their complaints : they have pain in the breast or side, headache, heat, and thirst ; and at these periods the cough and expectoration are always aggravated, and continue for some time to be more than commonly severe. "The disease (says CuUen, who, following Syden- ham, has given a good description of its general symptoms) has often ihe appearance only of a more violent catarrh ; and after the employment of some remedies, .s entirely relieved by a free and copious expectoration. In other cases, however, the feverish and catarrhal symptoms are at first very moderate, and even slight ; buf after a few days these symptoms suddenly become considerable, and put an end to the patient's Hie, when the indications of "danger were before very little evident.' 538 PERIPNEUMONIA NOTIIA. The truth is, (and we learn the truth by the evidence of auscultation,) that ia these cases pneumonic inflammation is often suddenly set up. There is no security, as Dr. Latham observes, that the portions of lung which yield small crepitation to- day may not be solid and impervious to-morrow. Dr. Latham is of opinion that in this disease the inflammation is apt to travel over the bronchial membrane from place to place, as erysipelas is seen sometimes to wander over the surface of the body. I know not how this may be ; but certainly death is often produced in these persons by the sudden spoiling of even a moderate portion of lung. In their ordinary con- dition, the patients have just enough, and no more, of the respiratory apparatus in an effective stale, whereby to subsist ; and when a fresh part of it is rapidly rendered solid, they quickly perish. But they die also from another cause. The nicety of treatment which I spoke of as being required in certain stages of acute bronchitis, ia still more apparent and necessary here. We are placed in this dilemma. If we do not take biood in these attacks, we run a risk of losing our patient from the effects of the unchecked inflammation ; and if we do bleed, we are in danger of losing him by producing a degree of weakness which will render him unable to expecto- rate the effused mucus, and so liable to perish by suffocation. Leeches and blisters, and what are called expectorants, are the remedies to which we must chiefly trust. Medicines, which are at the same time diuretic are also serviceable — the spiritus aslheris nitrici, the preparations of squill, and of digitalis. Even in younger patients, in whom the bronchitis is idiopathic, not engrafted upon any previous disease of the chest, and in whom the disorder had not appeared severe, extreme difficulty of breathing will sometimes most imexpectedly arise, and some- times it will rapidly lead to the extinction of life. Now both Andral and Laennec have pointed out one cause (to which, indeed, I have already adverted in the pre- sent lecture) of this sudden change for the worse. It is a cause which was not likely to be even guessed at before the discovery of the method of auscultation. Occasionally it happens, they say, that during the course of an attack of bronchitis, we cease altogether to hear, in a certain extent of the lung, either the natural respira- tory murmur, or any of the modifications of rhonchus, sibilus, or crepitation, that have been mentioned ; yet over this same portion of lung, in which no sound, healthy or morbid, is heard by the ear apphed to the thorax, percussion gives the natural hollow sound. At the same time the patient becomes affected with urgent dyspnoea. This sudden suspension of all sound of respiration they attribute to the temporary, or, in some cases, the permanent, obstruction of one of the bronchi, the ramifications whereof are distributed to that portion of lung in which the respiration is no longer audible. In such cases it generally happens that at the end of a strong fit of coifo-hing — the effect of which is to expel, or at least to displace the tenacious plug of mucus obstructing the bronchus — the sound of respiration is re-established as suddenly as it had previously disappeared ; and the dyspnoea also ceases. In some rarer cases, however, the noise of the pulmonary expansion does not return, the difficulty of breathing increases, suffocation becomes imminent, and death by apncea rapidly takes place. The slightest attack of bronchitis may in this way be suddenly transformed into a most serious and quickly fatal malady. Andral relates two instances of death from this cause ; one of which was the fol- lowiuij. A coachman, fifty years old, had been several times a patient in La Charite, for obstinate pulmonary catarrh, with slight dyspnma, and puriform expectoration. Every time he went away relieved, but not cured. On both sides of his chest could be heard all the varieties of rhonchus. In one spot the column of air which pene- trated the bronchi imitated the snoring of one in a deep sleep ; in another spot it was like a duU and prolonged groan ; in a third, a sound resembling that made by bellows ; and in a fourth the cooing of a turtle-dove was exactly simulated. On the last occas.on of his entering the hospital, his respiration was still tolerably free. One iTiorning he was found in a state" of unusual anxiety. In the middle of the night, after a violent paroxysm of cough, his breathing (he said) had suddenly become very much oppressed. It was discovered, on auscultation of his chest, that no air pene- trated into the upper lobe of the right lung; yet that part sounded well on percus- sioi.. even louder than the corresponding part of the other side, which was morbidly INFLUENZA. 539 dull. The difficulty of breathing went on augmenting, and the man was soon dead. Besides other marks of disease in the lungs, the primary bronchus leading to the upper lobe on the right side was closed up completely by tough mucus, and exhi- bited the appearance of a full cylinder. In the other case, also, the obstructed bronchial tube supplied the upper lobe of the right lung. It may seem strange that the interruption of the access of air to so small a portion of the lungs should be attended with such serious consequences, when we know that the greater part of each lung may be impermeable by air, and yet the patient liv^e a long time, and often without any great dyspnoea. The explanation of the apparent difficulty seems to be, that in the one case the prevention of the arrival of air in the part afffcted is sudden, in the other gradual. Moreover, the remaining portions of the lungs are performing their functions imperfectly. When once attention has been awakened to the kind of accident just mentioned, the diagnosis would not seem to be difficult. We may suspect obstruction of one of the bronchi when considerable dyspnoea comes on suddenly during the continuance of simple bronchitis: and our suspicion will be confirmed if at the same time respi- ration ceases to be audible in a certain portion of the lung, while the sound given by ])ercussion over the same part remains unaltered. Emphysema of the lung (which I shall explain hereafter) is the only other condition which could give rise to a similar set of symptoms. Andral judiciously suggests the employment of emetics, and the inhalation of steam, in such cases. LECTURE XLIX. Injliienza. Symptoms and progress. Conjectures as to its cause. Treatment. Hay asthma. Chronic Bronchitis. Its varieties. Morbid anatomy of these affections. Catarrh, which was the principal subject of the last lecture, occasionally prevails far and wide as an epidemic disease. I speak, indeed, (February 4, 1837,) during the immediate presence of one such visitation, although the extreme violence of the complaint that has been raging among us is now fast subsiding. You can hardly be without curiosity to know what has been learned respecting an influence which has thus, on a sudden, before your eyes, disturbed and sickened a whole community. I have here used, without thinking of it, the very word by which, in a foreign version, the disorder is denominated. It has received, however, various names ; for it has been known and noticed from remote antiquity. Cullen calls it catarrhus e contagio: and under that head, in his Nosology, you will find a copious reference to recorded accounts of epidemic catarrh, as it has been observed to spread over great portions of the world. In France the disorder thus prevailing is styled the grippe. The Italians, putting the cause for the effect, called it influenza, the injlu- ence: and this last term, influenza, has now become naturalized in our language. Since Cullen wrote there have been four or five more of these epidemics. One in 1782, which extended over all Europe, visiting every country therein, affecting more than one half of its inhabitants, and proving fatal to very many of them. You will find, in the third volume of the Transactions of the College of Physicians, a good account of the disease as it then showed itself in this country. In the spring of 1803 another instance of it occurred ; and of this the history, as compiled from the testi- mony of a hundred and twenty-four observers, is preserved in the ninth and tenth volumes of the London Medical and Physical Journal. In the month of April, in the year 1833, the influenza arrain made its appearance, and prevailed extensively, both here and elsewhere : and of the influenza of 1837 you have had, and you still have, the opportunity of being observers. A very good and instructive sketch of 540 INFLUENZA. this epidemic malady, compiled by Dr. Hancock, is to be found in the Cyclopxdia of Practical Medicine. To that article, to the publications I just now mentioned, and to the works enumerated by Cullen, I may refer you for much which is curious and interesting in the history of the disease ; but which would not be so well adapted to our immediate purpose in this place — namely, that of seizing upon the practical facts which have been ascertained respecting influenza. One characteristic feature of this species of catarrh, as distinguished from the ordi- nary sporadic disorder, is the sudden occurrence, in the outset, of more decided febrile disturbance. The first two patients whom I saw in the epidemic of 1S33 had just the symptoms which frequently mark the commencement of an attack of conti- nued fever ; and I did not know, at my first visit, what was about to happen to them. The symptoms, taking them altogether, are somewhat as follows. The patient is chilly, and perhaps shivers ; presently headache occurs, and a sense of tightness across the forehead, in the situation of the frontal sinuses ; the eyes become tender and watery ; and sneezing and a copious defluxion from the nose ensue, followed or accompanied by heat and uneasiness about the throat, hoarseness, a troublesome cough, and oppression of the breathing. In short, the symptoms are the symptoms of catarrh ; including in that term all the varieties thereof that are sometimes met with separately — gravedo, cor}'za, bronchitis : and with these symptoms a sudden, early and extraordinary subdual of the strength; and, most commonly, great depres- sion of spirits. The debility which comes on at the very outset of the complaint, is one of its most singular phenomena, taking place, in some cases, almost instantly, and in a much greater degree than would seem proportioned to the other symptoms of the malady which it thus ushers in. Indeed, this rapid and remarkable prostra- tion of strength is more essentially a part of the disorder than the catarrhal affection, which sometimes (though rarely) is absent, or imperceptible. It is upon the mucous membranes, however, that the stress of the disease generally falls ; especially upon the internal lining of the air-passages. Those of the alimentary canal seldom escape entirely ; but they suffer in a less degree. The tongue is white and creamy, the palate loses its sensibihty, the appetite fails, nausea and vomiting are not uncommon, and sometimes there is diarrhoga. The pulse, in the uncomplicated disease, is soft, and generally weak. The patients complain also of pains in the limbs and back, and of much soreness, a bruised, fatigued, or tender feel, along the edges of the ribs and in various parts of the body. In its simple form and ordinary course, the disease abates of its violence after two, three, or four days, and the patient is usually convalescent before the termination of the week : but cough and much debilitj'- are apt to survive the other symptoms, and while these continue, the complaint is very easily renewed. Pre-existing disease, and peculiar constitutional habits and tendencies, modify considerably the character of the influenza, as it affects different persons. I do not attempt to represent its va- rious phases ; they are fit subjects of study for yourselves. I have remarked that Cullen makes this species of catarrh to proceed from conta- gion. But the visitation is a great deal too sudden and too widely spread to be capable of explanation in that way. I will not say that the disease may not be iri some degree infectious ; for there is reason to believe that other epidemic disorders, having many points of analogy with the influenza, are somehow imparted from one individual to another, akhough they are mainly produced by some influence which resides in the aunosphere. There are points in the history of influenza which fur nish a strong presumption that the exciting cause of the disorder is material, not a mere quality of the atmosphere ; and that it is at least portable. The instances are very numerous, too numerous to be attributed to mere chance, in which the com- plaint has first broken out in those particular houses of a town at which travellers have recently arrived from infected places. But this great and important question of contagion I hope to examine with you more rigorously on a future occasion. What I wish to point out now is the fact that the influenza pervades large tracts of country in a manner much too sudden and simultaneous to be consistent with the notion that its prevalence depends exclusively upon any contagious properties that it may possess. You are aware that it has recently seized upon all parts of this INFLUENZA. 541 metropolis — and I believe I may say of nearly the whole kingdom — within the space of a very few days. It has been observed to occur also, at the same time, on land, and on board different ships which have had no communication with the shore, nor with each other. Thus it is stated in the Transactions of the College of Physi- cians, that on the 2d of May, 1782, Admiral Kempenfelt sailed from Spithead with a squadron, of which the Goliah was one. The crew of that vessel were attacked with influenza on the 29th of JVlay ; and the rest were at different times affected, and so many of the men were rendered incapable of duty by this prevailing sickness that the whole squadron was obliged to return into port about the second week in June, not having had communication with any shore, but having cruised solely be- tween Brest and the Lizard. This happened in one part of the fleet. In the begin- ning of the same month, another large squadron sailed, all in perfect health, under Lord Howe's command, for the Dutch coast. Towards the end of the month, just at the time, therefore, when the Goliah became full of the disease, it appeared in the Rippon, the Princess Ameha, and other ships of the last-mentioned fleet, although there had been no intercourse with the land. Similar events were noticed in the epidemic of 1833. One or two curious instances of the sudden sickening of consi- derable bodies of men in different places at the same time, were related to me on good authority. On the 3d of April in that year — the very day on which I saw the first two cases that I did see of the influenza, all London being smitten with it on ihat and the following day — on that same day the Stag was coming up the channel, and arrived at two o'clock off" Berry Head, on the Devonshire coast, all on board being at that time well. In half an hour afterwards, the breeze being easterly and blowing off" the land, 40 men were down with the influenza ; by six o'clock the number was increased to GO, and by two o'clock the next day to 160. On the self- same evening a regiment on duty at Portsmouth was in a perfectly healthy state, but by the next morning so many of the soldiers of that regiment were affected by the influenza, that the garrison duty could not be performed by it. I make no doubt that facts of a like nature have occurred during the present epidemic, and will be made known in due time. They illustrate several important points in respect to the disease : viz., the impossibility of accounting for its prevalence upon the principle of mere contagion — the suddenness of its invasion — and the early and extreme pros- tration of strength with which it is attended. The occurrence of epidemic catarrh, as well as of most other epidemics, is un- questionably connected with some particular state or contamination of the atmosphere. What that state is, or what may be the kind of contamination, no one knows. The present epidemic followed hard upon the sudden thaw that succeeded the remarka- ble snow-storm of the last week of the last year. A similar coincidence between the breaking out of the same disorder, and a sudden elevation of the temperature of the atmosphere, happened at St. Petersburgh in the epidemic of 1782. " On a cold night (Maertens says), the thermometer rose 30° of Fahrenheit ; the next morn- ing 40,000 people were taken ill with the influenza." Now if every epidemic had been preceded by similar changes in the weather, we might resolve the universal prevalence and sudden accession of the complaint, into the effect of the cold and damp state of the air, produced by the thaw. But it is not so ; for, as Dr. Hancock observes, there has not been any uniform connection between any one sensible quality of the atmosphere as to the heat or cold, rain or drought, wind or calm — and the mvasion of the epidemic. " Et tempore frigidiori et calidiori, et flante tarn Austro quam Borea, et pluvioso et sereno caelo, peragravit haSce omnes Europa} regiones, et omnia loca indiscriminatim." Irregularities and great vicissitudes of weather have, however, gone before the disease in very many instances : but sometimes one condition of the atmosphere, and sometimes another, has been its immediate fore- runner: and the epidemic has frequently been observed to fall partially and caprici- ously : as a blight falls upon a field or district. Short, in his chronological history of the weather, says that thick ill-smelling fogs preceded, some days, the epidemic catarrh of 1557. Jussieu states that the grippe of the spring of 1733 appeared m France immediately after offensive fogs, " more dense than the darkness of Egypt." So also in 1775, Petit informs us that in France the disease was ushered in by thick 2v 542 INFLUENZA. noisome fogs. In the same year it visited the shire of Galloway in Scotland, where, we are told, " a continual dark fog and particularly smoky smell prevailed in the atmosphere for five weeks, the sun being seldom seen." Dr. Darwin has recorded that, in 1783, "the sun was for many weeks obscured by a dry fog, and appeared red as liirough a common mist :" and he supposes that " the materia] which thus rendered the air muddy, probably caused the epidemic catarrh which prevailed in that year." You will call to mind here the dark fog which brooded over this city in the midst of the raging of the distemper about ten days ago, and which was repeated in a less degree, on Wednesday last (Feb. 1). It has been observed also, that shortly before, or during, or soon after, the preva- lence of these epidemic catarrhs — epizootic diseases have raged ; various species of brutes, and of birds, have been extensive!}'- affected with sickness : while on some occasions prodigious swarms of insects have made their appearance. In short, a great variet)'- of facts concur to render it probable that some pecuhar con- dition of the air existed, which, though it might be favourable to the multiplication of some species of living creatures, such as the insects just referred to, operated as a poison upon the human body, and upon the bodies of many of the brute creation. It is a very curious circumstance in the history of epidemic catarrhs, and worthy of your reflection, that they travel ; migrate as it were from one place to another: and moreover, that they hold, for the most part, to certain courses, in spite even of opposite winds, and of variations of temperature. It has been noticed that the influ- enza generally follows a westerly direction, or one from the south towards the north- west. In this remarkable properly it resembles, as you may perhaps be aware, the epidemic cholera. AUhough the general descent of the malady is, as I have said, very sudden and diffused, scattered cases of it, like the first droppings of a thunder-shower, have usually been remembered as having preceded it. The disorder is most violent at the commencement of the visitation ; then its severity abates ; and the epidemic is mostly over in about six weeks. Yet the morbific influence would seem to have a longer duration. In a given place nearly all the inhabitants who are susceptibb of the distemper suffer it within that period, or become proof against its power. But strangers who, after that period, arrive from uninfected places, have not, apparently, the same immunity. The locality does not appear to be thoroughly cleared of the poison for some time : or perhaps a more cautious statement of the fact Avould be, that the disorder generally shows itself again in succeeding years, but in a milder and less general form. This must depend either upon some remaining dregs, or possibly some revival, of the mju- rious influence ; or else upon some abiding predisposition impressed upon the bodies of men by its former visit. You may hear, every year, of Mr. So-and-so having the influenza. In many instances, no doubt, common si)oradic catarrh is dignified by that name ; but it is certain also that many of the colds, and bronchial disorders, of the seasons which immediately follow a period of genuine influenza, are attended with much more languor, debihty, muscular aching, and distress, than belong to an ordinary attack of catarrh. All this is very curious ; and very mysterious. All this, or much of it, is true also of all the diseases which are known to prevail occasionally as epidemics. The facts that have now been mentioned respecting the influenza, warrant, I think, the conclusion that it does not depend upon any mutations in the ordinary qualities of the atmospere ; upon any degrees or variations, I mean, of its temperature, its motions, or its moisture ; upon what is expressed in the single word weather. Con- cernmg a calamity so generafly felt, and so obscure in its origin, conjecture, you may well believe, has not been idle. One hypothesis assigns the complaint to some change in the electrical condition of the air : to its becoming negatively electric : or to its being such as to cause an excessive accumulation of electricity in the animal econo- my. The facts adduced in support of these views are of this kind. Meat, sent up t»y means of a kite, high into the atmosphere, during the prevalence of the disease, has returned putrid. Large heavy separate clouds, in a state of negative electricity, INFLUENZA. 543 have been observed just before the setting in of an epidemic. Thunder-storms, and tumults of the atmosphere, have occurred at the same periods. During the raging ^f one epidemic, 300 women engaged in coal-dredging at Newcastle, and wading al. day in the sea, escaped the complaint. It has been thought that this exemption might be accounted for by supposing that the almost constant immersion of the body in a conducting medium prevented any undue collection of electricity. Again, it has been fancied that the tolerably definite course of the epidemic, in its migrations, might be somehow connected with magnetic currents. Another hypothesis, more fanciful, perhaps, at first sight, than these, yet more easily accommodated to the known phenomena of the distemper, attributes it to the presence of innumerable minute substances, endowed with vegetable or with animal life, and developed in unusual abundance under specific states of the atmosphere, in which they float, and by which they are carried hither and thither. Myriads of these animalcules, or of these vegetable germs, coming in contact with the mucous membranes, and especially with that of the air-passages, irritate (it is imagined) these surfaces, and exercise a poisonous influence upon the system. Now, the sporules of certain fungi, which ruin the health, and destroy the vitality of larger plants, on which they prey, are inconceivably small. I shall prove to you, presently, that vegetable effluvia are capable of producing, in the human body, symptoms not very dissimilar from those of influenza. Again, that the waters of this globe swarm with living creatures, which are invisible by our unaided eyes, the microscope has tauo^ht us. Others, too small even to be estimated by that wonder-showing instrument, in all probability exist. We cannot doubt that the gaseous fluid which surrounds this planet, equally teems with living atoms. We know that multitudes of insects, and of cryptogamous plants, infinite in number in respect to our finite powers of compu- tation, are sometimes suddenly hatched or developed, in places which were pre- viously free from them. It is easy to conceive that atmospheric infusoria (so to speak) may rapidly congregate, or vivify, in masses sufficient to render deleterious the very air we breathe. If this be so, we can understand how such a cause of dis- ease may first act here and there, and presently overspread large districts ; how it may move, or be wafted from place to place, or be carried about by persons ; how its course and operation may be circumscribed and definite ; and how some germs or ova may remain after the visit, retaining their vitality, and ready in future seasons again to start into life and activity under favouring circumstances. Taking the insect hypothesis, and knowing as we do that some animal poisons (that of small-pox, for example), have the singular property of multiplying themselves in the human body, like yeast in beer, we may conceive that diseases, produced by animalcules, may thus infect the fluids of the body, and become contagious in the fullest sense of that term. Lastly, the uniform duration of these epidemics has been supposed to add probability to the hypothesis that they result from the operation of some organic principle, which has its definite periods of growth and of decay. All this is sheer hypothesis ; but it is as good an hypothesis as I am able to offer you ; and you must be content to conceive of it as being possibly the true one, until a better shall be proposed. The character of debility which is so conspicuously impressed upon this disease, boars closely upon the treatment required for its cure, or its safe conduct. As in all other epidemics, the severity of the complaint is extremely variable in different per- sons. In some it proves a very trifling malady, Avhich soon passes off, and requires httle or no assistance from medicine. In others it is a very distressing affection, and lays the foundation for other and still more serious, though more chvonic diseases ; and in some, and more especially in the old and the unsound, it shows itself a very fatal disorder. The absolute mortality under the recent epidemic has been immense ; the daily newspaper obituaries have been unusually long; and you may have re- marked, that the ages of the persons whose deaths they announced were in almost all cases great. The funerals have been so frequent, that difficulty has been found m performing them without indecent hurry and confusion. One undertaker of whom I was informed had at one time seventy-five dead bodies to inter — above ground, a* he expressed it ; and mourning coaches and black horse* could not be procured in 544 INFLUENZA. sufficient numbers to meet the demand for them. The absolute mortahty, therefore, I say, has been enormous ; yet the relative mortahty has been smalL You will hear people comparing the ravages of the influenza with those of the cholera, and infer- ring that the latter is the less dangerous complaint of the two ; but this is plainly a great misapprehension. Less dangerous to the community at large (in this country at least) it certainly has been; but infinitely more dangerous to the individuals attacked by it. More persons have died of the influenza in the present year than died of the cholera when it raged in 1S32; but then a vastly greater number have been affected with the one disease than with the other. I suppose that nearly one- half of those who were seized with the cholera perished ; while but a very small fraction indeed of those who suffered, influenza have sunk under it. The only fatal cases that I have seen have been in persons advanced in life, or in persons whose lungs were previously known to be unsound. Now, the treatment of the influenza is pretty well understood. The chief risk of mistake is that of being too busy with the lancet. Certainly those affected by this disorder do not well bear active depletion. Of course no one would think of blood- letting except the symptoms were severe, and the distress great; but, even in such cases, much caution is requisite in adopting that remedy. If you find that the in- flammation has extended to the pleura, or to the substance of the lungs, it may be necessary to open a vein, or to apply cupping-glasses over the chest ; but this is a very unpleasant necessity. Such is the result of all that I have seen, and heard from others, of the present epidemic ; and such is the result of the recorded expe- rience of nearly all previous epidemics. You will find abundant evidence of this col- lected into a summary view by Dr. Hancock. In 1510, Dr. Short says bleeding and purging did harm. In 1557, bleeding was said to be so fatal, that in a small town near Madrid, two thousand persons died after it in the month of September. In 1580, Sennertus, after stating that, where blood-letting was omitted, the mortality was not greater than one in one thousand, adds, " Experientia enim lioc comprobavit, omnes fere mortuos esse quibus vena aperiebatur." Dr. Ash observes that, in 1775, it was never necessary to bleed at Birmingham ; and that, in a neighbouring town, three died who were bled, and all recovered who were not bled. And a great deal more evidence to the same purpose you may find in the article I have referred to. I believe the best plan of management — as far as any general plan can be laid down — is to keep the patient in bed, and, after clearing the bowels by a mild ape- rient, to give a couple of grains of James's powder every six hours, with a saline draught, and slops, till the first brunt of the disorder is over ; and then, if the cough be troublesome, and the breathing laborious, and much rhonchus, or sibilus, or crepi- tation, is audible in the chest, to apply a blister, and to give expectorants and diure- tics. What I prescribed a great many times was something of this kind : half a drachm of oxymel of squills, a drachm of the sweet spirit of nitre, and sometimes another drachm of paregoric, in almond emulsion. With respect to full doses of opium, when the feverishness is abated and the headache gone, I should recommend the same practice which I described in the last lecture. If there be any lividity of the skin, or of the mucous membranes, it is dangerous to give a full dose of opium. On the other hand, if there be no visible indication in the complexion that venous blood is circulating in the arteries, opium given at bed-time wall sometimes have a magical effect in relieving distress, and (by giving rest and refreshing sleep) in recruiting the strength also. In cases in which the powers of the system are pros- trate, and the face and lips are livid, and the patient is tugging to expectorate the mucus that is filling up his air-passages, you should have recourse to ammonia, to nourishing broths, and it may be to wine and water : and when all danger from the disease is over, but the patient remains feeble, languid, and out of spirits, then is the fit time to administer tonic medicines; and ahhough snake-root and cascarilla are well-spoken of by many practitioners, I know no tonics so good as the sulphate of quina, or of iron, for such patients. As to external applications, mustard poultices, blisters, and the like — and to the mhalation of the steam of hot water, — these may each and all be very useful ; but I HAY-ASTHxMA. 545 have nothing to add concerning the time and manner of their employment lo whcit I said upon the same subject in the last lecture. There is one pomt in the treatment which I must not omit to notice, although I cannot tell you much about it from my own experience. Dr. Thomas Davies, an accurate observer, and one well qualified to form a judgment in the matter, slates that he found a mercurial treatment answer well in severe cases, in the epidemic of 1833. He perceived that active depletion was not well borne, and discovering that in the bad cases there was always crepitation in the lower lobes of the lungs, he thought mercury was one of the most proper remedies to subdue the inflamma- tion, and to occasion absorption of the fluid eflbsed into the air-cells. He had severe cases to deal with. He says that it happened to be his duty to admit the patients into the London Flospiiai during the week the epidemic was at its height, and that thirty-two beds which were placed at his disposal were all soon filled with individuals labouring under the severe forms of influenza ; so severe, that he believed the greater number of them would have perished if they had been allowed to wander about the streets, or even to have remained at their own homes, with the insuflicient attention they could there have obtained. Onlytjue or two of these patients were bled, but they were all put under the influence of mercury. This treatment commenced on Thursday, and all who, by Saturday night, were affected in the usual way by the remedy, safely and gradually recovered, with the exception of two ; and one of these had hypertrophy of the heart, and diseased aortic valves. His object was not to salivate, but merely to make the gums tender. It was of course necessary that the action of mercury should be prompt; and he found that the most quick and effica- cious way of obtaining it was by rubbing in the llnimentum hydrargyri. There is another kind of catarrh described as depending upon a peculiar local cause, and therefore requiring to be briefly noticed. 1 have seen only one instance of it ; but it has b.'en observed and described by several medical men. Dr. Bostock, in the Medico-Chirurglcal Transactions, gives an account of this complaint as it is tipt to attack himself. It is called the calarrhiis xstivm, and by some the hay-fever, or the hay-asthma. In Dr. Elliotson's lectures, also, as published in the Medical Gazette, there is a good deal of curious information upon this malady, contained in letters addressed lo him from practitioners in various parts of the country, in conse- quence of some previous remarks he had made upon it in a clinical lecture, which had also been printed. Dr. Elliotson speaks of it as a combination of catarrh and asthma. It consists in excessive irritation of the eyes, nose, and the whole of the air-passages ; producing, in succession, itching of the eyes and nose, much sneezing occurring in paroxysms, with a copious defluxion from the nostrils ; pricking sensa- tions in the throat ; cough, tightness of the chest, and difficulty of breathing, with or without considerable mucous expectoration. This complaint afl:ects certain persons only, and in them it always takes place at ihe same period of the year, in the latter end of May, or in June, when the grass comes into blossom, or when the hay-making is going on. It seems, in fact, to be produced by some kind of emanation from cer- tain of the grasses that are in flower at that season, of the irritating qualities of which emanation some persons only, — and a very few persons in comparison with the en- tire population, — are susceptible. The disorder happens only at that one particulai season ; and it then attacks persons who are not remarkably subject to catarrh at other times, nor from the ordinary causes of catarrh ; and if they avoid meadows and hay-fields, and the neighbourhood of hay-stacks, they escape the malady. Hence going to the sea-coast, and especially to those parls of the coast that are barren of gia.';s, ofllers a means of protection ; and when this cannot be done, such persons ob- tain refuge, in some measure, from the cause of the irritation, by remaining wiihui doors, and shutting out as much as possible the external air, during the hay-crop. One lady, who suffered annually from this strange aflection, states that a paroxysm has been brought on by the approach of her children, who had been in a hay-field; and once this happened when the hay-season had been for some time ovt-r, upon iheir joining her at tea, after playing in a barn in which the hay of that yi?ar had been deposited. She was in the habit of flying to Harwich, or some other pan of 35 2 v 3 546 HAY-ASTHMA. the coast, as the dangerous season came on. On one occasion, \vhile walkino- on the shore at Harwich, she was suddenly attacked by the complaint, to her great surprise, as she was not aware of any grass being in the neighbourhood ; but the next day she discovered that hay-making was in progress upon the top of the cliff at the time she was walking under it. In another year, she being at Cromer, and an attack that she had suffered having quite subsided, and all the hay-making thereabouts being over, she was suddenly visited by the well-known symptoms, and on going into her bed-chamber, perceived that they were building a large stack of hay in a yard near the house, having transferred it from a field five miles distant. Very lately I was asked by Mr. Cheyne to see with him the wife of a stable-keeper near Regent street. I found her suffering under what is popularly called "a crying cold :" pain in the situation of the frontal sinuses, streaming eyes, sneezing and de- fluxion from the nostrils, and very urgent dyspnoea, which was accompanied by loud wheezing. Symptoms of this kind had come on, suddenly, some days before : and her distress was then so great, that her husband proposed to drive her in a gig to consult a medical friend of his who hved at Islington. On their way thither, every symptom disappeared, and she felt at once^quite well. She subsequently stayed a night or two, in comfort, with some relations in the city. Immediately upon her re- turn homf *he same symptoms recurred, with all their former severity, and resisted the means, adopted for their relief by JMr. Cheyne, who had now been called in. He was soon led to suspect the cause of the attack, and of its obstinac}'. There was a strong odour of hay in the house. The husband told him that his lofts were filled with a lot of hay which had recently arrived, and which had an unusually powerful smell. We learned that our patient was always worse at night, when the house was shut up ; and better in the morning, when a free current of air blew through the open windows. We advised a temporary change of residence : but our advice was not followed until two days afterwards, the disorder meanwhile continuing, and in- creasing in intensity. Then the patient removed to lodgings not one hundred yards distant ; and immediately all the catarrh and distress again ceased, and she passed a perfectly tranquil night. Afterwards she went into the country, and did not return till the odoriferous parcel of hay had been consumed, and a new stock laid in. She was however revisited by some slight cough, and occasional dyspnoea — neither of which troubled her much or long. Avoidance, then, of the ascertained source of the complaint is the best thing that can be recommended to these persons. You may read almost every year in the newspapers that one of our English dukes has gone to Brighton to escape the hay- fever. But it is not in the power of every one to leave home for that purpose ; and it has been found that the system is capable of being fortified in some degree against the pernicious effects of these vegetable effluvia. Mr. Gordon of Welton, in York- shire, had communicated some interesting observations to the profession on this subject, before those of Dr. Elliotson were published. You may find Mr. Gordon's paper in the fourth volume of the JMedical Gazette. He supposes that the aroma of the sweet-scented vernal grass, the anthoxanthinn odoratiim, is the principal exciting cause of the complaint. He found the symptoms more speedily and effectu- ally removed by the tincture of lobelia inflata, than by anything else that he had tried at that time; and he recommended the cold shower-bath as the best preservative against the attack. But in a subsequent communication to Dr. Elliotson, he states that the sulphates of quina and of iron given in combination, had proved completely successful in emancipating from their tormenting disorder the two patients, from whose cases he had principally drawn up his account; although they had, in spite of all previous treatment, suffered an annual return of it for fifteen or twenty years. The susceptibility of this troublesome affection of the mucous membrane, from a peculiar cause, which, to most people, occasions no uneasiness, app-ears sometimes to run in families : and this is nothing more than one might expect. Dr. Elliotson, thinking it possible that the chlorides which have the power of decomposing, and disarming of their noxious qualities, certain anj??Jo/ effluvia, might exert a similar control over the vegetable emanations that excite the hay-catarrh, ■•ug^gebted to one of the sufferers a trial of the chloride of lime or of soda. He CHRONIC BRONCHITIS. 547 desired him to have it placed in saucers about his bed-chamber : to have rags dipped in it and hung about the rooms of the house; to wash his hands and face witii it night and morning ; and to carry a small bottle of it with him to smell repeatedly in the course of the day ; and this plan gave so much relief, — either by destroying the emanations, or by lessening the irritability of the mucous membranes, — that it was tried in other cases; and, though it did not succeed in all, it did in most of them. Three patients out of four derived advantage from it. This expedient, therefore, is worth carrying in mind. There is another vegetable substance, better known to us, which produces in some few individuals symptoms like those of the hay-asthma ; I mean the powder of ipe- cacuanha. I recollect a servant employed in the laboratory of St. Bartholomew's Hospital, when I was a pupil there, who had the peculiar ill luck to be liable to this affection. Whenever that drug was under preparation, he was obliged to fly the place. This idiosyncrasy is not very uncommon. A very small quantity of the ipecacuanha dust is sufficient in such persons to bring on a paroxysm of extreme dyspnoea, wheezing, and cough, with singular anxiety and great weakness. The distress usually terminates by a copious expectoration of mucus. These effects of a powdered root, and of certain emanations from grass or hay, lend weight to the hypothesis which ascribes the influenza to subtle vegetable matter floating in the atmosphere. I would suggest a trial of the Respirator, as a defence against the particles of ipecacuanha, and against the volatile exciting cause (whatever it may be) of hay asthma. Catarrh is very often met with in a chronic form ; in other words, the mucous membrane of the air-passages is very liable to be affected with chronic inflammation. The accounts which you may read of this are exceedingly puzzling. Authors have endeavoured to draw nice distinctions between different species of chronic catarrh ; sometimes according to varying qualities in the matter expectorated : thus you have chronic mucous catarrh — /nVinVous catarrh — chronic pituitous catarrh — and dry catarrh, which, after all, is not dry, but only accompanied by less expectoration than some of the others ; and then again there is symptomatic catarrh. You will find all these enumerated by Laennec ; and the majority of writers since his time have trod- den with too submissive reverence in his footsteps. There are by no means such differences in the symptoms or in the proper treatment of the several varieties of chronic inflammation of the membrane in question, as to make these numerous sub- divisions of any practical utility. Chronic or moderate catarrh is often a sequel of acute bronchitis ; it is a very common accompaniment of disease of the heart ; it fre. quently arises during the course of the febrile exanthemata; it is seldom entirely absent in cases of continued fever ; and it is a form of complaint that is full of interest on this account, if on no other, that it has so often been mistaken, and is so liable to be mistaken still for tubercular consumption ; of which indeed it is very fre- quently the companion. The constant symptoms of chronic catarrh, or bronchitis, are cough, some short- ness of breath, expectoration of altered mucus. The t^an'rti/e symptoms, those which are oftentimes of the most importance, as determining the slight or the serious character of the disorder, consist in the quantity and quality of the matters expectorated, and the presence or absence of wasting, and of hectic "fever. You will continually be meeting with cases of tliis kind. A person advanced in years has what he calls a slight cold, in the winter. He coughs, and expectorates a certain quantity of gray or transparent mucus. In the summer his cough diminishes, or ceases altogether. The next winter the same thing happens again ; and each suc- cessive return of the colder seasons of the year brings back in increasing seventy the cough and the expectoration : and if you hsten to the breathing of such persons, while the cough is on them, you will find crepitation at the lower part of their lungs. Now these are examples, I beheve, of a chronic state of slight inflammation of the membrane,— or it maybe of passive congestion and effusion, — depending upon 1 548 CHRONIC BRONCHITIS. slowly advancing cardiac alterations. Peripneumonia nolha is very apt to super vene on this condition. But chronic bronchitis may take place at any age, as a sequel to the acute ; just as active inflammation of other parts of the body is liable lo degenerate into the chronic form ; and such cases are sometimes very equivocal and deceptive. Several years ago, a lady became my patient, having cough, expectoration of puriform matter, night-sweats, and diarrhoea. She had had hooping-cough a short time before ; but though the hooping, and other symptoms proper to that disease had ceased, she continued to cough, and to waste. Gradually she got thinner and weaker, her pulse became like a thread, and beat 120 times in a minute ; she took to her bed, the diarrhoea was scarcely restrained b}' astringents and opiates, and I thought she could not live a week. And, upon being pressed by her brother for my opinion, I said so. She had scarcely allowed me to listen to the s'ounds in the thorax : but I had once done so fairly, and I could find no morbid sounds, except at the lower part of the lungs. If I had trusted to that circumstance alone, I should have said that she had not tubercular consumption ; but I had not then so much faith in the indications afforded by auscultation, nor in my accuracy of ear in such matters, as I might have now; and I concluded that she teas dying of tubercular phthisis. Almost on the day, however, on which I ventured to give this prognosis, some slight amendment began : and she did gradually recover, and is alive and quite well at this time. Now it is in cases of this kind that cures are performed by those who boast of curing consumption. In truth, chronic bronchitis is, in some cases, as incapable of recovery, and as surely and progressively fatal, as tubercular phthisis itself; and even more so than some of the forms of phthisis. So long, however, as no organic change has taken place in the air-tubes, or in the mucous membrane lining them, these chronic forms of bronchitis that simulate phthisis in their general symptoms, are within the reach of cure. They are to be treated by counter-irritants to the chest — and by such measures as are calculated to relieve the most urgent symptoms. Opiates for cough, or for diarrhoea. Sometimes the patients bear steel well, and then it is almost sure to have a beneficial effect. Sometimes sarsaparilla appears to do good ; but, as far as I have observed, one of the most effectual restoratives in these cases is to be found when the weather and the strength permit, in frequent change of air and place ; in gentle gestation in a carriage, or in a boat ; and in a nourishing but bland and un- stimulating diet. When the membrane, and the tubes which it lines, become alterca in structure, and pour forth a fluid which has all the qualities of pus, hectic fever generally is present, and the chronic disease tends, slowly perhaps, but surely, to death. There are certain cases af chronic bronchitis which are especially remarkable, on account of the great abundance of the bronchial secretion : so great that the patients appear to die principally from the daily exhausting drain thus made upon the sys- tem. There are sometimes no other evident signs of inflammation; so that, as Andral observes, one might be led to separate these fluxes from the truly inflamma- tory afflictions. They differ from them, apparently, in their nature, and certainly in the treatment which they require. Andral has detailed two or three instances of this kind in his C/inique Medicale. The patients expectorated every day large quanti- ties — a pint or more — of frothy fluid, resembling weak gum-water in colour and con- sistence. They had no fever ; neither frequency of pulse nor heat of skin ; but they were exceedingly pale, like persons blanched by hemorrhage, and their emaciation and weakness were also extreme. Ver}^ little appreciable deviation from the healthy state was detectible when the lungs and heart were examined after death. It does occasionally happen that even larger quantities — three or four pints daily — are, for a considerable period, spat up, without much wasting. Andral asks, whether, in such cases as these, which certainly occur, though they are not very common, the first indication of treatment should not be to check and diminish the excessive bronchial secretion ; to treat it as you might treat a gleet of the other mucous membranes, with balsams, administered either by the stomach, or ;n the shape of vapour. He conjectures that it might have been in cases of this CHRONIC BRONCHITIS. 549 nature that the vapour of tar, and tar-water, were once thought to be so useful. Probably the creasote would be well adapted to such cases. Certainly I have seen the excessive expectoration diminish, and the patients gain strength, under the use of the balsams ; the compound tincture of benzoes, for example ; a form of medicine much emploj'ed formerly, and too much neglected, I apprehend, at present. [Balsam Copaiba will be found a very valuable remedy in these cases. — C] Another remedy, from which I have derived great advantage in some cases of the same kind, is the sulphate of iron, given in two or three-grain doses, in the compound infusion of roses, thrice daily. When there is any fever present, these remedies are apt to augment it : but when the pulse is quiet, and the skin cool, 1 am quite sure that they are often of the greatest service ; and this you will find to be the opinion also of various practical authors. There is another very remarkable condition of the pulmonary mucous membrane, constituting also, I imagine, a species of chronic inflammation, and characterized chiefly, Hke the last, by the matters expectorated. I mean that state in which a firm substance, resembling a false membrane, forms in the smaller bronchi and their rami- fications, and is coughed up, from time to time, in fragments. I mentioned in a former lecture that the false membrane of croup sometimes descends a long way into the bronchi ; even to their extremities. But I am speaking now of a different and less acute form of disease, in which, the trachea being unaffected, concrete masses, evidently moulded in parts of the hollow bronchial tree, are ^pat up ; somewhat like bunches of worms, or the roots of a small plant. This I presume to be uncommon ; for I have met with it twice only in my life. It has been described, however, by several observers. The first, Dr. Warren, has a paper upon it in the first volume of the Medical Transactions, where he gives representations of the substances coughed up, which he calls bronchial polypi. Dr. Paris has told me that a patient of his coughed up considerable qiaantities of these branching casts of the ultimate air- tubes, now and then, for a long period. An interesting paper of Mr. North's, on the same subject, was read at one of the evening meetings of the College of Phj'sicians. That gendeman possesses some beautiful specimens of these miscalled polypi. Dr. Carswell gives a figure representing them. When the affection is extensive, it is attended with great distress, and dyspnoea, and violent fits of coughing; and the symptoms are wonderfully calmed upon each expulsion of the solid matter. The surprise is that such patients should ever recover ; but I have never heard of an instance in which the complaint proved fatal. The two examples of it which have fallen under my own observation, were invested, bj'' the circumstances attending them, with a peculiar interest. They occurred, within less ?han a twelvemonth of each other, in the persons of two brothers, of middle age, the one a barrister, the other well known to you all as one of my most valued colleagues in this place. Both of them were, and are, remarkably stout, strong, and healthy men. In both cases the expulsion of the so-called polypi was preceded by haemoptysis, which came in considerable gushes, and was repeated at intervals of a few days, until the sohd matters began also to be expelled, and then hemorrhage soon subsided. The barrister, after having been annoyed for nearly a year by some huskiness of the voice, spat up, all of a sudden, a small quantity of bright blood ; and soon after- wards expectorated several ramifying masses of tolerably firm consistence, resembling fibrinous coagula of blood, deprived of most of its colouring matter. Some of them, which I saw and examined, were solid ; others, I understood, were hollow. I found slight circumscribed crepitation in the lower and posterior part of his left lung. This trivial degree of hoemoptysis, with the expulsion of what looked like casts of the inte- rior of a bronchial tube, was once or twice repeated within a few days. He had no fever — no dyspnoea. Mercury, inter alia, was prescribed; but as the patient did not feel in any way ill, I befieve he soon became tired of physic, and of medical restraint. Whenever I have since seen him, he has appeared to be in perfect health. Of the professor's illness I saw more. In the midst of health which had been ^ 550 CHRONIC BRONCHITIS uninterrupted, save by a solitary fit of the gout some years before, he also sj/at some mouthfuls of florid blocd. He had no cough, but the haemoptysis was accompanied by a rattling sensation in the right side of his chest. For about three weeks he continued, at intervals varying from three to six days, to expectorate blood in gushes. The smallest quantity brought up on any one occasion \vas two ounces ; the largest, eight. Just above the right nipple, the respi- ratory murmur was mingled with large crepitation, Avhich was always sensiblj- increased, and quite perceptible by the patient himself, during the attacks of he- morrhage. In the intervals between them his breathing and his pulse were per- fectly tranquil and regular. With the florid blood came up, in general, some black coagula : and at the end of three weeks, or thereabouts, in these black masses, ragged shreds of a difleren*. and firmer material began to be visible : and presently afterwards, complete branch- hke casts of the ramifying air-tubes were expelled ; and the bleeding ceased. Of these casts tiiere'were two kinds; the one solid, somewhat coloured, evidently fibrinous, and resembling the branching coagula that may sometimes be drawn out of the arteries in the dead body ; the other white, membranous, tubular, but rami- fying also. None of them were of very firm consistence. Till these substances made their appearance, our anxiety about the patient was extreme, and he underwent some rigorous discipUne at our hands. He was con- fined to bed, forbidden to speak, kept strictly to the slenderest slop diet, several times bled, and extensively blistered. Lumps of ice were given him to swallow, and pounded ice was applied to his chest whenever the blood broke forth afresh. He took mercury till his gums were tender, and afterwards the acetate of lead, and other reputed styptics. To most of this I was a consenting party ; but, looking back upon the case now that its nature and resuk are known, I must confess that the treatment, though fairly justifiable at the time, was unnecessarily active. Mr. North, in the paper to which I have alluded (you may see it in the twenty- second volume of the Medical Gazelle), draws a distinction, of which he gives the credit to Dr. Cheyne, between the hollow, membranous concretions, expelled without any blood ; and the sohd branching masses which accompany or succeed haemopty- sis, and are obviously mere coagula of blood moulded in the smaller air-tubes, where it had stagnated. He points out the comparatively harmless character of the cases in which the first occur; and the far more serious import of the second : the hemor rhage denoting the presence of some organic mischief within the thorax, and the " polypous concretions" being simply an accident of the hemorrhage. I doubt the accuracy of this distinction. The brothers of whom I have spoken continue to be, as they were before, free from any symptom or suspicion, either of cardiac or of pulmonary disease. Moreover, in hasmoptysis depending upon tuber- cles in the lungs, or upon organic disease of the heart, these concretions are very rarely observed. I have never seen them in such cases, conimon as such cases are. The barrister had a husky voice, and the professor was noticed to have been often " clearing his throat" for some time before the first eruption of blood : from which cnxumstance I infer a previous unhealthy state of the mucous membrane. Upon the whole I incline to the "iews expressed by Dr. Todd, with whom I had the advantage of consulting in the latter case — that a chronic and limited inflammation of certain of the bronchial tubes first occurred ; disclosing itself by no marked symptoms, but leading to the formation of tubular membranes : that, after awhile, these membranes began to be detached : that hemorrhage resulted, and continued till the separation was complete : and that, at the same time, some of the extra vasated blood coagulated in, and took the shape of, the air-tubes, and was afterwards expectorated. I understand that the barrister has since had a recurrence of this strange complaint, which he treated very lightly, and soon got rid of. He entertained a fixed belief that his attacks were attributable to the presence of v»ne of Dr. Arnott's stoves, in his chambers ; the heated atmosphere of which always produced a slight feeling of constriction and distress within his chest. Whether this notion be well or ill founded I cannot pretend to say : but it is curious that the MORBID ANATOMY OF THESE AFFECTIONS. 551 j>rofessor also had been using a similar stove, which, placed in his siLling-ioom, warmed both it and his bed-room adjoining. A word or two, before we separate, as to the morbid anatomy of these tissues. Chronic inflammation of the aerial mucous membrane may lead to changes in its colour; or to thickening of the membrane; or to ulceration; or to dilatation of the bronchi, and their ramilications. And it is proper that you should be informed re- specting these morbid conditions. In general, when chronic inflammation has existed during life, the mucous mem- brane is found to be red : but it is not a bright redness ; it is rather a livid, or violet, or brownish tint. And what is very curious, in some instances in which all the symptoms of inveterate bronchitis, with pwiform expectoration, had been present, the inner membrane of the air-passages has been found scarcely rosy — or even per- fectly white — throughout its whole extent. Of course we are not to infer from this that there has not been injlummation ; for the same thing is known to occur in the intestinal mucous membrane, in that of the bladder, and even in serous membranes. Where pus is poured forth there must have been inflammation. One effect of inflammation, as I formerly showed you, is a softening of the mem- brane ; but this is a much less common result of inflammation in the mucous mem- brane of the bronchi, than in that of the digestive organs. In regard to ulceration likewise there is a great difference between the two mucous surfaces : in that of the air-passages it is comparatively rare. ■ Thickening of the mucous tissue occurs also in various degrees : but the most remarkable change undergone by the membrane, and the tubes which it lines, is the dilatation of those tubes, and the consequent alteration of the membrane, which expands with them. There are two or three varieties of this dilatation. In the first of them, one or more of the bronchi present, throughout the whole or the greater part of their extent, an increase of capacity more or less considerable : so that tubes which result from the fourth or fifth, or even sixth division of the principal bronchus of each lung, may equal or exceed in diameter that bronchus itself. Tubes that ought not to be bigger than a crow-quill may become as large as the finger of one's glove. Sometimes this kind of dilatation is seen in a single branch only, sometimes in many. It may affect the bronchial ramifications of an entire lobe. It is more common in the branches of a bronchus than in the bronchus itself. It is not very easy to explain the manner in which this sort of dilatation is pro- duced. We might attribute it to simple distension of the bronchial parietes, were it not that these parietes are at the same time thickened, and the circular fibres hyper- trophied, as you may see in this preparation, and in Dr. Carswell's plate. But there is another form of bronchial dilatation to which the explanation just adverted to is easily applicable. Instead of the uniform dilatation of one or more bronchial lubes, throughout their whole extent, we find a bellying, or globular expansion, at the ex- tremity of one of them ; and the walls of the tube, instead of being thick and hyper- irophied, are wasted, and in a state of atrophy. The tissues composing the tube are often so thin, that when the cavity, for such it must be called, is laid open, the colour and structure of the pulmonary tissue may be seen through them. These cavities are generally found filled with a thick, tenacious, straw-coloured, muco-purulent fluid. Now it is easy to conceive how " the straining influence of repeated paroxysms of coughing" may cause dilatation of this kind. The primary branches are more easily cleared of the mucus that fills them: but the pressure which the lung undergoes under a forced expiration, operating on a portion of the same kind of nmcus detained in the smaller branches, may be more than the elasticity of the tube is capable of resisting. And, in fact, all dilatations of the bronchial tubes must be, in part at leasl, owing to the same influence of centrifugal pressure by imprisoned mucus. The) are seldom met with except after those affections which are characterized Oy con siderable secretion from the membrane, and by much and repeated cough : as after some forms of chronic bronchitis, and after hooping-cough. A third variety of dilatation is that in which the same bronchus bellies out in dif 552 HOOPING-COUGH. ferent plucjs ; is dilated at intervals ; so as to present in its course a series of sutccw- sive enlargements and contractions. Here, again, the walls of the bronchi, thouo-h they may be traced in the parts dilated, do not appear to be thickened, but rather are diminished in thickness. We may suppose, therefore, that these small partial dilatations of the bronchi may result from mechanical distension, by mucus, in those places which offer the least resistance ; either on account of diminished elasticity, or of actual thinning. This variety of dilatation is more frequent in children than ia aduks. In whatever way the dihtation may take place, one of its obvious and necessary consequences is, the condensation of the pulmonary substance around the dilated tube, the obliteration of some of the cells, and a proportional abridgement of the func- tion of the lung. According!}^, when it is extensive, dilatation of the bronchi is attended with habitual dyspnosa. But the most important consideration arising out of this state of the bronchi, is this ; that the signs, both general and physical, by which it is accompanied, are apt to be exactly those which are most distinctive of phthisis. And it is on that account that I have now described these changes. I shall revert to them ao-ain when I come to the symptoms, revealed by auscukation, of tubercular disease of the lungfs. LECTURE L Hooping-covgh: symptoms; duration; complications; pafhology ; treatment. Fnewnonia : its stages and morbid anatomy ; auscidtatory signs. I HAVE yet to consider one very important disorder, which is usually classed among the catarrhal aflections, but which is marked by features so peculiarly its own, as to distinguish it effectually from every other form of disease. I allude to hooping- cough ; a remarkable complaint, well known everywhere, I believe, and much dreaded by parents. It has received a variety of names : chin-cough ; kinkhoast ; coqueluche ; tussis convulsiva ; tussis ferina ; and pertussis. This last name, which Sydenham bestowed upon it, and which was adopted by Cullen, is the technical appellation of the disease in this country, as hooping-cough is the popular. The phenomena that characterize hooping-cough are, I say, remarkable. It begins with the symptoms of an ordinarj' catarrh arising from cold. The child (for it is most especially a disease of children) has coryza, and coughs ; and mothers and nurses are aware that the disease commences in this way, and express their appre hensions lest it may turn to the hooping-cough. After this, the catarrhal stage, has lasted eight or ten days, or a fortnight, or sometimes a day or two longer, that kind of cough begins to be heard which is so distinctive. It comes on in paroxysms, in which a number of the crpiratory motions belonging to the act of coughing are made in rapid succession, and with much violence, without any intervening inspirations; till thi little patii'nt turns black in the face, and seems on the point of being suffo- cated. Then one long-drawn act of i;jspiration takes place, attended with that pecu- liar crowing or l)t)()[;ing noise, which denotes that the rima glottidis is partially closed, and which gives tin; disease its name. As soon as this protracted inspiration has been coinpleted, ilic ^^cries of short expiratory coughs, repeated one innnediaiely after the other till all the air appears to be expelled from the lungs, is renewed ; and then a second sonorous L:'.rk-draught occurs; and this alternation of a number of expiratory coughs, with one shrill inspiration, goes on, until a quantity of glairy nuicus is forced up from the lungs, or until the child vomits, or until expectoration vnd vomiting both take place at once. During the urgency of the paroxysms, the face becomes swelled, and red or livid, the eyes start, the httle suffi^rer stamps some- times with impatience, and generally clings to the person who is nursing him for support, or lays hold of a chair or table, or of whatever object may be near him. to HOOPING-COUGH. 553 diminish (as it would seem) the shock and jar by which his whole frame is shaken. As soon as expectoration or vomiting have happened, the paroxysm is over. The child may pant a little while, and appear fatigued ; but commonly the relief is so complete, that he returns immediately to the amusements, or the occupation, which the fit of coughing had interrupted, and is as gay and lively as if nothing had been the matter with him. When the fit terminates by vomiting, the patient is in general seized immediately after with a craving for food, asks for something to eat, and takes it with some greediness. Each paroxysm may consist of several alternations of the gasping coughs, and the characteristic hoop or kink; but CuUen remarks, that the expectoration or vomiting usually takes place after the second coughing, and puts an end to the fit. The number of paroxysms that occur in the twenty-four hours is variable also; and they come on at irregular intervals. When the complaint is uncomplicated, the child, during the intermissions, appears to be quite well. This is another striking feature of the disorder. In the earlier paroxysms the mucus expelled is scanty and thin ; and in proportion as this is the case, the fits are the longer and the more violent. By degrees the expectoration becomes more abundant ; and sometimes it is very copious : at the same time it is thicker, and more easily brought up ; and on that account the fits of coughing are less protracted. The ordinary duration of the disease is from six weeks to three months; but it ma}^ run its course, I believe, in three weeks ; and it may continue for six months, or more. In an uncomplicated case, if 3'ou listen at the chest during the intermissions, you will probably hear the sounds that are proper to catarrh — some degree of rhonchus or sibilus : and in many parts there may be puerile respiration ; and if you percuss the thorax, you get the natural hollow sounds. But what happens when you apply your ear to the chest during the paroxysms of coughing? Why, the information given us in this case by auscultation is very curious. You may perhaps hear, be- tween the short explosive shocks of the cough, some snatches of wheezing, or of vesicular breathing ; but during the long-drawn noisy inspiration that succeeds, all wllhin the chest is silent. This is supposed to result from the slow and niggardly manner in which the air passes towards the lungs through the chink of the glottis, which is spasmodically narrov/ed. It may also depend, in part, as Laennec sup- posed, upon a spasmodic condition of the muscular or contractile fibres of the bronchi and their branches. When the fit is at an end, the ordinary sounds of healthy, or of catarrhal respiration, are resumed. Children are very susceptible of this complaint ; and it is a complaint which spreads by contagion. Hence it follows that kw children escape an attack of it. It is also one of those contagious maladies which do not in general affect the same individual twice ; and hence again it follows that it is rarely met with in adults. Such is the fact ; and such, I apprehend, is the explanation of it. It is not that adults are insusceptible of hooping-cough; for adults that have not had it during their child* hood are readily afii^cted when exposed to the contagion. But it is that the disorder, with very few exceptions, protects the system somehow from its future recurrence ; and that most adults have had it when they were young, and for that reason do not take it afterwards. During the very early periods of infancy, i. e., within the first two or three months, hooping-cough is said to be rare : I mentioned a case, however, before — and I have read of others — in which the disorder appeared to have been contracted before the patient was born. My bed maker's daughter in Cambridge had a child ill with hooping-cough in the house with her during the last weeks of another pregnancy, and the new-comer hooped the first day he came into the world. As long as this disease is uncompHcated — unmixed with inflammation, and there- fore unattended with fever, or only with that slight inflammatory condition proper to mild catarrh — it is not at all a dangerous disease. Probably it will, under the most favourable circumstances, run a certain course. By degrees the violence and the frequency of the paroxysms diminish ; they occur only in the morning and the eve- ning, then in the evening alone, and at length they cease altogether. But for ?orrve 2 vv 554 HOOPI.XG-COJGH. time after the disorder has apparently come to an end, if the child takes cold, and gets a cough, it is apt to assume a spasmodic character, and to be attended with a hooping noise in inspiration. Unfortunately hooping-cough is, in a great many cases, not simple — not uncom- plicated. It becomes mixed up with other kinds of disease in the chest, or in the head. In the chest, severe bronchitis supervenes upon it, or inflammation of the substance of the lungs ; and then fever is lighted up, and permanent dyspnoea is pre- sent. When the disorder has been long drawn out, and has at last terminated fatally, dilatation of the bronchi, such as I described in the last lecture, is often found upon dissection ; or, still more commonly, I beheve, what is called emphyzema of the lungs — a change which I have yet to bring before you. That such effects should follow such violent and continued efforts of coughing, is no o-reat matter for wonder. Neither can we be surprised that the disease frequently leads to cerebral disorder. During the fits, there is a great and visible determination of blood towards the head, or rather a detention of the blood in the veins that pro- ceed from the head ; — passive mechanical congestion : the transmission of the blood throun-h the lungs being obstructed, and its return from the head being interrupted. Hence, the face becomes turgid, the eyes are prominent, the superficial veins full and projecting, the lips and cheeks turn livid ; sometimes hemorrhage takes place from the nose or ears, or the eyes become blood-shotten, or the patient actually falls into convulsions ; nay, apoplexy is occasionally the result of the straining ; and when life is not thus suddenly cut short, chronic mischief is apt to be set up in the brain, and the child ultimately dies hydrocephalic. All this is the more to be feared in proportion as the child is the younger. Head affections are particularly to be dreaded in scrofulous children ; and in any children during the first dentition. When the disease occurs within the first two years of life, it is usually attended with convulsions : and many more die within that period than afterwards. And CuUen's remark is undoubtedly true, that the older children are, the more secure they are, cscteris paribus, against an unhappy event. Hooping-cough may be complicated also with a disordered condition of the bowels ; and with infantile remittent fever. This complication is more accidental, and less a consequence of the hooping-cough than the former ; but it may very materially add to its peril. Dr. CuUen was of opinion that the complaint may exist in even a milder forn?. than that which I have called simple hooping-cough. He thought he had seen " in- stances of a disease, which, though evidently arising from the chin-cough contagion never put on any other form than that of a common catarrh." Others again believe that adulLs may have it without hooping. But all this seems to me very doubtful Catarrh is an exceedingly common malady ; and I should be slow to consider any case a genuine case of pertussis, unless the characteristic paroxysms of coughing, and the stridulous inspiration, were present. Divers opinions have been held respecting the seat, and respecting the nature, of hooping-cough. Some supj)ose it to have its seat in the brain ; and that it is essen- tially a spasmodic disease. Others maintain that it is situated in the air-passages of the lungs, and that it is always an inflammatory disorder. I do not pretend to strike the balance between these conflicting judgments. Certainly the simple form of the disease is often unattended with any appreciable fever: and that is a strong ground lor believing that its peculiar phenomena are not necessarily connected with inflam- mation. They who have ascribed the complaint to a morbid condition of the brain have deduced that opinion, I presume, from the cerebral symptoms that are some- times so plainly marked in hooping-cough. But these symptoms are oftener, to all appearance, the consequence, than the cause, of the paroxysms of coughing. I would suggest it as an interesting point for your future inquiry, whether the pathology of hooping-cough may not receive some elucidation from the researches of the late Dr. Ley, respecting the crowing inspiration of infants. You remember his suggestion, that mere inflammation of the mucous membrane of the air-passages might cause swelling of the absorben" glands of the bronchi or of the neck. This is a circum- iiance which I have myself long thought probable, from having found enlargement PATHOLOGY. 555 of the cervical glands springing up during the existence of pulmonary irritation. Take notice that the spasmodic fits of hooping-cough are always preceded for some days by mere catarrhal symptoms. Observe further how the parts supplied by the pneumogastric nerve are affected in these paroxysms : the larynx, the lungs, the stomach. This conjecture, that the crowing inspiration of infants, and the crowing inspiration of hooping-cough — though quite distinct affections — may both depend upon irritation of the recurrent nerve, or of the pneumogastric nerve generally; and that even the irritation might in both cases arise out of enlargement of the glands that lie in the course of that nerve: this natural conjecture had presented itself to Dr. Ley's mind ; for, towards the end of his book, 1 hnd this note : — "Recently foui children have been brought to my house, labouring under hooping-cough. In all, ths; glandulcB concatenatas near the trachea were very considerably enlarged. Is this (he says) merely an accidental combination ? or is there any essential connection between the two ? May it not be that an enlargement of these glands, from a specific animal poison, similar to that of the parotid glands in mumps, is, after all, the essence of hooping-cough ? The subject at least deserves inquiry, and further observation." In corroboration of this conjectural view of what may ultimately prove to be the true pathologj' of hooping-cough, I may remark that among the morbid appearances described as being met with after death from that disease, "an unusual swelling of the bronchial glands" is set down. It is also stated, by some of the Germans, that that portion of the pneumogastric nerve which lies in the cavity of the chest has been sometimes found red. Yet I should lay no stress upon this ; for others have asserted that they have looked in vain for this redness : and even supposing it to exist, it is no sure or safe token that there had been inflammation of the nerve. The nerve, all things considered, would be likely to become tinged of that colour soon before, or even after, death, from the gorged condition of the lungs. In some cases, as you may well believe, serous fluid is met with in the ventricles of the brain, or in the meshes of the pia mater: in others the consequences of inflammation are traceable in the bronchi, the lungs, or the pleura. Portions of what is called hepatized lung are not unfrequently seen in the fatal cases. [The leading opinions in relation to the pathoIog:y of hooping-cough, may be referred to one or other of the following heads. 1st. With some the disease is essentially a spasmodic affection of the air-passages, arising from a primary irritation, inllammatory or nervous, of the brain, or of one or oth'er set of the respiratory nerves. This theory, variously modified, is that advocated by Hoffmann, Cullen, Hufcland, Jalin, Lobel, Holzhansen. Leroy, Coitcr, Guibert, Breschet, Gardien, Bauer, Albers, Clarus, Webster and Copland. Dr. Webster considers the affection of the respiratory organs as secondary, and dependent on a primary inflammatory irritation of the brain or of its membranes, or of both. JMost of the ailvocates of the nervous theory regard the pneumo- gastric nerves as the primary seat of the aflection ; others, however, locate the irritation in tbe phrenic nerves — the principal of these are Jiiger, Lobensteiii, Lobel and Leroy; others again, as Albers, of Bremen, Pinel, Laennec, Blache and Roe, refer the irritation to both the mucous membrane of the bronchi and the pneumogastric nerves. 2d. Others consider the disease as an inflammatory affection of some part of the mucous membrane of the air-passages ; this opinion numbers among its advocates, Darwin, Watt, Mar- cus Alcock, Dewees, Dawson, Pearson, Guersent, Fourcade-Prunet, Boisseau, Brpussais, Rostan, and Dug^s. Dr. Watt believed it to be "in all cases, an inflammatory, whose chief seat is in the mucous membrane of the larynx, trachea, bronchi, and air-cells, jjossibly at- tended with a minute exanthematous eruption there.' He considers that, when mild, '-this inflammation runs its course witboat materially disturbing the other functions of the body, or even the functions of that very membrane in which it is seated, and that whenever hooping-cough proves dangerous or fatal, it becomes so by the degree of inflammation in the natural seat of the disease, or by that inflammation extending or being translated to other parts.' Most advocates, however, of the inflammatory origin of the disease, limit the in- flammation to the trachea and bronchi — Dawson confines it, at first, to the larynx, or. strictly- speaking, to the glottis — an opinion, by the way, not widely differing from that of Astrue, who of old describes the disease as an " inflammation of the superior part of the larynx nnd I'harynx." 3d. Many view the complaint as at first inflammatory, and afterwards spasmodic, or a-, a specific inflammation of the respiratory mucous membrane combined with irritation of th« respiratory nerves, in consequence of which the muscles to which these are distributed are thrown into spasmodic action, which irritation continues after the inflammation lias ceased. 556 HOOPING-COUGH. This (loctiinp, vavionsly modified, is a favourite one with the writers on hooping-cough.— Desrnelles makes the di.-^ease to consist in a primary inflammation of the bronchi, compli cated with a consecutive cerebral irritation, vhicli by its influence over the diaphragm and other res})iratory muscles, and over those of tne larynx and glottis, changes the simple cough of broncliiiis into one of a convulsive character. This opinion is the one adopted, also, by Dr. C. Johnson in his able article on hooping-cough in the Cyclopxdia of Practical Medicine, (^Philadelphia Editio7i, vol. 2, page 453 :) other writers who admit the occasional presence of cerebral disease, consider them to be invariably secondary to the bronchial aflxjction: of thi? opinion are Boisseau, Begin, Otto, and Vondembush. 4th. By not a few, especially of the older medical writers, hooping-cough is referred to an irritation of the stomach and lungs. — Rosen, who supposed the disease to be produced by either an insect or a morbid poison, partly inhaled into the lungs and partly swallowed with the patient's saliva, considered that the stomach suffered more from the irritation than the lungs. Daiiz believed that the irritation is seated primarily in the stomach and bowels, the ofi'ection of the respiratory organs being secondary — this ojjinion had been previously ad- vanced by StoU, and is also that advocated by Chambon in his work ^^ Des Maladies del E7ifans.'" Tourtelle likewise describes the disease as a catarrhal aflection of the limgs and stomach (ajjhlion piieumogastrique pituiteuse). Millot entertains a somewhat similar opinion; he supposes, however, that the irritation of the stomach is secondary, and not so intense as that of the lungs and larynx. Opinions somewhat similar are maintained by Mel.zer, Hoi defreund. Butler, Klinge and Strack. 0th. The peculiar phenomena of the hooping-cough have been ascribed, by a few, to a physical or chemical irritant introduced into the larynx, either from without or after it has been engendered in the blood, or in the secretions of the respiratory organs. Under this head may be arranged the opinion of Linnaeus, who referred it to the presence of minute insects; that of Sydenham, who imputed it to a subtle and irritating vapour in the blood which affected the lungs, — that of Bohme, and Klinge, and also, partially, that of Rosen, who ascribed it to a peculiar miasm, acting chiefly on the nerves. Dr. Bland, of the Hos- pital Beaucaire (Revue Medicale. March, 1S31), considers the primary cause of hooping-cough to consist in an irritation, not inflammatory, of the mucous membrane of the bronchi, vmder which the glands and follicles of the membrane pour forth a specific secretion saturated with hydrochlorate of soda, the irritation caused by which, when it reaches the upper part of the trachea and larynx, throws the muscles of the glottis and of respiration into spas- modic action for its expulsion, in a manner exactly similar to any foreign body which acci- dentally enters the larynx. This theory of the disease Jlr. Streeter. of London, in a paper read before the Physical Society of Guy's Hospital, November, 1844, has adopted and zeal- ously advocated, "as the one most consistent with the i^henomena observable in the symp- toms, pathology, and successful treatment of the disease," Mr. Streeter regards, however, the primary affection of the bronchial membranes as in- flammatory, and believes that it will be found, on careful observation, to be attended by more or less fever of an analogous character to that which attends the influenza. The evidences of the truth of this theory upon which this gentleman places reliane are — " the testimony of adults, who have been attacked by the disease, to the unusual and ex- cessive saline taste of the expectoration so long as the paroxysms are severe — the resem- blance of the expiratory eflbrts in the hooping-cough to those made by the excito-motory system for the expulsion of a foreign body from the larynx — the very adequate explanation it affords, both of the extraordinary and spasmodic muscular actions which accompany the cough, and of its occurrence in paroxysms after intervals of uncertain duration — and, lastly, the key which it furnishes to the chaotic host of apparently opposite remedies that have ob- tained professional or popular reputation in its treatment. Of these remedies, we find one group jidapted to lessen the original bronchial aflections, and favour the expulsion of the offending mucus — as emetics, antimnnials, and counter-irritants applied over the chest; an- other which acts by altering the quality of the secretion, as the alkaline carbonates, ammo- nia, and sulphurct of potass, so strongly recommended by Dr. Blaud himself; another, by exciting a new action in the bronchial membrane, and, by constringing the vessels, to put a sto[) to the secretion, in a manner perfectly familiar to the physician in chronic bronchitis, and to the surgeon in purulent ophthalmia — as the super-acetate of lead, alum, common resin, tine, cantliarid., bals. copaiba, tar vapour, and even the inhalation of nitrous vapours, &.O. Other?, again, as musk, both native and artificial, camphor, arsenic, conium, belladonna, ojnum, and hydrocyanic acid, are more especially adapted for the nervous, lesions ; while antiphlogistic measures meet the inflammatory lesions of the third or complicated stage. "When, he remarks, the convulsive hooping is fully established, it very commonly hap pens that sympioms which mark the third, or what may be appropriately termed the com. plicated stage, are developed, and continue to mark the varying and formidable phases of the disease which mostly attract attention in practice." These tertiary phenomena usually nianifest themselves " 1st — as special lesions of the nervous and muscular systems — An rxalted sensibility and morbidly susceptible state of the membrane of the larynx the pha HOOPIKG-COUGII. 557 rynx, the epiglottis, under which death from asphyxia may suddenly occur — Slorbid associa- tion of the action of the muscles of the glottis and respiration, in consequence of which the cough continues from mere habit, or is reproduced by the most trivial irritation of the air pas.'^ages — reflex irritation often passing into inflammation of the nervous centres of the pneumogastric nerves, involving those of the phrenic nerves also ; and, finally, these reflex afii-'ctions may extend to the whole of the brain, or to the medulla oblongata and theil meninges, and prove fatal by inducing general convulsions or hydrocephalus. All these, h^ it observed, are pathological conditions of the nervous system which have been so constantly put forward in high relief, by the advocates of the nervous theory, as proximate causes of the disease itself" A second class of tertiary phenomena include "the various congestive and inflammatory affections that result from the mechanical disturbance of respiration and circulation, and the extension of the primary bronchial inflammation to the trachea, larynx and pharynx, and to the tissues of the lungs themselves. Epistaxis, hasmoptysis, and fatal emphysema from extensive rupture of the air-cells, have occurred within my own expe- rience, and have apparently resulted from the mechanical Ariolence of the cough acting upon tissues previously weakened by disease." A third class of tertiary phenomena " include fever and cachexia," which are "present in individual cases in every conceivable variety of combination." — " In the absence of cerebral or pulmonary inflammation, the fever of the third stage is always asthenic, and oilen assumes a remittent type when the cachexia is of a marasmic character." For an account of tlie various lesions met with in the bodies of those who die of hooping- cough, the reader is referred to Coiidie on Diseases of Children, page 327. — C] The object of rational treatment in hooping-cough, supposing the disease to be simple, is to kef!]) it simple : to keep it mere hooping-cough : to obviate serious inflammation or mischief in the chest and head : and, if possible, to mitigate the severity and shorten the duration of the fits of couohing. I have no notion that anything we can do in the beginning will materially abridge the duration of the com- plaint as it appears in its unmixed form. It tvi/l, I say, in all probability, run a certain course ; and our business is to conduct it evenly and safely to the end of its course. For this purpose the diet must, in the first place, be regulated and reduced. The child should not be allowed to eat meat: the bowels should be kept moderately open ; and the patient in cold weather should be confined to the equable tempera- ture of the house, or protected by warm clothing. You will find different persons employing and praising different plans of treatment; the object in all cases, how- ever, being the same, viz., to ward cjf injlumviation and to quiet irritation. One very good plan, as I believe, is that of giving a grain, or a grain and a half, of ipeca- cuan, three or four times a day. This generally keeps the bowels sufficiently open, and seems to have a beneficial operation on the mucous membrane of the air-pas- sages also. Or a few grains of rhubarb and ipecacuan may be given every night : and if the cough be very troublesome and urgent, small opiates may be administered : syrup of poppies : or the extract of hyoscyamus ; as many grains per diem as the child has years. There is a method recommended many years ago by a namesake of mine, which some people swear by. Sir William Watson's prescription was one grain of tariarized antimony and twenty drops of laudanum in an ounce of water. A. teaspoonful, or a dessertspoonful, of that mixture was given every evening, or every other evening. I have heard the late Dr. Gooch say that his mother became famous as a village doclress by the help of that prescription. Fothergill's method was to give an emetic every day ; or three or four times a week : and this j^lan answers best, I believe, when the expectoration is scanty, and brought up with diffi- culty, and after much coughing. The best emetic substance in such cases is, doubt- less, i])ecacuan. Mr. Pearson — who has had, I fancy, many imitators — used to give, after the operation of an emetic, one drop of laudanum, five drops of ipecacuan wine, and two grains of carbonate of soda, in a draught, every fourth hour, for several days. Under some such treatment as this, the disease will reach its termina- tion in from six to twelve weeks : and it frequently happens that when the child is quite well in all other respects, it still continues to cough. The cough would almost seem to be kept up by the mere influence of habit. Now, under these circum- stances, change of air will often remove the cough, as if by magic : and 'he shower- bath, and iron in some shape, will sometimes succeed, if change of air be not practicable. 2vv2 558 HOOPING-COUGH. Tliere is a great variet}' of medicines lauded as specifics against hooping-cough : but they are not to be trusted to. Many persons tliink highly of the prussic acid, as a remedy for the paroxysms of coughing. Others employ and laud the extract of belladonna. But these are gigantic remedies to employ in such young subjects. If you give them at all, you must give them in very small quantities, and watch their efTects. The artificial tincture of musk is another substance which some have found useful. Three or four minims of it may be given in the outset, and the dose in- creased till some sensible effect is produced ; and then the dose that has been so reached should be persisted in without further augmentation. I have been assured, by a most intelligent practitioner, that he had got considerable credit by prescribing this medicine, after other persons, with other modes of management, had failed. Digitalis, and cantharipes, are other, and I think, hazardous remedies. Safer drugs recommended, and, for aught I know, equally efhcacious with these poisons, are cochineal, oil of amber, musk, camphor, and the meadow narcissus. Of late the carbonate of iron has been greatly praised by some of the continental physicians. [Horst recommends the flowers of sulphur as' ahnost a specific in hooping-cough. He gives it throughout the disease, from its onset until its termination. Schneider, Roffy, Rand- han, Riecken, and others, confine its use to the more advanced periods of the attack. Jade- lot is said by Barthez and Rilliet to have derived the best effects from the sulphur as a remedy in hooping-cough, as well as in bronchitis unattended with fever. The sulphur is given to children between two and four years of age in the dose of from 6 to 8 grains, two or three times a day, and to older children in doses of from 15 to 20 grains, — in both cases the dose being gradually augmented. Assafostida will \.^ lound a very excellent remedy in- the spasmodic stage of hooping- cough. Dr. Lombard states that he has often known frictions to the spine with the tincture of assafcetida of great service, and we have found a plaster of assafcetida applied to the chest promptly to relieve the cough, which is liable to remain after the more acute symp- toms have subsided. It is stated that M. Berger has found the following plan of treating hooping-cough particu- larly successful. In the first stage, a moderate course of antijihlogistic remedies, purgatives, and repeated emetics of ipecacuanha in combination with tartar emetic. In the spasmodic stage, in which the indication is to quell the existing nervous irritation, being dissatisfied with the remedies ordinarily employed, he was induced to administer the nitrate of silver, from which lie has obtained results singularly beneficial. He administers it in doses of from a sixteenth to a twelfth of a grain, at first three times, and afterwards four times a day. Of course the remedy should not be administered in cases where the state of the diges- tive organs contra-indicates its employment (Annuaire de Therapeutique, 1S46). Dr. Golding Bird remarks (^Guy's Hospital Reports, April, 1845), that, in the second or ner- vous stage of pertussis,' after all infiamniatory symptoms have subsided — and when, with a tolerably cool skin and clean tongue, the patient is still severely distressed by the more or less copious secretion of viscid mucus from the bronchi — each attempt to get rid of which produces the exhausting and characteristic cough — no remedy will be found to act so satis- factorily, or to give such marked and often rapid relief to the child as alum. He has not yet met with any other remedy which is equally efficacious. Dr. Bird generally gives the alum in doses of from two to six grains to children of from one to tjn years of age, repeated every four or six hours. For a child of two or three hours he employs generally the folloM'ing formula : — K Aluminis gr. xxv; extr. conii gr. xij ; syrup, rhsedos. ^ij ; aq. anethi ^iij. m. Dose a medium sized spoonful, every sixth hour. Dr. B. has never met with any inconvenient stringent effects on the bowels during its exhibition ; on the contrary, in more than one in- stance it produced, he says, diarrhcea. The only obvious effects resulting from its use were, diminished secrection, and of a less viscid mucus, with a marked diminution in the fre- quency and severity of the spasmodic paroxysms. — C] External applications are also much in fashion in the treatment of hooping-cough. Frictions to the spine and to the chest ; and as counter-irritants, they probably are of some service. The tartarized antimony is the least innocent of these applications. It will often cause foul and very troublesome sores upon an adult skin : and till I am better advised than 1 am at present of its certain efficacy as a remedy for hooping- cough, no one (however authorized professionally liidere corio hianano), should rub it upon a child of mine. Mothers are many of them fond of using Roche's Embro- cation for the hooping-cough. This (Dr. Paris tells us) consists of ohve oil, mixed ■with half its quantity of the oils of cloves and of amber. Ii PNEUMONIA. 559 Such is tht plan of management which you will do well to enforce — and such are the expedients which you may, if you please, make use of as auxiliaries to that plan — when the disease is inere hooping-cough. But when it becomes complicated with symptoms of inflammation within the chest, or with head symptoms — (and for such symptoms you must jealously watch) — then you must employ antiphlogistic remedies (in addiiion to the antiphlogistic regimen) adapted to the circumstances of the case. Now we know that the bronchi, or the lungs, are affected with inflamma- tion, when we find that the child has fever, and that there is permanent dyspnoea between the paroxysms of spasmodic cough. In such a case we must have recourse to the treatment required in such inflammation : leeches to the surface of the chest, bleeding even from the arm, if the child's age and strength should warrant it, tartar emetic, small doses of nitre, the warm bath, and blistering; and to these measures, modified and combined according to the particular emergency, it will be w^ell to add small and repeated doses of mercury : of the hydrargyrum cum creta, or of calomel; the state of the bowels determining which. Some have recommended friction with the tartar emetic ointment to the chest in such cases : but I have the same objection to it there, in such young patients, as to the spine. When any head symptoms come on, threatening hydrocephalus — such as squint- ing, convulsions, stupor — those remedies must be adopted which 1 endeavoured to describe to you when I spoke of that disease ; leeches to the head, cold applied there, purgatives, the w'arm bath : but except in very young children, I believe there is more danger of fatal pulmonary changes in this disagreeable, and sometimes in- tractable disorder, than of cerebral mischief. I might pass, by a very natural transition, from the consideration of hOoping-cough, to that of spasmodic asthma. But this last complaint is found to exist in connection with various organic changes within the chest, few of which have yet been treated of in these lectures. I shall, therefore, postpone what I have to say respecting asthma, till I have gone through some other thoracic diseases. And I now proceed to pneumonia, or inflammation of the substance of the lungs. Questions have been raised as to the precise part and texture in which the inflammation begins ; and to these questions I may briefly advert as w^e go on: but I hold that in pneumonia all the textures composing the pulmonary substance in the part inflamed are involved in the inflammatory process. Now of pneumonia it is especially true, that we ascertain its extent, its situation, and every step of its progress, by means of the ear. All the symptoms that give us the most sure information respecting the nature of the disease, the event to which it tends, and the remedial treatment which it requires, spring out of the actual changes wrought in the pulmonary substance itself; and these changes are disclosed to us by the method of auscultation. It is necessary, therefore, that you should understand, first of all, what those changes are which are produced by inflammation of the sub- stance of the lungs : that you should know the morbid anatomy of pneumonia, as an indispensable groundwork for a knowledge of its pathology. There are three well-marked, and very constant conditions of the lung, correspond- ing to different degrees and periods of its inflammation. I will describe them in succession, in the order in which they take place. The first stage or condition is that of engorgement : all modern observers agree, I believe, both as to the nature and as to the name of this condition. The substance of the lung is gorged with blood, or bloody serum. It is of a dark red colour ex- ternally, and crepitates less under pressure than sound lung does. We feel thai there is more liquid than air in its cells. It is heavier also than natural, and inelastic, and retains, in some degree, the impression of the finger. When the engorged por tion is cut, we find it red, and we see a great quantity of a reddish and frothy serum flow from it. Its cohesion is at the same time diminished ; it is more easily torn ; more, in that respect, like the spleen ; and accordingly the term splenization of the lung has been given to this stage of its inflammation, as hepatization has to that which succeeds it. In this state of engorgement the mucous membrane of the small bronchial ramifications is of a deep red colour. The portions most engorged. 560 PiNEUMOxMA. although their specific gravity is increased, will nevertheless almost ahvaj's float on water. Now it is necessary to caution you, in the outset, against a very frequent source of fallacy in respect to this condition of inflammatory engorgement. Such a state of the pulmonary substance as I have been describing, you will meet with in half, at least, of the dead bodies which you may have to examine ; and you must not necessarily infer therefrom that the persons deceased had in/lamrnation of the lungs. There is almost always some degree of mediunic.al engorgement of the back part of the kings ; or of that part which has been undermost during the last hours of life, or after death ; and the two kinds of engorgements can scarcely be distinguished from each other by their anatomical characters alone. Andral at one time held, indeed, that if the engorged part were more friable, more easily torn or broken down under pressure than natural, that was a sufficient evidence of its inflammation ; but he afterwards saw reason to change that opinion. We judge by the situalion of the engorgement sometimes : if it be not in a depending part of the lungs, it is surely inflammatory. We judge also by the antecedent symptoms. If the inflammation continues, the lung undergoes a further alteration, and presents the following characters. It is still red — externally and within : but it crepitates no longer under pressure ; and it sinks in water : it contains in fact no air. Its cut surface presents sometimes a uniform red colour; sometimes a slightly mottled or variegated appearance, produced by intermixture of specks of the black matter of tne lung, and of the interlobular areolar tissue, which is less red than the other parts, and more than naturally obvious to the sight ; but the spongy character of the organ is lost; it is evidently solid ; and the cut surface very much resembles the cut surface of the liver. Hence Laennec, and after him most other writers, have applied to this altered condition of the lung the term lupa'ization. There still flows out, under pressure, from the surface, when a fresh incision is made, some red fluid, but it is much less in quantity than in the former degree ; and it is not foamy ; and if the surface be gently scraped with a scalpel, you may often perceive in the red fluid so collected, some traces of a thicker and yellower matter, the first indication of commencing suppuration. The hepalized lung is denser and more solid than before, but it is also more friable ; more easily crushed and broken : and this results from the softening of the areolar tissue which holds its component parts together. If you tear a portion of hepatized lung, and examine the torn surface with a mag- nifying glass, the pulmonary tissue will appear to be composed of a crowd of small red granulations, lying close to each other. These are, 1 presume, the air-vesicles, clogged up, thickened, and made red, by the inflammation. As no air is contained in the lung in this stage of the inflammation, it follows that if the entire organ be involved in the disease, it vvill not collapse when the thorax is laid open ; and will therefore appear to be increased in bulk. It is swelled, in fact — ^just as other in- flamed parts are swelled — by the congestion of its vessels, and by the effusion of blood, or of some of the constituent parts of the blood, into its hollows and inter- stices. The marks of the ribs are frequently visible on the surface of the distended lung. The texture of the lung in this condition is sometimes so rotten, that a mode- rate degree of pressure between the fingers will suffice to reduce it to a state of pulp; and this diminution of consistence has made Andral quarrel with the term hepatization : and he proposes to call this second stage of pneumonia, red softening, runiol/hseiyient rouge. All this is very unimportant, provided that you recollect the sense in which either nomenclature is employed. But as Laennec and Andral are both great authorities, and both have their disciples in this country, it is weU thai you should understand their language. I have been speaking of pneumonia as it is apt to attack the whole, or the larger portion, or a considerable portion, of the lung on one side : but it is a curious cir- f-umstance that the changes I have been describing are sometimes exactly limited to certain of the pulmonary lobules ; and this slate is called, accordingly, lobular pneumonia. In a degree still further advanced, the pulmonary tissue, dense, solid, and imper- vious to air, as in the last stage, undergoes an alteration of colour ; it presents -i red- PNEUMONIA. 561 dish yellow, or straw, or drab, or stone colour; or it is of a grayish hue, sometimes mottled with red, or with the black pulmonary matter. The little granulation? which I just now mentioned are whitish or gray, instead of being red ; and the texture of the lung is still more rotten and friable than before. It is full," in fact, of puriform matter, which is ^metimes so abundant that it oozes out plentifully when incisions are made into the lung : or it may be made to exude by gentle pressure. The gray pus shows itself upon the cut surface in the form of minute drops. The more the pulmonary texture is soaked or drenched with this fluid, the softer and more friable it becomes. When crushed between the thumb and fingers, it is reduced to a yel- lowish gray pulp, exactly hke the fluid itself, only rather more consistent. And by gently forcing the finger into any part of the parenchyma in this state, a small cavity may be made which soon fills with pus, and which might readily be mistaken for a recently formed abscess. Laennec has called this third stage of the process of inflammation in the lung, gray hepatization, ox purulent injiltration. Andral denominates it gray softening — rumolHssement gj'is. In fact, it consists in diffused suppuration of the pulmo- nary texture. And it is a very remarkable circumstance, and one which the re- searches of modern times have brought to light, that, in the lung, inflammation going on to suppuration does not lead to the formation of a circumscribed abscess, as it does when it affects the areolar tissue, or the parenchymatous tissue, in other parts of the body. Abscess of the lung used to be spoken of as a very common thing; but it is a very rare thing. In several hundred dissections of persons dead of pneu- monia, made by Laennec during a space of more than twenty years, he only met with five or six collections of pus in the inflamed lung. Once only did he find -i large abscess of that sort. Once only has Andral seen a real abscess of the lung form as a consequence of pneumonia. You may find collections of pus in the lungs, sometimes, occurring in connection with the inflammation of veins. Several in- stances of that kind have happened very recently in patients who have died in the Middlesex Hospital. But these are not ordinary cases of pneumonia. I need scarcely caution you not to take tubercular vomicae and cavities, containing pus, for genuine abscesses of the lung. These, and the phlebitic deposits of pus, are not exceptions to the general statement: they arise from different forms of disease : and you will find a circumscribed collection of pus, surrounded by hepatized lung, as a consequence of common pneumonia, to be an exceedingly rare event. Can we account for this in any way ? I do not know that any satisfactory expla- nation of the fact has ever been offered. But I would submit to your consideration what has occurred to my mind on this subject. When I was speaking of inflamma- tion in general, I pointed out to you the remarkable influence which the presence of atmospheric air in contact with the inflamed part has in accelerating, or deter- mining, the event of suppuration. In a recent cut, the admission or exclusion of the air to the cut surface will make all the difTerence between the adhesive and the suppurative inflammation ; and so in other cases which I then mentioned, and will not now trouble you by repeating. Now it seems to me that the same principle obtains in inflammation of the lung. First, there is an effusion of serum and blood, then of lymph and blood ; but the air passing into the surrounding sounder tissue, and mingling for a time even with the inflamed portion itself, causes the suppurative process to supersede the adhesive ; and so no wall of circumvallation is formed by the coagulable lymph, as is the case in areolar tissue which is not accessible by the air. Whether this be a sufficient explanation of the/rtc/ (all explanations being the resolving a given fact into a certain class of other facts more general and compre- hensive); I say whether it be a reasonable and satisfactory explanation, you will judge : at any rate it may serve to impress upon your memory that fact which it enJeaTours to elucidate. Gangrene is sometimes, but very seldom, the result of acute inflammation of the lUng. It is almost as uncommon as the formation of an abscess. Yet it certainly does now and then occur, as a consequence of acute inflammation of the pulmonary substance. It is somewhat more common (though under any shape rare) as an inde- pendent and primitive afTection. Sometimes it occupies a large portion of the lung, 36 562 PNEUMONIA. and is uncircumscrlbed ; and sometimes it is more limited. Tlie colour of the part which has thus perished under inflammation is dark, of a dirty olive, or greenish-brown colour. The gangrenous portion is moist and wet; sometimes of the consistence of the engorged lung ; more commonly softer, and even diffluent ; and it stinks most abominably. This horrible odour is in truth, during hfe, the most distinctive cha- racter of gangrene of the lung. It sometimes renders the room in which the un- happy patient is lying, scarcely endurable. I should have stated before that the puriform infiltration of the third stage of pneumonia is attended with no fetor. There are some other points, connected with, or learned from investigating, the morbid anatomy of pneumonia, which I may as well take this opportunity of tell- ing you, before we go on to consider the symptoms, ph3'sical and general, of that disease. There are two lungs, just as there are two tonsils, and two eyes ; and in the one case as well as in the other, inflammation may affect both organs at once, or it may affect one of them alone. Technically speaking, pneumonia may be either double or single. Acain, the inflammation may occupy a part of one lung, or the whole of it : in other words, it may be partial or general ; but it does not affect all parts, or both sides, indifferently or capriciously. In the first place, it is (why I know not) greatly more common on the right side of the body than on the left. I will give you some statistical statements collected by Andral, in respect to this point. Of one hundred and fifty-one cases of pneumonia, noticed at La Charite, ninety were of the right lung alone ; thirty-eight only of the left alone ; seventeen of both sides at once ; and in six the situation was uncertain. He was at the pains of collecting the parti- culars of fifty-nine other examples of pneumonia, from different authors, so fully de- scribed as to leave no doubt about the nature and situation of the disease. Among these, the inflammation existed in the right lung alone in thirty-one patients ; in the left alone in twenty; and in both sides at once in eight. Hence, taking both series of observations together, we have two hundred and ten cases of pneumonia; and there were one hundred and twenty-one in which the right side was solely the seat of the disease ; fifty-eight in which the left ; twenty-five in which the pneumonia was double ; and six in which the seat was uncertain. So that, at this rate, pneu- monia is more than twice as common on the right side as on the left ; and does not occur on both sides together so often as once in eight times. Again, with regard to the part of the lung which is most obnoxious to inflamma- tion, there are remarkable differences. It is well known, and it is a very important fact in respect to diagnosis in some cases, that the lower lobes are more liable to inflammation than the upper. I speak, of course, of active idiopathic inflammation. But this circumstance, much insisted on by Laennec, and quite true in the main, has perhaps been somewhat exaggerated. I have not had leisure to frame any numeri- cal statement of the cases that have come under my own observation, but the general impression which they have left upon my mind is in favour of the correctness of Laennec's statement — that pneumonia generally commences in the lower lobes, and spreads upwards frequently to the superior lobes. But I may adduce Andral's sta- tistical representation in respect to this question also. Of eightj''-eight cases of pneu- monia, he found that the inflammation affected the inferior lobe forty-seven times, the superior lobe thirty, and the whole lung at once, eleven. Inflammation of the bronchi constantly accompanies inflammation of the paren- chyina. The mucous membrane presents a red colour, both in the large and in the small branches of the air-passages. And when a single lobe is inflamed, it has been observed that the redness of the mucous membrane existed in those bronchial tubes alone which were distributed to that lobe. You may have bronchitis without pneumonia ; but pneumonia without a corresponding extent of bronchitis is perhaps riever seen. The majority of cases of pneumonia are attended also with a degree of inflam- mation of the investing membrane of the lung: there is some pleurisy. So fre- quently indeed is this the case, that certain writers, Andral among others, call the. disease by the compound name of pleuro-pneumonia. However, pneumonia may and does sometimes occur without any concurrent pleurisy. Of the latter complaint PNEUMONIA 563 I must speak by itself; and I merely notice now the frequent combination of the two — the occurrence of a slight degree and extent of pleuritis in most cases of pneumonia — that you may the better understand some of the general symptoms of pneumonia. Now such being the changes which the lungs undergo when inflammation affects the pulmonary texture, we may next inquire what signals of its existence the inflam- mation holds out ; and how far we, not having the power of seeing what is going on within the cavity of the thorax, may nevertheless ascertain the important processes which are there transacted. If the ear be applied to the surface of the chest, with or without the intervention of the stethoscope, and the portion of lung subjacent to that surface happen to be in the first stage of inflammation, that of engorgement, what does the lung, so sufl^er- ing, say? what audible notice does it give of its morbid condition? Why, it speaks very plainly. You hear a pecuHar crackling sound ; the smallest and finest-possible kind of crepitation : which has been happily illustrated by saying that it re&emblt-s the multitudinous httle crackling explosions made by salt when it is scattered over red-hot coals. Andral has another resemblance for it, and not a bad one ; he says the noise is often like that which is produced by rumpling a very fine piece of parch- ment. Dr. Williams observes that a pretty correct idea of this sound may be obtained in a ready way, by rubbing between the finger and thumb a lock of one's own hair, close to the ear. Laennec calls this crepitant rhonchiis : I would speak of it as minute crepitation ; or the crackling of pneumonia. This may be heard in a very limited spot in the beginning. And what an important sound it is ! " It is a direct symptom, having immediate reference to the structure of the part. And (says Dr. Latliam) if we consider what the part is, and what the disease; the part the lungs, and the disease inflammation : we cannot too highly value this single symptom (simple and mean as it may seem), which gives the earliest and surest inti- mation that such a disease has begun, as tends to disorganization, and the inevitable loss of life, unless quickly arrested by its counteracting remedy." At first, when you catch the inflammation in its earliest stage, this minute crepita- tion, which announces commencing engorgement of the part, is heard mingled with the ordinary vesicular breathing. This obscures the natural sound, though it does not yet entirely cover it — but as the inflammation advances, the crackHng becomes more and more pronounced, until at length it totally supersedes it. So long as the natural vesicular breathing prevails over the crackling, we may conclude that the inflammation is slight: and if the crackling should, in its turn, become predominant if it should ultimately mask the murmur of respiration entirely, that infallibly de notes the progress of the pneumonia, and teaches us that it tends to pass from the first into the second degree. But the crackling sound does not long remain in any part. As the case proceeds, the sound is less and less heard, and at length is not heard at all, in that spot ; and it may be succeeded by one of two very different things. Its place may be taken by the natural respiratory murmur again. When this is so, it denotes the resolution of the inflammation. But the crackling may cease, and either no sound at all be heard in its stead, or another morbid sound which I shall presently describe : and this teaches us with absolute certainty, that the disease is growing more severe and serious ; that the lung is becoming, or has be- come, hepatized. Let us inquire, for a moment, before we go any further, what is the nature and the seat of this minute crepitation, so characteristic of the commencement of pul- monic inflammation. With respect to its scat, I apprehend, there can be no question. It proceeds from the very smallest ramifications of the bronchi, and the air-vesicles themselves. The common opinion is, and such, I confess, is mine, that the sound is the same in cause and kind, only dilTerent in degree, with the large and small crepi- tation described in a previous lecture : that it results from the passage of a^r through liquid ; from the formation and bursting in quick succession of a multitude of little air-bubbles. The bubbles are necessarily minute, for they are formed, and they ex- plode, in very slender tubes. This is Andral's view of the matter. Laennec doe.s pot appear to have formed very clear notions on the subject. But a different expla 564 PNEUMONIA nation has been offered by a well-known and able writer on the auscultatory signs of disease, in this country : I mean Dr. Williams. He holds t^at the distended blood-vessels, and the interstitial serous effusion, press upon the minutest bronchial ramifications, and obstruct, without wholly preventing, the passage of the air through them : that these small tubes are lined by a viscid secretion, such as is expectoratt-d, and such as I shall have to describe : that the sides of the tubes stick together in consequence of the presence of this viscid matter ; and that it is the separation of these adhering sides by httle portions of air which successively pass in and out, that gives rise to the characteristic sound. However, what it is important to remember is, that the crackling sound proceeds from the minutest divisions of the air-tubes, and from the ultimate vesicles of the lungs. Sometimes, I say, when this crackling ceases, the ear apphed to the corresponding surface of the chest, feels it heave up in inspiration, but catches no sound at all. Much more commonly, however, a neio sound reaches the ear. It is not the vesi- cular rustle ; it is not the minute crepitation : but a whiffing sound is audible, like that produced by blowing through a quill. Little gusts of air are puffed in and out ; most distinct, often, at the termination of a slight cough or hem. This is the sound to which the term bronchial respiration has been given : and the name expresses well the fact. I mentioned before that in the healthy state we do not hear the air pass through the larger bronchi during inspiration and expiration : the sound doubt- less is made, but it is obscured and hidden by the smooth rustle of the vesicular breathing, which comes from the spongy lung surrounding the large divisions of the bronchi, and intervening between them and the ear. But that spongy structure is now filled up. The hepatized lung admits air to pass through the larger bronchi, which are still patent, but it admits none into the vesicles and smaller tubes. It cre- pitates not when pressed between the thumb and finger: in fact, it is converted into a solid substance, and conducts the sound, in the living body, as any other solid sub- stance might do: and therefore the whiffing, blowing, gusty sound of the breath, as it enters and departs from the larger bronchial tubes, which still remain open, is conveyed to the ear, and bronchial respiration is heard. At the same time, and in the same place, another auscultatory phenomenon generally arises, and admits of a similar explanation. The voice of the patient descends into the pervious bronchi, and is conveyed to the ear of the listener through the solid lung : and it is quite altered by that circumstance. The tone of it is modified ; it sounds hke the voice of one speaking through a tube. It is totally different from the same voice heard through the healthy lung at the corresponding point on the other side. It approaches in distinctness and qualitj% but it does not reach, the sound heard in speaking, when the stethoscope is placed over the trachea. A humming and muttering are audible, but the words are not distinctly articulated into the ear. It is hard to describe these things in words. Three minutes, at the bedside of a patient in whom the bronchial breathing and the bronchial voice were tolerably well marked, would put you in possession of them for ever. They are striking sounds : requiring no fine tact to distinguish : and exceedingly informing sounds. But I must resume this subject when we meet again. LECTURE LI. Pnaimonia continued; its general symptoms; pain, dyspnoea, cough, erpectoror tion. Course of the disease. Prognosis. Treatment. 1 svAS describing, at the close of the last lecture, the auscultatory signs which lead us to the knowledge that the inflamed lung, in a case of pneumonia, has passed from the first into the second stage of inflammation, and become solid, or hepatized. The pltered condition of the organ gives rise to altered sounds. Instead of the vesicular PNEUMONIA. 565 breathing, which is the natural sound, or of the minute crepitation, which is the sound belonging to the first stage of the inflammation, we either hear no sound at all, although we feel the chest heave up against our ear, or we hear what I described under the denomination of bronchial respiration; that is to say, a puffing sound which is conveyed to the ear from the larger and still pervious branches of the bron- chi, through the solid portion of the lung around them, and through the solid walls of the chest. This is what the listener hears when the patient breathes. And when he speaks, his voice is heard, much more resonant than is natural, much more reso- nant than in the corresponding spot on the opposite side of the chest, entering the same open air-tubes, and conducted to the ear by the dense and sohd lung. We thus become acquainted with two entirely new sounds ; sounds which are never heard in the healthy state of the lungs ; bronchial respiration, and bronchial voice, or bron- chophony ; and you will do well to remember these two sounds, and to famiHarize your ear to them ; for they speak a most significant language in other pulmonary diseases, as well as in pneumonia. But I say, sometimes we hear these morbid sounds, in the case in question, and sometimes we hear no sound at all during the breathing. How is that? Why, the existence and degree of the bronchial respiration, and bronchial voice, vary accord- ing to the place and extent of the inflammation. These morbid sounds are most plainly marked, where the number and size of the bronchial tubes involved in the hepatization are the greater. They are most distinct, therefore, when the inflamma- tion occupies the upper part of the lung ; or the central parts, what are called the roots of the lungs : and when it extends thence to the surface : but when the lower portions alone are inflamed, or the inflammation is merely superficial or partial, they may not be heard at all. Again, if the hepatization should be so general and com- plete as to prevent the chest, on the affected side, from expanding, you will, in that case, hear no bronchial respiration ; for the air in the large bronchi must be stagnant. Bronchophony, however, may remain. When we have the bronchial respiration, usually also we have dullness on per- cussion. The degree in which this is present will depend upon the circumstances of the case. If a portion of crepitant and permeable lung, even a thin portion, should intervene between the inflamed parts and the walls of the chest, there will still be resonance, though it will not be exactly the natural resonance, on percussion. If the hepatized part come close up to the ribs, the sound elicited by mediate percussion will be flat, or dead. With all this, you will generally hear, in the sound lung, if the whole of the other be engaged in the inflammation — or in those parts of the inflamed lung that arc healthy — you will hear, I say, puerile respiration ; and this is a strong confirming symptom that a part of the breathing apparatus is spoiled, and that the remaining part is endeavouring to compensate for its deficiency. Now, this period in pneumonia, when no sound but bronchial breathing is audible during respiration, is a period of anxious and painful interest. We cannot tell whe- ther the lung will revert gradually to its healthy state, or whether it is passing into the third stage ; that of purulent infiltration. But taking first the most favourable of these two suppositions — what happens ? Why, there, where for a while we heard nothing but bronchial respiration, a slight crepitation begins again to be distinguish- able, especially at the end of each act of inspiration : gradually this increases in ex- tent and intensity, and, as it increases, the bronchial breathing and the bronchial voice become proportionably less distinct, in consequence of the texture of the lungs becoming again permeable by air, and therefore a worse conductor of sound. By degrees, the bronchial breathinof and the voice disappear altogether ; the vesicular murmur begins again to mix with the crepitation, and at length supersedes it ; and the lung is restored to its previous fitness for the purposes of respiration. The same symptoms therefore recur, over again, but in a reversed order; the returning crepi tation is, however, coarser and larger, and less regularly diffused, than that of the advancing pneumonia: and even when nothing is heard in the ordinary condition ef the breathing but the natural vesicular rustle, some crepitation is found for some little while to mingle with it, towards the end of a full inspiration. This is believea to depend upon an oedematous state of the pulmonary texture, left after 'he active 2x 566 PNEUMONIA. inflammation has been displaced.* Next, let us take the worst of the two supposi- tions. Auscultation has traced the disease through its stage of engorgement, and into its stage of hepatization. Can it trace it further? I believe not, with any cer- tainty. We cannot say whether the lung remains in the state of hepatization (as it may remain), or whether it has passed into the third stage. But at last, if the struc- ture of the lung breaks down, and a portion of it is expectorated, air finds its Avay into the vacant spot, and gives rise to large gurgling crepitation. But the other signs sometimes come to our aid when this state has been reached. We often find, after death, the three degrees of pneumonia existing in difTerent parts of the same lung; and therefore it is not to be wondered at that the different parts of the chest should during life yield sounds indicative of each of those degrees, or at least of the first two ; minute crepitation here, bronchial breathing, and bron- chophony, and dullness on percussion tlicre, and in another spot no sound at all, or, on the other hand, puerile respiration. Again, it must be confessed — and I am desirous jf confessing it, for I am sure that the method of auscultation is brought into undeseived suspicion and disrepute by attempts made to assert its all-sufficiency in all cases — it must be confessed that, in some instances, although pneumonia exists, the ear is able to collect nothing of it; nothing indicative of its situation, or of its extent, or even of its existence. The pulmonary expansion is clear, all over the thorax ; nay, much more strong than is natural: and this circumstance justifies the belief that, from some cause or other, not necessarily from pneumonia, a portion of the lung has ceased to discharge its function, and the other portions have taken it up. This failure on the part of aus- cultation happens when the inflammation occupies only a small portion of the lung, and that portion central, or deeply situated — at a distance from the walls of the chest. For this reason, auscultation may give little or no account of lobular pneumonia. Such are, then, the physical signs that accompany and reveal the successive changes of texture, destructive and reparatory, which take place in inflammation of the lungs. I do not know whether I have made them clear to you ; but I know that no very long apprenticeship, if I may so speak, in the wards of a hospital, will be sufficient, Avith a little guidance, to render you master of them. There are indeed varieties, and modifications, and exceptions, which nothing but such an apprentice- ship can ever teach you. Of these it would be idle and unprofitable for me here to speak: and I go on to consider the general SAgns of pneumonia; some of which, either in themselves, or in combination with the physical signs, are of no less im portance than these. In the majority of cases the commencement of inflammation of the lung is marked b)'' shivering, followed by heat and increased frequency of pulse ; in one word, by inflammatory fever ; and at the same time, or presently after, a stitch in the side comes on, with cough, and a sense of oppression in the chest. In other instances the disease steals on more insidiously, and succeeds to bronchitis ; the inflammation appearing to propagate itself by httle and little from the larger to the smaller bronchi, and ultimately to reach the air vesicles themselves, and the interstitial tex- tures ; and this may be accomplished with or without the sharp pain or stitch in the side. At first the cough may be dry, but it soon is attended with a verj'' characteristic sort of expectoration. The dyspnoea is sometimes but slight in the outset ; some- times severe. Apart, therefore, from the physical signs, we may say that the usual symptoms of pneumonia are pain, more or less severe, on one side of the chest ; dyspnoea ; cough ; a peculiar expectoration ; and fever. The pain in pneumonia appears to exist only in those cases in which the inflam- mation of the lung is accompanied by some degree of pleurisy. But these are the most numerous cases. It is most commonly experienced on a level with, or a little be.ow, one or other breast ; but it may exist in almost any other part of the thoracic parictes. Generally it is most severe at the beginning, declines by degrees, and ceases altogether for some time before the pnevnionia ceases. It is aggravated by cough ; by a full inspiration ; often by sudden changes of posture ; by pressure made upon the ribs or intercostal spaces ; or by percussion of that part. For the same PNEUMONIA. 567 reason the patients cannot lie on the painful side. Andral dec.^res that in all the individuals in whom he had noticed this pain, and who died, he found the pleura inflamed, and covered more or less with coagulable lymph ; and, on the other hand, that he had constantly known the absence of pain coincide with a sound condition of the pleura. When there is no sharp pain, there is, however, some morbid sensa- tion, of trouble, or tightness, or weight, or heat on the affected side. He quotes, with approbation of its justness, the ancient observation respecting pneumonia : — " Affert plus periculi quam doloris." When I come to speak of pleurisy as a distinct and substantial affection, I shall revert to this pain. It is, or it was, a common doctrine, that one of the general symptoms of pneu- monia relates to the posture which the patient assumes ; that the decubitus, to speak technically, is on the side affected. The truth, however, is as I have just now stated it. The breathing, indeed, is more oppressed when the patient lies on the sound than when on the diseased side ; but, in point of fact, patients labouring under this disease almost all lie upon their backs : the decubitus is dorsal. The difficulty of breathing deserves some notice. In general it bears a direct proportion to the extent and severity of the inflammation. But there are many exceptions to this. In some persons the inflammation of even a very small portion of one lung will embarrass the respiration greatly. In others, who have a much larger portion of the pulmonary tissue intensely inflamed, the dyspnea is but slight. So that the degree of difficulty of breathing is not a certain measure of the seriousness, or rather of the extent and the degree, of the inflammation. It is probable, that if we knew of what kind was the ordinary breathing of the individuals thus differently affected, we should find that they whose respiration is generally indistinct, or noiseless, who do not seem to jvant all their lung for the purpose of breathing, would best bear to have a part of it in- fiamod ; and rice versa. Caeteris paribus, inflammation of the upper lobe causes greater dyspnoea than inflammation of the lower. I may observe further with respect to dyspnoea in general, that you must not trust implicitly to what patients tell you on that head. They will often deny that they have any shortness of breath, when one may see them respiring with unnatural rapidity, or observe that, in their dis- course, they pause between every three or four words to take breath. However, the dyspnoea produced by pneumonia varies greatly in its degree in different cases. Sometimes it is so slight that the patient is not conscious of it, and the physician scarcely perceives it : sometimes it is so extreme, that the patient, entirely regardless of what is going on about him, seems wholly occupied with respiring; is unable to lie down; can scarcely speak; his face becomes lividly red or pale, and is expressive of the utmost anxiety ; his nostrils are expanded, and in full action : the respiratory movements are very frequent and very short or shallow, as if the air was not able to penetrate beyond the primary divisions of the bronchi. From this state of extreme d3'^spnoea few patients recover : and between this, and the slightest hurry or embarrassment of the breathing, there are of course many degrees. Delirium is a symptom which very frequently occurs in the course of an attack of pneumonia ; and a very ugly symptom it is. It denotes that the due arterializa- tion of the blood is largely interfered with by the pulmonary affection. It measures, in one sense, the quantity of mischief which is going on within the thorax : and it is a direct evidence that the pectoral mischief is telling, through the circulation of venous blood, upon ihe brain. The cough, in pneumonia, has no particular character, and affords but little infor- mation. It does not usually take place in paroxysms; and its severity and frequency are not always proportioned to the intensity and extent of the inflammation. It is usually dry in the outset; but in a few hours it is accompanied by the expectoration of peculiar sputa, which constitute one of the most certain indications of the pre- sence of pneumonia : and as this is a symptom which every one can easily recog- nize, I will describe this characteristic expectoration, and endeavour to explain the cause of it. The expectoration of pneumonia, when well marked, consists of transparent and lawny or rust-coloured sputa, uniting, in the vessel containing (hem, into one jelly 5G8 PNEUMONIA. like and trembling mass , and of such viscidity that the vessel may be turned upside down, and strongly shaken, without their being detached from its bottom or sides. It cannot be said that when there is no such expectoration as this, there is no pneu- monia : but it may be affirmed that where we do find such expectoration, there almost certainly we have pneumonia. At the outset of the disease, either nothing is spat up, or simply some bronchial mucus : but on the second or third day generally, the matters expectorated assume the characteristic appearance : i. e., they come to be composed of mucus, intimately united and combined with blood. It is not that the sputa are streaked with blood, as often happens in bronchitis: nor have we the im- riiixed blood of hfemoptysis. But the blood and the mucus are amalgamated toge- ther ; and in proportion to the quantity of the former, the sputa become of a yellow colour, or of the colour of rust, or of a decided red : and at the same time they be- come glutinous and tenacious : they adhere together, so as to form one transparent homogeneous mass. So long as this mass flows readily along the sides of the vessel when it is tilted, so long have we reason to hope (judging from that circumstance alone) that the inflammation of the lung does not pass its first degree. But, as I said before, the sputa often acquire an extraordinary degree of viscidity: so as no longer to separate themselves from the vessel when it is inverted : you cannot even shake them out. When this happens, we are obliged to fear that the pneumonia reaches its second degree. In fact, when the sputa become thus rusty and very viscid, the stricken chest almost always returns a duller sound, and the vesicular breathing is abolished, and bronchial respiration takes its place. The pneumonia is then at its acme ; and the expectoration remains for some time stationary. At length, if the inflammation recedes, the sputa become again less tenacious, less red or yellow, and more like the expectoration of mere catarrh. But if the disease goes on from bad to worse, the rust-coloured sputa may continue to the end. Commonly there is less expectoration in that case, or even none at aU. Not that the mucus ceases to be secreted, but that its ea-cretion is no longer possible : either on account of its extreme tenacity, or on account of the patient's debility. The sputa then accumulate in the bronchi, trachea, and larynx, in succession : they fill up the air-passages, and suffo- cate the patient. In some instances the expectoration, in the advanced stages of the disease, consists of a fluid having the consistence of gum-water, and of a broAvnish- red colour: like (as Andral says) liquorice-water, or plum-juice. He states that the mere occurrence of this kind of expectoration has led him to announce the existence of the third stage of pneumonia ; and that the subsequent examination of the dead body has seldom failed to justify his diagnosis. Sometimes again, during the third stage, very perfect pus is excreted. That the colour of the sputa peculiar to pneumonia depends upon an intimate union of blood with the altered mucus, is perfectly obvious when that colour is deep. And even when this transparent mucus is yellow, you may satisfy yourselves by the following simple experiment that the source of the colour is the same, and that the yellowness does not result, as some have fancied, from an admixture of bile with the matter expectorated : — If to water, rendered viscid by dissolving a certain quantity of gum in it, you add blood, drop by drop, you will obtain, in succession, all the shades of colour that are presented by the pneumonic sputa: first a yellow tinge; then a tawny yellow Vv^hich loses itself in a red, and comes to represent the colour of the rust of iron ; and lastly an intense red. The sputa may indeed, sometimes, but I believe that does not often happen, be coloured by bile; but bile is not the source of the yellowness which they assume in cases of pneumonia. Sputa composed of very red mucus, indicate pneumonia less sunly than such as are tawny. The very red masses, in which there is more blood than mucus, often belong to pulmonary apoplexy. Although these rust or orange-coloured sputa are commonly present during ihe more active period of pneumonia, and, as far as m_v experience goes, are peculiar to that disease, you ought to be aware that they do not constantly accompany it. Some- times the matters expectorated are like those of catarrh : and sometimes there is scarcely any expectoration at all. When the pneumonia passes into gangrene — which I repeat is an exceedingly PNEUMONIA. 569 rare consequence of inflammation in that organ, — the expectoration becomes of a greenish, or reddish, or dirty gray colour ; and exhales a fetid smell, resembling that which proceeds from gangrene of the external parts. T have now described, seriatim, the main symptoms, general and physical, which mark the existence and the progress of pneumonia. And in order to give you a just notion of each, I have spoken of them separately. But they exist together ; and they must be studied together : and some will be found to confirm or to correct the indications that might be drawn from the others. I must briefly therefore run over the phenomena of the disease we have been considering, as it actually presents itself in most cases. The first symptom felt is commonly pain in the side, which may or may not have been preceded by rigors. At the same time the breathing is constrained ; and the patient coughs without expectorating. At this period, the ear may generally detect a slight degree of minute crepitation, which is not strong enough to mask entirely the vesicular rustle; and the stricken thorax still sounds well : and there is fever withal. This assemblage of phenomena constitutes the first period of the disease. From the second to the third day, new symptoms appear. The expectoration, hitherto absent, or merely catarrhal, becomes characteristic ; being at first moderately viscid, and having a degree of colour proportioned to the variable quantity of blood which it contains. The minute crepitation increases, and drowns or supersedes the natural respiratory murmur : the clear sound produced by percussion begins to diminish on that side on which the crackling is heard and the pain is felt ; and that pain is commonly less sharp than in the beginning. The dyspnosa increases, as is quite apparent from the short and frequent inspirations made by the patient. If the pain be acute, he cannot he, on that account, on the side affected ; neither can he place himself on the sound side, because in that position his respiration becomes more laborious ; he remains, therefore, almost constantly, lying upon his back. In this condition of pneumonia, though the disease may be severe, the inflamma- tion is as yet in its primary stage. It often remains stationary for a while, and then recedes, and terminates by resolution. The dyspncea diminishes, the slight dullness of sound disappears, the crackling is gradually displaced by the natural murmur of the pulmonary expansion, the sputa again become those of simple bronchitis, the fever subsides, and ceases ; and all is well again. At other times, instead of retrograding towards resolution, the pneumonia becomes more intense, or rather more extensive, without passing beyond its primary stage ; and the patient may die while it is still in that stage. But this is unusual. Ordina- rily, if the inflammatory engorgement does not cease by resolution, and the symptoms that announce it are exasperated, we must expect that the second stage will be established. And we may be certain that it exists when we observe the following phenomena : — the breathing becomes more and more constrained, short, accelerated; the speech ceases to be free ; the patient can do no more than pronounce a few in- terrupted words in a panting manner. The sputa acquire such a degree of viscidity, that they can no longer be detached from the vessel by shaking it ; the sound afforded by percussion, on the side affected, is decidedly dull : at first we still hear a little of the minute crepitation, without the admixture of any pure vesicular breathing; then that hltle crepitation ceases, and either no sound at all is perceived by the ear, or, in the part where the percussion is dull, bronchial respiration is heard, and this is almost always accompanied with bronchophony. The patient continues to lie on his back. In this degree of the disease the prognosis is always uncertain. The patient often sinks rapidly, and dies from apnoea. Yet even in this degree resolution may still take place. In that case the dullness on percussion diminishes; the bronchial breathing disappears; we hear afresh the smaU crepitation, at first alone, then mixed with the natural respiratory murmur, which, in its turn, becomes alone audible. The sputa return to their catarrhal character. In the meanwhile the dyspnoea and fever jpdiminish, and then cease entirely. It would doubtless be very interesting to determine, in a given case, whether the lung of our patient was in the second or the third stage of inflammation. But there 2x2 S70 PiNEUMONIA. are no certain means for making -this distinction. We may guess that the third stage is established if the face becomes exceedingly pale and corpse-like : we may be more confident of it if the prune-juice expectoration should occur; and our pre- sumption will be strengthened if the disease has existed for a certain time. How- ever, this last circumstance will not help us 7nnch ; for sometimes the lung has been found to be in a state of suppuration on the fifth day of the disease, and sometimes it has been found in a state of red hepatization after fifteen or twenty days. Whether, when the lung has reached this third stage, it is still susceptible of repair, is a question which no one can answer. We have not the materials for its solution, inasmuch as we have no sure sign of the existence of this third stage during life. I should think that recovery from diffused suppuration of the lung is not possible. The rarer form of circumscribed abscess certainly is not of necessity fatal. The duration of pneumonia may be laid, upon an average, at ten days. In a table collected by Andral for another purpose, viz., to determine whether there were any fixed critical days in respect to the termination of the disease (a cjuesiion which I shall not now discuss), the duration, in 112 cases, varied from four days to six weeks. But one only was thus protracted ; 23 cases lasted each seven days ; and only 15 of the 112 instances continued longer than a fortnight. I have very little to add to what I have stated already of the morbid anatomy of pneumonia. Of the changes which the lung itself undergoes you are now I hope fully apprized. The pleurisy, which often attends the disease, is seldom accom- panied by much effusion; indeed, when the whole of one lung is sohdified by in- flammation, it fills the cavity of the pleui-a, and prevents much effusion. The heart is found to be in that condition which I formerly described to j'ou, as being both a consequence, and an index, of death by apnoea. Its right cavities especially are dis- tended by black coagulated blood ; and a remarkable degree of venous congestion is frequently met with in the liver, and spleen, and intestines. The amount of this varies according as the process of dissolution — what the French call the agony — has been more or less protracted, and the breathing more or less difficult. Neiiher need I enter upon any formal discussion of the causes of pneumonia. Sometimes no cause can be traced ; sometimes the disease is clearly the consequence of exposure to cold ; especially under those circumstnces which were fonnerly de- scribed as aiding the injurious operation of cold upon the human body. Why, in one person, such exposure causes peritonitis, in another pleurisy, and in a third in- flammation of the substance of the lungs, we can give no satisfactory account. It remains, then, only that I should speak, first of the prognosis, and secondly of the treatment, of pneumonia ; and of the first of these matters, of the prognosis, I have already, incidentally, told you nearly all that is made out, or worth knowing. It is almost superfluous to say that the first degree of the disease is less dangerous than the second, and the second than the third. There is no doubt that pulmonary inflammation may still undergo resolution, although a great part of one lung should be hepatized ; but there are no facts which prove — indeed there is no possibility of proving — that the lung may recover from the state of purulent infiltration — the third degree. Something will depend upon the extent of the inflammation ; I mean that pneu monia in the first degree and of great extent, is generalh' as serious as pneumonia in the second degree but much more circumscribed. Inflammation of the upper lobes is also more perilous than inflammation, to the same extent and degree, of the lower. Of the o-e/?cra/ symptoms, those which we learn independently of auscultation, tho respiration, as a prognostic sign, is the most important. Considerable dyspnoea, whatever may otherwise be the condition of the lung, is alwa)'s a bad omen. We get less help from the state of the pulse. If, however, a feeble pulse goes along with great difficulty of breathing, and if it does not develop itself after the first bleeding, we must conclude that the inflammation is intense, and form therefore an unfav^ourable prognosis. The supervention of delirium is also a discouraging circumstance. You will have inferred already the information which may be gleaned from the character PNEUMONIA. • 571 of the expectoration, in respect to the probable issue of the disease. Great viscidity of the sputa, and a deep rusty colour, announce intensity of inflammation: their return to the catarrhal condition indicates that resolution is going- on. Watery and brownish sputa, more or less like plum-juice, should induce us to suspect suppura- tion of the lung, and are therefore of bad augury. The great instruments to be employed in the trccdment of inflammation of the lungs, are the same which have so often been recommended by me, in other inflam- matory affections, before : blood-letting, tartarized antimonj'-, mercury. Of these, blood-letting is the chief. Both reason and experience attest the especial power of bleeding upon acutfe pneumonia. In the first place it tends to restrain or extinguish the inflammation as inflammation. But, in the next place, it has the effect of re- lieving the particular y»Hc/ion of the lungs. The more blood is sent to them in excess, the more dyspnoea must there be, the more venous blood passing into the arteries, as well as the more risk of the effusion of lymph and the obliteration of the cellular texture of the organ. When we bleed, therefore, in pneumonia, we kill two birds (as a phrase is) with one stone. We do that for the lung, which we do for an inflamed eye when we darken the room, or for an inflamed joint when we keep it absolutely at rest ; i. c, we do all that we can to spare the exercise of the organ, and to prevent aggravation of the inflammation from that cause. And the result of the free abstraction of blood in this disease, fully vindicates the value of a practice which has been pursued for ages. The late Dr. Gregory, of Edinburgh, was in the habit of saying, in his lectures, that provided he was called early to a case of pneumonia, he would be contented to dispense with all other aids than those of a lancet, and water-gruel. I am far from desiring you to believe that blood-letting is the only expedient required ; but certainly the amount of the best experience, ancient and modern, is strongly in favour of its free, and I might almost say, prodigal, employ- ment. Very lately, one most distinguished French writer, M. Louis, has endeavoured to show that venesection has not much control over the progress or event of pneumonia; and I advert to his opinion on this subject merely to caution you against being misled by it ; as you might otherwise be, considering his well-merited reputation as an exact and faithful observer. 1 can only lay down general rules and indications with respect to the manner and amount of blood-letting in this disease, or in any other disease. The abstraction of blood will be effectual, cxlerii paribus, in proportion as it is early ; during the first stage — the stage of engorgement — and before the spongy texture of the lung has been obhterated. The patient should be bled in an upright position, by a large orifice and in a full stream ; and the bleeding should be continued until some sensible im- pression is made upon the system: until the pjilse becomes softer ; or, if it were con- tracted, until it becomes fuller ; until the sensation of constriction is abated, and the dyspnoea relieved ; or until syncope appears to be at hand. Bleeding, in this early stage, often gives very speedy relief, both to the pain and to the dyspnoea. Sometimes the pain does not cease at once, but goes off a few hours afterwards ; but I believe that if the breathing be not at all relieved at first, the case generally (though not always) ends ill. However, you are not to expect that one blood-letting will suffice, even when it is performed early in the disease. Such a favourable case may happen, but not often. The patient should always be seen within four or five hours from the period of the first venesection, that a timely repe- tition of it may take place, if the relief has not been complete, or has not been per- manent. Many fatal cases have probably been fatal from want of this attention; from too long an interval having been suffered to elapse between the bleedings. A vein may be opened, if necessary, two or three times in the twenty-four hours ; and the ultimate loss of strength, and even loss of blood, will be less under such treatment than if the blood-lettings were repeated at longer intervals ; and the necessity of the repetition must be judged of from the circumstances of the case. As an auxiliary to the lancet, I am much in the habit of taking blood from the surface of the chest itself, by means of cupping-glasses, or of a large number of leeches. I believe that much good is done by this local emptying of the blood-vessels. It is particularly indicated if there be pain ; and the part to which the leeches or cupping-glasses are applied 572 PxNEUMONIA. should be determined by the situation of the inflamed portion of lung, when that is ascertained bj' the ear. I scarcely need say that the Avhole of the antiphlogistic regimen must be rigidly enforced ; that the patient must keep his bed ; and that all superfluous exertion of his lungs in speaking must be forbidden. When the inflammation has advanced into the second stage, we cannot expect that the removal of blood will have so decided an influence upon the inflamed and solia parts; but even then, if duly moderated, it will have these good consequences: it will diminish the force of the heart and arteries, and so tend to prevent the exten- sion of the inflammatory process ; it will lessen the whole quantity of blood circu- lating through those portions of the lung which are still pervious, and thus reheve dyspncea ; and it will put the system at large into the condition most favourable for the reabsorption of the lymph by which the air-tubes and vesicles of the afl^ected parts have been blocked up. But a time arrives when bleeding is no longer of use, or when it is positively hurtful ; when it ceases to have any good influence on the local disease, and has aa injurious influence on the whole system : reducing the patient's strength, and inca- pacitating him for bringing up, and ridding his lungs of, the tenacious mucus exhaled by the bronchial membrane. This is what takes place in those cases in which the expectoration is said to be stopped by a bleeding. I have mentioned Dr. Gregory's reliance on blood-letting for the cure of pneumonia ; and I ought to tell vou at the same time Avhat I have been informed respecting the result of his prac- tice. He " used to bleed to the verge of convulsion. His colleague, Dr. Rutherford, seldom went beyond three bleedings, and generally accomphshed his object by two, judiciously timed and measured. His patients recovered quickly; Dr. Gregory's very slowly." We want some remedy, therefore, to assist the lancet, or to employ a'one when the lancet can do no more ; and we have two such, in tartarized antimony, and in mercury. The tartar emetic plan I believe to be the best adapted to the first degree of the inflammation — that of engorgement ; and the mercurial plan to the second — to that of hepatization. I need not tell you that the tartarized antimony is not given in this disorder with the object of producing vomiting.. It is a very curious thing that although, when administered in a considerable dose, its first effect is usually sickness, followed, per- haps, b}^ purging, a repetition of the same dose is, in the majority of cases, at length borne without any further vomiting. The stomach comes to tolerate the medicine as our continental brethren say ; and then its beneficial influence upon the disease is no less marked than when nausea and retching take place. Some patients do not vomit at all; others, the majority in fact, vomit two or three times, and then tolerance is estabhshed. If the sickness and purging go on, they may be checked by adding a few drops of laudanum to each dose. Dr. Thomas Davies, who had tried this remedy largely, and, as he tells us, with great success, gives the following as his own plan of administering it, and perhaps it is as good as any. After free bleeding, he begins with one-third of a grain of tartar emetic in half a wineglassful of water, with a few drops of laudanum or syrup of poppies. Two doses of this strength he gives at the interval of one hour from each other. He then, if the patient does not vomit, omits the opium, but continues it if he does, doubling, however, the quantity of the tartar emetic, giving two-thirds of a grain for two successive hours ; and in this way he goes on, adding a third of a grain every two hours, until he reaches two grains every hour. This last quantity he has not exceeded, and he says that he has continued it for many days without producing any injurious consequences. Under this plan of treatment the symptoms will often undergo a marked change tor the better, in three or four hours. Sometimes, however, the relief is not con- spicuous for twenty-four or even for thirty-six hours. He states, and this is accordant tvith my own experience of the remedy, that the tartar emetic always acts best when it produces no effect except upon the inflammation itself; i. e., when it does not cause vomiting, or purging, or a general depression of the powers of the system. This is an important practical remark, because many persons have supposed that it B'ibdues the disease only when it previously gives rise to these symptoms. I con- PNEUMONIA. 573 sider this testimony of Dr. Da vies to the power of the tartarized antimony in con- trolling inflammation of the lungs the more valuable, because he informs us, that before he had occasion to see its admirable effects in the first stage of pneumonia, he had been in the habit of trusting to the free use of mercury, after due depletion. When dyspnoea has been put an end to by antimony thus exhibited, the medicine may be intermitted ; and if the inflammation shows any disposition to rekindle, it must be again extinguished by a repetition of the tartar emetic. When, however, the inflammation has reached the second stage, that of solidifica- tion, mercury is more worthy of confidence, in my opinion, than tartarized antimony. And I have little or nothing to add to what I formerly said in respect to the mode in which it ought to be administered. The object of giving it is to make the gums tender; and it is expedient to do this as speedily as may be. Small doses of calomel repeated at short intervals — a grain every hour, or two grains every two hours, or three grains every three hours — combined with so much of laudanum or ot opium as may be requisite to prevent it from running off by the bowels — offer the most certain way of accomplishing our object. If the bowels are irritable under the calo- mel, blue-pill, or the hydrargyrum cum creta, may be substituted for it with advan- tage : and if the internal use of mercury is any how contra-indicated, or if it appears slow in occasioning its specific effect,, the linimentum hydrargyri may be rubbed in, or the strong mercurial ointment. Many persons, I am persuaded, are saved by treatment of this kind, pushed to slight ptyalism : the effusion of lymph, tending to spoil the texture of the lung, is arrested ; and the lymph already effused begins to be again absorbed : and the ease and comfort of the patient, as well as the alteration for the better of the physical signs, attest the healing qualities of the remedy. After the inflamed lun'g has become solid and impermeable, the treatment must be regulated rather by the state of the system at large, than by the actual or pre- sumed condition of the lung : we must look more for guidance to the general symp- toms than to the physical signs. If the pulse continues steady and firm, wait pa- tiently the effect of the mercury. But when sunken features, a pallid face, coldness of the surface or extremities, a tendency to delirium, and (above all) a feeble or irregular pulse, proclaim that the vital powers are giving way, it will be requisite, as in other cases where death is threatened by Asthenia, to administer cordial and stimulant medicines ; the carbonate of "ammonia in a decoction of seneka ; wine : and to feed the patient well on milk, or beef-tea. Among what may be called the routine remedies of pneumonia, we must rank counter-irritation by means of blisters. When one is called, in consultation, to see a patient labouring under inflammation of the lungs, Ave may safely speculate upon the conclusion, that bleeding and blistering, and purging by calomel, have all been duly performed. And I beheve that blisters are often apphed to the chest much too early in such cases. In the outset, while there is yet considerable fever present, they add to the irritation, and distress the patient ; and probably tend to aggravate the existing inflammation. They are also attended with this inconvenience, that they interfere with the exploration of the lungs by the ear: and this is not a slight or fanciful dis- advantage ; for the information we receive, by the sense of hearing, of the state of the lung — whether the inflammation be making progress, or receding, or stationary — is of great use in directing the remedial management of the case. But of course ihis is a consideration not to be put in competition with the benefit which may be expected sometimes from a blister. When the fever is no longer high, and the skin no longer burning, but the expectoration is still difficult, the dyspnoea considerable, and a sensation of pain, or tightness, or oppression, is experienced in the chest, then a large blister is often productive of very sensible benefit ; but it should be a large one. The patient should have a waistcoat almost, or at any rate a breast-plate, of blistering-plaster. 1 have never seen such good effects from placing blisters upon distant parts in this disease, upon the thighs or arms for instance, as would lead me to plague the patient with them in those situations. Purgatives are of less certain value in pneumonia than in many other mflamma- tory diseases ; and less, especially, than in cerebral inflammation. Still, it will ahvay* 574 PNEUMONIA. be right to give an active aperient at the outset, and afterwards to take care that the bowels be unloaded at least once every day. A continued drain by purgation would not consist at all with the mercurial plan, which promises to be most useful when the inflammation has already reached the stage of hepatization. ^J'his, then, is the outline of the treatment which is most likely to save the life of those who are afiected with acute idiopathic pneumonia. Different cases will require different modifications of it ; for which, I repeat, no particular rules can bo laid down. All that I have hitherto been saying relates to acute pneumonia, occurring in a previously healthy person. But pneumonia having that character, and so occurring, is a much less common disorder than most persons appear to suppose, or than I for- merly thought it to be. I have been surprised to find how few cases of pure idiopa- thic inflammation of the lungs present themselves among my hospital patients. Five or six in the year are as many as I see there. Intercurrent pneumonia, however — pneumonia engrafted upon some other^re-existing disease — is abundantly frequent ; and requires, in general, a much less vigorous and more wary plan of treatment. Inflammation of the puhnonary substance is apt to supervene insidiously upon various disorders which are of every-day occurrence: upon bronchitis, upon phthisis, upon disease of the heart, and upon fevers, especially the exanthematous fevers. In these cases, while the physical signs are necessarily the same as in the unmixed acute dis- ease, the general symptoms are often but slightly pronounced. During the progress of continued fever of a low type, inflammation may steal upon the lung, and run quickly through all its stages, and spoil the organ irrecoverably, without giving any notice of its presence ; unless, indeed, you suspect, and search for it with your ear The pneumonia is said, in such cases, to be latent. It seldom needs, the associated disorder would seldom bear, any active depletion. Much benefit often follows the abstraction of small quantities of blood ; but they should be taken from the surface of the chest by the cupping-glass, and not by the lancet from the arm ; and it is often good practice thus to aim at reducing the local mischief with one hand, while with the other we support the patient's strength by means of ammonia, wine, and nour- ishing broths. Bhsters are also of service ; more so than in the sthenic forms of pure pneumonia; and they may be apphed at an earlier period. In conjunction with ihese remedies, I should advise the cautious employment of mercury. When the convalescence from acute pneumonia is decided and real, it is shorter -than might have been supposed. From the period when the pulmonary inflamma- tion is fairly over, the strength returns with unexpected facility, even when large bleedings have been practised and repeated. But we have to guard, more perhaps in this disease than in most others, against false or merely apparent convalescences. A patient can never be pronounced perfectly secure so long as any trace of crepita- tion remains in the aff*ected lung ; and this may often continue long : nay, it not unfrequently ceases only upon the supervention of another more surely fatal, though less rapid disorder, viz. : tubercular consumption ; of which, however, I must treat as a distinct disease. [PxEUMOXiA IS Childrex. — Pneumonia is a very frequent disease of childhood ; and as It is then marked by some very important mouifications in its general characters and results, it demands a separate consideration. The inflammation may be confined to the minute lobules of the lung, or it may attack the pulmonary lobes. The first constituting lobular, and the second lobar pneumonia. In both forms of the disease the inflammation may be confined to a small portion of one lung, oi extend to nearly the whole of one or both. In very young children the symptoms of pneumonia, particularly at the commencement of tlie attack, are very obscure, and even when more distinctly marked, they differ but lit- tle from those of bronchitis. In infants the attack is very generally preceded by symptoms of a mild bronchitis, to wnich there usually succeeds a chill, differing in its severity and duration in different cases ; this is followed uy increased heat and dryness of the surface, increased frequency of pul?e, accelerated respiration, dyspnoea, and a short dry cough. These symptoms quickly augment in intensity — the lips become of a bright red, the tongue of a florid hue, and somewhat dry, »nd coated along its centre with a thick white fur. Often there is from the commencement of the attack vomiting, and, in young children, diarrhoea. In many cases there is considera- PNEUMONIA. 575 ble agitation and anxiety, in others decided drowsiness, and more rarely con-v-.;.sions ; these fcre scraetimes violent and repeated, and often followed by an entire loss of consciousness. Convulsions, according to the observations of Rilliet and Barthez, are confined to cases occur- ring in young infants, where the inflammation is seated at the summit of the lungs. In infants at the breast, in the early period of the attack, the breathing is no longer affected solely through the nose, but the little patient lies with the mouth partly open, and drawing in the air through it. The tongue becomes in consequence preternaturally dry, and the cliild sucks by starts — seizing the nipple with eagerness, sucking for a few moments with greedi- ness, and then suddenly dropping the nipple, and in most instances commencing to cry or moan. The inspiration in children affected with pneumonia is marked by a peculiar abruptness, occurring suddenly before expiration is completed, and with a more or less dilatation of the nostrils. The frequency of the respiration is not always in proportion to the violence of the attack, and does not always increase with the progress of the disease. When pneumonia occurs in the course of chronic enteritis, there is often either a very slight or no acceleration of respira- tion ; it rnaj', also, be masked by an accompanying atlection of the abdominal organs or of the brain. In cases of broncho-pneumonia, the dyspncea is often so intense as to threaten Euflbcation. The dyspncea is always proportionate to the violence and extent of the pulmo- nary inflammation, and augments with the progress of the disease. It is often attended with great anxiety, and a sense of impending suflbcation which renders a recumbent posture insupportable. The cough is at first frequent, short, dry, and painful, but soon becomes moist; when ex- pectoration occurs, which is seldom the case in young children, it is, at first, slight, and con- sists of a whitish, viscid mucus, which becomes subsequently reddish. It is rarely, however, rust coloured. As the cough becomes more moist, it gradually declines in violence until towards the eighth or ninth day, when it rapidly diminishes, and finally disappears. When, however, the pneumonia becomes more difl'used, or occiirs in the course of some acute aflec- tion, and in children not much debilitated, the cough is very frequent and intense, and is rarely attended with a free expectoration. The attacks of pneumonia that so frequently occur in the course of chronic enteritis, are seldom attended with much cough — occasionally, indeed, it is entirely absent. There is seldom any very decided pain of the chest — when present, it is generally acute, though occasionally dull, and is usually experienced at the ante rior margin of the axilla — it is a/jgmented by the cough, and often disappears long before the Other symptoms. The disease in these cases is so often destitute of leading symptoms, that its existence might be overlooked, were it not for the physical signs revealed by auscultation — the skin is pale and cool, the pulse small, and the face and extremities cedematous. In young children, or those under six years of age, pneumonia is frequently preceded by extensive bronchial inflammation. The inflammation of the lungs, which is probably pro- duced by the extension of the inflammation from the extreme branches of the bronchi to the preliminary tissue, often comes on so gradually, that it is impossible to fix in most cases the exact date of its occurrence. Occasionally, at the period the pneumonia supervenes, there is a well-marked accession of fever and dyspncEa, and an aggravation of all the symptoms. The febrile symptoms are less than in the other forms of the disease, but the dyspnea and distress are usually greater, and the face presents from the first a more livid hue. The cough is less hard, but often occurs in paroxysms which greatly distress the patient; th« respiration is more hurried and irregular ; the irregularity coming on at an earlier period. Head symptoms are more frequent, the patient's rest is disturb?d, and he often mutters in his sleep, and has far more restlessness and jactitation when awake. Convulsions and coma more frequently precede death, which occurs at an earlier period than in the other forms of pneumonia. Pneumonia in children is generally attended with loss of appetite and increased thirst, and a torpid state of the bowels ; when the disease, however, is complicated with enteritis, profuse diarrhoea may be present throughout the attack. In these cases furunculi or ecchy- moses occasionally cover the skin, while the blistered surfaces are liable to become ulcerated. In favourable cases of primitive bronchitis, the acceleration of pulse and respiration attain their greatest intensity generally by the end of the fourth, fifdi, or seventh day, o:, at the farthest, by the ninth day: when the heat of the skin and the frequency of the pulse diminish, respiration becomes slower, and the inspiratory movement is unattended with dila- tation of tlie nostrils. The cough becomes more free and moist, the fever quickly disap- pears, the face becomes paler, and the expression of the countenance more natural. The respiration finally assumes its normal rhythm, the cough rapidly diminishes, and in a few days convalescence is fully established. In the more severe and unfavourable cases, there is intense dyspnoea from the very com- mencement of the attack — intense anxiety, a pallid hue of the face, with a violet tinge of tli« lips and summits of the cheeks, an extremely small, rapid pulse, and a frequent, short. 576 PNEUMONIA. dry, painful cough. The general symptoms continue to augment in violence, and death may occur on the third or fourth day. In other cases, the symptoms, from the beginning of the attar k, are less intense, and do not increase in severity after the fifth or sixth day, but remain, as it were, perfectly stationary. Soon, however, in addition to the cough and dyspnoea, there occur pallor of the face, great emaciation, and constant diarrhoea ; and, at the termination of from three to four weeks, the patient, being reduced to a state of the utmost debility, expires. In other cases, again, after all the prominent symptoms have declined, and a speedy conva- lescence is anticipated, from some accidental cause, the inflammatory action is re-excited in the lungs, the dyspnoea, cough, acceleration of the pulse, and fever, return with increased violence, and deatli speedily ensues. The fatal termination may also be hastened by the occurrence of pleurisy, measles, gangrene of the mouth, &c. Acute pneumonia, occurring in the course of some other acute disease, is generally of rapid progress, and terminates either in health or fatally, within a few days. The physical signs of pneumonia, occurring in children, are of primary importance. By them alone, in many cases, can a correct diagnosis be established — while it is only by them, also, that the extent and progress of the local disease can be determined. In simple primitive pneumonia of children, if of the lobar form, there are present, from the very commencement of the attack, crepitant ronchi; and often bronchial respiration on one side the thorax towards its base. The crepitus is generally larger than in adults. If for a short time it cannot be heard, it may be generally reproduced by causing the child to cough, when it is again to be distinguished, in the strong inspiration which .-;.oceeds the cough, the sound resembling the cracking of a whip. In the lobular form of pneumonia, the subcrepitant ronchi are more generally diffused, while the bronchial respiration is seldom heard. The extent of the latter increases with the progress of the inflammation, while the ronchi decrease. When the acceleration of the respiration and pulse has attained its maximum, the bionchial breathing is very audible, and is accompanied with bronchophony, or with a resonance of the voice and extensive dulness of the chest. As the general symptoms decline, and the cough becomes more moist, the subcrepitant ronchi are very abundant, antl the resonance of the voice extends over a greater space ; the bronchial breathing continues, but the dulness of the chest diminishes. Even after convalescence is established, a slight prolongation, as well as a different resonance of the voice, is still perceptible. The respiration continues feeble for several days, and only slowly recovers its proper vesicular tones. In more violent cases, humid ronchi are heard throughout the chest, intermixed with others of a drier character, or with bronchial expiration and a diflused resonance of the voice. Bronchial breathing is ahvays a very grave sign. In eleven out of twenty cases in which it was detected by Dr. West of London, the disease had a fatal termination. The mucous ronchus is heard in most cases of broncho-pneumonia in children, and in cases of lobar pneumonia, in the neighbourhood of the subcrepitant ronchus, and occasionally wheru distinct bronchial respiration exists. It often persists for a long time after every other sign of disease has disappeared. In the lobular pneumonia of young children, the physical signs are at first limited to the mucous and subcrepitant ronchi, dependent upon the increased secretion of mucus in the bronchi. The subcrepitant ronchi are frequently continued throughout the attack, being often the only stethoscopic signs present. They are rarely replaced by the fine crepitant ronchi, as in the pneumonia of adults. Bronchial respiration becomes developed when induration has extended to a considerable portion of the texture of the lungs. It is chiefly heard at the upper and middle portions of their posterior parts — it is rarely heard in the lower lobe, from the comparative smallness of the bronchi, and their early obliteration by the progress of tlie inflammation. The respiratory sounds are very peculiar — the inspiratory murmur, in place of being full and expansive, as in a healthy chikl, is short, obscure, and almost without the vesicular murmur, and may or may not be accompanied with the mucous or subcrepitant ronchus; the expiration is rarely distinct, unless the bronchial respiration is fully developed, when it is usually louder than the inspiration. The sounds indicative of inflammation of tlie texture of the lung are often entirely obscured by the mucous ronchi of bronchitis. The anatomical lesions in the pneumonia of children differ very materially, according as the inflammation is lobular or lobar, and according to the period of the disease when death takes place. In lobular pneumonia the lung is usually soft and flaccid, of a mottled appearance exter- nally; patches of a deep red or violet colour, generally distinctly circumscribed, of a circular or ovai form, hard to the touch, and slightly projecting, being interspersed in the midst of the natural grayish red tint. They are commonly situated at the inferior edge of the lung, bii4 may occupy other portions of its surface. The part occupied by these patches does not col- lapse upon the chest being opened. lu some cases this marbled appearance of the lung is absent; but spots of induration, more 01 less deeply seated, may be detected by the fingers, giving to the lung an uneven or knotted i"eel. PNEUMONIA. 577 The same marbled appearance is presented by a section of the lung. The dark patches aie more or less accurately circumscrilicd in the first stage of the disease; they are firmer than the surrounding tissue, swim when thrown into water, crepitate beneath the finger, and. however carefully separated from the sound portion of the lung, yield upon pressure a red- dish fluid intimately mixed with air. In the second stage the dark patches form nodules of a firmer and more compact consistence. Tlieir cut surface is smooth, and when carefully detached from the surrounding parts, they crepitate none or but slightly, and sink rapidly when thrown into water. When the central portion alone of the nodule is subjected to pressure,- a red sanious fluid escapes without any admixture of air. It is seldom that single lobules are found affected, the induration usually comprising four or five, forming a mass of the size of an almond. If the patient lives for some time, the intervening substance usually becomes affected, and the lobular is converted into lobar pneumonia, and the inflammation runs its course, as in the ordinary cases of this latter form of the disease. In the third stage of the disease, the section of the lung presents a grayish colour, inclining more or less to yellow in diflerent cases. The pulmonary tissue is friable, and when pressed gives discharge to a purulent fluid, its texture being infiltrated with pus. Upon minute examination, some of the lobides will be found more projecting than others, their vesicles not being compressed, as in the less projecting parts. According to Barthez and Rilliet, there are two forms of lobular pneumonia. In the first, which they denominate tlie mammelonated, is marked by nodules of hepatization, comprising one or more lobules, differing but little in colour and appearance from the surrounding tissue. Their limits are well defined, even when the neighbouring tissue is engorged. They are frequently surrounded by a layer, of about half a line in thickness, white, firm, and of a fibrous appearance. The hepatized portions slightly project above the surface of the incised lung, from the collaiise of the surrounding air-cells. They vary in size from that of a hemp- seed to that of a pigeon's egg. They are of a spheroidal form, and have usually a regular surface. But a single nodule may exist in one lung,'or there may be from twenty to thirty or more. They are almost invariably surrounded by a circle of pulmonary tissue in a state of engorgement. The diseased portions generally attain the third stage of pneumonic hepa- tization, which terminates in the formation of an abscess. In the same lung there may exist nodules of hepatization in the first and second stages, and also rounded masses of a straw colour, very humid when cut into. At a more advanced stage, the pus, which is at first deposited in the interstices of the pulmonary tissue, becomes collected in the centre of the nodules. This minute collection of pus is surrounded by two concentric zones, the internal one yellow — hepatization of the third degree; — the external one red — hepatization of the second degree. At a later period, the size of the abscess is increased at the expense of the inner zone, the outer zone at the same time passing into sup- puration. At a still later period, an incision through the diseased portion of the lung reveals cavities varying in size from a few lines to four or five. These cavities are in general round, more rarely oval, and contain usually a thick tenacious yellow or greenish pus, perfectly free from any admixture of air. Sometimes small coagula of blood are mixed with the pus These cavities are at first formed by a layer of hepatization, lined with a layer of concrete pus, or with a false membrane, yellow, soft, and easily detached. Subsequently, this mem- brane becomes changed into a thin, smooth, polished tissue, analogous to a serous membrane. The abscesses sometimes communicate freely with each other, and at the point where the bronchi penetrate their cavity, its mucous menrbrane presents a true solution of continuity. When the inflammation invades separately several neighbouring lobules, the cavity of the abscess is multilocular, each cell being isolated by a lamina of the hepatized tissue, upon the rupture of which the different abscesses communicate with each other. These abscesses have usually a tendency to approach the surface of the lung. An adhesion often takes place between the opposing surfaces of the pleura, or the pleura of the lungs becomes gradually thinned and finally perforated, giving rise to a true pneumo-thorax. It has hai)pened, that an adhesion has formed between the lung and diaphragm, and the abscess of tne lung has thus communicated with the peritoneal cavity. These abscesses are often completely iso lated, and, with the exception of the thin layer of hepatization in their immediate vicinity, are surrounded with a perfectly healthy pulmonary tissue. Occasionally, liowevor, they per- vade the great portion of the whole of one of the lobes. Their size is ordinarily in inverse proportion to their numbers. In the greater number of cases, they are confined to one lung, and are more frequent in the left than the right. They are met with most frequently in chil dren imder six years of age. Partial, which is the second form of lobular pneumonia, is much less circumscribed than the preceding. Indistinct limits exist between the healthy and diseased portions, and the disease occupies a larger portion of the lungs. The diseased portions may throughout havo reached the second stage, or at the centre alone, the circumference being still in the first stage, nn<' this being in contact with several other portions of the lung, in a similarly dis- eased condition: nearly the whole of an entire lobe may present an admixture of the c'laiac, 37 2y 578 PNEUMONIA. teristics of pneumonia in the first and second stages, and when the disease has reached the .hird degree, it is strictly lobar. In the major part of the cases, lobular pneumonia is double — the disease, however, being frequently much more extensive on one side than the other. A union of the three forms of pneumonia — mammelonated, partial, and general — is often met with in the same patient. The lirst is equally frequent in every portion of both lungs, while general pneumonia is far more frequent in the inferior lobes. Partial pneumonia is often disseminated throughout the three lobes — it is.more frequent, however, in the inferior. Mammelonated pneumonia is of much more :are occurrence beyond the sixth year than partial pneumonia, while general pneumonia is still more rare than the former between the sixth and fifteenth years. (Se« Barthez and Rilliet — Maladies des Evfants, t. i., p. 61.) borne doubts have been suggested as to all the changes in the texture of the lungs, de- scribed as characteristic of lobular pneumonia, being actually the result of inflammation. For the investigation of this subject, the reader is referred to the Editor's Treatise on the Dis eases of Children, 2d edit., p. 282. The anatomical characters of lobular pneumonia in children are the same with those met with in the pneitmonia of adults. .Inflammation of the bronchi, particularly of tlie smaller bronchial ramifications, pleurisy, and emjihysema of the lungs, are common complications of pneumonia in children. The lobular form of pneumonia is the most frequent during childhood — it is also the most serious at that age. Lobar pneumonia occupying only one lung, when it occurs in children between six and fifteen years of age, whose health has not been impaired by previous disease, unless compli- cated by some secondary affection is not a very fatal disease, if judiciously treated from its commencement. Its serious character is however greatly enhanced by its being complicated with other diseases. The most common of these are measles, hooping-cough, chronic ente- ritis, and small-jiox. Pneumonia in children is produced by the same general causes, as give rise to it in adults. It is common to both sexes, but more frequent iu boys. It is particularly liable to occur in the same child after a shorter or longer interval. In the treatment of the pneumonia of children, bleeding will very generally be demanded in the commencement of the attack. In young children leeches or cups should be applied to the anterior parietes of the chest, beneath the clavicles, or between the shoulders. Their number should be proportioned to the violence of the symptoms, and to the age and strength of the patient. In older children, however, bleeding from the arm should be preferred. The amount of blood drawn must be proportioned to the extent of the disease. The propriety of repeating the bleeding will depend upon circumstances. When the first bleeding has been well timed and carried to a sufficient extent, a second will seldom be required ; when- ever, however, the leading symptoms, particularly the dyspnoea, continue with little abate- ment, we should never hesitate to repeat the bleeding, either from the arm, or by leeches or cups, according to the violence of the remaining symptoms, the age of the patient, and the amount of strength remaining. It is, however, in the early period of the attack alone, that any very decided advantage is to be expected from blood-letting; in the more advanced stages of the disease, it will seldom be beneficial or admissible ; though cases may occasion- ally occur, when the cautious application of leeches or cups to the chest or between the shoul- ders will be attended with marked relief, even after the disease has existed for several days. In the commencement of the attack, if the bowels are active or torpid it will be proper to administer a full dose of calomel, to be followed in a few hours, by a dose of castor oil, or in robust children, over three years of age, a mixture of equal parts of magnesia and epsom salts. Subsequently the bowels should be kept regularly open by enemata, or occasional doses of some mild purgative ; a grain of calomel, with half a grain each, of ipecacuanha and extract of hyosciamus, administered twice or thrice a day, will usually effect this object. Costiveness is not, however, very common in the pneumonia of infants; an opposite state of ihc bowels is a more frequent and troublesome symptom. Subsequent to blood-letting, in robust children over three years of age, tartarized antimony, jijven in small doses during the day, will be found highly beneficial. But in younger chil- dren antimony in any form is a dangerous remedy, more particularly when there is any tendency to disease of the alimentary canal. Small doses of ipecacuanha and calomel will be found very generally to act beneficia'.Iy in allaying the cough, dyspnffia, and general restlessness, and may be given to the youngest patient without any inconvenience resulting; adding to each dose a minute portion of powdered digitalis will in most cases be found ad- vantageous. Occasionally the calomel will purge; should this be the case it will be neces- sary to add to it a grain or two of Dover's powder. After the violence of the disease has been considerably abated, we have found advantage from the administration, every three hours, of small doses of calomel, ipecacuanha and hyosciamus. Under the same circum- stances the compound honey of squill may be given. To children over three years of age it PLEURISY. 579 Is well adapted to allay the cough and dyspncea: to the dose given in the evening a few cirops of paregoric may be added. Blisters to the chest are certainly very important remedies in the pneumonia of children. In violent cases occurring in patients over five years of age, particularly when attended with much febrile excitement, they should not be applied imtil the violence of the symptoms have been abated by direct depletion ; they should be kept on no longer than is necessary to pro- duce, a decided redness of the skin; they should be then removed and the reddened surface covered with a soft emollient poultice. In infants, as well as in slight cases, and in those occurring in children of a delicate frame or who are much debilitated, in place of a blister a thick slice of bread, dipped in vinegar and lightly sprinkled with powdered mustard, should be applied to the chest, and removed as soon as it has reddened the skin. Warm sinapired pediluvia, or a sinapired hip-bath, will often produce a favourable revul- sion from the -'ungs, and may be frequently repeated. In stubbon; cares Dr. West speaks highly of mercurial inunction; under its employment, he has seen vecoveiy to take place even where the circumstances had seemed to warrant a more unfavourable prognosis. The full value of mercurial inunction is seen in cases which have been neglected until c!ie time for depletion has gone by, the patient having becoifie exhausted, and the employmeni, oi calomel is forbid by the presence of diarrhcea. Dr. West employs it in the proportion of oris drachm, rubbed into the thighs and axilla every four hours, in children of four years of age. He has never seen salivation to be induced by it, but he has observed the disease gradually to diminish in severity during its employment, and the solid lung, to become once more permeable to air. When in the advanced stage of the disease there is great exhaustion, with symptoms of impending suffocation, the use of carbonate of ammonia has been strongly recommended — but under such circumstances, there can be but little hope of the patient's recovery. In chronic cases, our chief dependence is upon revulsives, applied either upon the chest, or upon the surface generally, and perhaps upon a judicious mercurial course, particularly by inunction. In all cases of pneumonia, the exhibition of some mucilaginous drink, in small portions, and at short intervals, will be found to abate, very sensibly, tlie cough, and relieve the dry- ness of the fauces, which, in the early stage of the disease, is often a harassing symptom. A solution of gum acacia, or the mucilage of the elm bark, or pith of sassafras, sweetened, will be the best we can employ. The diet of the patient, in the earlier period of the more acute cases, should be confined, almost exclusively, to these mucilaginous fluids — after the violence of the disease has been subdued, plain water gruel, arrow-root, or tapioca, may be allowed. When the disease oc- curs in young infants, they should be taken from the breast — the mother's milk being given to them in moderate quantities by means of a spoon, as well to prevent their stomach from being overloaded, as to guard against the mischievous effects of the violent exertion of the respiratory organs in sucking. The patient should be kept in a clean, well ventilated, and moderately warm apartment. It is all-important to guard him from cold and dampness, and from sudden transitions of temperature. He should be placed upon his bed or couch in a half-recumbent position, in order to render the respiration more easy, and to prevent the injurious consequences resulting from the stasis of fluids in the posterior portion of the lungs. AVhen the disease has arrived at an advanced stage, or involves a considerable extent of the lungs, the patient should be moved with the greatest care and gentleness, lest convulsions be induced. After convalescence is fully established, gentle exercise in the open air, in mild, dry wea- tlier, may be taken ; but, for a long period, the utmost care should be observed to guard against exposure to cold and dampness ; and while a gradual improvement is made in the diet — if the child be weaned — all rich, stimulative, and indigestible food must be avoided, as well as the slightest excess in the use of those articles that are allowed. See Condie on Diseases of Children, 2d ed., page 274, et seq. — C] In the next lecture I shall speak of pleurisy. LECTURE LII. Pleurisy. Its anatomical chtiraders ; false membranes; liquid effusion ; effects of these tipon the shape and contents of the chest, and upon its healthy sounds. Symptoms of Pleurisy. I PROCEED this afternoon to the subject of pleurisy, having in the last lecture con- cluded 'what I had to say on that of pneumonia ; that is. I pass from inflammation 580 PLEURISY. of the substance of the lung, to inflammation of its investing membrane. The two frequently exist together ; but, when that is the case, the one predominates greatly- over the other. Pleurisy, however, without pneumonia, is much more common than pneumonia without pleurisy. When both are present, and the pneumonia predomi- nates, the term pi euro-pneumonia is applied to the compound disease. The whole interest of such a case merges in the pneumonic inflammation. Again, when both are present, and the pleurisy predominates, the compound affection is sometimes called pncumo-pleuritis. The pleura, as you know, is one of the serous membranes. Its inflammation is attended, therefore, with those events which I formerly took some pains to describe as belonging especially to that particular tissue. The inflammation is of the adhe- sive kind : it is accompanied by pain, by the pouring out of serum, of coagulabla lymph, of pus, or of blood, I think it will be best, in this instance, also, to lay before you some account of the morbid anatomy of the disease, before I consider it's symptoms. The alterations that take place in the inflamed membrane itself are not very striking or important. Experiments upon living animals, made by introducing some foreign substance, or injecting some slightly irritating liquid, into the cavity of the pleura, have proved that, as in other cases, inflammation is attended with redness of the part affected. But it is scarcely ever that we observe this effect alo7ie of inflam- mation, in the pleura of a dead person ; unless, indeed, he has died of some other Complaint while he happened to have incipient pleurisy. The pleura has been said to be thickened by inflammation ; but that I apprehend to be, a mistake. It often appears to be thickened, in consequence of the superposition of a false membrane — a layer, or several layers, of plastic lymph. But actual thickening of the pleura itself seldom or never happens. Neither does the pleura easily soften, or readily ulcerate, under inflammation. It peels off", in some cases, from the lung, or from the ribs, with more facility than in the sound state. The most remarkable effects of pleurisy result from the effusion of coagulable lymph, or of serous fluid, or of both, into a shut sac, having peculiar anatomical relations. One part of the membrane lines the firm walls of the chest ; the other part envelops the soft and compressible lung. The opposed surfaces of this closed and empty bag being opposed also, but freely movable one upon the other, very dif ferent, and even contrary, effects may be produced by its inflammation. The pul monary pleura may be glued to the costal pleura, so as to prevent all lateral move ment between them, and to obliterate the pleural cavity ; or the two surfaces of the membrane which are naturally in contact, may be forced unnaturally apart by a pouring forth of serum between them ; or the opposite surfaces of the pleurae may be united by coagulable lymph in some places, and separated by effused fluid in others. And great difl^erences will arise in the symptoms, and in the gravity and tendency of the complaint, according as one onanother of these different conditions of the contents of the thorax is established. Let us first consider the effect of the throwing out of coagulable lymph only ; or, of what comes to the same thing, the effusion of coagulable lymph with a small quantity of serum, which last is soon reabsorbed. One consequence of this is the formation of false membranes. These, indeed, are formed whether there be much or little serum poured out. We continually meet with them, sometimes when we least expect to do so, in the dead body. They vary greatly, in different cases, in respect to their thickness, situation, extent, organization and effects. When the lymph is first deposited upon the free surface of the inflamed pleura, it is soft, and of a grayish-white colour, like paste somewhat. It soon, however, acquires an increase of consistence, and shows marks of vitality ; becomes, in short, organized. Red points begin to appear in it, few in number and widely separated, at first ; but they presently multiply, and lengthen into reddish streaks, which run aiong the surface of the efllised matter. Soon these red streaks may be perceived to be slen-ler vascular canals ; and at length they inosculate with the vessels of the pleura, and the lymph, converted into a false membrane, becomes a constituent par* nf tne livinp- frame. PLEURISY. 581 It is curious, and useful too, to know how rapidly this work of organization may go on. Andral made experiments upon the pleuroe of rabbits, by injecting acetic acid into them. He sometimes found, at the end of nineteen hours, soft and thin false mem- brane, traversed by numerous anastomosing red lines. In other rabbits, placed under circumstances which appeared to be exactly similar, no such result had taken place at the end of a much longer period ; but the pleura contained only a serous or puriform liquid, mixed with unorganized flakes of lymph. Now similar differences have been remarked in the human subject, under disease. False membranes, already vascular, have been found in the bodies of persons who died of pleurisy after a very few days' illness : while in other patients, who had lived for many months after the invasion of the disease, there has been no trace of such vascular membranes. It is clear, therefore, that the organization of the lymph does not de- pend solely upon the length of time that has elapsed from the period at which it was poured forth. It has much more to do with the previous state and habit of the patient. Cseteris paribus, plastic lymph and early adhesion are more to be expected in young, strong and healthy persons ; curdy unorganized lymph, granular deposits, with copious and abiding serous effusion tending to become puriform, in such as are old, feeble, cachectic, and scrofulous. The extent of these false membranes varies according to the extent of the inflam- mation which has produced them. When that has been general, they cover the whole lung, and line the whole costal surface, and spread themselves over the diaphragm and mediastinum of the same side. Supposing that there is no serous liquid effused, or that it is absorbed, the lung then becomes everj'where adherent to the sides of the cavity which contains it. The medium of adhesion, which is soft and tender while it is recent, grows firm, and assumes the characters of areolar tissue, when the union is of old standing. The thickness of the false membranes is also extremely variable. Sometimes it 1 not more than that of the pleura itself, and the lymph might then, in the absence ot adhesion, be almost overlooked. But in the majority of cases their thickness is much greater than this. Frequently several distinct layers or strata are seen, superposed one upon another, to a considerable depth. Are there any auscultatory signs of this process of adhesion when it occurs? Yes. There is a morbid sound not hitherto mentioned by me, whereby it is sometimes dis- closed : the sound, namely, oi friction ; the sound produced by the rubbing together of the dry, or inflamed and roughened surfaces. You doubtless are aware that every time a tolerably deep inspiration takes place, the relation between the ribs and the lung undergoes a change. While the ribs are elevated, the lung descends a little : and consequently any given point of the surface of the lung is no longer in contact with the same point as before of the thoracic parietes. You may convince yourselves of this fact by carefully making a small incision through an intercostal space, in a living animal. Now the pulmonary pleura, when that membrane is inflamed, does not slip and glide over the costal in its usual smooth and noiseless manner ; but it makes a creaking or rubbing sound, which the ear, applied to the corresponding sur face of the chest, readily catches. I have many times heard this; yet it is not at all a common sound : indeed I had heard it, in one instance, some time before I knew what the noise meant. The sound has, mostlj^ an interrupted character, occurring in a series of three or four jerks. The patient is often made aware of the harsh movement, by some internal sensation ; and a bystander, who places his hand flat upon the corresponding surface of the thorax, may sometimes feel this grating of the membrane upon itself. You may wonder, as adhesions are so common, that this sound, and these sensations are not oftener heard, and felt. In truth, they are tran sitory phenomena, and cease, of necessit}', as soon as adhesion prevents any further motion of the opposed pleurfe upon each other. If we do not happen to listen during that period, usually a short one, in which the pleurcc, roughened by inilaiamntiou and effused lymph, but not separated by liquid, still chafe against each other, we lOse the opportunity of hearing the sound at all. This rubbing sound, this noise of fiiciion, we shall find to be of greater importance in relation to certain diseases of 2y2 582 PLEURISY. the heart, than m cases of acute pleurisy. In pleurisy the liquid matters poured into the membranous sac have far more interesting consequences : and to these I now beg your attention. In some instances we find, after death, a clear serous, or watery fluid, without colour, or of a pale lemon colour, and perfectly limpid and transparent. This may occur independently of inflammation of the pleura ; from some mechanical obstacle to the circulation. It then constitutes a species of dropsy; a true hydrothorax : and this, though less common than ascites, is by no means an uncomxnon conse- quence of disease of the heart. When the efflision does not proceed from a cause of that kind, it is always, probably, the result of inflammation of the pleura itself, although we may find only a slight degree of redness upon its surface, or a few patches of coagulable Ij'mph. More frequently, besides this clear hquid, with flakes of albuminous matter floating in it, there is also a coating of lymph on the inflamed membrane. Very often the thinner fluid is turbid, or whitish, like whey ; sometimes it is distinctly puriform ; sometimes it is tinged more or less deeply with blood ; sometimes it consists of nothing else but blood, which has separated into the serum and crassamentum. There being no wound, nor visible rupture, of large or of small vessels, we conclude, in such cases, that the blood has exuded, or been exhaled, from the membrane. The different kinds of fluid effused into the pleurce are alwa)'s, or almost always, without smell ; — provided that it has remained a closed bag : I mean when no com- munication has been established between the cavity of the pleura and the external air, either through an opening in the walls of the chest, or through a pulmonary fistula leading to the trachea, or through some breach of the oesophagus. I have met with but one exception, and that a doubtful one, to this rule. A patient died in the hospital, who, some years before, had nearly killed himself by swallowing, in mistake for beer, a solution of caustic potass. The result of this had been ulceration, and subsequently stricture, of the gullet. His left pleura was perfectly full of most stinking pus ; and we were unable to detect any channel of communication with the outward air, although the circumstances of the case rendered it not improbable that such a channel might have existed. Sometimes air, or gas, is found in the cavity of the inflamed pleuia; either alone, or (what is much more common) together with a liquid. We ascertain this fact, in the dead bod3% by the hissing sound that takes place as soon as a penetrating inci- sion is made between the ribs ; or by opening the thorax under water, and noticing the escape of air in the form of bubbles. It is probable that these gases are some- limes secreted or exhaled from the diseased membrane ; sometimes they are the pro- duct of decomposition within the cavity; but, for the most part, they are met with only when the sac of the pleura communicates somehow with the external air. Such being the fluid matters that frequently occupy the cavity of the pleura when that membrane has undergone inflammation, let us next examine the necessary effects of their being collected in that part. These efl^ects \\'\\\ obviously vary considerably according to the quantity of the fluid that accumulates. Now the quantity of fluid may vary from less than an ounce to several pints. At first it is lodged in the cavity of the pleura solely at the expense of the yielding lung, which is compressed to make room for it. But if the quantitj'- continues to augment, other parts at length displaced by the increasing pressure, the boundaries of the chest on that side are stretched, and even the abdominal viscera are thrust out of their natural position. The lung is pushed back towards the mediastinum and vertebral column, and flattened, and brought to lie in the smallest possible compass ; the diaphragm is forced downwards, which sometimes gives rise to a considerable promi- nence of one or the other hypochondrium, the spleen and stomach being displaced on the left side, or the liver on the right. The ribs are separated too; the intercostal spaces become wider, and are pushed out to the level of the bones, and the whole of the afiected side is smooth and obviously larger than the other. The mediastinum also undergoes some chansre of position, being driven more or less towards the side opposite to that on which the effusion exists. If the liquid happens to fill and distend the left side of the thorax, the heart may be moved out of its natural place, and be PLEURISY. 583 heard, and felt, and seen to beat on the right of the sternum. Andral mentions having met with only one instance of that kind. I suppose that I cannot have wit- nessed less than a dozen such. So again the heart may be carried beyond its proper place, to the left, by a large effusion into the right pleural cavity. I say when the liquid is accumulated in very considerable quantity, the luno- is pressed into the form of a thin cake, which occupies a very small space alono^side the vertebral column : and if it happens to be covered over and concealed, as it often 'is, by a strong layer of adventitious membrane, we might fancy, at first examination, that it had completely disappeared. It was in cases of this kind— especially whea the effused fluid consisted of pus — that the lung was erroneously represented by the older observers as having been destroyed by suppuration. However, you will always find the lung there if you take the pains to look for it, and to divide the false mem- branes that bind it down : and, in many instances, it is sound also. Its surface may, indeed, be wrinkled, but the lung itself is capable of being restored to nearly its former volume by insufflation, as- it is called; by blowing air into it through the principal bronchus of that side. In this compressed state the lung does not crepitate- under the finger : it is dense, and sinks in water ; in fact it is wholly void of air, and has been brought, by the pressure of the fluid around and upon it, into nearly the condition of the lung of the fcelus that has never breathed. But its firmness, its resistance to being torn, and its capability of being again inflated, prevent our con- founding it with hepatized lung. Sometimes its cellular texture is obliterated ; the opposite surfaces of the vesicles and smaller air-tubes adhere together; the luno- will aot admit air ; it looks like a piece of muscle, and is then said to be carni/ied. Such is the general account of the anatomical characters of pleurisy, as they are lisclosed to us by an examination of the body after death. We may now inquire what effect these changes are capable of producing on the sounds which are heard when the heahhy chest is percussed, or listened at. We shall then be the better prepared to appreciate the several symptoms, general and physical, which are known actually to occur in pleurisy. Now it is clear that when the lung is pushed away from the walls of the thorax by fluid between the pleurae, it will be compressed also ; its capacity must be reduced ; less air will be able to enter it. There will conse- quently be a proportional diminution in the intensity of the respiratory murmur , and this murmur will, moreover, be less audible in consequence of the distance, from the ear, of the structure in which it takes place. The lung is attached by its roots (so anatomists speak) to the spinal column. A moderate amount of effusion will, therefore, cause it to recede upwards and inwards ; and a certain quantity of the liquid will ascend between the lung and the ribs, compressing the spongy pulmonary tissue around the larger and more resisting bronchial tubes. We might expect, in this condition of things, that the passing breath and the voice, would be audible in those tubes, through the partially condensed lung, and through the circumfused layer of liquid: and it is so. We do hear bronchial respiration, and bronchial voice and cough ; with some modification, indeed, to be noticed presently. In this respect therefore, you will observe that pneumonia, which solidifies the spongy texture of lung around the bronchial tubes by filhng it with blood, has the same effect, so fai as acoustic principles are concerned, as pleurisy, which solidifies a portion of the lung by expressing air from it, and pours round the bronchial tubes a fluid which readily transmits sound. Hence bronchial respiration and bronchophony are not always indicative of the same condition of parts within the chest, but derive their true value and meaning from the context, if I may so say ; from the circumstances under which they occur, and with which they are associated. When the eflusion is so copious as to squeeze aU the air out of the spongy part ot the lung, to pack the organ up along the vertebral column, to distend the thorax, and to compress strongly the bronchial tubes themselves, no respiratory murmur ccri then be heard, nor any tubular breathing; for the dilated chest can neither expanJ nor collapse, and, therefore, no air can pass along even the larger air-tubes ; neithei can these compressed tubes vibrate with the patient's voice , wherelorc Lrfonchophony also ceases, or is but faintly audible. Again, if percussion be made over a portion of the chest, where there is inr.onv 584 PLEURISY pressible serous fluid beneath, in the stead of healthy and spongy luncr, a dull flal sound will be rendered. But a dull sound is rendered also when percussion is made over a solidified lung. Hence the mere dullness of the part struck does not inform us whether Ave have pneumonia or pleurisy tn deal with, or some other disease that has the effect of making the lung solid, without plugging up the larger bronchi. But an expedient presents itself, by which we may, in some cases, render this experiment of percussion conclusive. The dull sound occasioned by hepatization or other solidification of the lung occupies the same spot in every position of the patient. Not so, necessarily, the dull sound produced by the presence of liquid in the cavity of the pleura. The liquid will gravitate to the lowest part of that cavity, and will carry with it the dull sound. We place the patient, therefore, in different altitudes ; and if we find that the chest, when struck, is always resonant in the higher, and always dull in the lower portions of the thorax, whatever the posture may be, then we may be sure that the cavity of the pleura contains liquid. In such a case, when the patient sits up, the dull sound will be elicited from the lower part of the chest, on one side, from the spine round to the sternum. When he hes on his back, the anterior of the thorax sounds hollow ; the posterior dull : and when he reverses that position, and lies with his face downwards, these sounds change places also ; the hollow sound is still uppermost, in the posterior part of the cavity ; the dull sound still undermost, in its anterior portion. There are just two states which may interfere with the true interpretation of the sounds produced by percussion in the manner now described ; and these are, first, partial adhesions of the pleurae, which may confine and isolate the effused liquid, and prevent its sinking from one part of the chest to another under the influence of gravity : and, secondly, so large an amount of effusion as to fill entirely the cavity, and fix the compressed and empty lung in one position ; for it is necessary, in order to obtain the shifting sounds in different attitudes of the bod}^ that there should be light spongy lung to ascend, as well as heavier fluid to sink down, according to the posture of the patient. In this last case, that of excessive effusion, the whole surface of the affected side will yield a dull sound. It is seldom so in pneumonia; it is seldom that the entire lung on one side is so blocked up, in consequence of in- flammation, as to give rise to universal dullness on percussion. But the diagnosis of these two conditions is an important one, and apt to puzzle a student. I hope to elucidate it as we go on. We may now consider, with a better chance of understanding some of them, the s-ymploms which are generally met with in a case of pleurisy under its ordinary form and progress. The general signs, then, of that complaint are rigors, pain in the chest, dyspnoea, cough, difliculty or impossibility of assuming certain postures, and fever. Very much the same, therefore, (as Cullen truly stated) with those of pneumonia, and, it may be added, with those of pericarditis : but auscultation dif- ferentiates these diseases. The physical signs I will examine presently. The general symptoms will bear, each of them, a short comment. The pain which the patient feels — or the stitch in the side, as it is expressively called — is one of the most striking and characteristic signs of the disease. Point de cote, the French name it. It occupies a point or spot ; and patients feel as if some sharp stabbing instrumen* were driven in at that spot every time that the act of inspi- ration goes beyond a certain limit. The Latin medical writers, attending chiefly to this prominent syuiptom, call pleurisy *' morbus lateris." This pleuritic stitch is subject to considerable variety in regard to its situation, its severity, and its dura ion. Most commonly it is felt on a level with or just beneath one or other of the breasts, in the part corresponding to the lateral attachments of the diaphragm : and this, even when the inflammation which occasions it is of much greater extent. 'Why is this? What is the cause of the pain ? Wherefore should it bo restricted to one small spot, when the inflammation perhaps pervades the whole of the pleura? Pathologists have made attempts to explain these matters; but per- haps tht'ir explanations are not very much to be trusted to. They say that there is a larger degree of motion at the lower part of the thorax, of the pulmonary over the costal pleura ; and that the pain resulting from that friction, when the membranes PLEURISY. 585 are inflamed, is therefore felt where the friction is the greatest. However the pain is not always confined to that spot. It is occasionally I'elt in other places, as in the shoulder ; in the hollow of the axilla ; beneath the clavicle ; along the sternum : and sometimes it is complained of as extending over the whole of one side of the thorax. Andral states that he has observed the pain to prevail especially along the cartilao-in- ous border of the false ribs, when the inflammation has attacked that portion of the pleura which covers the upper surface of the diaphragm. He says, too, that in such cases, the pain often affects the hypochondrium, and even extends as far as the flank, so that it might be mistaken for a symptom of abdominal inflammation. This ob- servation is Avorth remembering. Sliarp pain, occupying the right hypochondrium, belongs oftener to the pleura than to the peritoneum. I have known several instances m which such pain was erroneously supposed to be a sign of hepatitis, when in truth It resulted from inflammation of the pleura. Cruveilhier observes, also, that he has known the pain afiect the loins, and simulate lumbago. Whatever may be the situation of the pleuritic pain, it is generally increased by percussion, by intercostal pressure, by lying on the aflected side, by a deep inspira- tion, by cough, and by diflerent movements of the body. In many patients the pain is exceedingly sharp, whether it be continued, or whe- ther it occur only at intervals : the more circumscribed it is, generally the more acute it is. The patients are then in a state of great anxiety: they make very short and imperfect inspirations, through fear of aggravating the pain ; they dread the least effort of coughing, or of sneezing, and suppress the desire to cough which the dis- ease may occasion. There are other patients in whom the pain is moderate, is felt only when a deep inspiration is made, and is scarcely augmented by pressure or per- cussion. And there are even some cases of pleurisy which are unattended with pain from first to last. The pain commonly exists from the very outset of the pleurisy. It is sometimes vague and fugitive at first, and becomes fixed and permanent after a day or two. In that case it may be mistaken for a simple rheumatic pain ; for pleurodyne ; or for what is thought to be merely a nervous pain. When the pain is increased by shght pressure made upon the ribs as weU as between them ; when it extends over a laree space ; Avhen it is unattended with fever ; when it is inconstant or fugitive — we may suspect that it is situated in the fibrous and muscular tissue ; but these circumstances do not afford any certainty that such is the case. In fact, I have long been of opi- nion that some at least of the cases which pass under the name of pleurodyne, are really instances of what has been called dry pleurisy. You are aware perhaps that adhesions are very constantly found to exist between the lungs and the ribs in per- sons dead of pulmonary consumption. Such persons are liable to pains in the chest, beneath the clavicles, in the axilla, between the shoulders, at the upper part of the dorsal region : in short, in those situations where the adhesions are found after death most frequently and in the greatest number. The pains indicated, it may be pre- sumed, the periods at which the shghter forms of circumscribed pleurisy, attended with no other effusion than that of coagulable lymph, took place. And it is probable that many cases of pleurodyne are really instances of the same kind of pleuritic inflammation. How often do we find, even when there are no tubercles in the luno-s, firm adhesions between the pulmonary and costal pleura3, in the bodies of persons who were never known to have had any pectoral disease ! The pain alone marks the inflammation in those cases ; adhesion presently ensues ; there is no fever per- haps, or none that attracts much notice ; the pain soon subsides, and is soon foro-otten ; but the adhesion, the consequence of inflammation, remains : and this is a morbid condition which is neither revealed to the sense of hearing, nor in any other way. J am much disposed therefore to agree with Cruveilhier in thinking that ''pleurodyne is nothing else (in many cases at least) than adhesive pleurisy.'' I need scarcely repeat the fact which has so many times before been mentioned in these lectures, viz., that the inflammation of membranous parts, and especially of serous membranes, is attended with much more pain than inflammation of paren- chymatous parts. We cannot have a better example of it than is afforded in most Cases of pneumonia. Most cases of pneumonia are accompanied in the begiiuiing 586 PLEURISY. with a stitch in the side ; some cases are not. In those cases in which the stitch happens, tiie pleura also is inflamed to a certain degree, and the pain depends upon the coexistence of the pleurisy : they are cases of pleuro-pneumonia. In pure pneumonia, on the contrary, the pleurisy being wanting, the sharp pain is wanting also. The respiration in pleuris}, at its outset especially, and while there is still pain, is considerably embarrassed ; the movements of inspiration in particular are short, hurried, and often interrupted or jerking. And this depends evidendy upon the pain, which forbids the free contraction of the muscles that dilate the thorax ; and you may often observe that the dilatation is sensibly less on the affected side than on the other. Cruveilhier indeed denies this ; or rather he states that he has never observed it: but it certainly is not an uncommon phenomenon, I have noticed it, and drawn the attention of others to it, again and again. When effusion has taken place — that, one can easily understand, will be likely to aggravate the dyspnoea; and it will aggravate it in a greater degree, or in a less, according to circumstances. Thus, if the other lung happens to be a diseased lung, then the compression of that which is on the side of the pleurisy will have a more injurious effect upon the breathing. The dyspnoea arising from the effusion and con- sequent pressure upon the lung will also be in proportion, first to the amount of the efTusion ; and, secondly, to the rapidi/y Avith which it has taken place. When the effusion has been slow — or when it has long existed, and the case has become chronic — the circulation through the lung has had time to accommodate itself to the altered condition of the parts, the disturbed equilibrium bt?tween the quantit)'- of air and the quantity of blood in the lung is restored, and the dyspncca is consequently shght. But there are very singular exceptions met with to all this. Andral states (and 1 have seen more than one instance confirmatory to his statement') that there are per- sons with pleuritic effusion enough not merel\^ to fill but to dilate that side of the chest on which it exists, (and you will observe that we cannot doubt about the pre- sence of the effusion in such a case,) who appear nevertheless to be quite free from dyspncea; and that, not while they are at rest merely, for the}'- talk, get up, walk about, even take long journeys, without their respiration becoming so short as to make them complain of it. Now this is conceivable enough in old and chronic cases ; but Andral further affirms that this absence of dyspnea is not restricted to those cases in which the collection of fluid has taken place slowly ; but sometimes happens, even in patients in whom pleurisy has Ld to abundant effiision in a few days. He gives a case of this kind, in which the patient was not prevented by an enormous pleuritic effusion from carrying on, without fatigue, in the streets of Paris, his busi- ness as a carter. I remember having a butcher in the Middlesex Hospital in ex- actly the same predicament ; and nothing could persuade him that he was otherwise than well, and fit to go out ; and out accordingly he went. Remember, therefore, that there are great varieties in this respect. In some patients the dyspnoea never ceases to be urgent from first to last ; and these are apt to prove fatal cases. In others the respiration is very much impeded at first ; then the difficulty of breathing di- minishes ; and at length it ceases long before, the fluid is reabsorbed. In others again, by some unaccountable idiosyncrasy, the respiration remains at all times very facile, both at the outset and during the progress of the disease. Cough is another of the ordinary symptoms of pleurisy. It does not occur in paroxysms. It is small, half-suppressed, ineffectual. In some few cases this symp- tom also is entirely absent, even though the inflammation is intense, and the efllusion into the pleura considerable. When cough does exist, it is dry ; or it is accompanied by the expectoration of slight catarrh. If much frothy mucus should be expectorated, the pleurisy is complicated with bronchitis: if rust-coloured sputa be brought up, it is complicated with pneumonia: and in each case other signs, proper respectively to , those iwo diseases, will be present. A good deal has been said and written respecting the position which a patient assumes who is labouring under pleurisy. The manner of the decubitus has even beeii regarded as one of the pathognomonic signs of the disease. Yet, strange to PLEURISY. 587 say, observers are much at variance with each other in respect to this so-called pathognomonic symptom. Some affirm that the patient hes on the side affected ; others that he can He only on the sound side ; others ajjain that he lies neither on the one side nor on the other; or even that he lies indifferently in any posture. But this dispute is an exact counterpart of that celebrated quarrel which took place about the colour of the chameleon: "they all are right, and all are wrong." I believe that, if you narrowly inquire into the facts, they will be found to be somewhat as follows : — In the outset of the disease, while there is yet pain, the patient cannot he on the affected side on account of the pain, which that position exasperates ; he lies therefore on the sound side, or on his back ; sometimes he is obliged to sit up. At a more advanced period of the disease, when the pain has ceased, and considerable effusion has taken place, he cannot lie on the sound side, because of dyspnoea : the dilatation of the chest on that side would be impeded by such a posture ; and what is more, the effusion, lying uppermost, would press upon the mediastinum, and so further tend to restrain the expansion of the sound lung. But he is no longer pre- vented by pain from tying on the diseased side, and consequently he does, in some instances, take that position: but more commonly still he lies in what Andral calls a diagonal posture ; i. e., the patient is not on his back, nor on his side, but between the two ; on his back, we may say, but inclining towards the affected side. Again, however the fact maybe explained, it is certain that there are some few persons who lie indifferently on the back or on either side without augmentation of the dyspnoea in any of these positions, though one side is choke-full of liquid. Now of the symptoms that we have hitherto been considering, the pain, the dyspncEa, the cough, the accommodation of position, there is not one which, taken alone, can be said to be strictly or absolutely pathognomonic; or which indicates in a positive and certain manner the existence of pleurisy, or of pleuritic efflision. Yet when all, or several of them, occur together, they afford a degree of probability on these points almost equivalent to certainty. There are yet some other, and more conclusive signs, which either in themselves, or taken in conjunction with those already mentioned, render the diagnosis of pleurisy easy and sure. These signs are furnished by the size of the thorax on the affected side ; by its form and motions ; and above all, as you will have anticipated, by percussion and auscultation. I have already stated that in some cases, that side of the chest which contains the effused fluid becomes evidently larger than the opposite side. The ribs and their cartilages present that position which they assume during a deep inspiration : the intercostal spaces are pushed outwards and brought up to the level of the ribs ; and occasionally fluctuation may be perceived in those spaces, through the muscles. When these appearances are observable, no doubt (or scarcely a doubt) can remain concerning the nature of the disease. This dilatation of the thorax on the diseased side is more common in old chronic cases than in the earlier periods of acute pleu- risy ; yet it may take place in a very short time. Andral declares that he has known it sometimes reach a great degree by the fourth or fifth day of the acute disease. You may satisfy yourselves that the side is dilated, by measuring it with a string. Carry a string round the chest, upon a level with the extremity of the xyphoid cartilage, then fold it upon itself, and you will find that the half of it will more than encompass the sound moiety of the chest, and will not reach round the disease. The diseased side may measure an inch, or an inch and a half, or even sometimes two inches, more than the other. But this measurement by a string is seldom necessary. The eye takes a very accurate estimate of the comparative volume of the two sides ; and the obliteration of the intercostal spaces can only be ascertained by seeing or feehng them. It is necessary to remember that, in most persons, the right side is naturally somewhat the larger of the two. I say when this dilatation is noticed, scarcehj a doubt can exist of the true nature of the case. Some time ago I should have said no doubt : but having myself mis- taken such a case, and seen others mistake it, I introduce this slight qualification, although it is a thousand to one against another such instance occurring to puzzle or mislead the observer. My colleague Dr. Hawkins had a patient in the hospital, in whom this dilatation of one side of the chest was exceedingly well marked. It was 588 PLEURISY the left side that was enlarged ; the heart was evidently pushed over to the right of the sternum. This is another circumstance strongly corroborating our conclusion in such cases. The intercostal spaces were effaced, and the whole of that side was perfi ctly dull on percussion. The poor fellow had a very unhealthy aspect ; — and he had, some time before, suffered ampatation of a leg, for what was understood to have been scrofulous disease of the knee-joint. It was not unnatural, therefore, that every one who saw him should have come to the conclusion that this was a case of empyema ; of fluid, and most likely of pus, collected in the pleura, and very proba- bly the result of the extension of scrofulous disease from the lungs. Under these circumstances, and inasmuch as his dyspnoea was not urgent, it was not thought right to take any steps for evacuating the presumed fluid. The case was pointed, out to ihe pupils as a capital example of empyema. At length the patient died ; and when his body was examined we discovered — what think you ? not pus, nor serum, but a larire red solid mass, in the centre of which, when it was divided, was still a red, but softer, pultaceous, half-fluid substance. At first it was thought to be can- cerous degeneration of the lung; but it was soon noticed that the solider part was arranged in concentric layers, like those which are often seen in aneurismal tumours ; and further research showed that the effusion had indeed once been liquid, for it consisted entirely of blood, which had coagulated in the manner I have just described. And the source of the blood was detected. A portion of two of the ribs had been destroyed by ulceration, and one of the intercostal arteries had thus been laid open. The lung was found uninjured, but totally empty of air, and pressed flat up against the mediastinum. No precaution could guard against such a source of fallacy ; and you are not likely ever to meet with just such another case: yet I have thought it sufficiently interesting to relate, in illustration of the subject immediately before us. It is unfortunate, as far as the diagnosis is concerned (but not in any other sense), that dilatation of the thorax is far from being a constant symptom, even in cases in ■which the effusion is verj^ considerable. There is still a condition of the thorax to be described, which is the very opposite to this. When the effused fluid begins to be reabsorbed — and when some cause or other, generally the formation of adventitious membranes, prevents the lung from re-expanding, and approaching the ribs in proportion as the fluid is removed — then of course the ribs jjiust sink in, and approach the lung, to prevent that void which would otherwise exist between the ribs and the lung. Consequently that side of the chest on which the fluid has existed becomes narrower than the sound side. And the actual diflerence between the two will be augmented by the circumstance that, in such cases, an amphfication of the sound lung, and of the cavity in which it is lodged, a true compensatory hypertrophj', commonly takes place. This partial or general retraction of one side of the chest is not so much a sign of disease actually in progress, as of disease gone by ; and it may exist without evident disturbance of the health of any kind. Persons who are thus affected have the appearance of being inclined towards the diseased side, even when they endeavour to hold themselves upright: and the de- formity, for such it is, becomes manifest to the eye when the chest is uncovered. You see that the side is narrowed and shrunken. All its dimensions are contracted. It measures less, in circumference, by an inch or more, than the other side. The shoulder is depressed ; the hypochondrium is tucked up ; and the libs are drawn close together. A patient of mine, whose chest had been punctured (a remedial procedure to be spoken of presently), and who drew off daily, with a syphon, pus which did not otherwise find vent, had such difficulty at last in introducing the tube between his ribs, that excision of a piece of the bone was contemplated by the emi- nent surgeon who had performed the operation. The effect of the atmospheric pressure is sometimes so great as to crook the vertebral column, and produce lateral curvature of the spine. This I have myself witnessed. And as one of the unseen walls of the cavity, viz., a part of the diaphragm, is carried permanently up under tne ribs, so another of the unseen walls, the mediastinum, is liable to be influenced by the tendency to contraction. The heart w4iich, when the left pleura is distended, PLEURISY. 589 IS apt to be thrust over, beyond the sternum on the right, may thus, when the nght pleura is contracted, be dragged into the same position. In the former case, the dull sound given out by the diseased side when struck, will transgress the mesial line, and encroach a hltle upon the healthy side : in the latter, the resonance yielded by the healthy will transgress the mesial line, and encroach a little upon the diseased side. The difference of the two sides is so striking, that, at first sight, an observer sup- poses it to be even greater than it is actually found to be by admeasurement. Yet Laennec tells us that he had met with this deformity in persons who were not them- selves aware of its existence. But all such persons had suffered some long disease, which appeared to be shuated chiefly in the thorax. The conditions I have just been describing are physical conditions ; and the signs they furnish are physical signs. I have still to speak of the remaining physical signs, which are also auscultatory signs. What I have already said upon this sub- ject in the present lecture will, I trust, enable you almost to foresee the kind of information which these signs afford in actual practice. As soon as even a slight amount of effusion commences in the pleura, it is an- nounced by a diminution of the hollow sound which percussion elicits in the healthy state. In proportion as the effusion becomes more considerable, the chest, when struck, gives a sound more and more dull. At first, this flat sound is rendered oppo- site the lowermost, depending part only of the cavity ; and this, as I showed you before, forms one ground of distinction between the dullness on percussion in pleu- risy, and in pneumonia. However, at length, the effusion augmenting, the dead flat sound may proceed from the whole of the affected side ; and this forms another ground of distinction ; for it is very seldom that the whole lung becomes so solid in pneumonia as to yield a uniform dead sound over the whole of one side of the chest. Either the dull sound is universal on one side, or it is not. If universal, it is not likely to be the result of solidification by pneumonia; or, I may add, by tubercles : if not universal, the dull sound will (except in some rare cases), shift its place as the patient alters his posture. I may mention another ground of diagnosis, which may be of great assistance when the case is seen from the beginning. The dullness comes on much more quickly in pleurisy than in pneumonia. It has been noticed within twelve hours from the invasion of the disease. In living animals, a considerable quantity of serous effusion has often been very rapidly produced by injecting some slightly irritant matter into the cavity of the pleura. In pneumonia, the dullness is commonly later in its appearance. The induration of the lung is gradual; and so is the pneumonic dullness on percussion : the effusion of serous fluid is early and rapid ; and so also is the coming on of the pleuritic dullness. Moreover, as I have just shown you, pleurisy may displace the mediastinum, and cause the whole sternum to give a dull sound. A hepatized lung will render one-half on]y of it dull. The intensity, or completeness too of the dull sound is generally greater in pleurisy than in pneumonia. In two days, or even in twenty-four hours the whole cavity of the pleura on one side may be filled quite full ; and the whole of the corresponding surface of the chest, from its base to its summit, will yield a sound (to use one of Avenbrugger's strong expressions) tanquam percussi femoris. It is very uncommon for such total and universal matite, as the French call it, to result from inflammation of the lung. Again, in the outset of the disease, while there is yet little or no effusion, but when the pain is acute, the vesicular breathing is heard more faintly and feebly on the painful side than on the other. On that side also the walls of the chest are less forcibly expanded. But percussion, when the pain will permit of its being practised, gives the same sound on each side. It is clear that the sharpness of the pain causes the patient instinctively to expand the chest on that side as little as possible, and consequently the quantity of air that penetrates the lung in a given time is diminished, and the respiratory murmur is feeble. As soon as efliision commences, the vesicular rustle is heard still less plainly on the affected side ; and in proportion as the fluid increases, that rustle or murmur be- 2z 590 PLEURISY. comes more faint ; and at the same time it becomes more distinct and noisy than natural — puerile, in fact — on the sound side. And while the respiratory murmur is disappearing on the diseased side, and the spongy lung is becoming empty of air from the pressure of the augmenting fluid, and the larger bronchi are surrounded by con)pressed lung and by incompressible liquid, the bronchial sounds begin to be heard, which I formerly described — the bronchial voice, the bronchial respiration. But the sounds are not exactly the same as those which are heard in pneumonia. They are modified by the nature of the substances through which they pass. The voice, for example, is still bronchial, still the voice of a person talking into a tube : but it has a superadded character ; it is trembling, quivering, thrilling, cracked, dis- cordant. I strive in vain to convey to you by these epithets a notion of this remark- able modification of the voice. Laennec's happy similitudes may enable you to form a more exact conception of it. It is hke (he says) the bleating of a goat; or, happier still, it resembles the voice of Punch. But when once you have heard the sound, you will never forget it again. I presume that this modification of broncho- phony (for such it is, and such I would have you consider it), is caused by the rapid undulations communicated to the effused liquid by the vibrations of the bronchi and condensed pulmonary tissue. This sound is usually most distinctly heard near the inferior angle of the scapula, the patient being in a sitting position. It disappeai-s, or merges into pure and distant bronchophony, when the liquid exceeds a certain amount, so as to compress the bronchial tubes themselves, and to dcimji their vibration. I would have you recollect, therefore, that jegophony, which is the technical ap- pellation of the sound I have just been describing (goat-voice), — aegophony is nothing more than a species or variety of bronchophony; and the two run each into the other by such fine gradations, that it is sometimes difficult to say which it is we are listen ing to. When the quivering is strongly marked, we may be certain that it denotes effusion into the pleura ; when bronchophony only is heard, we cannot be sure, froir that sound alone, whether there be indurated lung between the ear and the bronchi or a liquid, and a portion of compressed and condensed lung: but other phenomena complete the diagnosis. Do not forget that when any modification of the voice is heard, or thought to be heard, on the suspected side, the sound of the voice in the corresponding part of the other side of the chest must be ascertained also. It is only by a comparison of the two sides that we can come to any safe conclusion ; and that comparison becomes often a striking and most instructive contrast. LECTURE LIIl. Pleurisy continued. Recapitulation of Symptoms ; of Diagnostic Signs. Causes of Pleurisy. Pneumothorax; its Conditions and Signs. Treatment of Pleu- risy. JSmpyema. Paracentesis Thoracis. In the last lecture I enumerated the symptoms, general and physical, which are met with, more of them or fewer, in cases of acute pleurisy. I then considered them singly : it may be well to take a rapid recapitulatory view of them as they exist together or in succession, and compose the actual disease. The outset, then, of pleurisy is marked by sharp stabbing pain, most commonly situated beneath one of the breasts, and preceded or accompanied by rigors. These two signs, the stitch and the shivering, are sufficient of themselves to awaken a strong suspicion that pleuritis has set in. At the same time there are usually a dry cough; a dread of breathing; a check or catch in the inspiration, which is curbed, so to speak, by the pain ; fever ; often a comparatively feeble respiratory murmur on that side on which the pain is felt ; and the patient cannot lie on that side. If no PLEURISY. 591 liquid effusion takes place, these symptoms ordinarily disappear at the end of a few days, and the patient recovers. The case has been a case of dry pleurisy ; and the chances are much in favour of the lung having become permanently adherent to the ribs. I should have said, with respect to the fever, that at the outset of the pleurisy it is often high. And it was matter of observation long before the method of ausculta- tion was thought of, as well as since, that in the acute period of the disease the pulse is remarkable for its hardness, and forms a contrast with the soft pulse of pneumonia, and with the small and contracted pulse of inflammation of the serous membranes of the abdomen. Indeed, the older physicians laid great stress upon the quality of the pulse, in their endeavours to distinguish pleurisy from pneumonia. But to resume the description of the symptoms of pleuritis. Where effusion takes place (and it does so very early, so as to form a part of the complaint, just in the same sense in which expectoration forms a part of catarrh), the sound elicited by percussion becomes dull on the side on which the effusion exists. While the effu- sion is moderate, the dullness shifts its place according to the posture of the patient, and is heaid only when the lowermost part of the chest is struck. But the fluid may soon increase so much as completely to fill the pleura ; and then the whole of that side is dull. Meanwhile the murmur of respiration becomes feeble and faint, and at length, as the effusion augments, ceases altogether; while on the sound side it grows noisy and puerile. Tubular breathing, and that modification of the bron- chial voice which medical men have agreed to call aegophony, become audible during the early periods of the effusion, ^gophony is heard, however, only so long as the quantity of liquid poured out observes a specific limit. There must be a certain amount of effusion — and there must not be more than a certain amount. I have sometimes thought that the peculiar sound depended on the undulations produced in the surface of the liquid by the bronchial vibrations. It certainly is somehow con- nected with the presence of a stratum of liquid between the lung and the ear. When the lung is strongly compressed, and especially when the cavity is stretched and dis- tended by the enclosed fluid, the side is necessarily motionless ; no tubular or other breathing can any longer be heard, or even occur : nor is the voice conducted, except perhaps very faintly, to the listening ear of the physician. When the effiasion is great, that side of the thorax on which it has taken place becomes, often, more or less dilated ; and I should add, that the integuments on the same side are frequently cedematous. The patient now cannot lie on the sound side ; and the most common posture is that which is intermediate between the supine position and the lateral ; he lies towards, but not, in general, on, the affected side. I observed, in the last lecture, that this inabihty, after the effusion has reached a certain point, to lie on the sound side, might be accounted for in two ways. Partly it rnay be owing to the impediment which lying on the sound side offers to that side's expansion. The muscles which dilate the healthy side have then to lift, as it were, the weight of the body, and are, some of them, pressed upon and encumbered in their action by that posture. But the inability in question is chiefly attributable to another circumstance, viz., the pressure exercised by the efftised fluid downwards, through the mediastinum, upon the only lung that is left to perform the function of breathing. Now, disputes or differences of opinion have arisen as to which of these two circumstances is the most efficient cause in this matter ; and therefore it may not be amiss to provide you with the facts which prove that the last-mentioned cause is, in reality, the most operative — I mean the weight of the superincumbent liquid, in the supposed position, upon the mediastinum and upon the healthy lung below it. This is shown by the fact that patients, to whom the decubitus on the sound side had previously been impossible, on account of dyspncea, have been able to rest in that position hnmediutdy cfler the artificial evacuation of the fluid. Now, in such a case, the obstruction to the dilatation of the heahhy side, produced by placing it under the weight of the body, would remain the same as before, or nearly so. A hospital patient of mine, named Coggs, could not breathe if he attempted to lie on hi" right side. His left pleura was distended by liquid effusion. I thought fit to / 592 PLEURISY. have paracentesis performed ; and the poor man was greatly delighted to find him self at once enabled by it to assume the posture which his weariness had long made him wish for, but which he had not been capable of enduring. We found by per- cussion that the diseased side was now filled with air ; the compressed lung had not risen at all; so that the necessity for the free expansion of the sound side was just as great as before the operation. You may find a precisely similar consequence of the same operation related in the fifth volume of the Dublin Transactions. The cede ma that is sometimes observed on the diseased side is more or less con- nected, probably, with the habitual position of the patient. There is yet another sign of pleuritic effusion, M-hich, as it is very simple, and readily perceived by even the least instructed observer, is too valuable to be neglect- ed. In most persons, one's open hand, laid flat upon the surface of the chest, feels the vibration or thrill which the voice occasions when the person speaks. Now, in a case of pleurisy with effusion, you will generally find a remarkable contrast be- tween the two sides in this respect ; {. e., the thrill is strong and evident on the sound side, and not perceptible at all on the other. Whereas, when the whole side is dull in consequence of solidity of the lung, the thrill is much augmented on that side. But this thrill is not always present in the healthy state, and then we can infer nothing from its absence on the diseased side. After a while, when the fever has ceased, the liquid begins to be reabsorbed : but as, in many cases, the lung is more or less bound down by adhesions, or overlaid by a membranous stratum of lymph, it cannot expand in proportion as the liquid is re moved : and the necessary consequence is, that shrinking of the affected side in all its dimensions, which I fully described yesterday. Let me now briefly re-state the points of distinction between pleuritic effusion and pneumonic consolidation, when the one or the other of these two morbid conditions is proved to exist by dullness on percussion, extending over the whole of one side of the chest. The question is one which frequently arises ; and it is one of much interest and importance. First, then, we distinguish these different conditions, having some physical signs in common, by their history. In pleurisy, sharp pain, and a dry cough, or perhaps no cough, precede the dullness : and we have not the crepitation, nor the rust- coloured sputa, which are antecedent to the dullness of pneumonia. We cannot, however, always learn the previous history of a given case. Secondly, a lung rendered solid by inflammation does not distend the cavity. Copious pleuritic effusion most frequently does. In the first case, therefore, we have not that separation of the ribs, that obliteration of the intercostal depressions, that protrusion of the corresponding hypochondrium, that mensurable enlargement of the side, that extension of the dull sound beyond the middle of the sternum, or that displacement of the heart, which are, some or all of them, apt to result from a collection of liquid in the pleura. Thirdly, the solid lung transmits the voice from the pervious bronchi to the sur- face of the thorax ; and if any motion of the affected side remains, it transmits also the sound made by the passage of the air through them. These phenomena are wanting when the pleura is so stretched by its hquid contents as to make the side everywhere dull to percussion. Fourthly, the vibration of the thoracic parietes, caused by the patient's voice, is augmented by consolidation of the lung ; prevented when it is strongly compressed by imprisoned liquid. The increase of this thrill can be felt therefore in the one case ; its diminution in the other. The simple test fails to be applicable when, from the feebleness, or the high pitch, of the person's voice, no thrill is perceptible on either side in the healthy state. Fifthly, a patient having one lung solid, is generally indifferent as to posture. A patient having one pleura quite full of liquid, lies (usually) on or towards that side ; and is distressed and suffers dyspnoea if he attempts to lie on the other. It 's of more importance that we should inquire into the exciting causes of pleu risy than ii.to those which give rise to pneumonia. They are more numerous and PLEURISY. 593 complicated, and have a more direct bearing upon the prognosis and treatment in the one case than in the other. I do not desire to refine too much ; and therefore I shall restrict myself to those causes which are obvious, and which you are likely to meet with in practice. 1 merely say of exposure to cold, as an exciting cause of pleurisy, that it is a very common — the most common — cause. You know already all that I can tell you of the circumstances that are likely to render that cause effectual in producing internal inflammations, and, among the rest, pleuritic inflammation. But pleurisy is often occasioned by mechanical violence; or by the accidental extension of disease from other parts ; and the course, and the event of the disease, are liable to be considerably modified by the nature of its cause in such cases. Pleurisy may be excited by the splintered ends of a broken rib ; and if the pul- monary pleura be wounded in that manner, air may get into the pleural cavity, as well as into the areolar tissue beneath the skin ; constituting the true and genuine emphysema of our forefathers. Pleurisy may be determined also by a penetrating wound of the thorax ; or by a perforating ulcer of the pulmonary pleura, the exten- sion of a tubercular excavation. In the one case air vi^ill enter from without, if the aperture be sufficiently large ; in the other, air will pass from the lung into the cavity of the pleura. In all of these cases of air finding its way into this serous sac while in a state of inflammation, the event of that inflammation is much more likely to be the effusion of pi(S, than w'hen no communication exists between the inflamed mem- brane and the atmosphe-re. This I have mentioned, and offered some explanation of, before. But another very curious consequence results from the admission of the air, and its coexistence with puriform or other liquids in the sac of the pleura. New auscultatory signs arise, very easily appreciated, very instructive, and therefore very necessary for you to be acquainted with. You must know that when the pleura contains air alone, the patient is said to have pneumothorax ; and when (what is infinitely more common) the air is there in company with liquid, he is said to have pneumothorax with effusion. This is the name given to that condition of the chest by Laennec ; and it serves its purpose sufficiently well. I shall take leave to employ the simple term pneumothorax, in speaking of either condition ; whether there be liquid also in the pleural cavity or not. Pneumothorax, then, often proceeds from one or other of those causes of pleu- risy just mentioned. It is sometimes produced by the operation of paracentesis tho- racis ; by the opening made into the thorax by the trocar of the surgeon, in order to let out its fluid contents; in plain English, by tapping the chest. The modifications of sound that resuh are particularly curious. Of course the air occupies the higher portion of the cavity and the liquid the lower, in whatever position the patient may be placed. And this being the case, percussion will give a remarkably hollow sound when made upon the uppermost part, and a totally dull and flat sound when made upon the lowermost part: and the change from the hollow to the dull sound will often take place quite abruptly, so that you may trace out the exact level at which the surface of the effused liquid stands. And if you reverse the posture of the patient, the resonant and the dull sounds will interchange their respective places : the uppermost part always yielding the clear, and the undermost the flat sound. This is just what you would expect. The result of the experiment is the same whether you make it upon the human thorax, or upon a beer-barrel. The resonant part, you are to observe, will'be much more resonant than it would be in health — more resonant (you have always the other lung to test it by) than the corresponding portion of the opposite side of the chest — tympanitic, drum-like : for the air is not involved in spongy lung, but contained in a free space ; and the sound is not damped, as in a heahhy chest it is damped somewhat, by the presence of the lung. More- over no respiratory murmur can be heard where this tympanitic resonance occurs: nor can any thrill be felt. Now I say all this is no more than you must have fore- seen. But the sounds detected in this new condition of things by the ear applied to the chest, as the patient breathes, or speaks, or coughs, you would not, I think, have anticipated. You hear then a sound which I must endeavour to descrbe in words, but which you will scarcely form a right conception of till you have heard it. and 38 2z2 594 PLEURISY. then all further verbal description will be needless. I can describe it by simihtudes only. The patient's breathing is like the noise produced by blowing obliquely into an empty flask ; and so the French have given the sound the somewhat magnificent title of '• amphoric resonance." I have heard, fifty times over, exactly the sound in question when I have been out shooting in a rough day, and the wind has blown sidewa3's into the gun-barrel. It is a ringing metallic sound. When this is present during the breathing, the voice also has, even more strongly in general, this metallic character ; and so has the cough ; and each of them is apt to be succeeded by a tinkling echo. The voice and cough resemble those of a person who speaks or coughs into a deep well : or with his head bent over an empty copper boiler. The same ringing quality is often heard when one speaks in a large vaulted room ; or beneath the arch of a stone bridge. You may perhaps now have some idea of what these metallic sounds are. They are very singular : and they are perfectly decisive (as far as my experience has gone) of the presence of air in a considerable cavity, within the thorax ; which cavity mostly contains liquid also : and of the presence of air and liquid in the cavity of the pleura in particular. I do not know that the liquid is essential : I do not believe it is ; but commonly there is some liquid, and a good deal of air. Almost always too — but that is not indispensable — the cavity communicates with the external air, either through the walls of the chest, or through the bronchi. Neither is it necessary that the cavity should be in the pleura, for it may be in the lung: and when we come to speak of phthisis I shall point out the circumstances which will enable you to determine whether the sounds proceed from a tubercular cavity, or from the sac of the pleura. What you will please to remem- ber is, that in actual practice, in ninety-nine cases out of a hundred, these sounds will be found to denote the presence of both air and liquid in the cavity of the pleura ; and the probable existence of some passage of communication between that cavity and the external air: in a single w'ord, they will reveal the existence of pneumo- thorax. The voice reverberates in the little cavern just as it does in a large empty room with a stone roof; and this is the best explanation I can give you of the phe- Tiomenon. Sometimes, as you are listening, especially if the patient has recently changed his posture, you will hear a sound just like that occasioned by dropping a p n's head into a glass vase, or into a metal basin; and to this sound the name of metallic tirihling has been given. It really often closely resembles the distant tinkling of a sheep-bell. This is supposed to result from the dropping of the liquid from the upper part of the cavity ; or sometimes from the bursting of a bubble on the surface of the liquid during respiration. You may succeed now and then in hearing a species of the same metallic tinkling by applying the stethoscope over the stomach, when percussion has already taught j-ou that it is distended with gas, and by getting the patient to swallow some drink in successive teaspoonfuls. Another auscultatory sound, arising out of the same condition, viz., the presence of both air and liquid in the cavity of the pleura, and known even as early as the time of Hippocrates, is rendered audible by siiccussion of the patient's body. You lay your ear upon his side, and get him to give his body a sudden jerk or jog ; or you get some one else to take him by the shoulders and shake him ; and you hear the liquid splashing within : just as you hear it when you shake a cask that is neither full nor empty of water. This is an unequivocal indication of pneumo- thorax; and demonstrates beyond a doubt that there are both air and liquid in the pleural sac ; for no sound would arise if there was liquid only. A moderate quan- tity of liquid will make a greater squash than a large quantity. Unequivocal I say it is, because one coulJ scarcely be misled by the splashing which may sometimes arise from wind and water mingling in the stomach. I wish that a patient, who was under my observation for some months last year in the Middlesex Hospital, and could produce this splashing noise at will, were there now; for he was not a little proud of his fatal gift, and I should have brought him down here to-day, and given you an opportunity of hearing this sound for yourselves, worth a dozen descriptions of it. It is surprising how long this state of things within the thorax may last, without Any great declension of the patient's general heahh and strength, even when the PLEURISY. 595 disease is (as it mostly is) incurable. Two men, patients of mine, both of whom had well-marked pneumothorax in connection with tubercular phthisis, remained in the hospital for several months ; till, in fact, I could conscientiously keep them there no longer : and each of them went away in very tolerable plight. 1 was unable to trace them afterwards, for they returned to their homes, the one in Ireland, and the other in the north of Scotland. You see, then, that the conditions of pleurisy, and the symptoms of those condi- tions, ma)' be modified by its causes. All those causes that imply the introduction of air into the cavity of the pleura, imply also a more serious state of disease than results from most other causes. The perforation of the pleura, by the extension oi a vomica, I have mentioned as one of those causes. But tubercles in the lungs are frequently, very frequently, the cause of pleurisy, when no such perforation has taken place. A tuhercle, or a group of tubercles, approaches the surface of the lung, but does not break through. Generally the pleurisy so produced is slight and partial, and ends in the formation of adhesions : it is dry pleurisy. And this very common occurrence of adhesions between the costal and pulmonary pleurae, in the course of tubercular disease of the luugs, is, in truth, one reason why perforation of the pleura, and pneumothorax from that cause, is comparatively so rare. The part where the perforation is hkely to take place has generally, though not always, been secured and clouted, as it were, by previous adhesion. So that even here we find that inflammation has a conservative tendency, and helps to postpone the fatal ending of the specific disease. Pleurisy may terminate in resolution and complete recovery; or in adhesion, which is its next best termination, and which obtains for the patient, at the expense of some trifling embarrassment of his breathing, complete security for the future against the dangers of pleuritic efTusion. Again, acute pleurisy may end in chronic disease of the pleural cavity: i. e., in a shrinking inwards of the walls of the chest, attended with total uselessness, or a very imperfect and limited use, of the corres- ponding lung. Lastly, pleurisy may terminate in death. It may cause efTusion so copious, that the patient will die of actual suffocation, unless the fluid be removed by art. On the other hand, he may die worn out and exhausted by the disease, espe- cially if it be attended with suppuration. In that case he will suffer hectic fever, and all its wasting and mournful accompaniments; and death ultimately by asthenia. It is seldom that simple idiopathic pleurisy proves fatal. As the matter from a tubercular cavity may break in tipon the pleural sac, and lead to the admission of air, and the establishment of pneumothorax ; so the puriform fluid which has resulted from inflammation of the pleura, and was for some time imprisoned in its sac, may also break out, and the result will still be the admission of air, and pneumothorax. This is not a very frequent result of pleurisy, however. When it occurs, an abscess forms externally, generally in front of the chest ; and either the abscess bursts, or it is opened by the surgeon, and then it is found to com- municate with the cavity of the pleura. Sometimes air is eflused into the sac of the pleura, in consequence of the rupture of dilated air-cells on the surface of the lung: sometimes gas is generated there from the decomposition of effused liquids ; and in such cases the gas has a strong odour, like that of sulphuretted hydrogen : sometimes, again, gas appears to be secreted from the membrane itself. All these events are, however, uticommon. When air, from whatever source, is shut up in the cavity of the pleura, and goes on accumu- lating there, it will compress the lung, just as certainly and efTeciually as if there were a liquid extravasated. And such compression, if suddenly brought about, may cause speedy death by apnoea : and this is more apt to occur from a puncture of ihe pulmonary pleura by the extremity of a fractured rib, than from any other cause. As to the treatment of pleurisy, you will have anticipated that in the outset of the disease we must have recourse to the lancet. I have stated, more than once, that blood-letting tells more, and is better borne, in inflammation of serous membranes, than in any other case. If you see the patient while the stitch in the side, and the restrained and cautious respiration are present, you will bleed him, in the upright 596 PLEURISY. posture, from a large orifice, until the pain is relieved, and he can draw a full breath again with ease and satisfaction ; or until he is about to faint. And if the pain and catch in the breathing should return, and the pulse continue firm and hard, you will bleed again in the same way ; or cover the painful side with leeches ; or abstract blood by the cupping-glass and scarificator. It is best to bleed fearlessly at first ; and in proportion as you do so, the chance will be diminished of a repetition of the blood-letting being needed. The blood, in pleuritis, is always deeply buffed and cupped. Tartar emetic, which is so useful when the mucous membrane of the air-passages is inflamed, is not adapted to inflammation of the pleura. On the other hand, mer- cury, from its well-known power to check the effusion of coagulable lymph, is espe- cially indicated. Of course it is to be given with a view to its specific effect on the system ; i. e., in equal doses, repeated at frequent and equal intervals, and guarded by a small quantity of opium. And in very severe cases, or when the internal^ employment of mercury is in any way contra-indicated, recourse must be had to inunction of the linimentum hydrargyri, or of the strong mercurial ointment. By the early and vigorous adoption of these measures, the inflammation may generally be subdued in no long time. If, though the fever diminish, there still be pain in any part of the chest, leeches may be again applied, or the part may be covered with a blister. I do not think a blister does any good, — on the contrary, it is likely, by the additional irritation it causes, to do harm — while the inflammation is yet recent and active. But though pain may have ceased, and no fever remains, and the patient is not conscious of much dyspnoea, there may be, and there often will be evidence, not to be mistaken, of effusion into the cavity of the pleura. Dullness, I mean, on percus- sion, bronchial respiration, segophony ; and the object of our treatment is now to get rid of the fluid. We seek to do so by keeping the patient on low diet. The more (says Broussais, with some quaintness), the more the patient eats, the sooner he will die. We pursue the same object by keeping his gums tender with mercury ; by applying blisters one after another to the affected side ; and by purgatives, and diuretics. By keeping the vessels empty we facilitate as much as in us lies, the absorption of the liquid contents of the pleura. A very good form of diuretic for this state of matters is a combination of squills, digitalis, and mercury. Half a grain of digitalis, one grain of squills, and three or five grains of blue pill, repeated and continued according to the state of the mouth. Under this kind of treatment the effused fluid will often be completely removed ; and the chest restored to its former state. I last week dismissed a lad from the hospital in whom all this was accomplished. But in other cases, though the fever and the inflammation are at an end, and ab- sorption of the liquid takes place, the parts within the thorax do 7iot revert to their original condition. This we know by that shrinking of its dimensions on the side affected, which was described in the last lecture. This shrinking and narrowing arc the necessary consequence of the absorption of the liquid, unless the compressed luno- dilates a^ain in proportion as the fluid is taken up. In most cases of this kind the lung cannot rise ; being bound down by thick and firm false membranes : and then the deformity is irremediable, and lasts for life. If the lung is completely emptied of air, and enveloped by strong bands of lymph, so that it is permanently unable to admit air again — in that case, as the bony framework of the thorax can yield to a certain extent only, there will always remain, I presume, some liquid in the pleural cavity. If, again, the lung recovers a part of its lost volume, and nieets the contracting parietes of the chest, adhesion may take place : and the cavity of the pleura be obhterated by thick layers of false membrane. And other changes t.re apt to arise in the lymph which is adherent to the pleura in these cases of imperfect repair. Sometimes tubercles form in it. Sometimes ossific matter is deposited, I show you a fine specimen of this kind of ossification of the pleura. There is yet another supposable case : the investing adventitious membrane may be thin and weak, and yielding; and though the lung may not expand to its full dimensions at Srst it may gradually force its way against the binding power of the coagulable PLEURISY. 597 lymph, and then the external configuration of the chest may be restored, and the symmetry between the two sides return. That this sometimes takes place I cannot doubt: but I have only once met with a case in which the dwindling- of the side was entirely recovered from. In May, 1834, I was asked to see a child four )'ears old, who had had cough, and had wasted to mere skin and bone, after scarlet fever. I found the whole of the right side of the chest perfectly dull on percussion, and no respiration could be heard on that side. He was taken by his parents into the country, and I did not see him again for some weeks. He then had ceased to cough, and, in a great measure, had regained his strength ; but he presented, on the side which had been dull, the most marked and complete example I ever saw of the sinking in of the ribs, flattening and contraction of the chest, and depression of the shoulder, which denote bygone pleurisy and diminished size of the lung. About a year from the occurrence of the original disease his father brought him to my house, that I might see the change which had again taken place. The boy was plump and rosy, and in perfect health ; the right side of the chest was as full and round as the other ; the symmetry of the two sides was completely restored ; the breathing natural and perfect ; and the sound on percussion hollow. His father, to whom the former shrunk state of the side had been pointed out, told me that he had watched, with deep interest, the process of recovery, and that it had been very gradual. Whether after once having sunk in, the ribs ever quite return to their natural position in the adult subject, I do not know. I have never seen that happen. There are yet other cases in which the effusion continues and increases, and the side, instead of shrinking, enlarges ; the functions of the lung on that side are en- tirely abolished ; nay, the use of the remaining lung is greatly interfered with, by the pushing over of the mediastinum ; and the patient is in imminent danger of suffocation. In such cases, whether the effusion has taken place rapidly or slowly — whether the disease has been acute or chronic pleurisy — we must reheve the op- pressed lung by letting the fluid out — by tapping the thorax ; and the sooner that is done, when such a state of things exists, the belter. The operation is not difficult, nor formidable ; but a mistafte in the diagnosis may be very formidable. I have heard of two instances, one in Scotland, and one in this town, in which the operation of paracentesis thoracis was determined on, to relieve the oppression caused by empyema : but the opening was made on the wrong side ; and the patient in three minutes was, in each case, a corpse. There was effusion, which had already put a stop to the play of one lung ; and upon air being admitted to the surface of the other, it collapsed also, ond immediate suffocation took place. I do not mention these mishaps to deter you irom performing the operation. They both took place some years ago. Such a mistake would be unpardonable now. But I mention them to show the necessity of our being sure of our ground before we proceed to open the thorax of a living person. A surgeon told me very recently that with the sanction, and at the suggestion, of a physician, who understands aus- cultation exceedingly well I believe, he passed a trocar into the chest of a patient ; but no fluid followed, to the no small mortification of the physician. This proved to be a case of malignant disease of the lung; and fluid was let out afterwards by puncturing the thorax in another place, and much relief afforded ; although of course the disease proved ultimately fatal. The surgeon informed me that he had suspected the true nature of the case, from observing a livid protrusion in front ; which was in fact, the specific disease making its way through. You will take care, then, to survey the chest narrowly before you plunge a trocar into it. If you see by your eye, and ascertain by measurement, that one side is larger than the other ; if the intercostal depressions be effaced on that side ; if the whole surface affords a dull sound when percussed ; if the side does not move at ali. or scarcely moves during respiration ; if no vibration can be felt on that side when the patient speaks ; if no breathing can be heard in the corresponding lung ; if tht heart be found beating in an unnatural place, down towards the left hypochondriuni, or in the other direction on the right of the sternum ; and if, at the same time, the other side of the chest moves freely, sounds resonantly, communicates a thrill to the 598 PLEURISY. hand while the patient converses, and is full of puerile respiration ; then you may be sure that the larrrer side is distended with fluid. But it does not follow that you should, therefore, open that side. The propriety of doing so will depend upon circumstances. In my judgment, that operation ought never to be performed unless the hfe of the patient is, or seems to be, in jeopardy, from the continued presence of the liquid within the thorax. Now, life is plainly in jeopardy when the vital functions of the lungs, or of the heart, are greatly hindered ; when symptoms present themselves of approaching death by apnoea, or by syncope. If we discover no cause for those symptoms, except the increasing pressure of liquid pent up in the pleura, we are warranted in ascribing them to such pressure, and bound to act upon that persuasion. When- ever, with the physical signs of abundant effusion, we have great labour and dis- tress of breathing; an anxious and livid aspect; a tendency to delirium — or extreme faintness, and a vanishing pulse — there is no time to be lost : it is our duty to pro- pose and to urge the mechanical removal of the pressure, which must else be fatal. Again, when the patient, without suffering much dyspncea while he lies quiet, is yet evidently losing ground from day to day, and early death by asthenia appears to be inevitable, without the operation ; and when all other means for getting rid of the imprisoned liquid have failed ; and when no other condition of disease, or of advanced age, exists to account for the progressive sinking ; then also, in my opinion, the patient should not be denied the chance which the operation may afford. Thirdly, whenever (no matter how we ascertain the fact) the effused liquid con- sists of jms, it should be let out. In either of these three predicaments, and in no other, should we be justified (as I think) in making an opening into the living thorax. But I wish to be understood as giving you simply the impression which my own experience has made upon my own mind. I know that some practitioners recom- mend the early employment of the trocar ; while (they say) the false membranes, which are apt to prevent the compressed lung from expanding again, are yet tender and unorganized. But surely we should risk much, and gain nothing, by admitting air into the pleura while the inflammation is still in progress. Most cases of mere pleurisy with effusion do well. The mortality from uncomplicated pleurisy is ex- ceedingly small. It would, I fear, be vastly augmented if every patient having mani- fest effusion were to be tapped. The danger of the operation is this ; — that it may, and probably will, induce suppuration, or cause the elfused liquid to become putrid. Generally the effusion consists of serous fluid, which is at length spontaneously re- absorbed ; the lung expands again, or the walls of the chest shrink inwards : and the ultimate state of such a patient is as good as it probably would have been after a successful tapping. To make assurance doubly sure, it is always right, before proceeding to the ope- ration of paracentesis, to adopt the expedient first suggested and used, I believe, by Dr. Thomas Davies, of trying the chest by means of a grooved needle ; making a tentative exploration of the nature of its contents in that manner. The passage of this little instrument — like the dismissal of a pilot balloon — affords information which is useful in guiding the particulars of the subsequent process. It not only ascertains that there really is liquid within the pleura, but it discovers the kind and quality, and exact place, of the liquid. If it be serous, it will flow readily along the groove, and trickle down the patient's side. \i it be puriform and thick, it will not exude so freely, but a drop or two will probably be visible at the external orifice; and when the needle is withdrawn, its groove will be found to contain pus. In the former case, it is possible that there may be no false membranes ; in the latter, they are likely to be thick. You would use a larger trocar to evacuate the thicker fluid. The puncture thus made is quite harmless, and inflicts very trifling pain. Dr. Davies gives this useful piece of advice in respect to the trocar, that its point should be sharp ; for otherwise, after the serous membrane has been penetrated, if there happen to be thick tough layers of coagulable lymph, not very closely attached to PLEURISY. 599 the costal pleura, they may be driven before the instrunaent, and so the liquid will not be reached, but the operator will be perplexed and baffled. Connected with the operation itself there are some questions concerning which medical opinions and medical practice are not yet settled. I do not pretend to decide these questions ; yet I cannot pass them by — I must point them out to you ; and I shall, at the same time, state what my own observation has suggest d in regard to \hem. 1. Should all the liquid be let out at once ? Some say yes : some say no. If we appeal to experience on this point, we obtaia no satisfactory answer. I have known patients get rapidly and perfectly well, after as complete an evacuation of the liquid as was possible. On the other hand, I have heard of speedy recovery when, by a sort of accident, very little had been with- drawn ; enough to relieve the pressing distress ; but much less than the operator intended. We must try the matter, therefore, by our reason. I think it very probable that when the serous membrane is stretched by the pres- sure of its contents, its natural absorbing power may be lessened. But we have no reason to suppose that the mere relief of this tension will often suffice to renew the process of absorption, and to enable the flattened lung to re-expand. The theoretic objection to the thorough emptying of the thorax in such cases is (1 conceivej, that the introduction of air is likely to be hurtful, by converting the adhe- sive into the suppurative form of inflammation, and by promoting decomposition of the extravasated fluids. No doubt there is this risk ; but, in general, it cannot be avoided. Unless the lung freely rises at once, the liquid cannot all, nor even much of it, come out, without air getting in. Some attempts have indeed been made, of late, to draw the water into an exhausted bag, by the help of a pipe and stop-cocks. But it is obvious that, in most cases, very little can be so abstracted. The mere admission of air to the pleura does not necessarily create inflammation of the mem- brane. This we know from what happens sometimes in emphysema produced by a fractured rib. In the only instance of pure pneumothorax which I ever saw, the sac of the pleura had become half-filled with air, through a very minute opening in the pulmonary membrane, communicating with the air-passages. There was no mflammation of the pleura in that case. Except that it was preternaturally dry, it seemed perfectly healthy. Neither does the access of air necessarily superinduce suppuration in the membrane already inflamed. Certainly, if pus follows the passage of the instrument, as much should be removed as we can get. And, for my own part, I should take away as much as would come, if the inclosed liquid proved to be serous. • 2dly. Is the orifice to be healed up, or to be kept open ? Here, also, practical men differ. I should say, if pus comes out, by all means keep the aperture open ; and inasmuch as detention of the pus would be injurious, and the depending point is difficult to hit, and the orifice is apt to clog, I would do more than leave it open : I would draw the puriform fluid ofT twice a day by a syphon. If serum is let out, by all means close and heal the wound. Then, if all goes on well, our object is achieved. But should the condition of the patient fail to improve ; should hectic fever, after a day or two, set in or even continue ; should much consti- tutional distress or disturbance arise ; — under such circumstances, I would re-open the wound. There was mere serum, or liquor sanguinis : there now is, in all pro- bability, puriform matter pent up in the pleura, and even stinking and poisonous gases. On six occasions I have myself witnessed the evacuation, by puncture, from the human pleura, of a clear transparent liquid. Some of the patients were under my own charge, some under the charge of others. Of these six patients, one died the day after the operation ; I can scarcely say why. She was an extremely timid and susceptible J'eung woman ; and I am inclined to attribute her death to the shock pro- duced, by apprehension of the operation, upon her sensitive nervous syste n. Two others recovered forthwith, and perfectly. The wound presently healed in the threr. 600 PLEURISY. remaining cases also ; but in one of the three it soon broke out again, and a quantity of h-althy pus was discharged daily. After some time, the expedient of keeping the cavity free from accumulated pus by the use of a syphon was resorted to. Under this plan the discharge became gradually less and less, and at the end of many months it finally ceased. The patient has a contracted chest, but his general health is quite re-established. He was on the brink of sufTocation when the operation was performed. I have been told of a man who, for the last fifteen years, has had a similar thoracic fistula, and who has nevertheless, during nearly the whole of that period, being actively engaged in the various labours of a farm-servant. I have still two of the six patients to account for. They were both much reheved by the operation for a while ; but after a few days they again fell off; and after many more days of gradual sinking and distress, they died. The cavity of the pleura contained, in both cases, much puriform liquid, and a quantity of most offensive gas, consisting in great part, as I judged from its odour, of sulphuretted hydrogen. I have since thought that both these patients would have had a much better chance for life, if this corrupt and corrupting mass had been duly removed. Again, I have twice seen pus let out, by the primary puncture of the chest. One of these two patients sunk, exhausted, some months after the opening, which never healed, was made. The empyema of the other had been occasioned by fracture of a rib. The discharge continued for a short time, then ceased, the orifice closed, and the lad got well. This constitutes the amount, or nearly so, of my personal experience of the ope- ration of paracentesis thoracis. You will see, in the statement I have been making, the grounds of those opinions which I have formed and expressed respecting it. A full and final solution of the grave and difficult questions that it involves would re- quire a much wider field of observation than any one individual is likely to command. Dr. Thomas Davies has published a tabular account of the several cases of operation which he had then superintended. In sixteen cases of empyema, so treated, there were twelve recoveries ; that is, the operation was successful in three-fourths of the whole number of cases : a very encouraging result. In three of the less fortunate cases, the lung could not expand after the evacuation of the fluid, in consequence of the thickness of the false membranes covering it. The value of Dr. Davies' table would have been greater, if it had shown in each case the time, after the commencement of the disease, at which the operation was performed ; the symptoms that called for its performance ; the nature of the liquid evacuated ; and whether the orifice made by the trocar was closed or not. The quantity of liquid which the distended pleura is capable of holding is enor- mous. I have seen upwards of a gallon let out at once. Dr. Townsend mentions the case of a patient of Dr. Croker's, in Dublin, from whose left pleura Mr. Cramp- ton drew off the almost incredible quantity of fourteen imperial pints of pus. Of course this could not have accumulated there without making injurious pressure in all directions : upon the ribs, upon the heart and mediastinum, upon the diaphragm, and the abdominal viscera beneath it. It is interesting to know with what rapidity the capacity of the diseased side of the thorax will, in favourable cases, diminish. The same writer gives the history of a boy, 12 years old, in whom the circumference of the diseased side was sixteen inches and six lines, while that of the sound side was fourteen inches and one line. JNine days after the operation the circumference of the diseased side had decreased nearly three inches: it measured thirteen inches and nine lines ; that is, rather less than the circumference of the healthy side. The side had shrunk somev.-hat within its natural size. This is common in such cases. There is yet a third question of some importance. Whereabouts should the opening be made ? If any soft inelastic tumour has appeared, marking a tendency in the effused liquid to make its own way outwards, that tumour should be punctured without loss of time ; for there will be no chance of the reabsorption of the pus ; and if the swelling be left to itsflf, troublesome, burrowing sinuses will be apt to form in the thoracic and abdominal parietes. As we have no choice in such a case about the place where the aperture is to be made, authors have termed the operation the operation PLEURISY. bUl of necessity ; and they distinguish the case in which the surgeon is at liberty to m troduce his trocar whenever he pleases ; they say that then the operation of election takes place. Now the question is, what spot is the best for this operation of election ? If there be any part of the surface which is resonant on percussion, or which affords any sound of respiration, that part must be avoided. It is probable thai the lung, in that place, is fastened by adhesions to the costal pleura. Of course you would not thrust in a trocar where you saw or felt that the heart was beating. The object to be kept in view is that of making the opening in the situation which will allow the most free and perfect vent for the liquid. The intercostal space between the sixth and seventh true ribs, where the digitations of the serratus major meet those of the obliquus externus muscle, is the place usually recommended. Laennec prefers the space between the fifth and sixth ribs. He observes that, on the right side, an enlarged liver frequently reaches as high as the sixth, or even as the fifth rib. When the diaphragm is pushed as high as this (and I believe that Dr. Edwin Harrison, who has paid much attention to this point, will tell you that it is often pushed up even higher) there is an obvious risk of penetrating it with the trocar. In fact, Laennec committed that error himself. After making an in- cision between the fifth and sixth ribs, he thrust the instrument, as he supposed, into the thorax; and was a good deal surprised to find that no gush of liquid fol- lowed its introduction. The patient died ; and dissection showed that the trocar had entered the cavity of the abdomen after transfixing the diaphragm, which, having been forced upwards by a large liver, had contracted firm adhesions to the seventh rib. I have myself witnessed a similar mischance, on the other side of the chest. The integuments of the side were csdematous ; and it was thought that a little serum issued upon the passage of the grooved needle. The serum must have come from the infiltrated areolar tissue. No liquid was evacuated by the trocar. The patient died a day or two afterwards of peritonitis. The instrument had perforated the diaphragm, and entered the spleen, which was unusually large. I am tempted to relate the particulars of one of the prosperous cases that I before briefly adverted to. It occurred in a lad of nineteen ; a patient of my col- league, Dr. Wilson. On his admission into the hospital he bore all the marks of copious effusion into the left pleura ; the side enlarged and motionless, and dull on ..percussion ; the intercostal spaces tense, and even with the ribs ; the heart beating to the right of the sternum; respiration puerile on the right side, inaudible on the left ; urgent dyspnosa ; a tendency to coma, marked by drowsiness and blueness of the cheeks and lips. In short, the boy was on the very verge of suffocation. He had been ill about a month : and had been bled, and cupped, and brought under vhe specific influence of mercury. Dr. Wilson judiciously directed that the liquid should be let out. A grooved needle was first passed between the fifth and sixth ribs ; and some serum following the puncture, a trocar was then introduced by Mr. Tuson, and nine pints of a clear fluid were drawn off. During the operation the patient became faintish at times, and then the orifice in the canula was stopped for a moment by the finger. The immediate effect of the tapping was most interesting and grati- fying. Even while the liquid was flowing, the heart was observed gradually to move over from beneath the right mamma towards its natural situation ; and his difficulty of breathing was signally relieved. At the beginning of the operation he respired fifty times in a minute ; at its conclusion thirty-eight times only. A good deal of air entered while the liquid vvas escaping: and for some days after the operation a splashing sound vvas audible on succussion of the chest : and one part of that side was unnaturally resonant, when struck, and another part unnaturally dull ; and whatever was the posture of the patient, the hollow sound was uppermost, and the dull sound was undermost ; and when he sat up and spoke, or coughed, a brazen resonance was heard by the ear applied to the scapular region. This lad got quite well, without the recurrence of a single bad symptom. He afterwards presented himself at the hospital ; and I understand that the left side was found to bo in a very slight degree smaller than the right. The liquid evacuated in this case was clear and transparent. It separated, on 3a G02 PLEURISY. cooling, into three parts : one of quite water)- consistence, one more viscid, and a third which constituted a soft, transparent, jelly-like mass of fibrin. In this instance no injurious consequences resulted from the free admission of air It may sometimes be necessary to puncture the cavity for mere pneumothorax : when, for instance, the pulmonary pleura has been pricked by a fractured rib, and air passes from the lung into the pleural sac faster than it can be absorbed ; fast enough to compress the lung, and to threaten death by apnosa. The diagnosis of ' such a state cannot be difficult. The existence of the fracture, the t3'mpanitic sound yielded by the chest on the injured side, the absence of respiratory murmur in the tympanitic part, and the increasing dyspnoea, all point to the same conclusion. Now a trocar of the smallest size — or even an acupuncture needle — maj- suffice to give vent to the imprisoned air, which will escape with an audible hissing noise. In some cases it must have existed in a very large quantity, for the stream of issuing air has been strong enough to blow out a candle several times in succession ; the flame being each time immediately re-lighted. The same necessity for puncturing the cavity of the pleura from without may arise in cases of pneumothorax depending on specific disease in the lungs : but we cannot regard the operation as curative in such peases. Its value is very different from that which experience has shown to belong to it in empj^ema from acute or chronic (but simple) pleurisy. Yet if it saves life for the time, if it prevents im- pending suffocation, and relieves existing distress, and postpones the fatal event, it is not ivithout its value ; and it has many times been done, and been followed by very gratifying results ; but it has never, that I knoAV of, been followed by entire recovery. Dr. Davies had superintended the operation in nine instances of pneumothorax with efi'lision : and all the patients died from tubercular complications. There are, indeed, on record examples of recovery after the operation, when pneumothorax had existed, and under very unpromising circumstances. I should have stated before, that as the pus, in empyema, sometimes finds its way outwardly, penetrating between the ribs, and forming an external swelhng, which, if not opened by the scalpel, will at length burst ; so it also, sometimes, escapes bj^ making a road into some part of the air-passages, and being expectorated. Now the operation of paracentesis, in such a case, there being no tv.l'erciilar disease, has been successi'ul. Le Dran relates an instance in which he operated for empyema, where " the injec- tion of a small quantity of mel rosarum and barley-water through the wound excited coughing, and part of it was coughed up through the mouth, mixed Avith pus ;" thus clearly proving the existence of a fistulous passage through the lung ; notwithstand- ing which the patient recoA^ered completely. The effusion Avas probably circum- scribed. But you Avill find other cases of a similar kind referred to by Dr. ToAvnsend, in the Cyclopxdia of Practical Medicine. This concludes Avhat I have to say, not only of pleurisy, but also of pneumothorax, and of empyema, Avhich are often treated of as separate and independent disorders. They are more frequently connected Avith pleurisy than Avith any other form of dis- ease, and they are almost always consequences of disease or of injury. But I believe I have omitted nothing of importance in respect to either of them. [Typhoid Pneumonia. — A state of conptestion, or of inflammation, more or less intense, of the lungs, accompanied by that impairment of the sensorial powers, and morbid condi- tion of the circulation and of the organism generally, which characterize the more grave forms of typhus fever, iias repeatedly prevailed in diflerent portions of the United States, as an epidemic, often of Avide extent, and, in its earlier, visitations, producing an amount of mortality truly appalling. The first notice we have of the appearance of this form of disease, remarks Dr. Dickson, (Essay on Pathology and Therapeutics, vol. i. 435), "was in the year 1S06, in Medfield, a town of tlie ^tate of ^Massachusetts, whence it spread gradually — extending itself, iv-nter after winter, throughout New England, into Canada, and the ^Middle States, progressing fiom A'illage to village, and from one portion of the country to another, until, in 1S13, it had reached Philadelphia. In the winter of 1S15 it first prevailed in South Carolina, and was then, .and more A\-idely in ] SIC, epidemic ; since Avhich time its raA'ages in this s'ate ha'.w 'been slight. It continues to show itself, sporadically, everywhere, I believe, wheie it has oace found footing In South Carolina we scarcely pass a winter without meeting with iastances of it, espi>cially among the blacks."' PLEURISY. 603 The disease Is of frequent occurrence in other portions of the United States, and may be considered, to a certain extent, as endemic in several localities. We are informed by Dr. Gibbes, (jlmericati Journal of the Medical Sciences, Oct., 1842.) that it prevails extensively during the winter months, on the rivers, svv^ampy plantations, in the neighbourhood of Columbia, South Carolina, and destroys more negroes than all the other maladies combined to which they are ordinarily liable. According tu Dr. Dickson, it has not been observed farther south than the State of Georgia, nor is it of very frequent occurrence beyond the latitude of Charleston. Typhus pneumonia, as it prevails in the United States, is very similar in character to, and is probably the same affection as that described by Sydenham, Huxham, and others of the older writers, as peripneumonia notha. Sauvages has very accurately portrayed the disease under the denomination of peripneumonia typhcides. An account is given by the late Dr. John Bard, of New York, of an epidemic that prevailed on Long Island, in the winter of 1749, which he terms a malignant pleurisy, that in all its essential features corresponds ex- actly M'ith the disease under consideration; a similar ailectior is also noticed by Dr. Hugh Williamson, as prevailing in North Carolina in 1792. Typhoid pneumonia is described by Dr. Stokes as not uncommon in Ireland, while Dr. Burne, of the Westminster Hospital, mentions that a great number of cases of what he calls "the spotted fever," were brought into that institution in the year 1838. He describes the affection as "an adynamic or typhus fever, combined with a latent and dangerous pneumonia, and exhibiting on the surface a very regular and uniform spotted eruption — not petechiaj." This is evidently the same disease as the typhus pneumonia of this country, which, when'it first attracted attention, was so frequently attended with an eruption upon the skin, that it was very generally designated by the popular name of spotted fever. The eruption, how- ever, soon ceased to attract attention ; it was seldom observed as a phenomenon of the dis- ease south of the Potomac, and even in the northern and middle portions of the United States, the eruption ceased early to present itself Dr. Mackintosh, of Edinburgh, describes a forni of pneumonic inflammation, attended by symptoms that are generally denominated t3^phoid, and which, in consequence, has obtained the name of pneumonia typhoides, as very prevalent among the British troops stationed in exposed situations along the coast, and in large garrisons where the duty is severe. Dr. Mackintosh, however, objects to the adjunct typhoides, as expressing erroneous ideas of the pathological condition of the body; — and the objection is not without foundation — for although that peculiar form of pulmonary engorgement quickly followed by inflammation aiid hepa- tization, to which the term typhoid pneumonia has been applied, does very frequently occur in connection with genuine typhus, it is likewise a very common complication in certain seasons and localities of the bilious remittent fever, while it is also met with in cases of gastro-enteritis, of ambnlent and erratic erysipelas, of diffuse cellular inflammation, and of other diseases by which the thoracic affection is more or less modified, and often completely masked; hence to denominate the pneumonic disease as essentially and invariably typhoid in its character is evidently a misnomer, and very liable to lead to serious errors in practice. In the United States the disease is known by various names, according to the predomi- nance of particular symptoms. In the more violent cases, the patient being suddenly seized with a very severe chill, accompanied with marked coldness of tlie surface, it is, according to Dr. Gibbes, frequently denominated the cold plague. The head being almost invariably affected, before the pneumonic symptoms are developed, it is often called head pleurisy. In tlie autumn or spring, when, in particular districts of country, it is frequently attended by the symptoms of ordinary bilious fevers, it is called bilious pleurisy. From the symptoms of pros- tration by which the disease is so generally attended throughout its whole course, and the rapidity with which the patient sinks in the more violent cases, the term typhoid pneumonia has become, however, the one by which it is most frequently designated. In its mode of attack, and the general symjitoms by which typhoid pneumonia is ordinarily attended, there is no uniformity. Usually, however, the disease is ushered in by a chill, which is often of great severity and long continuance — the heat of the whole surface being to the touch much below the standard of health. The cold stage is not unfrequently so in- tense as to destroy the patient before the slightest reaction occurs. Where the disease is vio- lent in its attack. Dr. Gibbes states, that the patient may suddenly become cold and pulseless, lethargic, and often insensible without previous complaint ; he has known instances in which the patient was foimd dead, or died within three or four hours after being apparently well During the cold stage, the respiration is short and oppressed, and a pain on one or othei side of the chest is generally complained of; pain of the head is also present in most cases; and not unfrequently the patients experience severe pains in the back, limbs, and other parts of the body — similar occasionally to those of rheumatism. The muscular strength is greatly prostrated, and there is a sense of general uneasiness and great rest.'pssness. .Vfier a period. longer or shorter in different cases, but usually protracted, reaction ensues, and the heat of the surface is restored — it is seldom, however, increased much above the ordinary standard of health. The heat is often unequally ditfused over the surface — portions being decidedly 604 PLEURISY. hot while others arc comparatively cool. Occasionally, the skin hecornes hot, dry and harsh, while, at other times, it is relaxed, cool, and clammy. The pulse, when reaction ensues, becomes somewhat fuller, and more quick and frequent, but in very few cases does it acquire any degree of tensioii, excepting, perhaps, when the disease attacks young subjects and those who retain some degree of vigour. Most commonly the pulse is soft, or it yields to the slightest pressure. During the febrile stage, the pain, oppression of the chest, and difficulty of respiration are increased, and, very generally, a cough comes on within the first twenty- four hours, by which the pain in the thorax is greatly aggravated. When the cough is at- tended with expectoration, the pain in the side is considerably relieved, and the oppression of respiration diminished. When, however, the cough continues dry, or the expectoration is slight, all the more serious symptoms become aggravated. The matter expectorated is a thick, tenacious mucus, often tinged with blood, but at other times of an ash or dark-brown colour. The respiration besides being oppressed is usually hurried, and irregular — the pa- tient's spirits are greatly depressed — he often utters deep and heavy sighs, and complains of a sense of weight, or of constriction at the prsecordia ; he is often affected with nausea, and occasionally with vomiting. Dr. JNIann (il/erf. Sketches, page 308), notices, as a common symptom of the disease, a re- markable pink-coloured suffusion over the whole face, distinct from the usual febrile redness of the cheeks — the face becoming, at the same time, puffed or bloated. This appearance is most conspicuous in individuals of a light complexion j it is present, also, upon the body, but to a less extent. In nrany cases it is not observed even on the face, or in a very slight degree, and for a short period. The tongue, in the first period of the disease, is often clean but red, particularly at its edges ; in other cases, and perhaps most commonly, it is thickly coated with a yellowish mucus, which, in the progress of tlie disease, changes to a dark-brown — the tongue becoming, at tlie same time, dry, hard, and rough — often chapped. Upon the separation of the crust, the tongue presents, not unfrequently, a bright-red colour, which colour occasionally pervades also the fauces. In many cases, the patient exhibits from the very commencement of the attack, particularly where there is much pain of the head, more or less delirium, and great restlessness. As the disease advances, the teeth and the whole interior of the mouth become coated with a dark-coloured sordes ; the breathing becomes shorter and more oppressed — the strength more prostrated, the pulse smaller and weaker — the patient sinks into a state of low muttering delirium or of coma, more or less complete, and the fatal event takes place as in the ordinary cases of typhus fever. The duration of the disease is very variable. Death, as we have seen, may occur within a very few hours from the commencement of the attack. Dr. Mackintosh has seen the dis- ease, in the strongest subjects, run its course to a fatal termination in from forty-eight to sixty hours j while Dr. Gibbes has known patients to be destroyed by it in from three to twenty hours. In other cases, the disease may continue for several days before a fatal event occurs. In cases where, under an ajjpropriate treatment early commenced with, the nervous power is quickly aroused, the activity of the circulation is excited and a free action of the peripheral capillaries restored, according to Dr. Gibbes, the attack may be cut short, without the occur- rence of any symptoms of pneumonic disease. When symptoms of pneumonia become developed, these will often yield to a proper treat- ment, within the first thirty-six or forty-eight hours, though they will occasionally continue for six or seven days, or even longer. The pulse increasing in volume and in firmness, the surface becoming, throughout, warm, soft, and moist, the tongue cleaner and less red. the delirium diminishing, the expectoration becoming more free and copious, the cough less fre- quent and annoying, the pain of the thorax less intense, the respiration more full and easy, and the occurrence of a quiet sleep, from which the patient awakes refreshed and with greater cheerfulness, are the certain indications of amendment — recovery, however, is in general very slow — tlie period of convalescence being protracted, while relapses readily occur from slight exposure or the least imprudence of any kind. Dr. Gibbes states, that he has frequently known patients who were convalescent and able to walk about, complaining, in fact, of nothing but debility, to "yield suddenly to a cold change of weather, and die in a few hours, or linger several days with pneumonic symp- toms." Symptoms that were before mild and favourable, will often become aggravated upon a change in the atmosphere to cold and damp. If a patient has been much enfeebled by a first attack, a second is very likely to prove fatal. In many cases of pneumonia typhoides, instead of a gradual decline of the symptoms of thoracic disease taking place, these cease suddenly, and a severe pain is immediately expe- r'enced in some other and perhaps remote part of the body, as in the region of the liver, in the bowels, or in the head, attended with the other symptoms of inflammation in these ports. According to Dr. Gibbes, when upon the cessation of the thoracic symptoms, a he- inoiThage from the bowels ensues, it is generally critical — when inflammation of the brain or peritoneum takes place, the case usually terminates fatally. PLEURISY. 605 The foregoing is the description of pneumonia typhoides as it most frequently presents itself. In the different epidemical visitations of the disease, at different seasons, and in dif ferent localities, or even during the same periods and in the same places, it not unfrequently, however, assumes a very ditferent form. Thus, in some cases, the only symptoms which the patient exhibits are extreme prostration and wandering pains of the back, loins, shoul- ders or legs. In other cases, after a severe and protracted chill, the patient is seized with severe pain of the head and back, and great gastric distress — delirium soon sets in, which quickly gives place to coma, and death ensues within a few hours. " Occasionally," remarks Dr. Gibbes, " an acute pain in the back part of the eye, in the ears, or side of the neck, with stiffness of the muscles, is present. In severe cases the ton- sils, the submaxillary and sublingual glands are swollen, with acute pain in swallowing ; these are usually the worst cases." In a few instances the symptoms of genuine erysipelas present themselves on some portion of the skin, and invade successively almost every part of it. In these irregular forms of the disease, the symptoms of the thoracic affection are often very slight, or they may be entirely absent. There is usually, however, some sense of tightness about the chest, some difficulty of respiration, and a slight occasional cough — with or without expectoration ; and it is remarked by Dr. Stokes, that the physical signs of pneu- monia may frequently be detected in cases unattended with dyspnoea, pain, cough, or expectoration. A very common form of the disease under consideration — and which at certain seasons, and in particular districts, is even more prevalent than that to which the appellation typhoid is ordinarily applied — is the one usually known as bilious pleurisy or bilious pneumonia. In this, the attack commences with symptoms differing but little from those which usually usher in an ordinary case of bilious remittent fever — there is, perhaps, in general, a more severe and protracted chill, and a sense of distress and oppression about the chest, which is not usually observed in the latter disease. Occasionally, the attack is preceded, for a day or two, by a sense of fulness and weight in the right hypochondrium, and, in a few cases, by symptoms of a dysenteric character. Very generally there is severe pain of the back and extremities, and often of the head also. Almost invariably, the attack is accompanied by an acute pain of the forehead — well-marked febrile symptoms, with, usually, decided exa- cerbations in the morning and remissions towards evening. — During the exacerbations the face is flushed, and as the skin, from the commencement of the disease is more or less tinged with bile, the mixture of red and yellow gives to the countenance a very peculiar, sickly aspect. The eyes are red and watery, the conjunctiva having often a deep yellow hue. In many instances, it is only after the fever has continued for several days that pain in the chest is complained of: this is sometimes very severe and acute, more commonly, however, it is obtuse — of an aching rather than of a lancinating character — there is, at the same time, a sense of weight and oppression of the chest, with more or less difficulty of respiration and cough. The cough is at first dry, and its repeated paroxysms cause an increase of the pain in the thorax and head. The expectorated matter is frothy and of a yellowish colour, often streaked with blood, and of variable consistence. The tongue is, at first, coated on its sides with a whitish mucus, while at the centre it is covered by a dark-yellow or brownish crust — the edges of the tongue are ordinarily of a decided red. As the disease advances, the tongue becomes dark-brown, dry, and hard. The pulse is usually small, frequent, and quick, with a slight degree of tension. There is always more or less gastric distress, and very commonly vomiting, the matter discharged from the stomach being often bile or a thick ropy mucus mixed with bile. In many cases the epigastrium is hot, and painful upon the slightest pressure. The urine is always of a deep yellow colour from the presence in it of the colouring matter of the bile. The stage of excitement in bilious pneumonia is ordinarily of short duration, and, unless the disease is arrested by an appropriate treatment, great muscular prostration speedily supervenes, and the same train of symptoms ensue as in the tyj)hoid form of the disease. In the affection we have described, under whatever form it may present itself, the periou of convalescence is always slow, irregular, and for a long while in)perfect. "Chronic hepa- tization, with or without hectic fever, or a lurking congestion, may continue for weeks ; and although, under appropriate management, the disease may be ultimately removed, atrophy of the lungs, with or without ulcerative disease, is often established. In certain cases, months may elapse before the respiratory murmur is heard, and, in many instances, it is never re- established. On the other hand, it has been known to cease in a single day, on the super- vention of an attack of gastritis or enteritis." (^Dnnglison' s Practice of Medicine, vol. i. 313.) The principal exciting cause of pneumonia typhoides is unquestionably protracted expo- sure to a damp and cold atmosi)here, while the predisposition to its attacks is promoted by all those causes which tend to reduce the vital energies of the system — as bodily or menta' fatigue, intemperance, improper or deficient diet, insufficient clothing, mental distress or anxiety, long watching, previous disease, &c. Nothing, remarks Dr. Mann, predisposes to its attack in So high a degree as an intemperate use of intoxicating drinks. The soldiers, sayi 3 a2 606 PLEURISY. Dr. Mackintosh, were often seized with the disease who were exposed at night as sentinels — "instead of walking; about they frequently stand shivering in their sentry-boxes, the surface continues long chilled, and with a view to fortify themselves, and to produce warmth, the/ are in the habit of drinking ardent spirits in considerable quantity." It is a common complaint among the poor and labouring classes in many parts of thla country, during the prevalence of long-continued cold and damp weather, such as frequently occurs during the spring and autumn, in the more northern states, as well as during the open winter of the middle states. In the south, according to Dr. Gibbes, it is rarely met with on highland plantations, and if at all, is confined to such negroes as are more or less exposed to work on low or wet ground. On the swamp plantations the disease is endemic. As we have already stated, the disease occasionally occurs as an epidemic, but generally, during seasons when the temperature of those districts in which it prevails is marked by sudden and considerable vicissitudes from heat to cold, and by extreme and long-continued moisture. Typhus pneumonia more frequently attacks males than females, and aduhs than children — • this is a statement in which nearly all who have written upon the disease concur. The pre- disposition of adult males to its attacks, is very readily explained by the axuount of exposure and fatigue to which they are usually subjected being much greater than that of females and children — and probably, also, from the fact that their habits, geiaerally speaking, are much less temperate. The disease is not, however, confined to any age, nor are females and chil- dren entirely exempt from it, particularly when it prevails as an epidemic. It is usually, however, most severe in individuals over fifty years of age, and is very seldom seen in chil- dren under ten years. The negro race is particularly liable to its attacks. In the treatment of pneumonia typhoides much must necessarily be left to the judgment of the practitioner. In the selection of his remedies, more perhaps than in any other disease, must he be guided by the particular character of the symptoms present in each case. It is all important that the true nature of the disease be carefully investigated in its earliest stages — it being then, in its ordinary form, readily controlled by an appropriate treatment, and, even when marked at its onset by symptoms of very considerable severity, it may often be arrested by prompt and judicious management. In this disease, Dr. Gibbes remarks, and a similar observation is made by others," if the cases are immediately attended to, it is found quite manageable, as much so as an ordinary catarrh; but when neglected for twelve or twenty-four hours, and the symptoms are at all aggravated, the patients are very apt to die." We shall often succeed, when the patient is seen during the first period of the attack, or diuing the cold stage, as it is not improperly termed, in rousing the nervous energy — pro- ducing a free and equable circulation, and a due degree of heat and moisture upon the sur- face, by resorting at once to moderate doses of opium, cainphor, calomel, and ipecacuanha, in conjunction M'ith the milder class of diffusible stimulants internally, and the application of heat and rubefacients externally. By this treatment, early and judiciously pursued, and carefully watched so as to prevent a state of over-excitement being produced by it, the en- gorgement of the lungs may often be prevented or removed, and a speedy restoration of health secured to the patient. In the more open form of the disease, known as bilious pneumonia, the early administra- tion of an emetic will often be found beneficial. Richter states, that in the bilious form of the disease, emetics will often remove the pain and aflection of the chest as by a charm, and Stoll makes the same observation {Ratio Meden., i.). In the few cases Dr. Eberle had seen of bilious pneumonia, he states that the utility of emetics in its treatment was strikingly evinced. They, in general, bring on an uniform diaphoresis, promote expectoration, and allay the pain in the thorax, often almost immediately. Dr. Dickson also remarks, that he has been much pleased with the effects of the early administration of an emetic, or an emetico-cathartic. A combination of ipecacuanha and calomel may be given, or the sulphate of magnesia dissolved in a strong infusion of seneka or serpentaria, with the addition of twenty grains of ipecacuanha. Dr. Mann, likewise, speaks favourably of the effects of an emetic of ipecacuanha. In the more decidedly inflammatory cases, the emetic was not ad- ministered by him until after bleeding and cathartics had been employed ; especially where the head or chest was affected with severe pain : — when after the occurrence of expectora- tion, this had become arrested from any cause, small emetics, he states, were found benefi- cial, and in many cases had to be frequently repeated. The emetico-cathartic or even the emetic alone, is, however, a remedy of very doubtful propriety in cases attended with early symptoms of prostration and extreme muscular debility. The propriety of blood-letting in any of the forms of typhus pneumonia, has excited not a little controversy. By some practitioners, the use of the lancet is condemned in every case, as a remedy fraught with danger, from its liability to induce speedily a state of prostration fiom which the patient is witli difl5culty roused; while others of equal celebrity insist upon ihe necessity of full and even repeated venesection — considering it to be an important, if not an mdjspeiisable remedy in the treatment of the form of pneumonia under consideration. PLEURISY. • 607 This discrepancy of opinion is satisfactorily accounted for by the very different characters under which the disease presents itself in different localities, and at different periods — often, indeed, during the same epidemic visitation ; south of the Potomac, we are informed by Pro- fessor Potter, that the disease is seldom so inflammatory as along the shores of New Jersey Delaware, and Maryland; and the farther south, the more it is said to assume a middle ty- jihoid complexion. In the winter epidemic of 1815-16, along the northern frontier of the United States, we are assured by Dr. IVIann, that in many districts " the disease was highly inflammatory from its commencement to its final resolution," and that, " it was as idle to administer stimulants for its cure, as it would have been to have poured oil on fire to extin- guish the flame." "Its cure," ho adds, "depended upon the assiduous administration of the antiphlogistic regimen: evacuants, expectorants, and diaphoretics, with the aid of blisters." It is very certain that in the ordinary cases of typhoid pneumonia, the use of the lancet will seldom be demanded, and in many, would be altogether inadmissible. Cases, it is true, will not unfrequently occur, in which the detraction of a moderate quantity of blood from the arm, during the early period of the febrile stage, will be productive of the best effects. General blood-letting, however, should always be resorted to with the utmost cau- tion — perhaps it would be better, in every instance where symptoms of a typhoid character early set in, and the loss of blood is considered advisable, to apply cups to the chest in pre- ference to resorting to the lancet. In cases of bilious pneumonia, blood-letting will be much more frequently demanded than in the typhoid form of the disease ; but even in these it should be resorted to only in the early period of the attack, and it is more safe to take away a sufficient amount at the first bleeding, than to trust to small and repeated bleedings. In the bilious form of the disease, when much pain or tenderness of the epigastrium is present, leeches or cups to this part are always proper, and will often be found to afford very decided relief. The bowels should be early evacuated by some mild but effective laxative — the best is unquestionably calomel in moderate doses, followed by castor oil or magnesia — active or "A-atery purging should always be cautiously avoided. In the cases marked by early prostration, and extreme muscular debility, we should resort at once to moderately stimulating diaphoretics ; of these, according to Dr. Dickson, camphor, nitrous ether, the carbonate and acetate of ammonia are the best ; and they are rendered more beneficial by combining them with Dover's powder. " The efiicacy of all these," he adds, " will be much aided by the pediluvium, and by the application of warm fomentations, poultices, and heat in various forms to the surface of the patient. Cataplasms with mustard must be laid over the chest, if pain or dyspnoea is present, and applied also to the wrists and insteps. Epispastics are also of use, by their double power of stimulants and revulsives tlie back of the neck, if the head be affected, the sternum and the epigastric region, if the lungs or heart or stomach suffer, should be selected for their application. There has been some dispute as to the preference due to the dry or moist form of heat, as the best to be re- sorted to in this disease. It is, I think, easy to decide. If the skin be dry, I prefer fomen- tations, or even the vapour-bath ; if moist, I prefer bottles of hot water, heated bricks, bags of hot salt, chaff, &c. Sweating will in the greater number of cases, come on readily, but must be regulated. If too profuse, and kept up for too long a time, it may prove injurious and debilitating. You restrain it by substituting dry for moist applications, and removing some of the bed-clothes, and changing cautiously the body linen of the patient; dry garments carefully and well aired, being put on in the place of those moistened by the cutaneous discharge." In cases where a tendency to sinking is early evinced. Dr. Gibbes recommends sma.l doses of calomel as a general excitant of the secretions, with camphor, opium, carbonate of am- monia, and free vesication. In nearly every form of the disease, whether typhoid, bilious, or more openly intlam- matory, the effects of small doses of calomel, combined with ipecacuanha and opium are spoken of as particularly beneficial. Large blisters over the chest will also, in most cases, be found of the highest importance, from the very commencement of die attack. In obstinate cases. Dr. Mann directs them to be renewed daily until the pain of the chest is removed. Where the patient's strength rapidly fails, and he is sinking into diat low typhoid condi- tion which marks the second period of die disease, stimulants must be freely resorted to : of these Dr. Dickson prefers " the volatile alkali in large doses, from five to ten grains every half hour or hour, widi wine whey or brandy toddy; spts. nit. dulc., spts. of turpentine, the tincture of cantharides." "I can set," he remarks, "no limit to the administration of this class of remedies, but the excitement of a notable degree of reaction, which being observed, will guide you in the future quantities to be exhibited ; taking care, however, that the patient shall not suffer by dieir timid or ineflicient amount, nor be allowed to retrograde by any sud- den subtraction of dose." " It is well to be reminded," observes the same writer, " that in this strange disease it ia never permitted to despair of your patients, recoveries being in considerable number recorded 608 PULMONARY HEMORRHAGE. fiom circumstances the most deplorable, and, indeed, to all reasonable anticipations, abso lutely hopeless." During the whole period of convalescence the patient will require to be watched with care. — - You must abstract gradually from the amount of stimulants which have been given him, and substitute in their stead the more permanent tonics. Of these each practitioner has his favourite. Arsenic is preferred by many of the New England physicians, and is, accord- ing to Dr. Dickson, without doubt, highly serviceable." The muriate of iron is also spoken of as well adapted to this period of the disease — and is certainly preferable in all respects to the arsenic. Dr. Mann states, that the only stimulant employed by him in the convales- cent state, was a mixture of spts. nit. dulc, and aqua ammoniae ; a teaspoonful of this proved a cordial and expectorant, at the termination of the disease, when repeated every two or three hours; as did, also, a mixture of equal parts of the camphorated tincture of opium and antimonial wine, where the cough was troublesome. Other practitioners prefer, as a tonic, at the close of the disease and during the period of convalescence, the cinchona or the sul- phate or muriate of quinia. Dr. Dickson gives the bark in infusion, combining it with ser- pentaria, adding to each dose a small proportion of carbonate of potass, and camphorated tincture of opium. The patient should be supplied with a light diet of nourishing and easily digested food — and should be guarded sedulously from the slightest amount of exposure to cold or damp, and should be guarded from sudden alternations of temperature for a con- siderable time after recovery • — he should to that end vi^ear flannel next his skin, and adapt his clothing not only to the season, but to the temperature of each day and each portion of the day. — C] LECTURE LIV. Pulmonary Hemorrhage ; its varieties ; its connection with pulmonary consump- tion, and with disease of the heart. Pulmonary apoplexy. Prognosis in Hxmoptysis. Symptoms. Treatment. Having gone over the inflammatory affections of the organ of respiration ; having brought before you inflammation of the membrane which lines the air-passages, or bronchitis ; inflammation of the membrane which invests the lungs, or pleurisy ; and inflammation of the ichole substance of those organs, or pneumonia ; I proceed next to the subject of pulmonary hemorrhage. You may remember that, in an early part of the course, I drew your attention to some general facts respecting internal hemorrhages. I showed you that the blood does sometimes proceed from visibly ruptured vessels, but that it is much oftener poured forth from unbroken surfaces, in the way of exhalation ; and that hemorrhage of this kind takes place from the mucous membranes far more frequently than from any other natural surface of the body. I observed also that such hemorrhage is almost always preceded by congestion ; either by active congestion, which is less common, or by passive and mechanical, which is extremely common : and we speak, accordingly, of active and passive hemorrhage. Hemorrhage is also sometimes primary, or idiopathic, and then constitutes the whole disease ; while at other times it is merely a symptom, direct or indirect, of some other disorder, in which case we call it secondary. Now in the lunsfs we find examples of all these varieties of internal bleeding; but pulmonary hemorrhage is secondary much more often than it is primary. In speaking, therefore, of some forms of pulmonary haemorrhage, I must touch upon certain diseases of which the bleeding is a symptom : but I shall not go further into the consideration of those diseases at present, than may be necessary to elucidate the hemorrhage. Bleeding from the lungs is a thing of most fearful interest ; and It will be useful to take a general view of that phenomenon, whether it be a substan- tial disease in itself, or merely a sign of other pre-existing diseases. Tne blood, then, in pulmonary, as in all other hemorrhages, may issue through a breach in the walls of some considerable blood-vessel ; or it may proceed from innu- merable points in the mucous membrane of the lungs, by the process of exhalation : «nd the latter mode of hemorrhage is much the more common of the two, although PULMONARY HEMORRHAGE. 609 it is the popular belief tfiat the "breaking a blood-vessel in the lungs" is of very- frequent occurrence. The particular vessels injured in the first class of cases, and the nature and origin of the breach made in their sides, are matters of infinite variety. Sometimes the blood is extravasated through apertures, the results of a disorg:mizing process which has commenced in the coa-ts of the vessels themselves ; as when, for example, aneu- risms of the thoracic aorta, or of its primary divisions, burst, and pour their contents into the air-tubes. Having pointed out this accidental and hopeless form of pulmo- nary hemorrhage, I shall postpone any further account of the disease that gives rise to it, to a future lecture. Sometimes, again, a large blood-vessel is laid open by the encroachment and ex- tension of disease from contiguous structures. Here is represented (Carswell, fasc, vi. plate iii. fig. 5) the perforation of a large branch of the pulmonary artery, and of a neio-hbouring bronchial tube, by the extension of tubercular ulceration. The blood escaped so abundantly in this case, that the patient was dead in less than a quarter of an hour. And here I show you a preserved specimen of a similar opening made in the pulmonary vein. It will be necessary that T should anticipate somewhat ; and in order to include in one view all that relates to p'llmonary hemorrhage, that I should speak cursorily of Us connect'on with tubercular phthisis. No one here can be ignorant that in that terrible disease portions of the lung are liable to be hollowed out by the softening and expulison of tubercular matter, into what are called vomicx. Now seeing that hsemoptysis occurs very frequently in persons labouring under consumption, and that the expectoration of blood is often copious, and takes place when it is evident that there are tubercular excavations in the lung, it would be vevy natural for you lo suppose that the bleeding in such cases proceeded from large vessels which had been laid open during the softening of the tubercles, or by the subseq.isnt extension jf the ulcerating cavities. But in point of fact, this is very rarcbj iho case. I shall explain to you hereafter how it happens that this hemorrhage from the larger vessels is generally prevented ; still it does sometimes happen. But in a far greater number of instances the blood in haemoptysis is exhaled from the mucous membrane that lines the air-passages. For when this surface is examined in the dead body, and immediately after the occurrence of pulmonary hemorrhage, it is very often found to be perfectly entire, from the commencement of the trachea 10 the remotest divisions of the bronchial tubes ; as far, at least, as minute dissection can follow them. The membrane in these cases is usually red, as in simple bron- chitis ; but it is sometimes pale, or with scarcely any traces of vascularity. The former of these appearances results from the continued turgescence of the capillary vessels ; the ktter is the consequence of their having been completely emptied of blood by the last hemorrhage. We shall meet with analogous conditions when we come to examine the hemorrhages that proceed from other mucous surfaces ; and especially from that of the alimentary canal. When blood is thus exhaled from the mucous membrane of the air-passages, the hemorrhage may be strictly primary or idiopathic; i. e., it may be independent of any discoverable alteration of texture, either in the mucous surface itself, or in any other part which, by reason of some intelligible connection of structure or relation, seems capable of influencing the capillary circulation of the membrane. But the occurrence of pulmonary hemorrhage strictly idiopathic has been more frequently affirmed than proved. Active hemorrhage from the lungs is stated by systematic writers to be the hemorrhage of adolescence, as epistaxis is that of childhood. I believe, however, that idiopathic active hemorrhage from these organs is very rare indeed ; unless we may consider as such, certain forms o^ vicarious bleeding, which I shall presently advert to. Andral tells us that in one instance only, in whicn hemorrhage from the surface of the air-passages had been the immediate and appa- rently the sole cause of death, had he ever found the substance of the lungs free from tubercles, and perfectly healthy. He does not, however, state whether in this one instance the heart also was in its natural condition : an important omission, as we shall hereafter perceive. He relates, indeed, as an examnle, of idiopathic 39 ()I0 PULMONARY HE3I0RRHAGE. hccmoptysis, the case of a young man who suffered profuse hemorrhage from the luntrs on four several occasions, between the ages of twelve and eighteen, without any apparent detriment to his health, which remained excellent. It is consistent, however, with much experience to suppose that crude tubercles might have been scattered in the lungs of this person, and have sufficed, on the application of some exciting cause, to determine the hemorrharje, although as j'et their presence was not indicated by any other sign. Almost every systematic writer quotes, as an example of idiopatliic hemorrhage from the lungs, the story of the Roman governor, men- tioned by Pliny, who lived to the age of r 'nety, though he was afflicted with habitual hajmoptj'sis. Now the frequent citatiot of this supposed instance is of itself a suffi- cient proof that spontaneous pulmonary jemorrhage is far from being common. Cscteris paribus, the disposition to pulmonary hemorrhage is increased by what- ever tends to diminish the capacity of the thorax, and to compress the lungs, or the heart and great blood-vessels. The "lechanical congestion thus produced may be- come a very intelligible cause of the '.xhalation of blood from the mucous membrane. And it is partly on this principle that Ave may account for the frequency of hae- moptysis in persons with crooked spines ; in tailors, who sit continually in a stooping posture : in young women who lace their stays too tightly ; and even in those who labour under dropsy, or other cause of distension of the belly. Haemoptysis accom- panying ascites has been known to cease at once upon the performance of the operation of tapping, and to recur upon the reaccumulation of the dropsical fluid ; and this is not on one occasion only, but so often and regularly as to preclude all notion of accidental coincidence. There can be little doubt, however, that in this class of cases,' or at least in a vast majoritj'^ of them, the haemoptysis is mainly to be ascribed to organic disease of the heart or of the lungs ; and that the pressure which precedes and determines the bleeding is simply a concurrent cause. If we cannot properly rank that pulmonary hemorrhage as idiopathic, which is constitutional and vicarious of some other natural or morbid discharge, — and most frequently of all of the menstrual discharge in females, — it may be considered as forming a link of connection ; as lying midway between secondary and primary hemorrhages. There are a great number of very curious and well-authenticated facts upon record concerning this singular form of hemorrhage by deviation. . will give you one history of the kind by w^ay of sample; it is related by Pinel, who held that there was no supplemental hemorrhage more common than the haemoptysis that is vicarious menstruation. A female, 58 years old, born of healthy and robust parents, of strong constitution, of a sanguine and plethoric temperament, and of great sensibility, lived in the Sal- petriere, and was therefore, under constant observation from the age of 14. She enjoyed excellent health till she was 1(> years old. In her IGth year the menstrual discharge commenced without mishap or difficulty ; but this, \\ex first menstruation, was suddenly suppressed, in consequence of the fright and agitation produced by the eight of an epileptic patient in strong convulsions. From that time the catamenia never reappeared, nor did any kind of discharge take place from the genital organs , but at the next period, when regular menstruation ought again to have come on, the girl was attacked with violent hcemoptysis. The hemorrhage was preceded by vague pains in the uterus and loins, and by other symptoms which frequently announce the catamenia. It lasted two days, during which time the girl expectorated nearly a quart of blood. With one interval of exception only, this female continued to men- struate through her lungs at each monthly period, from her IGth to her 5Sth year, t. c., during 42 years of her life. The coming on of the hemorrhage was sometimes a little accelerated by strong mental excitement ; sometimes a little retarded by causes of a contrary nature. It was suspended during one whole year, without any serious impairment of the general health, or the occurrence of any other hemor- rhage : during this interval, however, the patient suffere'? most severe headaches. Occasionally the hremojotysis was complicated with ha^mateinesis. The symptoms by which the pulmonary hemorrhage in this instance was generally preceded or accompanied were the following : — a sensation of weight and uneasiness in the loins and in the .situation of the uterus, soon followed by chilliness of the surface, general PULMONARY HEMORRHAGE. 611 lassitude, and a feeling of oppression and heat in the chest, with some dyspnoea. The face became red, and she had intense headache. Then she began to have a distinct sensation of pricking, and of a sort of bubbhng, in the trachea and about the commencement of the bronchi ; then followed sharp cough, and the expectoration of blood, often bright-coloured and frothy, sometimes of a darker hue. The dura- tion of the haemoptysis was generally confined to a single day, and it never exceeded three days. It recurred with tolerable exactness at monthly periods ; sometimes the interval was longer, and then the hemorrhage continued longer, but was less abun- dant ; and upon the whole, about the same quantity of blood was lost on each occa- sion. This woman continued plump, and otherwise healthy, though liable to some thickness of the breath upon unusual exertion. Cases of this kind are not at all uncommon ; although the vicarious hemorrhage seldom persists so long and so steadily. They are not usually attended with any peril to life. It is, however, a melancholy truth, that the hemorrhage, which takes place by exhalation from the mucous membrane of the air-passages, is dependent, in a very large proportion of instances, upon incurable disease. The hemorrhage is secondar}^; and the clisease of which it is symptomatic is usually a fatal disease. And the com- plaint of which hcsmoptysis is by far the most frequentli/ symptoma.tic, is tubercular phthisis. When the tubercles are found upon dissection to be yet crude and entire, and no breach can be detected in the membrane, then no doubt can be entertained about the source and manner of the bleeding; and even when cavities exist, espe- cially if they are found to contain no blood, it is probable that, in most cases, the hemorrhage has had a similar origin. When haemoptysis is thus actually symptomatic of tubercular disease of the longs, it is liable to considerable variety in regard to the period of its first occurrence, and the symptoms by which it is succeeded. There are many persons in whom the first attack of htcmoptysis precedes, even for years, the primary symptoms of unequivo- cal phthisis. There are others in whom the iirst attack of haemoptysis is imincul- atclij followed by all the signs which announce vhe presence of tubercles in the lungs. Man}', again, do not spit blood until the tubercles have acquired a considerable degree of development, and the phthisical symptoms have been for some time clearly marked ; and occasionally, in these cases, the first hemorrhage proves fatal. Lastly, it is far from being an uncommon thing to see pulmonary consumption run its whole course, and terminate in death, without having been attended with any spitting of blood. Andral gives the following statement as the result of his own observation, in re- gard to the relative frequency of these several modes of connection between haemo- ptysis and consumption. Of the persons whom he had known to die of that disease, one in six never spat blood at all. Three in six (or one half of the whole number) did not spit blood until the existence of tubercles in the lungs was already made certain by unequi- vocal symptoms. In the remaining two-sixths the haemoptysis preceded the other symptoms of tubercular disease, and seemed to mark the period of its com- mence-menl. By this comparative statement you will see how very frequently hosmoptysis occurs as one of the symptoms connected with tubercular phthisis. Under this physician's observation it happened in live cases out of six. In the experience, however, of M. Louis, the proportion, though very large, is not quite so great as Andral found it. Among eighty-seven instances of consumption, there were fifty- seven, or four in every six, in which hcemoplysis had been present. It has, however, been made a question, whether the spitting of blood which thus occurs in connection with tubercular phthisis, is always to be considered as indica- tive of the existence already of tubercles in the lungs ; or whether it may not some- times precede, and give occasion to, their formation in those organs. This question has evidently been suggested by those cases (constituting, according to Andral, one third of all that happen) in which the ordinary signs of phthisis begin to manifest their»seives immediately upon the occurrence of the first haemoptysis, or within a 612 PULMONARY HE3I0RRHAGE. short time afterwards. Morton, who has noticed this kind of pulmonary hemorrhajje, includes among his species of phthisis, the " phthisis ab hcemoptoe ;" and Cullen held that spilling of blood was oflen the cause of pulmonary consumption. It is a very important question, and I shall revert to it again hereafter. Next to tubercular disorganization of the lungs, the most frequent source of pul- monary hemorrhage is to be found in the organic disease of the heart. It has been stated by Chomel, Bouiilaud, and others, both in this country and abroad, that the disease in these cases is most commonly situated in the I'ight chambers of the heart. But certainly this is a mistake. The error has arisen from arguing upon erroneous analogies, instead of attending to matters of fact. However, the statement is just as httle supported by reason as it is by the result of general experience. The only alteration in the right cavities of the heart which we could suppose likely, a priori, to cause pulmonary congestion, and thereby haemoptysis, would be increased strength and thickness of their muscular parietes : hypertrophy ; a morbid condition which is comparativily rare on that side of the heart, and which, perhaps, would not suffice for the production of haemoptysis, even if it did oftener exist. The direct effect, on the other hand, of any obstacle to the free passage of the blood in the right cham- bers of the heart, would be to gorge the liver, and the system of the vena portse ; and to prevent the lungs from receiving their due proportion of blood. But any material obstruction existing in the left auricle or ventricle will impede the return of blood from the lungs, lead to its accumulation in those organs, give rise to me- chanical congestion, and so dispose strongly to pulmonary hemorrhage. And, in point of fact, we find that haemoptysis is very frequently the result of disease in the left side of the heart ; and this leads me to speak here of one very remarkable morbid condition of the lungs, which is often directly connected both with pulmonary he- morrhage and with cardiac disease ; though it is not always, or necessarily, associated with either. The morbid state to which I allude is far from being infrequent ; yet it had been scarcely noticed by or known to pathologists, until Laennec described it under the title of pulmonary apoplexy. It appears under two forms. In the one form we find an uncertain number of hard knobs, or compact masses, situated here and there in the substance of the lungs, chiefly in their lower lobes, and towards their posterior surface. Their size varies from that of a marble to that of a hen's egg. When cut through they are seen to be very exactly circumscribed, the cut surface being more or less circular, of a uniform and very dark colour throughout, and exhibiting a strong contrast with the surrounding tissue. Careful examination shows that these masses are composed of blood that has coagulated in the pulmonary vesicles. Occa- sionally the pulmonary substance seems broken down, or torn, by the extravasated blood ; and in these cases, perhaps, the resemblance between the injury done to the lung, and that which is inflicted on the substance of the brain in cerebral hemorrhage, is tolerably close. Generally, however, there is no such laceration of the pulmonary tissues ; but one, or more, of the lobules of the lungs are gorged and crammed with blood, which has been poured out from the surface of the mucous membrane. These lobules, it is weU known, have no direct communication with each other ; but are isolated (except where they severally open into the bronchial tubes from which they spring) by a distinct investment of areolar tissue ; and it is to this peculiarity in their structure and disposition, that the exact circumscription of the dark-red indu- rated masses is to be attributed. In the other form of pulmonary apoplexy, there are fewer of these solid spots; perhaps one only, large, diffused, occupying sometimes nearly the whole of one lobe, its limits obscurely defined, and its colour gradually deepening to the centre, which is obviously formed by little else than a black clot of blood. Now the principal symptom attendingthe formation of these masses is hasmoptysis; and the principal, though not the only cause is disease of the heart. The hemor rhage is often severe and copious in the first, or circumscribed form : sometimes shght and scanty, but commonly slow, oozing, and persistent, in the second or uncir- oumscribed form. The heart disease is in its left chambers, and very often consists restricted to the most meagre diet; and be forbidden to exert himself, or to speak more than is absolutely necessary. His bowt-ls should be freeljf^ purged, in the first instance, and then kept lax and open, both with the view of deriving (as it is ".alied) from the thorax, and of preventing costiveness and straining. And, in con- junction with these measures, he should lose blood from the arm. The amount and il-e repetition of the'bleedmg must be determined by the circumstances of the case PULMONARY HEMORRHAGE. ' 617 {. e., by the cessation or continuance of the hemorrhage, and especially by the con- dition of the pulse. It would be idle to attempt to lay down precise rules on this matter. We do not bleed, however, so resolutely and perseveringly in haemoptysis as we are often obliged to do in acute inflammation. A prejudice has been taken (such, at least, I think it) against local blood-kfling in pulmonary hemorrhage. Inasmuch as leeches applied to the groins in amenorrhosa appear sometimes to restore the catamenia, so they have been thought hkely, when appUed over the surface of the chest, to attract the blood somehow to that part of the body, and even to cause hemorrhage when none before existed. Now I have so many times taken blood from some part or other of the exterior of the thorax by leeches, or cupping-glasses, without observing any such effect, of causing hemoptysis, or of increasing it while already present, that I cannot help considering the objection rather a fanciful one. When the fever or congestion are abated ; or when there has been no constitu- tional disturbance, and the hemorrhage has shown a passive character from the beginning, and when a continuance of it, so far from being curative in its nature, is hkely to be injurious ; then we are to employ those remedies which have been found efficacious in restraining and suppressing hemorrhages. Now of the substances which are held to possess more or less of a specific virtue, when taken internally, in arresting the efflux of blood, the sugar of lead, the phimbi acetas, enjoys in this country the highest reputation. And it certainly is a very serviceable remedy. Dr. Paris speaks of it as one of the most valuable resources of physic : and says that in respect to its power over internal hemorrhage there is nothing simile aiit secundum. He states also that its use is equally safe and manageable. There is, in fact, no doubt of its efficacy : but most other writers use very cautious language in recommending its employment. Physicians have been deterred from giving it by the fear of its poisonous qualities ; by the dread of pro- ducing the disease called coUca pictonum. Cullen observes, that the preparations of lead are certainly powerful in controlling hemorrhage, but that they are otherwise of a character so pernicious as to forbid their use except in cases of the utmost dan- ger. Of late years this drug has usually been administered in small doses, and guarded by opium ; and it is to this combination that Dr. Paris refers when he de- clares it to be a safe and manageable remedy. More recently, however, a statement has be«n made by Dr. A. T. Thomson, which must be considered of much impor- tance if further experience shall show it to be well founded. He was led, it seems, by some accidental circumstance, to suspect that lead acted as a poison upon the animal body, only in the shape of its carbonate. And the result of a series of expe- riments upon brutes satisfied him of the correctness of this notion. He holds, that when the acetate of lead produces the well-known symptoms of the painter's colic, it does so in consequence of its being somehow converted, after its reception into the body, into the carbonate ; that the conversion may be obviated by a very simple ex- pedient; and that the remedy may then be given with perfect safety in large and efficient doses. The expedient is merely that of administering the lead in draughts containing some dilute acetic acid, which prevents the decomposition of the acetate by any carbonic acid that happens to be present in the intestinal canal. In this way he tells me he has given as much as fifteen grains daily for ton days together, with- out any inconvenience, and with most excellent effect upon the hemorrhage. I have often exhibited lead in this manner; and I have never known it to give rise to any unpleasant consequences. At any rate this method of administering it deserves further and careful inquiry. [We liave also administered acetate of lead very extensively in cases of hremoptysis, and in tolerably large doses, continued, at short intervals, for one or two days, and have neve* known any injurious or even unpleasant effects to be produced by it. As a means of con- trolling the hemorrhage from the lungs we know of no remedy so certain in its effectb. In the disease under consideration, we have very generally combined a small portion of ipeca- cuanha with the acetate of lead. — C] In slight cases of hfemoptysis, the mineral acids, with or without alum, are oftoi insufficient ; or, if there be feverishness, the saline draught with nitre and digitalis. 3b2 618 PULMONARY EMPHYSEMA. Of the numberless r/iher drugs which have been vaunted as specific in hemorrhage I have very little personal experience ; at least in pulmonary hemorrhage. In cer- tain other ibrms or' internal bleeding there are some of them that are worth trying. But in haemoptysis there are none I can venture to recommend out such as I have now mentioned.' You may sometimes be urged to give a celebrated quack medicine — JRuspi)u''s styptic, which has obtained a high repute, and sells at a high price. This nostrum seems for a long while to have baffled analysis. The late Dr. Wol- laston told Dr. Maton that it contained no metaUic substance ; Dr. Thomson has .since announced that it mainly consists of a solution of gallic acid in alcohol diluted with rose-water. But I believe that all the remedial agents which contain gallic acid are more effectual in another form of internal hemorrhage, to be considered hereafter. Of mercury, as a remedy for pulmonary hemorrhage, I have already mentioned both my own insufficient experience, and the very favourable report of some excel- lent judges who have much employed it. • LECTURE LV. Pulmonary Emphysema ; vesicular and interlobular. Jinatomical characters of vesicidar emphysema ; physical signs ; general symptoms ; causes; treatment. Interlobular emphysema : its o.natomical characters, symptoms, cause, and cure. (Edema of the lungs. Phthisis Pulmonalis. T HAVE yet one or two morbid conditions of the lungs to consider and to describe, before I go to that which is the most common and most extensively fatal of all its morbid cond'tions — tubercular phthisis. There is a slate of the lung, or rather there are two or three different states, to which Laennec has applied the name emphysema. A very injudicious name it was for him so to impose. We are infinitely'- indebted to Laennec for the entirely new light which his able researches have thrown upon the morbid anatomy and tl^ pa- thology of the lungs : but we have to regret that he should have employed, in several instances, a vicious nomenclature. Emphysema is a term that had long been fa- miliar among medical men in a certain sense. It was used to express the indation of the areolar tissue of the body with air; and surgeons still make much of it as an indication, in cases of fractured rib, that tlie bone has grazed the pleura, and allowed air to pass into the areolar tissue, and to diffuse itself over the chest and neck, and other parts ; so that these parts, when pressed, convey a curious sense of crackling to the finder. But emphysema of the lung, as that term is employed by -Laennec, includes dilatation of the air-cells of the lungs, and rupture of the partitions which separate them from each other; and also the infiltration of air into the interlobular areolar tissue, or into the subpleural areolar tissue. In strictness of language these last conditions alone should have been called emphysema of the lung. Laennec has distinguished the two species in this way. To the dilatation of the air-cells, with or without a breach of their partitions, he gives the name of vesicular emphysema: "the vesicular (I quote the words of Dr. Forbes' translation), or pulmonary, properly so called." Now in truth this is emphysema improperly so called. To the infiltra- tion of the areolar tissue in or around the lung with air, i. e., to emphysema of the ungin the old sense of that word, he applies the title of interlobular emphysema. We cannot change these denominations now. They have fastened themselves upon medical language. But it is very fit that you should be aware of their inconsistency with the ancient signification of the same Avord, and have clear notions of what, in Laenncc's nomenclatun-, they are intended to express. The change called vesicular emphysema was not vnknoivn, as a mere morbid :-ondition. before the time of Laennec ; but it had been noticed by vriry few writers, PULMONARY EMPHYSEMA. 619 and practically, it was lohoUy unattended to. Yet it is extremely common ; much more so than you would suppose : and when rightly studied it is of great inieres;:. too, in relation to the general pathology of the chest. But it is still so new, aucl may so readily escape observation, both in the dead and in the living body, if it be not looked for, thai I shall devote a somewhat more minute attention to it, on those accounts. Laennec was undoubtedly the first to put emphysema pulmonum upon the list of definite and cognizable diseases; to point out its frequency; and to collect its symptoms. But when he affirms that, before his time, the pulmonary change which constitutes the disorder was misunderstood by nearly all those persons who had no- ticed it, he scarcely does them justice. "All of them (says he) seem to have thought that the derangement in question consisted in the infiUration of the cellular substance of the lungs with air." He inconsistently adds, " Ruysch and Valsalva are the only authors, as far as I know, who have observed in individual cases, the dilatation of the cells ;" and with still greater inconsistency he proceeds to quote, from Morgagni, the following passage, in which this dilatation is very clearly described : " Sinistri pulmonis lobus superior, qua claviculam spectabat, vesicidas ex quibus constat minim in modum auctas habebat ; ut nonnullre avellanse magnitudinem sequarent; easterns multo minores erant." You will find the same change noted by Dr. Baillie, in his Morbid Anatomy : and by earher writers than he. Vesicular emphysema, then (to adopt Laennec's phraseology), consists in dilata- tion of the air-cells. The enlarged cells become misshapen also in many cases. They vary in magnitude from that of a millet-seed to that of a swan-shot: nay, the cavities may even reach the size of a nutmeg, or of a hen's eg^: but when they are as big as this — and a fortiori if they, are still bigger — the distension and vacuity are, no doubt, the result of the union of several air-cells, broken into one, by the stretch- ing or destruction of the partitions that naturally divide and isolate them. You may see the dilated vesicles very plainly through the pleura, if you carefully examine the surface of the lung. They appear to the naked eye as the healthy vesicles appear when seen through a magnifying-glass. Sometimes all the vesicles belonging to one lobule are enlarged, while those of the adjoining lobules are of the natural size. In that case, the emphysematous lobule is conspicuous both by its peculiar colour, and by its protrusion. The surface of the lung is often rendered quite irregular and ^ unevei* by projections of this kind. Sometimes one large globular prominence is seen, like a bubble on the water, or like a little bladder springing from a footstalk; but if you examine it closely, you will generally find that the footstalk is merely a constriction at the surface, and that there is as large a cavity beyond it, in the lutig, as there is without. These bullce you cannot slip about by pressure from one part of the pleura to another. The unevenness produced by vesicular emphysema upon the outside of the lung IS manifest enough, when looked for; but the same condition of the air-cells exists also within, and 7/?ere it is wo/ so readily perceptible. The fluids which the lung "ontains obscure all distinction of parts when the organ is cut. The best way of getting a fair view of the dilated cells as they appear in the substance of the lung, is to inflate the emphysematous portion, by blowing air in at the bronchial trunk which belongs to it, and then tying that trunk to prevent the escape of the air. The inflated lung should be hung up in a current of wind, so that it may quickly dry, and, during the drying process, it should, from time to time, be reinflaled ; for else the included air gets out somehow, and the piece of lung shrinks and shrivels up. When it is quite dry, if a section of it be made with a thin sharp knife, the altered state of the air-cells, some of which are more and some le^s dilated, will be very conspicuous. No part of the lung is exempt from liability to these morbid changes ; but gene rally they are limited to certain portions of the organ ; and they are much more common and more pronounced at its loose anterior borders, and near its summit, than anywhere else. Both lungs appear to be alike obnoxious to the disease, which seldom affects the one without affecting, in a greater or less degree, the other also. The parts that are emphysematous are usually paler than the rest, and sometim»-a 620 PULMOxVARY EMPHYSEMA. they are quite white. In extreme cases, the surface of the lung presents a sort of piebald appearance ; large patches of it looking as if they had been bleached. Thii pale colour is oftenest seen towards the free edges of the lung. Sometimes those edges are rounded and thick; sometimes thinner, and folded back; while sometimes the margin is blown out, as it were, into an irregular fringe ; some of the inflated portions remaining connected with the lung by slender pedicles, and thus forming appendices to it of a light yellow colour. I presume that what was thought and called a fringe of fat, garnishing the edges of the lung, in the body of King George IV., was of this kind. At least I have never seen nor heard of any other example of fat deposited in those organs. If you hold the emphysematous border between your eye and the light, you perceive that it is translucent : if you prick it with a pin, the pufty part surrounding the puncture collapses ; which shows that the dilated vesicles communicate together. An emphysematous lung is not only paler, but drier also, than ordinary ; and for the same reason. It possesses fewer capillary blood-vessels, less blood, and conse- quently less moisture. It is dry and Hght, and floats high upon water, like a bladder filled with air. If )'0U take such a lung out of the body, having its surface embossed with irre- gular groups of enlarged air-cells — and if you inflate that lung, by blowing into the bronchi — the emphysematous portions will seem to sink in, and flatten, and return to the ordinary level as the lung becomes distended. In point of fact, however, these portions remain permanently dilated, and the other parts of the surface rise, as the air enters them, until the whole is smooth and even. Air is shut up in the emphy- sematous portions, which do not subside, as the adjoining portions do, when left to the agency of their proper elasticity. Hence you will see how it is that, when the vesicular emphysema is extensive, so as to occupy nearly the whole of the lung, the lung becomes apparently too big for the case in which it is contained. Not only does it not collapse when the sternum is raised, and the pressure of the atmosphere is admitted to its external surface, but it even protrudes, the moment that the open ing is made. When you handle such a lung, it gives a very difl^erent sensation tr the fingers from that produced by pressing a healthy lung. It feels like a down pillow. It crepitates less ; the air is less easily forced out of it, and escapes slowly, with a slight hissing noise. Such being the state of the lung, as discovered after death, you will naturally be inquisitive to know by what signs the existence of a condition so remarkable is re- vealed during life. First, then, when the emphysematous distension is considerable in amount, and extensive, it produces alterations in the shape and movements of the chest. The lung, having lost much of its elasticity, does not subside as a healthy lung does. The act of expiration is arrested and incomplete. Consequendy, the thorax remains nearly in that position which it assumes after inspiring. It is promi- nent and rounder on the diseased side, or on both sides, if both lungs be affected; but it is apt to be irregularly prominent, and unsymmetrical ; to bulge here and there in correspondence with the bulging of the lung within. The ribs are less oblique than they should be, and the chest is, therefore, more cylindrical. The cla- vicles are ill-defined in such persons. They are so, as you know, in fat persons ; wherefore this aid to the diagnosis is of most value in those who are spare. In them it is a valuable sign, for it is simple and obvious. The distended lung presses up- wards, as well as in other directions, and tends to efface the depressions which natu- rally exist both above and below the collar-bone. This symptom is the more to be depended on if it presents itself on one side only. The manner of breathing is instructive also. The rihp, never receding within their proper limits after w.pira- tion, can move but little during j^ispiration ; and the breathing is in a great measure abdominal. Now, all these signs are physical signs. But what, in the second place, are the anscidiutory physical signs ? Why, in the emphysematous regions, which com- itionly are also the most bulging, percussion yields an unnaturally clear and resonant »nund, while auscultation discovers a very indistinct vesicular murmur. The two modes check and explain each the information afforded by the other. Percussion PULMONARY EMPHYSEMA. 621 ascertains that there is air beneath the part struck : auscultation ascertains that there is little or no air in motion beneath that part. It follows, therefore, that there is stagnant air; air shut up in the enlarged air-cells, or air interposed between the ear and the lung in the cavity of the pleura: air at rest, in fact. I say the respiratory murmur is very feeble. This partly depends upon the limited play of the ribs, partly and chiefly upon the circumstance that the air is imprisoned in the dilated cells. When none enters or leaves them during respiration, no vesicular breathing can be heard ; and then we must call in the aid of other considerations to determine whe- ther the air be contained in the cavity of the pleura, or in the emphysematous lung. Pure pneumothorax is extremely rare. Pneumothorax with liquid effusion is easily recognised by its proper signs. If these be absent, we conclude that the stagnant air occupies the lung, and not the pleura ; and this conclusion is strength- ened if the unduly resonant part be prominent also. Almost all writers on this subject follow Laennec in stating that dry crepitation may be heard in the emphy- sematous parts. It may be so; but, if so, I cannot distinguish it. I mean that I know no crepitation but that which is moist, and which proceeds from the formation and rupture of bubbles, as air passes through liquids in the bronchial tubes. But other people believe that they can hear a dry crackling, such as may be produced by inflating a portion of dry areolar tissue out of the body, or a dry bladder. You will try this by your own experience. I do not deny that such a sound exists : I only say that if it does exist, I cannot tell when I hear it, and when I hear largo moist crepitation. But I more than suspect that no such sound is given out by an emphysematous lung, and that the sound heard is really large crepitation in tho neio-hbourhood of the dilated cells ; for emphysema is very often accompanied b}' catarrh ; and the sounds in question, authors agree, are not permanently audible. So much for the physical signs of emphysema pulmonum. The general signs, when the change is extensive, are an habitual shortness of breath, with occasional paroxysms of extreme dyspnoea; cough which, however, is far from being a constant symptom : palpitation in most instances as the disease advances, and more or less oedema of the ankles. Usually the appetite remains unimpaired, and the patient does not lose flesh. The disorder is unattended with fever ; and is essen- tially chronic. The paroxysms of urgent dyspnoea are frequently concurrent with, and apparently excited by attacks of smart bronchial catarrh ; but they sometimes arise without any obvious cause. They are apt to come on suddenly, in the night, and the patient is obliged immediately to sit up, and even to open the doors and windows of his bed- room, that he may breathe more freely. In one word, he undergoes a paroxysm of asthma. These attacks become more frequent and more severe as the patient and the disorder grow older. They are attended with much wheezing ; and in the lower posterior part of the lungs crepitation is generally audible. At first the palpitation of the heart, and oedema of the feet, abate and cease as the violent dyspnoea goes off: but at length these symptoms become permanent. We see a reason, in the physical condition of the thorax, why the breathing should be more oppressed, and why the paroxysms of orthopnoea should occur more fre- quently in the night. Whenever the respiration is principally abdominal it is apt to be embarrassed by the recumbent posture, which throws a j)art of the weight of the viscera of the belly upon the diaphragm. The horizontal position is always ill borne by these patients ; and, for similar reasons, flatulence or fulness of the stomach, how- ever caused, distresses them. Cough, as I observed before, is an occasional, but by no means an essential accom- paniment of vesicular emphysema: the expectoration, where there is any, is thin- nish, like gum-water, and full of foam. Louis, who has analyzed, with his accustomed care and exactness, a considerable number of cases of emphysema, states that the disease is seldom complicated with tubercles in the lungs. We may suspect that complication, if haemoptysis, or ema ciation, occur ; which are otherwise rare symptoms. To what cause can we ascribe this dilatation of the pulmonary vesicles, whereby the proper function of the lung, in the part affected, is impaired, or annulled ' C22 PULMONARY EMPHYSEMA. Mainly, I think, in the outset at least, to the imprisonment of air within them, undei circumstances of disease. You may often trace back ihe shortness of breath to the period of inilmcy. Patients will tell you that from their earliest recollection they have been easily put out of breath: that they never were able to engage heartily, and to the same degree with their companions, in the active sports of childhood, "it is easily to conceive that under chronic inflammation, or other disease of the mucous membrane, air may enter the vesicles more readily than it can escape from them again. The act of inspiration is voluntaiy and strong ; the tubes are made patent by it, and air rushes in and finds its way to their extremities. But the act of expi- ration is passive, and comparatively feeble. Slight tumefaction of the membrane, or a little plug of viscid mucus, may so close up a small bronchial ramification, that the air cannot pass through it in expiration : and more and more air may thus be accumulated and incarcerated in certain air-cells, which yield to its distending force, and losing their elasticity become permanently large. And this process will be acce- lerated if the original disorder which gives rise to it is attended with violent cough ; wiih forcible efforts, that is, of expiration. Etnphj'sema is always (in my opinion) a consequence of pre-existing disease or disorder of the chest. There are some who believe it to be occasionally a congenital and idiopathic affection. They build this notion upon the fact that the complaint is traceable, from one generation to another, in certain families; and as it often is present at an early age in children born of emphysematous parents, they conclude that the emphysema, in such cases, is a vice of the original bodily formation. I am not convinced by this mode of reasoning. The facts upon which it rests show simply that the disorder runs much in families, and that the tendency to it is sometimes inherited. The lax or weak fabric, which favoured the production of the disease in the parent, is repealed in the offspring, and imparts the same predisposition. Children are very liable to severe coughs, such as are calculated to strain and overstretch the cells of their delicate lungs. What can be more likely to do so than the reiterated and violent paroxysms of coughing which occur in pertussis ? After the cough has ceased, however, the shortness of breath which it leaves behind is easily overlooked, until with the increase of the emphysema, it forces itself into notice. For when once the morbid process has begun it tends, slowly often, but surely, to its own augmentation. As the cells dilate, the capillary blood-vessels distributed over their parietes are gradually compressed and emptied : and many of them are, at length, completely obliterated. Hence, not only an ex- sanguine condition of the pulmonary tissue, but atrophy also of the intervesicular partitions, which become first thin, then tattered and imperfect. In dried specimens of emphysema you see wexy plainly the remains of the former walls of separation between the vesicles. It is this interference with the nutrition of the lung which causes vesicular em- physema to be always a progressive disease. We see why it is that, speaking gene- rally, the extent of the morbid change is proportioned to the age of the patient : why paroxysms of severe d3'spncea at length supervene ; and become more and more frequent and trying. The function of the lung becomes year by year more limited ; until it can no longer bear, without a struggle of distress, that further en- croachment upon its office and capability which a slight catarrh, rapid movements of the body, a distended abdomen, or even the recumbent posture, may be sufficient to produce. Laennec attributes the dilatation of the air-cells, in the first instance, to what (with a curious infelicity of diction) he terms dry catarrh, which is characterized by its tendency to recur, and by the expectoration of small pieces of hard, pearly phlegm. But doubtless the disorder may be produced, and aggravated when produced, by any cause that impedes the free exit of the air from the lungs during expiration : by blowing on wind instruments of music, by pressure made on parts of the lung ; bj tumours therefore in the thorax, a large heart, aneurism of the thoracic aorta, de- formity of the chest from crookedness of the spine, tight lacing, and even the pre- sence of tubercles ; although lungs that are full of tubercles are not, in general, much affected by emphj-sema. This last fact has led to the absurd project of attempting «o present phthisis by producing emphysema. It is the same disease which exists PULMONARY EMPHYSEMA. 623 in broken-Avinded horses ; and Sir John Floyer, in his Treatise of the Jlsthma, pub- lished in 1()!)8, sets forth, in the quaint language of that olden time, both the altera- tion which Laennec thought he had been the first to describe, and the mode in which it takes place. His observation respecting the lungs of horses are equally applica- ble — and he no doubt intended to apply them — to the hnman lungs. After speaking of "the broken wind, from the rupture or dilatation of the bladders of the lungs, by which the air is too much retained in the bladders or their interstices, and thereby produces a permanent flatulent tumour" — and stating that " these horses «'heeze much after filling their stomach, by water or food, because that keeps up the dia- phragm" — he goes on thus. "As it happens in external flatulent tumours, they at first go off and return, but at last fix in permanent flatulent tumours ; so it is in the flatulent asthma, the frequent nervous inflations induced at last a constant windy tumour or inflation ; and it ought to be considered how far holding the breath in hysteric fits, or the violent coughing in long catarrhs, or the great distension of the lungs by an inflammation in the peripneumonia, may strain the bladders and their muscular fibres, and thereby produce the same rupture or dilatation or hernia as hap- pens in the broken-winded. This must be observed by the help of the microscope; and if the air blown into any lobe will not be expelled thence by the natural lone or muscle of the bladders, that the lobe may again subside of itself, 'tis certain some injury is done to the ventiducts ; the bladders are either broken, and admit the air into the membranous interstices, or else they are over-distended like a hernia in the peritoneum ; and this will produce an inflation of the whole substance of the lungs, and that a continual compression of the air and blood-vessels, which will produce a constant asthma." Really this is a capital piece of pathology for the seventeenth century. It is, at first sight, a matter of surprise that vesicular emphysema of the lung, and dilatation of the bronchi, do not more often go together. Sometimes, indeed, the smaller branches of the air-tubes do partake of the dilatation of the cells : but this is not commonly the case. Still the mechanism of both diseases appears to be, in the first instance, the same. The detention of mucus in them leads to dilatation of the bronchial tubes: the incarceration of air in them to enlargement of the pulmonary vesiiles. Vesicular emphysema may arise then, and receive increase from, various disor- dered conditions that precede or accompany it, and of which it is the effect. On the other hand, it is often itself the cause of subsequent disease, not merely in the lung, but in other parts ; and above all, of disease in the right chambers of the heart. The smaller blood-vessels, as I have shown you, are gradually effaced as the dilata- tion of the air-cells proceeds: the emphysematous lung is evidently in a state of comparative anaemia, and incapable of admitting all the blood which is due to it from the pulmonary artery. In other words, the right side of the heart does not empty itself with its accustomed ease. Hence increased muscular contractions of the right ventricle: and a yielding of its walls to the augmenting pressure of the contained blood. And this embarrassment of the circulation in the right side of the heart is aggravated at those periods when the paroxysms of urgent dyspnoea occur. Now nothing is a more sure cause of anasarca than a permanent dilatation of the right cavities of the heart: and this influence of the emphysematous lung upon that organ is clearly seen in the palpitations to which such patients are liable, and in tho oedema of the feet and anlcles which often becomes manifest at the same time. I must beg you to bear in mind that emphysema of the lung is one, and a very common, cause of a.sthmn. The asthma so arising is less perilous than that which l)roceeds from certain other organic changes, to be described hereafter. Vesicular emphysema, indeed, in its simple uncomplicated form, is seldom attended with much danger. When it proves fatal, it is so in consequence of the superaddition of some other disease. Laennec states very truly, that of all the varieties of asthma, this is the one which affords the patient the best hope of a long life. The condition that I have been describing, when once it has fairly been establish- ed, can scarcely admit of a cure. We shall do our patients good, not by any treatment addressed to the existing emphysema itself, but by guarding them ao-ainst those f-jr- C24 INTERLOBULAR EMPHYSEMA. cumstances which are likely to aggravate it ; and by miligatinor or removing those other disorders with which the emphysema is apt to be combined. Whatever is calculated to put the patient out of breath is bad for him. It is observed that they who, having emphysema, are obnoxious also to catarrhs, during which the dyspnoea is singularly increased, are much more free from such attacks in the warm weather of summer, than in the winter. This explains the beneficial influence of a judicious change of climate upon such persons, and it points to the necessity of warm clothing m the colder seasons for those who are obliged to remain in this country. The feet especially should be kept dr}'' and warm ; and the liability to catarrh may be some- times diminished by the use of the cold shower-bath, in the way I formerly recom- mended. During the fits of extreme dyspncea, you may hear the expiratory wheeze remarkably loud and protracted ; and if, withal, you hear any small crepitation, in- dicative of pneumonic inflammation, you will do well to cup the patient between his shoulders. This will always give relief to loaded lungs, whether there be inflam- mation present or not. But the great assuager of the dyspncea in this disorder is opium; and especially opium combined with aether. Haifa drachm of Hofl^man's anodyne, with a third of a grain of the acetate or muriate of morphia, in camphor julep, will operate like a charm often, in quieting the whole system, and removing the difficulty of breathing. This circumstance would lead us to suppose that the access depended, in part at least, upon a spasmodic state of some of the muscles concerned in respiration. To this question I shall revert when I speak of asthma as a separate disease. At any rate you will find that some such formula as I have just mentioned will stand you in good slead when you have to deal with asthma engrafted on emphysema. And I may add, that this is a case of exception to a rule I formerly laid down. You need not be deterred from giving a full dose of opium by the blueness, which is temporary, of the patient's lips and countenance. The interlobular and suh-pleural emphysema of the lungs is a species of trut emphysema, the air being contained in the meshes of the common areolar tissue. When it appeai-s on the surface of the lung, it may be distinguished from the bladder- like prominences which sometimes form there by the dilatation of the air-cells, in this waj^ : the bullae which are situated in the areolar tissue connecting the pleura with the lung, may be made to move hither and thither under pressure; whereaa those which result from the protrusion of an enlarged cell or cells cannot be madfe thus to change their place. This sub-pleural efTusion of air is sometimes enormous. I have seen it as large as a hen's cg2,' Bouillaud mentions a case in which the bladder or pouch was equal to the size of a stomach of ordinary dimensions. It proceeds, I presume, from the rupture of a superficial air-vesicle. Sometimes, as I mentioned before, the pleura also gives way, and air is poured into the cavity of the thorax. More commonly the membrane remains entire, and then these large bubbles of air may be seen upon the surface of the lung. Of interlobular emphysema I can give you but little account except from the ob- servations of others. I have never seen more than one well-marked example of it. The lobules of the lungs cohere together by means of areolar tissue, which is dense and close in the natural state, but which admits of considerable expansion when it is inflated with air. If the emphysema be slight in degree, the lozenge-shaped spaces visible on the surface of the lung are defined by little bubbles of air, that look like beads strung upon a thread But in extreme cases the lobules are fairly blown asunder bv the air ; the partitions between them increase in width, and are said to be sometimes as much as an inch broad. They are broadest towards the surface of the lung, and narrower towards its roots ; and exhibit somewhat of the arrangement seen m the section of an orange, the septa radiating and diverging from a centre. If the areolar tissue could be taken out, there would be left cracks and clefts in the lung. When the interlobular emphysema penetrates to the roots of the lung, the air readily passes into the areolar tissue of the mediastinum, and thence to the sub- cutaneous tissue of the neck and chest — and then we have the genuine emphysema ui authors who wrote prior to Laennec. There is this material difference between vesicular and interlobular emphysema; INTERLOBULAR EMPHYSEMA. 625 that the one is slow and gradual in its formation, the other sudden. The permanent dilatation of the air-vesicles is the work of time. They yield, and lose their elasti- city, and break into one another, only by degrees. The interlobular effusion of air may be effected in a few minutes or seconds. It is caused by violent straining effbris ; such as those made by a woman in childbirth, or by any one who exerts himself to lift a weight which is too much for hiin. A deep inspiration is taken ; then the glottis is voluntarily closed, and a strong expiratory effort is made. Some rupture must take place and form a communication between the air-vesicles and the areolar tissue ; but such rupture has never been traced, nor is it hkely that it should be. They say that this form of emphysema is revealed also by large dry crepitation ; why it should, is not evident. 1 can only say of that sound, as I said before : it may exist, and it may be distinguishable from large moist crepitation, but my ear is not delicate enough to distinguish it : and to speak the truth, I doubt exceedingly whether any such sound really occurs at any time. But do not let my doubts infect you : try for yourselves ; and till you have had opportunities of investigating this point, consider it as adhuc sub judice. Again, they say that the noise of friction denotes the existence of interlobular and subpleural emphysema. On this point I can give you no information of my own knowledge. That you may sometimes hear the costal pleura rub against the pul- monary during inspiration and expiration, I know ; I have often heard that sound (as I mentioned to you before) when the membrane has been roughened by pleurisy; but that a soft, smooth, moist lung, though embossed by emphysema, will give rise to a rubbing sound, I do 7iot know. It may be so, but it has never occurred to me to hear it. We may be more certain that interlobular emphysema has arisen when, im- mediately after some violent straining effort, considerable dyspncea and oppression ensue, and presently the subcutaneous areolar tissue becomes emphysematous. You will understand how rapidly the inflation of the areolar tissue may take place if you ever saw a butcher blow up that of a calf which he is in the act of skinning. As interlobular emphysema differs from vesicular emphysema in its seat, and in the suddenness of its formation, and in some sort also in its cause, so does it differ in its curability. Under favourable circumstances it will soon cure itself — the air will be reabsorbed, and the dyspnoea cease. I do not know that we can do much by art to accelerate that process. If the dyspnoea be extreme, it will be relieved by blood- letting ; and if the air makes its appearance, and can be felt, crackling, beneath the skin, you may let it out by making a few punctures with a lancet, and the deeper- seated emphysema will be lessened as the air escapes. I believe that this inter- lobular emphysema is more common in infancy than in any other part of life ; on account, I suppose, of the greater dehcacy and tenderness of all the tissues at that age. The interstitial areolar tissue of the lungs, as well as the air-cells, is liable to be filled not only with air, but with serous fluid ; and this constitutes adenia of the lungs ; a condition which is by no means uncommon, and one of which you ought therefore to be aware ; but it need not long occupy our attention at present. When a lung, or a portion of a lung, is anasarcous (and you will often find that the oedema is limited to the most depending part of those organs), it is generally of a pale gray or yellowish tint; is heavier than healthy lung, and less crepitant; and pits more on pressure — is doughy. And if the cedema is extensive, the lung does not collapse when the chest is laid open. When incisions are made into the lung in this state, a thin wati'ry fluid flows out, more or less spumous ; and if the lung be well squeezed, the vvhole of the liquid may be expressed; and then it will be obvious that the tex- ture of the organ is sound, but that it had previously contained less air than usual. in consequence of the presence of the watery fluid. " Tliis condition of the lung seldom takes place except as a part of general anasarca and we may discover its existence, first by noticing that there is dropsy of the areola/ 40 3c G2G PHTHISIS PULMONALIS. tissue in other parts ; secondly, that the patient has dyspncea ; and thirdl}', by hearing crepitation, produced by large bubbles, at the lowermost portions only of the lungs. Into those portions the liquid gravitates ; just as it sinks into the ankles when the patient sits up or walks about. There is still air in the osdeniatous portion ; so that percussion still gives a hollow sound : as hollow at least on the one side as on the other. With the air there is also liquid, which transudes, I suppose, from the areolar tissue, or is exhaled from the surface of the membrane : and the liquid is from time to time coughed up and expectorated. Sometimes, however, there is but little expecto- ration. What does come up is chiefly aqueous, witli occasionally a piece or two of mucus floating upon it; and it is somewhat foamy also. This CEdema or anasarca of the lung is symptomatic of other disease ; generally of disease of the heart or great blood-vessels : and it is capable of no other rational treatment than such as is suited to the original disorder : and therefore I have nothing further to say about it now. I proceed, in the next place, to that most prevalent and lamentable disease of the lungs, which is well known to everybody, under the titles of pulmonary consump- tion, and tubercular phthisis. And without pausing to make any general reflec- tions, respecting facts which must be familiar to you all — the fatal and almost hopeless character of the disease, and the havoc it produces among the young, the most gifted, and the most beautiful, of the human race — I shall commence by inquiring into the morbid anatomy of tubercular phthisis: which will naturally introduce us to the consideration of its symptoms, causes, treatment, and general history. Phthisis, you know, means a wasting away, or a consuming ; but of late years the term has been restricted to that species of wasting disease, which consists in the occupation of the lungs by tubercular matter, and the changes which that matter sujjh's and works. But it would be an error to suppose that the disease is restricted to the lungs in these cases. The lung disease would be sufficient at leng<.n to destroy hfe ; but its mortal tendency is aided and accelerated, in most instances, by disease of a similar character, situated in other organs. " The pulmonary consumption (as Dr. Latham justly observes) is no more than a fragment of a great constitutional malady." But that malady plays its part most conspicuously in the lungs. 1 shall notice its complications as I go on ; but I am desirous of cautioning you in the outset against supposing that tubercular phthisis is exclusively a pulmonary disease. Before I proceed to a more particular description of the changes that, in the pro- gress of consumption, are wrought in the lungs, I must briefly recall to your recol- lection certain points, relating to tubercular disease in general, which were brought before you in an earlier part of the course. The formation of tubercles is closely linked with the existence of the scrofulous diathesis. Tubercles themselves are com- posed of unorganized matter, deposited from the blood, of a yellowish colour, opaque, friable, and of about the firmness and consistence of cheese. This is what all pathologists agree in regarding as the true tubercular matter. It is most commonly deposited on the free surface of mucous membranes ; and not unfrequently amidst areolar tissue. You will remember that tubercles are not necessarily, as some have supposed, of a round shape. Their form depends upon the nature of the tissue in which the tubercular matter is deposited. Wherever it is laid down, it is liable to increase m quantity by the continual accretion of fresh matter of the same kind. Hence, when a speck of this peculiar matter is deposited in any soft uniform tissue — such as tiie brain, or the areolar membrane — there being no inequality of pressure from any quarter, it preserves a spherical or globular form as it grows larger. But taking the lung, with which we are at present chiefly concerned, the round form is •sometimes real, sometimes apparent only. It is real when the tubercular matter fills up, or fines, and therefore takes the shape of, the pulmonary vesicles. So it is when a number of these, contiguous to each other, coalesce by the increase of deposit and compose one large globular mass. And you may often catch the tubercles, if I may so say, in the process of forming these large rounded masses ; i. e., you may see liiem arranged in circular groups or clusters, tbj interstices between them beconting PHTHISIS PULMONALIS. 627 gradually smaller and smaller. But when, as is often the case, the tubercular matter is laid down in the smaller ramifications of the bronchi, it assumes a cylindrical shape. This you may ascertain by carefully following the branching of the air- tubes : but in the manner in which the lung is usually divided by the scalpel, you see merely sections of these cylinders; and then the round form is apparent c.nly. If the tubercular matter comes to fill one of these smaller air-tubes, and also all the vesicles to which that tube conducts, then the new substance, when fairly displayed, represents a branch, with a cauhflower termination ; hke a twig with a bunch of leaves at its extremity. You may see these appearances dehneated, from nature, in Dr. Carswell's admirable lithographic drawings. If this account of the formation of tubercles, as explained by Dr. Carswell, be the true one ; — of which [ entertain little doubt ; — it will follow, as a matter of necessity, that no alteration ccm take place in the tubercular matter, after it has once assumed the solid form, except through the agency of the parts around and in contact with it. No change can originate in the organic tubercle itself. Besides this true and undisputed species of tubercle, you will often find the lungs more or lt>ss thickly studded with a number of small granules, of firmer consistence, almost as hard as cartilage, semi-transparent, and of a bluish gray colour. Respect- ing the nature of these granules — which are sometimes called miliary tubercles, sometimes the granulations of Bayle, who first described them — many difl'erent opinions are entertained. Laennec considered them to represent the incipient stage of the opaque yellow substance ; and he calls them accordingly nascent tubercles. Andral believes that they are simply some of the pulmonary vesicles rendered solid and hard by chronic inflammation. Dr. Carswell explains their formation in this way. The membrane lining the air-passages secretes from the blood, not only the matter of tubercle, but its own proper fluid ; whence it sometimes happens that a dull j'ellowish point of tubercular matter becomes enclosed and set, as it were, in a small pallet of gray, tough, semi-transparent mucus. Whatever may be the true theory respecting these little bodies, it is certain that they acknowledge some intimate connection with the true cheesy tubercle. They both occur in the same persons, in the same lungs, in the same parts of the lung. One very seldom occurs without the other. They both belong essentially to the disease we are considering — pulmonary pthisis. Louis, a minute and faithful observer, states that the granules present, at a certain period of their development, a central opacity. Upon the whole, it seems probable, that Lacnnec's doctrine, in regard to the relation subsisting between the gray semi-transparent granule and the yellow opaque tubercle, was well founded. He was wrong, however, in some other points, especially in his statement that the softening of tubercles begins in their centres. Dr. Carswell has shown how the ap- pearance of a central softening arises, first, in the smaller tubercles; secondly, in the larger agglomerated tubercular masses. The morbid secretion is deposited, princi- pally, upon the mucous surface — upon the inner lining of the air-cells, and of the bronchial tubes communicating with them. Now it may so accumulate as to Jili those cavities ; and then, sections of them will represent the crude tubercles of Laennec. But it may only line the cavities : it may leave a central vacuity, con taining mucus or other secreted fluids ; and if the lung be cut across under these circumstances, the divided air-cells will look like rings of tubercular matter grouped together ; and so also will the divided bronchial tubes. We then have the appear- ance of tubercles, with central depressions, or soft central points ; and Laennec was deceived by those appearances. But the larger masses begin also, he says, to soften at the centre. True : we do find the process of softening going on at several points within them at the same time. The masses, you must bear in mind, are formed by the growing together of many smaller tubercles; and the areolar tissue, with the other tissues which originally separated these tubercles, still exists, though it ceases to be visible. At length, under the augmenting pressure, or some other influence, it suppurates; and in this way the tubercular mass is broken down. Now this is the very process by which the tubercles are at length, often, expelled from the body. They increase till the surrounding parLs take on inflammation, either from the increasing pressure, or from some accidental 628 PHTHISIS PULMONALIS. cause. The inflammation thus excite:>(l, occurring in scrofulous persons, has the scrofulous character. The thin pus which it throws out pervades and loosens the tubercular deposit; a process of ulceration goes on in the surrounding textures ; and, at last, the softened scrofulous matter is graduailj?- coughed up and expectorated. This explanation of the mode in which the tubercles are formed, and increase, and soften, and are removed, has been given to the Avorld within the last few years, by Dr. Carswell ; and it is much the most simple and probable of any that I have seen. It is moreover, perfectly consistent with the best ascertained facts concerning the progress of tubercular disease. You will find numberless theories broached by dif ferent authors on this subject, if you like to look for them ; but I do not think you will find any so satisfactory as Dr. Carswell's. And having recalled these things to your memor)" (for it is some time now since I mentioned them before) we may go on to the further consideration of the morbid anatomy and pathology of tubercular phthisis. It is a remarkable and very important fact, that tubercles, when they affect th& lungs, are not deposited at random, or indifferently in all parts of those organs. It is in the upper lobes, and in the upper and back parts of those lobes, that, in nineteen cases Out of twenty, and in more than that proportion, we meet with tubercles when they are few. It is in the same part that they are largest, and most numerous, when they are scattered throughout the whole lung. It is here, also, that they first ripen, and grow soft, and become ready for expulsion through the bronchi and trachea : consequently, it is here, that we have the most frequent, the most numerous, and the largest excavations in the lung — what are technically called vomiar. And the iiumber and magnitude of the tubercles and of the vomicas gradually diminish from ■ he summit of the lungs downwards. Now these are not merely curious facts: they have a most important bearing upon the diagnosis, in cases that might otherwise be doubtful. It is a rule which has but few exceptions — ^just enough to establish its claim to be a rule — that the favourite habitat of pulmonary tubercles is the upper part of the superior lobes of the lungs ; and I may remind you that the converse of this is true (though with more numerous exceptions) of common inflammation of the lungs. Pneumonia affects by preference the lower lobes; it does sometimes commence in the up])er, but that is comparatively rare. When it occupies the superior lobes it generally has arrived there by travelling upwards from the inferior. You Avill at once perceive the prac- tical advantage of knowing these points of contrast. It is a curious fact also — less practically useful, perhaps, than the former, but still a valuable fact — that the left lung is much more obnoxious to tubercular disease than the right. Modern observers have collected numerical statements showing that this really is so. Why it should be so, I know not. Thus Louis, whose volume is tho result of immense labour in observing, and is full of the most instructive matter, had met with seven cases in which tubercles were confined to a single lung: in tivo of the seven cases it was the right lung that was thus exclusively affected, in Jive it was the left. Of 08 instances in which the upper lobe was totally disorganized by the disease on one side, 28 were of the left, and only 10 of the right. Eight times he had known the pleura perforated by the extension of tubercular disease ; and seven times out of the eight the perforation happened on the left side of the chest. So also Reynard met with 27 cases of pneumothorax on the left side, to 13 on the right. No less curious is it that here also the facts ascertained with respect to pneumonia are just the contrary of those which belong to phthisis. I mentioned, in a former lecture, Andral's conclusion, derived from the observation and collation of 210 examples, that pneumonia is more than twice as common on the right side as on the left. M. Lom- bard, of Geneva, found the ratio somewhat less than this, but still great. Of 8(58 in- stances of pneumonia, 413 occurred on the right side alone, 2(i0 on the left alone, and }9o on both sides at once. That is, there were three on the right side alone, for every two on the left alone. The tubercular matter, then, being deposited on the mucous surface of the vesi- cles, and of the small bronchial tubes that conduct to them — groups of these diseased nir-cells, lvi/ig contiguous to each other, become, more or fewer of them, amalga- PHTHISIS. 629 mated, or fused, as it were, into one large mass : and generally there are tuberclea of various sizes, from that of a pin's head, to that of a pigeon's egg, in the same lung. And there is yet another disposition which the tubercular matter is apt to take : it sometimes is diffused uniformly over a considerable space, occupying all the areolar and interstitial portions of the part affected, and having no distinct circum- scribing boundary. The part looks as if fluid tubercular matter had been poured into it, and there had hardened. This is what the French call tubercular infiltration of the lung. The tubercular matter, once deposited, may remain for a longer or shorter time in what is called the crude state ; surrounded by perfectly healthy lung, undergoinp- no increase in quantity, and no alteration of consistence. But in a vast majority of cases, scrofulous inflammation is sooner or later set up around the tubercles — or in the areolar tisssue imprisoned within the agglomerated masses — and then the whole breaks down in the way I mentioned before ; and the detritus is conveyed through one or more tubes into the primary divisions of the bronchi, and thence to the mouth, to be expectorated. Of course there is an excavation, cavity, cavern, or vomica, left. All these names are given to the void space which the tubercular matter previously occupied. Now there are some curious particulars to be men- tioned respecting these cavities ; but I must postpone them till our next meeting. LECTURE LVI. Phthisis, continued. Vomicae; adhesions of the pleurae ; ulceration of the larynx and trachea — of the intestines ; fatty liver ; auscultatory signs of a vomica : gurgling, cavernous respiration, pectoriloquy : general symptoms of phthisis : cough, expectoration, dyspnoea, pain, hectic fever, diarrhoea, wasting, oedema, aphthae. We were engaged, when we separated yesterday, in investigating the morbid anatomy of consumption. Bear in mind how and where the tubercular matter, which is the essence of that disease, is deposited in the lungs : that it occupies, by preference, their upper lobes, and the upper part of those lobes ; invading gradually the lower lobes, from above downwards, as the disease advances. Both lungs are, commonly, affected at the same time, though in unequal degrees. Among one hundred and twenty-three instances of phthisis, Louis found that the tubercles were limited five times to the left lung, and twice to the right. The tubercular matter, once deposited, may remain quiet and unchanged for some time; but in general it increases in quantity, until at length inflammation of a low and scrofulous character arises in the pulmonary substance in immediate contact with the tubercles — or in the areolar tissue involved in the larger agglomerated masses — in consequence of which inflammation a sort of suppuration takes place ; the tubercular matter becomes soft, and breaks down, and is ultimately expelled through the bronchi, trachea, and mouth. The vacuities left in the lung after this process of expulsion are called cavi- ties, excavations, caverns, vomicce. And I go on to consider certain points of prac- tical interest connected with these vomicas. In the first place, as j'-ou may see by the specimens upon the table, they vary greaiiy in size. They may be m* bigger than, or not so big as a pea : or they ...ci) be large enough to contain a pint or more of fluid. Sometimes the whole of the upper lobe is converted into a bag of this kind. These large cavities are never mel with in the lower lobes. They are formed by the union of several that are smaller; so that they are often of very irregular shajje, and divided, as it were, into chain bers, by imperfect partitions, or by bands Avhich cross them in various direction* Opening into the cavity there is always one, and there are generally several, per 3c2 G30 PHTHISIS. vious bronchial tubes, which seem as if they had been cut off just wliere they enter the cavity. But you never, or very seldom, indeed, find a hlood-vessfl thus opening into the cavity. And the reason of these differences is plain enough. ]t is not, as some modern authors have fancied, that the arterial or venous tissue possesses a low degree of vitality, and therefore resists or avoids the destruction in which the sur- rounding tissues are involved. That principle may be applicable to other cases, but it is not applicable to this. The opinion I am now referring to proceeds on the sup- j)Osilion that the bands which sometimes cross the cavities are really blood-vessels that have escaped the disorganizing process. Such seems to have been the nouon entertained by Bayle ; and it has been more recently and more expressly advanced by Cruveilhier. But the truth is, that these bands rarel_v contain blood-vessels: and when they do contain them, the blood-vessels are mostly impervious. In one \iun- dred and twenty-three cases, Louis found pervious blood-vessels in the bandb no oftener than five times. The true reason why bronchial tubes open into these cavities, and blood-vecsels do not, is to be found in the natural differences between the two sets of vesseL. in respect to their structure, and in respect to the fluids that pass through them. The blood-tubes yield readily to external pressure. Many of them are pushed aside and flattened by the progressive increase of the tubercular matter around them ; s&me, probably, are obstructed by its gradual accumulation within. In either case the stagnant blood coagulates, and the vessel is obliterated to some distance from the place of the original obstacle ; just as you know a clot forms, and seals up an artery, which has been tied during life, for some Httle way anterior to the ligature. But the bronchial tubes are neither so easily compressed, nor do they carry any coagu- lablc fluid. In the agglomeration of the tubercular masses, by the softening of which the cavities are formed,.the air-tubes included within the mass are filled up by it; and when the whole breaks down in scrofulous suppuration, they are expectorated with the rest of the detritus. Meanwhile, their open mouths, on the hither side of the point where the tubercular matter stopped, remain, and afford a channel through which the same matter, after it has become soft, finds its way towards the trachea. Occasionally, indeed — but that, I repeat, is a rare occurrence — a con- siderable blood-vessel does get laid open during the formation of a vomica, and then copious and fatal hemorrhage ensues. Occasionally,' also, an oozing or exhalation of small quantities of blood takes place from the inner surface of the cavity, tinging the matter expectorated. AVhen the vomica is first formed, by the expulsion of the tubercular matter, its inner surface is soft and ragged ; and if other softening tubercles are in the imme- diate neighbourhood, the cavity goes on enlarging; that is, two or more vo micas coalesce. If, however, there happen to be no more tubercles thereabouts, the cavity may remain stationary. Its inner surface then becomes smoother ; and something like a membrane forms upon it: and sometimes a puriform fluid is poured out by this surface, and sometimes not. G' r^ralljMhe pulmonar)' tissue around such a cavity is condensed and solidified ; par / perhaps by crude tubercular matter which it contains, partly in consequence of the inflammatory process of which it has been the seat during the softening of the tubercles. It is important to bear in mind this fact of the condensed, solid state of the lung immediately surrounding a vomica; for it explains certain peculiarities met with in the symptoms. There is another point of much interest connected with these vomicae. When they occur singly, without other tubercles or cavities (which, though a very rare thing, does sometimes) ; and when occurring thus singly they have been completely *?mptied of the tubercular matter; they may gradually contract, and ultimately be- come obliterated. This approach of their sides Ic^ds to a puckering of the pleura on the surface of the lung; and, on the other hand, a puckering of the surface indi- cates that beneath it there is probably a collapsed vomica. Its inner surface becomes converted in that case into a substance resembling cartilage ; and the appearance it presents is called a cicatrix ; and really it deserves that name. The process which lias gone on is a process of natural recovery ; and the recover}^ would be complete, kC nc fresh deposit of tubercular matter took place. Too often, however, the tuber- PHTHISIS. 631 cles multiply, until at length their number, or size, or effects, become inconr palible with the further continuance of Jife. This, then, is one way in which tubercular disease, limited to one small portion of the lung, may be eliminated, and the part which it occupied undergo a kind of repair. But the disease, lohen so limited, maij cease in another way. The more watery parts of the morbid secretion may be absorbed, and the earthy salts it con- tains may concrete, and the whole be converted into a shrivelled, hard, chalky mass, which somcumes is coughed up ; sometimes, in favourable cases, remains for years in the lung, an inert and almost harmless body. Let me smte, while I think of it, that the expectoration of these chalk-like concre- tions, denoting, as it usually does, the existence of pulmonary consumption, marks at the same time the chronic character of the case. I am acquainted with a gentle- man who, though delicate, enjoys a very fair share of health, and who has for years been coughing up, at intervals, little branching fragments, like bits of white coral, consisting principally of carbonate and phosphate of lime, and evidently moulded in the smaller bronchial tubes. When the tubercles are numerous — or rather when they lie near to the surface of the lung, as, of course, they are likely to do when thej-- are numerous — they very generally give rise to dry or adhesive pleurisy. So that, in a person dead of con- sumption, it is a very rare thing to find the lungs free from adhesions to the ribs. I mentioned before that this attachment of the lung to the walls of the chest affords a protection against a much more formidable condition; namely, perforation of the pul- monary pleura, and the escape of tubercular matter and air into the serous cavity; producing that worst kind of pleurisy which constitutes pneumothorax. That the pleurisy and adhesion are consequences of the presence and irritation of the tuber- cles, appears from this : — that, for the most part, the extent and the situation of the adhesions correspond with the extent and situation of the tubercular disease. Thus, a single spot of adhesion has been seen to unite the costal and pulmonary pleurae exactly opposite a solitary tubercle which lay near the surface of the lung. As the summit and back part of the upper lobes are most thickly set with tubercles, so here also is the adhesion the most constant, and the most firm. You will often find the upper part of the lung invested with a thick cap of false membrane ; and the connection between the pleural so tough, that the lung breaks down in the attempt to separate them. To show you that these statements — which have long been familiar to those much conversant with disease and with morbid anatomy — to convince you that they are strictly borne out by numerical or tabular facts, I may again have recourse to Louis. He tells us that in 112 cases which he himself examined of persons dead of con- sumption, and having therefore tubercles in their lungs, there was but one in which both lungs were free from adhesions. In eight cases the right lung was exempt from them, and in seven cases the left. Again, in twenty-five other instances, there were either no cavities, or very little ones ; and the adhesions were accordingly of small extent, and easily broken down. In the remainder there were large vomicae, and the adhesions were extensive, dense, and firm. Such is a sketch of the changes which take place in the lungs, in consequence of the deposition of tubercular matter in them, and of the changes which that matter undergoes. But the air-passages that lead to the lungs are very liable to become implicated as the disease proceeds. The mucous membrane of the larynx and tra- chea ulcerate ; and when the morbid condition of the larynx gives rise to prominent symptoms, and especially (as it is apt to do) to hoarseness and loss of voice, the dis- ease is sometimes called laryngeal phlhisis. But there is no such disease, that f know of, existing by itself. I mean, that scrnfalous ulceration of the larynx anu trachea occurs only when the lungs are affected -with tubercles. It is curious thai when ulcers are met with in the trachea, they are often found on one side of it onlv : on the side, viz., which corresponds with the diseased lung, or with that lung which is most diseased. In like manner, when some of the bronchi are found red inter- nally, and even ulcerated, these appearances are confined to those bronchi which CO nmunicate with cavities ; and do not occur in the bronchial canals leading to C32 PHTHISIS. crude tubercles. It is towards the back part also of the trachea that the ulcers, espe cially when large, are most commonly observed ; the floor of that channel when the patient lies supine. And when the epiglottis is involved in the mischief, the ulcers are situated, almost always, on its larjmgeal surface alone. We have strong reasons, therefore, for believing that their formation is influenced by the contact of the matter which is expectorated, in its frequent passage over the mucous membrane. More- over, the little mucous glands wherewith the membrane is provided, are most num*'- rous at the posterior part of the trachea and bronchi ; and these glands are especially prone to ulcerate. In respect to these points, also, Louis has made comparative observations. Among 180 persons who died of some chronic disorder, not phthisical, he once onlj'- met with ulceration of the larynx ; whereas, of those who perished with consumption, nearly one in even/ five had ulceration of the epiglottis and larynx, and nearly one in three had ulceration of the windpipe. Hence it would appear that, if we except the eflxxts of the syphilitic poison upon the larynx, ulceration of that part is almost peculiar to phthisis pulmonalis. I have told you that consumption is not merely a lung disease. Its local ravages are most obvious, indeed, in the thorax ; but it leaves in the abdomen, also, traces of its destructive agency, not less definite and scarcely less constant. You know that the surface of the intestinal canal is strewed throughout with separate mucous folli- cles, and that the lower portion of the ileum is furnished with other follicles, collected together in oval or circular groups. When I come to speak of continued fever, I shall have much to say about the changes which these little glandular bodies undergo, in one form at least of that disease. These same glands are the frequent seat ol tubercular deposit in phthisis. Here and there you may see a solitary yellow tumour, not larger than a hemp-seed, projecting from the surface of the bowel. In other places the ripened little tumour has burst, the tubercular matter is gone, and a ragged roundish ulcer remains. More frequently the aggregated glands are afl^cted ; and the ulceration, in them, varies much in form and extent. It often involves the whole patch, and then the shape of the ulcer is more or less elliptical. Louis met with ulceration of these glandulse agminatte in five-sixths of all the fatal cases of phthisis that he examined. Ulcers of greater magnitude were very nearly as common in the large intestines. And it is worthy of notice that, the disorganizing process being in these cases slow, nature has time (if I may use such metaphorical language) to pro- vide against the threatened perforation of the gut. The tissue that forms the base of the ulcer, whether it be the muscular or the peritoneal coat, is thickened and vamped ; or the bowel becomes adherent to some contiguous surface. Once only in my life have I known scrofulous ulceration, in phthisis, penetrate the serous tunic, and allow the contents of the intestine to escape into the sac of the peritoneum. It is fitting you should know — although the facts possess, as yet, no practical value — that the stomach is often much enlarged and thinned in those who die of consump- tion ; and that the liver is ver3''apt to undergo a remarkable change, almost peculiar, i believe, to that disease. It, too, enlarges, and becomes full of adipose matter, greasing the hands and scalpel of the anatomist, and yielding, when heated, an oily substance, which makes a grease-spot on paper placed in contact with it. The whole gland partakes in the alteration, is of soft consistence, loses its natural red tint, and assumes a pale fawn colour. No profession contributes so much as ours to the introduction of new, barbarous, and dissonant words into the English language. We have accordingly invented an epithet for this kind of liver. We call it (not they«/, bui) ihefatti/ liver. In three years, Louis met with this fatty liver forty-nine times; and forty-seven of the patients died phthisical. It occurred in one-third of the whole number of the victims to consumption ; whereas, among two hundred and twenty- three cases, not phthisical, there were two examples only of this hepatic change. Its presence is revealed during life by no symptoms, except that the enlargement belonging to it may sometimes be ascertained by percussion and pressure with the u nge rs. Let us now mquire Avhat modifications of the healthy sounds arise from the "tiiered conditions of the lungs in phthisis. Most of them are such as you would PHTHISIS. G33 naturally expect. Whether a portion of lung be rendered solid by comn.on inflam- mation, or by the presence of tubercles in it, the result, so far as the ascultatory signs are concerned, will be the same. In such a piece of lung, supposing the solidifica- tion complete, no vesicular breathing can be heard ; but bronchial breathino- and bronchophony will be audible, in each case, if the solidified portion encloses a con- siderable bronchus, and comes near the surface of the chest. And percussion will give a dull sound, whether the lung lying beneath the part struck be hepatized, or blocked up by tubercular matter. On these points, therefore, after what was said in a preceding lecture, I need not dwell. But the excavations, the empty or half-empty vomicae — these are something new. We have hitherto met with no condition ex- actly similar to that of a large cavity. And accordingly I have to make you acquainted with two or three new sounds : or sounds which are modifications of those formerly described, and in most instances sufficiently distinct from them to have acquired peculiar names. You will remember that what we have called laro-e crepitation depends upon the passage of air through liquids ; the liquids being con- tained in tubes ; those tubes the bronchi and their ramifications. But when pus or vitiated mucus, or liquid of any kind, is collected in a vomica, which communicates freely with the trachea through pervious bronchi, the bubbles produced by the entrance and exit of air will be still more numerous and large ; and a sound is then produced which the word gurgling expresses well. Laennec calls it gargouille- ment. This sound is heard, too, in a circumscribed space ; and not diffused, as laro^e crepitation usually is. Whenever, therefore, we hear gurgling during respiration, or during the act of coughing, there, we conclude, exists a cavity. But the cavity is not necessarily a vomica. In ninety-nine cases out of a hundred, it will be so ; but in the hundredth case perhaps it will not. Bear in mind what was formerly stated of dilatation of the bronchi : how sometimes they terminate in a considerable globular expansion ; sometimes belly out and contract again several times alternately: and you will see that cavities containing liquid, or liable to contain hquid, belono-ino- equally to the one condition and to the other, and the sound in question dependino- solely on the intermixture and agitation of air with liquid in a cavity, we cannot be sure from mere gurgling respiration, or gurgling cough, that we have a tubercular excavation beneath our ear; or that the case is one of consumption. Gurgling may also proceed from that very rare morbid condition, abscess, the result of common inflammation of the lung. These constitute the only sources of fallacy in the matter. The fallacy seldom interposes ; but it does sometimes interpose ; and therefore it must qualify om conclusion from this symptomof gurgling, in respect to cases other- wise doubtful. Again, the vomica may be empty of liquid ; and then we hear, as the patient re- spires, not vesicular breathing of course, nor yet exactly bronchial breathing ; it is something more than that when the cavity is large, something different in character from it when the cavity is small: but whatever the character of the sound, as ws believe it to take place in a vomica or cavern, we call it cavernous respiration. It is a hollow sound, especially when the cavity is of considerable size ; an exaggeration of mere bronchial respiration. But the cavity may be small. The moment a por- tion of tubercular matter is separated and discharged through a neighbouring bron- chial tube, the cavity has commenced ; and the sound produced through these little cavities during the breathing may be of various kinds. It may be, and it often is, a click, hke the opening and shutting of a valve ; or a chirp ; or a creaking; or like many other well-known sounds: but, as all these sounds, under certain circum- stances, denote the formation of a vomica, it is best for simphciiy's sake, to call them all by the same name — cavernous respiration. Dr. Latham explains in a few words the causes of these differences. "Th(! vari- eties of cavernous breathing are doubtless owing to different sizes, and forms, and situations of cavities, and to different conditions of the surrounding lun^. A cavity may be very large or very small. Several bronchi may open into it, or only one. It may be a simple cavity, or it may have many chambers. Its sides may be con- densed and equal, or rough and ragged. The lung around it may be solid and m durated, or pervious and vesicular." It may be near the ribs, or far from them 634 PHTHISIS. adherent to, or separate from the pleura. It is quite obvious that these different cir- cumstances are calculated to modify the sound, which will, nevertheless, be always such as indicates a cavity." A tubercular cavity may be so large, and of such a kind, as to yield the metallic sounds which are apt to be heard in pneumothorax. I show you a cavity in which those sounds were actually heard, most distinctly, by many persons, during the patient's life while he was under my care in the Middlesex Hospital. I was certain beforehand that these sounds proceeded, not from the cavity of the pleura, but from a tubercular excavation. Once subsequently, in a patient who was dying of phthisis and diabetes, I have heard the same sounds ; also, I am sure, in a tubercular cavity. The patient insisted on leaving the hospital, and I lost sight of him before he died. I promised, when speaking of these metallic sounds as arising (as they much more commonly do) from pneumothorax — a collection of air, or of air and fluid, in the sac of the pleura — I promised to point out the circumstances whereby you may tell which of the two conditions in question the sounds denote. Both of the conditions imply, in general, the existence of tubercular phthisis ; and therefore the observation of the ordinary symptoms of phthisis will not help us much. Now, in the cases seen by me, there were two circumstances that stamped them as beino- cases in which the sound proceeded from a cavity in the lung, and not exterior to it. One was the situaiion in which the sound was invariably heard. The other was, the absence of excessive resonance when that part was percussed. You know that when air is contained within the pleura itself, the sound yielded on percussing the chest in the corresponding spot is quite tympanitic, like that of a drum. But it is a well-ascertained fact, (though contrary perhaps to what you would suppose,) that the sound is duller over tubercular cavities, in nine cases out of ten, than over sound lung. The explanation of this fact is simple enough. It is that the layer of lung which still remains in such cases, thick or thin, is dense and solid, and damps the sound which the vomica might otherwise make resonant. But then again the situation of the metallic sounds was a guide. They occupied the upper part of the chest; the very part where vomicae are wont to be the most common, and the iaro-est : and moreover a part where pneumothorax seldom or never exists. The summit of the lung is generally covered in phthisis with a cap of false membrane, which binds it to the ribs : and this, as I observed before, is the main reason why perforation of the pleura pulmonalis is so rare in that disease ; and it is also the reason why, when it does take place, it seldom takes place at or near the apex of the lung. In truth it is found by experience that (though the rupture of the pleura maij hap- pen in any part) the place where it usually occurs is in the lower and back part of the upper lobe of the lung, opposite the angle of the third or fourth rib ; that is, just beneath the edge of the false membrane by which the summit of the lung is gene- rally adherent. But the sound, in the cases I refer to, was invariably heard at the very top of the chest. It did not shift, as that of pneumothorax may often be made to shift, when the patient changed his posture. Attention to these points will always lead you to an exact diagnosis. You may say, perhaps, " The complaint being in each case a mortal one, what is the use of so much refinement?" Why, there is this utility in it. We may sometimes, as I stated before, give great relief to the patient, and save his life for a time, by tapping the chest of pneumothorax. The air mav^et in with each inspiration, and threaten immediate suffocation ; and the thorax being^puncmrcd it will issue in a blast. But no one would think of tapping a tuber- cular cavity. To giveout the amphoric resonance and the metallic sounds, the vomica must, I presume, be a large one. That which is before you, the only one I ever saiv in which those sounds had-been heard, is very large. Its inner surface is smooth : it adheres to the ribs externally by at least two-thirds of its circumference : and the medium of aflhesion is very thin. Quite low down, a single bronchial tnbe, of about the third division, may be seen to enter it. So much, then, lor the modification by a tubercular cavity, of the sounds heard dunng respiration. But the voice will also be modified, if the cavity be of consi- derabfe size, and near the surface, and have dense walls, and be empty. Then we PHTHISIS. 635 hear, in that part, when the patient speaks, the sound which is called pectoriloquy: as if the voice proceeded from the chest. The words are distinctly articulated into the ear oi the listener. But 1 need not trouble myself or you by attempting to de- scribe pectoriloquy. You may any day hear the exact sound that word is intended to denote, by placing a stethoscope over the trachea of one of your friends, aj)plying your ear to the other end of it, and getting him to speak : just as you may obtain an exact notion of bronchial respiration by listening then to his breathing. For some time after the first appearance of Laennec's great and original work on the diseases of the chest, pectoriloquy was deemed to be the pathognomonic and infallible sign of a vomica. "Oh," the young auscultator would say, "I detect pec- toriloquy beneath the clavicle. There can be no further doubt about the nature of the disease. My patient has not only tubercles, but a cavity, in his lung." So I long thought ; and so some, I fancy, think still. Yet the evidence afforded by mere pectoriloquy of the presence of a vomica, or even of the presence of tubercles, is far from being certain or trustworthy. Experience ha'd taught me this before I knew that many others, studying under the same schoolmaster, had learned the same truth. Among my hospital patients some years ago was a man who laboured under phthisis. Percussion gave a dull sound under his right collar-bone, and in the same spot loud and distinct pectoriloquy Avas audible. I well recollect inviting the particular atten- tion of the pupils to this case, as affording an exquisite specimen of pectoriloquy ; and I predicted very confidently that after the patient's death, v/hich was obviously at hand, a large excavation would be found in the summit of his right lung. My prediction did me no credit. The left lung indeed was hollowed by cavities, but there was nothing like a cavity in the right. The upper part of the lung was tho- roughly and uniformly solid ; filled with hard, gray, tubercular matter. The large bronchial tubes were pervious, and the voice descending into them had been con- ducted by the solid lung with perfect and almost painful distinctness to the listener's ear. This was a useful lesson to me : and I mention it that it may be a lesson to you. Remember that solidification of the summit of the lung will modify the sound of the patient's voice, very much in the same manner as a large vomica there situ- ated. It is stated, indeed, and perhaps truly, that a practised ear can discriminate between the loud, diffused, though articulate, resonance of the voice produced by solid lung, and the circumscribed, whiffing, pectoriloquy of a cavity. But the dis- tinction is too nice for the average of practitioners. Piow since the pulmonary tissue may be rendered dense and solid by other causes than tubercles, pectoriloquy does not a]wa3's indicate the existence of consumption. The fallacious condition does not often occur; for common inflammation is seldom hmited to the upper part of the lung ; and the whole of that part is seldom completely hardened by crude tubercles. But" whenever it does occur, it is apt to mislead or puzzle. I was consulted last year about a gentleman in whom this phenomenon of pectoriloquy was strono-ly marked. Two excellent auscultators had been led, by this symptom, to the belief that a cavity existed in the lung. Remembering the case I have just mentioned, and learning that the patient had been ill for a few days only, and had not previously suffered cough, nor any apparent pectoral complaint, I was of opinion that the summit of his right lung had become hepatized by acute pneumonia. And it was so. The patient died; and the diagnosis I had formed was verified upon the inspection of the lung. Dr. Latham relates one or two examples to the same purpose. Dr. Stokes goes so far as to consider pectoriloquy the least important and most fallacious of all the physical signs of phthisis. Taken alone (he says) it is absolutely without value. Dr. Forbes has come to similar conclusions. Certainly cavernous respiration is a much more alarming sound. Wherever actual pectoriloquy from a cavity is heard, there also will be heard cavernous res])iration. But the converse of this is not necessarily true. There may be, and there often is, cavernous respiration and a cavity, yet no peclcri^loquy. Tho cavity is not large enough, or not near enough to the surface of the chest, or not of such a kind as to reverberate the voice. C^flen when pectoriloquy is absent, and cavernous respiration is doubtful, and gurg- ung even cannot be heard (because the communication with the bronchi is not free). 636 PHTHISIS. a slight splashing sound will occur when the patient coughs : nay, you niay some- times hear it, if he holds his breath, with every beat of his heart, which causes a little succussion in the cavity : but its contents must then be ihin. Now when the sounds I have been engaged in describing are well marked, they denote the existence of a vomica. The only source of fallacy is that which I formerly mentioned: the same sounds may arise from a cavity in the lung, whatever be its nature ; and therefore they may arise when the bronchi are expanded into cavities. But I repeat that this is a deceptive condition which you cannot calculate upon meet- ing with often. "" When the sounds are not w^ell marked, take time before you pronounce a decided opinion respecting them. Strong bronchophony comes very near to weak pectorilo- quy : bronchial respiration may closeJy resemble some varieties of cavernous breath- ing : large crepitation, confined to a small spot, may simulate gurgling. It is better, when the sounds are thus equivocal, and when they may denote conditions so very different in their nature and tendency, to suspend one's judgment, and to give a guarded opinion. A httle time in such cases will clear away the doubt. I am afraid of being tedious about these sounds ; but really they are of immense importance. Upon their exact appreciation, and correct interpretation, will depend the opinion you will be culled upon to express : and that opinion will, in many cases, be a sentence of fife or death in respect to the dearest friends of those who hear it. A correct diagnosis is also very important, in early periods of the disease especially, for another reason. It is in those early periods alone that we can hope to arrest the progress of the complaint by art, or by change of climate. I must now consider the general symptoms of this most afflicting disease: and while doing so, I shall point out how the physical signs confirm or confute their lan- guage, in cases which might otherwise be doubtful. The general symptoms of phthisis are cough, dyspnoea, expectoration, haemo- ptysis, wasting, hectic fever, hoarseness, or loss of voice, diarrhosa ; and there are some other symptoms which mark often some of its stages, and to which I shall incidentally advert. I shall speak of them all as briefly as is consistent with clearniess. Cough is one of the earliest symptoms of consumption ; and it is that which com- monly "first attracts the attention, and awakens the fears of the patient, or the patient's friends. Generally at first it is slight, occasional, and dry : it occurs upon the patient's getting out of bed in the morning ; or if he makes any unusual exertion in the course of the day. It feels to him as if it was caused by irritation about the throat. Sometimes it \\\\\ cease for a while, as in the w^arm w^eatlier of summer, and recur in winter when the external temperature is lower. By degrees it begins to be troublesome in the night : and to be attended with more or less mucous ex- pectoration. Now when such a cough steals upon a person gradually, and when no reason can be assigned for its occurrence, that circumstance alone is enough to excite suspicion as to its true nature and cause. But chronic cough may exist without any tubercular disease of the lungs ; as you well know. It may depend upon a disordered state of the stomach; the pneumogastric nerve may be irritated there. It may be the cough of chronic catarrh; it may result from disease of the heart ; it may be the nervous, barking, importunate cough which I formerly mentioned as of frequent oc- currence in hysterical girls. And bearing these circumstances in your mind, you will inquire and you will generafly make out without much ditliculty, whether there be any unnatural or deranged stale of the digestive organs ; or chronic catarrh ; or cardiac disease ; or hysteria. These are points on which I need not further insist. I may obuerve, here, that as chronic cough may exist when there is no consump- tion ; so consumption may sometimes exist, and even prove fatal, and large portions at the lungs may be disorganized, without there having been any cough ; or at least without the occurrence of cough enough to draw the notice of the patient or his friends to it. This is not common, howe^^er : cough is usually present more or less, during al.' the stages of phthisis, and it is often that symptom which most distresses •md iiarasses both the patient and his family. PHTHISIS. 637 Great a tention used to be paid to the expectoration in cases of suspected phthisis. It was thought that if a patient spat pus, he was in a state of confirmed consump- tion : and whole volumes have been written, and prizes awarded to their authors, respecting the means of distinguishing pus from mucus. But we now know that, so far as the diagnosis of phthisis is concerned, this is a very idle inquiry. The inflamed bronchial membrane may secrete pus ; so that the presence or absence of pus in the sputa is no test at all of the presence or absence of tubercles in the lungs. If you are, nevertheless, curious to know how pus may be recognized, one easy criterion is that proposed by the late Dr. Young. You are aware that pus, like the blood, contains globules ; and these globules, when examined through transmitted light, will exhibit prismatic colours ; appear surrounded by rings of colours, some- what resembling those of the rainbow, but differently arranged, and often beautifully brilhant. Mucus having no such globules, affords no such coloured rings. The way to make the examination is, to put a minute quantity of the fluid between two small pieces of plate glass ; to hold the glass close to the eye ; and to look through it at a distant candle, having a dark object behind it. A yet readier, and I believe a better test is furnished by the liquor potassx, which converts pus into a viscid stringy mass, while it liquefies mucus. Whether the expectoration be puriform or not, has ceased, however, to be a ques- tion of much importance as regards the diagnosis of phthisis. A portion of the matter expectorated comes from the surface of the bronchi, and consists of altered mucus : and therefore the sputa brought up in phthisis, and the sputa brought up in bronchitis are, in a great degree, the same. These are partly composed of a stringy transparent fluid, in which opaque masses of a yellow or greenish colour are seen to float ; and intermixed also with which there may be a good deal of froth. The froth is a measure of the difficulty with which the mucus is brought up : and it is usually less abundant and conspicuous in phthisis than in bronchitis. The heavy sage-leaf sputa that we sometimes see, belong to both diseases. You may occasionally find portions of tubercular matter in the expectoration; a circumstance quite decisive, when we are sure of it, of the nature of the case : dull yellow streaks, or little curd-like fragments involved in the mucus. But smaU opaque specks of that character are sometimes formed in the follicles of the tonsils ; and this makes the appearance more equivocal. The sputa most characteristic of tuber- cular disease consist of globular flocculent masses, which look like little portions of wool more than any thing else. Nummular sputa the French call these, because when spat into a vessel not containing water, they assume a flat circular form, hke a piece of money, and remain separate and distinct from each other. When they are spat into a glass of water, you perceive that some of them subside to the bottom — some float on the top, suspended, apparently, by healthier mucus in which they are entangled, or by bubbles of air — and some remain stationary at different depths. When stirred and agitated in the water, they render it shghtly milky. This kind of expectoration commonly marks a confirmed and advanced state of the disease; but it will continue for weeks sometimes. It is not perfectly pathognomonic, but nearly so. On one occasion I found expectoration of this nature from a man whom I did not very diligently examine by my ear ; and I set the case down as one of phthisis chiefly on the observation of that symptom. The patient evidently had not long to live. Our apothecary at the hospital, Mr. Corfe, had more time to explore trhe condition of the chest: and he came to the conclusion, that the disease was not tubercular phthisis, but extensive chronic bronchitis : and sure enough he was right. When we came to examine the lungs after the patient's death, not a tubercle could be foimd. I am satisfied that there is no kind of expectoration which indicates phthisis with perfect certainty ; but that which I have just been describing very seldom occurs except there is phthisis. Louis appears to have noticed these round separated, woolly masses twice only unconnected with tubercles ; and once the same thing has occurred to Chomel : so that, when the other symptoms are obscure and doubtful, this will materially augment the gravity of the prognosis. Fiies appear to be more attracted by the sputa of phthisis than by any other. Haemoptysis is a kind of expectoration; the expectoration of Hood. I hava 3i> 638 PHTHISIS. already spoken of this symptom as connected with phthisis, and have stated my belief on that subject; viz., that if a person spits blood who has received no injury of the chest, in whom the uterine functions are healthy and right, and who has no disease of the heart, the odds that there are tubercles in the lungs of that person are fearfully high. Excluding cases of amenorrhcea, and of mechanical injury to the thorax, Louis did not meet with a single example of haemoptysis among twelve hun- dred patients, except in such as were phthisical. I touched, at the same time, upon the question, whether haemoptysis, which some- times precedes for a while the manifestation of any other symptoms of consumption, is ever really the cause of it, as the old authors maintained. You will understand iny persuasion to be that, occurring in connection with tubercles, pulmonary hemor- rhage is always the consequence, and never the cause, of their presence in the lung. Andral relates a curious case, from which the contrary opinion might be argued. "A man, ill of chronic peritonitis, had been for nearly two months in La Charite, and had never presented any morbid symptom which had relation to the organs of respiration. He had no cough, and he breathed easily. One evening, for the first time, he sufl~ered some dyspnoea ; and in the course of that night he spat up a large quantity of florid and frothy blood. For the five following days the hasmoptysis continued abundant, then it diminished by degrees, and at length stopped. But the patient continued to cough, and to breathe with difficulty, and at length he died. In the right lung there were found several masses of a brownish-red colour, exactly circumscribed, and constituting, in short, that condition w^iich Laennec has called * pulmonary apoplexy.' One of these masses contained a considerable number of granulations of a yellowish-white colour, and having all the characters of minute tubercles in an early state. Two other of the red masses contained each a very small number of these white granules ; and in the remaining masses no tubercles at all could be discovered, nor was there any trace of them in other parts of the lungs ; but they were numerous in the false membranes of the peritoneum. Andral argues, that in this case the partial collections of blood that were found in the lung could not have been occasioned by the presence of tubercles, because in the majority of these masses no traces of tubercular matter could be perceived. On the other hand, their existence appears connected with that of the apoplectic masses, because, except in the midst of some of these, no pulmonary tubercles could be seen. But such a case as this hardly bears out the conclusion that pulmonary hemorrhage is ever the cause of tubercles. There were tubercles in the abdomen before ; there- fore, the disposition to tubercular disease pre-existed in this individual ; and then tubercular matter was deposited in the places where blood was extravasated ; just as we know it is deposited in the blood itself, in the spleen sometimes ; or, what 1 think more probable still, the cluster of granulations provoked the hemorrhage from the spot they occupied, and other lobules of the same lung became blocked up by the reflux of blood in the manner formerly explained. Prior to the age of fifteen, haemoptysis, even in phthisical children, is extremely uncommon. Dijspnira is not a very important symptom in phthisis. It is seldom extreme till towards the termination of the disease, and not always then. Patients who fear, and yet are unwilling to believe, that they are consumptive, will fetch a deep breath, and Did you remark how thoroughly they can distend their lungs ; and they expect you to say that there can be no disease in those organs. I have been told that the late Dr. Baillie died of pulmonary phthisis ; and that even he was accustomed to delude himself by this test. However, though phthisical persons do not in general suiTer much from dyspnoea, their breathing, though they may not bo aware of it, or choose 10 acknowledge it, is generally, in some degree or other, short, or hurried. You may wonder that a disorder in which so large a portion of the breathing apparatus is often effectually spoiled, should be attended by so little distress in respiration ; so liitie dyspnoea : but your surprise will be diminished if you consider the insufficient manner in which consumptive patients are nourished, in consequence of abdominal •- isease ; and the extent to which their blood is wasted by diarrhoea, and by perspi- ration Thc^ mass of blood is thus kept down to that measure which, passing through ■^ PHTHISIS. 639 the still pervious portions of the lungs, is capable of being arterialized without any great deviation from the ordinary mode and frequency of breathing. Neither is pain of the chest a very important symptom in consumption. In some cases severe pains are complained of, resembling those of rheumatism, in the sides, or beneath the clavicles. In others, no pain at all is experienced. When sharp pain occurs, it may be supposed that the pleura is inflamed and beginning to adhere in the painful part. There is, however, one contingency of which the two symptoms last mentioned are sometimes very significant. When, during the progress of phthisis, violent pain of the side, and extreme dyspnoea and anxiety, set in suddenly, they denote, with much certainty, perforation of the pleura, and its serious consequences. The hectic fever which accompanies phthisis is of much greater moment. It often creeps upon the patient insidiously. He feels chilly, perhaps, towards evening; and in the night his hands and feet are dry and burning; and in the morning he perspires. The most marked symptoms of the hectic are to be found in the perspi- ration, and in the state of the pulse. The perspiration is usually out of all proportion to the previous chilliness and dry heat. It seems to have a close connection with the sleep of the patient : it seldom comes on while he continues to be awake ; but after sleeping he wakes, and find that he is sweating. The perspiration is generally most copious on the upper part of the body, the chest and head. Sometimes it is moderate ; sometimes the patient is drenched and drowned in it. There is a good deal of uncertainty about this symptom, and of obscurity as to its cause. Generally speaking, it belongs to the more advanced stages of phthisis ; but occasionally it accompanies its early period. It will cease without any apparent cause ; and return again with the same capriciousness, A poor friend of mine, who died with phthisis, and was particularly harassed by the nocturnal perspirations, took it into his head that joos/t/re had something to do with them ; and slept for several nights in succession sitting in an easy chair: and during those nights he certainly did not sweat, though he had been doing so profusely before. Louis found that one patient in ten escaped this symptom. This is a symptom which is often very distressing to the patient, making him even dread to go to sleep ; it tends also to the rapid exhaustion of his strength ; and betokens, it is believed, when copious or persistent, a short duration of the disease. Frequency of pulse is a symptom so generally present in tubercular phthisis, that too much importance has been ascribed to it as a diagnostic sign. I mean, it has been too much the opinion that the lungs are safe, when the pulse does not rise above its natural standard. Sometimes it remains steady nearly up to the period of disso- lution. Such cases are, I beheve, generally slow in their progress. Very recently I lost a friend whose lungs were full of cavities and crude tubercK's. He had been a valetudinarian for years ; but the pulmonary disorder had been mani- fested by decided symptoms during a few months only. At no period did his pulse exceed sixty-eight beats in the minute. Commonly, however, the pulse is habitually above ninety ; and often it is much more. When there is nothing to account for this increased frequency of pulse, it is a suspicious symptom. Diarrhcpais a common, and an ugly symptom in phthisis. When it occurs early, as it sometimes does ; when a patient, having habitually costive bowels, becomes habitually relaxed ; and you suspect only, from other causes, that he may have inci- pient phthisis ; this change often sets its seal upon the nature of his disorder. Usually, however, diarrhosa does not become urgent until the disease is far advanced, and has aheady declared itself by other and unequivocal symptoms. When it so occurs, it is apt to harass the patient exceedingly ; and rapidly to waste his strength and flesh. He appears to melt away under the influence of the purging ; which is therefore said to be colliquative. It used to be held that the diarrhcea and the perspiration bore iw. inverse ratio to each other: that when one of them abated, the other always increased. But the more exact observations of Louis and others have proved that this is not so : that neither in phthisis, nor in other diseases, have these symptoms any such regular reciprocal relation. One reason, perhaps, fw this error, may be found in the cii cumstance, that acids, which have the effect often of checking the perspiration, tend 640 PHTHISIS. also, as is well known, to produce diarrhoea. Louis found that this symptom began early in the disease, and continued through its whole course, in one out of every eight patients ; and in one case only in every twenty-two was it wholly wanting. It depends most commonly, if not always, upofi scrofulous ulceration in the small intes- tines and in the colon. In Louis' experience, there w-ere, invariably, large ulcers, whenever the diarrhoea had been chronic and abiding, and the stools had been numerous. In the small intestines the ulceration evidently commences in the mucous follicles ; the glandulse solitarias, or the glandulse agminatase ; and sometimes, though not often, the ulcer perforates the bowel. It is probable that in the large in- tesune ulceration begins in the same waj', by the deposit of tubercular matter (which is subsequently removed) in the sohtary glands : but when once begun the ulceratino- process extends itself indefinitely to the surrounding mucous membrane. I should have stated before that, with this disease of the intestinal canal,. there is often found enlargement of the corresponding glands of the mesentery, which are frequently filled also with tubercular matter. Several of the symptoms that I have been mentioning — the state of the digestive organs, which interferes with the due assimilation of the food ; the drain implied in the profuse sweats, and in the habitual diarrhea ; — conduce to cause another con- stant accompaniment of phthisis ; and that is emaciation. — You know that the wasting in this complaint, when it is not cut short by some accidental complication before it has reached what may be called its natural termination, is extreme. It often is one of the earliest, as it is one of the most alarming, of the symptoms which the patient presents ; and it frequently becomes excessive before any perspiration or purging have taken place to account for it. If, without any apparent cause, a person grows thin and his pulse is quick, and his breath at all siiort — these are intimations which seldom prove unfaithful, that tubercular disease is at work in the lungs, and in the abdomen. (Edema of the ankles, and even some pufHp.:ss of the hands and face, are circum- stances which seldom fail to appear in pulmonary consumption : but they are among the latest of the symptoms. (Edema does not tell us what the disease is in such cases. We have been satisfied as to that some time before. But (unless there is some marked disease of the heart) it tells us that the disease is about to terminate. It is worth attention as a prognostic symptom merely. And the same may be said of aphtha). This is one of the last of the symptoms . but it does not always occur at all. I have lately described this morbid condition of the mucous membrane of the mouth and tongue, and have nothing more to say of it at present. It has the same relation to phthisis as to other chronic disorders : it marks, for the most part, the approach of their fatal termination. It is always interesting to couple changes of structure with their appropriate signs. I will therefore take this opportunity of telling you what Louis has observed of this relation, in respect to the larynx and windpipe. Ulceration of the epiglottis w'as often latent ; gave no appreciable signal of its existence. The symptoms that belong to it are, a raw, or pricking, or burning sen- sation at the upper part of the thyreoid cartilage, with occasional dysphagia, and the rejection of liquids through the nose, while the tonsils and pharynx present no visible alteration. Ulceration of the interior of the larynx is marked, when slight, by trivial pain in that part, and some variation from the natural voice ; when deep, by severer pain, and abiding aphonia. Ulceration of the trachea is seldom revealed by any symptom. And this is worth remembering : for patients are continually persuaded by medical men who know no better, that their symptoms are all tracheal. There are still a {e\\ other circumstances which, when they occur, accumulate conviction as to the nature of the disorder. The catamenia are suspended in women : and the hair falls ofl^. There are certain physical peculiarities too, which are strongly indicative of a tendency to consumption ; or perhaps I should say of the scrofulous diathesis. Largeness of the pupil, with a sluggish iris — in other w-ords, a nof. very sensible retina — constitutes one of these. A clubbed state of the ends of th« fu'.gers PHTHISIS. 641 with convex and adunque nails, forms another. Yet this last is not peculiar to tuber- cular consumption. I have heard of one case in which it was strongly marked : the patient died after a long illness — chronic puriform discharge from the pleura after >aracentesis thoracis : but there were no tubercles. LECTURE LVII. Phthisis, conlinued. Diagnosis. Forms and varieties of Phthisis. Ordinary duration. Age at which it is most frequently fatal. Influence of sex ; and of occupation. Question of Contagion. Treatment. In a former lecture, the twelfth of this course, I entered somewhat fully into the pathology of scrofulous and tubercular diseases in general. I pointed out the fact, that though such diseases afftct vast numbers of persons, and are most extensively fatal, yet that they affect almost exclusively certain classes of persons. That while some are so prone to tubercular disease, as to fall into it upon the operation of the slightest external causes, or even spontaneously — nay, in spite of every care to the contrary — others, again, who are constantly exposed to influences likely to call scrofulous disease into action, either do not suffer therefrom; or if they do become scrofulous, it is only when the external circumstances most favourable to the pro- duction of such disease have been intense in degree and protracted in their appli- cation. At the same time I showed you how commonly the disposition to scrofula de- scends in families : and I told you what observation has collected in respect to the causes which may excite scrofulous disease in persons hereditarily disposed to it. I shall not, therefore, go over that ground again. What I then said of scrofulous dis- ease in general is true of tubercular consumption in particular. I will merely remind you that these exciting causes are essentially causes of debility. Whatever tends to depress the vital powers, and permanently to weaken the body, tends also, in a predisposed frame, to engender or to call forth this fearful and most destructive malady. With respect to the detection of tubercular disease in the lungs, it is sometimes very easy, sometimes extremely difficult. It is easy when the tubercles are numerous, large, or far advanced : difficult, sometimes, when they are crude, scanty in number, and thinly scattered, and individually small. In the latter case they may not cause any appreciable deviation from the natural resonance of the chest on percussion, or from the natural smooth equable rustle of the breathing. It would be tedious to travel over again all the auscultatory and other symptoms, with the view of pointing out their bearing upon the diagnosis. I touched upon that point incidentally, when discussing the individual symptoms, in the last lecture. Many of the symptoms tell their story so plainly that any attempt to expound or interpret them would be quite superfluous. One or two cardinal points, however, which have rather been hinted at before than expressed, I may just advert to. The fact that tubercles occupy the upper part of the lung by preference, is of great moment in relation to the diagnosis. When the symptoms are equivocal ; when, as far as they are concerned, the case may either be one of chronic bronchitis, or of tubercular consumption ; a careful examination of the superior regions of the chest will often decide the anxious question. The sound resulting from the first gentle tap upon or beneath the clavicle, often rings in the physician's ear the knoll of his unfortunate patient. Even unusual distinctness of the sound of e.rpiration, if heard at the summit of the lung, and <2 fortiori if at the summit of one lung only, warrants the terrible suspicion that tubercles are breeding in that luntr. It may, indeed, be laid down as a rule, which is diversified with but few exceptions, that if you find dulness on percussion ; or coarse or insufficient breathing; or undue resa 41 3d2 642 PHTHISIS. nance of the voice ; or a click or morbid noise of some sort when the patient respires, or speaks, or coughs ; if you find this day after day and always, between the clavicle and the mamma in front, or between the clavicle and upper edge of the scapula, over the top of the shoulder, and nowhere else ; and more especially if these devia- tions from the healthy sounds be limited to one side, or greater on one side than on '.he other, or different in quality on the two sides ; you may set the case down as a case of tubercular phthisis. On the other hand, if in the same parts you still distin- guish all the natural sounds of the respiration, and can still obtain a clear sound on percussion, you are not to condemn the case, nor to despair of recovery, whatever its other circumstances may be. The worst symptom certainly, when auscultatory signs are wanting, is haemoptysis. Incipient consumption is most liable to be confounded with chronic bronchitis. Yet the leading features of the two are well contrasted. The morbid sounds belong- ing to chronic bronchitis are chiefly audible in the lower lobes of the lungs : those of phthisis in the upper. Some degree of expectoration attends the cough of bron- chitis from the first : the cough of phthisis is often, for a long while, dry. Simple bronchitis is not accompanied by haemoptysis. The pain that occurs in bronchitis is felt beneath the sternum : in phthisis pain most commonly afiects the sides, and the space between the shoulders. It is enough, I trust, to have drawn your atten- tion to these points, without dwelling upon them longer. Dr. Latham, in the little work which I have several times referred to, has laid down certain distinctions most deserving of your notice, in respect to the various forms of phthisis. This portion of his book is quite original. The facts, indeed, nave long been known ; but they have never before, that t am aware of, been made so instructive, by being clearl}'^ disposed, and exhibited in their proper bearings. He first divides phthisis generally into two forms, which he calls mixed phthisis and unmixed phthisis. And he illustrates what he means by those terms very simply and skilfully. He takes the case of an absorbent gland in the neck, affected with scrofulous disease. The changes which are liable to take place in it are wrought before our eyes. We have the privilege of watching them. Now, such a gland will sometimes enlarge, in consequence of the deposition of tubercular matter in its substance : it will grow large and hard without there being any pain, or heat, or redness, observable ; and it may remain in that state for weeks, or months, or years. But, in the majority of instances, the absorbent gland, after remaining for a certain time in this condition, will undergo, and cause, other changes. Pain, heat, and red- ness, will ensue; the hard gland will soften; the integuments will grow thin, and at length give way ; the softened tubercular matter, mingled with pus, will escape ; and then the pain and heat and redness — the inflammation, in short — will disappear ; and the abscess will heal, leaving behind it nothing more than a slight scar. This process may happen to one such gland, or to more than one, simultaneously ; or to several in succession. In this case there has been no more inflammation than was just enough to accom- plish its purpose of removing from the body the tubercular matter. The inflamma- tion has not transgressed what Dr. Latham has called its specific limit. But again it may go beyond that limit ; it may be both more severe and more extensive "than is necessary for the removal of the tubercular matter in the diseased gland. It may pervade the whole neck, giving rise to diflused redness, and swell- nig, and pain ; and the whole of the subcutaneous areolar tissue between the angle of the jaw and the clavicle may be loaded with effused serum and pus. All this you may see almost any day in the wards or waiting-rooms of a hospital. And Dr. Latham has happily chosen this affection of the cervical glands to elucidate what happens when the tubercular matter is deposited in the lungs, where one can- not see the changes it is suffering or producing. Tubercles in the lungs may remain for an indefinite period of time, in their crude state ; never softening at all, or softening only at a very late period. Or they may give rise to just so much of inflammation, and no more, in the pulmonary tissue sur- rounding them, as is sufficient to bring about their own softening and subsequent PHTHISIS. 643 expulsion. Or, lastly, the tubercles may excite much more mflammation of the lung around them than is requisite for their elimination : inflammation of every degree, and of any extent. Now, to the first two cases, when they occur, he gives the name of unmixed phthisis : the third he calls, on the other hand, mixed phthisis. We learn from aus- cultation whether the case be one of mixed or unmixed consumption ; i. e., we hear, in the unmixed forms, the sounds or modifications of sound which result from the presence of tubercles or of vomicEe ; and we hear these morbid sounds only : in every part of the lung where they are not audible, we hear the vehicular murmur of health. But in the mixed form we also hear these sounds. True, and we hear other morbid sounds beside. The tubercular disease is mixed with common inflamma- tion ; and we hear the sounds that denote common inflammation of the mucous membrane, or of the substance of the lung — sibilus, or large or small crepitation — we hear these sounds mixing themselves with the sounds which belong to the tuber- cular affection. This distinction is of considerable importance, for it concerns the treatment of the malady. The tubercular disease, when established, is beyond our power. The inflam- mation which is incidental to it, we may hope to alleviate or to remove. It is in the stage of vomicae that the disease commonly assumes the mixed character; and some- times the bronchial or vesicular effusion upon which the added sounds depend, may be got rid of by the seasonable application of a few leeches, or of cupping-glasses, or of a blister, or by a moderate bleeding from the arm, and the disease be brought back again, for a time at least, within its specific limits, and the patient be relieved from much distress and imminent danger. It is upon this principle that Dr. Latham explains the fact that most consumptive patients improve considerably, soon after their admission into the wards of a hospital. The poor are necessarily much ex- posed to those causes which tend to complicate the tubercular disease. The tuber- cular disease may as )^et be slight and limited ; but the superadded mischief, the bronchial and vesicular effusion, may be immense ; and this being submitted, often for the first time, to treatment, upon their admission to a hospital, is for a while removed. Now, if we had not the advantage of the method of auscultation, we could not ascertain these differences, nor detect them when they existed. You will perceive, I am sure, their practical importance. Of course, the more ready the surrounding lung is to take on inflammation — in other words, the stronger the disposition in the complaint to assume the mixed cha- racter — the more rapidly fatal is it likely to be. But of the unmixed form of phthisis Dr. Latham has made two interesting varie- ties ; and the truth of the distinctions he has drawn will be more manifest to you, the more you see of this terrible disease. In one of these varieties the lungs are appa- rently tenanted by a multitude of tubercles, which remain crude and unaltered for a considerable length of time. In the other, successive crops of tubercles appear to form; or at any rate the tubercles ripen and are expelled in successive crops; and there may be long intervals between each crop and the next. Dr. Latham thus describes the former of these two varieties : — "An individual loses the complexion of health, and becomes thin ; he coughs a little ; but perhaps he has no notable fever, and no constant acceleration of pulse." Upon auscultation of his chest, it is found that there is dullness beneath one or both clavicles, or about one or both scapulae, and an indistinct respiratory murmur in those parts; but the vesicular breathing is free and perfect in every other part of the lung. Here we have tubercles, crude, and in the upper lobe alone ; and this state of things may endure for years, without variation ; the patient remaining always a great valetudi- narian. " To such a patient (says Dr. Latham) it is a continual puzzle why he does not get well. He consults an infinite number of medical men ; and it is remarkable that he gets no comfort or satisfaction from those who understand his disease the best, and the greatest comfort and satisfaction from those who understand nothing about it. Those who know what it is, out of kindness do not tell him the truth ; and they cannot asseverate a falsehood stoutly enough to carry any weight with it ; 644 • PHTHISIS. whereas they who know nothing about it affirm boldly and unhesitatingly that it is all stomach ; really beheving that the whole and sole disorder is in the stomach, and that it is wiihin the reach of an easy cure." But at length — perhaps after a very long period — vomicas are formed ; and then the patient sinks rapidly, and his lungs after death are found riddled by cavities and stuffed with tubercles ; but every part of them not occupied by tubercles or vomicae is crepitant and healthy. In these cases, disease lingers long in the crude stage ; new tubercles are added, probably, year after year ; but none of them soften. They do not excite inflammation in the lung around them. You recognise the presence of the tubercular matter by the ear ; but there are no vomicas. At last vomicae are tbrmed, many at the same time, or in rapid succession, and the patient presently succumbs. The other variety of unmixed phthisis may be just as protracted as this ; but its character and progress differ materially. In the former case the patient's condition was one of invariable ill health ; in the one I am about to mention he has fits of ill health, and fits of comparative good health. He spits for a time considerable quanti- ties of puriform matter, and then ceases from expectorating altogether. He has hectic fever, and then throws it off', and then suffers it again : wastes, and recovers his flesh, and again loses it. . You will find such cases common enough ; and in these cases the morbid sounds will be correspondent to the symptoms. During the fits of illness you will hear gurgling respiration or gurghng cough at the apex of one or noth lungs : and during the fits of good health you will hear cavernous respiration, or pectoriloquy, in the same parts ; but ever}'where else you will hear a clear sound of vesicular breathing. Here the tubercular matter excites just enough inflamma- tion around it to achieve its own expulsion, and no more. The lung is destroyed bit by bit. Fresh portions of tubercular matter are deposited ; these ripen and soften, and are expectorated, and a vomica is the result : and then there is a period of quiet. And there being still a large portion of each lung to breathe with, the patient regains more health and strength in the intervals of his attacks, than the former patient pos- sessed habitually. But in this form of unmixed pulmonary consumption, a period at length arrives when the patient does not revert to the former state of apparent health. The quantity of lung that has now been destroyed forbids it. You may hear the sounds proper to tubercular disease over a large space, between the clavicle and the mamma, or anywhere about the scapula, on one or both sides ; yet still that part of the lung which is free from tubercles and vomicae is pervious and healthy : but the hectic continues, the emaciation increases, and the strength declines ; and the fatal consummation arrives. Of these two varieties of genuine and unmixed consumption, the first is the most hopeless. The tubercles are numerous ; they probably go on increasing in number though they do not soften ; there is not, and there cannot be, any even temporary return to health, either real or apparent. Whereas where the tubercles come singly, or in successive crops, and rapidly soften, and are expectorated ; and where some long time interposes between the crops ; the health and strength return, and there is just a chance that no more tubercles may form. It is in this variety of unmixed phthisis that a natural cure, by the contraction and cicatrization of a vomica, may by possibility take place. VVe cannot expect, and we must not permit ourselves to encourage hope, that the disease ivill cease in that manner : but if it ceases in any form of the malady, it is in this. [In regard to the curability of pulmonary consumption, Dr. Wood, in his Treatise on the Practice of Medicine, vol. ii., p. 109, remarks, as follows : — " I am not one of those who believe that phthisis is in all cases necessarily fatal. On the contrary, I believe that, in one stage or another, it is occasionally cured, or at least ends in perlect recovery. It is no very unfrequent event to see threatening symptoms of phthisis ffive way under suitable treatment. It cannot be proved, with absolute certainty, that these symptoms were tuberculous ; because the evidence of dissection is wanting, and the phy- eical signs are not sufficiently positive, in mild cases of early phthisis, to authorize a certain conclusion. But they are undistingtiishable from symptoms, which, in oth' i cases, are the PHTHISIS. 645 forerunners of confirmed phthisis; and we have abundant evidence from dissection, that tubercles are capable of undergoing favourable modifications. The probability is, that the tuberculous matter is absorbed, and sometimes, as shown by dissection, replaced by calcare- ous matter : and, if the diathesis be so far subdued as to prevent the deposition of other tu- bercles, before these have completely run their course, the disease may be said to be cured The circumstance that such remains of tubercles are not unfrequently found in the lungs of old persons, who have died of other diseases, would seem to show, that these cures are sometimes permanent. " But this is not all. It occasionally happens, that consumptive symp^toms disappear en- tirely even in the second stage of the disease, after the formation of a cavity. This event, it is true, is comparatively rare ; but some such cases have probably fallen within the notice of almost every practitioner of extensive experience. Even should the disease ultimately return, still, the case may be said to have been cured ; as the occurrence of a second attack of pneu- monia is certainly no proof that the first was not cured. But there have been cases in which no return of the symptoms has taken place during the residue of life, even though consider- ably protracted. Two instances of this kind have occurred in medical men of this city. One of the patients was affected, when a young man, with all the symptoms of phthisis, including frequent attacks of hjemoptysis, severe cough, hectic fever, &c., from which ho completely recovered, and continued exempt up to the time of his death, which occurred many years afterwards of typhoid fever. (See N.Am. Med. and Surg. Journ., viii. 277.) The other was my preceptor and friend, the late Dr. Joseph Parrish, who in early life laboured for a time under the symptoms of phthisis, and after his death, at an advanced age, was found to have several cicatrices of the upper part of one lung, which were obviously the remains of tuberculous cavities. (See jlm. Jour, of Med. Sci., xxvi. 25G.) The probabilities upon tlie whole are, that each tubercle has a tendency towards health, and, if alone, would in time end in perfect recovery; so that the great fatality in phthisis consists in the continued predisposition which causes the constant or frequently repeated deposition of other tuber- cles, before those first deposited have had time to run a favourable course. We may, there- fore, always entertain some hope, if applied to in the early stage, in cases of no great se- verity, of seeing a cure efiected ; and, even in the second stage, when the diathesis is not very strong, or the local disease extensive, there is no reason for absolute despair. Even in cases which appear to offer no chance of ultimate recovery, we may hope to be able very much to prolong the duration of the complaint, and sometimes even to add years to a valua- ble life. There is an individual now pursuing an active business in Philadelphia, though with a cavity in his lung, who eight years since was under my care with severe cough, co- pious purulent expectoration, night-sweats, hectic paroxysms, and great emaciation and debi- lity. When the second stage is clearly established, with severe constitutional symptoms, and the physical signs of extensive disease in the lungs, there is scarcely any ground for hope. If to the ordinary s)a-nptoms, in such instances, are suj^eradded continued vomiting and diarrh(Ea, the case may be considered as quite desperate ; and speedy death may be ex- pected." — C] This grouping of the different characters under which puhnonavy consumption may appear, has been performed by Dr. Latham with perfect fidehty. There is nothing overstrained or fanciful about his sketch; it is after nature ; and it is by tlie hand of a master. And there is something very refreshing in original views of this kind. Vastly more instructive too they are, than those presented by a dull compi- lation. I therefore again recommend you to study his little volume. I am sure that / have derived much useful and usable knowledge from it ; and so also may you. There is another form still of tubercular consumption which Dr. Latham has not omitted to notice ; but his observations on this form are not so new. It is a strikino-, but not very common form ; and it is sure to arrest the attention of the practitioner when it does occur. I have met with three or four examples of it. The phenomena are of this kind. The patient has difficulty of breathing, cough, htemoplysis per- haps, night-sweats, and much hectic fever : the symptoms, in short, which constitute the acute phthisis of some authors. But if you listen to the chest, you do not heat the sounds that are peculiar to phthisis : you do not find dullness confined to the upper lobes, or pectoriloquy, or gurgling respiration : but you rather find the super- added sounds which accompany mixed phthisis ; small crepitation all over thu lungs, succeeded by an absence or deficiency of the proper breathing everywhere Meanwhile there will be none of the expectoration which is characteristic of phthisis In short, you would not suppose that the disease was phthisis at all. Yet it must be called such, for after death you find the lungs thickly bestrewed everywhere witb 646 PHTHISIS. what I spoke of before as the granulations of Bayle ; nascent tubercles, myriads of them, gray and minute : what many persons call miliary tubercles. The tubercular matter, from some cause which we know nothing of, is thickly and uniformly sown over the whole of the air-passages, or throughout the entire extent of the lungs, and its sudden presence there in such abundance excit-es inflammation, which masks and conceals the specific disease ; and the true nature of the case is not suspected unti. after the patient's death. All the instances that I have seen — three or four only in number — were supposed by me to be cases of extensive inflammation of the lungs; and so indeed they were, but they were something more. The tubercles, doubtless, were the cause of the inflammation ; and not the inflammation the cause of the tubercles. From what I have been stating you will perceive how difficult it is to say what is the ordinary duration of phthisis ; concerning which a question was put to me at the close of the last lecture. The disease may be present for some time v,-ithout declaring itself b)^ any marked or unequivocal symptoms ; and therefore without attracting attention. But taking the cases as thej' occur, and estimating the duration of the malady from the time when it first manifests itself in a decided form, we find there is quite enough of variation to warrant the distinction that has been made by authors between chronic and acute phthisis ; or, to use the more popular and more expressive phraseology, between slow and galloping consumption. The following tabular statement jf the results observed by Bayle and Louis, will give you a some- Vv'hat more precise notion of the general progress and duration of the disease. The whole number of cases noted was 314. Of these 24 died within three months ; 69 between three and six months ; 69 also between six and nine months ; 32 between nine and twelve months ; 43 between twelve and eighteen months ; 30 within from eighteen months to two years ; 12 between two and three years ; 11 between three and four years ; 5 between four and five years ; 1 between five and six years ; 3 between six and seven years ; 1 between seven and eight years ; 3 between eight and ten years; and 11 between ten and forty years. You will remark that, as far as this account goes, more than one-half of the whole number died within nine months from the time when the disease first became mani- fest. This agrees with the experience of the late Dr. Gregory, of Edinburgh. He used to state that the ordinary duration of phthisis was about six months ; that some- times it lasted onl}' two or thvee months ; and that he had seen one case which proved fatal on the seventeenth day after the sj'mptoms were first observed. On the other hand, he had known one man who was at least 72 years old when he died, in whom symptoms of phthisis first appeared at the age of 18, and who was never free from them during all the intervening period ; being often hectic, and frequently- spitting blood. The average or mean duration of consumption has been computed to be about two years. This is a different thing, you will please to observe, from its ordinary duration. There are many other points in the statistical history of phthisis well worthy of attention and inquiry ; but I have not time to go into them in any other than a sum- mary manner. This part of the subject is very well worked up in Sir James Clark's lucid and sensible book upon Consumption : but you will have perceived, from the references I have so frequently had occasion to make to M. Louis, that his work is. the great storehouse or treasury of tabular information, in respect to the facts of tuber cular phthisis. It is an interesting question to determine at what period of human life consump- tion numbers the most victims. There are two short tables, one drawn up by Louis, containing observations relative to 123 cases, and the other by Bayle, respecting 100 — which throw some light on the question. The two tables agree, in the main, very closely. Thus, from the age of 15 to that of 20, Louis met with 11 deaths from phthisis, Bayle with 10; from 20 to 30, Louis met with 39, and Bayle 23; from 30 to 40, Louis 83, Bayle 23 ; from 40 to 50, Louis 23, Bayle 21 ; from 50 to 60, Louis 12, Bayle 15 ; from 60 to 70, Louis 5, Bayle 8. You see from this account how erroneous the common notion is, that consumption does not occur at an advanced period of life : that a person who has reached his thirtieth or fortieth year PHTHISIS. 647 IS thenceforth safe from that disease. From these two tables, and others collected by Sir James Clark, it appears that, taking decennial periods, the greatest number of deaths from phthisis happens between the ages of 20 and 30: the next greatest number from 30 to 40 : the next from 40 to 50 : and that, after these, it is a doubtful matter whether more perish of consumption between 50 and 60, or between 15 and 20, which last is only one-half a decennial period. These calculations refer, as you will remark, to human life after the age of puberty. Before that age, tuber- cular disease is fearfully common, especially in infancy and childhood. Among 920 children (532 girls and 388 boys) who died from the age of 2 to that of 15 years, no less than 538 (nearly three-fifths of the whole) were affected, Dr. Papavoine tells us, with tubercles. As far as numerical observation has hitherto been extended, it would appear that more women than men die of consumption. Statistical researches are of still greater interest, perhaps, when they elucidate the influence of different trades and occupa- tions in calling phthisis into existence. Sir James Clark has brought together much curious information on this point. There are certain occupations which appear to provoke pulmonary consumption by the direct application of local irritants to the lungs themselves : and there are others which tend indirectly to bring on phthisis, by lowering the tone of the general health : by producing debility and cachexia. But these two causes often go together: and it is difficult to estimate with accuracy their separate effect. The workmen whose employments have a directly irritating operation upon the respiratory organs, are stone-masons, miners, coal-heavers, flax- dressers, brass and steel polishers, metal-grinders, needle-pointers ; and many others who of necessity inhale during their labour an atmosphere loaded with irritating particles of matter. But, then, most of these men work also in towns, and remain for many hours day after day in a constrained position, in crowded or in close apart- ments. Moreover, some of these occupations, being sedentary, and requiring no great muscular povv'er, are unfortunately selected, for that reason, by persons who are naturally of feeble or delicate constitution. On the other hand, butchers, fisher- men, and their families, and farm-servants, are said to be comparatively free from phthisis. Beddoes ascribed this exemption to the use of animal food by these classes; but much of their better health is due, no doubt, to their habits of active exercise in the open air ; and to the circumstance that such employments demand a certain amount of bodily strength and energy, and therefore are not likely to be adopted by weak and scrofulous individuals. It is obvious that the whole inquiry is beset Avith sources of fallacy. We know, however, on the evidence of undoubted facts, that certain occupations do tend to induce pectoral complaints, and to shorten life. Dr. Knight, of Sheffield, informs us that fork-grinders, Avho are what are called dry grinders, die there of the grinder'' s asthma, or grinder'' s rot, before they are thirty- two years old. Razor-grinders, who grind wet and dry, live a little longer : the moisture diminishes, of course, the number of floating particles of metal. Table- knife grinders work on wet stones, and survive till they are between forty and fifty. I must refer you to Sir James Clark's book for similar facts in respect to the inhala- tion of silex, of the dust of mines, and so forth. Without pretending to assign to each alleged injurious influence its precise contribution of mischievous effect, we must be content, at present, with the practical inference, that such employments should, if possible, be avoided by all those who show any tendency to scrofulous disease. Is phthisis contagions? No : I verily believe it is not. A diathesis is not com- municable from person to person. Neither can the disease be easily (if at all) gene- rated in a sound constitution. Nor is it ever imparted, in my opinion, even by one scrofulous individual to another. Yet in Italy a consumptive patient could not be more dreaded and shunned if he had the plague. And in this country the suspicion Will now and then arise that the disease may be infectious. A girl dying of phthisi'! is nursed by her sister, who afterwards droops and dies of the same complaint, Here the presence of peculiar diathesis is strongly presumable. But the parties may be different in blood. A wife watches the death-bed of her consumptive husband, and presently sinks herself under consumption ; and there may be no traceable or 648 PHTHISIS. ncKnowledged example of scrofula in her pedigree. Yet even here the latent dia- thesis may fairly be presumed to have existed. Very few families are perfectly pure from the strumous intermixture. The predisposition may be slight; it may be dormant for a generation ; or, like other inherited peculiarities, it may light caprici- ously on some individuals only of the kindred. In both the supposed cases there have been other influences at work, more authentic than the alleged contagious pro- perty, in calling forth the fatal malady. Watching, the want of rest, confinement in the unwholesome air of a sick chamber, and, above all, protracted mental anxiety, than which no single cause perhaps has more power to foster and forward the inbred tendency to phthisis. The disorder, I am satisfied, does not spread by contagion. Nevertheless, if consulted on the subject, I should, for obvious reasons, dissuade the occupation of the same bed, or even of the same sleeping apartment, by two persons, one of whom was known to labour under pulmonary consumption. The treatment to be adopted, and the plan of regimen to be observed, in respect to tubercular phthisis, resolve themselves into the methods of prevention when the disease is likely to occur ; of arresting its progress when that disease is incipient or limited in extent; and of alleviating the most distressing symptoms, when no hope remains of stopping its course, or averting its fatal close. With regard to the prevention of the disease, in those, who, by inheritance, or by circumstances, are predisposed to it, a great deal might be said ; but the subject belongs rather to the head of medical police, or hygiene, than to the practice of physic. We deem that a person has that predisposition, which is ahnost a neces- sary condition of the development of tubercular disease, when we observe those marks of the scrofulous diathesis which I pointed out in an earlier part of the course : or when we know that the parents possess that peculiarity of constitution ; or when brothers have displayed it. It would be well indeed for society if the multiplication and diffusion of the strumous diathesis could be checked by a prudent avoidance of ill-assorted marriages. But we cannot say — no legislature could say — to a scrofu- lous man or woman, you shall not marry, and propagate scrofula. It is reasonable, however, to conclude, and the conclusion is amply borne out by the observation of facts, that where both parents are strumous, the child will, in all probabiUty, be doubly so ; or that, at any rate, its chance of escaping the scrofulous disposition will be small. It is very desirable, therefore, that correct notions on these subjects should be generally prevalent : and that persons who are conscious that scrofula in any of its shapes exists in their family, and, a fortiori, they who know that it exists in their own corporeal frame, should avoid allying themselves with such as are in the same predicament : and this prudence might be enforced if they could be made to foresee the suffering and misery its neglect is calculated to inflict upon their ofl^spring. In- termarriages of persons of the same family, when that family is subject to tubercular disease, are earnestly to be deprecated. But on these points our advice is seldom asked. We are liable, however, to be consulted respecting the mode of ivarding q^ scro- fulous disease in those who have derived an hereditary tendency to it from their ancestors. Now the first, and most efl"ectual prophylactic in such cases, is residence in a warm climate : and next to that is the avoidance of all causes likely to foster the morbid tendency. I need not repeat what I formerly told you on this subject. Pure air; nourishing, but unstimulating food; moderate exercise; early hours; cleanliness; warm clothing; and abstinence from excessive study, from severe bodily toil, and from vicious and exhausting indulgences of all kinds: these are the topics upon which we much insist, when our advice is sought for respecting the means of preventing consumption in children or others, who are in danger of contracting it. But when the disease is present — when tubercles actually exist, and are ascer- tained to exist in the lungs — may the progress of the disorder be ever suspended by a change of climate ? Indeed I believe it may : but only in certain cases, and in zertam stages of the disease. When phthisis occurs in either of its slow and un- mixed forms, the question of a change of sky will be worth entertaining. In that form in which tubercles remain long in the crude state, I believe life may be pre- served or lengthened by leaving this country, and residing under a higher and more PHTHISIS. 649 equable temperature, provided that no softening of the tubercular matter has yet taken place. And in the other form — when a vomica or vomicae have occurred, and the strength is apparently restored, and the remainder of the lungs gives out the sounds of health — in that case also I would recommend a voyage to a milder climate to those persons who could afibrd to migrate, and to whom it was a matter of im- portance that they should prolong their earthly existence. I believe there is no place to which such persons could go with more hope of benefit than to Madeira. There are, however, places on our own coast that offer no ineffectual substitute for warmer lands beyond the sea, to those who cannot so conveniently expatriate themselves. Hastings, for instance ; the Isle of Wight ; and more especially Torquay on the coast of Devonshire ; and Penzance, or its neighbourhood, in Cornwall. In those sheltered spots the patient may sometimes pass the colder weather of our winter and spring months in comparative security. If, however, the lungs are already in a state of rapid disorganization, no benefit, but on the contrary much inconvenience and useless expense will result from change of place, unless that place in which the patient is residing be notoriously unhealthy. When I am asked about removal, either to another country, or to some distant part of our own, and the state of the patient is such as I have just alluded to, I always advise that he should not forego the comforts of his home — and leave his family and friends — to seek advantao-e which he will not find, among strangers, and amid the discomforts of a lodging per- haps, or an incommodious dwelling. I think it cruel and wrong to send people away merely to die : and that many are so sent to this place and that, in the almost certain prospect of their never returning, no one, I think, can doubt. You will find a great discrepancy of opinion among authors, and among practi tioners with whom you may converse, in respect to the regimen, which consump- tive persons should follow. One man gives all his phthisical patients beefsteaks and porter ; another restricts all his to vegetables and asses' milk : and each will boast, and bring forward most triumphant examples, of the success of his system. Now it is quite obvious that for a sick person who receives benefit from the one of these plans of diet, the contrary plan could scarcely be otherwise than injurious ; and reason at once suggests that there must be some distinction between the cases that get better under the one system, and those that improve under the other. Doubtless, we must have regard to the constitution and habits of the patient ; and sometimes trial alone will show which plan is the most beneficial; but I beheve the best clue to lead us out of the difficulty will be found in Dr. Latham's division of phthisis into mixed and unmixed. The object is, to sustain the patient's strength without excitino- inflammation in his lungs. If, with the specific disease, there be conjoined an in- flammatory condition of the pulmonary substance around the tubercles, or of the bronchial membrane ; in such cases an antiphlogistic diet is the proper one. On the other hand, when the disease manifests no tendency to trangress its specific limits, then the diet should be generous and full: and it may be so without being over- stimulant. Debihty, however induced, adds to the disposition to the deposit of tuber- cular matter ; and therefore the debility arising from insufficient nutrition is to be avoided as carefully as is compatible with the other indication, which is, to obviate inflammation of the lung. With these hints, you will be able, I trust, to strike the balance between the risk of augmenting the local mischief directly, on the one Jiand, and that of depressing the general strength, and so increasing the local mischief indi- rectly, on the other. Milk is a sort of animal diet, and it is both nutritious and un- stimulating; therefore milk may, in many cases, form the staple of the food, if the patient hkes it, and it agrees with him : but there is much variety in this respect in difierent persons. I repeat, that you will too often find prejudices entertained, on the one side or the other, in regard to the diet proper for consumptive persons : but the commonest error of the two is, I believe, that of reducing the patient's strength by a needless restriction of his nutriment, lest inflammation should ensue. Louis, should you refer to him, would be likely to lead you into the opposite mis- take ; for he affirms, that neither bronchitis, nor pneumonia, nor pleurisy, have any effect in exciting tubercular phthisis. But this opinion is quite opposed to the general sense of. most men of experience. Many a case of consumption can be traced back 3e 650 PHTHISIS. to a severe catarrh, and no further. Many, which rar. a short course, were dat»,'d, \\-ilhin my own knowledge, from the last visitation of influenza. If M. Louis had meant that thoracic inflammation will not produce tubercles in the lungs of a person who has not the scrofulous diathesis, and that tubercles may and do arise without any previous inflammation, I should quite agree with him. But he dryws his con- clusions from cases of phthisis. I have no doubt whatever that the dormant predis- position is often awakened into actual disease, and that latent tubercles are often : accelerated in their progress, by inflammation of the pulmonary tissues. Whether this happens directlj^ from the local inflammation, or indirectly from its effects in lowering the vital powers, is a question which no one can solve, and of which the solution is not of much consequence. What we are sure of is, that every one who bears a real or suspected taint of scrofula in his frame, should scrupulously guard against every known and avoidable cause of catarrh, pneumonia, or pleurisy. I hold M. Louis's doctrine on this head to be unsound and unsafe : and I mention it only to admonish you against it. In offering you a few final observations on the remedies of phthisis, I shall take leave to abstain from Aveighing the pretensions of a number of specifics, that have from time to time been highly recommended ; but which never have come into general use, as they would have done, no doubt, if they had been entitled to such a denomination. In the first place we must satisfy ourselves as to the kind of case we have to deal with; whether it be mixed or unmixed. We must watch our patient: and keep him on low diet, and take blood either in small quantities from the arm, or by leeches or cupping from the chest, whenever inflammatory symptoms arise; whether they are discovered by observation of the general or of the physical signs. The bleedings must of course be small — and palliative only of the symptoms. Emetics, frequently repeated, have been recommended in the early stage of phthisis : partly on account of their reputed efficacy ; partly on theoretical grounds ; it being supposed that the tubercular matter may be thus removed from the mucous surfaces as fast as it is deposited. Of the value of this emetic plan, I am unable tc speak from any experience of my own. Counter-irritation is often of undoubted service : mustard-poultices to the chest when it is painful; or a blister or succession of blisters, or pustulation by tartar- emetic ointment, to encounter local symptoms. The effect of counter-irritation upon the progress of the tubercular disorder is apparent sometimes by accident. Dr. Abercrombie has related an example in which cerebral disease operated in this way ; the previous symptoms of phthisis disappearing. In some cases mania seems to have a similar consequence, obscuring the manifestations, and probably retarding the course, of consumption. It has been often remarked — you will find this stated by Sir B. Brodie — that after amputation of a scrofulous leg, phthisical symptoms, very little noticed before, have rapidly increased. And there is another fact, in relation to phthisis, analogous to these, which it is fit you should know and attend to, viz. that the progress of consumption is often suspended by pregnancy : — and when a mother is suckling her child, if the suckling be not too long continued, so as to ex- haust the mother. I suppose there is no doubt that women disposed to phthisis have been kept alive by successive pregnancies and sucklings. It is a very rare thing for a pregnant woman to die of phthisis. I have known only one instance of iL One of my patients in the hospital, a French woman, died of that disease ; and we found suppurating tubercles in her lungs : and a fostus of about five months in her womb. Riding on horseback has been strongly advised in the earlier periods of the dis- ease. Its main advantage seems to arise from its allowing the enjoyment of fresh air, and of exercise, without putting the patient out of breath ; and these advantages are great. It is affirmed that many phthisical patients remain free from cough, and those affected with hfemoptysis cease to spit blood, so long as they continue to take exercise on horseback. Gestation in a carriage, or in a boat, has the same good efl^jcts, but in a less degree. We are not able, however, to look upon equitation as PHTHISIS 65] so certain a cure in consumption as Sydenham did, who says that riding on horse back is as much a specific in phthisis, as the Peruvian bark is for an ague. Iodine and its compounds, and especially the iodide of potassium, ha\'e been much praised of late years for their reputed efficacy in phthisis. Given in small doses, I believe that they often have a beneficial influence upon the general health. I wish I could tell you that I had ever known them operate a cure of the manifested disease. Often — too often — all that we can attempt to do is to relieve the most urgent or distressing symptoms, and to make easier the patient's decline. One symptom which is both distressing and weakening is the nocturnal perspiration. The com- mon remedy for this is the dilute sulphuric acid ; and a very good remedy it is, but it is not equally adapted to all cases. If the bowels are costive — or if the bowels have not, as they often have, a tendency to be relaxed — then the sulphuric acid may be freely given ; and it will often have very good results. It may be exhibited three or four times a day, in doses of from twelve to twenty minims. But when this fails, or when the bowels are irritable and will not bear it, we must have recourse to other means. One of these is sponging the surface of the body at bed-time, or before the patient settles himself for the night, with tepid vinegar and water; using twice as much Avater as vinegar. And if the bowels are at the same time purged, I fiind the compound kino powder of the Pharmacopoeia an admirable medicine. It certainly has much power over the perspiration ; and it has these further advantages, that (containing opium) it tends to control the diarrhcea, and to calm the cough. Steel is another substance which exercises a marked influence sometimes over th' hectic fever. It was its efficacy in this way that gave celebrity to the famous ant: hectic mixture of Dr. Griffith, the Mistura Ferri Composita of the Pharmacopogis. Certain it is, that when steel is borne in the advanced stage of consumption, it often docs a world of temporary good ; — but in many cases it is not borne vvell. It in creases the cough, occasions headache, and distresses instead of reheving the patient. Nor is it always easy to say beforehand, whether it is likely to suit the case or not. I apprehend it will at length be found most applicable to the unmixed forms — the uninflammatory forms, that is — of phthisis. I have frequently, however, succeeded in checking the wasting sweats by the tindura ferri miirialis, given in doses of twenty minims thrice a day, after other expedients had failed me. When the cough is very troublesome, and especially when it breaks the patient's rest at night, we must endeavour to quiet it ; and there is no drug, I fear, that wc can depend upon for that purpose, but opium. The old paregoric has been, and is, a favourite form for giving opium to appease cough ; and old-fashioned apothecaries will tell you that the alteration which was made by leaving the aniseed out of this compound tincture of camphor, in the last Pharmacoposia but one, impaired its effi- cacy. Whether it was so or not, I cannot tell ; but Dr. Prout is of opinion that aniseed has considerable power in allaying the irritation on which the cough depends. He infuses three drachms, or half an ounce, of the bruised seeds in half a pint of distilled water at a temperature not exceeding 120°, and lets it stand till it is cold. On his strong recommendation I have tried this, as a vehicle for paregoric, when the same dose in other vehicles had failed ; and I must say that it has frequently been followed by a marked abatement of the frequency and violence of the cough. The aniseed is restored in the paregoric of the last Pharmacopeia, that of 1836. Hy- drocyanic acid has sometimes a very soothing effect upon this harassing symptom. However, at last, opium will be found our sheet-anchor, not merely for the cough, but for the diarrhoea which is so seldom absent in the later periods of phthisis. The diarrhoea depends, as I have told you, upon an ulcerated state of the bowels. In those cases in which it could scarcely be kept in check at all, t have always found very extensive ulceration in the large intestines ; but the diseased condition is often seated higher up, in the ileum or jejunum. Catechu is of great service in these cases, combined with laudanum and with the officinal chalk mixture ; — or a few grains of the confectio opii may be given in peppermint water, after every loose evacuation ; or, in obstinate cases, a pill composed of a quarter of a grain of the sulphate of copper, and the same quantity of opium, will often answer well, thougli 652 MELANOSIS it sometimes gripes. I mention these several expedients, for you will often require them all. The injection of a small quantity of starch, as much as the rectum will receive and retain, with ten or twenty drops of laudanum, generally affords the patient most sensible comfort, and suspends the further action of the bowels for a considerable time. These, I think, are the principal means by which we may endeavour to smooth the pillow of the patient dying of consumption. Sometimes very httle pain or dis- tress is felt at all, from first to last ; the intellect remains free, and the patients are proverbially sanguine about the issue of their disorder. In other cases, do what we will, the patient suffers greatly. One harassing incidental combination of symptoms is nausea and vomiting. I should have stated before, that when, in phthisis, these symptoms last long, and are accompanied by pain and tenderness of the epigastrium, they denote, almost always, a thinned and softened condition of the mucous mem- brane of the stomach. They may be alleviated by a few leeches — by a blister — by the effervescing draught ; or the prussic acid may be used ; that is a medicine which certainly tranquillizes an irritable stomach, and it now and then seems to allay an urgent cough. Sometimes, again, the bones of the miserable patient are laid bare, in consequence of pressure upon parts in which the circulation is already very feeble. We cover these with soap-plaster ; take off the pressure by arranging cushions ; or, what is much the best of all, we put the patient upon the water-bed, invented by Dr Arnott. LECTURE LVIII. Melanosis of the Lung ; true, and spurious. Accidental intrusion of solid sub' stances into the air-passages. I YESTERDAY adverted to certain callings which are unhealthy for various reasons, and among the rest for this : that the work-people engaged in them breathe habitu- ally an atmosphere loaded with particles of matter which clog or irritate the pulmo- nary tissues. There is one morbid condition, so produced, which hitherto, or till lately, has scarcely been mentioned by writers on disease, but which deserves a mo- ment's attention ; for although it is very uncommon in many parts of this country, it is by no means rare in some others. The texture of the lungs is spoiled by mat- ters carried in with the air, in the acts of breathing. This morbid state has been called spurious melanosis. The lungs are found after death to be throughout of a black colour, more or less uniform. Sometimes the pulmonary substance is dry and friable, as well as black ; sometimes moist, (Edematous, infiltrated with an inky fluid ; not unfrequently broken down into irregular cavities of various sizes ; and thesi! cavities are often full of the same black liquor. You are not to confound these appearances, when you happen to meet with them -—(and as you will probably scatter yourselves, some here and some there, over vari- ous parts of the kingdom, some of you are very fikely to meet with them) you must avoid, I say, mistaking these black appearances and products, for true melanosis. The disease so denominated is a singular one. It was first fully described and named by. Laennec in 1806. It consists in a morbid product, presenting a black or deep brown colour of various degrees of intensity, moist generally, unorganized, and dif- fering in the form it assumes, and in its consistence, according lo circumstances. I shall take this opportunity, for I am not likely to have a better, to tell you the little that has been ascertained in regard to this kind of disease ; and having done so, I shall revert to a short account of spurious melanosis. These black deposits take place most frequently of all in the areolar tissue, and in the adipous tissue : and they occur in greater abundance, and in larger masses, ac cording as these reticular tissues are more plentiful, and more lax. They are met ^kh also m the compound organs of the body ; especially in the hver. Less fre MELANOSIS. 653 quently in the lungs. Sometimes in the eye. Occasionally m the brain. The serous membranes are obnoxious to the same kind of disease ; the mucous very little so. The black or dark-coloured matter may also exist, in a liquid condition, in the natural cavities of the body. And lastly, the melanotic material is sometimes mixed up with scirrhous and brain-like malignant tumours. With respect to the shapes in which it appears — it is sometimes dotted, the sur- faces affected by it looking as if they had been thickly sprinkled over with coal-dust or soot. But more commonly melanosis assumes the form of solid tumours, of vari- able magnitude. These tumours are largest, where reticular tissue is most loose and abundant. They may be no bigger than a pin's head, or they may be as large as a man's head. Masses of this kind have been found in the horse, weighing as much as six-and-thirty pounds. In the human subject they may attain the size of an orange. These large tumours (like large pulmonary tubercles) are usually formed by the union and agglomeration of several smaller ones, and hence they have gener- ally a lobulated surface : while the shape of the separate smaller tumours is naostly spherical. Sometimes the areolar tissue lying around the melanotic masses is con- densed into a kind of cyst : more generally the black matter is in naked contact with the tissue, whatever that may be, in which it is lodged. From the serous surfaces, especially from the pleura and peritoneum, knobs of a dark colour are seen in some instances to project; in others, the round tumours, as big as peas, or cherries, hang from these surfaces by a sort of peduncle. The omen- tum is a common habitat of melanotic tumours. Occasionally, I say, the black matter is found spread in a continuous layer upon the serous membranes ; or is collected in a liquid state in their cavities. But this, compared with the occurrence of solid tumours, is rare. When this remarkable disease is met with in one tissue or organ of the body, it is met with in others. It is never confined to one part, but pervades several : re- sembling in this respect both the scrofulous matter which constitutes tubercle, and the matter of cancer. Miiller indeed considers melanosis to be a species or variety of carcinoma. Scattered notices of these singular and striking changes in the animal frame occur in the works of Morgagni and of Haller ; but since the period when Laennec first drew the special attention of the profession to the subject, the black matter has been carefully analyzed by several expert chemists. Without going into any tiresome detail, which you could scarcely remember, as to its exact composition, it is interest- ing to know that it is very like that of the blood : and no doubt the material is some- how deposited from the blood. Very little, however, has been ascertained about its primary origin and cause. Some have supposed that the melanotic matter is ana- logous to the natural pigments which are found in the animal economy ; all of which are known to be rich in carbon. It is a curious fact that the disease has been more often observed in white or gray horses than in others. (I should tell you that the complaini is not at all uncommon in various quadrupeds : examples of it have been noted in ihe horse, ox, dog, cat, rabbit, rat, and mouse.) It has been conjectured that, in white animals, the colouring matter of the surface, and of the hair, has been di- verted, by some morbid process, from its proper locahty. But the very same disor- der occurs also, though not so often, in dark, or bay, horses and cows : and certain pathologists imagine that in these cases there has been an undue accumulation, in the blood, of the carbon which is destined to colour different parts. In the one case, you see, they hold that the pigment is misplaced ; in the other that it is excessive. What value these speculations as to the nature and origin of the disease may posse^ss, time alone can determine. When the tumours are divided, and moist, or when they are rendered moist by admixture with water, they freely impart the colouring matter ; staining white paper, and blackening one's fingers, just as Indian ink might do. The disease most fre- quently happens, when it happens at all, in the decUne of hfe. The changes to which the melanotic tumours are liable, are very much like the changes which tubercular matter is apt to undergo. In certain situations where the secr^tjd black material is subject to pressure, and is poured out in a soft consistence 3e2 654 SPURIOUS MELANOSIS. ihe watery parts are sometimes absorbed, and the rhass becomes hard and firm. On the other hand, the pressure occasioned by the tumour sometimes provokes inflammation in the tissues surrounding it ; and then it is hable to be broken down, pxactl\- in the same way as that in which tubercles soften prior to their expulsion from the lungs. The injurious effects of these collections of black matter arise from the pressure they occasion ; and they may evidently thus cause pain, irritation, ulceration ; and according to their situation, number, and extent, they may materially interfere with important functions. And in this manner they do, in fact, at length destroy life. There are no symptoms that I know of, distinctive of this disease, except the ap- pearance of the black masses upon the surface of the body. Nor can I pretend to point out to you any cure for it, when it is ascertained to exist. Yet it is right that you should be aware of what pathologists have learned re- specting this curious morbid state ; although that be little, and not very satisfactory. And I have introduced this brief consideration of melanosis here, somewhat irregu- larly, perhaps, to enable you to distinguish from it that pulmonary disease to which I referred in the outset of the lecture, and to which I shall now return. This, I say, has been called spurious melanosis : and it has doubtless been mistaken for the spe- cific disease of which I have just given you a sketch ; for real melanosis. It is, however, a very difTerent affection. Laennec had conjectured that certain kinds of black discoloration of the lungs .vere of extraneous origin ; were owing to the introduction of black matters from without in che process of respiration ; and Mr. Pearson, in this country, had thrown out the same idea. But this was first ascertained to be actually the case in Edin- burgh. Dr. J. C. Gregory had a patient who died in the infirmary of that city, and whose lungs exhibited the following appearances : — They both presented one uni- form black carbonaceous colour, which pervaded every part of their substance. The right lung was broken down, in its upper and middle lobes, into irregular cavities ; and the walls of these canities were black ; and they contained a considerable quan tity of a black liquid like ink. Portions of the pulmonary substance were dense, hepatized, and friable. The rest of this lung was (Edematous; and when the serum which then rendered it thus cedematous was pressed out, it also, the serum I mean, was quite black. The left lung was infiltered, in the same manner, with black serum. No tubercles could be detected. The bronchial glands were not enlarged, but they were stained of the same sable hue as the substance of the lungs. No other organ of the body presented any trace of this black discoloration. Dr. Chrisiison, who is known to be a very exact and able chemist, undertook an analysis of the black matter contained in the serum expressed from these lungs. I shall not follow out the details of his researches (you may read them at length in the l(K)th number of the Edinburgh Medical and Surgical Journal), but content myself with stating their result. And I may state it in Dr. Christison's own words. "In the product of this experiment (he says) it is scarcely possible not to recognize the ordinary products of the distillation of coal. A gas of the same quality was procured, and likewise a naphthous fluid holding in solution a crystalline principle, analogous to, if not identified with, naphthaline." Now the man, whose lungs presented the appearances I have described, had, for the last ten or twelve j^ears of his fife, been employed in the coal-mines at Dalkeith. He had been exposed, therefore, to the habitual inhalation of coal-dust into his lungs in breathing : and taking this circumstance in conjunction with the result of the analysis of the black matter contained in the lungs, and nowhere else throughout the body, we cannot doubt that the carbonaceous substance so abundant in these organs was introduced from without. In truth we have now a large amount of evidence in proof that it must have been so. In the twenty-first volume of the Medico-Chirur- gical Transactions, Dr. William Thomson has recorded the results of extensive inquiry into the subject. Thus he gives ten examples of black sputa going along with pulmonary symptoms during life, and of black infiltration of the lungs disco- vered after death ; and of the ten persons who were the subjects of these observations, nme had been engaged in working coal-mines, and the tenth was a moulder at the SPURIOUS MELANOSIS. 655 Carron iron-works. He gives also six cases of black infiltration of the lungs, all occurring in persons exposed to the inhalation of carbonaceous matters (one of them was an engineer, and the others were all colliers) ; but in these six cases there had been no black expectoration noticed during life. That such carbonaceous particles, floating in the atmosphere, may be, and must be, and actuall}^ are, drawn into the lungs during inspiration, no one who has been long in this smoky town can doubt. Many persons remark that they expectorate during winter, and while in London, a little mass or two of dark gray, dirty mucus, every morning; but when in the country, in the summer, the mucus so spat up is transparent and clean. So I have noticed, and pointed out to some of you, that the crachoirs of the patients in the hospital often bear witness that there has been during the previous twelve hours, one of our dense and dirty fogs, which come with an easterly wind and bring wnth them a vast quantity of blacks, and soot, and smoke. Immediately after the prevalence of one of these filthy blankets of vapour, we find the contents of each of the httle vessels given to the patients whose expectoration is kept for inspection, to be deeply tinged with black. And I had, in the year 1832, a patient whose sputa were remarkably loaded with dark matter. He came into the hospital complaining of cough, and shortness of breath, and a sensation at the lower part of the right side of the chest, as if it were pierced by needles ; and he was spit- ting a considerable quantity of thick mucus, which was almost black. Tliis colour never entirely left the expectoration while he remained in the hospital ; but it very greatly diminished in proportion as his ailments were relieved. Now this man was a stoker at one of the gas-works. And he attributed his illness, which had come on gradually, to the great alternations of heat and cold to which his occupation exposed him : and the blackness of the sputa he ascribed to the continual inhalation of coal- dust. And no doubt he was right. It may seem strange, if the inhalation of atmospheric air loaded with minute par- ticles of coal or other carbonaceous matter be sufficient to produce this remarkable condition of the lungs, and the characteristic black spit, that the change, and its nature and cause, should not have been earlier made out ; considering the vast number of men who are employed in our mines and collieries. It appears, however, that a great repugnance has existed, and probably still exists, among the labourers in the coal-mines, to allowing their dead to be opened and examined. And it ap- pears also that the peculiar state of the lungs which I have been speaking of is pro- duced in a comparatively small number of those who are so employed. The precise cause, why some are thus affected, and some are not, is yet to be discovered. Dr. Thomson has circulated among medical men residing in the coal-districts, a fist of queries (which he gives in his paper), respecting various points of interest in relation to this pulmonary condition : and we may expect to obtain, by degrees, more exact information about it. I recommend it as an interesting subject of inquiry to such among you as may have opportunities of prosecuting it. It has been conjectured that the specific change takes place, in a marked degree, only in lungs that were previously unsound. It is a question whether the cavities met with in the pulmonary substance, in the fatal cases, were the result of spurious melanosis ; or of the explo- sion of tubercular matter which had co-existed with the melanotic state. It is a curious circumstance that the black spit, as it is called in those districts, sometimes does not make its appearance until some time after the labour in the coal-mines was given up. Certainly this is a complaint that offers several interesting points of re- search, and requires further investigation. You will remark that the spurious melanosis is distinguished from the true, by ita occurrence in those persons only who are somehow exposed for a certain length of time to breathe an atmosphere which is largely encumbered with carbonaceous par- ticles ; whereas true melanosis may occur in any locality. The spurious discolora- tion never affects any other oro-ans than the lungs and bronchial glands ; the true black deposit of melanosis is never confined to a single organ or tissue. Moreover, the one disorder is absolutely beyond remedy ; the other, as soon as its presence is ren- dered probable, by the black expectoration, and the pulmonary distress, may be tnitigited, checked, perhaps gradually cured, by removing the patient from the ope 656 INTRUSION OF SOLIDS ration of the exciting cause, and pursuing such other measures as the symptoms may seem to require. The distinction is not a matter therefore of mere curiosity : it bears upon the treatment to be followed, which is our proper business. It is connected also with medical police or hygiene, which w^e should all of us cultivate as exten- sively as we may : as a science intimately related to our strictly professional pursuits, and to the welfare of the community. Other forms of disease, unquestionably cancerous, occasionally infest the lungs. Their chief symptoms, when the malady does not reach the surface of the body result from the pressure which the carcinomatous masses exercise on the parts in their neighbourhood. I shall postpone a more particular consideration of these efTects of intra-thoracic pressure, until I come to aneurismal tumours, which have a similar mechanical influence. There is yet another affection of the breath-machine, to which I must briefly direct your attention : a casualty that is apt to befal the air-tubes. I said nothing of this, indeed, last year; but having since witnessed an example of the accident to which I allude — the entrance, namely, of some solid substance into the windpipe — 1 have thus been reminded of my former omission, and taught at the same time the neces- sity that every medical man should have well considered such cases. I was taken to Kentish Town, in the autumn (1837), by a professional friend, to see a child, into whose trachea a small nail, what is commonly called a tack, was thought to have passed. When I saw the boy, he seemed to have nothing the matter with him : but he had been subject, ever since the accident, to paroxysms of most violent choking cough; alarming the parents and his attendants for his hfe, There was good reason for concluding that the nail, which was missing, and which he said he had swal- lowed, had really got into the windpipe, and was still there, or in the lungs ; and the question w^as much discussed, what ought to be done in such a case? The result was, that nothing was done : but that, after the lapse of several weeks, the nail was at length coughed up. Now there are some interesting points arising out of this sort of mischance. The instance I have just referred to will probably be published ; and therefore I dwell upon it the less. Dr. Stokes has devoted a short chapter to the consideration of foreign bodies in the air-passages : and examples of that accident are more common than you might suppose. It is, at first sight, a surprising circumstance, that a solid body of any considerable magnitude (a molar tooth for instance), should be able to pass at all through the nar- row chink of the glottis. But, supposing the chink to be plugged by the sudden entrance of a passing substance, just at the commencement of a forcible endeavour to inspire, when, of course, the opening is at the widest, that substance must neces- sarily sustain, as the chest expands, a strong degree of pressure from the external atmosphere : strong enough, often, to force it through. If you cork a bottle that con- tains air only, and sink it sufficiently deep in the sea, the pressure of the water will push the cork into the bottle. The condition of the lungs, in the case supposed, and the condition of the bottle, are analogous. A vacuum beyond the plug is attempted by the act of inspiring, and obviated by the displacement of the plug, inwards. There are no such powerful forces called into action to drive the intruding substance out again. The matters which have been actually thus caught in the rima glottidis, and forced through, are, as you might almost expect, oddly various in kind. Morsels of food : the stones of fruit ; of these there are many instances : teeth ; three such are referred to by Dr. Stokes : portions of bone : pebbles : a piece of money : a nut : a nut-shell : a button : a musket ball : a large shot : a fragment of nutmeg : iron nails : kidney beans : ears of grass or corn ; of these, four examples at least have been noticed : one is mentioned by Dr. Stokes, two are recorded in the Gazette Medicate, and I show you a monument of the fourth, in this interesting preparation, for the history of which I am indebted to Mr. Mayo, The young son of an English nobleman was riding in a carriage, in or near Paris, and had an ear of rye in his INTO THE AIR-PASSAGES. GST mouth. The carriage made a sudden jolt, and the ear of rye disappeared. Little was thought about this at the time : but soon afterwards symptoms of pulmonary irritation set in, attended with hectic fever, and with the most foetid expectoration. The boy gradually sunk. The ear of rye lay, as you may perceive, in an abscess which was common to the right lung and to the hver, through the diaphragm. If any of you have tried the boyish trick of slipping boiieath your wristband an ear of bearded corn, you will have no difhculty in understanding how and why, with every movement of the parts in contact with it, the ear will travel onwards ; and how improbable it is that such a substance should ever be expelled from the lungs by coughing. Yet, in one of the cases, recorded in the Gazette Mklicale, by a physician whose sister was the subject of the accident, an ear of barley was so rejected, seven years after its entrance. During that long period she had suffered repeated attacks of copious hfemoptysis. Her recovery was perfect. The very enumeration which I have just made may convince you that the acci- dent is not a very unfrequent one ; and it is more than probable that fatal cases hap- pen, the nature of which escapes detection. The results of the accident are various also. In the first place, it sometimes causes speedy death by apnoea. 2dly. It may be followed by inflammation of the lung, and perhaps abscess ; and so destroy life. 3dly. Death may ensue, after symptoms resembling those of chronic phthisis. 4thly. The " foreign body," as we oddly enough call it, may be expelled through the glottis, after a variable period of time. Sometimes, yet not always, its expulsion is the condition and the harbinger of the patient's recovery ; but he is never safe while it remains. Death may take place in a few seconds when the substance sticks in the glottis. Death has occurred within three days, when the substance had passed the glottis : and in eleven days when it had reached the lung. The intruding piece of matter has escaped, through the natural passages, after remaining imprisoned for seventeen years. In that case, the patient died, hectical and emaciated, a year and a half afterwards. It may be worth our while to consider these particulars somewhat more closely ; and to inquire what, in different cases, becomes of the foreign body which thus, to use a common phrase, " goes the wrong way ;" and what the symptoms are to which it gives rise. First, then, I say, it may get wedged in the slit of the glottis, and produce imme- diate suffocation. I mentioned, before, the frequency of this kind of death by mis- adventure. If you are summoned to any one whom you find comatose, or apparently just dead, and you learn that he had been suddenly attacked with choking during a rneal, lose no time in examining his pharynx and gullet. You may chance to save a life so. The accident often happens to persons who ar.e drunk. No doubt it hap- pens oftener than we are aware of. The attack is very likely to be mistaken for an apoplectic seizure. In these cases of sudden choking, the morsel of food is not always caught in the rima glottidis. If it be large enough to stick fast in the pharynx, it may provoke, through a reflex action, an abiding spasm of the httle laryngeal muscles, and so pro- duce death by apnoea. The remedy for such an emergency, as Dr. Marshall Hall truly observes, must be immediate : and this is what he tells us should be done. " Pressure being made on the abdomen, to prevent the descent of the diaphragm, a forcible blow should be made by the flat hand on the thorax. The effect of this is to induce an effort similar to that of expiration; the larynx being closed, OBsophageal vomiting lakes place, and the morsel is dislodged." " If this plan fail, not an instant being lost, the pressure should be kept up on the abdomen, the finger should be introduced into the throat, and the same smart and forcible blow made on the thorax as before. By the irritation of the fauces the cardia is opened, and by the blow on the thorax (firm pressure being made on the abdomen) an effort similar to that of expiration, with a closed larynx, is made, and a direct vomiting ensues, and the morsel of food is carried away." 42 ak 658 INTRUSION OF SOLIDS 2dly. The substance, if small, may, after it has passed the chink, remain in the [ar3-nx : entangled in its ventricles, or between the chordae vocales. In that case it usually occasions very severe laryngeal symptoms — spasmodic gasping coucrh, choking sensations, croupy respiration, and pain in the 'arynx — symptoms which harass the patients without intermission, until death ensues, or until the substance is driv-en upwards into the pharynx, or passes downwards into the windpipe. There 7s, however, one instance on record, in which a piece of gold was lodged for years in the ventricles of the larynx, without these distressing consequences. 3dly. Having passed the upper part of the larynx, it may stop, and become fixed beneath the cricoid cartilage, or in the trachea. In these situations, unless it quite blocks up the passage, its presence may be productive of but little distress. A wheezing or croupy sound during one or both of the movements of respiration, and some degree of pain and tenderness of the part where the substance was lodged, have constituted all the evidence of its position in the air-passages, in more than one instance. A very singular and whimsical case of this kind, related by Professor Macnamara, is referred to by Dr. Stokes. A boy had made a whistle, by perforating a plum-stone, and extracting the kernel. This, during a strong inspiration, passed from between his lips, through the glottis, and became fixed transversely in the larynx. So little inconvenience did it create, that the boy, finding that he still whistled as he breathed, went about for some hours, pleased to display this new ac- complishment. For three days he continued to occupy himself in his childish amusements, suffering now and then a seizure of suffocating cough. He was then taken to the Meath Hospital. He had no pain in deglutition ; but he said when the cough was severe, it caused pain in his throat. He had also uneasiness in the epi- gastrium, a bloated countenance, and a frequent pulse. The chest sounded well on percussion, and the vesicular murmur was natural. The fits of coughing were fol- lowed by white frothy expectoration. Laryngolomj^ was performed; but during the struggle and the convulsive cough which took place when the opening was made, the stone (so the patient declared) was coughed up, and swallowed. The symp- toms, were relieved; and the whistling ceased. But it was found that, as the wound healed, the distress and the whistling sound returned ; which showed that the stone lay above the opening; and that the disappearance of the symptoms had been owing, not to its dislodgment, but to the admission of air below the point where it was fixed. Soon after this, however, it changed its place, passed down into the right bronchus, and then up again towards the larynx. By a second operation it was extracted ; and the lad recovered without any bad symptom. 4thly. The substance may get beyond the trachea, into one of the bronchi, and stay there. And it is a very curious fact, and one which has evident importance in respect to diagnosis, that it is almost always the n^/t/ bronchus which the substance enters. Dr. Stokes has explained why it is so. The septum that divides the extremity of the trachea into two branches, is not placed in the middle of the channel, but de- cidedly towards the left ; so that any solid body falling down through the windpipe, is naturally directt-d into the right bronchus. Perhaps this tendency is aided by the more vertical direction, and by the somewhat greater capacity of that tube, com- pared with its fellow. Now you will readily apprehend what sort of symptoms would be likely to result from the impaction of a solid body in either of the primary bronchi. It would be very apt to excite inflammation of the corresponding lung, which inflam- mation would reveal itself by its proper signs; but it would produce pecuhar aus- cultatory phenomena, prior to and independent of such inflammation. It would prevent, partially or ahogether, the entrance of air into the lung of that side. Hence, when we have other reasons for thinking that a solid body has passed the glottis, if we find the vesicular murmur suspended or enfeebled in one lung, while percus- sion gives out its usual clear sound, we may conclude that the intruder is lodged in the bronchus belonging to that lung. Dr. Stokes believes, and his opinion is fortified by his own experience on the sub- ject, that smooth bodies (beans or shots, for example), are more calculated than such as are rugged and uneven to cause urgent distress when impacted in one of the nronchi ; inasmuch as they more completely plug and obstruct the tube, thereby INTO THE AIR-PASSAGES. 659 Jepriving the patient at once of the use of half his lungs. An irregular substance, which can neither seal the passage up, nor be closely grasped by its spasmodic con- traction, will probably occasion less dyspnoea, and at the same time will be less likely to be dislodged by the effort of expiration. Under these circumstances we look for more chronic symptoms. Sthlj^ and lastly. The intruding substance may not be fixed anywhere, but may shift its place from time to time ; and this, in fact, is what most frequently happens ; and when it does happen, it gives rise to a very striking and distinctive series of symptoms. Paroxysms of suffocating cough and extreme distress, when the sub- stance is driven up into or near the larynx; with intervals of comparative quiet, and sometimes indeed of apparent health, when it subsides into the trachea or bronchi. But during these intervals, the signs that sometimes mark its situation in those tubes may perhaps be discoverable. There are, then, a set of general symptoms, which lead us to behave, or to suspect, that some solid body has entered the air-passages : and there are other sets of par- ticular symptoms, which inform us, with more or less certainty, whereabouts it is fixed, or that it is not fixed at all. A person, previously in good health, is seized with violent cough and choking dyspnoea, suddenly, during a meal, or while he had in his mouth some loose substance, which he fancies he has swallowed. This is a sufficient clue to the probable nature of the case : and we next inquire for a sense of soreness in the windpipe, and wheezing respiration; for signs of bronchitis or of pneumonia, especially in the right lung ; for signs of obstruction of the bronchus on one side, and especially on the right side, or of alternations of suffocating cough, with intervals of outward calm. In the last case, we may expect to find the bronchus unstopped during the periods of laryngeal irritation ; and vice versa. When we know that a sohd body has been entrapped in the air-tubes, our business is plain ; there is no room, in my opinion, for hesitation ; we must let the substance out through an artificial wicket. There is danger, so long as it remains in these vital passages, of speedy suffocation ; of fatal damage to the larynx, or to the lungs ; of cerebral mischief during the violent paroxysms of coughing. Convulsions and apoplexy have, under such circumstances, actually occurred. Against these perils there is no security, except in the early performance of tracheotomy. If the in- cluded substance be loose and smooth it will presently be shot forth at the new orifice; if it be fixed, or angular, it may generally be extricated by a skilful and delicate hand. Even while this sheet has been passing under the press, (May, 1843,) another instance has occurred of the same accident, and excited a degree of anxious interest in the public mind, scarcely less than is accorded to a royal illness. It befel a gen tleman whose name was previously famous. Mr. Brunei, in amusing the children of a friend with some tricks of legerdemain, put a half-sovereign into his mouth ; and the coin shpped, as from its size and shape it might easily do, through the chink of the glottis. It seems to have occasioned no very urgent distress. The patient was made aware, by some internal sensation, that it lay towards the tight side. After more than three weeks had passed, the trachea was opened ; but the piece of money did not come forth. Probably its weight prevented its being driven up and down in the windpipe ; and its form, when it lay edgeways, did not oppose much impedi- ment to the breath. The same weight, however, brought it back to the larynx when- ever Mr. Brunei placed himself with his head downwards. In some of these experiments, coming crossways I suppose, it produced most violent cough, and feel- ings of impending suffocation : but in a final and happier trial, at the end of six weeks, it dropped out again, through the natural passage — ^just as a coin may some- times, by good luck, be shaken out of a box through a sht in its lid 660 DISEASES OF THE HEART. LECTURE LIX. Diseases of the Heart : usually partial. Changes in its Muscular Texture. Me chanism of those changes. Natural Dimensions of the Heart. Natural Sounds. Modifications of these by Disease. Review of the Physical and General Signs that accompany Cardiac Disease. You will perhaps accuse me, gentlemen, of a disposition to magnify the import- ance of every new class of diseases at which we arrive, in our survey of the morbid conditions of the various parts of the body in succession. There are few complaints, in truth, which are not important ; either from the discomfort to which they give rise, or from their tendency to abbreviate the span of human existence. Yet of tha s'.rictly vital organs the derangements are necessarily the most perilous ; and there- fore, to us, the most interesting. Two props of the tripod of life we have passed in review, and seen how they may be weakened, an-d how they may fail altogether. The office of the heart is not less essential to life and health, than that of the brain, or of the lungs. The well-being of every portion of the frame depends upon its being duly supplied with arterial blood, and duly relieved of that which has become venous : and this supply and relief require that the central organ of the circulation should be sound in its structure, and perfect in its working. But it is frequently otherwise. I can remember, indeed, the time w'hen disease of the heart was thought to be a very rare thing ; but it is now well known to be one of the commonest of disorders, and it connects itself with a variety of other affections, with which it was formerly supposed to have no relation. Like other organs that are complex of structure and formed of different tissues, the heart is subject to partial disease. Its lining membrane alone may, in the first in- stance, become the seat of inflammation, with its various effects ; or its investing membrane only may undergo morbid alterations ; or the muscular substance that constitutes the organ itself may be gradually changed in its qualities, in its bulk, or in its proportions. But the morbid conditions of the investing and lining membranes do not always, or immediately, compromise the fife of the patient. They are fatal at length, in ninety-nine cases out of a hundred, through the alterations to which they lead in the muscle wherewith they are connected. It may be practically useful therefore to consider, first, these ultimate morbid states which are incompatible with the con- tinuance of life ; and then to trace them back to the next fink in the chain of their causes, which will be found, in a very great number of instances, to consist in some antecedent morbid state of the exterior or of the interior membrane. The heart, you know, is a living forcing-pump ; a hollow muscular engine, with its chambers and their outlets, its contractile walls and their strength and thickness, so admirably adjusted, that the healthy balance of the circulation is continually main- tained, under many varying outward influences and inward emotions which tend to destroy it. In treating of disease of the heart we have to consider, therefore, the modes in which its mechanism may be spoiled or deranged : and the effects of such derangements. Not only the component tissues, but different portions also of the organ, may be separately diseased. It seldom happens, indeed, that the whole heart is affected ; although that is probably the vulgar belief. The left side is much more obnoxious to morbid changes than the right : and when both sides are implicated, the altera- tion is almost always more decided and conspicuous in the left than in the right chambers. In the rapid sketch which I attempted of general pathology, in the outset of the course, I pointed out the various kinds of alteration to which the tissues and organs of the body, and therefore the heart among the rest, are subject. One or more of the chambers of the heart, you will remember, may become larger or smaller than IS natural ; or have their walls increased or diminished in thickness, and consequently DISEASES OF THE HEART. 661 >«3 power ; or one or more of its outlets and orifices of communication may be widened Pf contracted : and the purposes and function of the organ will be more or less im- paired by these changes. In order, then, to have a clear conception of cardiac disease, it is necessary to analyze it, and to investigate the derangements of the several parts of the heart. And I begin with hypeiirophy ; augmentation of bulk in its muscular substance. And I must first of all define one or two phrases which are current among patholo- gists in respect to this condition. The muscular tissue of one, or more, of the chambers of the heart may become thicker and stronger than natural, while the capacity of that chamber, or of those chambers, remains unaltered. The hypertrophy in that case is said to be simple. But, while the muscular parietes are thickened, the corresponding chamber may become unnaturally large. This constitutes the active aneurism of the heart of Corvisart, the eccentric hypertrophy of more modern writers. On the other hand, it has been supposed that the capacity of a cavity of the heart may diminish in size as its walls increase in thickness : that the hypertrophy may take place at the expense (as it were) of the chamber. This has been called con- centric hypertrophy. Now of these three reputed forms of hypertrophy, considered in their relation to disease, two only, the simple and the eccentric, have any real existence. The third, or concentric form, never occurs, I believe, except as a congenital malformation. And of the two genuine species of hypertrophy, the eccentric, which is plainly a compound affection, consisting of hypertrophy with dilatation, is much the most common. The reason of this is to be found in the physical cause of the morbid condition, in most instances. The physical cause, in nineteen cases out of twenty, is some obstacle, mechanical or virtual, to the perfect accomplishment of the func- tion of the chamber ; some obstruction opposed to the free and thorough exit of the blood from it ; or something which hinders the easy play of the organ : hence, in the first place, a gradual yielding, or tendency to yield, in the sides of the affected chamber, from the continual and unwonted pressure of the accumulated blood against them, and in the second place, a striving action of the muscle to overcome the hindrance, or to counterbalance the obstacle ; and consequently, according to the law formerly announced, an augmentation in the bulk of the muscle whereof the function is thus increased. If the hypertrophy, which is the result of a truly con- servative process, keeps pace exactly with the amount of the obstacle and exactly balances it, no dilatation happens, or next to none. But this is comparatively seldom the case. According to the principles of mechanics, a httle distension of the sphe- roidal cavity must require an increase of force to propel from it a given quantity of blood, in the same time, through a given discharging orifice. So that incipient dilatation becomes (in addition to the supposed obstacle) an efficient cause of hyper- trophy : and the two, the dilatation and the hypertrophy, commonly make progress together. Ij Cruveilhier appears to have been the first to reject concentric hypertrophy from the catalogue of cardiac diseases. The smallness of its cavity, with a proportional increased thickness of its walls, was regarded by him as a transient condition of the ventricle, depending upon the mode of death. He found these phenomena very strongly marked in the hearts of all those whose bodies he had examined after de- capitation by the guillotine ; " Les parois ventriculaires se touchaient dans tous leurs points." It is therefore his opinion that the hearts which had been thought by others, to present examples of concentric hypertrophy, were in reality " hearts more or less hypertrophied, which death had surprised in all their energy of con iractility." This question has since been considered by Dr. Budd, in a communication to tht Medical and Chirurgical Society, which you may read in the twenty-first volume of its Transactions. He has lately favoured me with a statement of his matured viewa upon the subject. The semblance of concentric hypertrophy is most common in the left ventricle ; and depends upon the ventricle being nearly empty at the time of death, and upon 3f 662 DISEASES OF THE HEART. the corpse being examined while the heart is contracted by the rigor mortis. The fallacious appearance is accordingly noticed in cases where, from the manner of death, the left ventricle, or the entire heart, contains but little blood, and where, from the muscular powernol having been previously exhausted, the rigor mortis is of long duration. " In all these concentrically hypertrophied hearts (writes Dr. Budd) the ventricle may be readily dilated by means of the fingers, and always dilates of itself when the rigor mortis goes off." " In the published cases of concentric hypertrophy, in which there was no disease of the valves (I have given eight such cases in my paper, and could now add a long list to them) there were no signs, or only very slight signs, of disease of the heart, during the lifetime of the patient. This circumstance is sufficient proof that the cavities of the heart in these cases could not have been during life permanently in the contracted state in which they were found after death. A left ventricle that could scarcely contain an almond (a common form of expression in the description of these cases) would surely have caused a great impediment to the circulation." Moreover, concentric hypertrophy could answer no mechanical purpose ; nor could its formation be accounted for on mechanical principles. But " concentric hypertrophy of a ventricle, in a high degree, with obstruction at its discharging orifice, and an extraordinary channel for the passage of the blood, occasionally exists as a congenital malformation ; and, in most cases, the right is the ventricle so affected." To resume. Recollect that there may be two distinct kinds of physical cause of excessive action of the heart, and therefore of hypertrophy. In the one kind, there is some mechanical obstruction to the exit of the blood from one or more of the cavi- ties ; a constricted state of the orifices is the most common condition. In the other kind, without any such mechanical bar or dam to the fluid, there is something to hinder the free and sufficient play of the organ ; an adhering pericardium, it may be, or mal-position of the heart. If the heart be pushed, for instance, out of its pro- per place and posture by effusion into the pleura, or by distortion of the chest, it will not work with the same ease as when all is perfect and symmetrical; and the unu- sual labour imposed upon it fully to execute its office, will lead to hypertrophy. The causes of hypertrophy may therefore be situated within the heart itself, or with- out and beyond it ; but in all those cases in which the effect of the hindrance or obstacle is to detain the blood in one or more chambers, the hypertrophy will be likely to be accompanied by dilatation: and, generally speaking, the h)''pertrophy and dilatation result from disease in some part which lies beyond the affected cham- ber, in the order of the circulation. Thus, either a narrowing or a dilatation of the aorta at its commencement, will tend to cause hypertrophy and dilatation of the left ventricle. That contraction of the aorta, or of the aortic orifice, may have this consequence, you will have no difficulty in perceiving. The blood cannot so readily pass through the narrowed channel; hence it will tend to accumulate in undue quantity in the ventricle, therefore to stretch and dilate it; and the increased muscular efforts neces- sary to drive the delayed blood onwards, tend also to thicken the muscle itself. But it may not be so obvious that dilatation of the mouth of the aorta — a wider channel of egress — would also virtually prove an obstacle to the emptying of the ventricle. Yet it certainly would, in two ways. In the first place, dilatation of the entrance of the aorta implies a diminution in the elasticity of that vessel; and the blood, after it has left the heart, is urged onwards by the heaUhy elasticity. But, again, dilatation of the mouth of the aorta commonly implies an imperfect closure of that vessel by the sigmoid valves ; so that, during the diastole, a part of the blood is apt to regurgitate from the aorta, and to keep the ventricle morbidly full. You see, therefore, that a deviation from the healthy state of the aorta, and of the valvular apparatus which lies ac its mouth, may obstruct the course of the blood, and lead to hypertrophy and dilatation, whether the deviation be in the one way or in the other ; whether, I mean, uie naturai size of the vessel be increased or diminished. Again, disease of the mitral valve, obstructing the flow of the blood at that point, will lead to an accumu- HYPERTROPHY. 663 lation in the left auricle, in the pulmonary veins, and in the lungs them- selves. The auricular action is always less regular and energetic than the ven- tricular, so that we less frequently meet with hypertrophy of the auricles ; but very often with dilatation. And if we go to the other side of the heart, we find hyper- trophy with dilatation, and more especially dilatation of the right ventricle, when, from some reason or other, the blood passes with difficulty towards or through the lungs: either from disease of the pulmonary artery, or from disease in the substance of the lungs — emphysema, for instance : and if the difficulty be great, the accumu- lation and distension will atfect successively the right auricle, and the vensB cavas ; and then we have, in most cases, general dropsy. So that, I repeat, disease in the heart tends to propagate itself in a direction contrary to that of the circulation. Fur- thermore, if the muscular tissue of the heart be pale, flabby, soft, and weak — as it frequently is in feeble, ill-nourished, cachectic persons-^it will the more readily yield to the centrifugal pressure of the blood it embraces. In this way we may have dila- tation without any hypertrophy. I am anxious that you should in the outset com- prehend the mechanism by which the natural dimensions and relative proportions of different parts of the heart may be altered in disease. One reason why disease of the heart used formerly to be overlooked, was that these natural dimensions and relative proportions were not ascertained or much attended to. It is not easy to form any very precise estimate of the size of a healthy heart. It is commonly held that if the heart be about the same size with the closed fist of the subject, its general dimensions maybe considered as being natural. Bouil- laud, who has taken much pains with this matter, weighing and measuring a great number of different hearts, states that the mean weight of that organ, with the ori- gins of its large vessels, and empty of blood, in adults from twenty-five to sixty years old, is from eight to nine ounces ; that in subjects from sixteen to twenty-five years old, it may be one or two ounces less ; and that, in very large and robust persons, it may rise to ten or eleven ounces. Also, what we should expect, that the weight is less in women than in men. So much for the general bulk of the heart. And we must have some standard whereby to estimate its relative proportions. Every one knows that the walls of the left ventricle are thicker than those of the right. Bouillaud found that the mean thickness of the walls of the left ventricle at its base was seven lines, while that of the right ventricle was two and a half fines. And taking the thickness generally he says that the thickness of the parietes of the right ventricle has not a greater ratio to that of the parietes of the left, than two to five, or even than one to three. So again of the auricles ; he lays it down that the mean thickness of the walls of the left auricle is, to the mean thickness of those of the right, as three to two. He holds, also, that the mean capacity of the right ventricle exceeds, by a little, that of the left ; and that the right auricle is larger than the left. You must always make allowance, in actual cases, for the possible distension of these cavities with blood, beyond the size to which they would have contracted if they had contained no blood. I may add, that the same author declares the rule I just now mentioned, which had been proposed before his researches were instituted — the rule, viz., which makes the bulk of the heaUhy heart equal to the fist of the subject — to be tolerably correct. By keeping in mind these general facts, you will be better able to appreciate the appearances presented by the heart when it is taken from the body to be examined ; but you will recollect that they relate to averages only. Now, having pointed out the modes in which the natural proportions of the heart and of its several parts may be morbidly altered; and given you a rough standard which may enable you to estimate these proportions in the state of health, and the deviations from them in the state of disease ; I will go on to consider the symptom,* by which the altered conditions are accustomed to declare themselves. And it ij with respect to the heart, as with respect to the lungs ; there are general symptoms or signs, and there are physical symptoms or signs : and the information derived from these sources respectively is of variable utility. Neither of them can be safely ne- o-lected ; and it is often found that the indications derived from one of these sets of 664 DISEASES OF THE HEART. symptoms are confirmed or corrected by those collected from the other. I believe it will be best to pursue the same course in both cases, and to speak, in the first place, of the signs that are brought within our notice by the sense of hearing. But, in order that we may comprehend the morbid sounds of the heart, we must first make ourselves acquainted with those that belong to its healthy condition. The heart ma)'' be heard by the ear laid flat against the prascordial region, or through a stethoscope, to beat over a certain space. That space, in ordinary cir- cumstances, corresponds to the inferior half of the sternum, and to the cartilages of the ribs, from the fourth to the seventh, on the left side. The apex of the organ may often be seen to pulsate between the cartilages of the fifth and sixth left ribs ; about two inches below the nipple, and or..^ inch from it towards the sternum. This is the space over which, in the sound state of the heart and lungs, the pulsa- tions of the former are plainly audible. But there are several diseased conditions both of the heart itself, and of the parts around it, which interfere with this rule. In the first place, if the heart be larger than natural, it will be heard to beat over a proportionally larger space. In this way it may come to be heard all over the chest in front ; and behind on the left side of the spine ; and even, in extreme cases, on the right side of the spine. Again, the extent of space over which the heart may be heard to beat will be in- creased in proportion to the thinness of its walls ; and diminished, csetcris paribus, according to the thickness of its walls. So that when the heart is nearly its proper size, if its walls be thin, it will be heard beyond its natural limits ; and if its walls be morbidly thick, i. e., if it be affected with considerable hypertrophy, it will not be heard beyond, nor even to the extent of its natural limits. I will endeavour, pre- sently, to explain the reason of these differences. Again, and this it is of great importance to remember, the heart may be heard far beyond its natural limits, even when it is perfectly healthy, in consequence of the lung between the ear and the heart having become solid, and therefore a better con- ductor of sound : and the solidification may have resulted from hepatization, or from the presence of a number of crude tubercles. The sound of the heart's action will also be conveyed to a distance by the liquid effusion in pleurisy. If we are not aware of these circumstances, we are continually liable to fall into mistakes. The heart is likewise heard more distinctly, and over a space which is compara- tively larger, in children than in adult persons ; and I need scarcely say that it may be heard over a wider extent of the chest whenever its action is augmented by exer- cise, by emotion of mind, or by febrile excitement. The impidse of the heart is another point which you must attend to. In healthy persons who are thin, you may generally feel the stroke which the heart gives to the ribs, by placing your hand on the prcecordial region. In persons who are fat, you often cannot feel the heart at all in this manner. For obvious reasons, it is felt more distinctly, over a larger space, and higher up, while the person is stooping for- wards, or makes a forced expiration ; less distinctly, over a smaller space, and lower down, when he makes a deep inspiration, or is lying on his back. In proportion as the heart is enlarged by disease, it can be felt more extensively : and when there is hypertrophy, the force with which it strikes the parietes of the chest is sometimes extraordinary, and very instructive. You will see the ear and head of the listener distinctly lifted at every pulsation ; sometimes the whole of the patient's body, nay his very bed, is shaken by the strong shock of the heart during its systole. There is no sign of hypertrophy so sure as that afforded by the heart's impulse. You feel, not a smart, quick, and sudden knock, but a steady, heaving, irrepressible swell, which is perfectly characteristic. You may always infer increased thickness of the walls of the organ, when you meet with this regular heaving motion ; and the extent to which the whole heart is enlarged in such cases may be conjectured by the extent of space over which the heaving impulse is perceptible. The sounds which we hear are two. One of them coincides, in point of time, with the impulse; and barely precedes the beat of the radial artery. It happens, therefore, when ih^ ventricles contract; during the systole. It is called, accord ugly, the systolic sound, or the Jirst sound of the heart. The other of the two NATURAL SOUNDS. 665 sounds coincides with the diastole, and is spoken of as the second or the diastolic sound. It takes place at the instant when the heart reverts to that place aftd condi- tion in which it had been prior to the systolic movement. These two sounds occur m quick and regular succession, and then follows an interval of silence, after which the two sounds are repeated ; and so on. The two sounds are not, however, exactly alike. They differ somewhat, both in quality and in duration. The first is a dull, prolonged noise ; the second a shorter and smarter sound, having more of a clacking or flapping character. Attempts have been made to assign the respective duration of each sound, and of the period of re- pose, I confess that I have never succeeded in measuring them satisfactorily in my mind. Probably Dr. C. J. B. Williams' estimate is as near the mark as any. He divides the whole period, from the beginning of one pulsation to the beginning of the next, into five equal parts : and allots two of these to the first sound, one to the second, and the remaining two to the interval of silence. This order of succession /s called the rhythm of the heart : and it may be perverted. Respecting the physical causes of these natural sounds, there have been much /ecent discussion and research. Our time, however, will permit me to do little more than tell you what I believe to be the facts of the matter. And I take, first, the disastolic sound, as being the simpler of the two. It used to be ascribed to the coKtraction of the auricles : but that was quite a mistake. The contraction of the auricles, such as it is, happens immediately before each systole of the ventricles ; whereas the sound in question occurs immediately after it, and is succeeded by the period of silence. This we know from the visible movements of the organ when sxposed in a hving animal. In truth, the auricular contractions are very feeble, and not attended with any appreciable noise. I have no doubt that the second sound is produced mainly, if not altogether, by the sudden shutting of the floodgates placed at the mouths of the two great outlets of the heart. The recoiling blood forces back Jie semilunar valves of the aorta and of the pulmonary artery, as one unfurls an ambrella: and with an audible check as they tighten. There is no other tenable mode of accounting for the sound. Experimenters have contrived, by hooks and vvires, to prevent these valves from unfolding; and then the flapping sound has been converted into a hiss. Disease of the same valves demonstrates the same things; as we shall presently see. Nevertheless, it is both possible and probable that the relapse of the whole organ to its former place may contribute an ingredient towards uiis second sound. The first, or systolic sound, is more complex. Partly it is owing, as I believe, to a similar cause with that which occasions the diastohc sound, viz., the abrupt closure of the orifices of communication between the auricles and ventricles, by the reflux of the blood against the ventricular surfaces of the tricuspid and mitral valves ; panly, sometimes, to the blow of the heart's apex against the ribs ; chiefly, however, it consists of the sound that results from the muscular contraction of the ventricles. The systolic sound commences with the tightening of the walls of the ventricles, including the valves ; and it is prolonged by the muscular noise. You are aware, I dare say, that the vigorous contraction of a large muscle is accompanied by audi- ble sound. If, during the stillness of night, when lying in bed, with your cheek and eai upon the pillow, you set your teeth firmly, you will hear a continuous dull rumbhng, like the noise of carriage-wheels in the street, and evidently caused by tlie action of the masseter and the temporal muscles. Dr. Williams slates that, with the help of a flexible stethoscope, one may hear the voluntary jerking con- traction of his own abdominal muscles ; the sound being as loud as that of the heart's systole, and very Hke it in character. That the systolic sound is essentially due to muscular contraction is proved by the fact, that when a heart is taken from the living thorax and placed upon a table, its contractions (which persist for awhile) arc still attended with a noise similar to the natural first sound, though weaker. Here there is neither collision of the blood, nor valvular reaction, nor impulse against the ribs, to render the experiment ambiguous. If you acknowledge and comprehend this source of sound, you will understand without difficulty why the heart, cscteris paribus, is heard more clearly and exteti- 3f2 666 DISEASES OF THE HEART. sively when its walls are thin, less widely and loudly when they are ihick. "The transition (says Dr. Williams) of a thick muscle from slack to tight can never be so complete and sudden as that of a thin one. Where there are many fibres they choke and muffle each other's vibrations ; hence the sound is dull and prolonged, rather than loud and clear. If we observe the different sounds produced on tight- ening thin silk and thick baize or cloth, we find that the thinness of the silk gives a unity and briefness to the impulse which it receives, and the sound is short and loud ; whilst in the baize the impulse is divided and prolonged in the complexity of the fibres, and the sound is dull and less brief: so, under similar circumstances, a thin ventricle w'ill give a louder, sharper sound than a thick one." The natural sounds which I have been describing are liable to be changed, or modified, by disease. Some of the modifications, indeed, I have adverted to as I went along. But others, of a more striking and extraordinary character, are yet to be explained. Either sound, or both, may be accompanied by a noise, which, in its commonest type, very closely reseml)les that produced by the blowing of a pair of bellows. Four persons out of five, I should think, if they were asked what this sound resembled, when they heard it accompanying each sj'-stolic movement of the heart, would say that it was exactly like the repeated blowing of bellows in an adjoining room. It is called, accordingly, by the French, the "bruit de soufflet ;" and, in homely English, a bellows sound. This is the generic sound. It may be divided into species ; but it is scarcely worth while so to divide it. We are only likely to confuse our notions by over-refinement. So I will only add, that, when this bellows sound is very harsh or rough, persons will tell you that it is more like the noise of a rasp, or a file, or a saw : but all the while it is some kind of bellows sound. These sounds are often denominated murmurs also. Now what is the cause of this singular deviation from the natural noises made by the successive contractions and relaxations of this hollow muscle, the heart ? The whole matter may, I believe, be briefly thus expressed. The blowing sound may be occasioned by any change which alters the due proportion between the chambers of the heart, and their orifices of communication with each other, and with the blood- vessels that respectively enter or leave them ; it may also be occasioned by a preter- natural velocity in the passage of the blood through a healthy and well adjusted heart. Dr. Elliotson, I think it is, who has offered this apposite iUustration of the phenomenon. If the arches of a bridge have a certain relation to the quantity of water in the river, and to the force of the current, the water passes through them quietly, and without any noise. Diminish the size of the arches, and the water begins to go through them with an audible rushing or roaring sound. The very same thing wifl happen if the arches remain unchanged in size, but the quantity of water in the river, and therefore its velocity and force, be augmented by heavy rains. So it is in the heart. If one of its orifices — say the aortic orifice — be narrowed, by disease of the valves, or in any other way, the blood wiU not, as before, glide through it smoothly and without noise, but will yield that sound which we call a bellows sound. So also, if the orifice retain its natural dimensions, but the capacity of the cavity from which the blood is driven be augmented. Nay. the same blowing sound may be produced though the cavities and orifices are all healthy, and duly propor- tioned to each other, if the velocity of the circulating blood be increased beyond a certain measure. If you bear this explanation in mind, it will be found applicable, I think, to almost every case in which there is a blowing sound accompanying the systole of the organ. If, at the same time, the valves over which the blood must pass be rigid, or rough, or even loose and vibrating, those circumstances may modify the blowing sound and render it louder, or lioarser than it would otherwise be, and justify the appellations of bruit de scie, and bruit de rape, with which you will find the French books, and many of our English also, fuU. But this explanation applies to a systolic blowing sound only. What are we to say when there is a similar sound attending the diastolic movement of the heart ? Why a diastolic bellows sound will mostly, if not always, be found to accompany and denote some organic disease affecting the valves of the heart. Thus, if the mitral valve be converted, as it often is, from a loose flapping valve into a bony and NATURAL SOUNDS. 637 rigid unvarying chink, the blood which passes through it from the auriclt, to the ventricle, during the diastole, may (though it seldom does) cause a rushing or blow- ing sound. On the other hand, the reflux of blood through the unshut mitral orifice, during the ventricular contraction, may also be attended with an audible noise ; and thus we have another and not unfrequent source of a systolic murmur. Again, if the aortic valves are imperfect, as they often are, and do not effectually close that vessel, blood will regurgitate through them during the diastole, and produce a bellows sound. That this is the true explanation of the diastolic murmurs, 1 am convinced, both by the observation of disease, and by the results of experiments on animals. In some of Dr. Hope's experiments, which he was good enough to allow me to wit- ness, the short clack of the diastole was at first distinctly audible ; then hooks were introduced, so as to prevent the perfect closure of the sigmoid valves during the diastole, and then the short smart clack was converted into a prolonged bellows murmur; and upon letting them go again, the short smart clack recurred. The presence of a diastohc bellows sound has repeatedly enabled me to foretell some dis- ease of the sigmoid valves, interfering with their proper function — that of forbidding the re-entry of the blood into the ventricle from the aorta ; and what I have thus pre- dicted during life, has been verified by observation after death. Such are the principal sounds, natural and morbid, which are audible to the naked ear, applied to the precordial region, or which may be heard through the stethoscope. But we derive assistance, in respect to cardiac disease, from percus- sion also. It enables us to measure, in some cases, the bulk of the heart ; in others, to ascertain that the pericardium is distended by fluid. In the perfectly healthy state of the viscera of the thorax, the heart is somewhat overlapped by the thin edge of the lungs ; and the sound elicited by percussion over a part of the prsecordial region is intermediate between the hollow sound rendered by lung, and the flat sound yielded by the solid heart. In the centre of the prsecordial region, where the heart is not covered by lung, the sound is decidedly dull. When, however, the heart is enlarged by disease, a larger part of its surface is exposed, and a larger portion of the prsecordial region yields a dull sound on percussion. And when the pericardium is full of liquid, which distends and expands it, you will sometimes find that not less than a third part of the anterior and lateral portion of the left side is quite dull : and it is interesting often to measure, by percussion, the diminution or extension of the limits of the dulness, as the amount of fluid decreases or aucfments. What I stated before, concerning the effect of diflierent positions of the body upon the space over which the healthy beating of the heart may be heard, felt, and some- times seen, applies, ?>tz//a/«s mutandis, io the natural dullness which it causes when the prsecordial region is percussed. This dullness comprehends a space of between one and two square inches, reckoning from the spot where the impulse is felt, toward the left edge of the sternum. The dullness should diminish or disappear, in the supine position, and when a full breath is drawn ; and increase in degree and extent upon a forced expiration, and when the posture is prone. There is another physical sign which is much dwelt upon by Laennec, and which is sometimes very striking. In certain conditions of disease, the hand placed over the situation of the heart perceives a peculiar thrill or vibration accompanying its movements. The sensation conveyed to the hand is really very much like whai Laennec compares it to, viz., that tremor which you feel, when coaxing the back of a cat while it is purring with pleasure. Accordingly he calls this sensation, " fre- missement cataire," the purring thrill. You feel this vibration often when there it, present also a loud and strong bellows sound ; and Dr. Davis is of opinion, that the bruit de soufflet, and the fremissement cataire, constitute, in fact, but one phenomenon, which is rendered evident to the touch by the vibrations communicated to the hand; and to the ear by the vibrations communicated to it through the solid walls of the chest. I know, however, that the fremissement cataire does accompany other sounds, as well as the bellows sounds : sounds of which I have not yet had any occasion to speak, but which I shall make you acquainted with when we come to the subject of pericarditis. And I pass from this general account of the sounds belonging to th'^j 668 PALPITATION. action of the heart, in health and in disease, to consider tlie other symptoms by which ue judge that such disease is present. Among the general symptoms, then, of cardiac disease, some are direct — as pain ; palpitation or excessive action of the heart perceptible by the patient ; irregular or inlernn'ttent action, which the patient may or may not be conscious of: and some are indirect, declaring themselves through the medium of other parts and organs — such are dyspnoea; cough; dropsical accumulations; hemorrhages; various affec- tions of the nervous system, especially an increased and morbid sensibility, what IS usually called nervousness : and some others, which I will cursorily notice as we proceed. I shall take this opportunity of considering, once for all, some of these symptoms ; whether they reall}^ proceed from organic disease of the heart or not : for the deter- mination of the question, whether they do or do not indicate such disease, is often of great moment, and is not always easy. We are not, in general, sensible of the beating of our hearts : but when the pulsa- tions become inordinately forcible, they make themselves felt, and the sensation is, m many cases, a most troublesome and distressing one. Palpitation implies increased force, or increased frequency — or an increase both in force and in frequency — of the contractions of the heart. Every one has experienced palpitation in his own person who has run himself out of breath. The pulsations are sometimes tumultuous also, and irregular, as well as unduly frequent and forcible; but this is by no means al- ways or necessarily the case. There may be great palpitation with perfect regularity of the heart's action. The increased beating not only can be fek internally by the patient, but it may often be heard both by himself and by others. However, we do meet with persons whose hearts throb with excessive violence, without their being at all aware of it. Such cases are always, I believe, cases of disease ; whereas the palpitations that annoy and harass the patient are very often connected with functional disorder only. In egular action of the heart consists in some derangement or discord of its rhythmi- cal movements, and is discovered by the condition of the arterial pulse — by unna- tural fluctuations in the strength, or in the number, of its beatings, or in both. Some- times a few rapid and feeble pulsations occur at uncertain intervals, and are followed by others that are fuller and slower. Sometimes one or more beats are left out, and the next beat, as if to make up for this pause, is unusually strong. The pulse is then said to intermit. The intermissions may be unperceived by the patient him- self; but in general they are attended wi.th a singularly disagreeable fluttering, or trembhng sensation in the breast. The pulse may intermit though the heart does not : the ventricle may now and then contract so faintly as not to propel a wave of blood so far along the artery. Intermission implies irregularity ; but the action may be irregular and disorderly without intermitting. Now, any of these deviations from the natural rhythm and action of the heart alarm people ver}" much, and impress them with a belief that they have some fixed disease of that organ ; and you will cojitinually be appealed to for your opinion on this point. I suppose there are few medical students who have not, at some time or other, ad- mitted into their minds the apprehension that they had disease of the heart ; an apprehension engendered by its occasional palpitation or irregularity. For though there may be palpitation wuhout irregularity, yet it is practically convenient to con- sider the two together. These deviations certainly belong both to organic disease and to mere functional disorder of the heart; but I repeat, that in a great number, nay, in a great majority, of the cases in which they so distress and alarm the patient as to lead him or her to complain of them, tliey are unconnected with any change of structure ; and this it is of much importance that you should be aware of. Palpitation of the heart, and intermission or irregularity of the pulse, are often dependent upon some disordered condition of the stomach, and will cease at once when that disorder is rectified. Tt is curious that this may happen although the gas- tric afTection does not manifest itself by any other symptom : and it is curious, too, liow slight a cause may suffice to produce the irregular action. A friend of mine, VENOUS MURMURS. 669 a barrister, used to be very anxious about himself, because a fluttering sensation fre- quently occurred at his heart ; an intermission of one or two beats, and then a vio- lent throb when the organ again resumed its play. This is a sensation very familiar to myself, and probably most persons have occasionally experienced it. However, It happened so often to the gentleman I speak of, that it made him very unhappy. He persuaded himself that he had disease of the heart, and that he should some day suddenly drop down dead. But there was no other symptom of cardiac disease direct or indirect, general or physical. He was accordingly told that the intermis- sion depended upon some fault in his digestive organs ; and he was advised to leave off different articles of food and drink in succession, in order to discover whether any one thing in particular offended the stomach, and gave rise to the symptom. He began by abstaining from tea, which he had been in the habit of drinking in consi- derable quantity ; and thereupon the fluttering of the heart ceased. After a while he took to tea again, and then the fluttering returned. He repeated the experiment many times, and always with the same result, till at length his mind was satisfied ; and by renouncing tea altogether he got rid of his palpitation and of his apprehen- sions. I mention this instance, because it came within my own cognizance ; but it is only a sample of many such, and tea is frequently found to be the disturbing substance. I must caution you, however, against the mistake, which is often made, of infer- ring that the heart is free from orgaiixfi change because its irregular movements are accompanied by dyspeptic symptoms. Structural disease of that organ is very apt to derange the digestive functions. You will commonly find that patients who labour under such disease are exceeoingly liable to flatulence of the stomach ; and free eructation of the gas which plagued them mitigates wonderfully the cardiac dis- tress. It does so, no doubt, by relieving the diaphragm from that upward pressure which embarrassed the motions of the heart. We judge that palpitations and irregularities are merely symptomatic conse- quences of gastric disorder, when they occur occasionally only ; when the rhj'^thm of the heart is perfect during the intervals ; and when we fail to discover any other pl^sical or general signs that its texture has undergone alteration. Besides these overstrong or irregular movements, Avhich are symptomatic of dis- order of the stomach, and are remedied by correcting that disorder, there are pal- pitations of a purely nervous kind. *I mean, that they depend upon a peculiar and highly sensitive condition of the nervous system ; which condition is itself dependent, in general, upon a particular state of the vascular system. Persons of a "movable" constitution, whether male or female, are subject to these palpitations : but especially young women ; and, of these, such as are pale, exsanguine, hysterical, in whom the menstrual functions are deficient, or excessive, or somehow unnatural. Ansemia, if not a constant, is certainly a frequent and most remarkable feature of this nervous state. The blood is aqueous ; poor in fibrin, and in red particles. The age, and frequently the sex, of the patient form leading points in the diagnosis. Nervous palpitations are apt to come on when the patient is quite at rest : palpitations that result from organic disease are, on the contrary, always mitigated by repose. The occurrence of palpitations in the night, however, is but an equivocal circumstance, for nervous persons who dream, awake often with palpitation ; and the recumbent posture generally excites or aggravates the palpitations that are organic. Neither, m forming our diagnosis, can we trust entirely to the presence or absence of physi- cal signs. The heaving impulse of hypertrophy is indeed wanting; but, as I told you formerly, the short abrupt knock of chlorotic palpitation is often attended with a bellows sound. The weak and flabby muscle dilates (I fancy), and the natural proportion between the chamber and its outlet is for a time destroyed. The sound may partly depend upon the thinness of the blood in such patients ; and this reminds me of another diagnostic clue which you should be acquainted with. In nervous, susceptible persons, especially if they exhibit the pallor of anaemia, very curious noises are often audible, by means of the stethoscope, in the neck. Continuous rush- ing or roaring sounds, very like those which are to be heard in shells, and whicn poets feign, and the vulgar beheve, to be the noise of the distant sea 670 DISEASES OF THE HEART. Shake one, and it awakens ; then apply Its polished lips to your attentive ear, And it remembers its august abodes, And murmurs as the ocean murmured there. Sometimes the sound is more like the hum of a gnat, or the sighing of the wjnd through a crevice. Dr. Hope very truly states that it may be imitated by a pro- longed whispering pronunciation of the syllable ivho. Bouillaud, from its resem- blance to the whizzing of a well-known toy, calls it the " bruit de diable." He sup- posed this singular sound to reside in the arteries of the neck ; but it is quite distinct from the true arterial bellows murmur; and it has been clearly shown (tirst by Dr. Ogier Ward, of Birmingham,) that it is produced by the descent of the attenuated blood through the great cervical veins. The sound, though continuous, has often a marked and regular increase, or swell, which keeps time with the heart's systole, and is believed to depend upon the pulsating pressure of the contiguous artery. It is best heard on the right side of the neck, just above the clavicle, and just behind the posterior edge of the sterno-mastoid muscle. You must take care not to pro duce these sounds, as you easily may, by pressure with the stethoscope. So, also, you may suspend them at your pleasure, by pressing, above the stethoscope, upon the track of the veins, so as to stop the current of blood through them, without arresting the pulsation of the arteries. This proves that the murmurs are venous. I have no leisure to go more into particulars concerning these sounds ; but when you meet with them, concurring with cardiac palpitations, in a young, nervous, anasmic subject, the palpitations, ninety-nine times in a hundred, will turn out to be simply functional — independent of any organic disease. No doubt there may be co-existing change of structure ; but that is a rare exception, and, when it does occur, the signs proper to structural disease will be present, and will betray it. Now, these palpitations, and these musical or rushing sounds in the jugular veins, are to be cured by remedying the state of the blood. And the remedies are prepa- rations of steel, aloetic purgatives, animal food, the cold shower-bath, and exercise short of producing great fatigue, in pure air. I have further to remark, with respect to intermissions of the heart's action, aftd therefore of the pulse at the wrist, that they are frequently connected, both in health and in disease, with feebleness, and also with unusual slowness, of pulsation. So that a slow pulse, which is likewise feeble, is often converted into an intermitting pulse by depletion ; by blood-letting, for example, or by an active purgative ; and the intermittence may be removed again by a stimulant. I mention this now, be- cause there is another and very different state of disease, in which the pulse is apt to intermit. 1 mean when there is plethora capitis, and cerebral mischief is present or impending. But then the pulse will be full and strong, and labouring. In these cases, a stimulant treatment would of course be injurious ; while blood-letting, which would cause the other form of intermission, is the remedy of this. Some assistance in determining between organic disease and mere functional dis- order of the heart, may perhaps be derived from observing the position of the patient. It is stated that when there is mere nervous palpitation, the patient lies as well, and perhaps better, on the left side than otherwise ; whereas, when the heart is actually diseased, the decubitus on the right side is more comfortable than that on the left. If there be any tenderness of the heart, or of its enveloping membrane, the posture on the right side is supposed to be the easiest, because the heart is further removed from the ribs, and impinges upon them during the systole with less force. How- ever, no great stress can be laid upon this symptom. Of the remaining general symptoms of heart-disease there is not much to be said. Dy!>pncea and cough are indirect symptoms declared through the lungs, between which and the heart there is a close and obvious reciprocal influence. But dyspnoea und cough are direct symptoms of pulmonary disease ; and even of pulmonary disease they scarcely help the precise diagnosis. That disease of the heart may materially alter the quantity of blood that is sent to, or transmitted from the lungs, is too plain V> require any formal proof; and where the quantity of blood in the lungs is affected, I DISEASES OF THE HEART. 671 the quantity of air necessary to ventilate that blood must vary : in other words, dysp- noea must ensue. Hcemoptysis is also an equivocal symptom. One very common effect of cardiac disease is an impeded and sluggish trans mission of venous blood from the abdominal viscera. Hence congestions of various parts, and especially of the liver, which enlarges and grows tender; and the biliary secretion and functions are deranged. These symptoms are a fruitful source of mistake, leading the unwary practitioner into the belief that the whole of his patient's malady is hepatic ; whom he comforts accordingly with the assurance that " it is all liver." The circulation through the brain is also apt to be much disturbed in heart dis- eases ; and to this circumstance we must attribute the headaches and giddiness that often accompany them ; the dread and causeless apprehension which such patients frequently exhibit ; the cowardice and irritability which disease of the heart engen- ders in men who previously were intrepid, and of strong and firm nerves ; also that propensity to dreaming, and especially to distressful and frightening dreams, so com- monly observable in them ; and the sudden starting from sleep in horror and alarm. The relations that exist between apoplexy and organic disease of the heart, were full}'- discussed in a former lecture. One of the most common indirect symptoms of cardiac disease is dropsy; yet, sometimes, the disease of the heart may continue long, and even prove fatal, without giving rise to any dropsy. It will produce that symptom, or not, according as it leads to venous congestion or not. Hence, dropsy is more particularly connected with dilatation and attenuation of the right cavities of the heart. But these are points to which I must revert. Having thus run over, gentlemen, the morbid changes to which the heart, as a muscular organ, is liable ; the alterations of thickness in its walls, and of capacity in its chambers, and the derangements of the natural relations between the several cliambers and their orifices ; having considered, also, in a brief and cursory man- ner, the sounds which the heart gives out in its different movements during health, and the modifications to which these sounds are subject in disease ; and having, moreover, passed in revietv the general symptoms which frequently display them- selves in connection with cardiac disease, we shall be the better prepared, I hope, to investigate, when we next meet, some of the specific diseases of that important organ. LECTURE LX. Diseases affecting the muscular texture of the heart ; and their treatment. Changes to which the valves of the heart are subject. Effects, and diagnosis of thos« changes. .Angina pectoris. I KNOW not how I can so well put you in possession of what I know, or think cou cerning particular structural diseases of the heart, as by taking them in succession, and offering a sort of running commentary upon them. The mechanism of those structural changes, and the altered sounds, and the other physical signs, arising out of them, I endeavoured to explain in the last lecture. Bear in mind that in this place I can do no more than draw broad outhnes. Simple hypertrophy of the left ventricle. This sometimes occurs when we can discover no mechanical obstacle to the passage of the blood out of the ventricle, which might account for it : none, I mean, by the closest scrutiny made even after death. Is it then possible that this change may be brought about by physical causes which are not perniarient, and have no place within the body : such as undue action of the organ for a length of time, in consequence of habitual bodily exertion ? A runner, for example, vve may conceive to keep his heart beating with a degree of force and frequency beyond what is natural, for the greater part of the day; and thai 672 DISEASES OF THE HEART. for many days, or weeks together. Again, can simple hypertrophy grow out of that excessive action of the heart which may be kept up, day after day, fbr a long period by protracted mental emotion? It is difficult to answer these questions. But I pre- sume that causes of this kind — that any cause, in short, which im.plied long-continued uicrease in the function of the organ, — would suffice to generate hypertrophy. What 's certain, however, is that such causes seldom do act with sufficient intensity and constancy to produce these effects: and simple hypertrophy of the left ventricle, with no ph3'sical obstruction to the flow of blood through the heart, and no impedi- ment to the free play of the organ, is rare. We ascertain its existence when it does exist, first, b)"- the account which the patient gives of himself. He has a sensation of beating of his heart, which he ought not to have ; he feels it, and hears it beating as he lies awake in bed ; or even at other times when he is at rest. The pulsations are regular. Hypertrophy has no tendency in itself to cause the pulse to intermit or to become irregular. There is no marked dyspnoea : the circulation of the blood through the lungs is not much af- fected by this akeration of the left ventricle ; they are in fact protected by the mitral valve : there is seldom any dropsy : but the arterial circulation being forced, there is a tendency to active congestion in the capillary vessels. As there is no mechanical obstacle to bridle the excessive power of the muscle, the pulse is full and strong; the face is florid ; the patient is liable to headache, to bleeding from the nose, to active hemorrhage, and to local inflammation. If you listen to the heart in such a case, you find that the systolic sound is less loud and clear than natural. It is not heard beyond the prtecordial region, nor even perhaps over its whole extent : but there is no bel- lows sound. And if you place your hand upon the left breast, you feel that steady, swelling, incontrollable impulsion, which I spoke of in the last lecture as the surest sign that I am acquainted with, of hypertrophy. Sometimes the prsecordial region is manifestly bulging and prominent. If I were to preach for an hour concerning the treatment of such cases, I could say no more than this : that they require perfect quiet of mind and body ; undeviating abstinence ; in short, the strict observance of the antiphlogistic regimen as formerly described ; and some of the antiphlogistic remedies : particularly moderate topical bleedings, often repeated ; v\'ith a close attention to the functions of the digestive organs. These are the cases in which, if any, we may expect to cure hypertrophy. If simple hypertrophy of the left ventricle be rare, hypertrophy of the same chamber from a mechanical obstacle, or from some hindrance to the easy working of the hydraulic machine, is exceedingly common. What difl^erence, then, let ua inquire, is made in the symptoms, in the treatment, and in the prospect of recovery, by the presence of a physical impediment, out of which the hypertrophy has grown ? The mechanical impediment will frequently signify its existence, by causing some unnatural sound : a systolic bellows sound most commonly, which is audible over the sternum, along the course of the aorta. And the mechanical impediment will tend to cause faltering of the pulse; but generally the hypertrophy corrects that tendency. So, on the other hand, the mechanical obstacle corrects the tendency of the hypertrophy to cause active capillary congestion : and when the obstacle is con- siderable, it will prevent the pulse from being so full and strong as in the former case. If to the physical signs of hypertrophy of the left ventricle there be added a bellows sound, and a disproportionate smallness and feebleness of the pulse at the wrist, we may safely conclude that there is some impediment to the escape of the blood from the left ventricle into the aorta ; and that this impediment has given occasion to the hypertrophy. Now, in this case, the hypertrophy is really an endeavour towards health. The mcreased power of the ventricle compensates for the bar which is opposed to the current of the blood. The blood would not be able to goon without the hypertrophy. There would ensue a tendency to stagnation in the circulation, a faltering pulse, im- perfect arterialization of the blood, blue cheeks and lips, dyspncea, dropsy ; but the augmentation of bulk and force in the impelling muscle obviates this ; obviates it at least for a while : puts off" the evil day to a distance. Since this is the case, and since rt'e have no means of removing the mechanical impediment, we should be mad DISEASES OF THE HEART. 673 to desire the cure of the hypertrophy, which is to a certain degree a remedy for the impediment; nor indeed could we cure it if we would. But we have to endeavour to keep it within due bounds. If the beating be troublesome to the patient, we may alleviate that symptom, and check what there may be unnecessarily active in the contractions of the morbid chamber, by abstracting blood from the pra:!Cordia by leeches ; and by sohciting the action of the kidneys, by means of cooling diuretics, among which small doses of digitalis may find an appropriate place. The labouring action of the heart is sometimes calmed by the application of a belladonna plaster. In this variety, also, of the disease, it is of primary importance that no undue efforts of the body be made, and that the patient be protected, as much as possible, against all causes of mental emotion ; that scrupulous temperance be enforced ; and that all the functions of the body be carefully watched and regulated. These are not cases in which we can look for recovery: but they are cases which bad management and imprudent habits may hurry on to a fatal termination; and which judicious treatment and a well-regulated course of living may render tolerable, and carry forwards for a considerable period. Under the same condition of mechanical impediment, we oftener have eccentric hypertrophy of the left ventricle ; hypertrophy, i. e., with dilatation. Of course the bulk of the whole organ is augmented by both of those conditions ; and sometimes it becomes enormous, as big as that of a bullock. The symptoms will differ somewhat, according as the hypertrophy, or the dilatation preponderates, and tiierefore it will be as well to state here what are the symptoms of simply dilated ventricles. They are a diminished imptdse of the heart's action; and therewith a clearer sound than IS natural. The first sound approximates to that of the heart's diastole ; to the clacking second sound, and it is heard extensively. There is more or less tendency to fluttering palpitations and irregularities of the pulse, which is usually weak and small ; to faintness and debility, and to coldness of the extremities: and when the right ventricle is dilated, there are some other symptoms which I shall notice presently. Now, I say, there will be a mixture or modification of the symptoms, when the left ventricle is both dilated and hypertrophic. The dilatation will aid the mechanical impediment in giving a tendency to irregularity and intermission of the pulse ; and the hypertrophy will tend to rectify that disposition. And we must trim our man- agement of such cases accordingly. If the pulse flutters, we cautiously administer tonics, or stimulants : if it is steady, and the signs that belong to simple hypertro- phy predominate, and are excessive and troublesome, we must starve the patient, take blood from his side, purge him, and give him diuretics; but at all times keep him as tranquil as we can. Simple hypertrophy of the right ventricle is not a common disease. When it occurs, it results from some actual or virtual impediment to the passage of the blood from the ventricle into the lungs. The most extreme instance of it that I ever saw, was in the heart of a medical friend's son, who died at the age of seventeen ; having been for many years affected with the morbus cseruleus as it has been called, i. e., an habitual blue state of the cheeks, lips, and tongue, finger-nails, and the skin generally ; attended with shortness of breath, and augmented by every kind of ex- ertion. It is seldom that persons thus affected live so long as this poor boy did. The heart, as is usual under such circumstances, was malformed. The septum between the ventricles was imperfect at its upper part ; and the aorta belonged as much to the one ventricle as to the other. The pulmonary artery would not admit a goose-quill ; the walls of the right ventricle were as thick as those of the left. Authors tell us that hypertrophy of the right ventricle of the heart is a cause of pulmonary apoplexy. I explained to you in a former lecture why I cannot believe in this doctrine. In the first place I say that the increased thickness and strength of the walls of that chamber supply a measure of the difficulty, and not of they'ree- dom and force, with which the blood is conveyed to the lungs. In the second place pulmonary apoplexy does not result from rupture of vessels by the vis a tergo, nor in general from rupture of vessels at all ; and therefore is a quite different lesion from cerebral appoplexy. It is simply an accident of pulmonary hemorrhage. Ana 43 3o C74 DISEASES OF THE HEART. lastly, I never met with pulmonary apoplexy coincident with mere hypertrophy of the right ventricle. The right ventricle lies on this side the lungs, in the order of the circulation ; and accordingly, following the rule I mentioned in the last lec- ture, its morbid states are for the most part effects, and not causes of pulmonary disease. The commonest affection of the right ventricle is dilatation without any increase of thickness, but with attenuation even, of its muscular parieles. This is in general the consequence oi long standing pulmonary disease ; which has prevented the easy passage of the blood out of the right ventricle. It is often, or ultimately attended with dilatation of the right auricle, and of the jugular veins, which stand out in relief from the sides of the neck, and exhibit an undulating sort of pulsation, pro- duced by the regurgitation of a part of the blood, whenever the ventricle contracts. I have taken from the neck of a person dead of such disease, veins into which I could pass my forelinger. With all this there is a fluttering action of the heart, an irregular pulse, great distress and shortness of breathing, a dusky skin, and blueness of the countenance, which is bloated and anxious: and a tendency to delirium and drowsiness ; while, sooner or later, the whole areolar tissue of the body becomes charged with accumulated serum. Some degree of this may now and then be noticed towards the fatal close of phthisis. Much oftener it accompanies the latter periods of extensive pulmonary emphysema. The same condition of the right cham- bers, producing the same afflictive consequences, is the very frequent sequel of organic changes that originated in the left side of the heart. Disease, such as I am now describing, in its advanced stages especially, is diiScult to treat. If you stimulate, you run the risk of increasing the patient's distress ; if you deplete, you incur the hazard of producing fatal syncope, of bringing the heart to a pause from which it is never able to recover. Here, again, you must try lo keep the kidneys active ; you must enjoin that, as far as may be possible, all causes of agitation or hurry, everj'thing which has previously been found prejudicial to the patient, may be sedulously warded off. I have found more benefit in these cases from steel cautiously employed, than from any other drug. Without forcing the heart's action, it appears to have the effect of increasing the tone of its muscle ; which it thus enables, ybr a lime, to compete more successfully with the load it has to carry, and the impediment which it cannot overcome. We can do no more in such cases than palliate. Sometimes the parietes of one or of the other ventricle becomes so thin — either in consequence of dilatation with tenuity, or through ulceration of the muscular tissue- as to bulge out into a pouch, or even to crack ; in which case the patient almost always dies suddenly, the motion of the organ being stopped and strangled by the effusion of blood into the pericardium ; so that to die of a broken heart, is not a mere metaphor. A clergj'man from the country, whom I previously knew, called at my house in the autunm, and waited some time in my absence ; but went away at last without seeing me : and after consulting Dr. James Johnson, set out for his home, ten miles on the other side of Colchester. He had been unwell for some time ; had suffered occasional attacks of dyspnoea; and was unusually nervous and irritable. He must have been conscious of some severe distress, for he was extremely anxious to get home, and bribed the post-boys to drive fast. As soon as he reached his own house, he took some supper, and went to bed, apparently comfortable. Half an hour afterwards one of his servants went to him, and found, him asleep. At the expiration of another half-hour, he was again visited, and was then a corpse. Among other changes, the pericardium was full of blood, which had escaped from the heart through a rent in the left ventricle, large enough to admit one's finger. That part of the ventricle which surrounded the laceration, was unnaturally thin, to the extent of a crown-piece. There are several specimens of rupture of the left ventricle in the Museum at St. Bartholomew's Hospital. George II. died of rupture of the heart. It is curious enough that a Duchess of Brunswick, of the same family with George II., died of the same disease. In her case an ulcer penetrated the parietes of the 'ight ventricle, which in other respects was healtny. In most instances, the rupture has taken place in the left ventricle. The same chamber is also liable to aneurisma . DISEASES OF THE HEART. that is, to partial distension of its walls into lateral cells or pouches. This form of disease has not been met with in the right ventricle. Hypertrophy — or dilatation — or dilatation and hypertrophy — may affect, in their various degrees and combinations, one chamber only of the heart ; or several at the same time ; or all of them together. It would be vain to attempt to represent, in verbal description, these complicated changes. Enough, I trust, has been said, to enable you to unravel them when they come before you ; and to ascertain, with sut'ficient exactness, the general indications which they severally furnish, and the plan of treatment which they require. You will often find the muscular substance of the heart pale, soft, and flabby; easily broken down, or penetrated by pressure. This may occur with general de- bihty and looseness of tissue ; it sometimes accompanies a plentiful deposit of fat about the organ : and it is supposed to be sometimes also a consequence of inflam- mation affecting the muscle. Walls thus soft are likely to yield under pressure ; but I know of no particular symptom by which we can detect such a state of softening. The morbid conditions of which I have been speaking, involving the muscular substance of the heart, spring very frequently indeed from pre-existing morbid con- ditions of the membrane lining the heart, or of the membrane investing the heart. It is necessary therefore, in the next place, to inquire into the nature and history of these morbid changes : and I will first request your attention to the diseases of the Jning membrane. The investing membrane is familiar to you as the pericardium. Of late years, since the diseased states of the internal membrane have been more studied and understood than they formerly were, it has been called the endocardium: a convenient enough name, which may occasionally spare us circumlocution. Now, certain parts of the endocardium are much more obnoxious to disease than others : those parts which enter into the fabric of the valves and orifices of the organ. The membrane is here in close contact with a dense fibrous tissue; and participates in the changes to which that tissue is subject. And it is an important fact, that the valves and orifices of the left side of the heart are much more frequently affected with disease than those of the right side. I have adverted to this fact before. What is the prevaiHng cause of it I cannot tell ; but it seems to be a portion of a more general fact ; namely, that the arteries are more liable to chronic morbid changes than the veins. Some explain the difference by alleging that the left side of the heart has the heavier task to accomplish. But nature seldom executes her purposes so clumsily, as not to adjust the strength of her machinery to the labour it is destined to perform. Others remark that fibrous tissue is more abundant, and therefore the changes proper to that tissue are more numerous and extensive on the left side. And this may be the true explanation. Others, again, have conjectured that the arterial blood is more irritating than the venous. But there is no evidence of this : and it is better to content ourselves with noticing the fact, without attempting to account for it by mere gratuitous hypothesis. You are not, however, to suppose that the right side is exempt from valvular dis- ease. When there is much change on the left, we often find a less degree of the Fame kind of change upon the right. The valves of the pulmonary artery are, per- haps, the least frequently of all the valves found otherwise than healthy. Many of the alterations that take place in the internal lining of the heart result, apparently, from inflammation, which causes a deposit of lymph upon or beneath the serous membrane. The valves are apt to lose their thinness, and transparency, and pliancy. They become thick, stiff, puckered, curled up, or glued to each other, or to the opposite walls of the channel. On the other hand, quite independently of inflammation, they may become morbidly thin, riddled with holes, and even rent asunder. What are called vegetations or excrescences may also project from them, very much resembling warts. Or they may be converted wholly or partly into bone. Alterations of some kind or another are very frequent in the semilunar valves of the aorta. When they are of such a nature as to diminish the orifice during the systole, they commonly occasion a systolic bellows sound. When the diseased 676 DISEASES OF THE HEART. valves offer no obstruction to the exit of blood from the ventricle, but do not close again immediately afterwxirds, so as effectually to prevent the reflux of that fluid from the aorta, they commonly give rise to a diastolic bellows sound. When both these defects of function occur, there is often a double bellows sound ; a sawing alternate noise ; one murmur during the systole, another, distinguishable in tone and quality, as well as in time, during the diastole. These sounds are conveyed along the tube in which they are formed, and are therefore most audible in the track of the aorta, as it leaves the heart. If the sound be diastolic, it will take the place of the smart clack of the second sound of the heart, or perhaps succeed it. Sometimes the new sound is very loud and curious. I had a patient in the hospital last year, in whom this diastolic sound was, in character and intensity, like the cooing of a pigeon. The patient could plainly hear it ; nay, it could be heard by a person standing near him, but not touching his body, even with a stethoscope. In that in- stance we found one of the aortic valves irregularly thickened, with its free edge loose and flapping, and unable to fulfil its function of closing the aperture. During the diastole it was retroverted, and vibrated in the regurgitating stream of blood ; and thus, no doubt, the musical note, heard alternately with the first sound, was produced. In March, 1837, I heard in a man (Henry Milton) who was under Dr. Latham's care in St. Bartholomew's Hospital, and who had had acute rheumatism, a very shrill diastolic sound, like the repeated whining of an imprisoned puppy-dog wishing to be released. This remarkable sound was audible by means of the stetho- scope, even in the radial artery. The patient died at last in St. George's Hospital, and his case is mentioned in Dr. Hope's book on the heart. One of the aortic valves was torn downwards to some distance from its edge, and formed a flap, which was perforated by a round hole. I need not again point out to you the manner in which such disease of these semi- lunar valves tends to produce hypertrophy and dilatation of the left ventricle. The niitrul valve is often thickened ; and it is particularly subject, more so even than the aortic valves, to ossification. And the effects of the ossification are to pre- vent its closing the auricular orifice durmg the systole ; and to prevent its lying- flat against the walls of the ventricle, and allowing a free passage of the blood out of the left auricle, during the diastole. The orifice is often converted into an unvarying oval slit, with puckered edges, and resembling a button-hole ; or the valve projects, like a thimble of bone, into the left ventricle. And it is remarkable how small the chink, which is thus permanent, may be, and yet life go on. The heart having been taken out of the body, and the auricle filled with water, I have seen the water pass into the ventricle, by its gravity, stillathn ; drop by drop. Let me just remind you, that the direct and necessary consequence of constriction of the mitral orifice, is an accumulation of blood behind it ; i. e., in the left auricle, in the pulmonary veins, in the lungs. Hence so much mechanical congestion, that the blood bursts at length through the bronchial membrane ; hemorrhage, slow or copious, ensues from the air-passages ; and pidmonary apoplexy is formed. In extreme cases, where the mischief is chiefly confined to that valve, the blood necessarily reaches the ventricle in a penurious manner ; that chamber contracts un- steadily and irregularly ; and its cavity sometimes diminishes. This I think I have seen. But far more commonly there is disease of the aortic valves also; and the condition of the left ventricle is that of hypertrophy with dilatation. When there is a permanent chink in place of the limber valve, there may be a double bruit. The first heard during the systole, and produced by the regurgitation of blood from the ventricle into the auricle, through the rigid slit. This is common. The second accompanying the diastole, and resulting from the mechanical impedi- uient to the free passage of the blood from the auricle into the ventricle. This is uncommon. The constriction must be great for the diastolic murmur to occur a* all : and when it does occur, it is faint ; from the comparative feebleness (I presume) of the auricular contractions. The fonn and the consistence of the altered valves being the same, no difference whatever in the sounds, or in the general symptoms, will arise from the particulai nature of the changes. It will, 1 mean, make no difference whether the obstacle to I DISEASES OF THE HEART. 677 rhe flowing blood, or the imperfect closure of the orifice, depends upon mere thicken- ing of the valve by cartilaginous deposition, or upon ossification, or upon wart-like vegetations. These last may be found upon any of the valves, but, like other morbid states, they are less frequent on the right than on the left side of the heart • «nd they are most common of all on the aortic valves. Ossification — the deposition of the phosphate of lime — is almost confined, I believe, to the left side. I never saw the tricuspid valve, or the semilunar valves of the pulmonary artery, converted into bone. The warts, or w^art-like excrescences, which are so often found upon the valves of the heart, are very curious things. Sometimes they are separate, like rows of beads. Sometimes several appear to spring from a common base, which spreads out so as to exhibit a cauliflower appearance. And occasionally they hang in long strings from the valve into the adjoining chamber of the heart. In a patient of Dr. Hawkins', I saw a cylindrical excrescence of this kind which measured an inch in length. The valves presented sht-like perforations ; and from the edge of one of these slits in the mitral valve, this long vegetation dangled into the ventricle. The whole of the valves of the aorta were covered, on their ventricular surface, with similar but shorter excrescences. They vary much, these vegetations, in consistence. Sometimes they are soft, easily crushed, and capable of being readily detached from the smooth surface of the valve. Others are more firm, and yet separable from the valve without injury to it. Others, again, are so adherent, so rooted into the valves, that they can be removed only by tearing or cutting them off. They are found sometimes on the free edge of the valves ; sometimes on their surface, or even on the inner membrane of one of the chambers, especially of the left auricle. Much difference of opinion has prevailed respecting the nature and origin of these singular appearances. It was a common notion among the French, at one time, that they were really, what they so much resemble, venereal warts. What seems to be certain is, that they are somehow connected with inflammation of the internal lining of the heart ; and of that which covers the valves in particular. But, then, are they lymph poured out from the inflamed membrane ? or are they fibrin deposited from the blood upon an inflamed membrane 1 It is probable that the last is, sometimes at least, the true explanation of their origin. You know, that when the membrane lining a vein becomes inflamed, the blood in contact Avith it has a strong tendency to coagulate upon it, and to adhere to it. The fleshy excrescences found on the valves are often attached to the edges of slits in the valve : the broken surface having pro- bably been the especial seat of inflammation. When then the formation of vegeta- tions is recent, they are very soft and frangible. But the most interesting fact that I am acquainted with, in evidence of the mode in which these little projections arise, is one that accidentally came to light in one of Dr. Hope's experiments upon an ass, at which I was present. The aortic valves had been held back by a wire passed into the vessel, with the view of ascertaining the physical cause of the second sound. The animal was previously rendered insensible by a narcotic poison ; and the circu- lation was kept up — languidly, however, towards the last — by artificial respiration. Upon the final cessation of the heart's motions, the organ was removed from the body and exammed : and the valve that had been mechanically irritated by the wire, was found studded with these little wart-like appearances, which were so soft as to admit of being readily brushed off from the subjacent membrane. Here the deposit took place after the death of the animal, and while some of the functions of organic hfe alone were kept up by the artificial breathing. There are still some curious circumstances to be mentioned, connected, in some instances, with the formation of these warty vegetations. I shall not, however, enter upon them in the present lecture : but when I speak, at our next meeting, of rheu matic inflammation of the heart and its membranes. Any or all of the lesions that I have been describing may and must lead, at lengtli, according to their places and magnitude, to some of those changes in the actual and relative dimensions of the heart that were considered in the last lecture. They obstruct the stream of blood when moving in its natural course, and when its passage 3g3 678 DISEASES OF THE HEART. ought to be free ; or they allow of its refluent course, when it ought to be effectually opposed : and the necessary results, in either case, are dilatation of one or more of the chambers of the heart, with thickening, or with attenuation, as the case may be, of its walls. I have already spoken of the symptoms, physical and general, to which these secondary changes give rise ; and of the treatment which they admit and require. There being valvular disease, and that valvular disease giving rise to a bellows sound, can we distinguish the particular valve affected ? Generally, we can. Our skill in diagnosis outruns here, as indeed it too often does, our skill to cure. A few simple rules and considerations enable us, in most cases, to satisfy our natural curi- osity to penetrate the exact conditions even of changes that are incapable of repair. These rules relate chiefly to the time when the murmur is heard ; to the direction in which it is most audible ; and to the state of the arterial pulse. When a bellows sound accompanies the systole, it must be caused by a current passing out of a ventricle. But serious disease of the valves, sufficient to occasion a murmur, on the right side of the heart, is very rare. In nineteen cases out of twenty, valvular murmurs belong to the left side; so that practically the distinction lies, almost always, between two orifices, the mitral and the aortic, the inlet and the outlet of the left ventricle. The natural inlet has become an outlet also: or the natural outlet is obstructed. Now if the sound be heard at the base of the heart, and along the track of the thoracic aorta, up towards the right clavicle, and even in the carotids ; and if it be less audible towards the apex, and if the pulse be steady and regular, the mischief is seated in the semilunar valves of the aorta : there is some obstacle which produces a ripple in the onward stream of the blood. On the other hand, if the pulse be irregular, and if the sound be heard better towards the apex of the organ, on the left, it is owing to regurgitation through a dis- eased mitral valve. Such regurgitation is often attended with a purring thrill. When, what scarcely ever happens, the sound does result from injury of the semilunar valves of the pulmonary artery, it is heard plainest in the track of that vessel, up towards the left clavicle. So also a murmur produced by change in the tricuspid valve would be loudest towards the apex, on the right. The arterial pulse, for obvious reasons, is but little influenced by disease affecting the orifices of the right heart. Again, if the morbid sound be diastolic, it accompanies the entrance of blood into a ventricle ; and for similar reasons as before, the fault is most probably in the left ventricle. It may be owing to the direct, but impeded, passage of the blood from the left auricle through a narrowed mitral orifice : yet this very seldom occasions any audible noise. Or the diastolic murmur may proceed from regurgitation through the defective aortic valves : the natural outlet having become an inlet also : and this is exceedingly common. We attend, as before, to the situation and the track in which the sound is the loudest. We listen also for the smart clack of the natural second sound ; and if it is not to be heard, or is verj' indistinct, we have, in that cir- cumstance, corroborative evidence of an imperfect aortic flood-gate. Moreover, we are again assisted by the pulse. The pulse of aortic regurgitation is very striking and peculiar : sudden, like the blow of a hammer, without any prolonged swell of the artery. It always reminds me of the well known chemical toy, formed by including a small quantity of liquid in a glass tube, exhausted of air, and hermeti- cally sealed. On reversing the tube, the liquid falls from one end of it to the other with a hard short knock, as if it were a mass of lead. The sensation given to the finger by the pulse, when there is much regurgitation through the aortic valves, is very similar to this. It is as if successive balls of blood were suddenly shot along under the finger. Dr. Hope calls this pulse a jerking pulse ; the pulse of unfilled arteries. And this abrupt pulse makes itself visible in the arteries : the wave of blood lifts, and moves, and sometimes contorts the vessel. When this kind of pulse occurs with a diastolic bellows sound heard in the track of the aorta, and the short clack of the second sound is absent or diminished, you may be quite sure that the aortic orifice is patulous during the diastole. The reflux of the blood, when the patency is great, is strong enough sometimes to produce a palpable shock or iog. DISEASES OF THE HEART. . 679 called the diastolic impulse. And this refilling of the ventricle from the artery may even provoke it to a supernumerary contraction. In a patient by whom I was lately consulted, the hard, sudden, hammering pulse led me to conclude that the blood regurgitated from his aorta ; and accordingly, upon applymg my ear to his chest, I discovered a loud murmur, coincident with the diastole, and most distinct in the direction of the right clavicle. The shock of this man's artery was plainly to be felt, through his clothes, by one's hand laid lightly upon the bend of his arm. His wife told me that, for five years past, this jarring blow had made it uncomfortable for her to take his arm when they were walking together. The same kind of jerking impulse was strikingly perceptible in the femoral arteries, and in the carotids. Of regurgitant sounds belonging lo the right side of the heart I can tell you nothing. I never heard one, that I know of, from the pulmonic valves. Through the tricuspid orifice the blood is believed to be often refluent ; causing, as I stated before, turgescence and pulsation of the jugular veins. The structure of the valve permits this ebbing movement of the blood under circumstances which might other- wise be perilous. The tricuspid has accordingly been called the safety valve of the heart. But the reflux seldom, if ever, announces itself by a bellows sound. We cannot always thus rigidly connect morbid changes with definite signs. Dis- orders arise, of which the symptoms are more cognizable and constant than the seat. We assign a name to the peculiar assemblage of symptoms, and make it thenceforth a distinct object of our study ; tracing the symptoms, as well as we can, up to their organic causes and conditions. Now, the complaint called angina pectoris is one of this kind. It is, moreover, a very curious and interesting disorder ; and I shall de • vote the remainder of the present hour to its consideration. This disease was first accurately described, in this country at least, by the cele- brated Dr. Heberden, the author of the Commentaries. It had been adverted to by many writers before, but obscurely ; and Dr. Heberden's observations were quite original. The description that he has given of the complaint, in the second volume of the Transactions of the College of Physicians, is very accurate and striking. He calls it a disorder of the breast ; and observes that "the seat of it, and the sense of strangling and anxiety with which it is attended, may make it not improperly be called angina pectoris." " Those who are afflicted with it are seized whilst they are walking, and more particularly when they walk soon after eating, with a painful and most disagreeable sensation in the breast, which seems as if it would take their fife away, if it were to increase or to continue. The moment they stand still, all this uneasiness vanishes. In all other respects the patients are, at the beginning of this disorder, perfectly well ; and in particular have no shortness of breath, from which it is totally different." Such is the brief description of the malady given by Dr. Heberden. You will observe that the distress occurs in paroxysms, and the patient at first has intervals of apparent health ; and even when the disease is more advanced, he has periods of comparative ease between fits of suffering. The paroxysms are especially liable to come on Avhen the patient is walking, and, above all, when he is ascending — going up a hill. He is then seized, all at once, with a painful sensation, which seems to be, in many cases, indescribable, but which is always referred to the heart, or its neighbourhood. Sometimes the sensation is spoken of as being a spasm, as giving the patient a notion of constriction ; but it also carries with it the impression that any continuance of the exertion, the stirring another step, would be fatal. Yet the patient is not out of breath. It is not dyspnosa that oppresses him ; for he can, and gene- rally does, breathe freely and easily. He lays hold of any neighbouring object for support. His face is pale and haggard ; and you would suppose, from his appear- ance, that he was actually at the point of death. But in the early stages of the dis- ease, the pang soon subsides, the distress is over, and the patient is entirely himseK again. However, after the lapse of some time, generally of some months, the anguish does not so instantaneously cease upon standing still, nor does it always require somt* bodily exertion to bring it on. It will occur when the patient is quiet, even xn be.' 080 DISEASES OF THE HEART. He feels as if the action of the heart was arrested ; and he is obliged to rise up every night perhaps, for many weeks together. In exquisite cases it will be brought on by causes of any kind that slightly accelerate the circulation : coughing, straining at stool, mental emotion. The pain, which is at first referred to the region of the heart, frequently extends, accompanied by a sort of numbness, from that part to the left shoulder, and down the left arm ; slopping short, in a curious manner, and from some inexplicable cause, either just about the insertion of the deltoid muscle, or at the elbow, or at the wrist. Sometimes, however, it runs down to the very extremities of the fingers ; particularly of the last two fingers, following mainly the course of the ulnar nerve. And occa- sionally similar pains affect the right side and arm. There is (I say) no dyspnoea in the genuine form of the disease; although you will find it stated by some modern writers of good repute, that the paroxysm is accompanied with difficulty of breath- ing. In the instances that I have seen, and they have been few, the patient was able slowly and fully to inspire and expire, even when the fit was on him. The truth I believe to be, that other affections, more akin to asthma, have been confound- ed with angina pectoris ; and this confusion has led to the belief that it is not altoge- ther so dangerous a complaint as used to be thought ; but in its genuine shape it is undoubtedly a very fatal disorder. Dr. Forbes, by a diligent search among authors, has collected some statistical facts respecting it which are worth remembering. Thus, out of eighty-eight cases, eight only, or one in eleven, occurred in females. The ages, in eighty-four of these eighty-eight cases, are recorded ; and of the eighty- four, seventy-two were above fifty years ; and twelve, or one-seventh of the whole, under fifty years. It is a disease, therefore, for the most part, of advanced life ; and this alone would afford a strong presumption of its dependence upon some organic change. Again, the event of the disease was recorded in respect to sixty-four of the patients. Of these, forty -nine died, almost all of them suddenly ; while fifteen reco- vered, or were relieved. And among the forty-nine fatal cases, there were only two of women. That the seat of the disorder is the heart, and that it consists in some structural change, can scarcely be doubted. Yet some pathologists are disposed to consider it a merely neuralgic afft.'ction, " commencing for the most part in the pneumogastric nerve, and spreading in different directions, as other nerves become involved." But this doctrine is scarcely consistent, in my judgment, with the facts — first, that the paroxysm is excited by such causes as are " especially calculated to disturb the natu- ral action of the heart, bodily exertion, and mental emotion ;" and, secondly, that the disease is so very frequently and so suddenly /«/«/. This is not at all the character ASTHMA. marked phthisis. Our lamented principal, the late Mr. Rose, afforded another sad example of the same sequence. And 1 have known two or three families in which one individual was subject to asthma, while others were scrofulous and phthisical. The exciting causes of the asthmatic paroxysm are manifold ; and some of them curious. They seem to be reducible to two classes. 1. Particular states of the atmosphere, which irritate or offend the mucous surface of the air-passages ; or rather, some of the fibrils of the par vagum. 2. Certain subtle influences which afTect in a peculiar manner the nervous system. All the known exciting causes of catarrh are therefore likely to bring on attacks of asthma in the predisposed. But there is a singular caprice in asthmatic patients in this respect. Some persons, sub- ject to the disorder, are unable to breathe in the thick smoky air of London ; require a high and clear situation; and respire easiest in "the difficult air of the keen mountain-top." Others can nowhere breathe so comfortably as in low moist places: in some of the streets by the water-side in the city, for instance. The friend to whom I lately alluded lived at Newmarket ; a most exposed and bleak spot. But if he left it, and attempted to sleep in a strange place, he never was certain that he should not be assailed in the night by his well-known enemy. So that there were towns in which, after experiencing the effects of their atmosphere, he dared not sleep ; and there were others in which he knew he might go to bed in security. It would have been difficult, I believe, to point out any essential difference between some of those localities. His lungs, however, formed an infallible eudiometer. Another college acquaintance of mine, much tormented by asthma, is equally sensible to these inscrutable influences. Two inns in Cambridge are named respectively the Red Lion, and the Eagle. He can sleep in one of them, and not in the other. Nay, he is thus variously affected within much narrower limits. He assures me that, when in Paris, he never escapes a fit of asthma if he attempts to sleep in the back part of Meurice's Hotel, and never suffers if he sleeps in a front room. Dovei Street suits him ; Clarges Street does not. He cannot rest in Manchester Square. This he attributes to its being built upon piles. Whether it really has such a foundation I do not know. And agencies still more slight and subtle are enough to set the springs of these seizures in motion. The mere absence of light, for instance. Laennec speaks of a man who invariably was roused from his sleep by a paroxysm of asthma, if his lamp was extinguished ; or if his chamber-door was shut. The consciousness that the customary preventive remedy was not at hand, has, appa- rently, brought on a fit. There are many persons who never fail to become asthmatic if they inhale cer- tain effluvia. Particles of ipecacuan floating in the atmosphere, or (what is perhaps the same thing) its mere odour, are insupportable to many. They are thrown into a paroxysm of dyspnoea if they enter an apartment where that drug is under prepa- ration. I think I mentioned before a certain laboratory-man at St. Bartholomew's Hospital who possessed this peculiar and inopportune susceptibility : he was obliged to fly the place whenever ipecacuan was about. Most persons, probably, who have had much experience in druggists' shops, are acquainted with similar examples : so that the influence of ipecacuan in exciting fits of difficult breathing, resembling asthma, is undoubted, and cotnmon to many constitutions. We might as well speak of ipecacuan asthma, as of hay asthma, which is a precisely analogous affection. Dr. Marshall Hall calls attention to the familiar but interesting fact, that the same drug, ipecacuan, acting upon the gastric branches of the par vagum, excites the reflex spasmodic act of vomiting. I have said, that the relief afforded by antispasmodic remedies affords presumptive evidence of the spasmodic nature of these attacks. If asthma supervene upon mani- fest bronchitis, or if there^be any signs of congestion about the head, it may be pru- dent to abstract blood : but this measure will not in general be requisite, and when not requisite it should be avoided : for whatever tends to debilitate the patient, or to »ower his vital powers, tends, at the same time, to augment his susceptibility to the f xciting causes of the disease. The dyspnoea may frequently be moderated or alto- gether assuaged by some form of narcotic. Now opium is the narcotic to which we most trust for the mitigation of spasm in general : and opium is of vast service ASTHMA. . 721 m paroxysms of asthma. But there is also another of the vegetable narcotic sub- stances which has obtained an especial repute for its effect in quieting the difficult breathing in these cases ; and that is stramonium. This herb, the datura stramo- nium, and another species of the same genus, the datura ferox, had long been em- ployed in India as a remedy for asthma. And when it was introduced into this country, about the beginning of the present century, it was cried up as a specific : and every body who called himself asthmatic began to smoke stramonium : for that is the way in which it has been chiefly employed. The leaves and stalks are cut and pui into a pipe, and smoked like tobacco. The smoke descends, of course, into the lungs: and when the saliva is swallowed, the remedy is introduced into the system in that way also. Stramonium thus used, sometimes fails altogether : sometimes calms the paroxysm like a charm. The late Dr. Babington told me of a patient of his who had been grievously harassed for a series of years, by asthma, but who declared to him, after he had made a fair trial of stramonium, that he no longer "cared a fig" for his asthma ; which he could always stop in a moment. So a Mr. Sills, in a collection of communications relative to the datura stramonium, published in London in 1811, states, that he had been a great sufTerer from asthma: that the fits usually continued, A'ilh short interruptions, from thirty-six hours to three days and nights successively; 'uring which time, he had often, in the seeming agonies of death, given himself jver, and even wished for that termination of his miseries. But having at length discovered the virtues of stramonium, he uses this strong language: — "In truth, the asthma is destroyed. I never experienced any ill effects whatever from the use of the remedy ; and I Avould rather be without life than without stramonium." This, then, is an expedient which it will always be well to suggest, for relieving the urgent distress of the paroxysm of asthma. But most patients subject to that complaint try it of their own accord. We have still to learn why it is so efficacious in some cases, and so entirely useless, or even hurtful, in others. This probably depends something on the presence or absence of organic disease in the lungs or heart : but more accurate observations are wanted on this point. Some of the animals upon whose lungs Dr. Williams performed his experiments had been killed by poison. In two instances stramonium was the poison employed; and it is interesting to know that scarcely any contraction of the air-tubes could be produced by the galvanic apparatus. The trachea, at the same time, was lax. It is requisite to notice the condition of the wind-pipe in these experiments ; for the same want of contractility would be apparent, supposing the parts to be already in a state of tonic spasm, from the operation of the poison. This seems to have been the case when conium was used : the tluid in the glass tube indicated scarcely any com- pression of the air contained in the lungs ; but then the wind-pipe was so far con- tracted, that the extremities of its rings met. There w^s but little contractility, and a lax trachea, after death by belladotma; and after death by the meconate of mor- phia. The contractility was slight when hfe had been destroyed by strychnia; but the condition of the trachea is not reported. Experiments of this kind appear to be well worthy of careful repetition. I have found a mixture of opium and sulphuric aether of great service in tranquil- izing the breathing in asthma. And in one case, which was under my care for some time, I made comparative observations respecting opium and stramonium. Bo*h gave much relief; but stramonium the most, and the most certainly, if it were applied in time. This patient was in the habit of being roused from sleep by the supervention of the paroxysm: and if he had the means of lighting his pipe in- stantly, he could slave the (it off'. But when once it had attained its full intensity, he was nnalde to smoke. Under such circumstances, he would swallow the mor- phia and aether; and the effect of this depended also in a great measure upon the period at which it was taken. It would stop a commencing paroxysm; but had liule influence over one that was fully formed. It has been suggested, as one clue towards determining the particular kind of casi: to which ;he stramonium is applicable, that it succeeds if it produces expectoration ; and not otherwise. But I doubt about this. The relief is sometimes too sudden to 4G 3l 722 DISEASES OF THE CESOPHAGUS. admit of its being so explained. Dr. Forbes quotes the following passage of a letter from an old and intelligent asthmatic to himself. " Smoking tobacco or stramonium is sure to give relief, if it produces expectoration ; and it will generally do so if, the moment I awake {i.e., in the incipient paroxysm), I begin to smoke, and continue to do so for three or four hours. Smoking, I am able to say, after fifteen years' prac- tice, and suffering as much as mortal can suffer and not die, is the best remedy for asthma, if it can be relieved by exyectoratioti. I have been in the hands of all the doctors of the place for fifteen years ; and still I say, smoke.'''' The lobelia inflata has been of late much lauded for its beneficial operation upon dyspncea of all kinds, and upon asthma in particular. I believe its virtues have been overrated. It sometimes, like stramonium, has an almost magical effect ; but fre- quently it fails to do the smallest good ; and I know that sober practitioners who have employed it more than I have, have thought that it may occasion dangerous symptoms. Of my own knowledge, I have nothing worth communicating to you of this drug. Strong coffee is a common domestic remedy for asthma. The friend and school- fellow already mentioned used to take it in considerable quantities, and, as he assured me, with very great benefit. It is a safe, and simple, and grateful remedy, and has numerous testimonies from medical practitioners in its favour. But it is much less sure than the stronger narcotics. Ipecacuanha, which is so frequently the canse, has also been recommended for the cure of asthma ; and a host of drugs besides, with which I have no intention to weary you. Among the rest, the application of galvanism was once in great vogue. In the only patient who ever tried it under my own eye, — and he insisted upon being galvanized when his fits were quite absent, — the galvanism broup-ht one on immediately. If we can shorten or mitigate the paroxj'sms, we do our patient a most essential service, and spare him a great deal of suffering. And during the intervals between the fits, we must endeavour to prevent their recurrence. For this purpose, I can only just hint at the principle upon which we should go. In the simple form of the complaint, when it is apparently uncomplicated with any organic disease, we must caution the patient against whatever has a tendency to disturb the general health. He must be temperate in all things ; he must pay atten- tion to the regulation of his digestive organs; he must discover what kind of situa- tion suits him best ; and avoid those which experience has shown to disagree with him. And if any one remedial measure be likely to fortify him against his malady, I believe that measure will oftenest be found in the shower-bath, employed in the way which I formerly recommended. If the asthma occurs in connection with any obvious pulmonary or cardiac disease, we must, in addition to the means I have now been adverting to, apply ourselves to the mitigation of such superadded disease. And in respect to this I have nothing more to offer. I go next to the morbid conditions of the oesophagus, so far as they concern the physician ; and these morbid conditions are not many. The cesophagus lies partly in the chest, and partly in the belly, and therefore may very properly close the sub- ject of thoracic diseases, and introduce those of the abdomen. The oesophagus is less liable to disease than any other part perhaps of the ali- mentary canal. It differs in structure somewhat (as you know) from all other parts. Its mucous membrane is provided with a thick epithelium, which extends a httle beyond the cardiac orifice of the stomach. Beneath lies a dense web of areolar tissue, and two layers of muscular fibres ; the one layer being disposed circularly around the tube — the other longitudinally, in the direction of its axis. In some cases there are pouches found in the sides of the cesophagus, formed apparently by a kind of hernia of the mucous membrane, between the separated fibres of the muscular coat. These are not common, however, and scarcely worth mentioning, except that their existence has been supposed to have a possible connection with a curious phe- nomenon, peculiar to some persons; the power, viz., of ruminating ; the power of cringing into the mouth again, by a voluntary effort, food which has been for some DISEASES OF THE CESOPHAGUS. 723 time swallowed, as cows, and the rest of the ruminantia do. There are but few individuals of the human species who possess this faculty ; there are but few who have appendices to their oesophagus. Whether the phenomena in question belongs to these last few has never been determined ; but as the possible connection of the two circumstances has been suggested, it is well for you to be aware of it, that you may refute or verify the notion, in case you ever have the fortune to examine the dead body of a person who had the power of ruminating. The covering of cuticle protects the oesophagus from the injurious influence of matters passing over it, which might otherwise be hurtful. The morbid state for which we are most often consulted is stricture, actual or spasmodic. I believe that the oesophagus is very little subject to inflammation, except from mechanical violence or chemical injury. I have seen a few cases, however, in which I inferred a spon- taneous inflammatory condition of the tube, from the symptoms complained of; which were a sense of heat and pricking exactly in the course of the oesophagus, and felt between the shoulders, and precisely in the part (the patients said) where a potato, swallowed too hot, gives pain while it is descending into the stomach. With these symptoms there was some degree of dysphagia, not explained by anything visible in the throat or pharynx : and some degree of fever. In all the instances of this kind that I have met with, the symptoms have yielded in a ffew days to absti- nence, purgatives, and the application of leeches along the track of the oesophagus. This part of the alimentary canal often suffers severe injury from the deglutition of certain poisons, especially the corrosive poisons ; the strong mineral acids, 'or ex- ample, or the caustic alkalies. We have, in the museum of the college, some very interesting specimens of the effects of these destructive substances. Sometimes, when the quantity of the poison has been small, and its transit rapid, the cuticular hning alone of the gullet is destroyed. It is shrivelled up, broken into fragments, abraded. At other limes, the subjacent textures are affected, and ulceration takes place, which at length heals, and leaves a permanent, and generally a progressive constriction of the oesophagus ; and sometimes the whole of the internal membranes slough away, and are discharged in one continuous tube, from the mouth ; and yet the patient survives for some time. My colleague. Dr. Wilson, had a case of that kind. The patient, a young woman, swallowed about a tablespoonful of oil of vitriol. A week afterwards, she brought up, during a paroxysm of choking cough, a com- plete cast of the gullet, with ragged ends ; or, rather, the gullet itself. Some of the muscular fibres of the oesophagus were plainly visible on the outside of this tubular slough, in its recent state. She lived eleven months afterwards, swallowing all that time with difficulty and pain, and subsisting on slops and soft food. Yet at one pe- riod she certainly gained flesh. After her death, the channel, as it remained after the injury, was taken out and examined. They are both before you — the original slough, and the ultimate gullet. The latter was formed by a surface which consisted of an irregular cicatrix. The tube was contracted considerably in the lower two- thirds of its course. When patients have sufl^ered inflammation and ulceration of the oesophagus from these causes, and do not perish at the time, they are very liable indeed to hfy^e their existence abridged by the occurrence of stricture of the gullet, which goes on slowly increasing until no food can pass it, and then, of course, the patient dies of starvation. I show you here an cesophagus taken from a man whose case I had opportunities of observing from the beginning. He was under the care of Dr. Macmichael, in th& Middlesex Hospital. He was brought there in November, 1830, having swallowed, half an hour before, a solution of the impure carbonate of potass, which had been made for the purpose of cleaning paint, and which he had mistaken for beer. Not more than a tablespoonful passed the fauces, and probably none of the poison reached the stomach. He suffered severely, and was in considerable peril for several days, in consequence of inflammation of the fauces and epiglottis ; but this gradually sub sided, and he went out apparently well. From what I knew of the result of such cases, I ventured, however, to predict that this man would, sooner or later, come back with stricture of the oesophagus. He had always pointed out a spot about half-wav 724 DISEASES OF THE CESOPHAGUS. down the sternum, where he said the oil of tartar had caused him extreme pain at the very first, and below which he had not felt it. Accordinglj^ I was not surprised to see the poor fellow at the hospital in February, 1834, attending as an out-patient. He came there, he told me, because in eating some soup he had accidentally swallowed, without chewing it, a piece of carrot, which lodged in its way down, and which it became necessary to push onwards into the stomach by means of a probang. Morsels of food had stuck in the same spot before ; and it was the very spot where he felt the efTects of the caustic at the time of the accident. He looked tolerably stout and healthy ; but said that, since swal- lowing the potass, he had never been the man he was before. He continued to make his appearance, from time to time, at the hospital, with similar symptoms, till the 5th of last December (1836), when he was brought there insensible, and evidently dying. We could obtain no satisfactory account of his recent symptoms. He had the mark of a blister, however, on his left side ; and upon closely examining him, it was plain that that side was full of fluid. It was perfectly motionless in respiration; it was palpably larger than the right side; it yielded everywhere a dull sound on percussion ; and no vesicular breathing w^hat- ever could be heard there by the ear. The respiration on the right side was puerile ; and the beating of his heart, with a systolic bellows sound, was audible on the right of the sternum. Although I was certain that the left pleura was full of liquid of some kind, I did not have the thorax punctured ; because, in the first place, he was manifestly in articulo mortis, and I thought that his death, which was certain, might be attributed to the operation ; and secondly, because he was not dying of suffocation. His breathing was not laborious or much distressed ; but he was dying of coma, and his extremities were already cold, and his pulse was fluttering. I conjectured that an ulcer of the oesophagus had made its way into the pleura, and caused inflammation there. But my conjecture was wrong. I will mention the main particulars of the examination of the dead body, because the case was, in several respects, an interesting one. There was a considerable quantity of serous fluid in the meshes of the pia mater, bent-ath the arachnoid ; and there was some liquid of the same kind in the lateral ventricles. No other diseased condition could be detected in the brain. The effu- sion was sufficient, supposing it to have come on suddenly, to explain the coma. I had the ribs sawn away on the right side, leaving their cartilages attached to the sternum ; and then we saw plainly that the heart and mediastinum were thrust over, about four inches by measurement, beyond the mesial line on the right side. The body was on its back. It was easy to perceive how a pleura thus full of fluid must oppress the lung of the other side, especially when assisted by the force of gravity. The left cavity was distended by a grayish-coloured and most ofTensive fluid, of the consistence of gruel; the pleura pulmonalis was covered by a layer of coagulable lymph; and the lung was flattened against the vertebral column. AVe could not discover any communication between the cavity of the pleura and the oesophagus or air-tubes. About the middle part of the oesophagus there was a distinct stricture, occupying about half an inch of the tube. Through this portion it was impossible to push one's little finger, which elsewhere found a loose and ready passage. In this case, the man did not die of the stricture ; but he w'ould have done so, had ' not another disease carried him off. I do not know why the constriction, after it has once taken place, should go on continually increasing ; yet it seems to be so. In his Surgical Observations, Sir Charles Bell mentions three cases like that just de- scribed. In one of them, where soap-lees had been the substance swallowed, death took place by starvation from stricture of the gullet, twenty years afterwards ; and Sir C. Bell had no doubt that the stricture originated in the chemical injury inflicted by tne soap-lees.. When the symptoms of stricture come on in these cases, physic can do almost nothing Surgeons pass bougies into the gullet, and attempt to dilate the strictured DISEASES OF THE CESOPHAGUS. 725 portion, or to prevent any further narrowing. But this expedient is usually of tem- poraiy benefit only, and the patient dies at last of inanition. His miserable existence may perhaps be protracted a httle by injecting nutritive enemata into the rectum. Sometimes the oesophagus ulcerates through, and a communication is formed between it and the neighbouring parts. But the (Esophagus, like the urethra, and like the bronchial tubes, — like every canal, indeed, in the living body, that is surrounded by circular muscular fibres, — is liable to temporary constriction and closure, by the spasmodic action of its own mus- cles ; and this affection is, of course, a far less formidable one than the last. Patients who are subject to spasmodic stricture of the (Esophagus experience occa- sionally, in some point or other of that tube, a sensation as if there were a knot ; or sometimes a feeling as if some solid substance was ascending from the stomach towards the pharynx. If they happen to be then engaged in eating, the morsels of food, after mastication, readily pass the pharynx ; but, at a certain distance down the gullet, they stop, and occasion pain which is felt between the shoulders, or distinctly in the passage itself. Great anxiety and distress accompany this stoppage, and the food is often rejected by a reversed action of the (Esophagus. The symptoms, in fact, are identical with those which result from permanent stric- ture of the gullet, except that they are not permanent. When the stricture is or- ganic and abiding, the symptoms occur during or after every meal. When it is simply spasmodic, they come and go, capriciously, we often cannot conjecture why or wherefore ; after the fashion of other spasmodic ailments. Spasmodic stricture may be independent of any disease of structure in any part of jhe body ; but it is of some importance to be aware that it may also be symp- tomatic of very serious organic changes. Mr. Mayo relates the case of a young man " who had difficulty of swallowing ; he could get diDwn liquid food only ; and that not without an effort. A bougie being introduced, some resistance was found at the' upper opening of the (Esophagus, but it yielded : the resistance was spasmodic, and depended upon neighbouring irritation caused by ulceration in the interior of the larynx. The use of the bougie for a few days, with appropriate remedies to the larynx, removed the dysphagia." The purely spasmodic cases occur principally in persons of a movable constitu- tion : in young women whose uterine functions are deranged, and who are liable to hysteria. The remedies for hysteria will prove remedies for the spasm of the oeso- phagus also. And whatever is calculated to excite ordinary hysterical symptoms, • whatever tends to render the system weak and irritable, will lend to aggravate the oesophageal stricture. I alluded to such cases in a former lecture. I give you ano- ther, related by Sir Benjamui Brodie. A lady consulted him, unable to swallow the smallest morsel of solid food ; and swallowing liquids not without great difficulty. The symptoms had been coming on upwards of three years. A full-sized (Esopha- gus bougie being introduced, entered the stomach without meeting the slightest impediment. This lady's iace was pale and bleached : her feet were ojdemalous. She had long laboured under internal piles, from which repeated discharges of blood had taken place. Under the use of remedies which reheved the piles and the bleed- ing, the difficulty of swallowing went away. It is a singular, and it might, if more frequent, be a puzzling circumstance, that very nearly the same symptoms which occur when the esophagus is permanently or temporarily constricted, happen also sometimes under a totally opposite condition of that tube ; I mean its dilatation into a large, inelastic, inert bag. One remarkable example of this I witnessed in a woman whom I attended in conjunction with Mi. Mayo, some years ago, in the Middlesex Hospital. The case has been fully de scribed by Mr. Mayo, in the third volume of the Medical Gazette ; and more briefly in his Oullbics of Pathology. She was thirty-three years old. She was Drought to the Hospital in a state of extreme feebleness and emaciation. They who brought her said that for the preceding month she appeared to keep down nothing. What she took as food seemed to her to stop in the gullet; and, after a few minutes, it leturned. A large ccsophagus bougie passed readily into the stomach. She could swallow liquids more easily than solid food. When she look a small quantity, it did 3l3 726 DISEASES OF THE CESOPHAGUS. not feel to her as if it reached the stomach ; and in three or four minutes it was inva- riably rejected. The vomiting was not preceded by nausea, although in its progress it had the appearance of ordinary retching. She craved for food and drink, and seemed literally starving. The complaint had begun ten years before, during her pregnancy, and had gradually got worse. The belly was so shrunk that the umbi- licus was not more than an inch distant from the spine. There was no enlargement nor hardness about the stomach ; no particular tenderness on pressure of the epi gastrium ; nor any uneasiness there. She died, utterly extenuated, sixteen days after her admission. The stomach was found small, and contracted at its middle to the breadth of an inch and a half. The upper part of the duodenum was but half the ordinary size of the ileum. The oesophagus I show you, turned inside out. It is enlarged to an extraordinary degree of dilatation, as you perceive. It was healthy, and of its natural size, at and near each extremity. Intermediately the lining tunic was thickened and opaque, with numerous depressions in it. The musculai fibres, which appeared to have multiplied with the expansion of the canal, were of their natural colour and thickness. Here is another preparation : a dilated oesophagus with cancerous degeneration of the cardiac orifice of the stomach. I do not know its history ; but the mechanism of such dilatation is intelligible enough. The food, unable to pass out of the gullet into the stomach — or passing slowly and uncertainly — the tube behind it is habitually distended, and loses at length its proper contractility. I saw last summer, in con- sultation with Mr. Mayo, an old gentleman, of seventy, who, for two years, had experienced difficuhy in«getting food into his stomach. He would eat a few mouth- fuls very well ; and then, of a sudden, the next mouthful, after passing the pharynx, would stop just short of the stomach ; and a sensation of swelling would arise in the lovi^er and middle part of the cesophagus ; and presently up the mouthful would come again. Sometimes, by waiting quietly a little while, the morsel would go on ; some- times he could wash it forwards by a gulp or two of drink : but if once the food got fairly into the stomach he had no further trouble with it. This gentleman had no discoverable disease of the heart or lungs. He gradually grew worse. At last he began to vomit grumous matters, resembling coffee-grounds, and soon died. He was at some httle distance from London at the time, and the body was not (I believe) examined. I have no doubt that he had malignant disease of the cardia ; and I think it probable that his oesophagus was dilated. I had a female patient about two years ago in the hospital with very similar symptoms ; and her stomach was found, to be full of cancerous disorganization. The state of her gullet is not recorded. We are apt, in such cases, to satisfy ourselves with ascertaining the gastric disease, without carefully examining that part of the alimentary canal which lies above. For maladies like these medicine has no cure. Opiates may give comfort, and promote the euthanasia : and that is all. [During the period of infancy, the mucous membrane of the cesophagus is not unfrequently the seat of inflammation, of a diphtheritic, follicular, or erythematic character. The disease, however, is not very often detected during the life-time of the patient, in consequence of the symptoms by which it is accompanied being those which are common to many of the affec- tions of the earlier months of existence. In fact, almost the only symptom in many cases of oesophagitis in the infant is frequent vomiting ; — 'immediately after the deglutition of drinks, or of aliments of any kind, these are discharged by vomiting, without having under- gone any change. The infant usually refuses the breast and fluids generally, evidently from the pain excited by the act of deglutition; occasionally, however, he will swallow, without much difficulty, half solid aliment when given in small quantities at a time. If the stomach be affected with inflammation at the same time with the cesophagus, the undigested food and drinks discharged by vomiting will be, occasionally, mixed with the morbid secretions of that organ. The disease is seldom attended by any degree of febrile excitement — The infant is, usually, fretful and restless, and becomes rapidly emaciated. Whenever an infant iejects the breast, or any species of fluid aliment, vomits frequently, and discharges what- ever he swallows in the same state nearly as when it was taken, it is the duty of the prac- titioner to institute a minute examination, in order that he may detect the inflammation of the oesophagus if it exists. It is probable that pressure along the whole track of the cesophagui wrill pxcit» the cries of the child, when we can have no hesitation as to the diagnosis. IC DISEASES OF THE ABDOMEN. 727 this does not happen, we may nevertheless be tolerably certain as to the existence of the inflammation, if the infant be labouring at the time, or has very recently been labouring, under one or other of the forms of stomatitis. If the inriammation is confined entirely to tlie mucous membrane of the gullet, and is not aggravated by improper food or drinks, it will often subside, after a few days, spontaneously ; but when it is connected, as is very generally the case, with inflammation of the stomach or intestines, it is an atfection diiBcult to control, and usually fatal. In perhaps the majority of cases, oesophagitis in the infant is preceded by erythematic, diphtheritic, or follicular stomatitis. The frequency with which inflammation attacks the mucous membrane of the CESophagus in the infant, is evidently due to the predisposition which exists, at this period, to disease of all the mucous surfaces from their constant state of hyperssmia ; it is liable to be excited by too much or improper food, or that which is too hot or stimulating. In infants confined to the breast, it may be occasioned by the bad quality of the mother's milk, or by some tempo- rary morbid change occurring in the latter — and which may be produced by a variety of causes. CEsophagitis has been known to result from the reprehensible nursery practice of admmistering to infants infusions of spices, or even gin and water, for the purpose of expel- ling wind, or to relieve the colicky pains with which they are so frequently affected. — In common with all the affections of the mucous membrane in early life, inflammation of the ossojihagus occurs most frequently, and is the most difficult to manage in infants exposed to the baneful influence of personal and domestic filth, and a confined and impure air. Accord- ing to Billard, tlie aflection of the gullet is almost invariably preceded by stomatitis — parti cularly, we may add, of a diphtheritic or follicular character. The pathological changes detected after death in cases of (Esophagitis, are stated by Bil- lard to be vivid redness, with destruction of the epithelium, of some portion of the mucous membrane of the cesophagus, especially of its upper portion; in some cases, a curdlike ex- udation, more or less extensively difl'used, is present ; in others follicular ulcerations ; a sepa- ration of portions of the epithelium, often in large shreds, is occasionally met with ; nume- rous red or dark-coloured striae occurring where the epithelium is not destroyed ; large, irregular eschars of a black colour, with intervals of deej), bright-red excoriations, are occa- sionally met with, and, in some cases, gelatinous softening of nearly the entire thickness of the oesophagus. When 'an infant is affected with oesophagitis, there should not be given to it any stimulat- ing or hot drinks — it will be proper, however, to supply it, at short intervals, with a small quantity of some perfectly bland mucilaginous fluid, as gum water, or an infusion of the pith of sassafras, or of the inner bark of the slippery elm, given cold ; the throat should be co- vered externally with a soft, emollient poultice, especially when the inflammation of the oesophagus has succeeded to stomatitis ; a few grains of calomel may also be administered, and followed by injections of milk with the addition of sugar. If it be found necessary, the strength of the infant may be supported by injections of milk and broth, or milk with rice flour, tapioca or arrow root. We have derived advantage in cases presenting the symptoms of oesophagitis, from a few leeches applied along the sides of the neck, and internally a tea- * spoonful, every three hours, of a solution of four grains of the acetate of lead in one ounce of water, with the addition of a few drops of strong vinegar. — C] LECTURE LXV. Diseases of the Abdomen: sometimes difficult to identify. Method of investigating these diseases ; by the eye, the hand, the ear. Inflammation of the Peritoneum: its symptoms; and causes. Puerperal Peritonitis. Peritonitis from Perfo- ration. I AM about to consider the diseases of the abdomen. The organs contained in this cavity of the body are not vital organs in the same sense in which the brain, the the heart, and the lungs, are vital. That is to say, the functions of the abdominal viscera will bear to be suspended for some considerable time, without the extinguish- nient of life. But these parts are subject to numerous diseases, some of which ait apt to be quickly fatal, and others carry with them a vast amount, and very severe kinds, of suffering. The parietes of the fore part of the belly being soft and flexible, you might natu rally suppose that the physical morbid conditions of the organs they cover would submit themselves to an easy diagnosis ; that the sense of touch, exercised through 728 DISEASES OF THE ABDOMEN. these yielding walls, would detect alterations of bulk, of form, or of place, in the subjacent viscera, with much facility and exactness. But the truth is, that since the discovery of the method of auscultation, the diseases of the abdomen are much more iiard to discriminate than the diseases of the thorax. The reason of this is to be found in the number and complexity of the parts contained in the abdomen ; the loose manner in which some of them are packed ; and the consequent readiness w'lih which they pass out of their proper and natural situations. It is necessary that I should say a few words, but I shall not detain you long, respecting the mode of ex- mniniag the abdomen, with the purpose of investigating its diseases. In the description of symptoms, we are often obliged to speak of particular por- tions of the abdomen: and it will be of future convenience to us if we make ourselves acquainted, at starting, with such a superficial map, marking out the topography of the belly, as I exhibited to you sometime since, in reference to the chest. Draw a horizontal line round the body, touching the extremity of the ensiform cartilage; and this will form the superior boundary of the abdomen, thus roughly defined for prac- tical purposes. Draw another such line round the body, horizontally, touching the lower edge of the last false ribs : and a third touching the crest of each ilium. We then have three horizontal zones formed. These must be further divided by vertical lines : one on each side from the anterior spinous process of the ilium perpendicu- larly upwards. Each zone will thus be subdivided into three regions. The middle region of the upper zone is the epigastric region ; on either side are the hypovhon- dria. The middle region of the middle zone is the umbilical region ; the iliac regions or the Jlanks lie to the right and left of it. The hypogastric region is the middle region of the lowermost zone ; and the inguinal regions are contiguous to it. This is all the division which is necessary. Now independently of the general signs of diseases that have their seat in the abdomen, we are greatly assisted in many cases by the physical signs. I shall take a very brief survey of the modes by which these physical signs are collected. They are derived from the exercise of the three senses of sight, of touch, and of hearing. The sense of sight suppUes, occasionally, very valuable information ; and in all serious and equivocal cases we must not dispense with its use. We are not, indeed, to make an ocular inspection of the naJced abdomen unnecessarily: and I hold it superfluous to admonish you that when we do avail ourselves of that mode of in- vestigation, especially in the case of females, we are bound to do so with the most careful attention not to ofiend the patient's delicacy. We may sometimes ascertain all that is required concerning the movements, size, and shape of the abdomen, without removing the under garments. This rule applies, indeed, to all parts of the body that are ordinarily covered by the dress. I was lately consulted by a lady, who told me she had, on the rear of her person, a painful boil. She thought any physician ought to be competent to prescribe for a boil, without wanting to see it. But she seemed very ill, and her sister told me that the boil had lasted a fortnight, and was a very large one ; so that I was obliged to press for an inspection. And I found — a boil sure enough, but of that gigantic and formidable species which we call carbuncle. M. Rostan relates a case still more in point. Going round the Avards of his hos- pital, he came to an old woman, who was complaining of severe pain in the abdo- men, towards the left iliac region. Her face was flushed, her skin hot, her pulse strong and frequent, her tongue dry ; and she was very thirsty. The abdominal pain was exasperated by pressure, and by the movements of the patient. Upon these data Rostan founded his diagnosis. He concluded that the case was one of acute abdominal inflammation ; and he prescribed accordingly; and with befitting energy. One of the pupils, however, lingered behind him : and having removed ihe woman's chemise, in order to examine the seat of the pain, he discovered that all ihe symptoms proceeded in reality from a very harmless, though troublesome, disor ;ii'i. herpes zoster ; what is vulgarly called the shingles. Vestis adempta est Qua posita, nudo patuit cum corpore crimen. PERITONITIS. 729 In the second place, we gather very important intelh'gence by the sense of touch. We learn the existence and the size o^ tumours ; we approximate to a knowledge of their nature, whether it be solid or fluid ; we determine whether they are movable or fixed, painful or indolent, hard or soft, smooth or uneven, pulsating or not. We ascertain whether the surface be hot or cold. In order to make palpation most effectual, the patient should be placed in the most favourable posture for its perform- ance; i. e., he should lie on his back, with his head a little raised, and his knees up. In this position, the abdominal muscles are relaxed and unstrung : and the patient is to be cautioned not to do anything which may make them tense. Sometimes, in spite of this caution, and in spite, probably, of the patient's endeavours to obey it, the recti muscles remain so tightly contracted as to prevent any satisfactory examina- tion of the parts beneath them. The very occurrence of this instinctive striving against the pressure of our hand may be taken as a ground of suspicion that those parts are not in a healthy state. We must take care, when the muscles are thus obstinately rigid, not to mistake the swelling central portions of the recti, or their well-defined edges, for tumours, or for indications of an enlarged stomach or liver. By a peculiar management of the palpation, we often satisfy ourselves at once of the presence of liquid in the cavity of the peritoneum, or in a cyst: we obtain that sensation which we cdX\ fluctuation. The exploration by the sense of touch is very much aided — often confirmed, some- times corrected — by that which addresses itself to the sense of hearing. Sometimes we listen to the natural sounds through a stethoscope ; and we may thus decide the important question, whether a pulsating tumour be or be not an aneurism ; or the question, sometimes scarcely less important, whether a different kind of tumour en- closes another hving being or not. But, for the most part, our information respect- ing the maladies of the abdomen, collected by the sense of hearing, is obtained by listening to sounds which we ourselves produce; in one word, hy percussion : and mediate percussion, percussion performed through the finger as a ready plexi meter, is particidarty applicable to the disorders of the abdomen. By this expedient we can tell whereabouts the intestines lie ; whether the parts beneath the place per- cussed be hollow and filled with air, or solid ; or, though naturally hollow, distended with liquid. By making the patient change his posture, we are enabled often, through the aid of percussion, to trace fluid effusions hither and thither, when they have changed their relative situation, by reason of the force of gravity ; and then we know that they occupy the cavity of the peritoneum. All these points I pass over cursoril}% because I must advert to them again when speaking of particular diseases. And I shall proceed, on that account, without further delay, to the consideration of those special diseases. Consulting your convenience, and mj'- own, rather than any scientific order, I shall take, in succession, the several parts and organs contained in the cavity of the belly, and inquire separately into their diseases ; inflammatory, organic, and func- tional. And I begin with the peritoneum; the great serous sac which lines and constitutes the cavity of the abdomen, and in which most of its viscera are wholly or partially folded. Like the serous membranes in general, the peritoneum is very ready to take on inflammation, upon the operation of certain exciting causes. Acute inflammation, beginning in one spot, is almost sure to transfer itself to any other spot that happens to lie in contact with the first ; and is very apt to extend itself rapidly to the whole membrane. The inflammation tends to the effiision of serum, and of coagulable lymph ; it is of the adhesive kind : and its efiects are those of distending the peri- toneal cavity with fluid — or of gluing its opposite surfaces together so as to obliterate that cavity — or of forming partial attachments. In all these respects, the analogy between inflammation of the peritoneum and inflammation of the stious membranes of the thorax — the pleura, and the pericardium — is perfect: and therefore these aru points which I shall not dwell upon, except where specific differences arise, from original diversities of structure or function in the parts affected. 1 may observe at once, that the morbid conditions which are apt to remain after peritonitis, are some- times, hke those which follow pericarditis, inceptive of further disease; sometimes 730 DISEASES OF THE ABDOMEN. like those of the pleurte, final, and limited to their hmnediate influence upon the health and comfort of the individual : or even protective against some worse evil. Acute inflammation of the peritoneum is characterized by pain in the abdomen, increased on pressure, and attended with fever. But as these symptoms are common to almost all the inflammatory conditions of the parts contained in the abdomen, we must look for more distinctive circumstances. CuUen defines the disease in this manner: "Pyrexia: dolor abdominis, corpore erecto auctus, absque propriis aliarum phlegmasiarum abdominalium signis." He concludes that it is the peritoneum simply that is inflamed, when the specific symptoms that indicate inflammation of particular organs are wanting. It is not inflammation of the liver, for there is no pain of the right hypochondrium in particular, increased by lying on either side, no pain of shoulder, no jaundice, no vomiting, perhaps : neither is it inflammation of the bowels or stomach, for there is no disturbed function of the alimentary canal to denote such inflammation. The pain, Cullen says, is increased if the patient sits up. He might have added, that it is increased also by drawing a long breath, by coughing, sneezing, or strain- ing, and by pressure made with the hand upon the belly. All these circumstances resolve themselves into the same obvious principle ; viz., that of pressure aggravating the pain of an inflamed membrane. The erect posture throws the weight of the viscera upon the peritoneum, and tends to stretch parts of it. The pain occasioned by pressure is often excessive ; the patient cannot even bear the weight of the bed- clothes. Though the pain is, at first, sometimes confined to particular spots, yet it generally soon extends over the whole abdomen ; and this is a circumstance of some importance as respects the diagnosis. But before the inflammation has become uni- versal, while it is yet restricted to particular spots, the pain is often much increased by pressure made on other parts of the abdomen. In truth, in a shut sac of that kind you cannot compress any one part without exercising pressure indirectly upon every other part. The patient cannot sit up, nor, usually, lie on his side ; but remains always upon his back : in which position you will perceive that the pres- sure made by the viscera upon the peritoneum is a minimum ; is the least possible. He draws up his legs too. And he lies still ; for movements cause pressure, and therefore pain. The descent of the diaphragm in inspiration presses also upon the membrane ; and the patient not only complains of the pain thus produced, but in order to avoid it gets into a way of breathing by means of his ribs only. So that upon inspection of the abdomen, it is perceived that, instead of rising and sinking alternately in respiration, it remains motionless. The phenomena of thoracic respi- ration is a symptom of peritonitis. The breathing is necessarily shallow in these cases, and less air being admitted at each movement of respiration, the number of those movements therefore is increased : the breathing is quick as well as shallow : there are perhaps forty, or even sixty respirations executed in a minute, instead of -eighteen or twenty. When we find a person lying only on his back, with his knees up, breathing in this manner, and complaining of tenderness of the belly on pressure, and feverish withal, we may be tolerably sure (unless that person be an hysterical girl) that the peritoneum is inflamed, whatever else may be the matter. The pain in peritonitis is generally sharp, cutting, or pricking in its character And independently of any pressure made from without, or caused by any change of posture, this pain is apt to be much aggravated at intervals. This, when the inflammation is general, is sometimes owing to the passage of flatus along the bowel, partially distending it, and stretching the inflamed membrane ; so that here also, it is r^^aWy pj-essure which augments the pain. When you explore the abdomen by pressure, take care not to make the examina- tion unnecessarily a source of pain. Press first gently, with the open flat hand ; and keep your eyes on the patient's face at the same time. You will perceive by the expression of his features, Avhether you are hurting him ; even before he takes to verbal complaining. Acute peritonitis generally sets in with well-marked symptoms : sharp rigors, and nigh fever, with a hard and strong pulse, which very soon becomes frequent, and often oecomes feeble, and is sometimes small from the very first. After the disease PERITONITIS. 731 has continued for a certain time, it is attended with tension and swelling of the be^Iy. The tension and swelhng are tympanitic in the earlier stages. You learn this with certainty by mediate percussion. As the disease advances, the enlargement is some- times occasioned, in part at least, by the effusion of serum : of the presence of which infallible indications may be obtained by the joint employment of the finger and the ear ; by palpation and auscultation ; and by noticing the difference, as to the results of percussion, caused by alterations of posture. When the disease is advancing towards a fatal termination, the abdomen often be- comes greatly distended ; the pulse is exceedingly frequent and feeble ; the counte- nance (which in all the stages of the disorder is expressive of anxiety) becomes pincheu and ghastly ; cold sweats ensue ; and the patient dies at length by asthenia : death beginning at the heart. The mind is often clear to the very last. Such is the ordinary course of peritonitis. But other symptoms, which I have not mentioned, do sometimes accompany it ; arising out of the peculiar circumstances of different cases. Thus sickness and vomiting occur very frequently ; and these symptoms are supposed to denote that the peritoneal covering of the stomach is especially implicated : but I question whether this is always a correct inference. When strangury happens, which is not uncommon, that part of the membrane which is reflected over a portion of the bladder is probably involved in the mischief. Inflammation of that part of the peritoneum which lies in the immediate vicinity of the kidneys, may cause. Dr. Abercrombie thinks, suppression of urine. Peritonitis is apt to arise under the influence of cold, like other internal inflamma- tions : especially when cold combined with moisture is applied, under certain condi- tions, to the surface of the body. It is occasionally produced by mechanical inju- ries inflicted upon the abdomen. It often prevails epidemically, and produces great moriality, among parturient women : and there is ground for believino- that this form of the disorder is propagable, and often propagated, by contagion. Be- sides this, a very terrible kind of peritonitis is a frequent result of the extravasation of the contents of the alimentary canal, or of urine, or of bile, into the cavity of the membrane ; through apertures that are sometimes made by external violence, but more often are the consequences of the progress of previously-existing disease. I shall make a few observations in respect to one or two of these points, and but a few. That awful disorder, puerperal fever, is more frequently accompanied with hiflam- mation of the peritoneum, than with any other inflammation. This variety of peri- tonitis necessarily engages the attention of the accoucheur; and it doubtless is more fully considered in the lectures of the Professor of Midwifery than I propose to consider it. Indeed, if you would understand puerperal fever as a whole : its shiftincr aspects, its single source, and its appropriate management ; you must study Dr. Fer- guson's masterly and conclusive essay on that subject. Of forty-four fatal cases of well-marked puerperal fever which fell under the observation of Dr. Robert Lee, and in which the bodies were carefully examined, the peritoneum and uterine appendages were found inflamed in thirty-two : i. e., in eight cases out of every eleven. The inflammation commences, no doubt, in the uterine portion of the membrane, and spreads thence over the larger part of its sur- face. Now this peritoneal inflammation, occurring in women after childbirth, may be accidental and sporadic ; or it may prevail in a district epidemically. And a most dreadful and deadly affection it may then become. In either case, the peritonitis may commence a few days, or even a few hours after parturition. The pain gene- rally begins low in the abdomen, in the situation of the uterus ; which may be felt through the abdominal parietes, and is tender on pressure : but soon a universal swelling takes place, and the womb can no longer be distinguished. Cases of this kind arise sometimes, apparently from cold ; and exhibit no peculiar feature. It is just what we might expect when a female, in a state of weakness and irritability, happens to be exposed to the exciting causes of inflammation. In such a state, a less degree of the exciting cause would be sufficient to produce the inflammation . and probably a less degree of inflammation may prove fatal. But when peritonitis is frequent among women after childbirth in a particular 732 DISEASES OF THE ABDOMEN. neighbourhood, or in a lying-in hospital, it is marked by greater depression of the vital powers, and runs a more irregular course. The nervous system suffers, the sensorium is apt to become affected, and the complaint assumes rather the character of continued fever than of simple inflammation of the peritoneum. And no wonder ; since this variety of peritonitis forms part of a disease which, like continued fever, is a general disease, and results from contamination of the blood. This, Dr. Fergu- son has clearly established. The contamination may originate in the body of the patient herself: the noxious material being supplied by putrid coagula, or portions of placenta, remaining in the uterus. Or some of the products of inflammation may enter the blood-vessels, and constitute the poison. And this it may be difficult or impossible to prevent. But, on the other hand, the contamination may arise in the way of contagion : this horrible malady may be communicated from one lying-in \Vornan to another by the intervention of a third person ; and doubtless it is so carried and propagated, in many instances, by midwives and accoucheurs. Now this source of the disorder may be obviated ; and therefore it is of the utmost im- portance that it should be clearly recognized, in order that it may be carefully pro- vided against. You must know, however, that great differences of opinion have existed, and, I believe, still exist, in respect to the contagious quality of certain forms of peurperal peritonitis ; just as great differences exist as to the contagiousness of continued fever, of cholera, of the plague. There are parties who regard the whole notion of con- tagion as a mere bugbear: and there are others who embrace in their allegations of contagion many more diseases than can be proved to be so caused. Tlie same strong assertions are made, the same kind of eagerness is displayed (the same party- spirit, I had almost said) as mark the strife of ordinary politics. It is our serious duty, however, to inquire what is the truth in this matter: for the safety of indivi- duals, and the happiness of whole families, may often hang upon our opinions. I must trouble j'ou, therefore, with a few facts that bear closely upon the subject. We possess some valuable and highly instructive accounts of epidemics of the kind I am alluding to. One by Dr. Gordon, on the epidemic peritonitis after child- birth, which took place at Aberdeen, in the years 1789, 1790. Another by Mr. Hay, on that Avhich happened at Leeds from 1809 to 1812. And a third by the late Dr. Armstrong, on that which was observed in Sunderland and its neighbourhood in 1813. Dr. Robert Lee has also collected some very interesting facts in reference to the spreading of thp peritonitis by contagion. Dr. Gordon had, he affirms, unques- tionable proof that the cause of the disease was a specific contagion, and that it did not arise from any noxious constitution of the atmosphere. The disease seized such women only as were visited or delivered by a practitioner, or taken care of by a nurse, who had previously attended patients affected with the same disorder. And Dr. AriUitrong observed that forty out of the forty-three cases that happened at Sun- derland, occurred in the practice of one surgeon and his assistant. From among other histories — all tending to the same conclusion — brought together by Dr. Lee, I take the following : — "On the IGth of March, 1831, a medical practitioner, who resides in a populous parish on the outskirts of London, examined the body of a woman who had died a few days after delivery, from inflammation of the peritoneal coat of the uterus. On the morning of the 17th of March (/. e., the next morning), he was called to attend a private patient in labour, who was safely delivered on the same day. On the 19th, she was attacked with severe rigors, great disturbance of the cerebral functions, rapid feeble pulse, with acute pain of the hypogastrium, and a peculiar sallow colour of the whole surface of the body. She died on the 4th daj^ after the attack, on the 22d of March ; and between that period and the 6th of April, the same practitioner attended fwo other patients, both of whom Avere attacked by the same disease in a vnalignant form, and fell victims to it. On the 30th of March he bled a young woman who had pleurisy : the wound became inflamed after a few days ; erysipelatous redness and swelling extended from it up the arm; and in four or five days that patient died of phlebitis." Mr. Rooerion, of Manchester, states the following facts, in a paper in the Medical PUERPERAL PERITONITIS. 733 Gazette. — From the 3d of December, 1830, to the 4rh of January, 1831, a midwife attended thirty patients for a public charity. Sixteen of these were attacked witii puerperal fever, and they all ultimately died. In the same month, 380 women were delivered by other midwives for that institution ; but none of the 380 suffered in the smallest degree. All the sixteen had inflammation of the peritoneal surface of the uterus. So, also, Dr. Robert Lee tells us that, in the last two weeks of September, 1827, five cases came under his observation. All the patients had been attended in labour by the same midwife: and no example of a febrile or inflammatory disease of a serious nature occurred during that period among the other patients of the same dispensary, who had been attended" by the other midwives belonging to the hislitution. Statements of this kind — and they could be largely multipHed — furnish irresistible evidence, that the peritonitis, which prevails epidemically among lying-in women, is of a specific nature, and communicable from one person to another. It is observed, also, to reign as an epidemic especially in lying-in hospitals, and that it recurs at irregular intervals, sometimes leaving them quite exempt from its ravages for years together. Indeed, I beheve that these cases of puerperal fever occurring in succession to the same practitioner, are examples of something more than ordinary contagion, operating through the medium of a tainted atmosphere. I believe them to be instances of direct inoculation. Recollect, that the hand of the accoucheur is brought, almost of necessity, into frequent contact with the uterine fluids of the newly-made mother. Recollect, — those among you who have examined the interior of the dead body with your own hands, — recollect, with what tenacity the smell, which is thus contracted, clings to the fingers in spite even of repeated washings ; and whilst this odour re- mains, there must remain also the matter that produces it. Recollect how minute a quantity of an animal poison may be sufficient to corrupt the whole mass of blood, and fill the body with loathsome and fatal disease. Illustrations will occur to you in the inoculated small-pox, in hydrophobia, in the viper-bite, in the scratches and punctures of the dissecting-room. Recollect the raw and abraded state of the parts concerned in parturition ; the interior of the uterus forming a large wound, and presenting, as Dr. Ferguson observes, an exact analogy to the surface of a stump after amputation ; the more external soft parts bruised and sore. Bear in mind the remarkable fact, that this contagion does not affect other persons, but only lying-in women. Reflect- ing upon these facts, you will see too much likelihood in the dreadful suspicion, that the hand which is relied upon for succour in the painful and perilous hour of child- birth, and which is intended to secure the safety of both mother and child, but espe- cially of the mother, may literally become the innocent cause of her destruction ; innocent no longer, however, if, after warning and knowledge of the risk, suitable means are not used to avert a catastrophe so shocking. I need scarcely point to the practical lesson which these facts inculcate. When- ever puerperal fever is rife, or when a practitioner has attended any one instance of it, he should use most diligent ablution ; he should even wash his hands with some disinfecting fluid, a weak solution of chlorine for instancel he should avoid going in the same dress to any other of his midwifery patients: in short, he should take all those precautions which, when the danger is understood, common sense will suggest, against his clothes or his body becoming a vehicle of contagion and death between one patient and another. And this is a duty so solemn and binding, that I have thought it right to bring it distinctly before you. In these days of ready invention, a glove, I think, might be devised, which should be impervious to fluids, and yet so thin and pliant as not to interfere materially with the delicate sense of touch required in these manipulations. One such glove, if such shall ever be fabricated and adopted, might well be sacrificed to the safety of the mother, in every labour. Should these precautions all prove insufficient, the practi- tioner is bound, in honour and conscience, to abandon, for a season, his vocation. [The connection between puerperal peritonitis and erysipelas has recently attracted a good deal of discussion. In a large number of instances, it has been shown that the two diseases prevail simultaneously and in the same localities ; and facts have been adduced, which wo tiil 3m 734 DISEASES OF THE ABDOMEN. even appear to prove that a contagion of some kind may be communicated from a patient labouring under erysipelas to the parturient female, and induce in her an attack of puerperal fever. Until, however, a greater number of facts have been accumulated, and the whole .subject more closely investigated, it will be premature to draw any positive conclusions. — C] That variety of peritonitis which results from perforation of the stomach or intes- tines, and the effusion of their contents into the cavity of the belly, is full of interest. The inflammation is violent in degree ; universal (generally) in extent : and almost always fatal. The attack is characterized by its suddenness. All at once intense pain arises in some region of the abdomen, which soon becomes tender in every part. The pain is incapable of removal, and generally even of mitigation, by medicine, and death takes place in a short time. These are the general features of such cases. Occasionally, the symptoms follow some different order. Thus, I have seen a case in which no pain was complained of, and the source of the inflammation was not suspected until the dead body was examined. This was a case oi fever ; and it had been attended with much stupor, which was probably the reason that no indication of suffering was made by the patient. Occasionally, but that is uncommon, the pain intermits. For the most part, however, it resists all treatment, and ceases only with life, or a short time before life is terminated. Most of the instances of this kind of peritonitis that I have witnessed have resulted from perforation of the ileum, in the progress of continued fever. You are already aware, that the glandulfe agminatae, which are found only in that bowel, and the glanduloe solitarise, which are scattered over nearly the whole inner surface of the alimentary tube, are very liable, in continued fever, to inflammation, sloughing and ulceration : and sometimes the ulcers go through : the contents of the gut are poured into the cavity of the serous membrane, and intense inflammation is lighted up. I purposely abstain from going into any particulars respecting these ulcers. We are no further concerned with them at present than as they furnish the channel by which the cause of the peritoneal disease is introduced. Once, and once only, as I stated before, have I known perforation occur from th-e extension of scrofulous ulceration of the same glands in phthisis. In general, in that disease, the ulcer runs a much slower course. As it approaches the peritoneum, circumscribed chronic inflamma- tion is set up in that membrane ; lymph is thrown out ; and the bowel becomes adherent to some other portion of the canal, or to some of the other viscera of the abdomen. In this way the perforation is prevented ; or, should it take place, the escape of the contents of the bowel into the peritoneal sac is prevented. Occasion- ally, when two portions of the tube thus adhere together, a communication is formed between them, and the contents of the intestine either reach an advanced point of their stated journey by a short cut, or are carried back again perhaps to a spot which they had already passed. A very curious instance of this latter event has been described by Dr. Abercrombie. A man, fifty-six years old, who had shown no signs of serious illness, but had laboured under impaired appetite, languor, and occasional pain in the abdomen, for two or three weeks, was suddenly seized, while out walking, with vomiting ; and he ob- served that what he brought up was stercoraceous ; and this occurred again and again, at variable intervals ; the matter vomited being distinctly fecal, and sometimes so solid that he was obliged to swallow warm water to soften it, that it might be ex pelled from the stomach more easily. He never vomited his/oo(^; and no tumour or other sign of organic disease, could be detected by external examination. He lived about three months, and died at last of exhaustion ; and then it was discovered that the stomach and the transverse arch of the colon were adherent to each other, and that a ragged aperture of communication between them existed at the place of adhesion. It is a curious fact, that the vermiform appendage of the caecum is not unfrequently tne seat of a penetrating ulcer. I have traced little groups of glands in that slender tube : and I have known perforation to happen from the specific ulceration of con- tinued fever ; and from the accidental ulceration caused by a cherry-stone lodged ihetfl PERITONITIS FROM PERFORATION. 7i{5 [Many cases are related of peritonitis from ulceration of the apendicula vermiformis caused by the impaction of some foreign substance within its cavity. A veiy interesting case of the kind is detailed by Dr. Pepper, in the Transactions of the College of Physicians of Philadelphia, vol. i., p. 296, in which a grape seed had passed into the apendicula, and was the cause of its ulceration and perforation. — C] Sometimes it is the stomach that is perforated, either by a common or by a spe- cific ulcer ; and the symptoms are exactly the same as when the boivel gives way. Sudden, unremitting pain, tenderness, and tympanitic distension of the abdomen ; and early death. Perforating ulcers of the stomach are of various kinds. It is not uncommon to find one small roundish hole, with edges as smooth and clean as if a piece of the stomach had been cut out by a punch, and without any surrounding hardness, or other mark of disease. Occasionally the orifice is more irregular, and occupies the centre of a thickened and indurated patch of the mucous membrane. Several in- stances of this sort of perforation have occurred under my own eye ; two within the last fourteen months (1839). Almost all the patients have been young women, plump, and in good condition ; who, up to the moment of the fatal seizure, either seemed to enjoy perfect health, or, at most, had complained of slight and vague feeHngs of dyspepsia. Ulcers of the stomach are, however, mostly chronic ; and the diseased viscus is commonly fenced about and protected by adhesion to the neighbouring parts, before its coats are completely penetrated by the ulcer. You are probably aware that this happened in the body of Napoleon Bonaparte. He died of cancer of the stomach. That organ was strongly adherent to the concave surface of the left lobe of the liver, which formed a part of the wall of the stomach ; and this adhesion, no doubt, prolonged his life. Usually the actual perforation, in cases such as we are now considering, takes place merely from the natural progress of the ulcer; but sometimes it would appear that the thin membrane which remains is broken by some accidental force applied to it. Thus the symptoms have immediately followed the act of vomitinof, brought on by an emetic. Bouillaud relates an instance in which the perforation happened while the patient was straining at stool ; and it is conceivable enough, that rough pressure of the abdomen might complete the rupture, when the ulcer had already eaten through all the coats of the bowel except its peritoneal coat. Less commonly than this, in my experience at least, the peritonitis is set up by the escape of urine from the urinary bladder, through the extension of an ulcer, or from a forcible rupture of that bag by a blow or a fall, when it was distended with urine. Rupture of the gall-bladder, whether by violence or from ulceration, has the same results ; so also has, in general, the rupture of the uterus, which sometimes takes place during the efforts of parturition. Abscess of the liver, bursting into the peritoneum, is another occasional source of severe and fatal inflammation of that membrane. Acute and general peritonitis sometimes arises, also, in consequence of penetration from without ; i. e., it succeeds the puncture made by the trocar in the operation of tapping the belly : and these cases, too, are almost all of them mortal : chiefly, I presume, because, in nine instances out of ten, they occur in an unhealthy and debilitated subject. I formerly offered you some observations respecting a form of hysteria which very closely mimics peritonitis, and would most certainly deceive a medical man who was not on his guard against it. We judge by the age and sex of the patient somewhat; by the presence of hysteria in other forms, or of the hysteric diathesis; by the ex- cessive tenderness of the abdomen, or rather of its surface ; by the co-existence of the same exquisite sensibility in other parts ; and by the incongruity and shifting character of the symptoms. The pulse and the tongue will perhaps be natural, while the abdominal irriuation is at its height. Forewarned, you will seldom find much dif- ficulty in establishing the diagnosis. Of the signs by which peritonitis may be dis- '.inguished from enteritis, I shall speak when I come to the latter disease. 736 ACUTE PERITONITIS. LECTURE LXVI. Treatment of Acute Peritonitis ; Bleeding, Mercury, Opium . Ch ronic Peritonitis -, Gramdor Peritoneum. Ascites ; Ovarian Dropsy ; Diagnosis of these diseases. Other forms of Abdominal Dropsy. Acute peritonitis, in its simple form, is always a dangerous, yet frequently a manageable disease. When it is complicated with other and earher organic mischief, and especially when it has been excited by the entrance of foreign matters into the civity of the belly, it is all but hopeless under any treatment. In speaking of the mode of cure, I have again to repeat, mutatis mutandis, the grand remedies for inflammation, and particularly for the adhesive inflammation proper to serous membranes : blood-letting; mercury. It is of the greatest importance in this, as in many other cases of inflammation, that the blood-letting should be performed early. You must not be deterred from bleeding by the mere smallness of the pulse : a quality which I have frequently shown you to be characteristic of acute inflammation within the abdomen ; and which, in the disease now in question, is often present from the very beginning. If the pulse be wiry and hard, we disregard, in these cases, its smallness. Not uncom- monly it is rendered more full, as well as softer, by venesection ; and this, when it happens, gives assurance of the propriety of that measure. Topical blood-letting is of much efficacy — of greater efficacy perhaps than in most other forms of abdominal inflammation. Cupping is out of the question, from the tender state of the abdomen. But in adults, after a full bleeding from the arm, such as has produced some sensible impression upon the circulation, or brought the patient to the vertre of syncope, the surface of the belly should be covered with leeches. From twenty to forty may be applied at once ; and sometimes this will make any further loss of blood unnecessary. But in severe cases, you may expect to find that repetitions of at least the local bleeding will be requisite. After the leeches have fallen off, a light poultice may be laid over the abdomen ; or it may be assiduously fomented with flannels wrung out of hot water. These means will encourage the bleeding from the leech bites ; and are generally found to afford great comfort to the feelings of the patient. Cold applications have been recommended by some practitioners of high authority. Dr. Sutton injected cold enemata. and applied cloths, made wet with cold evaporating lotions, to the abdo- men with good effect : and Dr. Abercrombie has since reported favourably of the same kind of treatment. However, I should think this a more precarious plan than the opposite : and I have always observed so much relief to be given by warm epithems, that I have never had the inclination, or the courage, to employ cold. It is extremely desirable, in these cases, to obtain as speedily as possible the specific influence of mercury upon the system ; by calomel and opium, or by inunction. It cannot be necessary that I should again go over in detail the means of following out this indication ; but it is an indication which we must diligently pursue. The treatment of puerperal peritonitis is much more uncertain and difficult : for ■ his reason, that it springs out of an antecedent morbid condition more deeply seated, more o-enerally diffused, and less accessible to remedies, than itself. Whenever in- flammation arises here and there in the body, in consequence of a vitiated state of the blood, we have not only the inflammation itself to deal with, but its physical cause also, which may still be in uncontrolled operation. Dr Fercjuson justly remarks that "inflammation being made up of vascular and of nervous action, of "the afflux of blood to a part, and of pain, it is not irrational to jict on both the elements of the malady at the same time, or in periods shortly con- secutive of each other." "The abdominal pain that occurs in puerperal fever is accompanied by two very different states of constitution : one in which little or no ACUTE PERITONITIS. 737 depletion is borne, another in which reHef is obtained only by very large evacua- tions of blood." Between these two there is every conceivable gradation. " In no malady are a cautious boldness, and a sagacious adaptation of remedy to constitu tional power, more imperatively demanded." " If lurge bleeding be determined on, it must, to be beneficial, be resorted to within the first twenty-four hours from the attack. In the second stage of the disease it often produces, rapidly, a fatal result." In ambiguous cases he gives ten grains of Dover's powder, and covers the whole of the abdomen with a large linseed-meal poultice, sufficiently thick to retain warmth for four hours. At the end of that time, if the symptoms are alleviated, "ten grains more of the Dover's powder, and a fresh poultice, should be prescribed. If within four hours from this second medication, the practitioner is not satisfied that the malady is yielding, he must at once resort to depletion." Of all the means we possess of arresting this malady, bleeding, general or topical, is, in Dr. Ferguson's experience, by far the most extensively applicable. " But," he says, " while I admit this, I am equally certain that large bleeding has not been borne in this complaint, generally speaking, during the last twelve years." Another most important truth enunciated by our professor is, that "epidemic puerperal fever has, invariably, the character common to the ordinary fevers raging with it: if the latter require depletion, the presumption is that the former will also." Undoubtedly the very same species of febrile disease is variously aflected by a given remedy in different places: and during diflferent periods in the same place. There is such a thing as an epidemic state of the human constitution, gradually pro- duced by a gradual fluctuation in the influences whereby communities of men are surrounded and impressed. The fevers that were cured in London ten or fifteen years ago by copious blood-letting, would now be rendered by that measure, carried to a like extent, irretrievably mortal. There is scarcely a more important object of study to the practical physician than this different capacity, exhibited by the average of constitutions at different limes and seasons, of bearing active depletion. "Nihil mihi prius est," says the wary Sydenham, "quam quando novoe febres grassari in- cipiant, cunclari paulisper, et ad magna prsesertim remedia non nisi suspenso pede, ac tardius procedere ; diligenter interim illarum ingenium atque morem obser- vare, quibus itidem prsesidiorum generibus ^gri juventur vel lasdantur, ut quam pri- mum his repudiatis, illis utamur." The exciting cause of the fever remains the same ; the system upon which it operates undergoes trom time to time great changes ; which are brought to light partly by the altered phenomena of the disease, partly and chiefly by the effects of remedial measures. Unless you bear these differences in mind, you will be perplexed and disheartened bj the discrepant accounts given by competent and faithful observers respecting the success of difl"erent or even opposite plg,ns of treatment, in the same complaint. Most writers, whose works I am acquainted with, recommend purgatives as highly serviceable in peritonitis. I do not think the good which the in all cases. When the symptoms are the most violent, and the progress of th'j complaint is the most rapid, the peritoneal coat of the stomach is usually, I belie /e, more or less implicated. Intense inflammation of the stomach may be expected to be rapid in its progress. I' mav destroy Hfe within twenty -four, or even twelve hours. When it is fatal, it GASTRITIS. 755 generally is so within a few days ; and death takes place by fainting : with a remis- sion of the pain, sometimes verj sudden, and sometimes occurring only just before dissolution. But as idiopathic gastritis is rave, fatal idiopathic gastritis is, of course, still more so. Louis states, that during six years' experience at La Charite, in which period he noted the details of 6000 cases of disease, and of 500 dissections, he did not meet with a single instance of fatal idiopathic gastritis. The subject derives almost all its importance, therefore, from its connection Avith poisoning ; and the many mteresting points of inquiry which arise out of that connection will be brought before you by the Professor of Forensic Medicine. This consideration is a great satisfac- tion and relief to me ; because I find that the limits of my own course will not permit me to go into any detail in this matter. The morbid appearances to be looked for after death by acute gastritis, are redness of the mucous membrane, softening, sloughing, and even (after the action of strongly corrosive poisons) perforation of all the coats of the stomach. I wish particularly to caution you against being misled by mere redness of the interior of the stomach ; or of the inner surface of the alimentary canal in general ; or of any mucous membrane ; and indeed I may add, of any serous membrane also. Redness and inflammation have been made, too often, convertible terms. Persons finding the inner surface of the stomach red, have instantly concluded, from that cir- cumstance, that suspicions of poisoning, which had arisen, were well founded. We are indebted to Dr. Yclloly, in the first instance, and to M. Billard and some other Frenchmen, in the second, for correcting this error — an error which not only was of importance in questions of imputed poisoning, but has run through and vitiated almost the whole of pathology, both lately and heretofore. iVIistaking mere redness for evidence of inflammation, Cullen divided gastritis into two species — one of which he called gastritis erythematica ; and he inferred from the observation of cases in which redness of the membrane had been met with after death, that this peculiar kind of inflammation of the mucous coat of the stomach might take place, without fever, pain, or vomiting, or any other symptom indicative of gastritis : whereas it is almost certain that, in the cases to which he refers, there really was no inflammation at all. So also Morgagni, puzzled by intestinal vascularity, was disposed to attribute the absence of pain, in what he beheved to have been inflammation of the bowels, to a paralytic afl!ection, which blunted the sensibility of the parts ; and Haller con- ceived, from so constantly meeting with this vascularity in his inspections of the body, that inflammation of the bowels was almost always present in fevers of all kinds ; and was frequent in every other complaint. And the same doctrine has been strenu- ously inculcated of late years, as I dare say you know, by Broussais, in France, and adopted by a Tast host of his disciples. Finding the lining membrane of the stomach and intestines red and vascular in most of the bodies of patients who had died of fever, Broussais concluded that fever depends, in all cases, upon inflammation of the gastro-enteric mucous membrane. You will perceive that this doctrine must exer- cise a vast influence upon the practice of those who entertain it. If inflammation constitute an essential part of any disorder, it follows that the remedies of inflamma- tion will be adapted to that disorder ; and thus, even so slight a mistake as that may appear to be, against which I am now cautioning you, of regarding every surface which is red as being inflamed also, may lead to very mischievous views in respect to treatment. The redness that is zndependent of inflammation may be of various kinds ; but the principal cause of it is venous congestion. " The appearances of vascular full- ness (says Dr. Yelloly) in the villous coat of the stomach, whether florid or dark- coloured, in distinct vessels, or in extravasations of difl^erent sizes, are not to be regarded as unequivocal marks of disease, inasmuch as they occur in every variety of degree and character, under every circumstance of previous indisposition, and in situations where the most heakhy aspect of the organ may be expected." To the truth of this statement I can bear witness, having at one time of my hfe carefully examined, with a view to this matter, a great number of stomachs in succession, iu the dead-housG )f a large hospital. " The vascularity (according to Dr. Yelloly) is entirely vennus, and depends on a power capable of being exercised on the artery 756 GASTRITIS. itself at the close of life, which carries on the blood to the veins, after the further supply of fresh blood from the heart is stopped. The branched or stellated form of vessels, under which the vascularity usually appears, is capable of being imitated, either by injecting the veins with fine injection, or by forcing back with the finger, or the back of a scalpel, the blood from the larger branches of veins into the smaller." " And this vascularity soon becomes difl^used redness, by transudation of the blood through the coats of the containing vessels, just as happens with the bile in the gall bladder." Redness, from mere repletion of the smaller veins, is usually extensive and unde- fined ; except that, being influenced by the force of gx-avity, it settles into the most depending parts of the organ, which are either its exclusive seat, or, at any rate, are of a deeper colour than the parts more elevated. It is attended with an empty state of the arteries, and with a full state of the larger veins. Hence, the condition of the venous and arterial trunks, and especially of the vena portse, should, in doubtful cases, be ascertained before the main blood-vessels are laid open and drained of their contents. The redness that belongs to inflammation is generally circumscribed, and of limited extent ; it occupies indiscriminately the upper or the lower side of the tube (for these remarks apply alike to the stomach and to the intestines) ; it is attended with some fullness of the corresponding arterial trunks: and it may or may not be coincident with comparative emptiness of the venous system within the abdomen. Much will depend, in this respect, upon the mode of dying, as I have fully explained to you on a former occasion. You will please to remember, then, in all your future investigations into morbid anatomy, that it is generally difficuk, and often impossible, to determine, from the aspect of the vessels of a dead part, from its redness, that inflammation had been present in that part during life, unless the unequivocal products or effects of inflam- matory action are present also. A much more certain evidence of inflammation of the mucous membrane of the stomach and intestines, is its softening. This can be attributed to nothing else, except it be to decomposition ; and it is well known that this membrane is slow and late in passing into the state of putrefaction after death. To certain questions respect- ing perforations of the stomach, I shall by and by return. I say that gastritis is most commonly the eflect of poisons applied to the mucous surface of the stomach ; but I must include under that head certain substances which, to most people, are not poisonous or injurious at all, and which only become so to some persons under particular circumstances. Thus, large draughts of cold drink, taken when the body is hot, and rapidly parting with its heat, and especially large draughts of cold sour liquors, as cider or stale beer, are apt to give rise to acute gas- tritis. Another occasional cause of gastritis is the ingestion of very large quantities of food at one time, especially during convalescence from any serious disorder. It is an exceedingly curious fact, too, but one which I merely mention without dwelling upon, that certain poisons introduced into the body through some other channel, will cause mflammation of the mucous membrane of the stomach, with which they have not been in contact. Corrosive subhmate and arsenic excite inflammation, with ulceration or sloughing of the mucous membrane, even when they are merely rubbed, in a certain quantity, upon the skin, or when they are inserted into the rectum. The treatment of acute gastritis is simple. The chief nicety respects the employ- ment of blood-letting. Early in the disease, if the pain be severe, you must trylhe fiffect of venesection, notwithstanding the smallness and feebleness of the pulse. How much blood you are to abstract cannot be told beforehand. Take away a small teacupful, keeping, meanwhile, your finger on the wrist. If the beat of the artery does not grow weaker, and still more if it becomes fuller and stronger, go on with the bleedmg, and take another cupful, and another, according to the circumstances of the case and to the effects produced. Apply leeches to the epigastrium, and cover ihe bleeding bites with a soft, light pouUice. Keep the patient as strictly as you can in the horizontal posture ; in other words, see thft thr depressing influence of tbn) CHRONIC INFLAMMATION OF THE STOMACH. 757 Msi lise upon the action of the heart is not aided and augmented by the position of the body. If cold water is retained, that is the best medicine which you can give by the mouth; purgatives so administered would be almost sure to be rejected, and, if nut rejected, they would be likely to increase the existing inflammation of the organ. En-imata are, however, extremely useful: of warm water, if the bowels are not mu(,h confined ; of purgative materials, if they are. After the intestines have been thuij cleared — or when they are loose and irritable — opiate injections (thirty or forty drops of laudanum, with three or four ounces of starch or gruel) do much good. They often have a very tranquillizing effect upon the irritable stomnch, and check the vomiting. These measures are to be pursued until the inflammation has subsided. When any corrosive substance has been swallowed, I scarcely need say that painj should be taken to remove it as speedily as possible from the stomach, or to admin- ister such remedies as are known to be capable of decomposing the poison, or of affording a specific antidote to it. Not that the stomach-pump should be employed in such cases, as it too often is. These, however, are points that must be fully treated of in the lectures on forensic medicine, and therefore I shall dwell upon them no longer here. Chronic inflammation of the stomach is probably a very common disorder. It does not put life in immediate jeopardy, and it is often recovered from. It deranges, however, the functions, and perverts the feelings of the stomach : it gives rise to the manifold and multiform symptoms of dyspepsia. But dyspepsia, with its manifold and multiform symptoms, may be, and often is, entirely independent of inflamma- tion. You see, then, why the efTects of chronic gastritis are various, and why the symptoms that are supposed to denote its presence are apt to be obscure, uncertain, and equivocal. I intend, before I quit the subject of the stomach, to investigate the principal circumstances that mark its functional disorders, and to describe the means which we sometimes find effectual for their relief. I shall therefore restrict myself at present to a kw points which seem to have been fairly ascertained respecting chronic gastritis. We know that chronic inflammation had been going on in the stomach when, after death, we see that its coats are thickened, or when we perceive that a portion of one or more of them has been removed by ulceration. It is not at all uncommon to find the mucous membrane of the stomach, over a larger or smaller space, thick, granular, uneven, and of an unnatural colour. Gray, or slate-coloured, it often is. This slate-colour is much dwelt upon by the French writers, as being a sure and unequivocal impress of chronic inflammation. The colour proceeds, I believe, from the operation of the gastric acids upon the blood, which, under habitual congestion or slow inflammation, is detained in the vessels of the altered part. The ulcers that result from chronic inflammatory action are usually small, varying from the size of a split pea to that of a shilling; sometimes with no surrounding vascularity or thickening at all, but looking exactly as though a piece of the mucous membrane had been struck out by a stamp ; sometimes with rounded and elevated edges only; and sometimes they occupy patches of thickening and induration of the parietes of the stomach. There may be one solitary ulcer, or a few, or many. It is seldom, however, that they are numerous. Ulcerative disease of the stomach may prove fatal in various ways. The ulcer may penetrate as far as the peritoneum, and excite inflammation of that membrane, whereby the stomach becomes adherent to the neighbouring parts. In these cases, prior or subsequently to adhesion, death may at length ensue, from gradual ex- haustion and protracted suffering. If an ulcer happen to lie over the track of a large blood-vessel in the stomacn, it may eat its way into that vessel, and give rise to fatal hemorrhage. Or the ulcer may perforate the walls of the stomach, without any previous adho sion, and suffer the food, or the secretions of the stomach, to pass into the peritoneal cavity, where intense inflammation is lighted up, and the patient soon perishes So 758 CHRONIC INFLAMMATION Or the ulcers may at length heal. Of this we are certain, because, we sometimes find cicatrices marking the spots which the ulcers had occupied. The symptoms of chronic gastritis are pain or uneasiness in the epigastrium, increased by pressure ; increased also on the introduction of food, or perhaps fell only while digestion is in progress; flatulence and eructation; vomiting of mucus, and of the meals; loss of sleep; languor and debility. Not that even these symptoms are constant in all cases. Sometimes there is no actual pain, but a sense of heat or of acidity. The vomiting, too, in the outset, is occa- sional only ; and is then attributable, often, to some error or imprudence in respect to diet. And sometimes the complaint may run nearly its whole course, up to one of the fatal terminations just now mentioned, with scarcely any other sign of its ex- istence than uneasiness after meals, which subsides in two or three hours entirely. With the local symptoms I have been describing there are often conjoined some acceleration and hardness of the pulse : more or less thirst : a dry skin : scanty and deep-coloured urine: a red tongue; red especially at its tips and edges; patchy and fissured perhaps ; or smooth and glossy, like a slice of raw meat. The throat is also frequently tender; and the phaiynx and palate unnaturally vascular. In attempting to relieve or cure chronic gastritis we have to guard against apply- ing anything to the inflamed surface which may be likely to add to the existing mischief, or which has been found, upon trial, to give pain. We employ at the same time the ordinary remedies of chronic inflammation. Leeches may be put upon the epigastrium, and repeated day by day, or every other day, in small num- bers, so long as there is much tenderness on pressure. When the tenderness is less, counter-irritation is very useful: repeated blisters; or friction with the tartar emetic ointment over the region of the stomach. But, after all, the main dependence must be placed in the due regulation of the food, which should be mild and unstimulating in quality, and sparing in quantity. The well-known farinaceous substances which figure in the bill of fire of a sick chamber : arrow-root ; sago ; tapioca ; gruel ; milk also ; and jellies. And even these bland articles of nourishment must be given in moderation, so as neve to distend the stomach or to stretch its coats by their bulk, or to overtask its power of digestion. It is difficult, in such cases, to give precise rules for the management of the diet, which must be left to the common sense of the practitioner. With respect to internal medicines, they must be such as appear to be called for by ])arlicular symptoms. Of these, which are in fact the symptoms of dyspepsia, I postpone the further consideration. Appropriate means must be used for the regu- lation of the bowels : mild laxatives by the mouth ; emollient or purgative enemata by the rectum. When I say that a good deal must be left, in these cases of chronic disease o-f the stomach, to the judgment and good sense of the practitioner, I am forcibly reminded of a most striking and instructive case, beautifully told by the celebrated Dr. Wm. Hunter, in the sixth volume of the Medical Observations and Inquiries. The perusal of that history has afforded me hints upon which I have ofien acted with great advantage to my patients, and with some credit to myself. As I doubt whether many of you would find immediate opportunity or leisure for referring to the narra- tive, and as I should spoil it by attempting to give you an abstract of it, I am tempted to read it here in Dr. Hunter's own words. " Many years ago (he says) a gentleman came to me from the eastern part of the city, with his son, about eight or nine years old, to ask my advice for him. The complaint was pain in the stomach, frequent and violent vomitings, great weak|[iess, and wasting of flesh. I think I hardly ever saw a human creature more emaciated, or with a look more expressive of being near the end of all the miseries of life. The disorder was of some months' standing, and from the beginning to that time had been daily growing more desperate. He was at school when first taken ill, and concealed nis disorder for some time : but growing much worse he was compelled to complain, and was brought home to be more carefully attended. From his sickly look, his v?tal loss of appetite, besides what he said of the pain which he suffered, but espe OF THE STOMACH. 759 cially from his vomiting up almost everything which he swallowed, it was evident that his disorder was very serious. "Three of the most eminent physicians of that time attended him in succession : and tried a variety of medicines without the least good effect. They had all, as the father told me, after sufficient trial, given the patient up, having nothing further to propose. The last prescription was a pill of solid opium ; for in the fluid state, though at first the opiate had stayed some time upon his stomach, and brought a temporary relief, it failed at length, and like food, drink, and every medicine which had been given, was presently brought up again by vomiting. The opiate ^;z7/ was therefore given in hopes that it would elude the expulsive efforts of the stomach. It did so for a time ; but after a little use, that likewise brought on vomiting. Then it was that his physician was consulted for the last time, who said that he had nothing further to propose. ♦' Though at first the boy professed that he could assign no cause for his complaint, being strictly interrogated by his father, if he had ever swallowed anything that could hurt his stomach, or received any injury by a blow, or otherwise, he confessed that the usher in the school had grasped him by the waistcoat at the pit of the sto- mach, in a peevish fit, and shaken him rudel}^ for not having come up to the usher's expectation in a school-exercise. That though it was not very painful at the time, the disorder came on soon after. This account disposed the father to suspect that the rude grasp and shake had hurt the stomach. With that idea he brought him to me, as an anatomist, that an accurate examination might if possible discover the cause or nature of the disorder. " He was stripped before the fire, and examined with attention in various situa- tions and postures; but no fulness, hardness, or tumour whatever could be discovered ; on the contrary, he appeared everywhere like a skeleton covered with a mere skin ; and the abdomen was as flat, or rather as much drawn inwards, as if it had not con- tained half the usual quantity of bowels. "Having received all the information that I could expect, and reflected some little time upon the case, I wished to speak with the father alone, in another room ; and to give my patient some employment as well as refreshment, asked him to lake a liule milk in the mean time. But his father begged that taking any thing into his stomach might be put off till he got home, because he was certain that it would make him sick ; ' just before we set out (said he) I gave him a little milk ; but he was sick, and brought it all up in the coach, before we had got many paces from the house.' " In the adjacent room I said to the father. This case, sir, appears to me so despe rate, that I could not tell you my thoughts before your son. I think it most probable, no doubt, that he will sink under it ; I believe that no human sagacity or experience could pretend to ascertain the cause of his complaint : and without supposing a par- ticular or specific cause, there is hardly any thing to be aimed at in the way of a cure. Yet, dreadful as this language must be to your ear, I think you are not to be without hope. As we do not know the cause, it may happen to be of a temporary nature, and may of itself take a favourable turn ; we see such wonderful changes every day, in cases that appear the most desperate, and especially in young people. In them the resources of nature are astonishing. "Then he asked me if T could communicate any rules or directions, for givincr l.im a better chance of getting that cure from nature, which he saw he must despair of from art. " I told him that there were two things which I w^ould recommend. The first was not so important indeed, yet I thought it might be useful, and certainly could do no harm. It was to have his son well rubbed, for half an hour together, with warm oil and a warm hand, before a fire, over and all around his stomach, every morning and evening. The oil, perhaps, would do little more than make the friction harmles;-;, as well as easy ; and the friction would both soothe pain, and be a healthful exercise to a weak body, "The second thing that I had to propose, I imagined to be of the utmost conse- quence It was something which I had particularly attended to in the disorders o ' 760 CHRONIC INFLAMMATION the stomach, especially vomitings. It was, carefully to avoid offending a very weak stomach, either with the quantity, or quality, of what is taken down ; and yet to get enough retained for supporting life. I need not tell you, sir, said I, that your son cannot live long, without taking so7ne nourishment ; he must be supported to allow of any chance m his favour. You think that for some time he has kept nothing of what he has swallowed ; but a small part must have remained, else he could not have lived till now. Do you not think, then, that it would have been better for him if he had only taken the very small quantity which remained with him, and was converted to nourishment '. It would have answered the end of supporting life as well, and perhaps have saved him such constant distress of being sick, and of vomit- ing. The nourishment which he takes should not only be in very small quantity at a time, but in quantity the most inoffensive to a weak stomach that can be found. Milk is that kind of nourishment. It is what Providence has contrived for support- ing animals in the most tender stage of life. Take your son home, and as soon as he has rested a httle, give him one spoonful of milk. If he keeps it some time, without sickness or vomiting, repeat the meal, and so on. If he vomits it, after a little rest, try him with a smaller quantity, viz., with a dessert, or even a leaspoonful. If he can but bear the smallest quantity, you will be sure of being able to give him nourishment. Let it be the sole business of one person to feed him. If you succeed in the beginning, persevere with great caution, and proceed very gradually to a greater quantity, and to other ^uid food, especially to what his own fancy may invite him ; such as smooth gruel, or panada, milk boiled with a little flour of wheat or rice ; thin chocolate and milk ; any broth without fat, or with a little jelly or rice or barley in it, (fee. &c. " We then went in to our patient again ; and that he might be encouraged with hope, and ac\ his part with resolution, I repeated the directions with an air of being confident of success. The plan was simple, and perfectly understood. They left me. " I heard nothing of the case till, I believe, between two and three months after. His father came to me with a most joyful countenance, and with kind expressions of gratitude told me, that the plan had been pursued with scrupulous exaclrness, and with astonishing success ; that his son had never vomited since I had seen him; that he was daily gaining flesh, and strength, and colour, and spirits, and now grown very importunate to have more substantial food. I recommended a change to be made by degrees. He recovered completely ; and many years ago he was a healthy and a very strong young man." [Acute gastritis is a disease of by no means unfrequent occurrence during infancy, and then frequently causes a softening of the mucous membrane of the- stomacli, to which much attention has of late years been directed by the observations of Cruveilheir, Louis, Laisne, Billard, and others; by several of whom it is described as a specific disease. It is to this particular lesion that we wish to direct attention in the pfresent note, referring the reader fur information on the subject of the inflammatory affections of the stomach generally, that occur during the early period of life, to the Editors Treatise on the Diseases of Children. The symptoms of the particular form of acute gastritis, to which we have reference, are ■'ery accurately described by Billard. The disease commences with tlie phenomena of a violent inflammation of the stomach ; as tension of the epigastrium, which is painful to tlie touch ; frequent vomiting, not only of the milk and drinks taken, but also of a green or yellow fluid; the vomiting occurring every moment, without any reference to the period when the child has taken food or drink. There is, sometimes, diarrha'a, varying in diflerent subjects, and returning after having ceased for a day or two; the matters discharged from the bowels being often green, and similar to those brought up from the stomach by vomiting. The extremities are cold; the pulse is generally irregular ; the countenance has a permanent expression of sufiering, the face remaining furrowed, as if the infant were crying; the cry is expressive of pain ; the respiration is interrupted, and the general agitation so great that Ihe existence of a cerebral affection might be suspected. At the end of six, eight, or fifteen (lays 'he patient sinks exhaiisted from the want of sleep, constant vomiting, and pain : in very young infants the disease is attended with little or no fever. Dr. Iselin, of IMuhlheim, who had an opportunity of studying the disease during its exten- sive prevalence as an epidemic at Gottingen, gives the following description of its phe- ocmena : Previous to the attack, the child is often, for several days, unusually restless and fretful — OF THE STOMACH. 761 finally, a decided febrile attack occurs, attended with a quick pulse, hot and dry skin, intense thirst, sleeplessness, and constant vomiting, increased upon food or drink being taken into the stomach. To these symptoms is speedily added a copious diarrhoea — the dejections being, at first, of a grayish colour, and of some degree of consistence, but subsequently of a yellow- ish or greenish serum, decidedly acid. The evacuations are usually preceded by contortions of the countenance indicative of pain, which are likewise induced by pressure on the abdo men. The latter is always much, often enormously distended, and its temperature, especially at the epigastrium, is often considerably elevated, while the extremities are cool, or even de- cidedly cold. The patient exhibits great prostration of strength, and a profuse partial per- spiration soon breaks out, particularly about the head. The disease varies in its duration — proving fatal, in some cases, within twenty-four hours, and in others, not until after a continuance of several days, or even weeks. In the more violent cases, its onset is very sudden — and it is attended with frequent faint- ing, and an irregular and very quick pulse — the eyes and features are sunken — the body is bathed in a profuse perspiration. Convulsions, more or less severe, often attended with stra- bismus, sooner or later, occur ; the face becomes of a bluish tint; the diarrhoea or vomiting, or both, soon become suspended ; the accessions of fainting and convulsions become more frequent, and during one of these, death usually takes place. The intumescence and augmented heat of the abdomen, particularly of the epigastric region, and the coldness of the extremities, are, according to Dr. Iselin, to be considered a3 among the most constant and characteristic symptoms of the disease. The agonized expres- sion of countenance, and sunken appearance of the eyes, are likewise almost invariably pre- sent, even from its earliest stages. The age at which this form of gastritis usually occurs is within the first year ; it is not, however, necessarily restricted to this period of life. The most constant lesion discovered after death is a softening of the mucous membrane of the stomach, and often of the small and great intestines; the membrane being reduced to a disorganized and gelatinous pulp ; or, the softening may extend to all the tissues of the stomach, rendering them liable to be perforated by the slightest force. In the stomach these softenings occur especially, according to Baron, Billard, and Iselin, at the great curvature, sel- dom extending beyond the most depending parts. Distinct traces of inflammation are occa- sionally observed, surrounding the softened parts, and patches of inflammation often exist, also, in diflerent portions of the intestinal canal, especially in the small intestines. The pa- rietes of the stomach frequently present a serous infiltration. Carswell, Burns, Gairdner, Carwell, Hope, and other pathologists, deny the connection in tliese cases, of the softening of the gastro-intestinal mucous membrane and inflammation, and maintain that, in general, it is to be viewed as a cadaveric phenomenon, resulting from the action of the gastric juice upon the tissues of the stomach ; others, with Jaeger, Zeller, and Camerer, refer it to a paralysis of the nerves of the stomach, with increased acidity of the gastric juices, by which the tissues of the organ are dissolved during the lifetime of the pa- tient. A somewhat similar opinion is entertained by Laisne, Chaussier, Desbarreaux, Ber- nard, and others. Without denying that the softening observed after death in the stomachs of children may be, in many cases, strictly a cadaveric phenomenon, and that, in other cases, it may result, during the lifetime of the patient, from other causes than inflammation, we are, nevertheless, well convinced from the result of repeated and cautious observations, that the gelatinous softening so frequently met with in the stomach of those infants who die after exhibiting all the symptoms of acute gastritis, is invariably the efl'ect of an intense inflamma- tion commencing in the mucous tissue of the organ. Softening of the parietes of the stomach, as well as of the intestines, unquestionably often takes place previously to the death of the patient, in cases where it cannot be sujjposed to be trie result of inflammation. Thus, we not unfrequently observe in infants brought up by the hand, or improperly fed subsequently to weaning, a loss of appetite, peevishness, great rest- lessness, and want of sleep ; the tongue becomes coated with a layer of white or yellowish mucus ; and in some instances aphthte appear upon the parietes of the mouth, and the breath has usually a decidedly acid odour. There are a constant diarrhcea, and intense thirst. The diarrhcea, after a time, frequently diminishes, or entirely ceases — but soon returns again with increased violence — the discharges being a thin serous fluid of a yellow or greenish hue, and having a very strong acid smell ; great emaciation and exhaustion soon ensue ; the face and extremities become cold ; the pulse small and irregular ; the resjiiration quick and short. The child utters continually a low piteous moan, or lies upon his back with the eyes fixed, glassy, and half closed. No pain or tenderness is indicated upon gentle pressure of the ab- domen ; the latter is, however, often greatly swollen and tyuipanitic. The child becomes more and more exhausted, and, finally, expires quietly, and without convulsions. This train of symptoms, with slight variations, marks that form of disease described by Camerer, Pommer, Hergt, Romberg, Droste and others, as gastro-malacia, and in which the stomach, and often the intestines likewise,' present a gelatinous softening of their parietes, to a greater or less exter t, but without the slightest indication of inflammation ; the soitenirg 3o2 7C2 CARCINOMA OF THE STOMACH. appearing to depend upon a diminished cohesion of the tissues — the result probably of dis* ordered or suspended nutrition. Acute gastritis as it occurs in the infant, is under all circumstances, and throughout all its stages, difficult to manage, and but little luider the control of remedies. At its very onset leeches to the epigastrium, followed by warm fomentations or soft emollient poultices, assi duonsly applied, will be found advantageous. Internally, minute doses of calomel vi'il often remain upon the stomach and allay the excessive irritability of that organ; we have occa- .■sionally combined the calomel with the acetate of lead; one-fotirth of a grain of the first ■with half a grain to a grain of theN second, will, in a large number of instances, very speedily control the vomiting and purging, and atibrd us time to reduce the local inflammation by leeches to the epigastrium, followed by blisters, kept on for one or two hours, and then re- placed by an emollient poultice. The thirst of the child should be allayed by small quanti ties of some bland mucilaginous fluid, given cold, and repeated at short intervals. Slightly astringent and bitter infusions are recommended by some practitioners during the period of convalescence, and we think that we have seen very decided benefit result at this period from the j^roto-carbonate of iron in moderate doses. — C] The stomach is very frequently the seat of specific inahgnant disease ; of cancer, in its various forms and denominations. The fatal nature of this complaint ; the obscurity in which it is sometimes wrapped ; the possibility of overlooking it alto- gether, or of confounding it with disease of a more innocent character, combine to invest it with peculiar interest. Carcinoma of the stomach has sometimes no symptoms at all, or none which the most sagacious practitioner would refer to the organ affected. Not long since I saw, in consultation, an elderly clergyman, m4io complained of pains in his back, which were brought on or aggravated by certain movements of the body. His bowels were costive ; and purgatives always relieved his pains. He was passing lithic acid gravel. The pains were felt in or near the renal region. Several years before he had suffered in a similar manner; and had then been cured by being cupped in the loins. What was the matter here ? Was it lumbago ? Was there a calculus in one of his kidneys ? These were the best guesses that I could make. The eminent phy- sician whom I met, and a surgeon of no less eminence, Avho had seen the patient previously, had not been able to obtain any more exact diagnosis. Upon this gen- tleman's death, which occurred not long afterwards, his disorder was discovered to have been cancer of the stomach. Excepting slight sickness a day or two before he died, there had been no symptom to direct attention to that part. A young woman came into the xMiddlesex Hospital, under one of my colleagues, with a pulsating tumour in her epigastrium. It was thought, at first, to be an aneu- rism, and the case attracted, on that account, a good deal of notice. But the tumour subsided very much after free purgation. This led some to suppose that it was formed by accumulated feces in the transverse colon. There was no sickness; nor indaed any one symptoin referable to the stomach. She died. The tumour was cancerous; and in the stomach. Lying in front of the abdominal aorta, it had been hfted by its pulsations. Cases to the same effect are related by Dr. Seymour in the Medico-Chirurgical Transactions ; and by M. Andral in his Cliniqiie Medicale. But even when the stomach is the organ pointed out, by the symptoms, as the probable seat of the malady, those symptoms fail, often, to indicate with any cer- tainty its nature. The effects of the carcinomatous disease exhibit no uniformity. The ingestion of food is apt to produce great distress ; but differently in different cases : sometimes as soon as the food is swallowed ; sometimes not for an hour or two afterwards. Some cases are attended with much pain ; some with none at all. One patient vomits continually: another has httle or no vomiting from first to last. Can the.?e differences be in any way accoimted for ? Partly they may. By ana- •yzmg case after case, we approximate to a knowledge of their causes. But this knowledge is yet far from being complete. One circumstance that has a considerable influence upon the symptoms, is the situation of the disease. In respect to this. point there are certain general rules which are for the most part true. Still we can speak of them only as applicable on the average; they are not absolute or infalhble. CARCINOMA OF THE STOMACH. 763 The rules I mean are these : 1st. That there is more suffering, caeteris paribus, when the cancerous disease is situated at, or very near, either extremity or orifice of the stomach, than when it occupies the intermediate parts ; whether in the greater or in the lesser curvature. 2d. That when the cardia, and its immediate neighbourhood, is the part solely or principally diseased, the food and drink find a hinderance in passing into the sto- mach ; but being once there, the distress is over. The symptoms are very like those of stricture of the oesophagus. The morsel reaches the bottom of that tube, and there causes uneasiness, till at length it is brought up again through the mouth, or passes gradually in the natural direction. 8d. That when, on the other hand, the disease is limited to the pyloric end of the stomach, the food enters that bag readily enough, and remains there for a certain time ; then uneasy sensations arise, and the imperfectly digested meal is apt to be rejected by vomiting. It is the difficulty of passing the doorway in these cases, that gives rise to the principal suffering; the difficulty of getting into, or the difficulty of getting out of the stomach. But when the disease is confined to the intermediate space, no such difficulty occurs ; and therefore little or no pain. You must expect, I say, to meet with individual variations from these rules. A remarkable example of such variation was presented by one of my hospital pa- tients, in the year 1837. I have the notes of that case before me, which I will read sJiort. Simon Ailes, aged thirty-six, admitted March 14. His main complaint was of pain in the epigastrium, always present, but augmented in frequent paroxysms, to an ex- treme degree of severity. At first, pressure gave him some relief. The pain was most violent an hour or two after he ate. He was troubled also with flatulence, and with sour eructations. Occasionally a clear tasteless fluid, looking like water, rose into his mouth. His bowels were costive. At this time his countenance was natural and placid ; but it gradually assumed that pinched and anxious expression, and that peculiar yellowish hue, which are so significant of organic visceral disease. He wasted fast. At length the epigastrium became tender as well as painful: but no tumour, except the left edge of the liver, could be felt there. He died on the 11th of May, about eight months from the commencement of the pain. A week before his death he vomited some dark, grumous, offensive fluid, evidently containing blood. With this exception he had CO vomiting. Many remedies were tried, which I do not specify, for none of them gave him any sensible or continued relief. In the smaller curvature of the stomach we found a ragged, sloughy surface, as big as the palm of one's hand, and extending to within half an inch from the pylorus. A section of this diseased portion exhibited the characters of true scirrhus: a white and hard mass, nearly half an inch across at its thickest part. The mucous mem- brane of the duodenum was congested, and dark-coloured. The I'est of the intestines VA'ere healthy except the rectum, which was surrounded, towards the anus, by scir- rhus and thickened areolar tissue, intermixed in laminas. The gut itself was not affected. The diseased stomach was removed, and examined by Mr. Kiernan, who found, upon careful dissection, that the trunk of the gastric branch of the par vagum run directly into, and was lost in, the scirrhous mass. This sufficiently accounted for the dreadful sufferings of the patient. And I am here reminded that, with regard to the structural akeration itself, there are some circumstances well worth attending to. Andral places all these organic affections of the stomach in the class of chronio gastritis. But it is clear that he is wrong : and you will perceive at once that it •'» of immense importance to recognize the specific disease from the mere result of common inflammation. But though cancer is not, in any case, a mere product of common inflammation neither is all that is called cancer really such. Specimens of morbid texture, nus* 764 CARCINOMA OF THE STOMACH. named scirrhus of the pylorus, are not uncommon in anatomical museums. I shciv you some from our own ; not so denominated, however. The correct labeling would be hypertrophy. You may perceive that the areolar and the muscular tissues near the p3-lorus, are very much thickened. A section of the thickened parts presents an appearance somewhat like horn ; and is crossed by whitish Hnes that run nearly parallel to each other. The morbid structure is quite definite and uniform ; and ver}" dissimilar, in that respect, to the irregular masses of scirrhus, and to the amor- phous deposits of encephaloid cancer. Neither does it at all resemble that of the colloid variety of carcinoma. Changes of this kind are liable to occur in the mus- cular tissue of this, as of other organs, whenever a permanent obstacle is opposed to the onward progress of the contents of the hollow viscus. The impediment may have been originally produced by inflammatory thickening of the textures composing the pylorus ; and then the hypertrophy may, in a certain sense, be accounted a con- sequence of inflammation. To that extent alone is M. Andral right. He has un- questionably pushed his theory on this subject too far. Whatever narrows the pyloric orifice leads to increased effort of the propelling muscle, and to augmenta- tion of its bulk and power. Now cancer itself, situated at, or close upon, the pylorus, may impede the exit of the digested aliment ; and then it causes a gradual hyper- trophy of the muscular coat. In these cases there is a mixture of the two changes ; of the cancerous growth, with the muscular hypertrophy : and this is one reason why they have been confounded together. Here are several preparations, exhibiting true cancer of the stomach. At the bottom of each bottle may be seen a sort of whitish powder, or sediment, consisting of some of the matters peculiar to cancer. This fact has been pointed out to me by Mr. Kiernan in the numerous specimens contained in his private collection. But there is no such deposit when the hyper- trophy is not combined with malignant disease. It has long been thought and asserted, that cancer of the stomach is not so apt to be attended, as cancer of other parts, with a disposition to present itself in various organs of the body at the same time, or in succession. Now I believe — and I am glad to add the weight of Mr. Kiernan's authority to my statement — that this is not really so. Cancer is a constitutional affection: or, if local and solitary in the outset, is prone to disseminate itself. The error has arisen out of that confounding of one morbid condition with another, against which I have been warning you. Instances are not at all uncommon of thickening of the areolar and mucous tissues about the pylorus, producing first a mechanical impediment to the passage of the food, then more energetic muscular efforts towards its expulsion from the stomach, and at last hypertrophy of the muscular tunic. In these cases, you do not find cancer in other organs : because, in fact, there is no cancer in the stomach. You may say that as both forms of disease are alike fatal, it signifies nothing whether there be really cancer or not. But it is always satisfactory to clear away an apparent anomaly, and to show that it has no real existence. Besides, you know with how much anxiety the relatives of the dead inquire concerning these matters. That cancer "runs in families" is well understood even by the public: and the dis- tinctions I have been pointing out are surely worth learning, if they do no more than enable us to comfort the minds of survivors, and to relieve them from the apprehen- sion that they also may be doomed or likely to become the victims of cancer. Notwithstanding what I have now been saying, it must be allowed that genuine cancer of the stomach is accompanied less frequently than some other modes of car- cinomatous disease, by cancer elsewhere. In fact cancer of the stomach is most often of the scirrhous variety, which until it softens is not so readily disseminated as the others, and which is apt to prove fatal before it softens. When primary cancer of the stomach is of the encephaloid kind, or when, being scirrhous, it begins to grow soft, — you would expect, after what was stated respecting suppurative phlebitis, that its secondary manifestation should occur chiefly in the liver. And it is so: the reason being that the veins of the stomach conuTiunicate with the general system not directly, but through the hepatic capillary system. But to return to the symptoms of carcinoma of the stomach. In some cases, I say, the food is rejected by vomiting : in some cases it is not. Now it has been argued CARCINOMA OF THE STOMACH. 765 that this difference depends upon the condition of the pyloric outlet ; whether it be free and open, or contracted and shut. The explanation is more plausible than sound. It is not strictly consistent with facts. Vomiting of the food has been an ur gent symptom, when there was no mechanical bar to its passage into the duodenum, The pylorus is a sphincter muscle, of which the natural and habitual state is that of contraction. It yields, however, in health, to the pressure of the digested aliment, whicn is driven forwards by the muscular fibres that surround, and compress by their action, the pyloric end of the stomach. If there be a mechanical impediment, that affords a sufficient reason why the food should be thrown up again. But sometimes, I repeat, the orifice is wide open, and yet the food is rejected : and it is rejected be- cause the disease so involves the pyloric end of the stomach, that the propelling force cannot be exercised. When there is a mechanical obstacle, the disposition to hypertrophy of the mus- cular coat is conservative. But in feeble and delicate persons, the baffled muscles may never acquire strength enough to overcome the impediment ; and then the very opposite condition is apt to take place : the coats all become very thin ; meal after meal is retained ; the stomach is enormously distended, and relieves itself now and then, at distant intervals, by copious vomiting ; until at last it is unequal to that efTort, and the patient dies. Sometimes the sickness and vomiting are urgent even when the stomach contains no food : and the matters rejected are of various character and appearance. They often resemble coffee-grounds, and consist, no doubt, of altered blood. Vomiting of this kind is a vexy pregnant sign of organic mischief in the stomach. Emaciation is another ugly circumstance in these cases ; and forms a strong grouno* of presumption that the symptoms depend upon structural disease. Yet it is not a uniform consequence, even of malignant disorganization of the stomach. Napoleon Bonaparte was very fat when he died. His omentum is described as having been "remarkably fat;" and the "fat was upwards of an inch thick upon his sternum, and one inch and a half upon his abdomen." The existence of a palpable tumour strengthens the unfavourable diagnosis. But this is far from being a constant phenomenon. It is not even pathognomonic when it does occur. The diseased head of the pancreas has been mistaken for a thickened pylorus. The stomach is liable also to be dragged much out of its place ; and then a thickened pylorus may be mistaken for something else. Sometimes the form of the stomach may be distinctly traced. In the person of a medical practitioner who died lately in this neighbourhood, the shape of the organ, its occasional peristaltic motions, and the irregular and hardened pylorus, were plainly to be felt. They might indeed almost be seen, in the hollow and attenuated abdomen. When a tumour is ascertained to belong to the stomach, it indicates disease of the pylorus rather than of the cardia. It is a curious feature in these malignant diseases of the stomach, that the symp- toms sometimes remit, in a remarkable manner, so as to excite a hope in the mind of the patient, and in that of his medical attendant, that the nature of the malady had been mistaken, and that recovery is about to take place. But the truce is not for long. Frightful disorganization is at length produced, ragged ulceration, perfora tion of the coats of the stomach, adhesion to the parts adjacent, which thus are con stituted adventitious walls ; — and inevitable death at last. The treatment of this dreadful complaint can only be palliative. If there be pain, we are driven, sooner or later, to opium. Anodyne enemata have often as good an effect in relieving the pain as opium given by the mouth ; and they have this advan- tage, that their constipating properties are more easily obviated than when that drug is put into the stomach. Nutritive injections are proper when food taken through the natural channel is not retained. Other palliative measures may be aimed at particular symptoms ; of these I pro- pose to speak when I come tc the symptoms and remedies of dyspepsia. 766 H^MATEMESIS. LECTURE LXIX. Hemorrhage from the Stomach: sometimes from a large vessel, usually by exha lation. Idiopathic Hxmatemesis. Vicarious Hxrnatemesis : Hsematemesis from Gastric disease or injury: from disease in other organs. Melxna. Ila^matemesis from a morbid state of the blood. General phenomena of Haema- temesis. Diagnosis. Treatment. Hemorrhage from the stomach, to which I wish next to direct your attention, is of much more frequent occurrence than acute gastritis. It is a complaint, or a symp- tom, that presents several points of interest and importance. I use the phrase "hemorrhage from the stomach," rather than the single term " hasmatemesis," be- cause that term, signifying strictly a vomiting of blood, does not necessarily imply hemorrhage y)'om the stomach; nor, indeed, does it always accompany such hemor- rhage, although it is one of its most common and most striking symptoms. What I have so frequently mentioned in respect to hemorrhages from me mucous membranes generallj', viz., that the efllux of the blood is seldom jwing to tne rupture of a large blood-vessel, holds true in this. It can rarely happen tnat any vein or artery belonging to the stomach is divided or laid open by accidental injury, so as to pour forth its blood. When hemorrhage does proceed from one or more of the larger blood-vessels, the opening by which the blood escapes is commonly the result of chronic ulceration ; such as I spoke of yesterday. 1 have not, myself, met with an instance of that kind. Andral states, that, ai most, there are but five or six such eases to be found in the records of medicine. Since his work on Pathological Anatomy was published, another example of the same lesion has been detailed in the Journal Hebdomadairz for May, 1S30. I show you a drawing after Dr. Cars- well, representing an ulcer which Idid open the coronary artery of the stomach, ana caused fatal hemorrhage. In these cases, we have, first, the symptoms of chronic gastritis ; next, faintness, or actual syncope, from the sudden abstraction of a large quantity of the vual fiuid ; and lastly, the visible eruption of the blood itself; foi vomiting seldom occurs until a large quantity of blood has accumulated in the sto- mach. As this variety of gastric hemorrhage is rare, I will briefly relate an instance of it, which occurred in the year 1831, at St. Bartholomew's Hospital. Dr. Latham, who had charge of the case, was good enough, some time ago, to give me the following history of it. The subject of the disorder was a man thirty-eight years old. He was admitted on tne 19th Januarj'. His countenance was dusky, but exsanguine ; his pulse 100, and weak ; his tongue pale, and shghtly furred. He made no complaint of pain anywhere. He had been ailing for two years ; had suffered much pain across the epigastric region ; and had frequently vomited his meals. Two days before, he had been suddenly attacked with faintness and giddiness, and then vomited about two quarts 0^ blood. He was an habitual spirit drinker. In the afternoon of the day on which he entered the hospital, he was again seized with giddiness ; and fell into a state of syncope, in which he remained for several minutes. Upon recovering, he vomited a large quantity of blood, not less than three pints. The next morning, early, he brought up a like quantity, under similar circumstances ; and he passed three evacuations from the bowels, all of them black. He w'as gradually sinking during the whole of that day, the 20th. Towards the evening, he vomited about half a pint more blood. He died quietly the next morning. When the abdomen was laid open, the stomach was seen to be distended. The intestines had. in several places, a black appearance, from the colour of their con tents. The siomach contained about two pints of coagula, and of a dirty red liquid. At the upper part of its lesser arch was a small excavated ulcer, with hardened HiEMATEMESIS. 767 edges. In the centre of this ulcer there were visible the orifices of three or four arteries, filled with minute clots of blood. Tt would seem as if gastric hemorrhage, having this origin, were capable of being stanched by some natural process ; and as if the injury done to the stomach were susceptible of repair. Andral describes a curious case, in which an open blood- vessel was found in an ulcer of the stomach ; but no hemorrhage had occurred. That mere ulcers in the stomach may heal, there can be no doubt : two or three scars of healed ulcers are represented in Dr. Carswell's drawing. The patient whose case is related in the Journal Hebdomadaire had vomited considerable quantities of blood for eight days in succession, five years previously to the attack which terminated his life. So that hsematemesis from this cause is not absolutely hopeless. But (as I have already said) hemorrhage from the mucous membrane of the sto- mach, and from that of the alimentary canal generally, takes place far more com- monly by exhalation. The evidence that the blood really does ooze from the membrane is the same as that to which I have so often had occasion to advert ; and it is very satisfactory and conclusive in these cases, because we are able to scrutinize closely the whole extent of the mucous surface. This cannot so well be done in regard to the mucous membrane of the lungs. When death has followed imme- diately upon the hemorrhage, and has indeed been its rapid effect, the membrane has been found quite entire, and of its natural consistence and texture throughout. Sometimes partially red and pulpy, and vascular; sometimes universally so, the submucous capillary net-work of vessels being still gorged with blood ; sometimes quite pale, the same system of vessels having been completely emptied by the last attack of hemorrhage ; and sometimes studded with minute dark points, which could be made, by slight pressure, to start from the surface, and looked like grains of black sand. This latter appearance, as I once before remarked, is very corroborative of the opinion that the blood escapes through the natural pores or channels : which it cannot enter so long as the solids and fluids of the body retain their healthy con- dition. These sand-like bodies are, doubtless, small portions of blooa, which have coagulated in the exhalant orifices of the membrane, and received from them their shape. This kind of hemorrhage happens under various circumstances ; and is attended with different degrees of danger. 1. The bleeding may be idiopathic. 2. It may bo vicarious of some other habitual hemorrhage. 3. It may depend upon disease or injury of the stomach itself. 4. It may be the consequence of disease situated elsewhere, and producing, mechanically, a plethora of the veins of the stomach. 5. It may result from a morbid condition of the blood, and form one sjariptom of a more general disease ; as in the passive hemorrhages of purpura and sea-scurvy. Each of these varieties requires a short notice. 1. Hemorrhage strictly idiopathic — i. e., independent of any apparent change of texture, whether in the surface itself, or in any part obviously capable of influ- encing its blood-vessels — is as rare, I believe, from the mucous membrane of the stomach, as from that of the lungs. I have never seen, nor do I recollect to have read of, any instance of hsematemesis analogous to the epistaxis which is so common in children and young persons ; and which affords the most familiar example of idio- pathic hemorrhage. 2. But hemorrhage from the stomach, occurring in connection with other consti- tutional hemorrhages, or in their stead — and above all, occuring vicarioiislt/ of men- struation — is abundantly common. It is the most common, indeed, of all the species of hemorrhage by deviation. I told you, in a former lecture, that patients will sometimes menstruate for years together through the lungs ; without any apjxirent injury to their general health. More commonly still do they menstruate through the stomach. I will mention one concise but singular example of this which I had from Dr. Latham, and which came within his own knowledge. A young woman became the subject of haematemesis, recurring at monthly periods, about the age of fourteen. She had never menstruated. This continued until she married, and in due time, fell with child. Thereupon the hsematemesis ceased. She brought forth 768 HiEMATEMESIS. and suckled her infant. During lactation tlie hennorrhage did not recur. It came on again soon after she ceased to nurse the child ; no regular menstruation by the uterus having ever happened. This was the woman's own account, and there ap- peared no reason to question its accurac3\ Gastric hemorrhage of this kind, vicarious of regular menstruation, is not generally thought to have any tendency to shorten the existence of those who are afflicted with it. Cujlen states broadly that this species of hsmatemesis is hardly ever a dangerous disorder: and this is true. Yet it is not so entirely free from peril as to preclude the necessity of some caution and qualification in stating the prognosis. The ex- haustion from the mere loss of blood is sometimes so great as to create serious alarm for the patient's safety. And Mr. North has recorded (in the London Medical and Physical Journal) two instances in which suppressed menstruation was followed by repeated and at length fatal hsematemesis. In neither of these women was the health seriously deranged ; nor, previously to the hemorrhage, did there exist debility, or any other symptom calculated to excite the apprehension of danger. In fact, in both of these cases, a strongly favourable prognosis was given by experienced physicians, a very short time only before the fatal event. 3. Gastric hemorrhage, by the w^ay of exhalation, is often a consequence of dis- ease or injury of the stomach itself. It is sometimes one of the earliest declaratory symptoms of scirrhus or cancer of that organ — occurring long prior to ulceration. Hsematemesis attends, also, very commonly, the ultimate stages of that fatal disease : and then it may be owing to the erosion of some vessel of notable magnitude, in the course of the process of disorganization, as in the examples already spoken of: or (what I believe is far more common) it may result from a kind of general oozing or exhalation from the ulcerating surface. Blood is often vomited soon after the recep- tion of strongly irritant poisons into the stomach. I show you again Dr. Roupel's plate, representing the crimson surface of a portion of the stomach of a dog which had been killed shortly after the administration of a dose of alcohol. The intense congestion thus produced is doubtless active congestion ; congestion belonging to inordinate arterial action. Pushed a degree further, such congestion passes into hemorrhage. 4. On the other hand, intense passive congestion — congestion arising from the detention of blood in the veins by some mechanical obstacle to its progress — is a very common source of gastric hemorrhage. Hfematemesis is therefore an occasional symptom of obstructive disease of the heart. Much more frequently, however, it depends upon abdominal changes. The hemorrhage is symptomatic of disease situated not in the stomach itself, but elsew'here. And the viscera, with the diseases or morbid conditions of which, bleeding from the stomach is most often connected, are the liver and the spleen. All this is well known : and it is easy to see, from the peculiar construction of thff venous apparatus in the abdomen, how disease of one or both of these viscera may produce mechanical congestion of the submucous capillary tissue; and how chai congestion may be relieved, under certain circumstances, by the effusion of seious fluid on the one or the other surface, constituting ascites or diarrhoea, as the case may be ; or under other circumstances, not perhaps easily discriminated or well understood, by the extravasation of the collected blood itself. It would be saper- fluous to describe the peculiar distribution and functions of the vessels which leturn the main portion of the venous blood from the stomach and intestines towards thd 'heart. It seems to m''. highly probable that one at least of the offices of the spleen is to provide a receptacle or reservoir for this blood when its free passage through the portal vessels is temporarily obstructed. It then becomes a sort of safety-valve (if such an illustration be allowable), which obviates the danger that might otherwise arise to more vital parts from any great or sudden disturbance of the venous circu- lation. The stress of the congestion is continually feh in the submucous capillary system ; and the hemorrhage, which is apt in such cases to occur from the loaded membrane, receives a simple solution upon principles almost purely mechanical. Nay, the very circumstances which lead to the effiision of the blood from the mucous eurface on the one side, rather than from the serous on the other, may perhaps (as I HiEMATEMESIS. 760 Stated more at large in an early part of the course) be themselves susceptible or mechanical explanation. Gastric hemorrhage, symptomatic of hepatic disease, is chiefly to be looked for in those morbid conditions of the liver which imply obstruction of the portal vein and of its ramifications. We are not surprised, therefore, to find it coincident, often, with a contracted and shrunken state of that organ. The state of the spleen, on the contrary, for reasons that must be obvious to you, is uniformly, in the cases we are now considering, a state of enlargement. And the augmentation of bulk is not so much to be ascribed to disease inherent in its proper texture, as to distension by the mere quantity of blood which it holds. The internal structure of the spleen furnishes a credible presumption in favour of that view of one of its uses to which I just now alluded ; and this structure, and this presumed function, when considered together, throw a strong light upon some of the pathological relations of the spleen which well deserve attention. Numerous instances are on record of hsematemesis going along with evident enlargement of the spleen ; and in some of them that organ has been observed to diminish in bulk, in proportion as blood was poured out by the stomach. If I am not greatly mistaken, I have more than once seen this myself. In such lases the tumid condition of the spleen may be regarded as an evidence of venous obstruction elsewhere; and, as depending, sometimes at least, upon disease of a less striking and prominent character in the liver, impeding the progress of the blood through the vena portaa. Of this kind would seem to have been a case related by Morgagni, wherein, after repeated attacks of haematemesis, under which the patient sank at last, the spleen was found to weigh four pounds, and to be gorged with dark blood ; while the liver was pale and exsanguine. Frank gives the history of a patient, who had vomitings of blood, and whose spleen, taken from the body after death, weighed sixteen pounds: the ordinary weight of the spleen in a healthy adult being from eight to ten ounces. In Latour's work on Hemorrhage, which is remarkable for the number of examples it contains, collected from various sources, and amounting to nearly a thousand, several instances are detailed of this combination of splenic en- largement with hasmatemesis. One of these occurred in the person of a friend of his, who had been living in a malarious district, and who had laboured for nearly iwo years under obstinate intermittent fever. This was followed by an immense enlargement of the spleen — a great ague-cake — which came to occupy almost tht whole of the abdomen. Latour's experience enabled him to predict that hasmate- mesis would probably supervene upon this condition of the spleen ; and, accord- ingly, one night he was called in a hurry to his friend, and found that he had vomited an enormous quantity of clotted blood. A great deal passed away through the bowels also. The hemorrhage recurred from time to time, till in the course of a month the spleen was so far reduced in bulk, that it could no longer be felt in the belly ; and the patient lived and enjoyed good health, for twenty-five yeara afterwards. It is necessary, therefore, in marking the connection which frequently subsists between hsematemesis and enlargement of the spleen, to guard ourselves against con- cluding that these two circumstances hold always the relation of cause and effect. In many such cases, probably in most of them, they are simply concurrent effects of one common cause ; and that cause is chiefly to be sought in such morbid conditions of the liver — or of other parts within the abdomen — as are competent to produce a considerable impediment to the free transmission of blood through the system of tha vena portse. When gastric hemorrhage results from hepatic obstruction, there is almost always intestinal hemorrhage also. At any rate there are almost always black alvme evacuations, like tar or dark paint. This form of disease has there^'ore been called mdxna. The ancients supposed that the unnatural stools consisted of black bile. Hemorrhage from the stomach, independent of disease in that or any other part, sometimes happens in the advanced periods of utero-gestation. Yet, though it does not result in these cases from disease, it is difficult to class it among idiopatUl 49 3p 770 HiEMATEMESIS. hemorrhages. The want of periodical recurrence, and the absence of the hemor- rhage during the earlier months of pregnancy, are circumstances which sufficiently refute the old notion, that this form of hoematemesis depends also upon the suspen- sion of the catamenia. It is caused, no doubt, b}^ the pressure of the gravid uterus, which impedes mechanically the venous circulation in the abdomen. 5. Gastric hemorrhage, resulting from changes in the blood itself, occurs in sea- scurvy, in purpura hemorrhagica, and in the yellow fever. Being merely a symp- tom in these cases, it requires no separate consideration here. When a large quantity of blood is poured into the stomach, whatever may have been its source, it appears to have a nauseating and emetic effect. At least the blood ejected in hcematemesis is almost always considerable in amount. The vomiting may, for aught I know, be dependent on the m.ere distension of the stomach, which appears to be tolerant of the presence of the blood up to a certain point, but no further. A small quantity may, doubtless, pass all of it onwards through the pylorus, after undergoing, more or less completely, the process of digestion in the stomach; and a portion of the blood pursues that course in most instances. But when it is vomited, it comes up in large quantities, usually of a dark colour, and more or less coagulated. Sometimes the coagula have evidentl}'' been moulded in the stomach ; and sometimes clots are thrown up, partially deprived of the colouring matter of the blood, and re- sembling the fibrinous polypi so often met with in the cavities of the heart. Of course the degree of coagulation of the blood, and of its separation into serum and crassa- mentum, will depend upon the time that it remains in the stomach ; and this again would seem to bear a proportion to the rate of its effusion. The blood that is vomited is almost always of a dark colour ; while that Avhich is coughed up is most frequently florid and bright. Why is this ? We are told that the blood which comes from the lungs is rendered florid by the admixture of atmo- spheric air. But this is not the Avhole of the matter. Neither can we saj'' that the dark hue of the blood ejected in hoematemesis is always, or solely due to some morbid alteration effected in that fluid while yet circulating in its proper vessels. There is another cause, which till of late years, was much overlooked, but which frequently changes the colour and appearance of the blood after it has been extravasated into the stomach ; and that in so great a degree as sometimes to render doubtful, or to disguise altogether, the real nature of the fluid vomited. I mean the chemical agency of the gastric acid. The effect of acids in blackening the blood out of the body is well known ; and it is somewhat singular that the ascertained existence of an acid secre- tion in the stom.ach, varying in quantity at different times and under different circum- stances, was not sooner apphed in explanation of the dark colour of the blood, and its occasional blackness, when vomited. The degree of blackness will be in propor- tion to the relative quantity of acid which it meets with in the stomach, and the inti- macy of the admixture. Sometimes the blood is clotted and not very much altered in colour; sometimes it is grumous, brown, of a chocolate tint, or like coffee-grounds. This generally denotes the existence of organic disease; and the appearance of the blood is probably modified in some degree by the morbid process that leads to its effusion. There is good reason for believing that in the black vomit of the yellow fever, the colour of the blood undergoes alteration, even while it is yet circulating through the blood-vessels : but that the black appearance of the matter vomited is in great part owing to the chemical action of the gastric acid, may be inferred from the fact, that the fluid so discharged is always (so I am informed) intensely acid. Andral has described an eff^usion of black liquid into the stomach, as an example of mela- nosis. He states at the same time that an accurate analysis of the liquid showed its composition to be very nearly the same with that of the blood. May we not sus- pect that this inky fluid really consisted of blood that had been blackened, subse- quently to its extravasation, by the acid with which it mixed in the stomach ? Upon the same principle may be explained the dark brown or almost black colour of the spots which are sometimes seen (I presume when there has been a great predomi- nance of acid) in the substance of the mucous membrane of the stomach, or even Deneath it ; and which have also been set down as melanotic. They are so like, in DIAGNOSIS OF GASTRIC HEMORRHAGE. 771 all circumstances, except in the single particular of colour, to the crimson spots which are obviously formed by minute extravasations of blood in the same parts, that we can scarcely refer them to any other source. The slate-coloured patches, which I spoke of yesterday as being vestiges of chronic gastritis, depend likewise upon the blackening effect of the gastric acid upon the congested surface. We have the same dark colour of the effused blood, in many cases, when it is poured out in the intes- tines. Here, of course, its colour is not referable to the gastric juice ; but it is black- ened by some of the intestinal gases : probably b}'' the sulphuretted hydrogen, for example, or the carbonic acid that enters into their composition. There can be no doubt that this gastric acid, when intense in strength, or copious in quantity, is capable of changing the colour of the blood, after death, even while it is contained in the sub-mucous blood-vessels. In these cases it must be conveyed to the blood by imbibition. And the very same thing takes place when strong acids are introduced into the stomach from without. When, for instance, the sulphuric acid, or what is perhaps more to our present purpose, the vegetable oxalic acid, has been taken as a poison, it has the effect of blackening, and, as it were, charring the blood, with which the membrane becomes loaded in consequence of the irritation produced by the poison. It does this when no destruction of the mucous membrane has been produced. It is but justice to observe, that the credit of having been the first to perceive, and to explain, this cause of the blackened state of the blood, while yet remaining in its proper vessels, is due to Dr. Carswell. When the blood is injected through the oesophagus and mouth, we have demon- strative evidence of the existence of hemorrhage ; and the diagnosis of hsematemesis may appear to be so simple as to admit of neither mistake nor doubt. The diagno- sis of hemorrhage from the stomach, however, is really oftentimes difficult and ob- scure, and to be established by presumptive evidence alone. In the first place, bleeding may take place from the mucous membrane of the stomach, and no hcematemesis ensue, especially when the blood is poured forth in small quantities and slowly. In these cases the blood becomes visible only in the stools, where it may not be looked for, and where, if seen, it may not always be recognized, in consequence of the changes it has undergone during its passage through the intestinal canal. And even supposing that its presence is detected in the alvine evacuations, it will remain uncertain in what part of that long canal it was effused. The hemorrhage may even be profuse, and the patient may die, with- out any escape of the blood externally. There is a case related by Frank, in which death took place from hemorrhage of the stomach without hsematemesis; and both the stomach and the intestines were found distended by an enormous coagulum of blood which had assumed their form. Even when the blood is ejected by the mouth, the exercise of some care and sagacity is occasionally, though not always required, in order to determine the part from which it was originally poured out. Thus blood may be swallowed, and afterwards vomited : and so we may have hsematemesis without hemorrhage from the stomach ; just as we may have hemor- rhage from the stomach without hsematemesis. There are cases of slow bleeding from the lungs, the fauces, the mouth, or the nasal cavities, where the blood, col- lecting in the pharynx, provokes, from time to time, an instinctive and involuntary act of deglutition; and thus is gradually accumulated in the stomach up to that point at which the organ becomes impatient of its contents, and ejects them by vo- miting. This is very apt to happen during sleep, and especially to young children : and as the blood, ivhen vomited, is coagulated, and in considerable quantity, it is scarcely possible to conclude, from its mere appearance, that it has proceeded frono any other source than the stomach itself. If, however, we mistake such cases, our error is likely to produce much needless alarm, and to lead us to unnecessary acti vity in treating them. We are assisted towards forming a right judgment (when our attention happens to be directed to this source of fallacy), partly by the general history and symptoms, and partly by an examination of the mouth, fauces and nos- 772 DIAGNOSIS OF GASTRIC HEMORRHAGE. trils, to ascertain whether any coagula, or other marks of hemorrhage, are visible on the mucous membrane belonging to those parts. But blood may be swallowed knowingly and purposely by impostors, and after- waids vomited. Hsematemesis is one of the complaints which have frequently been feigned ; either for the sake of avoiding some imminent punishment, or distasteful service ; or with the view of exciting compassion, and of profiting by the contribu' lions of the charitable and the credulous ; or sometimes from a kind of wilful per- versity, akin to insanity. In treatises on forensic medicine, you will generally find reference made to an instance of this kind recorded by Sauvages, in his Nosology. A young girl, who was anxious at all hazards to escape the constraints of a convent, pretended that she was suffering from violent heematemesis. In fact she did, for several days in succession, vomit large quantities of blood in the presence of the physician who had been summoned to her assistance. It Avas afterwards discovered that on each of those days she had swallowed blood which had been secretly con- veyed to her from the neighbouring shambles. A case of precisely the same kind occurred (as I was informed by a gentleman who witnessed it) in the Bristol Infirm- ary some years ago. A girl had long been a patient there, labouring (as was sup- posed) under hsematemesis ; but it was at length discovered that she was a mahn- gerer. She was in the habit of assisting the nurses in their work ; and this afforded her opportunities — of which she availed herself — of drinking the blood which had been drawn from the veins of other patients: and this blood she afterwards vomited. And even where no fraud is attempted, nor any blood swallowed, it occasionally becomes a nice matter to determine the origin of the hemorrhage, when blood is ejected in large quantities from the mouth: to decide, namely, whether the blood has come originally from the lungs or from the stomach. In copious hsemoptysis, the blood issues from the mouth in gushes as it does in hcematemesis ; and the reflux of the blood into the phar}-nx, the tickling sensation it there produces, and the cough (which we know, even when the expectoration is not of blood, frequently excites retchings); these causes, acting singly, or together, occasion sometimes a convulsive contraction of the muscles of the thorax, which looks like the effort of vomiting : and they often indeed give rise to actual vomiting. On the other hand, in sudden and profuse hsematemesis, the irritation caused by the blood as it passes over the upper part of the larynx, is apt to provoke a paroxysm of choking cough. Now when I was speaking, some lectures back, of hcemoptysis, I promised that I would point out the means of distinguishing it from hasmatemesis, when I came to the consideration of the latter complaint. I have now therefore to redeem my promise. However equivocal certain cases may be at first sight, we may generally guide ourselves to a correct decision by a careful investigation of the circumstances that precede, accompany, and folloiv the hemorrhage. Vomiting of blood is commonly preceded by a sensation of weight and uneasiness in the epigastrium ; and by nausea. Ilsematemesis is also, more frequently than htemoptysis, ushered in by paleness of the face, dimness of vision, and an approach to syncope, or even actual fainting. These symptoms are not to be regarded (I apprehend) as premonitory of the hemor- rhage, although they have been so considered by some ; they are rather a sign that it has already taken place ; and yet they are preliminary of the hsematemesis. Occurring before the blood comes up, they cannot be ascribed to alarm at the sight of it. On the other hand, haemoptysis is wont to be announced by dyspnoea, cough, tickling in the throat, and a sensation as if of bubbling within the thorax. Most commonly, too, before the expulsion of much blood from the lungs, some sputa are coughed up, composed more or less of that fluid. The symptoms that usually suc- ceed the hemorrhage, in either case, afford equallv valuable assistance to our judg- ment, in cases that might otherwise be doubtful. Generally copious hsemoptysis goes on, in a succession of mouthfuls, for some time : whereas there is, mostly, only one access of full vomiting. At any rate, at the close of abundant pulmonary he- morrhage, the patient manifestly coughs up, and expectorates, smaller quantities of blood , while we usually may observe that, a few hours after hsematemesis has DIAGNOSIS OF GASTRIC HEMORRHAGE. 773 occurred, slight griping pains come on in the abdomen, and a portion of blood is got rid of from the bowels. Other questions, often of much importance in regard to the ultimate diagnosis, when the blood is traceable with certainty to the stomach, are, whether it be idio- pathic, if, indeed, it ever be so : whether it be supplemental of some other discharge : whether it depend on disease of the stomach itself; of one, or more, of the contigu- ous viscera ; or of the system at large. Certainly, in a very great majority of ca.es, gastric hemorrhage is symptomatic; and the nature and seat of the disease of which the bleeding is a symptom, may, in many instances, be determined without much difficulty. That which depends upon incipient cancer of the stomach, while it is by no means of rare occurrence, is also, (I think,) more frequently than other forms of hemorrhage from that organ, obscure. It must be obvious to you, and therefore I need not dwell upon this part of the subject, that a httle attention to the symptoms and past history of the patient will usually suffice to elucidate the nature of the case, where hsematemesis supervenes immediately upon the introduction of corrosive poi- sons, or within a certain interval after they have been swallowed : where it depends upon the bursting of a large aneurism : where it breaks forth among other symp- toms of scurvy or purpura : where it is the result of an advanced stage of cancer of the stomach : where it accompanies organic disease of the liver, spleen, or heart : where it occurs as a symptom of yellow fever : where it takes the place of suppressed or imperfect menstruation ; or where it is occasioned by the pressure of the gravid uterus. In all these cases, there is, ordinarily, no room for mistaking the one dis- ease for the other; or for regarding the hemorrhage as idiopathic. With respect to the treatment that should be adopted in cases of hemorrhage from the stomach, it must be apparent, from what has just been said of the many different morbid conditions u]5on which it may depend, or with which it may be essentially connected, that remedies are, in most cases, rather to be directed against the disease of which the ha^matemesis is a symptom, than against that symptom itself. But sometimes we are obliged to treat the symptom, either because we are not certain of the exact nature of its cause, or because the condition out of which it springs is not within our reach. Cases 0^ melxna (I have told you what is meant by that term) require hard purg- ing ; and many patients recover thoroughly under that mode of treatment. You may prescribe five grains of calomel every night, and a black dose every morning, till the stools lose their pitchy colour. Do not be afraid of purging your patients in such cases. If they are curable at all, that is the way to cure them. I have pur- sued that plan with perfect success, even with patients whom the previous hemor- rhages had blanched, and whose pulse was feeble and irregular. You may sustain them, at the same time, by a full allowance of nourishing broths. The portal system is drained and unburdened by this active depletion. And if there be no irremediable change of texture in the liver, the recurrence of the hemorrhage may often, by a proper regulation of the habits and diet, be obviated. The ancients had learned by observation the efficacy of treatment of this kind ; but they used a different form of medicine, and purged away the atra bilis with hellebore. It is plain that for melcena, dependent on mechanical congestion, styptic substances would be worse than useless. They are more adapted to those cases (could w^e but surely distinguish them) in which the hemorrhage proceeds from a bleeding vessel. This is indeed the mode whereby w^e often succeed in stanching external hemor- rhages ; namely, by applying astringents to the very part. Similar means may bv^ employed when ha^matemesis, of a purely passive character, depends upon some modification of the circulating blood. There is one remedy which is thought to have a sort of specific eflt^ct upon hemorrhages of the gastro-intestinal canal • I mean the oil of turpentine, given in small doses; from twenty minims to half a drachm, every four or six hours. I cannot say that I have had much experience of it. Of course the patient must be kept cool and quiet; whatever he drinks, he should drink cold ; even ice is often both grateful and effectual. If ordinary measures fail, recourse may be had to the acetate of lead ; or even to the quack medicine, Ruspini's styptic Not that I think you will often find the latter expedient successful, when mor« 3p2 774 DYSPEPSIA. rational treatment has failed ; but in obstinate and dangerous cases it ought to be tried. If, with the hasmatemesis, there be any fever, it may be proper and necessary to abstract blood from a vein, and to employ refrigerant substances as remedies ; and if, with or without much fever, there be tenderness at the epigastrium, leeches, or a bhster, should be applied. In cases where the catamenia desert their natural chan- nel, and seek an outlet through the mucous membrane of the stomach, it will be well, while means are taken to discourage the hcematemesis, as iced drintt and so forth, to endeavour to solicit the discharge in the right direction. And we often sue ceed in this object by placing leeches upon the groins of these patients immediate^ before the period when the vicarious menstruation is expected, and by putting theii feet at the same time into hot water, or even laying them in a warm hip bath. LECTURE LXX. Dyspepsia. Physiology of Digestion. Symptoms of Dyspepsia. Treatment and Prevention, Dietetic and Medicinal. It is my intention to appropriate this evening's lecture to a cursory account of dyspepsia; by which I mean some evident derangement in the natural process of digesting and assimilating our food, and, more especially, a faulty performance of the functions of the stomach. Indigestion is the prevailing malady of civilized hfe. We are more often consulted about the disorders that belong to eating and drinking, than perhaps about any others ; and I know of no medical topic concerning which there is afloat, both within and beyond the profession, so much ignorant dogmatism and quackery. Cullen, in his definition of dyspepsia, enumerates the various symptoms, by the occurrence of more or fewer of which that complaint is most commonly manifested : "Anorexia, nausea, vomitus, inflatio, ructus, ruminatio, cardialgia, gastrodynia : pau- ciora saltem vel phira horum simul concurrentia, plerumque cum alvo adstricta, et sine alio vel ventricuh ipsius, vel aliarum partium, morbo." The variety in the actual presence and combinations of these symptoms is very great ; and any attempt to give a perfect or complete history of dyspepsia in these lectures is quite out of the question. But I will endeavour to draw such a general outline of the disorder as may assist and direct your observation of it hereafter. I shall first take a brief view of the pathology of indigestion, so far as it is under- stood ; and to make this intelligible, it will be necessary to interweave something of the physiology of the subject. To these preliminary considerations, I shall ad»^ a short comment upon the several symptoms of dyspepsia, enumerated in Cullen's definition ; and, lastly, I shall state what I know respecting the means of curing and preventing this familiar disorder. The conditions of healthy digestion are these : that the food should be masticated, mixed with saliva, and swallowed into the stomach ; that in the stomach it should be reduced to a semi-fluid consistence, and converted into a uniform pulp, called chyme ; that the chyme should be transmitted through the pylorus into the duodenum, and there mixed with the bile, the pancreatic secretion, and the intestinal mucus : in consequence, as it would seem, of which admixture, the whole is separated into two parts, viz. : the chyle, or the nutritive portion of the food, now in a fit state to be taken up by the lacteals which open upon the mucous surface of the intestines, and to be carried by them into the blood ; and the excrementitious portion, which at length is conveyed out of the body. The food js dissolved and transformed, in the stomach, by the chemical agency of the gastric juice. This is a secretion peculiar to the stomach. All that need be stated of it h'^re — almosi all, indeed, that is known — is, first, that it oozes forth in minute drop* from the mucous surface ; but only when food (or some solid sub* DYSPEPSIA. 775 stance) is present in the stomach; and, secondly, that it is always aclJ. It appears to owe its solvent power to a special principle, which chemists have named pepsin. The food, having arrived in the stomach, is moved about by a sort of churning or revolving movement, and mixed with the gastric juice, and gradually changed into chyme, which also is acid. Finally, the chyme is propelled by degrees into the duodenum by the pressure of the transverse band of muscular fibres which embraces the pyloric extremity of the stomach. The time in which the whole operation is completed varies from two to four or five hours. Liquids introduced into the stomach disappear much more speedily ; either by direct absorption, or through the pylorus. All this we know, not from mere speculation on the anatomy and uses of the organ, but from actual observation. An American physician had, for several months in succession, the curious privilege of looking, whenever he pleased, into a healthy human stomach, and of watching its condition, its movements, and its contents, during the process of digestion. A young Canadian had a portion of the skin, muscles and ribs of the left side of the body blown away in a gunshot wound, which laid open the stomach also. He recovered from this frightful injury with a permanent aperture in the side, communicating directly wiih the stomach. Through this loop- hole Dr. Beaumont was allowed to introduce various articles of food ; and to with- draw from time to time the gastric secretions ; and the aliment, in the different stages of its digestion. He has published a very interesting account of these experiments, which have set at rest some points in the physiology of the stomach that were pre- viously uncertain. I shall embody his deductions in what I have further to say on the subject. In order that digestion may be perfect and easy, it is requisite that the food be irj a state of minute division. This object is attained by mastication. A weak dys- peptic stomach acts slowly, or not.at all, on solid lumps and tough masses of food. The delayed morsels undergo spontaneous changes, promoted by the mere warmth and moisture of the stomach : gases are extricated : acids are formed : perhaps the half-digested mass is at length expelled by vomiting ; or it passes undissolved into the duodenum, and becomes a source of irritation and disturbance during the whole of its journey through the intestines. Here then we have one common cause of dyspepsia ; and an easy and obvious preventive. Dyspeptic persons should not eat in a hurry, as busy men, and studious and solitary men, are apt to eat. They are to be cautioned against bolting their food : it must be well ground in the mill that nature has provided for that purpose. I am not at all sure that the increased lon- gevity of modern generations is not, in some degree, attributable to the capability of chewing their food which the skill of the dentist prolongs to persons far advanced in life. There are certain things upon which the gastric juice has no power. The green colouring matter of certain vegetables ; the husks of seeds ; the rinds of many fruits. You may perhaps have observed that dry currants, and the pips of apples, swallowed entire, reappear, unchanged, among the egesta. Whatever passes the stomach un- touched by the gastric liquor, passes undissolved through the whole of the alimentary canal ; provoking disorder sometimes in its transit; forming sometimes a nucleus for intestinal concretions. These substances are therefore unfit for a weak stomach. When the digestive powers are active, and the bowels slow, they may perhaps ccca- sionally be even useful. Thus brown bread — i. e., the indigestible bran, or tegu- ment of the kernel of wheat — stimulates the peristaltic motions of the intestines, and averts, in certain persons, the necessity of more direct purgatives. Unbruised mustard-seed, once so much in vogue, owed much of whatever virtue it possessed to this principle. But if these intractable substances fail to excite the proper action of the bowels, they are apt to accumulate, and to lay the foundation of serious disease. Indigestible matters, to which the pylorus refuses a passage, may remain in the stomach, and disturb its functions, for days, or even sometimes for weeks, together. If we could ascertain their presence, an emetic would be the remedy. And sooner or later vomiting is set up, and the offending substance expelled. I lately saw h 776 DYSPEPSIA. mass of hard curd — a small cream cheese in respect to consistence — which was thrown up after several days of severe gastric pain and disorder. The relief was immediate and complete. The patient had been taking large quantities of cream with his tea and coffee. In another person a similar fit of indigestion terminated m the ejection of a mass of snuff". This is no unusual source of derangement of the stomach among those who use lavishly that nasty luxury. The essential change which the chyme undergoes after leaving the stomach, ap- pears to consist in its separation into two parts : namely, into chyle, which is taken up by the lacteals ; and into excrement, which is discharged from the body. Any undissolved portions of the food become attached to this last part. We do not know exactly what is the function or agencjr of the pancreatic liquor ; but with regard to the bile our knowledge is somewhat more definite. The acid developed in the stomach combines in the duodenum with the alkali of the bile, and is more or less neutralized. Dr. Prnut conjectures that in a healthy state of the organs it is entirely neutrahzed. Bile is, moreover, the natural stimulus of the intestines: when its secretion is stopped, or its passage into the duodenum prevented, digestion and assi- milation may go on, but the bowels are usually sluggish. The hepatic secretion has, doubtless, other important uses ; but with these we are not at present concerned. It is pretty evident that the state of the biliary functions can have no direct influence in the production of mere dyspepsia. When the constituents of the bile are imper- fectly eliminated from the blood, various parts of the body may suffer detriment. And when the functions of the stomach and the functions of the liver are both disor- dered, it may be that the former organ sympathizes indirectly with the morbid state of the latter : or it may be that one and the same cause operates in producing the derangement of both organs. Let us now review the symptoms of dyspepsia which are mentioned in Cuilen's definition. The first of these is anorexia: want of- the natural appetite. Sometimes this is almost the only symptom observable. The patient is warned, by loss of appe- tite, not to take too much food ; he refrains instinctively from certain kinds of food ; or he feels perhaps absolute repugnance and disgust at the very thought of eating. Various have been the speculations respecting the immediate cause ot hunger. It has been ascribed to the action of the gastric juice upon the surface of the empty stomach. But during health the gastric juice is never present in an empty stomacli. Neither can the appetite depend upon contraction of the muscular fibres of the 3tomach ; for the emptj^ stomach, during health, is always contracted upon itself. No doubt the sensation of hunger, like all other sensations, arises from some particular condition of the nerves of the part. It returns periodically, acknowledging in this respect the influence of habit. It is sensibly aff'ected by agencies which operate upon and through the nervous system. The receipt of a piece of bad news Avill destroy, in a moment, the keenest appetite. Sometimes there is no anorexia. The appetite may even be morbidly craving and ravenous ; or capricious and uncertain. When defect of appetite is the only symptom, it may be remedied, often, by the employment of bitters, or of the mineral acids, taken twice or thrice daily, for some lime together. It would be out of place for me to speak in detail of particular me- Jicines of this kind ; it is enough if I indicate quina, columbo, gentian, quassia ; the Jiluie sulphuric and nitric acids; or a mixture of the nitric and muriatic. Nausea — vomitus. These are, in some instances, the most distressing results and ligns of the dyspepsia. Sometimes nausea comes on soon after the food is swal- lowed. Sometimes there is no nausea ; but after the lapse of a certain period, an liour or two generally, the food is rejected by vomiting. The matters thus thrown up are most frequently sour. Not seldom they are mixed also with bile, especially if the rutching has been violent, or long continued ; and then the patient is apt to ascribe the whole of his complaint to "an overflow of bile," although in fact the secretions of the liver have nothing whatever to do with it; the appearance of bile in the fluids ejected from the stomach proceeding from an inverted action of the duodenum. The effort of vomiting, however induced, will, if often repeated, be nllended with the expulsion of yellow bile. I have more than once referred you, fur DYSPEPSIA. 777 an illustration of this fact, to the phenomena of sea-sickness. The fallacy I now point out has been one cause of the notion that is prevalent among patients, and the pubHc — and not unfrequently perhaps among practitioners — that dyspepsia very commonly depends upon a disordered state of the biliary organs. The vomiting which occurs in dyspepsia is often connected with a morbid irrita- bility of 'the stomach; and it is sometimes a very troublesome symptom to treat. The carbonic acid has certainly a marked effect in allaying it, in many cases. We give it, as you know, in the effervescing saline draught, made wiih the carbonate of potash, or soda, and lemon-juice. Sometimes the mineral acids answer better. Some- times, on the other hand, alkalies — the liquor potasses, for example — or hme-water, are more effectual. In these latter cases we may presume that there is a morbid acidity of the stomach. Small doses of opium are occasionally successful when other means fail. Opiates thrown into the rectum — opium plasters to the epigastri- um — blisters to the same part : these are measures which you will sometimes have to try one after another. There are two special remedies which have been greatly extolled for their virtue in abating sickness : the hydrocyanic acid is one of them ; creasote is the other. The hydrocyanic acid I have found exceedingly useful in obstinate cases. It may be given alone — or mixed with the effervescing draught- — or combined with a few grains of the sesquicarbonate of soda. The creasote has disappointed me oftener than it has answered my hopes from it. Yet it has a de- cided influence in checking some forms of nausea ; and it is the more likely to suc- ceed, in proportion as the condition of the stomach is remote from inflammation. But after all, the grand principle on which to treat chronic vomiting — not depend ent upon disease in other parts, as the head, the kidney, or the uterus — is that laid down by Dr. William Hunter ; of reducing the quantity of food to that amount, whatever it may be, which the stomach is able and willing to retain, and of making its quality as bland and nutritious as possible. The most satisfactory case which I have had to treat upon this principle occurred some years ago, in the person of one of my hospital patients. She was brought out of Kent by her father. She had been under the care of several medical men, one of whom had been a pupil at the hospital, and recommended her as a proper patient for admission there. Her age was sixteen. She and her father both agreed in the same story ; viz., that she con stantly vomited her meals ; the food generally coming up again immediately after it was swallowed, and never remaining longer in her stomach than ten minutes. The vomiting was described as being easy ; and was neither preceded nor accompanied by nausea. She had been ill for four years : ever since a severe attack of scarlet fever. At first she vomited her meals now and then — three or four times a week — but the vomiting gradually became more and more frequent ; and at the time of her admis- sion she had vomited after every meal, for three months in succession. She had grown considerably in the four years ; and was tolerably plump ; and looked healthy ; and the catamenia had begun to appear, though scantily, in the same period : but they had been altogether suspended for a year. It was clear that a good deal of her food must have remained ; and, bearing Wil liam Hunter's case in mind, I directed that she should have a very small quantity of roast meat for dinner, and a coffee cup of milk occasionally during the day ; and no other food. I prescribed also some pills consisting of aloes and soap, to act mode- rately on the bowels. I expected to have been obliged still further to limit her food; but she never vomited again, from that time. This distressful and protracted disor- der, after long and fruitless treatment previously, yielded thus at once and easily to very simple means. Injlalio — ruclus. Flatulence, and belching. The gas that produces these symp- toms is sometimes extricated from undigested food detained in the stomach, and' in a state of fermentation : sometimes secreted, apparently, by the stomach itself ; for the flatulence comes on when the stomach is empty of food. It is apt to arise, in dys- peptic persons, if a meal happens to be delayed beyond the accustomed hour. Pa- tients complain grievously of these symptoms, and accuse the " wind in their stomach," as being at once the essence and the cause of all their complaint^. They ask tor 778 DYSPEPSIA. medicines to get rid of the wind ; and its escape may indeed be promoted by warm aromatics, and carminatives, as they are called : the relief thus afforded to the dis- tended stomach being so sudden, and for the time so complete, that the sufferer ascribes to the medicine vi7n curminis, the power of a charm. One of the most effectual and popular of these carminatives is peppermint water. A due regulation of the periods for taking food will often suffice to obviate the flatulence that belongs to emptiness. That which follows eating may, in many cases, be prevented, by swallowing, immediately before the meal, five or six grains of the extract of rhubarb, with or without a grain of cayenne pepper. If the ascending wind brings into ihe throat and mouth a portion of the solid contents of the stomach, the patient is said to ruminate. The regurgitated matters are often intensely acid ; and then an alkali may remedy the flatulence ; a teaspoonful of sal volatile, for example. Indigestion is, in many instances, attended with scarcely any pain; while in others the pain is very tormenting. Cullen speaks of it under the terms car dial gia ; and gastrodynia. Cardialgia is that less violent and more permanent uneasiness which in popular language is called heart-burn. Gastrodynia is that more severe, and usually more transient pain, which is commonly denominated spasm or cramp of the stomach. Dr. Abercrombie has some useful practical observations in respect to pain of the stomach. He speaks of it as occurring under four different forms, and I am able to bear witness to the reality of the distinctions that he has drawn. In the first place, some persons suffer pain, occasionally, when the stomach is empty, even when there is no flatulence ; and they are comforted and relieved by taking food. It is reason- able to suppose that this kind of pain depends upon some degree of acrimony of the fluids of the stomach itself. It is often removed at once by alkalies, or absorbent medicines. A teaspoonful of the aromatic spirit of ammonia, or a tablespoonful of the liquid magnesia, in a wineglass of camphor julep, will still the whole uneasiness sometimes in a moment, as if by magic. A second form of pain in the stomach is when it occurs immediately after taking food, and continues during the whole process of digestion, or until vomiting ensues, which gives instant ease. In such cases we have reason to suspect the existence of chronic inflammation, or of some undue sensibility of the mucous membrane of the stomach. The suitable remedies are such as I spoke of in the last lecture. I might have mentioned a form of medicine which Dr. James Johnson has found espe- cially serviceable against this morbid sensibility ; I mean the nitrate of silver, in small doses. In a third species of painful disorder of the stomach the pain does not begin till from two to four hours after a meal, but continues for several hours. This is a very common form of complaint. Dr. Abercrombie is of opinion that the pain is seated in the duodenum, and connected with inflammatory action, or with morbid sensitive- ness of the mucous lining of that bowel. He says it is frequently accompanied by pain and tenderness of the right hypochondrium ; and that the hver is often blamed when it really is not in fault. This last remark I well believe ; but I am not so easily persuaded that the pain is duodenal. I believe it depends upon acidity in the prinice vias. It has been ascertained by several chemists, that the acid which is pre- sent in the gastric juice is the muriatic. Dr. Prout holds that the source of this muriatic acid is the common salt which exists in the blood, and that the decomposi- tion of this salt is owing to the immediate agency of some modification of electricity; and he conceives that the principal digestive organs represent a kind of galvanic apparatus, of which the mucous membrane of the stomach and intestinal canal may be considered as the acid or positive pole, while the hepatic system is the alkaline or negative pole. However this may be, it is certain that the muriatic acid contained in the stomach is often in excess : other acids are ako found there — the acetic, and more especially the lactic; and when the food, now converted into chyme, passes into the duodenum, the remaining superfluous acid teazes the stomach. I think this explanation of the cause of the pain is a more probable one than Dr. Abercrombie's, because jou may generally mitigate or remove the pain by introducing an alkan mto the stomach, whereby the acid is neutralized : even the swallowing a cup of DYSPEPSIA. 779 warm tea, by which the acid is diluted or w^ashed away, often stops the pain. And I have in numerous instances succeeded in preventing the recurrence of this pain, by directing the patient to take a small quantity of alkali, in some aromatic water, immediately after his dinner. According to Dr. Abercrombie's theory, the pain ought not to be so immediately allayed by these remedies ; and, since the food is gra- dually propellea into the duodenum as it is digested, the pain should begin, I think (supposing him right), earlier than it does. Dr. Abercrombie has found nothing of more general utility in these cases than the sulphate of iron, combined with one grain of aloes, and five grains of aromatic powder, taken three times a day. He praises lime-water, also, and small opiates, and a combination of bismuth and rhu- barb. What its modus operandi is I know not, but I am sure that bismuth is a very effectual remedy for some kinds of gastric distress. Cases now and then occur in which this pain, succeeding a meal, and the deposit of lithates in the urine, would seem to indicate the propriety of an alkaline treatment, but which really are more benefited by the mineral acids. How to distinguish these exceptional cases, unless by trial, 1 have not yet learned. Any detected admixture of phosphates might perhaps furnish the requisite clue. Pain in the stomach occurs in a fourth form, coming on at uncertain intervals in most violent paroxysms, and properly called gastrodynia. It is often accompanied by a sensation of distension, much anxiety, and extreme restlessness. In females it is frequently combined w^ilh hysterical symptoms. This form Dr. Abercrombie supposes to depend upon over distension of the stomach ; and it may be so; certainly great quantities of air are sometimes extricated ; and the pain is not confined to the stomach, but shoots through to the back and between the shoulders. I suspect that the pain is sometimes neuralgic. It is often very intractable ; occasionally it yields to carminatives, • Dr. Abercrombie states that he has observed ihe most effectual relief in such cases to have been obtained from exciting a brisk action of the bowels by means of a strong purgative enema. He makes this practical remark, which is worth attending to. From the facilities with which such affections often yield to the remedy just mentioned, it appears not improbable that the pain may be sometimes situated in the arch of the colon. Wherever its seat may be, I know that it is fre- quently removed by a mustard poultice laid upon the epigastrium. Opium also is of eminent use in many of these cases ; and bismuth ; and cordials : but I have seen more rapid and decided rehef afforded by the prussic acid than by anything else ; and the cure so wrought is often permanent. It does not bring ease in all cases, nor is it a medicine that is any particular favourite of mine, yet its good effect is in some instances so striking, that if this were its only virtue I should esteem the hydrocyanic acid a most valuable remedy. You will meet sometimes with what is called spasm of the stomach (and I sup- pose it is such) in gouty people ; who are then said to have gout in the stomach. The pain comes on in sudden and severe paroxysms ; and is removable in general by laudanum and stimulants, brandy, for example; or by the mustard poultice. On these cases, however, we look with jealousy and apprehension. In some in- stances the attack is really inflammatory, and would then be aggravated by a stimu- lant treatment. There is yet another modification of uneasiness and disorder of the stomach, of which the distinguishing characteristic is the vomiting, or rather the eructation of a thin watery liquid, sometimes sourish, but usually insipid and tasteless, and often described by the patients themselves as being cold. This is what Cullen calls pyrosis, the water-brash. It is a disorder much more frequent in the lower ranks of society than in others. It is particularly common in Scotland, and is there ascribed to the large employment of farinaceous substances as food, and especially of oat-meal. But it is said to be still more common in Lapland. Dr. Cullen, w^ho saw a great deal of it, says that its paroxysms " usually come on in the morning and forenoon, when the stomach is empty. The first symptom of it is a pain at the pit of tho stomach, with a sense of constriction, as if the stomach was drawn towards Hie back. The pain is increased by raising the body into an erect posture, and tnerefore tnc body is bended forward. The pain is often very severe ; and after continuing for 780 DYSPEPSIA. some time, it brings on an eructation of a thin watery fluid inconsiderable quantity." Such is Cullen's description of pyrosis. He states that the complaint often occurs without other evidence of dj^spepsia ; but this is not consistent with the experience of subsequent observers. It is a symptom sometimes of organic disease of the stomach. In one remarkable case of pyrosis which I saw, and in which not less than three pints of this thin tasteless liquid was brought up every day, the stomach, after death, was found to all appearance healthy ; but it had been pressed upon by an enormous liver. I mention these facts that you may not suppose pyrosis to be ahvays, as Cullen has described it, a substantive and idiopathic malady. When pyrosis is not caused by organic disease in the stomach or in the liver, it will yield in general to opium, and especially to opium in combination with astrin gents. The pulvis kino compositiis of the Pharmacopoeia is an admirable remedy for it. But we often have to contend with this difficulty, that the bowels, in case.s of pyrosis, are generally confined, and that the opium tends to aggravate this unna- tural condition; so that it becomes necessary to administer some aperient daily while the kino and opium are given: castor oil, or confection of senna, or cathartic extract. Cosliveness is, in fact, a very frequent concomitant of dj-spepsia, as Cullen's defi- nition affirms (plerumque cum alvo adstricta). And this sluggish state of the bowels often aggravates, if it does not produce, the dyspepsia. At anj'' rate the defective powers and uneasy sensations of the stomach are rectified, in many instances, by measures which promote the regular and healthy evacuation of the intestines. AVithout professing to go into detail in this matter, I may state that, in our remedial attempts, we should imitate, as much as we can, the processes of nature. The mixed contents of the small intestines furnish the natural stimulus of their peristalic movements ; and the excrement excites the larger bowels. When this natural stimu- lus is insufficient, the want may be supplied by some substance which is involved in the food, and accompanies it in its progress — as the bran of brown bread, already mentioned, or a few grains of rhubarb or of aloes swallowed immediately before dinner. In adjusting the proper quantity of the drug the patient must assist the physician. It should be just so much as suffices to effect what nature neglects to do, and no more. With some persons an aperient pill acts more comfortablj^ and opportunely if taken at bed-time. Sometimes diarrhoea is associated with indigestion. This is usually connected with an excess of acid in the primse vise. The principle of treatment in such cases is obvious. There are innumerable sympathies of distant parts with a dyspeptic stomach, .n respect to which lean do little more than barely enumerate a few. Thus indigestion is often accompanied by pain in the head, with some confusion of thought : or. at all events, with a loss of mental energy^ and alertness. Together with a violent headache there are frequently nausea and vomiting ; and the complaint is popularly known by the name of the sick-headache : or, in the fashionable jargon of the da}', as a bilious headache. I must refer you to a paper of Dr. Fothergill's, in the sixth volume of the Medical Observations and Inquiries, for a very good account of this troublesome complication. I shall hereafter have a good deal to say respecting certain morbid conditions of the urine, which take their rise sometimes from faulty digestion in the stomach, sometimes from faulty assimilation of the digested aliment in the more advanced stages of the process of nutrition. These conditions of the urine, indicating grave derangements of the whole system, furnish the characters and the names of several distinct maladies. I told j'ou, in a former lecture, that certain affections of the viscera of the thorax are liable to be produced by mere indigestion. Palpitations of the heart, irregulari- ties of the pulse, fits of asthma, are no uncommon accompaniments of a disordered stomach. This is partly to be ascribed to that reflex sympathy between the parts concerned, which I have so frequently mentioned ; partly to the effect of flatulence, which, by resisting the descent of the diaphragm, impedes the free working of the lungs and of the heart. I told you, at the same time, that these symptoms torment mnny persons with the belief that they spring from organic disease. This notion is DYSPEPSIA. 781 particularly apt to infest the minds of medical students. I suppose most teachers in our profession partake of that sort of experience which Dr. James Gregory, of Edin- burgh, used to speak of in his lectures. He said that scarcely a winter passed over in which several of his pupils did not apply to him on account of palpitations sup- posed by them to depend upon structural disease of the heart : and in no single in- stance were their apprehensions well founded. They were all cases of mere dys- pepsia and hypochondriasis. D3'^spepsia is often connected with phthisis, with leucorrhoea, with amenorrhosa and chlorosis : and some persons imagine that these diseases are caused by the dyspepsia. Indigestion may lead indirectly to the development of consumption, by producing debihty ; but the truer view of the matter seems to be that the dyspepsia is a consequence, rather than an exciting cause, of these complaints. When, for instance, leucorrhoea is cured by topical astringents, as it often may be, the indiges- tion frequently is cured too. One of the worst occasional concomitants of dyspepsia is that peculiar state of the mind to which I just now alluded under the term hypochondriasis. This is, in truth, a species of insanity : but it is so often connected with disorder of the digestive organs, that Cullen, whose descriptions of disease are admirably clear and true, however faulty many of his theories may be, defines hypochondriasis to be ^^Dys- pepsia — cum languore, ma^stitia, et metu, ex causis non sequis." In the following short paragraph he completes the picture. " In certain persons there is a state of mind distinguished by the concurrence of the following circumstances. A languor, listlessness, or want of resolution and activity with respect to all undertakings : a disposition to seriousness, sadness, and timidity : as to all future events, an appre- hension of the worst or most unhappy state of them ; and therefore, often upon slight grounds, an. apprehension of great evil. Such persons are particularly atten- tive to the state of their own health, to every the smallest change of feeling in their bodies : and from any unusual feeling perhaps of the slightest kind, they apprehend great danger, and even death itself. In respect to all these feelings and apprehen- sions, there is commonly the most obstinate belief and persuasion." Now when the attention of the hypochondriac is thus morbidly fixed upon the states and sensations of his digestive organs (as it is very apt to be) the patient be- comes a plague to his physicians as well as to himself. There are a few simple rules which ought always to be kept in mind in our treat' rnent of dyspepsia ; although we can seldom enforce them, as they ought to be en- forced, upon our padents. What patients want, in general, is some medicine that will relieve them from their discomfort and uneasy feelings, and allow them, at the same time, to go on in the indulgence of those habits which have generated the dis- comfort. And such remedies have not yet been discovered. One great and indispensable principle in the treatment of indigestion, is that of restricting the quantity of food taken at any one time. The gastric juice is probably secreted in a tolerably uniform quantity. The muscular contractions of the stomach must needs be impaired or impeded by much distension of thai organ. For both these reasons the amount of food introduced into the stomach should be kept within the limits of its capacity and powers. The great good which the late Mr. Abernethy unquestionably did to a host of dyspeptic patients, was owing much more, I am per- suaded, to the rules of diet, and the restrictions as to quantity, which he laid down, than to his eternal blue pill. Again, as Dr. Abercrombie has well remarked, and as Dr. Beaumont actually saw, various articles of food are soluble in the stomach with various degrees of readine.'s. Therefore, when the digestion is liable to be easily impaired, it is of great import- ance, not only to refrain from those substances which are known to be soluble with difficulty, but also to avoid mixing together in the stomach different substances which are of different degrees of solubility. Hence there are two reasons why it is salutary to dine off one dish. 1st. Because we avoid the injurious admixture just adverted to ; and, 2dly, because we escape that appetite, and desire to eat too larjge a quantit},, which is provoked by new and various flavours. 3q 782 DYSPEPSIA. And another very important principle, f^reatly insisted on by Mr. Abernetliy, is, that the stomach should have time to perforna one task before another is imposed upon it. He always made his patients (at least he always strongly exhorted them) to interpose not less than six hours between one meal and another. Allowing from threy to five hours for the digestion of a meal, and one hour over for the stomach to rest in, Mr. Abernethy's rule seems as much founded in reason as it is justified by experience. But we preach in vain on these topics. Mr. Abernethy was in the habit of saying that no person could be persuaded to pay due attention to his digestive organs, till death, or the dread of death, was staring him in the face. I have now in my mind a family consisting of a mother and three grown-up daughters, who are continually ailing and valetudinary. They profess to have great respect for my pro- fessional advice : yet I never can induce them to think that their plan of eating is a bad one. They are not early risers. They get to breakfast about half after ten or eleven. At two they think it absolutely necessary to eat luncheon, which consists of a mutton chop or some hashed meat, with vegetables. At six they dine : and at eight they drink tea : and then they eat no more till the next breakfast. And this is just a picture of the habits of scores of famihes. They huddle all their food into the stomach, at four periods, within seven or eight hours ; and leave it idle for six- teen or seventeen. D3'speptic patients are very importunate to know ivhat they may eat, and (more so still) what they ma}^ drink. It is of course impossible to lay down any general rules which will suit every case. The stomach has its idiosyncrasies. I remember seeing a publication some years ago, one section of which had this startling title, — " Cases of poisoning by a Mutton Chop." Dr. Prout knew a person who could not eat mutton in any form. He was thought to be whimsical, and mutton was frequently served up to him under some other guise, without his knowing it ; but it invariably caused violent vomiting and diarrhosa. Yet, for the average of stomachs, mutton is probably the most digestible of all meats. And for the average of stomachs some useful general directions may doubtless be given. In fevers and inflammatory disorders, experience has taught us to forbid or limit the use of flesh meat on account of its stimulating qualities. And when the stomach itself is affected with chronic inflammation, or with morbid sensibility, a diet restricted to farinaceous substances, and milk, is sometimes attended with the happiest conse- quences. I suspect that a false analogy has led some into the mistake of supposing that animal food ought to be refrained from, or taken in a scanty proportion, in merely dyspeptic complaints. Animal food is easier of digestion, in the human stomach, than vegetable food. It is nearer, in its composition, to the textures into which it is to be incorporated by assimilation. There is less of " conversion" requisite. Indeed we may look upon the appropriation of vegetable matter, by granivorous and grami- nivorous animals, as one stage of the process by which such vegetable matter is prepared for the sustenance of carnivorous animals : even as one great end of vege- table life seems to be that of generating or concocting matter for the nutrition of the former class, out of inorganic materials, not fitted for that purpose. A more elaborate digesting apparatus is provided for the vegetable eaters. Man, indeed, is omnivorous. But his organs of digestion are more like those of the carnivorous than of the grani- vorous races. And it is notorious that vegetable food, when the stomach is weak, is followed by more flatulence, that is, is digested with niore tardiness and difficulty, ihan animal food. Nevertheless, a mixture of the two, of well roasted or boiled flesh or fowl, with a moderate portion of thoroughly cooked vegetables, is better suited, in my opinion, for a feeble stomach, than a rigid adhesion to either kind of aliment singly Each of the four great classes of alimentary principles specified by Dr. Prout should be represented; the aqueous, the saccharine, the albuminous, and the oleaginous. All meats that have been hardened by culinary art, or by condiments, should be avoided by him, who, as the vulgar express it, has "a bad digester;" all cured meats I mean — ham, tongue, sausages, and so forth. Mutton is thought to be ..lore readily digestible than beef. Pork, its lean part at least, is much less so than either. All raw vegetables also must be eschewed ; salads, cucumbers, pickles. But if we press our prohibitions much more strictly than this, we incur the risk of DYSPEPSIA. 783 fixing the patient's attention too curiously upon his diet, and upon the sensations of his stomach ; and of rendering him hypochondriacally ahve to the miserable subject of his feeding. Again, you will be continually asked whether you recommend malt liquor or wine, wine or brandy and water, vvhite wine or port, sherry or madeira. Now it would be very easy to propound some positive rules in this matter, but it would not be so easy to vindicate them. Some allowance must be made, no doubt, for custom. I believe, however, that most dyspeptic persons would be better without any of these drinks. But it is very difficult to persuade them that the habitual use of strong- liquors in small quantities can have any injurious effects. "It is not easy (says Cullen) to engage men to break in upon established habits, or to renounce the pur- suits of pleasure ; and particularly to persuade men that those practices are truly hurtful, which they have often practised with seeming impunity." They are too ready to believe that it is unsafe to abandon their accustomed indulgence. A friend of mine, who visited, some years since, many of the American prisons, tells me that the health of even the most inveterate spirit-drinkers improves, instead of suffering, upon the sudden and total abstinence from spirits, which the regulations of those prisons enforce. There certainly are cases in which the digestion seems to be helped by a moderate quantity of wine, or beer, or spirits ; yet no one can say before-hand — at least I cannot — which of them is to be preferred. Upon these points patients should interrogate their own sensations and experience, instead of seeking the oracu- lar counsel of a physician. Drinks which are followed by evident disturbance and discomfort are manifestly unfit. And even when a favourable effect, for the time, appears to be produced, there is always a risk of ultimate detriment to the powers of the stomach from this habitual excitement. There are states of mind and habits of life, which, having no direct relation to the organs of digestion, yet exercise a material influence over their functions. Mental distress; mental solicitude ; mental toil ; over-much study ; Avant of exercise : these are all prohfic sources of dyspepsia. Sedentary habits, when their injurious effects are known, may be altered : excessive intellectual labour may be abandoned : but it is seldom that we can minister to a wounded or an anxious spirit. Our task is hardest of all when the patient's anxiety relates to his own complaints ; when he is morbidly engrossed by his bodily feelings, and despondent about its recovery. The management of the mind of a hypochondriac is peculiarly nice and difficult. It wilt not do to treat him as if his ailments were imaginar}^ He disbelieves you, contemns your judgment, and deserts you: to be fleeced perhaps by some villanous quack. You must hear what he has to say ; show an interest in his case ; and prescribe for him : assuring him that you understand his malady, that it is curable, and that he will be cured provided he follows your directions. If you can succeed in gaining his confidence, and in persuading him of this, the battle is half won. To tell such a person, however, not to think of his grievances would be worse than useless. The very effort to drive a subject from our thoughts fixes it there more surely. But you must endeavour to turn his attention to other things ; and to awaken in him some new interest. Prescribe change: change of air; change of place and of scenery; change of society. Get him to travel in search of health ; and the chances are in favour of his finding it. A tour, in fine weather, and through a pleasant country, combines almost all the ingredients which are, seperately even, desirable : the with- drawal of the mind from its ordinary pursuits and cares ; the diversion of the atten- tion from one's self, by new and varied objects ; exercise carried on in the open air ; a holiday from intellectual toil. Six weeks among the mountains of Switzerland, or upon the rivers of Germany, Avill often do more towards restoring a dyspeptic hypo- chondriac than a twelvemonth's regimen and physicking at home. With these disjointed hints, gentlemen, I must request j^ou to be satified in respect to the principles upon which dyspepsia — and the hypochondriasis, which is in gene- ral so closely linked with dyspepsia — are to be managed. A full discussion of "the.<=« subjects in detail would furnish matter for several lectures. 784 ENTERITIS. LECTURE LXXI. Enteritis: its symptoms ; causes; treatment. Mechanical occlusion of the Intes tinal Tube. Culic. Colica Fictonum : its symptoms, complications, treatment, and prevention. Some of the diseased states of the intestinal canal, while they difTer a good deal in their essential nature, have yet many characters in common. Colic ; ileus ; enteritis ; mechanical obstruction of the tube. It will be convenient, therefore, to consider these disorders in succession, and, in some degree, in connection with each other. In colic we have pain of the abdomen ; pain of a twisting or wringing kind, occu- pying generally the umbilical region ; vomiting ; and costive bowels. Similar pains are apt to occur in diarrhoea ; but they are transitory, and are then termed gripings, or more learnedly, tormina. When they are violent, and more permanent, and above all, when attended with constipation, they constitute colic. You have not forgotten the symptoms of peritonitis. They are, briefly, pain in the abdomen, increased on pressure ; and fever. Now, if to the symptoms of colic, you add the symptoms of peritonitis, you have the symptoms of enteritis : by which word I desire to express the disease that is commonly called inflammation of the bowels. The term has lately been extended so as to signify any and every form of inflammation which any portion or tissue of the intestinal canal within the belly may suffer; but I use it in the old-fashioned meaning. Cullen makes two species of enteritis. One of these consists in inflam- mation of the mucous membrane of the intestinal tube : he calls it enteritis erythe matica. That is not the disorder I am about to speak of; but the other of his spe- cies, the enteritis phlegmonodea. I say that in colic, we have abdominal pain, constipation, and vomiting. In peritonitis, the functions of the stomach and intestines are not, necessarily, affected : in enteritis they are. There is inflammation, not merely of the peritoneal coat, but of the areolar tissue uniting the several tunics, probably of the muscular tissue also, and often of the whole substance of the bowel at the inflamed part. When the intestinal channel is any how closed up, and a bar placed to the pass- age of its contents, the symptoms of coHc are very apt to ensue ; and at length, the obstacle continuing, fatal inflammation is set up. The term ileus is applied, I believe, to those cases, whether inflammatory or not, in which, by an inverted action of the intestines, their contents are carried, in 3 retrograde course, into the stomach, and thence out of the body by vomiting. Having made these explanations, I shall now address myself more especially to Jhe consideration of enteritis. It is of much practical importance to discriminate between enteritis and the dis- orders that resemble it ; and particularly to distinguish it from colic. When it com- mences, as it sometimes does, with distinct rigors, and is attended by thirst, a hot skin, and a hard and frequent pulse, there is no room for doubt. But it often begins in- sidiously, with mere colicky symptoms ; the pain, at first, is not much augmented, It may even be somewhat eased, by steady pressure. If we mistake colic for enteritis, the error is of no great moment ; but the opposite mistake, which is more common, may be fatal. Blood-letting, and the other remedies of enteritis, will not aggra- vate the mere colic ; they may even, though unnecessary, relieve the patient. — Some of the remedies of mere cohc are, however, highly dangerous when there is inflammation of the bowel. Physicians may fall into this error : patients who choose to prescribe for themselves, commonly do so. They take stimulants, cordials, car- minatives — the pleasantest and nearest at hand is a glass of brandy, or of gin. And in true colic these means are frequently of great service ; but they exasperate the 6>yniptoms, and increase the mischief when the disease is enteritis. Indeed, treat- ment of this kind will sometimes urge colic into enteritis. If the case be ambiguous, ENTERITIS. 78o. you must act upon the most unfavourable supposition, and treat the complaint as if you were sure that inflammation was present. The pain of enteritis is increased by pressure. The pain of coHc is not only not made worse, but it is actually mitigated often, by pressure ; and it usually intermits entirely. I know that when there is simply flatulent distension of the intestines, pressure does sometimes increase the patient's uneasiness ; but the uneasy sensation is very different from that acute sensibility which belongs to inflammation of their peritoneal covering. In enteritis there are also paroxysms of severe pain, determined, probably, by the peristaltic movements, or by the temporary distension of the inflamed parts of the bowel ; and the pain has frequently a twisting character : but there is not any thorough intermission. There is a duller abiding pain between the sharper fits. It is to be observed also, as a diagnostic circumstance, that, as in peritonitis, the patient lies on his back, with his knees drawn up, and is fixed in that position, and for the very same reasons. If, in his agony, he tosses about his arms, the trunk is kept motionless, and the respiration is thoracic : whereas in mere colic the mode of breathing is not altered, and the patient is apt to be turning and writhing in all pos- tures, and out of one posture into another. The nausea and vomiting are often most distressing. The patient not only rejects immediately whatever food, drink, or medicine he swallows, but he has fits of retch- ing when the stomach is empty. In some instances, matters are cast up having the appearance, and something of the odour, of liquid feces : or resembling, at any rate, the offensive fluids which are found in the small intestines after death in these cases. I cannot say that I have ever seen genuine excrement ejected, unequivocal ordure: yet this may well happen if it be true that clysters, introduced into the rectum, have been voided through the mouth. Such a phenomenon would show that the whole tube was pervious ; that there was no mechanical obstruction. Although the fever, in the outset, may be high, and the pulse strong and hard, it soon becomes (as in all acute abdominal inflammations) small and wiry ; or weak, and like a thread. In bad cases, as the disease proceeds, the abdomen begins to swell, becomes tympanitic ; hiccup sometimes comes on ; the pulse intermits or beats irregularly ; the extremities grow cold ; the features are sharpened and ghastly ; cold sweats break out ; the pain ceases perhaps ; and the sphincters relax. The head is generally unaffected. Now and then delirium occurs late in the disease ; but much more frequently the intellect remains clear to the very last. Death begins at the heart, and takes place in the way of asthenia. You may probably have observed that the symptoms which I have been describ- ing are just the symptoms which the surgeon so frequently encounters in cases of strangulated hernia. The symptoms of that surgical complaint are, in truth, most commonly at least, the symptoms of enteritis, caused by the forcible closure of the bowel. Obstruction to the passage of the contents of the gut gives rise to its inflam mation. And we often find, after death preceded by the signs of enteritis, an internal mechanical obstruction — an internal strangulated hernia. In some cases bands or strings of coagulable lymph, the products of bygone inflammation, have formed snares (so to speak) for the gut, which at length they catch and constrict. They do no harm till some coil of intestine gets beneath or beyond them; and then they strangle it, as the phrase is. I have twice seen (as I think I formerly stated) the appendix vermiformis prove the immediate cause of fatal internal hernia. In one of these cases, the person had been a private patient of Dr. Macmichael ; and I went with him to examine the body. The free end of the appendix had become adherent to the mesocolon ; and so a loop was made, through which a portion of the gut had passed. In the other instance, which I saw in Edinburgh, the appendix was lite- rally tied round a piece of the intestine. Sometimes, again, there is intussusception : the upper part of the tube slips into the lower, fills it up; obstructs it; and inflam- mation fixes it there. Or it may be that a chronic thickening of the coats of the in- testine has narrowed its channel ; or a tumour presses upon the intestine from with- out ; or some foreign substance, or morbid accumulation, plugs it up within ; in all which cases a chronic dfsorder passes at length into acute inflammation. A very small hernia at one of the usual orifices — not large enough to manifest itself ext^r 50 3 Q 2 786 ENTERITIS. nally — is sometimes the cause of the obstruction ; even though only a portion of one side of the gut may be nipped in the aperture. Sometimes, but according to my experience less frequently, there is no mechanical impedime>it to account for the constipation. In all cases, whether there be mechanical obstruction or not, the inflamed portion of the gut is of a red or dark colour ; distended by its gaseous or liquid contents ; covered often, on its peritoneal surface, with co- agulable lymph ; or adherent to the contiguous organs. When the gut is mechani- cally closed, the part which lies on this side the obstacle, as we follow the natural course of the channel, is inflamed ; the part which lies beyond it is pale, contracted, and to all appearance, healthy. The line of demarcation is abrupt and strong; and it is determined by the obstacle. And the distinction between the healthy and in- flamed portions is usually as sudden and decided, when there is no apparent obstacle. I mean that up to a certain spot the intestine is red like a cherry, or dark like a grape, large, and smeared (perhaps) -with lymph or with pus ; while immediately beyond that point, and throughout the remainder of its course, it is white, empt}', and shrunk up into the semblance of a cord. The pathology of these last forms of the disease is full of difficulty. Some have held that the contracted part was the original seat of disease, namely, of spasm; and that the upper adjoining portion of intestine be- cime distended and inflamed in consequence of such spasm. Without attempting to explain these phenomena, which are comparatively unfrequent, I content myself with observing that it is the distended part which is ihe really inflamed part, and that its muscular coat appears to have lost its natural contractile power — not (I fanc}-^) from over-stretching, as now and then happens to the urinary bladder — but from the efl^ect of the inflammation. The inflamed portion of bowel is often of a very dark colour, and even almost black, from the great congestion of blood in its tissues. Now this black colour has sometimes been erroneously set down as an evidence of gangrene. You must not trust to the mere colour, however. If the coats of the bowel be firm, and if the pe- culiar odour of gangrene be wanting, you are not to conclude that mortification has taken place, simply from the dark appearance of the intestine. Enteritis, not dependent upon any mechanical occlusion of the bowel, may arise under the operation of the ordinary causes of internal inflammation : cold and wet, for instance, applied externally, and especially to tha feet and legs. Cold is thought to be particularly injurious in this way when the exposure happens soon after a meal : probably because at that time the digestive organs, being in activity, receive a more copious supply of blood. The mechanical impediments that occur within the bowel, are still more various in kind than those which constrict it from withotd. Hardened fecal matters: intestinal concretions. Some of these are curious, and I shall hereafter have a word or two to say respecting their composition. Persons who are in the habit of taking a good deal of magnesia, or of chalk, to relieve acidity and heartburn, are liable to have these substances accumulate, and become indurated in the intestines. They generally begin to collect, I believe, around some accidental nucleus : and such a nucleus may very readily be supplied. A cherry-stone, a fish-bone, a gall-stone that has found its way into the bowei. Even a pill, prescribed to cure, may thus come to kill one's patient. Dr. Prout was asked to analyze certain odd-shaped, triangular bodies which had been voided at stool, and were supposed to be gall-stones: but he found that they were specimens of Plummer's pill, which had defied the solv>!nt action of the gastric juice, and had passed into, and lingered in, the bowels. Unbruised mustard- seed, and carbonate of iron, are other remedial substances which, injudiciously ad- ministered, have collected in hard masses, and caused intestinal disease. It is seldom that we can discover, during life, what is the exact nature of the mechanical obstacle : but I have observed this peculiarity in most of the cases in which I have known it produced by intussusception, that after severe and sudden symptoms of obstruction and inflammation, blood has been passed by stool. Sometimes the included portion of bowel itself sloughs away, and is expelled ^;er anum. Inflammation of the bowels requires very much the same kind of treatment as penionitis : indeed, the disease is in most cases peritonitis and something more. The ENTERITIS. , ' 787 patient must strictly abstain from every sort of stimulus, and confine himself as much as possible to the horizontal position. He must lose blood also from the arm, and the earlier the better. The lancet is not to be withheld merely because the pulse is small. If the artery becomes fuller, and its beating more distinct, under venesec- tion — nay, if the patient does not become faint — the first bleeding should be a large one. This is not only the safer plan, but in the long run it is the most economical of the blood and strength of the patient. As in simple peritonitis, the abdomen must be covered with leeches, and afterwards with fomentation cloths. Should one spot or region be more painful and tender than another, on that part the leeches are to be accumulated. It may be requisite to repeat the venesection and the leeching once, or twice, or many times ; the propriety of such repetition depending upon the urgency and obstinacy of the symptoms, and upon the age and state of the patient. I am speaking of idiopathic enteritis, and of its earher stages. In the advanced periods, when feebleness of the pulse is associated with tympany of the belly and coldness of the surface, it betokens weakness and sinking, and the tendency to death by asthenia; and, consequently, it then indicates support rather than depletion. So also when the enteritis is not idiopathic, but consecutive — when we have reason to believe that it arises out of a firm mechanical impediment — our employment of blood- letting must needs be modified by that circumstance. One point in the management of enteritis, requiring great caution and judgment, relates to the exhibition of purgative medicines. The costive state of the bowels is apt to be looked upon as the main evil, and their evacuation as the chief indication of treatment; but great mischief, I apprehend, is likely to arise from the exclusive pursuit of that indication. I am still speaking of the idiopathic disease, where it is presumable that no mechanical obstacle exists to render the passage of the feces im- possible. Purgatives given by the mouth are often rejected by the stomach, with great distress to the patient. If they are retained, and fail to operate, they must do more harm than good. Certainly they should not precede the venesection. I well remember, though it is now many years ago, being myself badly treated for enteritis. Being ill, in a strange place, I sent for the nearest practitioner, who happened to be a very ignorant man. Finding that I was sick, and that my bowels did not act, he gave me, for two or three days in succession, strong drastic purges, with no other effect than that of increasing my sickness, and adding to the abdominal pain I suf- fered. I was then seen by a most intelligent physician (this was before I had paid miy attention to physic myself), and the first thing he did was to have me copiously bled ; and the immediate effect of that bleeding was to send me to the night-chair. And I am persuaded that when evacuations follow the administration of purgatives in such cases, they are often owing to the blood-letting and other antiphlogistic measures that are employed at the same time. These are the opinions of Dr. Abercrombie also, who says, " I confess my own impression distinctly to be, that the use of pur- gatives makes no part of the treatment of the early stages of enteritis ; on the con- trary, that they are rather likely to be hurtful until the inflammation has been sub- dued." It is an instructive fact, that when purgative medicines do operate during the height of the inflammation, the stools they produce are merely watery ; and it is only after the inflammation has been reduced that feces are discharged, and then in such quantity sometimes as to show that they must have been shut up in the bowels during the period of active inflammation. You should wait, then, for the effect of other measures, blood-letting, leeching, fomentation, before you give active purgatives by the mouth; and in all stages of the disease, whatever laxatives are given should be of the mildest kind, such as are least likely to excite irritation of either the stomach or bowels. The same objections do not apply to enemata, which soothe while they evacuate the lower parts of the canal. You will read or hear of great service done by an infusion of tobacco, or by the smoke of tobacco, thrown into the bowels Uhrough the rectum. Dr. Abercrombie speaks of a weak infusion of the leaves as being a remedy of very general utility. It should, I apprehend, be a weak infusion to be at all safe; but, of my own knowledge, I can tell you little or nothing about it. I do Know, however, that the injection of a large quantity of merely warm water is often of mucl- 788 MECHANICAL OCCLUSION OF THE INTESTINAL TUBE. use : from two to six pints, for example, thrown up gradually and gently. Indurated feces are softened and brought away in this manner, and the warm water acts as an internal fomentation. Of internal medicines I believe the best you can give is a combination of calomel and opium, in such proportions as will restrain the purgative qualities of the calomel. The opium allays pain, and, perhaps, relaxes spasm ; mercury tends to arrest the inflammatory action ; and the more immediate effects of this combination are often found to be, a setthng of the irritable stomach, a disposition to diaphoresis, and an improved pulse. To sum up, then, bleeding, and calomel and opium are to be resorted to for checking the inflammation : and when that is in great measure abated (and probably not before), it will be right to give some mild laxative to clear out the bowels. There can be none more suitable or convenient than castor oil. But before we ven- ture upon purgatives by the mouth it will be proper to wash out the bowels by lavements of tepid water. These injections may sometimes have mechanically a beneficial effect upon the parts concerned in the inflammatior) ; untwisting, for ex- ample, a twisted bowel ; or setting free the half-incarcerated intestine. It is often expedient to administer them through a long tube passed as far as possible into the rectum. There is one very important point in the treatment of enteritis that I have yet to mention. I have told you that in the advanced stage of the disease symptoms of sinking often come on ; a total cessation of pain, failure of the vital powers, and coldness of the body. These symptoms, this collapse and approach to syncope, are generally considered to denote grangrene, and, therefore, a hopeless state of disease. Yet in many cases which have proved fatal after similar symptoms, not a trace of gangrene has been discoverable. So that this unpromising change in the symptoms does not always indicate a morbid condition which is necessarily mortal. And if the patients are to be saved at ail, they are to be saved by wine and support. We must combat the obvious tendency to death by asthenia. " A man, aged forty, was affected with enteritis in the usual form, for which ho was treated in the most judicious manner by a respectable practitioner. On the fifth day the pain ceased: the pulse was 140, and extremely feeble and irregular; his face was pale, the features were collapsed, and his whole body was covered with cold perspiration ; his bowels had been moved. In this condition (says Dr. Aber- crombie, from whom I quote the case) I saw him for the first time. Wine was then given him, at first in large quantities, and upon the whole, to the extent of from two to three bottles during the next twenty-four hours. On the following day his ap- pearance was improved; his pulse 120, and regular; the wine was continued in diminished quantity. On the third day his pulse was 112, and of good strength, and in a few days more he was well." Dr. Abercrombie relates other cases to the same effect ; and most physicians, I suppose, have occasionally seen such. They teach us that we must not abandon our patients in despair, even under the most adverse circumstances. If diarrhoea should supervene with this state of collapse, opiates must be joined with the wine. External warmth is also a powerful auxiliary. I know of no cases of disease more painful to witness or to treat than those which result from invincible obstruction of the intestinal lube. They are usually attended, at length, with enteritis ; but they differ much in some respects from what I have called idiopathic enteritis. The inflammation is an accident or consequence of the obstruction ; or of the means used to overcome it. They happen usually somewhat in this manner. A person thinks it expedient to take some aperient medicine. It has no effect. He repeats the dose. It causes pain and gripings, and probably sick- ness also ; but still the bowels are not moved. Enemata are employed. They bring away, perhaps, some hardened feces, but there is no further relief. Mean- while' i-ne patient may have a clean tongue, a quiet pulse,. a cool and soft skin, and a supple and painless abdomen. Purgatives of a more drastic kind are tried, but tried .n vain ; and the physician is summoned. MECHANICAL OCCLUSION OF THE INTESTINAL TUBE. 789 Now the first thing which you have to do, when called to a case of " obstruction of the bowels," is to search narrowly whether there be not some unsuspected exter- nal hernia. All delicacy must be waived ; and every part of the body, where hernia may possibly show itself, must be submitted to inspection. If none be found, the rectum, and in women the vagina, must be severally explored. Stricture, or a quarry of impacted feces, may possibly be detected in the one : a uterine or other tumour, pressing upon the bowel, may perchance be felt through the other. I shall never forget the shock I once experienced on being sent for to see a woman, of mid- dle age, who was in articulo mortis, and who, as I was told, had for some days been labouring under sickness, pain in the abdomen, and constipation. In her left groin there was a large palpable strangulated hernia, which had not been detected by the practitioner in attendance, simply because it had not been looked for ; and which was discovered only when it was too late. Remember, therefore, that in every case of obstinate costiveness, with signs of inflammation within the abdomen, it is absolutely necessary, for y,our own credit and subsequent comfort, as well as for your patient's safety, to make diligent and thorough inquiry after such hernia as may be recognized externally. But often you find nothing of the sort, and then you are at liberty to prosecute with more energy and decision the purgative plan ,of treatment. You prescribe strong doses of jalap and calomel ; black draughts. The stomach being irritable, you give pills of cathartic extract, and repeat them at short intervals ; or large doses of calomel, ten grains or a scruple, three or four times in succession. You inject stimulating clysters. Then you are driven to croton oil : and at last, in some vague hope of relaxing spasm, to opiates. If symptoms of inflammation spring up, you put fairly in force the remedies of inflammation ; and especially blood-letting. But all is in vain. The medicines are vomited ; or, if retained, they serve but to aug- ment the patient's distress, producing or renewing the pain and the nausea. It is extraordinary how comfortable the patient sometimes becomes upon the intermission of these active attempts. Now and then he suffers tormina, or has fits of retching; but in the intervening periods his sensations and outward condition may be those of perfect health ; only there is no alvine discharge. Now, under these afflicting circumstances, the question will force itself upon you —-how long am I to pursue the purgative system? Common sense, and commorr humanity, answer — you must stop it the instant you are convinced that there is a mechanical obstacle, which cannot be overcome. To persist in the use of drastic purgatives after that conviction, is to inflict wanton and needless torture upon the patient. But how are you to know this ? That is one difficulty. And how are you, beheving that it is so, to satisfy the patient's friends that his disorder is irreme- diable ; and to resist their importunity to try this and that : how persuade them to look passively on, while their relative is slowly perhaps, but surely, perishing? These are great and terrible difficulties. You will be urged by all imaginable suggestions : even the most absurd. Crude mercury may perhaps be one. Pounds of this metal have been swallowed in such cases ; in the hope, I suppose, that it would force a passage by its weight. But the obstacle may be in an ascending coil of intestine. And if not, experience does not teach us to put any faith in this rude mechanical remedy. It has often done mis- chief, and seldom or never done any good. The metal is apt to become oxidized in the body, and then to produce very distressing salivation. This is an evil which I have known to occur, and to trouble the patient greatly, some time after the ineffect- ual exhibition of large doses of calomel. Dashing cold water over the abdomen, and the lower extremities, is another i-nugii expedient, which is sometimes successful in producing evacuations. It was adopted, after various other measures had failed, in the case in which the bowel was tied down by the adherent appendix vermiformis ; and it caused the empiymgot that part of the canal which lay beyond or below the internal hernia. It is plain that this partial success can be of little or no use ; certainly of none that can compensate for the shock and annoyance of the cold affusion. Let me not, however, be misunderstood. I do not say that you are to aDanaon ail 790 MECHAMCAL OCCLUSION OF THE INTESTINAL TUBE. hope when purgatives (and, if need be, blood-letting) have failed, after a fe\v trials, to obtain evacuations from the bowels. Nor even that you are necessarily, for that reason, to give up the use of purgatives. The intestines may be torpid and insen- sible to ordinary stimuli, and really require strong rousing. Dr. Abercrombie men- tions the case of a gentleman whose bowels were locked up by an accumulation, as the result showed, of black hardened feces. The obstruction, which had resisted the most active purgatives, and was accompanied by an evident and painful disten- sion of a part of the abdomen, yielded at once to the repeated application of galva- nism to that part : each application being immediately followed by a copious evacua- tion. Here the flagging muscular action was restored apparently by the galvanic stimulus. Very lately I attended an elderly lady, who from Wednesday morning to the next Monday noon, had had no alvine relief, notwithstanding the employment of the most active cathartics. She suffered frequent paroxysms of pain and vomiting : but the abdomen was scarcely, if at all, distended ; nor was it tender. At length she complained that what she vomited was stercoraceous — to use her own words, "what came upwards ought to have passed the other way." It was a thin, brown-coloured, ill-smelling fluid. Dr. Mayo and Mr. Arnott were now associated with me in this case, and they touched and felt the abdomen as I had previously done. The lady observed that their hands were heavy; and she fancied that the pressure they made had displaced something within. And I believe that it was so: for before our consul- tation in the next room was over, word was brought us that the bowels had acted. She had passed a liquid motion precisely resembling the stuff she had last vomited. The next day, with one of several similar stools, a hard lump was voided, which proved to be a gall-stone, as big as a small walnut. As large quantities of warm water had without difficulty been injected, I infer that the concretion had been impacted high up in the bowel, probably at the valve of the cajcum. Some years previously the lady had suffered severe abdominal pains, which at the time were ascribed to the passage of a biliary calculus through the gall-ducts. In this instance there was no evidence of any strong contractile efforts of the bowel above the place of obstruction. Large enemata — as much as the intestines will patiently receive — gradually and gently introduced, and repeated three or four times a day, may sometimes succeed in breaking down and washing away masses of hardened excrement. And if these enemata are composed of milk or beef-tea, and are suffered to remain as long as they will, they may answer another important purpose; they may contribute sensibly to the nourishment of a patient who cannot retain food in his stomach. They are generally very soothing and comfortable ; allaying tormina, and abating sickness : and they are adapted to every stage and variety of the complaint. There are, however, cases in which we arrive at the melancholy but sure convic- tion that some mechanical impediment has rendered the bowel absolutely and hope- lessly impassable. We fear this when, the constipation being obstinate, we discover a tumour, or hardness, in some part of the belly : or when we receive a history of some former inflammatory attack, since which the bowels have been habitually diffi- cult to regulate. Our fears are strengthened when the patient feels that the injec- tions reach a certain spot, and there always stop ; and that the intestines rumble, and roll, and propel their contents downwards to the same spot, and no further. And this is the distinctive symptom upon which I desire to fix your attention. The abdomen gradually enlarges, especially if the patient is able to retain food. The intestines fill up above the obstacle ; and then throes of pain occur, spasms the suf- ferers usually call them, attended with sickness ; and during these pangs you may feel, and if the abdomen be uncovered, you may see, immense coils of intestine, as big perhaps as one's arm, rise and roll over, like some huge snake, with loud roar- ings and flatulence. When this takes place, the time for giving purgatii-es is cer- tainly over. The distended bowel requires no stimulus ; it acts, and strives with all its power, but strives in vain, to overcome the opposing barrier. If you would con- sult your patient's ease, if you would not embitter and abbreviates his slender rem- nant of life, harass him no further with active remedies. In some cases violent COLIC. 791 .nflammation quickly supervenes, and death arrives in a few days : in others, the patient survives, without any evacuation from his bowels, but with long intervals of ease and comfort, for four, or five, or six weeks. Even a brief respite may be of infinite value ; giving time for the arrival of distant friends — for the settlement of worldly concerns — and for preparation of the spirit against the inevitable hour. It is to these circumstances of irremediable disease that opiates are eminently adapted. Even when the symptoms are less desperate, they are not without their use. I cannot better express what I think upon this point than in the words of the first Heberden, who says : " The probability of advantage from anodynes has deter- mined me to recommend them; and experience has strongly confirmed this judg- ment. Under the protection of an opiate I have successfully given more and stronger purges than v/ould have stayed without its help. The patient's strength has been kept up by some refreshing sleeps : and even in hopeless cases, in which the dying person is harassed by unspeakable inquietude, he may be lulled into some compo- sure ; and without dying at all sooner, may be well enabled to die more easily. Lord Verulam blames physicians for not making the euthanasia a part of their studies : and surely, though the recovery of the patient be the grand aim of their profession, yet, where that cannot be obtained, they should try to disarm death of some of its terror : and if they cannot make him quit his prey, and the life must be lost, they may still prevail to have it taken away in the most merciful manner." 1 have spoken of these cases as being irremediable : but perhaps I have spoken somewhat too absolutely. Life may sometimes be saved by a surgical operation. The gut may be punctured above the seat of obstruction, and suffered to discharge its contents through what is called an artificial amis. This expedient is feasible, however, in those cases 07ily in which the obstacle is situated near the termination of the large intestine ; i. e., in the rectum, or in the lower part of the descending colon : for here only can we ascertain, with any thing like certainty, the exact place of the impediment, and here only may the colon be pierced, from behind, without injury to the peritoneum. Under no other circumstances, in my opinion, would an attempt to reheve the patient, by cutting down upon and opening the bowel, be justi- fiable. An artificial outlet in the loin would probably be less disgusting to the pa- tient, and less offensive to others, than if it were in front of the body. I am not aware that the operation has ever been done in this country. It has been practised successfully in France. The mode of performing it I am not competent to teach you. In an appropriate case I should think it right to mention, though I should be slow to recommend, this anceps remedium. The risk of failure, and the penalty of success, should both be set fairly before the patient. The choice between certain death, on the one hand, and the chance of living with a very loathsome bodily infirmity, on the other, must be made by himself. For further information upon this subject, I would refer you to an interesting essay, by Mr. Erichsen, published in the 28th volume of the Medical Gazette. It remains that I should say something more respecting colic: which may exist independently of enteritis, and of mechanical occlusion of the bowel ; although the three are very often combined and intermixed in the course of the same disease. In colic there is pain in the abdomen, constipation of the bowels, vomiting often : and these are symptoms which occur also in enteritis. The pain is a twisting or wringing pain generally, round the navel ; and such is the character of the exacer- bations of pain experienced when the bowels are inflamed. These are the points of resemblance between the two maladies : and it is of much importance, as 1 told you before, to observe their differences ; and to note the marks by which the one may be distinguished from the other. It is, then, an essential difference that enteritis is attended with fever, and with tenderness of the belly. The pain is increased by all kinds and every degree of pressure ; and the patient, fixed in the supine position, breathes with the intercostal muscles only, and carefully avoids any movement whicli would call the abdominal muscles into action, and so "^rimpress the inflamed bowel. In colic, on the other hand, the circulation is tranquil ; there Js no fever ; and the pain is even mitigated by pressure. The patient will lie on his belly lor ease : nay, 792 COLICA PICTONUM he will press it, with the whole weight of his body, across the back of a chair, and obtain comfort by that manoeuvre. During the paroxysms the pain is often most violent : what the old writers call dolor atrox — atrocious pain : but there are inter- vals of complete ease. Even when the pain is worst, the patient tosses and shifts from one posture to another in search of relief: and he does not wear that anxious and apprehensive aspect which we see in those who are labouring under enteritis. The pain arises, I imagine, from the distension of the bowel, here and there, by gas ; or, it may be, from spasm ; or from both these states at once. At any rate, it is often associated with audible flatulence, and with evident outward spasm. The abdomen is hard, and drawn spasmodically inwards towards the vertebral column ; and its muscles are partially and strongly contracted, gathered up into lumps and knots. None of these circumstances belong to enteritis. However, there is good reason for believing that, even in mere colic, the pain may sometimes be augmented by pressure. When a portion of the gut has become rapidly distended, considerable uneasiness may result from its forcible compression; although, as Dr. Abercrombie states, the kind of pain can generally, by attention, be distinguished from the sensitive tenderness of an inflamed peritoneum. Luckily, if such pain on pressure should lead us to mistake a case of pure colic for a case of enteritis, the error is on the safe side : and we must always bear in mind the tendency remarked in colic, when the complaint is neglected, or badly treated, to run into actual inflammation. In fact, as any obstacle to the passage of the ali- mentary matters through the bowels may give rise to colic, colic is sometimes merely the first step towards acute inflammation arising out of a continuance of the obstruc- tion. And having told you that colic may be thus produced, I have at once intro- duced you to a large class of its causes which have already been spoken of in the present lecture as frequent causes of inflammation also. But colic, like inflammation of the bowels, sometimes arites without any appa- rent or detectable obstruction, of a mechanical kind, to the free transit of the contents of the alimentary tube. And there is one particular form of colic that requires a separate notice. The colica Pictonum — so called from its great frequency, hereto- fore, among the Pictones, or inhabitants of Poictou — is produced by the slow intro- duction of the poison of lead into the system.. Now, the colic which has this origin is not to be distinguished, in its ordinary symptoms, from any other kind of colic. But the abdominal pain is usually, in such cases, a part only of more general disease. It has received, in different places, a variety of names — colica Pictonum, the painter's colic, the Devonshire colic, the bfUain of Derbyshire, the dry belly-ache of the West Indies. In all cases it acknow- ledges the same cause — the gradual entrance of lead into the body. In this country, we see the disease more often in painters than in any other per- sons. They use, as you know, white lead in the preparation of their colours ; and they are perfectly familiar with this terrible cohc. We see it, also, in all workmen whose occupations bring them habitually into contact with preparations of lead. No doubt there are very great differences in the susceptibility of this effect of the poison of lead. Persons have been known to suffer colica Pictonum, in consequence of their sleeping for a night or two in a recently painted room. On the other hand, I have myself seen a patient who became affected with the disease, for the first time, after working with white lead for nineteen years. Generally the first attacks of colic are well recovered from. The obstinate constipation of the bowels is at length over- come ; the patient obtains ease, and forthwith recurs to his previous habits ; and after a period, which varies in different individuals, he is again laid up with the cohc. Even the primary attacks are usually attended with pains in the head, and in the limbs ; sometimes with cramps ; sometimes even with epilepsy and coma. At length, in one of these attacks of colic, or after one of them, when the violence of :he pain and the costiveness have yielded to treatment, the patient finds that he has lost the full power of using one or both of his hands. The wrists, as the patients express it, drop. You see at once what is the matter, by the characteristic state of the arms and hands. The extensor muscles of the hands and fingers are palsied ; so that, when the arms are stretched out, the hands hang dangling down by their COLICA PICTONUM. 793 own weight, and the patient is unable, by any effort of his will, to raise them. The palsy is local ; it does not proceed from any diseased condition of the nervous cen- tres. The affected muscles waste, and the atrophy is very remarkably seen in the bundle of muscles composing the ball of the thumb. Even from this condition, the patients often are capable of complete recovery. But if they persist in following their former calling — or if, without knowing it, they continue to be habitually exposed to the exciting cause of the disease — they become miserable cripples, fall into a state of general cachexia, and sink at length under some visceral disease. The poison accumulates in the body, and saps the powers of life. Francis Citois, a native of Poictou, who published an excellent and one of the earliest accounts of the disease, in the year 1617, has drawn the follovving graphic picture of its effects. Its cause was not at that time suspected. Speaking of the wretched sufferers, he says, "Per vicos, veluti larvos, aul arte progredientes statuse, pallidi, squalidi, macilenti conspici- untur; manibus incurvis, et suo pondere pendulis, nee nisi arte ad os et coeteras supernas partes sublatis, et pedibus non suis sed crurum musculis, ad ridiculum ni miserandum incassum compositis, voce clangosa et strepera." The course of the disease is usually such as I have just described it. The colic happens first, perhaps several times, and then arrives the palsy. But in a few instances I have known this order reversed. The wrists have dropped, when there tiad been no preceding colic. The great cause of this fearful malady Avas first made out by our distinguished countryman. Sir George Baker. He set on foot an inquiry into the origin of what was called the Devonshire colic, so common was it in that county. He found, first, that it occurred chiefly in persons who drank the cider manufactured there ; and, by degrees, he traced the source of the malady to the admixture of lead with the cider ; cither designedly, for the purpose of sweetening it, or by the inadvertent employment of lead in the construction of the cider-mills and vats. It was under circumstances of the same kind that the colic of Poictou originated. Preparations of lead were used — not fraudulently, but openly and honestly — to prevent the wines of the coun- try from turning sour; the injurious influence of lead upon the human body not having then been ascertained. So, also, equally convincing proofs of the adultera- tion of rum by means of lead, giving rise to frequent attacks of dry belly-ache, in the West Indies, are given by Dr. John Hunter, in the Medical Transactions. I invite your attention to his papers, and to Sir George Baker's, on this subject. They afford a capital specimen of medical research and reasoning. Various causes, as you may suppose, had been assigned for this disorder. These are one by one investi- gated and set aside, until, by this method of exclusion, the real source of all the mis- chief is detected. Sir George Baker's papers contain a great deal of curious and useful information in respect to the various modes in which this poison of lead may find its way, without being suspected, into the animal economy. The subject is one of vast importance in its relation to medical police ; but my limits will not allow me to follow it beyond the point where it ceases to be directly connected with the prac- tice of physic. Colica Pictonum is seldom fatal as colic, or during the persistence of the abdomi- nal symptoms ; yet instances enough of death occurring while the colic was present, but from other accidental causes, have now been collected, to enable us to say, that no appearances have been met with in the intestinal canal, calculated to explain the pain or the constipation. Andral relates five cases, in which the body was carefully examined after death preceded by the painter's colic. He found neither inflamma- tion, nor any remaining trace of spasm. The intestines were neither dilated no' contracted, but of their natural texture and appearance. Merat, who has written t. good treatise on this form of colic, gives the dissections in four fatal cases : fatal, as I mentioned that they sometimes are, by the supervention of coma. There was no discoverable mark of disease ; the alimentary canal was -empty, and the large bowels contracted ; as they were also found to be in rabbits which had died of lead colic. For animals are susceptible of the disease, and it ma}'' be produced in them by the slow impresrnation of their bodies with the specific poison. Dogs, cats and rats, thai inhabit houses and manufactories wherein lead is much used or prepared, are known 3r 7D4 COLICA PICTONUM. to be attacked both with colic and with palsy. With respect to the contraction of tiie large intestines in these cases, we must not be too ready to attribute it to spasm ; for the bowel, when empty, is apt to be contracted. When the palsy has been of any continuance, the affected muscles not only shrink and waste, but undergo a structural change, which is obvious to the sight. They become pale, almost white, dry. John Hunter examined the muscles of the hand and arm of a house-painter, who died, while thus paralytic, in St. George's Hospital. He found them of a cream colour, and opaque, instead of being of a purplish red, and semi-transparent. And, since his time, lead has been detected in the palsied muscles, and in the brain, by chemical analysis. It is doubtless conveyed by the blood to all parts of the body. Why it fastens solely or chiefly on particular mus- cles or particular nerves, nobody knows. The pain it occasions, whether in the abdomen or in the hmbs, is generally thought to be neuralgic. It is one of the poi- sons that do not appear to find a ready exit from the body. Very recently, a most curious symptom, pathognomonic, I believe, of the presence of lead in the system, has been pointed out by Dr. Burton ; and now that it has been pointed out, one can hardly understand how it escaped discovery so long. It is a blue or purplish line running along the edges of the gums, just where they meet the teeth. Dr. Burton first noticed this six years ago, but wisely refrained from making his observations public until he had had time and opportunity enough to satisfy his mind that he was not mistaken. A paper of his on the subject was read at the Medical and Chirur- gical Society last January (1840). I cannot resist the temptation to read to you the notes of a case which has subsequently occurred to me in the hospital. Mary Anne Davis, a middle-aged woman, presented herself with dropped wrists. It was an exquisite example of palsy of the extensor muscles of the hands and fingers. She could raise her arms, but her hands hung down like the talons of a bird, or like the fore paws of an erect kangaroo. This began nine weeks before. She complained of pain, beginning under the nails, stretching up the backs of her hands, and reach- ing sometimes to the elbows. The bottoms of her feet had also been tender, and at night were burning hot. Seeing the dropped wrists, we thought immediately of the poison of lead. But the patient was a female. We do not often see these effects of that poison in women ; for obvious reasons. At first we could get no clue to the mode in which lead could have found its way into her system. Her husband was a broker. She had not been living in a newly-painted house : and had (she said) no concern with lead in any way. Lead often creeps in, however, through undetected channels, and I could not help suspecting it here. Mr. Pyper, my clinical assistant, soon elicited another part of her history, which added to our suspicions ; namely, that before the palsy occurred, she had had pains in the abdomen, and costive bowels, for five days toge- ther. Nay, she had a recurrence of colic after her admission. This was a strongly corroborating fact; but what clenched the proof was the discovery of a decided blue rim along the edges of nearly ail her gums. This conclusive evidence led to further cross-examination ; and at last it came out that some of her sons (she had seven) had occupied their leisure time in the preceding summer with making bird-cages, and painting them green, in the one room in which she habitually lived. The case alto- gether was a very neat one. Mr. Tomes pointed out to me some interesting circumstances, which led him, at one time, to think it probable that the colour might be produced by some chemical action between the tartar that forms on the teeth, where they meet the gums, and the lead which pervades the system. This woman's teeth, like those of man)^ in her rank of life, were loaded with tartar. In one place was visible a stump, level with the gum, and surrounded by a ring of tartar; and there was also a correspond- ing border of blue. In other places there were gaps, where teeth once were ; here there was, of course, no tartar; and here there was no blue line on the edge of the gum The blueness may however appear when there is no tartar at all. I do not know exactly m what manner the chemical union arises, but the colour depends, I beheve, upon a sulphuret of lead, formed somehow by the action of sulphuretted hydrogen upon the metal. It is curious that the edge of the gum should always be COLICA PICTONUM. 795 the part thus marked ; that very part which first exhibits the influence of another metal, mercury, when ptyalism is about to ensue. This discovery of Dr. Burton's is not a mere piece of curiosity, but is likely to be of use in various ways. In the first place, it may settle the nature and cause of many doubtful cases; as it did, indeed, of the one just narrated. The poison of lead produces pains which resemble, und no doubt are sometimes mistaken for, the pains of rheumatism; it has other obscure consequences too: and an inspection of the gums may often greatly elucidate such cases. Dr. Burton finds that small quantities of lead given as a medicine will produce the phenomenon. In two in- stances it occurred within two days. One of these patieiid^iad taken fifteen grains of the acetate of lead in that time ; the other twenty-four grains. A correspondent of his produced the blue rim in twenty-four hours ; viz., by four doses, of five grains each, exhibited every six hours. He finds too that the line remains distinct after death ; even more so than during life. It may atford valuable inibrraution therefore to the medical jurist in cases of suspected poisoning with the salts of lead. It is, I say, an early consequence of the absorption of lead. It will teach us, as the mercu- rial affection of the gums teaches us, that the medicine is pervading the system ; and admonish us to look out for, and guard against, colic. It may apprise workers in lead that their caution has been insufficient ; that the poison has entered ; and that they are in peril of belly-aches and palsy. It is a capital diagnostic sign also be- tween colic so arising, and colic from other causes ; and between cohca Pictonum, and the pain of inflammation of the bowels. [The symptoms of colica pictonum, or lead colic, are in some respects different from those of ordinary colic. There is usually, at first, a loss of appetite, ^vith some degree, more or less in different cases, of nausea, and very commonly an increased discharge of saliva. The patient's sleep is disturbed, or more frequently, there is an inability to sleep ; according to M. Ranque, of Orleans, he exhibits various other symptoms of a disordered condition of the nervous system. The attack of colic usually commences with vomiting ; the matter dis- charged being, at first, whatever has been taken into the stomach mixed with bile and the gastric secretions, very generally changed from their healthy condition; if the vomiting con- tinue, these latter are alone discharged. Pain of the abdomen is next complained of; it is most severe about the navel, the epigastrium, the hypochondria, the loins, and above the crest of the ileum. The pain, in general, commences at the hypogastric region, or, as a cramp, at the pit of the stomach, and from thence extends, in a short time, over the rest of the abdo- men. The pain is at first paroxysmal, with intervals of ease ; these intervals being the longest at the commencement of the attack. More commonly there occur remissions ratlier than intermissions of the pain; and it is remarked, that both the remissions and exacerba- tions are much longer than those of ordinary colic. As the disease advances the pain is almost constant, but is usually most severe at night. It is not increased by pressure; on the contrary, pressure very generally, but not invariably, affords relief, provided it be not made upon the epigastrium ; according to Merat, patients have been known to bear, with relief JD tlie paroxysms, the weiglit of two or tliree persons standing on the belly. The abdomen is almost invariably hard and flat from a contraction of its niuscles ; the navel is sometimes drawn in so as almost to approach the spine; in a kw instances there exists some fiUlness of the abdomen, and occasionally it has an irregular, knotty feel. There generally occur, within the first day or two, sometimes within the first few hours of the attack, headache, and a dull, anxious, or depressed expression of the countenance ; to these symptoms are soon added, pains of the limbs, especially of the inside of the thighs, calves of the legs, ankles, and soles of the feet; these pains are worst at night; they are often accompanied with cramps, and according to Tanquerel, are relieved by pressure. The disease is seldom attended with febrile excitement. The skin is of a dull, dirty cadaverous appearance ; it is frequently hot, and almost invariably bedewed with irregular, clammy, and often cold, perspiration. The pulse, according to SIM. Ranque and Merat, is rarely accelerated, but often below G0° in a minute ; others, however, notice a considerable acceleration of the pulse, which we have remarked in many cases, the pulse being at the same time hard, and communicating to the finger a pecu- liar thrill. Obstinate constipation of the bowels is an almost invariable symptom; although it does not always occur at the very commencement of the attack ; in a few instances, it is said that the attack has been attended with diarrhcea; such an occurrence, howe' er, we have never observed. On the contrary, in all the cases that have fallen under our -otice, either no discharge has taken place from the bowels, or a scanty stool has occurred composed of a few lumps of dry, hardened feces, passed with much straining and pain. The urine, though generally natural in appearance, is often diminished in quantity. From an attack of colica pictonum, particularly a first attack, the patient may, under a 796 COLICA PICTONUM. judicious and timely treatment, recover perfectly ; and with a careful avoidance of any oi its exciting causes, and of the poison of lead, he may remain ever after free from a recur rence of the disease. When the disease, however, is neglected, or badly managed, or the patient is constantly or repeatedly exposed to the influence of lead, he becomes affected either with a peculiar form of partial palsy, which is well described by Dr. Watson in the text; or, instead of this gradual loss of voluntary motion in the muscles of the extremities, there occur another set of symptoms, which very generally terzninate speedily in death. The patient after a few days becomes affected with giddiness, great debility, torpor, and sometimes deli- rium : as the torpor advances, the pains in the abdomen and extremities abate ; at length convulsions, and a comatose condition ensue, from which very few recover. Cases are recorded by Louis and others, in which death suddenly occurred during the first stage of the disease, without the occurrence of any symptoms that would cause such a result to be sus- pected. Drs. Elliotson and Copland each relate a case in which death was caused by per- foration of the stomach. To a paralytic affection of the muscles of the extremities, as a very common eftect of repeated attacks of colica pictonum, we have already referred ; and two cases are related by Dr. Alderson, of Hull, England, in which the disease was attended with paralysis of the nerves of vision ; Tanquerel states that this is not uncommon in Paris, the paralysis being attended with dilated and immovable pupils ; he met, also, with one in- stance in which deafness was present, no doubt from paralysis of the auditory nerve. — C ] In the treatment of colic — and especially of the lead colic — the great indication is to get the bowels to act. If the pain of the belly be increased on pressure, if the pulse be at all accelerated, if the face be flushed, and there be the shghtest approach to fever, it will be right to take blood from the arm. It is a measure of safety as regards the possible existence of inflammation : and if there be no inflammation pre- sent or impending, it will tend to remove the spasmodic state of the muscles which goes along with, and perhaps chiefly constitutes, the disease. External warmth should also be applied ; dihgent friction, with some stimulating liniment ; or, what is much better, a mustard poultice, or a turpentine stupe. My colleague. Dr. Wil- son, has been very successful in relieving these patients, by putting them into a hot bath, and having a large quantity of the water in which they are immersed, thrown gradually into their bowels by means of a proper syringe. The bath presently be- comes polluted, to the great satisfaction and refreshment of the patient. It will generally be expedient to give a full dose of calomel and opium ; ten grains of the one with two of the other. Sometimes the effect of the opiate is to suffer the bowels to empty themselves ; showing that the previous difficulty was probably spasmodic. Usually the calomel and opium will soothe the vomiting, the restlessness and the pain ; and then a full dose of neutral salts, or of castor oil ; or (if these do not suc- ceed) of the last named remedy, castor oil, quickened by one or two drops of the oil of croton, will produce free evacuations from the bowels; and the patient soon re- turns to his ordinary state of health. It is sometimes necessary to repeat this prac- tice, this alternation of purgatives and anodynes: but when once the bowels have been freely moved, the disease, in general, becomes very tractable. At La Charite, in Paris, there is what is called a specific mode of treatment fol- lowed. It is complicated and rough, bu't not a whit more successful than the simpler plan which is universally adopted in this country. You may see it described, if you are curious on the subject, in most of the French books. I think it is given in detail in Ratier's Formulary of Hospital Practice. Some have recommended salivation for the cure of the painter's colic, on the principle, I conjecture, of driving out one metallic poison by another. But the two may combine, for aught I know, to plague the patient. The practice is quite unne- cessary. You will be consulted about the palsy which arises from lead, and especially to remedy the dropped wrists, which render the patient incapable of earning his liveli- hood. Now in the early stages of the palsy, and in its primary attacks, you may often succeed in effecting a cure. Electricity has long been thought useful, apphed in the way of sparks at first, and of shght shocks afterwards, along the muscular parts of the extensors of the fingers. It accelerates the recovery to give the hand and fingers the mechanical support of a splint, made for that express purpose, and so contrived that the hand and fingers are kept extended through the greater part of the day. Patients labouring under this kind of palsy resort to the Bath waters for COLICA PICTONUM. 797 a cure : and I learn from a gentleman who once held the office of house-surgeon to the hospital there, that the physicians have much more faith in the use of the baths, with shampooing, and in splints and blisters to the palsied muscles, than in electricity. The warm douche is a promising expedient : the electro-magnetic apparatus, per- haps, still more so. According to Andral and others, who have had more experience of that drug than I have, there is no form of palsy so Hkely to be benefited by strychnine as this which proceeds from the poison of lead. I should recommend you to try the safer methods of binding the hand to a splint, and stimulating the muscles by friction, shampooing, or electricity, before you resort to that active poison. It is observable of this disease, as of many, and, indeed, of most others, except certain contagious febrile diseases, that when once it has occurred, it is much more liable to occur again, upon a repetition of the exciting cause, than before. It is of very great moment, therefore, that they who are necessarily exposed to the poison of lead — as painters, plumbers, printers (who handle leaden types), colour-grinders, potters, and glass-blowers (who use the oxide of lead in their respective manufacto- ries), shot-makers, workers in lead mines, and so on — it is of great importance that these persons should be made aware of the means which are best adapted for their protection against the injurious agency of the poison : and we ought to be able to give them advice in that matter. The rules for their guidance are short and simple ; and, if carefully observed, I believe they will generally prove successful. They resolve themselves into cautions against the admission of the metal or its compounds into the body through any channel. 1. To prevent its introduction through the skin minute attention to cleanliness is necessary. The face and hands should be washed, the mouth rinsed, and the hair combed, several times in the day ; and bathing and ablution of the whole body should be frequently performed : also, the working-clothes should not be made of woolen, but of strong compact linen ; and they should be washed once or twice a week at least ; and they should be worn as little as possible out of the workshop : and some light impervious cap mi^ht protect the head while the person is at work. 2. Care should be taken that none of the poison be admitted into the system with the food. The workmen, therefore, should not take their meals in the workroom, and should be scrupulous in cleansing their hands and lips before eating. 3. The entrance of the poison into the air-passages during respiration should be guarded against as much as possible. Masks have been recommended for this pur- pose : none, probably, would be more convenient or more effectual, than Mr. Jeffrey's orinasal respirator. There is a notion prevalent in some places, which apparently has some founda- tion, that the free use of fat, and of oily substances, as food, is a preservative against the colic. A physician, near Breda, informed Sir George Baker that the village in which he lived contained a great number of potters, among whom he did not witness a single case of lead colic in the course of 'fifteen years; and he attributed their immunity to their having lived very much on butter and bacon, and other fat kinds of food. De Haen also was told by a physician, the proprietor of a lead mine in Styria, that the labourers there were once very subject to colic and palsy ; but that after they were exhorted by a quack doctor to eat a good deal of fat, especially at breakfast, they were exempt from these disorders for three years. This is a kind of prophylaxis that is very easily adopted. More recently Liebig has asserted that " the disease called painter's colic is un- known in all manufactories of white lead in which the workmen are accustomed to take, as a preservative, sulphuric acid lemonade, a solution of sugar rendered acid by sulphuric acid." If this be so, the lemonade must protect the system by converting any other salt of lead, which might find entrance, into an insoluble sulphate : solubility being requisite to give efficacy to any poisonous substance. Mr. Benson, the manager of the British white-lead works, in Birmingham, states (in the Lancet) that he has tried this method of prevention. Under his direction sulphuric acid was first added to the treacle-beer, used as a beverage by the work- 3r2 798 DIARRHCEA. men, in the summer of 1841. Lead colic, which had prevailed before " to a dis tressmg extent," soon began to diminish in frequency : and from October in the same year, up to the date of Mr. Benson's communication in December, 1842 — a period of fifteen month? — not a single instance of the disorder had occurred amongst them. This is very encouraging. LECTURE LXXII. Diarrhoea. Sporadic Cholera, Epidemic Cholera Tke morbid fluxes which proceed from the long tract of mucous membrane that lies between the stomach and the anus are many in number: and they vary much both in kind and in cause. Hemorrhages are not uncommon. I have already de- scribed the disease called melsena, which is characterized by the discharge of black semifluid matters, resembling tar, from the bowels, and in most instances from the stomach also by vomiting. The matters vomited, and the matters passed by stools, are composed principally of blood, Avhich has been rendered black, and otherwise modified in appearance, during its progress onwards in the one direction and in the other. Again, hemorrhage from the bowels is apt to occur in continued fever ; as I shall show j'ou when we come to that disease. Hemorrhage takes place also from the rectum in hsemorrhois, or bleeding piles : a malady that falls chiefly to the care of the surgeon. Blood comes awa}^, too, mixed with a greater or less quantity of mucus, in dysentery. The remaining forms of profluvia from the intestinal canal I shall proceed to con- sider seriatim ; at least the most important of them. There are several very different affections classed together under the head of diarrhcea: by which term is usually signified the occurrence of frequent, loose or liquid alvine evacuations. Thus diarrhcea is a very common sj-mptom of pulmo- nary phthisis ; and this form of the disorder has been already mentioned. It is very oiten met with also in continued fever, and during the decline of the febrile exanthe- mata, of which I have yet to speak. But diarrhcea is not unfrequently the main symptom of the illness under which the patient labours; and constitutes, at any rate the chief object of our treatment. I shall touch briefly on some of its varieties. In the first place, there is that common form of the complaint which proceeds from over-repletion of the stomach ; or from the ingestion of food that is not whole- some : food that disagrees (as the phrase is) with the patient's stomach and bowels at that particular time. We may call it, with Cullen, by way of distinction, diarrhoea crapnlosa: in which feces are discharged in a more liquid state, and more copiously, and more often, than is natural. These cases are in truth slight cases of irritant poisoning. The ingesta irritate the mucous surface, and probably the muscular coat also ; the secretions of the inner membrane are poured forth in unusual abundance, and the peristaltic motions of the intestines become more strong and active ; the ob- ject of these changes being that of getting rid of the offending substances: a salutary and conservative effort, which we assist and imitate in our treatment of this form of diarrhoea. The symptoms by which this species of diarrhoea is marked, must be well known to us all. There are often nausea; flatulence; griping pains in the bowels, suc- ceeded by stools of unnatural appearance and odour, and of fluid or watery consist- ence. There are often, also, a furred tongue and a foul breath : but the disorder is attended with little or no fever ; the pulse remains of the ordinary frequency ; and the temperature of the body does not rise. There are certain things which, more than others, tend, when taken into the sto- mach, to cause this crapulous diarrhoea : and there are certain circumstances which increase the disposition to be affected by the ordinary exciting causes. DIARRHCEA. 799 We frequently see this disorder supervene upon a debauch, in which case the mixture of various articles of food, and of drink, each of which in itself might have been perfectly innocent — and the actual quantify of the mixed ingesta — have occa- sioned the irritation and disturbance, Byjt Avhere there has been no intemperance in eating or drinking, some kinds of food are more likely than others, cxteris paribus, to provoke diarrhoea. I do not speak of idiosyncrasies, which show the truth of the old proverb, that what is one man's meat is another man's poison, and which cannot be reckoned upon beforehand ; but I refer to the average of systems and stomachs. And among these indigestible and irritating substances we may place raw vege- tables of many kmds ; such as cucumbers and salads, sundry kinds of fruit, espe- cially if they be hard, immature and acid ; plums, melons, pine-apples, nuts, and so forth. Mushrooms may be added to the hst, even when they are cooked. Putrid food, or food which, in the more refined phraseology of gastronomers, is termed high, has the same effect upon some persons : and so, in a particular manner, have some kinds oafish ; shell-fish, crabs and muscles, for instance, in this country ; and in other countries, in the West Indies, there are several species of fish which are actually poisonous, and cannot be safely eaten at all. And similar disorder is fre- quently produced in children by any sort of food, other than the natural sustenance furnished by the mother. The new kind of nutriment disagrees with them : and the very same thing is apt to occur in adult persons. An article of diet which is per- fectly wholesome and digestible, and which the stomach bears well after a little habit, will sometimes cause griping and purging, when it is taken for the first time. It is upon this principle that the diarrhoea to which Englishmen are subject upon first visiting the towns upon the continent, is to be explained. I do not know that it is so, but I think it very likely that Frenchmen, and Germans, and Italians, suffer in the same way when they first come to this country, and adopt our habits and regimen. Another curious exciting cause is to be found in certain mental emotions, and especially the depressing passions; grief, and above all, fear. A sudden panic will operate on the bowels of some persons as surely as a black dose, and much more speedily. Among the circumstances which predispose most persons to this kind of malady, we may particularly specify season — the hot weather of summer and au- tumn. And it is probably consistent with the experience of most of you, that the atmosphere of the dissecting-room has a similar tendency. Now this diarrhoea, from occasional irritation, produced by the presence of sub- stances that offend the stomach or bowels, will generally cease of itself. The purging is the natural way of getting rid of the irritant cause. We may favour the recovery by diluent drinks, and by making the patient abstain from all further use of food which is not perfectly easy of digestion ; and we may often accelerate the recovery by sweeping out the alimentary canal by some safe purgative, and then soothing it by an opiate. Or we may give the aperient and the anodyne together, and the one will not interfere with the operation of the other. A table-spoonful of castor-oil, wAh. six or eight minims of laudanum dropped upon it : or from fifteen grains to a scruple of powdered rhubarb, with half as much of the pulvis cretse cumpositus cum opio. By some such medication as this, emptying the bowels, and quieting them, the cure is generally accomplished with ease, and speedily: tutd, cito, etjucunde. We sometimes, however, meet with cases in which diarrhoea runs on ; the stooL< being composed of fecal matter in an unnaturally fluid state ; and the precise condi tion on which this disposition to an over-loose slate of the bowels depends, escaping detection. If the disorder be slight, it will often yield to the astringent and bitter medicines. The infusion of cusparia, with the tincture of cinnamon, supplies a con- venient formula. If it be more severe, or obstinate, we have recourse to a chalk mixture, which neutralizes acidity ; com-bined with catechu, which is a direct astrin- gent of the tissues ; and with laudanum, which calms irritation. And in extreme cases the sulphate of copper has been found to have a powerful efiect in restraining the flux. It is apt to gripe, and should be combined therefore with opium. A quar ter of a grain of each, in a pill, given three or four times a day, I have frequently found successful, when previous attempts to remove the diarrhoea had failed. 800 DIARRHOEA. [A much more effectual remedy is the acetate of lead, combined with opium and ipecacu- anha ; one grain of the first, from a fourth to the half of a grain of the second, and from half a grain to a grain of the latter, combined in the form of a pill, or in a powder, mixed with a little simple syrup, may be given to an adult, and repeated every three or four hours according to circumstances. Diarrhrea in a chronic form is that which the practitioner will be the most frequently called upon to treat in the adult; and it, in general, requires for its complete removal a cau- tious and judicious course of treatment persevered in for a length of time. The slightest deviation from the strict diet and regimen required in each case, will often very considerably protract the cure ; while a too early abandonment of the appropriate remedies ■will fre quently be quickly followed by a return of all the worst symptoms of the disease. In chronic diarrhoea there exists a morbid excitability of the intestinal canal, so that almost everything taken into the stomach, as food or drink, brings on quickly repeated discharges by stool consisting of the ordinary secretions of the digestive tube, more or less changed in cha- racter, mixed with portions of half digested aliment ; and the looseness continues, often un- attended with griping, or any other uneasy sensation save those connected with the debility and emaciation produced by the interruption to the digestive and nutritive functions generally, which the rapid passage of the aliment through the bowels occasions. There is no doubt, that frequently the morbid excitability of the digestive canal is due to a chronic inflamma- tion, often follicular, and attended with ulceration of some portion of its mucous membrane; when this is the case, we have repeated discharges by stool without apparently any exciting cause other than the morbid secretions of the liver, pancreas, or of the stomach and intes- tines themselves. The discharges are, in general, dark-coloured and offensive, very fluid, and small in quantity, and are often preceded and accompanied by griping pains more or less severe. There is, very commonly, some degree of nausea, and occasionally vomiting, the appetite for food is generally destroyed, though in many cases it continues unimpaired. The patient becomes more and more emaciated and debilitated ; his skin assumes a dirty sallow hue and a dry harsh feel; the palms of the hands become hot and dry; the countenance has, in many cases, a dull, desponding expression; the features acquire considerable sharpness, and the eyes become sunken and surrounded by a broad leaden-coloured ring. The abdo- n^n is frequently flaccid, and exhibits no tenderness upon moderate pressure; occasionally, however, it becomes swollen and tympanitic, and is now and then decitledly tender to the touch. We have known in cases of chronic diarrhcea, an effusion of serum to occur within the peritoneal cavity, and to produce a very decided intumescence of the abdomen. In pro- tracted cases, the body exhales a peculiar sickly odour, the tongue becomes of a dark maho- gany hue, and often, together with the parietes of the mouth, is covered with aphthas. The pulse is usually small and feeble, often quick and frequent. Febrile symptoms are not gene rally present; in many cases, however, there is observed some degree of febrile excitement towards evening — very protracted cases we have repeatedly known to be accompanied with well-marked hectic symptoms — more or less pufliness of the face, and cedematous swelling of the extremities, very commonly occur in the course of the disease. The discharges by 'jtool, while they are always fluid and vitiated, exhibit considerable variety in their appear- ance ; most gencraUy they are dark-coloured, and exhale a rancid or fetid odour; occasion- ally, however, they have a jelly-like consistence, and very little smell; at other times they consist of a small quantity of a dirty yellow fluid, and when they contain solid matter this will generally be found to consist of portions of half-digested aliment. All these changes in the character of the discharges may present themselves in the same case, and often within a very short period. In protracted cases, the discharges would appear to acquire an acrid property, pro- ducing an erythematous inflammation of the verge of the anus, and often of the nates. The frequency of the stools varies very much in different cases, and at different periods in the same case. Occasionally, the diarrhoea takes place only after the ingestion of food or drinks, or of particular kinds of food, and the discharges from the bowels continue to recur at short intervals until the offending matters are got rid of; in many cases, repeated stools occur in the course of the day, whether food is taken or not, and are suspended during the night ; in other instances the evacuations from the bowels often cease for a day, or even longer, and then return, and for a short period with increased frequency. The duration of chronic diarrhoea is very various ; unless arrested by a proper course of treatment — its spontaneous cessation being a thing of very rare occurrence — it will run on for weeks, often for months, and the patient finally sinks from extreme exhaustion. Occa- sionally perforation of the intestines occurs from ulceration or softening, and the fatal event is preceded by peritonitis. Tne causes of chronic diarrhoea are the same as those of the acute or simple form of the disease ; frequent attacks, within a short period, of an ordinary bowel complaint, will very commonly induce a chronic affection. — Improper articles of diet, and acescent drinks, habit ually mdulged in ; exposure to a cold, and, at the same time, humid atmosphere ; the abuse *f purgatives, and intemperate habits generally, are among the most common causes of DIARRHCEA. 801 chronic diarrhoea. It is an affection much more readily induced in those of a lax, and feeble, excitable and broken-down constitution, than in tho.se of an opposite condition. The state of the intestinal tube in those who have fallen victims to the disease is very various. In some cases, the mucous coat, particularly of the large intestines, is somewhai thickened, spongy, and pale — in others its anatomical characters are entirely changed, large portions of it presenting a smooth, glassy, mottled appearance, as though its surface had been covered with a thin coating of dirty varnish. Occasionally large patches of the mucous mem- brane of the colon or rectum are of a dark mahogany or of a slate colour — • the traces of follicular inflammation, or of ulcerations, more or less extensive, are not unfrequently met with, especially in the ileum and colon. Dr. Stokes notices a form of chronic diarrhcBa as of common occurrence, dependent upon ulcers situated close to the verge of the anus ; these ulcers occur chiefly in persons of a broken-down constitution, and those who have taken a great deal of mercury ; we have repeatedly observed them, also, in individuals, who have been in the habit of using almost daily the various pills composed chiefly of aloes, soap, and Bcamniony, or gamboge, vast quantities of which are vended in the United States as a popu- lar remedy for almost every ailment. The ulcers situated just within the anus produce irri- tation in the colon, tenesmus, griping, frequent discharges by stool, and most commonly dur- ing the straining a little blood is passed. The presence of the ulcers may be at once detected by an examination of the rectum ; which examination, as Dr. Stokes very correctly remarks, should invariably be made in all cases where the diarrhoea has been of long standing, and has resisted a great variety of treatment ; where it is attended with tenesmus, and a desire of sitting on the night chair after a stool has been passed ; and, finally, where the patient's health does not appear to be so much affected as it naturally would be from long-continued disease of a large portion of the great intestine. In the treatment of chronic diarrhoea our leading indications are, to control the morbid irritability or excitability of the intestinal mucous membrane, and restore it as quickly as possible to its healthy condition and functions. To effect these objects is not always, how- ever, a very easy task, and always demands considerable judgment on the part of the prac- titioner, and considerable patience, and an implicit obedience on the part of the patient to the medicinal direc^tions and dietetic rules laid down. The first and all-important considera- tion is that of diet — so that, while the patient is supplied with aliment caleulateii for his support, as little irritation as possible of the intestines shall be excited by it. The food taken by an individual labouring under chronic diarrhcEa should be easy of digestion, of the mildest quality, and such as leaves, after undergoing digestion, but a small quantity of excrementi- tious matter ; and even of such food but a small portion shoiHd be taken at a time. Rice is probably the best article of diet in the generality of cases of chronic diarrhoea; when well boiled, with the addition of a little salt, while it is sufficiently nourishing it is extremely mild and unirritating, by no means difficult of digestion, and scarcely affords any excrementitious matter to be transmitted along the intestines. It may, generally, be eaten mixed with a very moderate quantity of plain beef or mutton broth ; plain meat broths prepared whh the addition of a large amount of rice, will often furnish a very suitable food in chronic diarrhoea, and are to many stomachs more palatable ; rice, also, boiled with milk and sweetened, but not too heavily, with the best of loaf sugar, or fresh milk thickened with rice flour, may be occasionally given. Should either preparation, however, be found to disagree with the patient, or to augment or keep up the diarrhoea, it should be at once relinquished. We have indeed, in numerous instances, found plain broths, when well prepared, or the juice of roasted meats with a portion of stale bread or cracker broken into it, agree better than any preparation of rice. Tapioca, sago, or arrow-root, we have seldom found an appropriate ali- ment for persons labouring under the chronic form of diarrhcEa. As soon as it can be borne, and this can only be ascertained by a cautious trial, a small portion of tender chicken, tur- key, or mutton, plainly boiled or roasted, may be eaten with rice. Pure water, toast water, or rice water, taken cold and in very moderate quantities at a time, should be the only drink allowed. Next, or more properly perhaps, equal in importance to a well-regulated diet, is an atten tion to the clothing and regimen of the patient. Individuals affected with chronic diarrhosa are particularly susceptible to the influence of a cold and damp atmosphere — a slight ex- posure to which will often increase their disease, or when we have succeeded in diminish- ing the frequency of the discharges, causes them to return as before. It is essential, thens- fore, that independent of cautiously avoiding every species of exposure, the patient should bo suitably lodged and clothed. The chamber he occupies at night, as well as during the day, iiliould be dry, of a comfortable and equable temperature, perfectly clean, and well ventilated ■ his clothing should be adapted to the season and state of the weather — flannel next the skin should always be worn; a belt of flannel around the abdomen, or enveloping this part with a flannel roller nicely adjusted, and renewed daily, will always be found advantageous. In obstinate and protracted cases, the removal of the patient from a cold, damp, and changeable, to a more equable, warmer, and drier climate, whenever praoiicable, is a measure fioiv. 51 802 DIARRHCEA. which the very best results are to be anticijiated ; it has, in numerous instances, been known to effect a speedy cure, when all other means have failed. In regard to exercise, even the gentlest kind, whether passive or active, cannot sometimes Le undertaken, from the frequent and pressing calls to evacuate the bowels which occasion- ally are found to be excited by motion of every kind : in other cases, short walks in the open air, in suitable weather, or a gentle ride in an open carriage, or sailing in a boat, are advan- tageous, and should be repeated daily if the patient's strength will admit of it. The warm bath, followed by brisk friction of the surface, is a remedy from whicli the best effects are to be anticipated in most cases of chronic diarrhoea; it maybe repeated daily, the temperature of the water being carefully graduated by the condition of the patient's surface; when this is dry and warm, a tepid bath should be preferred, but if the surface is cool, or its heat is not well sustained, the water should be decidedly warm. The temperature of the bath should never be so low as to cause the patient when innnersed in it the slightest sensation of chilliness on the one hand, nor so high on the other, nor the continuance in it so long, as to produce profuse perspiration. By a few physicians the effects of leeches to the abdomen or to the anus, in cases of chro- nic diarrhoea, are spoken of in the highest terms of commendation. Drs. Crampton and Forbes, in their very excellent essay on the disease under consideration, contained in the Cyclopsedia of Practical Medicine, {Philadelphia Edition, vol. i., p. 640,) speak of leeclies ap- plied to the anus, as a remedy " possessed of remarkable powers — often working,'' according to the common expression, "like a charm, even in cases of diarrhcEa of vej'y long standing, and of different external characters. Combined with proper diet, indeed, we are per- suaded," tliey remark, "that the greater number of diarrheas, both acute and chronic, will yield to this method, with little or no aid from other medicine.'' — "Although, in our prac- tice, we always," they add, "combine with the use of leeches, in the cases where they are indicated, a proper diet, yet we have had ample evidence of their unassisted powers in checking or removing diarrhcea of great severity and obstinacy." It is certain that many of the most obstinate cases of chronic diarrhoea are kept up by a subacute inflammation of some portion of mucous membrane of the large intestines, and in such cases a well-timed application of leeches to the anus will be productive of the best effects. In such cases, the earlier the leeches are applied the better. In detectinT; the cases in which leeching is indicated, will demand a good deal of tact, and close habits of observa- tion on the part of the practitioner — his judgment must be made up from an inquiry into the history, and a careful analysis of all the circumstances of each case, for we know of no lead- ing phenomena by which those cases where leeches are calculated to do good can be distin- guished from those to which they are not adapted ; as a general rule, however, we are per- suaded that in well-marked cases of chronic diarrhcea, particularly when the disease has existed for any length of time, leeches are at best a doubtful, if not an improper remedy. Blisters to the abdomen will, we apprehend, be found more generally advantageous than leeches ; we have found them to produce a speedy, marked, and prompt amelioration in the l^rominent symptoms of the case; the frequency of the stools, under their use, being siseedily diminished, and the discharges assuming a more natural appearance. In many instances, however, we confess that no benefit whatever has resulted from repeated blisters. They are a remedy, nevertheless, which so generally do good that they should not be overlooked. Keeping on the blister for a few hours, and then replacing it by a soft emollient poultice; repeating it as soon as the vesicated surface has healed, is a preferable plan to allowing the blister to remain on until complete vesication is produced, and keeping up the irritation thus produced by stimulating dressings. The principal internal remedies from which any good effects are to be anticipated are, opiates and astringents. Opium, either by the mouth, or introduced into the rectum, in the form of an injection, acts beneficially by quieting the pain and other uneasy sensations under which the patient labours, as well as by allaying the irritability of the bowels, and thus sus- pending the frequency of the stools ; it aids in this manner the efficacy of whatever astringent is r,«.ade use of. The Dover's powder will frequently be the best form in which the opium can be administered ; or, if this be found to disagree with the stomach, as will sometimes be the case, the opium may be given in the form of a pill; combining it with a small por- tion of ipecacuanha, we have generally found advantageous : or the opium may be given as an enema rubbed up with starch. The dose of the opium, and the period of its repetition, must be left to the judgment of the practitioner. — We have not derived the same advantage in cases of chronic diarrhoea, from the salts of morphium as from the opium itself. Of astringents, nearly the whole list, both vegetable and mineral, has been recommended, and each one is praised by different practitioners as particularly efficacious in the disease under consideration. The vegetable astringents most deserving of attention are, the catechu, kino, galls, logwood, blackberry root, and the root of the geranium maculatum. The first may "up given in t'.s form cf the infus. catechu comp. Dr. Pemberton prefers the kino tc all other astringents, in chrome diarrhoea; he gave it in doses cf a scruple made in a bolus with opiate confection (on Diseases of jib dam. Viscera'). More recently, an extensive series of ex DIARRHCEA. 803 periinents on the effects of kino in diarrhoea were made in the hospital La Pitie, in Paris, by M. Bally. In chronic diarrhoea, unaccompanied by fever or marks of inflammation in the mucous membrane, the continued use of the remedy, even for a short time, was found almost invariably to be effectual in stopping the diarrhoea. In one case of three years standing it effected a cure. But the most remarkable result of M. Bally's experiments is the alleged fact — that the kino, given in doses of twelve or fifteen grains, for several days in succession, succeeded in curing diarrhoea attended by febrile and inflammatory symptoms. (Crampton and Forbes, from Med. Gazette, v. 70D.) We have repeatedly employed both the catechu and kino in cases of chronic diarrhoea where astringents were evidently indicated, and although their beneficial effects were often promptly exhibited, they have, nevertheless, repeatedly failed in diminishing the frequency of the discharges ; we have found the galls, either in powder — combined with camphor or opium, and not unfrequently with both — or in decoc- tion, a much more effective astringent in protracted and obstinate cases of diarrhoea, than either the kino or catechu. The logwood in decoction is a favourite remedy with many prac titioners ; we have, however, been disappointed in its effects ; it may serve as a useful vehi cle for more active remedies. The dewberry-root is unquestionably a very powerful astrin gent, and well adapted to the disease under consideration; in infusion or decoction it is extensively employed by the physicians of the United States, as is also the root of the gera- nium maculatum, the efi'ects of which latter, in chronic discharges from the bowels, are very highly spoken of by many practitioners. Of the mineral astringents, we know of none superior, in cases of chronic diarrhcEa, to the acetate of lead ; in the dose of one grain, combined widi a quarter of a grain of opium and the same quantity of ipecacuanha, repeated every three hours, it will, in a large number of cases, promi^tly arrest the disease. The alum will, also, be found a good astringent in chro- nic diarrhoea; it may be administered in the form of alum whey, or in substance, combined with opium. We have given it in conjunction with powdered galls and with the best effects. The sulphate of copper, which has been employed in combination with opium by Dr. Elliots son with the most decided success, has repeatedly succeeded in our hands in arresting the disease under circumstances the most unpromising. The mode in which we have generally employed it, has been in a quarter or one-third of a grain doses combined with two grains of extract of quina and a fourth of a grain of opium every three hours. The protocarbonate of iron, the tincture of the chloride of iron, and the solution of the persesquinitrate of iron, we have repeatedly employed, and in cases of long standing have found them, especially the first two, very efficacious. They are particularly well adapted to protracted cases of the dis- ease, attended with great prostration, and more or less infiltration of the subcutaneous cellu- lar tissue. The balsam copaiba and spirits of turpentine are among the remedies from which, in nu- merous cases of chronic diarrhoea, the very best eflects may be anticipated. When the dis- charges from the bowels are small in quantity, and resemble in consistence thin starch or mucilage, or when they are dark-coloured and of a rank offensive odour, we are acquainted with no remedies from which the same amount of good may be anticiiJated. They may be combined with opiates and astringents where these are considered necessary. The sjiirits of turpentine we employ more frequently than the copaiba; it is, we believe, equally effica- cious, while it is more easily taken by the patient, and agrees better with the stomach; it may be combined widi simple syrup and water, by adding a few grains of magnesia. A variety of other remedies are recommended by different writers, the eflicacy of which is highly extolled. The most prominent are Hope's Mixture, which is a mixture of nitrous acid, camphor water and laudanum — the nux vomica and its active principle ; the ferrocya- nuret of iron ; the nitrate of silver, and the resinous extract of the artemisia vulgaris. Of the effects of these we have had no experience. In those cases in which the diarrhoea appears to be kept up by ulceration seated just within the verge of the anus, very speedy and permanent relief will always be obtained by touching the ulcers with nitrate of silver. We have given above an outline of the treatment demanded in the chronic form of diar- rhoea ; in conclusion, we would remark, that the management of this disease ahvays requires the exercise of great judgment and discretion on the part of the practitioner. Nothing would appear more easy tlian by opiates and astringent remedies to arrest the inordinate discharges from the bowels, and thus to effect the cure of the patient, but it will be found that, in many cases, when astringents are too early resorted to, the disease, instead of being removed, is aggravated ; or if by our astringents we do succeed in suspending the discharges from tlie bowels, a swollen and painful state of the abdomen quickly succeeds, producing greater dis- tress to the patient, and terminating more promptly in death, than had the diarrhoea been allowed to run its course. In numerous instances, chronic diarrhoea may be very effectually cured by a proper regulation of diet and regimen, the warm bath, blisters to the abdomen, and internally the blue pill or calomel combined with opium and ipecacuanha, and, pei haps, the use, at the same time, of moderate doses of copaiba or turpentine, without astrint;ento. There are, however, unquestionably, many cases, in the course of which astringents, az.u al' 804 SPORADIC CHOLERA. the most powerful kind, are demanded in order to effect a removal of the disease, and others, in Mdiich mild astringents, early administered, will very materially shorten its duration; and it is in rightly determining the cases and period of the disease, in which astringents are in- dicated, that the success of the practitioner in effecting its cure will frequently depend. — C] I have alluded to the influence of hot weather in predisposing the system to be affected by the exciting causes of diarrhcEa. And there is a complaint of which diarrhcea is one prominent symptom, but which is sopiething more than mere diar- rhoea — that shows itself in this country more or less, every autumn, and prevails extensively in some years, as a minor epidemic. It is rightly enough named cho' lera ; for it is attended with, and consists mainly of, a remarkable flux of bile. Sy- denham held that the disease is limited to the month of August ; and that bowel affec- tions, with vomiting, occurring at other times, are not genuine cases of cholera. But this was one of that great man's crotchets. The symptoms that mark this complaint are vomiting and purging of liquid matter, deeply tinged with, and principally com- posed of, bile ; violent pains in the stomach and bowels ; cramps of the legs and of the abdominal muscles ; a great depression of the vital powers, and a tendency to syncope or collapse. The attack is generally sudden. At first the contents of the alimentary canal are evacuated; and then a quantity, an enormous quantity sometimes, of a turbid, yel- lowish, acrid fluid, is expelled with violence both from the bowels, and by vomiting. The patients complain of a burning sensation in the epigastrium. As the vomiting and purging go on, clonic spasms of the lower extremities, and especially of the gastrocnemii, occur ; the surface of the belly is drawn up into knots : and after a while, the patient, exhausted by the pain and the spasms, and still more so by the copious discharges, grows cold and faint. Sometimes actual syncope happens : and sometimes death. Death, however, is an uncommon event of this form of cholera, in this country. The chief cause of cholera, such as has now been described, appears to be casual exposure to cold, after a continued high temperature of the atmosphere : and the great irritation of the stomach and bowels evinced by the symptoms, proceeds from the presence of bile in the intestines in undue quantity, and rendered more acrid than usual by some morbid alteration of its quality. The attack seems to be often determined by some of those causes of irritation which I just now men- tioned when speaking of simple diarrhoea; and particularly by imprudence in eating and drinking. I believe that no better treatment can be followed in this disease than that long ago laid down by Sydenham. He observes that any attempt to stop the purging and vomiting by strong drastic aperients, under the notion of expelling the irritant matter, would be like endeavouring to extinguish fire by pouring oil upon it; and that to try to lock up the acrid discharges in the ahmentary canal by means of narcotics or astringents, would be equally hurtful. He therefore was accustomed to dilute the contents of the stomach and bowels by emollient drinks, and injections, especially by chicken broth ; and so to favour their expulsion ; and when any faintness or sign of sinking began to show itself, to administer laudanum in full doses. We are seldom summoned to these cases in the outset. Generally the vomiting and diarrhoea have continued for some hours before we see the patient : so that it is expedient to give the opiate as soon as we can. If the stomach be very irritable, solid opium in the form of pill may be preferable to laudanum ; or an opiate clyster — or an opiate sup- pository — may be introduced into the rectum. [In such cases we know of no remedy more effectual than a pill composed of opium, eamphor and acetate of lead, in the proportion of one grain each. When the stomach is sa Ijritable that the pill is quickly rejected, a solution of acetate of lead, eight grains ta two ounces of water, with the addition of one grain of the acetate of morphia, in the dosa of a teaspoonful, repeated at proper intervals, will very generally be retained. — C] When the skin is cold, and the pulse sinking or irregular, carbonate of ammonia, or brandy and water, may be given by the mouth ; and a mustard poultice, or a bag of hot salt, or a moist and hot flannel sprinkled with oil of turpentine, should be applied to the abdomen. The cramps of the extremities may be relieved by dili EPIDEMIC CHOLERA. 805 gent friction with, the hand ; or some stimulating liniment may be rubbed upon the affected muscles. When the collapse is great, the patient should not be allowed to raise himself out of the horizontal posture, lest fatal syncope should follow. Opium, however, is our sheet-anchor in this complaint : it sustains the flagging powers, while it quiets the gastro-inteslinal irritation. After an attack of severe cholera, the patient is apt to be left extremely feeble ; with soreness of the muscles of the trunk and limbs : and sometimes, symptoms of viflammation of the mucous membranes will supervene ; pain and tenderness of the belly, a white tongue, thirst, and fever. And these symptoms may require some of the remedies of inflammation. Such is the disease which has long been familiar to English practitioners, as cho- lera : but about twelve or thirteen years ago, this country was visited by a severe epidemic disorder, which was also called cholera ; or by way of emphasis, the cho- lera ; or sometimes spasmodic cholera ; or Jlsialic cholera ; or malignant cholera. The symptoms of this new disease resembled, in some points, those of the old- fashioned cholera : but differed from them in more, and in more important, particu- lars. So that the application of the term cholera, or cholera morbus, to both these morbid affections, is very much to be regretted, for it has produced a great deal of confusion and inconvenience. I scarcely know how to name the newer and severer disorder. I have no right to alter the received nomenclature ; and choosing from among the many appella- tions which have been given to the complaint, that epithet which seems the least objectionable, I may call it epidemic cholera : although this term is objectionable, since the other malady, the English or sporadic cholera, is sometimes also epi- demic. The epidemic cholera so far resembled the sporadic, that it was attended by pro- fuse vomiting and purging, by extreme prostration of strength, and by cramps. But it differed remarkably in these respects; in the circumstance that the matters ejected from the stomach and bowels contained no bile (and this alone is a good reason against calling the disease cholera) ; in the early supervention of the symptoms of collapse ; and in the great mortality of the disorder. The amount of the fluid matters thrown up from the stomach and discharged by the bowels, was really in many cases wonderful. At first, perhaps, the j)atient would have so copious a stool — a consistent dejection it might be, but so large in quantity — as to lead him to conclude that the whole contents of the intestines had been evacu- ated at once. Yet soon afterwards a turbid whitish liquid would again and again pour from his bowels in streams ; and be spouted from his mouth as if from a puuip : not in general with much effort, but easily and abundantly. The matters thus dis- charged were thin, and for the most part of a whitish colour, like water in which rice has been boiled ; without fecal smell ; and containing small white albuminous flakes. There were some varieties in the evacuations, but the kind I have mentioned, resem- bling rice-water, was the most common and the most characteristic : and however else their sensible qualities might vary, this circumstance was universal, that they contained no bile. With all this there was early sinking, and collapse, as it was called. This term collapse expressed a general condition, made up, in the most exquisite cases, of the following particulars : — A remarkable change took place in the circulation, and a striking alteration in the appearance of the patient. The pulse became frequent, very small and feeble, and at last, even for hours, sometimes, extinct at the wrists. The surface grew cold ; and in most, or in many instances, blue as well as cold. The lips were purple; the tongue was of the colour of lead, and sensibly and unplea- sandy cold to the touch, like a frog's belly ; and the breath could be felt to be cold. With this coldness and blueness there were a manifest shrinking and diminution of the bulk of the body. The eyes appeared sunk deep in their sockets; the cheeks fallen : in short, the countenance became as withered and ghastly as that of a corpse. The cadaverous aspect that sometimes precedes death in long-standing aiseases, would come on in the course of an hour or two, in this complaint. 11 the physi 3s 806 EPIDE3IIC CHOLERA. cian left his patient for half an hour, he found him visibly thinner on his return. The finger nails became blue ; the hands and fingers shriveled, white, corrugated, and sodden, like those of a washerwoman after a long day's work. The, skin was bathed in a cold sweat. The voice became husky and faint. So peculiar was this change, that the sound was spoken of as the vox cholerica. These are the symp- toms which the single word collapse was meant to express. Another very striking feature of the disorder was the muscular cramp ; affecting the muscles of the thighs and calves of the legs, rendering them as hard and rigid as wood ; and drawing up into kno'ts the muscles of the abdomen. These spasmodic contractions were attended with severe pain, and constituted the greater part of the patient's suffering. During the continuance of the symptoms that I have been en- deavouring to describe, not a drop of urine was passed or secreted. One man, who was under my own observation and care, and who recovered, did not void a drop of water from Sunday morning till the afternoon of the following Wednesday. Even in the extreme state of collapse the intellect remained quite clear : the patients would continue to talk rationally to the last moment of their lives ; and, for the most part, they seemed singularly indifferent and apathetic about their condition. In the fatal cases — and a very fearful proportion of the whole number were fatal — death took place sometimes in the course of two or three hours ; and it was seldom delayed beyond twelve or fifteen. In those that recovered, the favourable symptoms were the cessation of the vomiting, purging, and cramp; the return of the pulse, and of warmth to the surface ; the disappearance of the blueness of the skin, and of the hippocratic countenance; the re-appearance of bile in the al vine evacuations; and the restoration of the secretion of urine. The course of the symptoms varied a good deal in different persons Sometimes the vomiting and purging soon ceased, and sometimes there was neither sickness nor diarrheea at all, but rapid collapse and sinking. These were thought the most formi- dable cases. However, the peculiar secretions were poured forth, in some, at least, of the instances in which none of them were eject-ed from the body. A patient died of cholera in the Middlesex Hospital without any vomiting or purging : but on ex- amming the dead body, we found the intestines quite full of the rice-water serous fluid. Sometimes the cramps were not very troublesome. The cutaneous bluen^'ss was not a universal phenomenon. The patients were in general tormented by thirst: and when attempts were made to bleed them, the blood was found dark and thick, like treacle, and scarcely moving, if moving at all, in the veins : in some cases it could not be made to flow out. Considerable hurry and anxiety of the breathing were also symptoms that I omitted to mention before. Examination of the dead bodies threw no light, that I know of, upon the nature of this frightful disease. The alimentary canal generally was found to contain a white liquid, having whiter flakes in it ; such as had previously issued from the bowels: and the mucous glands of the intestines, both the solitary and the agmi- nated, were usually large and conspicuous. The veins were loaded with thick, black, far-hke blood ; and the urinary bladder was always found empty, and contracted into the size of a walnut. Even when the blue colour had existed in a marked degree during life, it often quickly disappeared after death. And another most singular phenomenon was occasionally remarked in the dead body. A quarter or half an hour, or even longer, after the breathing had ceased, and all other signs of animation had departed, slight, tremulous, spasmodic twitchings and quiverings, and vermicular motions of the muscles would take place ; and even distinct movements of the limbs, n consequence of these spasms. The disease, of which I have drawn but a faint outline, was not known in this country till the autumn of the year 1831. There are persons, I am aware, who hold that it has always existed among us ; only not in such numerous instances as at that period ; and they appeal to Morton, and other early writers on the diseases of this country, in support of their opinion. But the malady was too striking to be over- looked, or ever forgotten, by any one who had once seen it. Certainly, till that year 1 never saw anything hke it. To be sure, I had not at that time been very many EPIDEMIC CHOLERA. 807 years in practice here. The late Dr. Babington, however, told me that it was quite new to him. He had, for a very long period, been in extensive practice, in those parts of the metropolis and its vicinity where the epidemic cholera raged most ; and when it first came among us he had the curiosity to ask every medical man whom he met, whether he had seen any case of the cholera ; and if the answer was "yes," he went on to inquire, whether, before that year, the person had ever met with the same complaint; and the reply was always, without a single exception, "no." Yet I say there were, and are, a few practitioners who denied, and deny, that it was any- thing more than the common and well-known English complaint, raging with unusual frequency and violence. But we have evidence of a different kind of the newness of the epidemic cholera to these kingdoms. Its approach was discerned afar off, as distinctly as a storm is foreseen by the rising of the clouds from the horizon in the direction of the wir>d. The disorder began to rage with terrible severity, in India, in the year 1817. I do not mean that it then broke out there for the first time. It had visited those regions again and again before. But from its eruption in the year I have mentioned, when it committed frightful devastation in the armies in the north-eastern districts of India, its course can be distinctly traced to our own thores ; towards which it approached with slow and hailing, but with sure steps, in a north-western direction. From India it spread to Persia ; and thence to Russia ; and across through Poland to Germany : and at length it was found at Hamburgh. It was predicted before that time, that the distemper would at length reach Great Britain. (Dur government had even sent two physicians into Russia to investigate its nature, in the fearful anticipation that its march across the earth would continue progressive ; and accordingly, at the expira- tion of fourteen years, it made its appearance on the eastern coast of this country ; in Sunderland : and in due time extended over every part of these islands. I say its arrival had been foreseen and foretold ; and it is absurd to suppose that a vast number of persons would fall sick and die, with symptoms quite strange to the great mass of practitioners here, merely to fulfil this prediction. The progress of the disorder did not end here. Crossing the Atlantic, it invaded America ; turning, at the same time, in a south-easterly direction, it ravaged France and Spain, and the north coast of Africa, and Italy. Moving thus onward, as it did, in defiance of all natural or artificial barriers, under opposite extremes of temperature and climate, in the teeth of adverse winds, over lofty mountain chains, across wide seas, through " hot, cold, moist, and dry" — in what manner, you will probably ask, was this wasting pestilence propagated? Upon this point various and discordant opinions are entertained. Many persons believe that the complaint spread by contagion ; more, however, that it was not con- tagious at all, but arose from some deleterious cause with which the general atmo- sphere of the place was pregnant. Now 1 cannot reconcile the phenomena of the appearance and extension of the malady with either of these hypotheses exclusively. It must, I think, be granted that the complaint, in every instance, was excited by the apphcation of some noxious material to the body, some positive poison. It is certain, also, whichever hypothesis may be chosen, that many more individuals were exposed to the agency of this poison, than were injuriously affected by it. This exemption from the disease no more invalidates the doctrine of contagion, than it invalidates the doctrine of some diffused atmospheric influence ; nay, it is more explicable upon the former than upon the latter supposition ; for while many may avoid a specific conta- gion, all are immersed in, and all breathe, the common atmosphere. But the ex- emption shows this: that the exciting cause, to be effective, required a fit recipient: that the susceptibility of being hurt by the poison in its ordinary dose and intensity varied much in different persons; and in the majority was very faint, or wanting. It is clear that the poison travelled. It is equally clear to my mind, that it was portable ; and therefore communicable from person to person. I even believe thai it was capable of being conveyed, and was actually conveyed, from one spot to another, by persons who were themselves proof against its effects. The innumerable authentic instances of coincidence, in point of time, between the first outbreak of th«' disorder in a particular place, and the arrival at that place of some person or persona 808 EPIDEMIC CHOLERA. from an infected locality, prove that the poison could be thus carried. Of this direct importation of the disorder into new and distant places, by infected individuals, and of its subsequent extension from those individuals to others who had intercourse with them, you may see a vast number of examples, collected by Dr. James Simpson, in the 4yth volume of the Edinburgh Medical and Surgical Journcd. The evidence there adduced of the portability of the poison is abundant, and to my mind, irresist- ible. Whether the malady was contagious in the same sense in which small-pox is contagious — whether, I mean, the cholera poison had the power of multiplying and reproducing itself in the human body, as yeast multiplies itself during the fermenta- tion of beer — is a ditTerent and a much more doubtful question. A disorder may be contagious, without this property of reproduction in the animal fluids. The itch is contagious. The itch is produced by a minute parasitic animalcule, whose existence has, of late years only, been assured to us by the microscope. Suppose that these iich insects could fl)', or were capable of being wafted through the air — they would then represent what is conceivable enough of the subtle exciting cause of cholera. Between the two epidemic distempers, influenza and cholera, there were numerous and striking points of similitude or analogy. They have observed the same, or very nearly the same, geographical route.' Both, issuing from their cradle in the east, have traversed the northern countries of Europe, till, arriving at its western boundary, they have divided into two great branches ; the one proceeding onwards, across the Atlantic, the other turning in a retrograde direction, towards the south and east. The main difierences between them have been, that whereas the poison of influenza spared very few of the community, inflicting a disease which, of itself, was seldom fatal — the poison of cholera, on the contrary, smote very few, but with so deadly a stroke that as many sank beneath it, probably, as recovered. Both were general disorders, affecting the whole system, but in both the most prominent of the symp- toms had reference, in the majority of cases, to the mucous membranes ; to those of the air-passages in the influenza ; to those of the alimentary passages in the cholera. Now this strong analogy has been made use of as an argument that the cholera was not contagious. " The influenza (say the objectors) had no contagious proper- ties ; therefore it is, a priori, likely that the cholera had none." But 1 demur to the major proposition. Cuilen thought the influenza was contagious, and I adverted, in a former lecture, to some facts which favour that belief. Supposing it, however, to be so, the proof of its contagious property must, from the very nature of the case, be extremely difficult. Its visitations are so rapid, widely spread, and multitudinous, that there is no time for its transference from house to house, or from person to per- son ; yet it may be nevertheless transferable. Its inherent rate of locomotion outstrips and precludes the tardier conveyance of ihe poison by man. Its contagious qualities (granting them to exist) are hidden in its universality, and can seldom be traced but by accident. I therefore esteem this argument from analogy as worthless ; and my own creed respecting the cholera is, that it u'as contagious, in the hmited sense already explained ; but that its contagious power was not very great : that a com- paratively small part of the population, of this country at least, was susceptible of its operation ; and that few were in much danger of suffering from exposure to the physical cause of the disease, except under circumstances of predisposition. At the san)e time I believe that a great majority of the cases of cholera were not attributable to direct contagion, but to the poison diffused through the atmosphere. There is no- thing inconsistent in the supposition thot this noxious matter travelled sometimes by its own peculiar powers, sometimes made use of vehicles. [During the prevalence of the cholera in Philadelphia, in 1832, we closely investigated every fact calculated to throw light upon the question of its contagious or non-contagious character, and for this investigation, our position in the Board of Health and as chief of a large hospital, afibrded us ample opportunities — hut we were unable to discover the slightest evidence of the disease having been in any one instance comraunicated from the sick to the well.— C] This, I say, is my creed upon the vexed question of contagion. Respecting the special nature of the poison I can only guess ; and my guessing, as you may have perceived, takes the same direction as before. I adverted, when speaking of the EPIDEMIC CHOLERA. 809 influenza, to what Dr. Holland has called " the hypothesis of insect life as a cause of disease." I shall not repeat the observations I then made ; but I would refer you, for much curious thought and information upon the subject, to Dr. Holland's very interesting essay. The hypothesis in question squares more readily than any other that I know of, with the ascertained history of the disorder: with its origin, after an unusually wet season, in the low marshy country, and hot atmosphere of Bengal : with its irregular but continuous migrations : with its dying away after a while, and its occasional and partial revivals. But still, remember that we are deahng merely with an hypothesis. Whatever obscurity may overhang the exciting causes of the epidemic cholera, we are quite sure that certain circumstances exercised a strong predisposing influence upon the human body, to render it more than usually susceptible of the disease. The predisposing causes, as might well be imagined, were such as tended to debili- tate the system : and therefore poverty, which implies scanty nourishment, and frequently also the confinement of several persons to a narrow space, and want of fresh air; poverty, which includes these and other evils, was found to predispose the body to a ready reception of the malady. But to intemperance, more than to any other single cause, may the proclivity to become affected by this species of cholera be ascribed ; and especially to the intemperate and habitual use of distilled spirits. This fact was peculiarly manifested in the selection, by the disease, of its victims in this country ; and it has been remarked almost everywhere else. I have all along spoken of the visitation of epidemic cholera in the past tense, because, for the last eleven or twelve years, we have heard but httle of it. Yet we can scarcely venture to hope that the stranger pest has altogether forsaken us, for we have had slight sprinklings of the disease in and near London, every summer, I be- lieve, since 1832; but it has never again been extensively prevalent or epidemic. Certainly it dealt lightly, upon the whole, with our country. It was much more general, and more widely fatal, in France, which it visited subsequently to its arriving here : it was very destructive also in its subsequent course, both westward and to- ward the south-east. The epidemic cholera made its attack in two different modes, [n one it seized upon the patient suddenly, and without warning. This was comparatively rare. Much more commonly the specific symptoms were preceded, for some little time, even for some days perhaps, by diarrhcEa. And this I take to be the most important practical fact that was ascertained during its prevalence among us. When the dis- ease was once fairly formed, medicine had very httle power over it ; but in the pre- liminary stage of diarrhcsa it was easily manageable. Unfortunately people are inclined (especially those classes of the community among whom the cholera most raged), to regard a loose state of the bowels as salutary ; and to make no complaint of it, and to do nothing for it : or, in other cases, they conceive it to proceed from some peccant matter within, which requires to be carried off, and they take purgative medicines to get rid of it. Both of these are serious and often fatal mistakes. Mere neglect of the diarrhoea frequently permitted it to run into well-marked and uncon- trollable cholera; and the employment of purgatives hastened or insured that cata- strophe. The proper plan of proceeding, I am convinced, was, to arrest the diarrhoea as soon as possible after its commencement, by astringents, aromatics, and opiates. You may object, perhaps, that the cases that were cured in this way were not cases of cholera at all, and never would have been; but simple ordinary diarrhoea. It is impossible to prove the contrary, no doubt; but the presumption is strong that the diarrhoea would in many, and, perhaps, in most instances, have run on, if not check- ed, into the more perilous form of the disease. In many places, when, taught by experience, the authorities estabhshed diarrhcea dispensaries, to which those attacked by looseness of the bowels were warned and invited to apply, that the looseness might forthwith be corrected ; in many such places the cholera, which had before been cuiting the inhabitants off by scores, and hundreds, began instantly to declinv) in frequency. I venture to advise you, supposing the disease should reappear, of whenever in the autumn a suspicion arises that this form of cholera is pr" ^cnt in the 3s2 810 EPIDEMIC CHOLERA. community, not to try, in cases of diarrhoea, to carr)^ off the presumed offending matter, but to quiet the irritation, and stop the flux as soon as you can. But when the regular symptoms, peculiar to the severe form of cholera, had set in, medicine, I repeat, had very little influence upon it : and accordingly, as might have been expected, a hundred different cures of the disease were announced, most of them all but infallible. Some persons held that timely bleeding would save the patient ; others relied confidently upon mustard emetics. Hot air baths were manu- factured, and sold to a great extent, to meet the apprehended attack in that manner without delay. Certain practitioners maintained that the disease was to be remedied by introducing into the system a large quantity of neutral salts, which were to liquefy and redden the blood, and to restore the functions of the circulation. But of this practice it was said in a sorry but true jest, that however it might be with pigs or herrings, salting a patient in cholera was not always the same thing as curing him. In a great number of the sick the blood was mechanically diluted by pouring warm water, or salt and water, into their veins. Some physicians put their trust in brandy, some in opium, some in cajeput oil, which rose to I know not what price in the market ; some again, in calomel alone. Now, I would not willingly mislead or deceive you on this point, by speaking with a confidence which I really have no warrant for, of the success or propriety of any of these expedients. I believe that each in some cases did good, or seeincd to do so ; but I cannot doubt that some of them did sometimes also harm. I had not more than six severe cases under my own charge : and I congratulated myself that the mortality among them was not greater than the average mortality. Three died, and three (I will not say were cured, but) recovered. The three that died I was called in to see w^ien the disorder was at its height : and in each case it went on with frightful rapidity, in spite of all the means adopted, and proved fatal a few hours afterwards. The three that recovered I saw somewhat earlier, but still not till the specific symptoms were present : one was a girl in the hospital. They all recovered under large and repeated doses of calomel. Yet (as I said before) I do not venture to affirm that the calomel cured them. In the first case which was treated in that way, I merely followed up the plan that had been begun by Dr. Latham, who had visited the patient for me when I was accidentally absent. I found that he had fell better, less sick and less faint, after taking half a drachm of calomel at a dose ; and I repeated the same dose many times, for after every dose his pulse rose somewhat, and he appeared to rally. This was the same man whom I mentioned before as having made no urine from the Sunday to the Wednesday : all that time he kept discharging rice-water stools. At last, on the fourth day he passed a little water, and his alvine evacuations became rather more consistent, and began to look green: and from that time he graduall}- got well. Afterwards I treated my hospital patient in the same way, and with the same event. Yet I will not pretend to sa\' that these persons might not have done quite as well if they had been left entirely to them selves. [Soon after the appearance of the cholera in Philadelphia, we were persuaded that had we a remedy capable of arresting the inordinate serous discharge, which in this disease is poured out by the mucous membrane of the alimentary canal, we should very readily suc- ceed in its cure. We were, therefore, induced to try the effects of the acetate of lead, with the remedial powers of which in a somewhat analogous disease, the cholera of infants, we 'vere familiar. We administered it in pills, combined with opium and camphor, or when ihe stomach rejected it in this form, in solution with the acetate of morphia, and at the same ttrne, by the rectum, in injections composed of a strong solution with the addition of lauda- num. Under this plan of treatment, the discharges were in numerous instances promptly arrested, and the patients recovered, even after the stage of collapse had ensued. From our subsequent experience with this plan of treatment, we are convinced, that had the remedy been generally resorted to from the commencement of the epidemic, the mortalit}' of the disease would have been materially reduced. Since 1832 many cases of the cholera have occurred every year: all that have fallen under our notice were treated by the acetate of l^ad, and we have lost ftone. — Dr. Graves has subsequently recommended the same remedy, auii speaks of its effects in the highest terms. — We usually administer the acetate of lead in the dose of one grain, combined with one of opium and the same quantity of camphor, «very hour, or two, or three, according to the violence of the attack. The thirst of tb« CHOLERA INFANTUM. 811 patient was assuaged by small portions of ice held in the mouth and allowed slowly i«> dis solve — large and frequent draughts of cold water we always found to be injurious. — Cups to the abdomen were frequently employed, and we have reason to believe always with advan tage. — From warm bathing, dry heat to the surface, sinapisms, stimulating pediiuvia, we never saw any good effects result. — C] Some of the expedients recommended had certainly a very marked and immediate effect upon the condition of the patients, especially the injection of warm water into the veins. Many instances of this were related at the time. One I myself saw. The patient was a young man, who was nearly moribund apparently. His pulse had almost, if not quite disappeared from the wrist ; he was very blue, and his visage was ghastly and cadaverous : in one word, he was in an extreme state of collapse. Out of this he was brought in a few minutes by injecting warm water into one of the veins in the arm. The pulse again became distinct and full ; and he sat up, and looked once more like one alive, and spoke in a strong voice. But he soon relapsed*, and a repetition of the injection again rallied him, but not so thoroughly : and in the end he sunk irretrievably. Dr. Babington told me of a patient whom he saw speech- less, and all but dead, and whose veins were injected. He then recovered so as to sit up, and talk, and even joke, with the bystanders: but this amendment did not last either. Yet even this temporary recovery might sometimes be of great import- ance : might allow a dying man to execute a will for example. And some of the persons thus revived got ultimately well. We had for some time a woman in the Middlesex Hospital acting as nurse, who had been rescued, when at the verge of death in cholera, by the injection of warm water into her veins. It was remarked of those who recovered that some got well rapidly, and at once ; while others fell into a state of continued fever, which frequently proved fatal some time after the violent and peculiar symptoms had ceased. Some, after the vomiting and purging and cramps had departed, died comatose ; over-drugged sometimes, it is to be feared, by opium. The rude discipline to which they were subjected might account for some of the cases of fever. And the process of artificially replenishing the veins was certainly attended with much danger. The injection of air with the water — inflammation of the vein from the violence done to it — an over-repletion and distension of the vessels by the hquid — might, any one of them, and sometimes, I suppose, did, occasion the death of the patient. Never, certainly, was the artillery of medicine more vigorously plied — never were her troops, regular and volunteer, more meritoriously active. To many patients, no doubt, this busy interference made all the difference between life and death. But if the balance could be fairly struck, and the exact truth ascertained, I question whether we should find that the agorecrate mortality from cholera in this country, was any way disturbed by our craft. Except- ing always the cases in which preliminary diarrhnea was checked, just as many, though not, perhaps, the very same individuals, would, probably, have survived had no medication whatever been practised. I do not know that I have any thing more to say that could be of any use to you, in respect to the epidemic cholera. [Of the diseases to which children are liable in the middle and southern portions of tno United States, k-w produce a greater amount of mortality than Cholera Infantum, or the Summer Complaint. It is an endemic of all our larger cities, during the season of the greatest heat; attacking children between four and twenty months of age, or at the period of the first dentition. So generally is it confined to this period, that an infant's second summer ia considered by mothers as one of unusual peril, and should it escape an attack at diis period, or pass safely through the disease, it is considered to have a fair chance of surviving the period of infancy. The first symptom of the disease is usually a profuse diarrhoea, the stool being very fluid, generally of a very light colour, though often of a pale yellow or green; to the diarrhoea is soon added an extreme irritability of the stomach, everything taken into it being rejected immediately, and with violence. The irritability of stomach, in most cases, continues through out the attack, and in many frequent spontaneous vomiting is a pronrinent symptom. After the disease has continued for a short time, the discharges from the bowels are ordi narily composed entirely of a perfectly colourless and inodorous fluid, containing often minutu mucous flocculi, and are disch-arged without the least eflbrt. They are occasionaMv .however, 812 CHOLERA INFANTUM. very small in quantity, and squirted, as it were, from the anus. Li these cases, there is usually more or less tormina and tenesmus. Very frequently the vomiting becomes suspended, even at an early period of the attack, ■while the discharges froin the bowels continue, or augment in frequency and in quantity, the irritability of the intestinal canal being often such, as to cause whatever food or drink is taken to pass off rapidly, without having undergone the slightest change. The infant becomes quickly afl'ected with extreme langour and prostration, and is rapidly emaciated — being reduced in a few days, often hours, to an extent that would scarcely be credited by those unacquainted with the disease. The pulse, from the very commencement of the attack, is usually quick, frequent, small, and often tense. The skin is dry and harsh, the head and abdomen are often hot, while the extremities retain their natural temperature, or are even decidedly cold. The tongue ia moist, and covered with a white slimy mucus. There is always intense thirst — whatever fluid is taken being almost immediately ejected from the stomach. The child sulfers more or less pain in the abdomen, as indicated by its fretful ness, low moaning cries, frequent change of posture, the drawing up of its knees, and its occasional acute screams. The abdo- men is sometimes tumid, and generally tender to the touch. Towards evening, there occurs, in most cases, a decided febrile reaction. In many cases, some degree of delirium, with an injected and wild appearance of the eyes, and a tossing of the head backwards and forwards, is early manifested. When this is the case, we have frequently seen the patient attemjot to bite or scratch his attendants. The disease usually runs a protracted course. The discharges from the bowels continue to be frequent and profuse, but dark-coloured, like dirty water, or the washings of stale mea^ and often very offensive. They not unfrequently, however, are small in quantity, and composed entirely of a dark-coloured mucus, mixed with the food and drinks that have been taken. The emaciation of the patient becomes extreme; his eyes are languid, hollow, and glassy; his countenance pale and shrunken; his nose sharp and pointed; and the lips thin, dry and shrivelled. The surface of the body becomes cool and clammy, of a dirty brownish hue, and often covered with petechiffi. The tongue is dark-coloured, smooth and shining, or covered, as well as the parieties of the mouth, with aphtha. In many cases the child lies constantly in an imperfect doze, with half-closed eyelids, and so insensible to external impressions, that flies will frequently light upon the half-closed eyeballs without the patient exhibiting the least consciousness- of their presence. The abdomen becomes more or less tympanitic, and tlie hands and feet of a leaden hue, or pallid and cedematous. The fauces, becoming dry, causes a sense of uneasiness, which induces the patient to thrust his hand deep in the mouth, as if to remove some offending substance. In many of the protracted cases, an eruption of very minute white vesicles occurs upon the neck and breast. This Dr. Dewees considered to be invariably a fatal symptom ; but we have seen many patients recover, even when this eruption has been the most extensive and distinct. The patient, unless relieved from his suffering by a judicious treatment, becomes daily more and more exhausted, rolls his head about when awake, and utters constantly short, plaintive, scarcely audible cries. He falls at length into a state of complete coma, death being frequently preceded by a convulsive attack. Not unfrequently, at a much earlier period of tlie disease, the brain becomes affected, and the child dies with all the symptoms of acute meningitis. Cholera infantum is of very variable duration. In violent attacks, the prostration which suddenly ensues is occasionally so extreme, that the patient is destroyed within the first twenty-four hours. Usually, however, the disease is of many days, or even weeks' con- tinuance, and the patient generally sinks, apparently from a total cessation of the nutrition of the system. The lesions exhibited by the post-mortem examination of those who have died from cholera infantum, vary according to the period of the disease when death takes place. When the dis- ease has been of short continuance, the mucous membrane of the alimentary canal presents often an abnormal paleness, and the liver is more or less congested. When the case has been of a more protracted character, increased redness in points or patches, in different parts of the stomach and intestines, is often present. The red points are sometimes very minute and isGiated, and spread over a considerable portion of the stomach and duodenum, or over the fcmall intestines only. They have the appearance, generally, of minute extravasations of blood. In the lower intestines the points occur in clusters, so as to form patches of redness, varying in size, though never of any great extent, and often slightly elevated, from a thick- ening of the mucous tissue at the parts occupied by them. Occasionally, portions of the mucous membrane are more or less softened — often witliout the slightest inflammation. In other instances, increased redness of some portion of the intestines exists, with contractions, often extreme, of its calibre. The mucous follicles of the intestines are very generally enlarged, often in a state of inflammation, and occasionally of ulceration. Dr. Horner describes the appearance of the CHOLERA INFANTUM. 813 enlarged follicles, as resembling a sprinkling of white sand upon the surface of the mucous membrane. The intestines are generally empty, or contain merely a small amount of thick tenacious mucus. Drs. Page and Lindsly describe an appearance of dark spots upon the mucous membrane of the stomach, above its pyloric oriiice. We have never detected it. The liver is almost invariably enlarged, and more or less congested ; while the gall-bladder is filled with dark-green bile, or a pale and almost colourless fluid. Dr. Page tlescribes the liver as being in some cases large, soft, and spongy ; and Dr. Horner, as being usually of a light yellow or mottled colour. In the more protracted cases, indications of inflammation of the meninges of the brain are very frequently present. The prognosis in cholera infantum will depend very much upon our ability to remove the patient from the influence of the impure and heated air by which the disease has been pro- duced and is kept up, as well as upon the period of the attack at which the treatment is com- menced. Without this removal, it is scarcely possible to effect, in any case, a permanent cure ; while in most cases — in their commencement, at least — little else is required to arrest the dis- ease: even at a later period, its effects are often strikingly evinced in the rapid improvement of the patient, from almost the very moment the removal takes place. In cases where the dis- ease has continued for many days, and reduced the patient to a state in which a fatal termina- tion would seem inevitable, by removal to the free open air of the country, and an appropriate course of treatment, a very rapid recovery is often effected. Cholera infantum is evidently produced by the action of a heated, impure, and stagnant atmosphere, directly upon the skin, and indirectly upon the digestive mucous surface, at an age when the latter is strongly predisposed to disease from the effects of dentition, and fiom the increased development and activity of the muciparous follicles which takes place at that period. The dependence of cholera infantum upon a high degree of atmospheric temperature is shown by the fact, that its prevalence is always in proportion to the heat of the summer ; the disease increasing and becoming more fatal with the rise of the thermometer, and declining with the first appearance of cool weather in the autumn. That, however, the dis ease is not produced by heat alone, in its more aggravated forms, is proved by its occurring almost exclusively in the larger and more crowded cities of the Middle and Southern States, and by its especially prevailing, and being most destructive to life, among the children of the poorer classes, inhabiting small, ill-ventilated houses, situated in narrow, confined lanes, courts, and alleys, or in situations abounding with accumulations of filth. When it occurs m the country, which is rarely the case, it is almost exclusively in low, damp, and otherwise unhealthy situations. The process of dentition is unquestionably a predisposing cause of the disease ; while premature weaning and errors in diet act often as exciting causes. In regard to the treatment of the disease, this is very simple, and generally successful, whenever we are able to remove the patient from the heated, confined, and impure atmo- sphere by which the disease has been generated, to a situation where he may enjoy the advantages of a cool air and free ventilation. The infant should be confined to the breast, or, if weaned, to a diet of fresh rennet-whey, with the addition of gum acacia, rice-water, tapioca, or plain meat broths, with some cool, perfectly bland, and sliglitly mucilaginous fiuid for drink. He should be immersed daily in a bath, warm or tei:)id, according as the temperature of the skin is deficient or increased. If the removal of the patient is impracticable, he should be placed in as pure, cool, and free an atmosphere as possible, and carried frequently abroad in any open and healthy situa- tion in the neighbourhood of his residence, in a carriage, or in the arms — or where his resi- dence is near a large river, he should be taken on the water in a boat. His clothing should be perfectly clean and dry, and sufficient to guard against the influence of sudden changes of temperature, but not so warm as to overheat tlie patient : flne soft flannel, or soft, coarse ■muslin, worn next the skin, will be proper in all cases. His sleeping apartment should be, if possible, large and airy. He should sleep upon a mattrass, or on a blanket folded and laid upon the sacking-bottom of the bedstead, or upon the floor of the crib, his body being defended by a light, loose covering. The gums should be carefully examined, and if they are hot, swollen and inflamed, they should be freely lanced. When the disease commences as a simple diarrhoea, the warm bath, repeated daily, or even night and morning, and followed by gentle friction over the surface of the body, with a hand or soft dry cloth ; cold mucilaginous drinks, and a combination of a sixth of a grain of calomel, about four grains of prepared chalk, and a half a grain of acetate of lead, repeated every three or four hours, will ordinarily arrest it. To subdue the irritability of the stomach, from a sixth to a fourth of a grain of calomel, rubbed up with a little dry loaf-sugar, and sprinkled npon the tongue, will very generally bo found suiRcient. When, however, this fails, a few drops of the spirits of turpentine, i these masses, in what often happens when foreign bodies of some magnitude are •wallowed and remain in the tube. In one of the earlier volumes of the Medico-Chirurgiccd Transactions you may iead the history of a celebrated knife-eater. A sailor, in a drunken bravado, swal- lowed a clasp-knife. This was followed by no immediate bad consequences, and WORMS. 825 he used to brag of the feat he had performed. And afterwards, either to satisfy the scruples of those who did not believe his assertions, or for the sake of rewards which some people were thoughtless and cruel enough to offer, or to win wagers, he stupidly repeated his folly, till he had swallowed (I think) thirteen knives of various kinds and sizes. They killed him at last ; and their remains were found in various parts of the alimentary tract. But he had no serious symptoms for some time. Mr. Wakefield has given us an account of a culprit, confined in the Cold Bath Fields Prison, who had swallowed seven half-crowns before his incarceration. One day out they all clattered into the pan of his night-chair. I saw a prisoner myself, last autumn, in the Penitentiary, who, after some sick- ness, and tenderness of the belly, voided a half-crown from the rectum. This was in November, 1839. He had swallowed the piece of money two years and a half before — viz., in March, 1837; and, until within a week of his passing it, he had enjoyed excellent health. Before I proceed to any of the other viscera of the abdomen, I may as well take fcuch notice as the nature and hmits of these lectures admit and require, of the sub- ject of tvorms ; in which subject the intestinal canal is more concerned than any other part of the body. It seems a strange as it is a somewhat humiliating fact, that the human body should furnish food and a habitation for many of the inferior crea- tures ; not only after death, but while it is yet alive. The parasitic animals which thus prey upon man have been much studied from time to time, and especially of kte, in their relations to natural history : and some of the facts that have been ascer- tained respecting them you ought to be acquainted with. But I shall pursue the subject no further in this place than it concerns us as pathologists and physicians. Its natural history will, no doubt, be fully taught you by the professor of comparative anatomy. First, then, it is a notorious fact that numerous parasites do crawl over our surface, burrow beneath our skin, nestle in our entrails, .nd riot, and propagate their kind, in every corner of our frame : produ iu oftentimes such molestation and disturbance as require the interference of medicine. Nearly a score of animals belonging to the interior of the human body have been already discovered and described : and scarcely a tissue or an organ but is occasionally profaned by their inroads. Each, also, has its special or its favourite domicile. One species of strongJe chooses the heart for its dwelling-place, another inhabits the arteries, a third the kidney. Myriads of minute worms lie coiled up in the voluntary muscles, or in the areolar tissue that connects the fleshy fibres. The gxcinea-worm and the chigoe bore through the skin, and reside in the subjacent reticular membrane. Hydidids infest various parts of the body, but epecially the liver and the brain. A Httle fluke, in general appearance much like a miniature flounder, lives, steeped in gall, in the biliary vessels. If you squeeze from the skin of your nose what is vulgarly called a maggot — the contents, namely, of one of the hair-follicles, — it is ten to one that you find, in that small sebaceous cylinder, several animalcules, extremely minute, yet exhibiting under the microscope a curious and complicated structure. Even the eye has its living in- mates. But it is, I repeat, in the alimentary tube that we are most apt to be plagued with these vermin. Independently of minute scientific divisions into genera and species, there are some broad lines of distinction between these creatures. Thus some kinds of worms occupy, as I have said, the interior of our bodies ; these are called, accordingly, entozoa: some dwell externally, and are named ectozoa; or, more properly, per- haps, epizoa. There are five sorts of intestinal worms, sufficiently common to make it likeiy that you will meet with some or most of them in your future practice. I shall, on that account, direct your attention first of all to them. 1. A frequent tenant of the human intestines is the round worm, so like in shape, bize, and general appearance to the common earth-worm. It is from tnis species, no doubt, that the whole class are called worms. This round worm is ofien denonni- 826 ROUND WORMS. nated a lumbricus ; but that is erroneous : it is a species of ascaris, and it has been named by naturalists the ascaris lumbricoides — the ascaris that is hke a lumbricus. 2. The ascaris vermictdaris ; or the oxyuris vermicidaris. These animals resemble slender maggots rather than worms. They are often called simply asca- Hdes: or, in the vernacular, //n-e«(/-i6'orms ; and they are very much like bits of white thread. 3. The tricocephalus dispar ; also a small worm, but longer than the last ; its vulgar denomination is accordingly the long thread-worm. 4 and 5. Two species of tmnia ; long, flat, articulated animals, resembling pieces of tape. The txnia solium, or common tape-worm of this country ; and the taenia lata, or broad tape-worm. Of all these I proceed to mention a few more particulars. The ascarides lumbricoides, or round worm, is, I say, very hke the common earth- worm, and used to be thought identical with it. It runs from five or six inches to about a foot in length, and it is of a reddish-brown colour, with a tinge of yellow. The female worm (for they are of both sexes) is much more common than the male, which is smaller also, and may be distinguished by a curved state of its tail, and by the genital organs. Sometimes young ones are met with, about an inch and a half long. I shall not go into any minute description of the anatomy of these worms. You cannot mistake them, except for earth-worms ; and the points of distinction between the two, when known, are easily perceived. The earth-worm, then, is redder than the intestinal worm, and less pointed at its two ends. The mouths of the two differ much. That of the earlh-worm is a short longitudinal fissure, or slit, placed on the under surface of its small rounded head. In the ascaris lumbricoides, the mouth is situated at the extremity of the worm, is of a triangular shape, and is surrounded by three tubercles. It is curious that similar differences, only reversed, exist in respect to the other aperture of the alimentary canal, the anus. In the earth-worm this is terminal, at the very end of the cylinder : in the ascaris it is a transverse sht near the extremity, and on the other surface of the animal. Again, the earth-worm has rows of Httle projections, like bristles, upon its under surface ; feet they may be called, for they appear to serve the purposes of locomo- tion. In the parasite there is nothing resembling this. By attending to these plain marks, you may avoid being deceived by impostors, who pretend that they are afflicted with worms, and to prove their case bring you an earth-worm or two in a bottle. The habitat of these worms is in the small intestines. They may, and do, pass upwards into the stomach, or downwards into the large bowel : in either case they are generally soon voided. Sometimes they are vomited up: but they have been known to creep into the oesophagus, and thence into the nostrils. Andral states that he saw a case in which a child was strangled by one of these worms, which had turned back and become e-ntangled in the larynx. They have been found also ni the excretory ducts of the liver. This Andral has witnessed ; as has also Dr. Baron in this country. It was formerly thought that these animals were capable of perforating the coats ol the intestine: but that opinion is now generally exploded. They do not appear to have the means, if they possess the inclination, to bore through. What gave rise to this notion was the circumstance of their sometimes passing out of the bowel, through ulcerated or other openings, into the peritoneal sac ; or into the vagina or bladder; or outwards through hernial apertures. The number of these worms existing at the same time in the same person is very variable. The late Dr. Hooper mentions a girl, eight years ok', who voided upwards of 200 in the course of one week. An instance is recorded of a soldier who passed 3G7 in six days. Another patient got rid of 400 in a fortnight. Fifty or sixty have been found in the same dead body. They often lie in packets. The corresponding portion of mucous membrane has in some cases been red, in THREAD-WORMS — TAPE WORMS. 827 Others quite natural. Sometimes two are met witii ; sometimes one only. So that we cannot infer with certainty that because one such worm has been voided, more remain behind ; although that is always probable. This worm is more common in the early periods of life than afterwards. The other species of ascaris, the ascaris vermicularis or thread-worm, resembles the former in some respects, but it differs from it remarkably in size. Here also the female is longer and larger than the male ; the one being perhaps half an inch in length, the other not two lines, and very slender. The thread-worms hve principally in the rectum, and sometimes exist there in vast numbers ; thousands : and they pass out, or are ejected, matted together with mucus in the shape of balls, or entangled in portions of excrement. Sometimes they emerge of their own accord, and crawl about the neighbourhood, getting into the vagina in females, and even into the urethra, and causing intolerable irritation, itch- ing, and distress. They are seen, when recently expelled, to be very lively ; moving their anterior extremity about continually. To this restlessness and activity the animal owes its name, which is derived from the Greek word asxapc^nv, to leap. The Germans call it springwurm. This worm also belongs chiefly to infancy and childhood. It does sometimes infest adults ; but generally as the patient grows older the animals cease to trouble him, whether curative means are employed or not. Bremsen, however, knew a person eighty years old, who was nearly killed by them. [We have met with these worms nearly as often in the adult as in the chikl. — According to our experience, the female adult is much more liable to them than the male. — C] The third kind of these round worms is the long thread-worm ; the tricocephalus dispar! It is from an inch and a half to two inches in length. One extremity, that to which the head belongs, is extremely fine and small ; and then suddenly bulges out into a thicker body. The thinner portion is about twice as long as the thicker. Its name is derived from this variation of size. Spi-I, a hair, and xs^axyj, the head ; the portion to which the head is appended being as fine as a hair. At one time the head was mistaken for the tail, and then the animal was called tricuris, from i9p(.|, and ovpa, the tail. The thicker or body part is rolled up in a spiral form, especially in the male, the female being straighter. This worm is of a white colour, unless tinged by its food. It also affects the large intestine as its place of abode ; but the opposite end of that gut, the ccecum, is its favourite spot. It is sometimes met with in great numbers, attached to the mucous membrane by its head ; the body hanging loose. Although jjenerally overlooked, it is said to be extremely common, and to occur in most bodies. I have seldom seen it ; but then I have never hunted for it. It infests the dog, the fox, the monkey, and other mammalia. This species of entozoon attracted a good deal of attention about seventy or eighty years ago ; it being then first observed in Germany d'uring the prevalence of an epi- demic fever, which was characterized by a profuse mucous diarrhoea. Rcedererand Wagler have given an excellent account of this disorder, under the title of morbus mucosus. It was thought to have been excited by these worms, which were found in abundance in the caecum after death. This opinion must have been erroneous, for the animals were known in other places, long before ; and they produce, in general, no inconvenience. The two taenicB are more formidable beasts. With a general resemblance between them, there are strong particular distinctions. The tfenia solium, or common tape-worm, has a minute hemispherical head, and a long flat body of a whitish colour, composed of many pieces curiously articulated together. The articulated pieces are quadrilateral, very short and small in the crea- ture's neck ; they become gradually square as the distance from its head increases ; and at length are longitudinally oblong. These portions, ox joints as they are called, have foramina on their margins, leading to ovaries within. The foramina, which are 828 TAPE- WORMS. very conspicuous, are placed alternately on the one side of the ctnimal and on the other: on the right edge of one joint, on the left of that next to it. This arrange- ment is, however, subject to occasional irregularities. Each joint is let in, as it were, to that immediately in front of it, and the connection between them is not very firm. It is less firm in proportion as the animal is older, and as we approach its posterior extremity : so that the segments are apt to come away, by stool, separately. They have somewhat the appearance of the seeds of cucumbers or gourds ; and the para- sites, for that reason, are sometimes called cucurbitine worms. Blumenbach and others have supposed that each articulated piece was a distinct worm : but that is not the case. The head of the animal, and i-ts peculiar terminal segment, forbid this belief. The common tape-worm is very narrow and thin towards its anterior extremity ; one-third or one-quarter of a hne perhaps in breadth. At its broadest part it may be from three to six lines wide. The young taeniae see?n to be merely wrinkled ; but they are really articulated. The question has been started, whether the lost joints are ever reproduced. It is beheved that no new joints are formed, but that the original ones are gradually more and more developed. The animal is hermaphrodite. Specimens of this worm are preserved, upwards of twenty feet in length. Much exaggeration seems to have existed formerly about its size. It has been said to mea- sure ISO, and even 300 feet. In all probability separate portions of several have been estimated as forming parts of one and the same worm. There is one case well authenticated (it is cited by Bremser from Robin) in which a tape-worm was found to extend from the pylorus to within seven inches of the anus ; adhering firmly to the mucous membrane all the way. The animal has the power of motion. Its movements are felt by the patients, within them. When recently expelled, and placed in tepid water, it may be seen to shorten itself; nay, portions protruding many feet from the anus have been known to draw themselves back again. This kind of worm is more frequent in adults than in children : yet it is some- times met with even in the fcetus. It is exceedingly common in dogs. It has been badly named ver solitaire, for it is not always single. It is not only found in com- pany with different worms, but also with others of its own species. Its natural place of abode is the small intestines : but it extends sometimes into the large, and sometimes into the stomach. Vandoverer declares that after an emetic one of his patients vomited forty Dutch ells of the worm, and might have got rid of more "if he had not been afraid of puking out all his guts, and for that reason bit the worm off." The taenia lata, or broad tape-worm, has often been confounded with the taenia solium; yet there are striking differences between them; respecting which, for all practical purposes, it is enough to say that the heads (as viewed through a micro- scope) are very dissimilar; that the joints of the tasnia lata are shorter and broader, and adhere together in a different manner ; and that the pores leading to the oviducts are situated not on the edge of each joint, but in the centre of its fiat surface. This variety is not so easily broken across as the former; and therefore its segments are less liable to be voided in a separate form. It is probably shorter also than the tasnia sohum. Fifteen feet have been supposed its average length. Marvellous stories, however, are told on this head. Boerhaave declares that he effected the expulsion of one, which Avas 300 ells long, from the bowels of a Russian. The geographical distribution of these two species of taenia forms a curious part of their history, and throws some light upon the doubtful question of their origin. In England, Holland, and Germany, the taenia solium is common, and the taenia lata very rare. In Russia, Poland, and Switzerland, it is just the reverse ; the taenia lata prevails ; the taenia solium is seldom seen ; while in France the one species is nearly as fre(|uenl as the other. HYDATIDS. 829 LECTURE LXXIY. Entozoa continued. Hydatids. Trichina Spiralis. The Guinea-Worm. Stron- gidiis Gigas. Origin of Entozoa. Question of Spontaneous Generation. General symptoms of the presence of Intestinal Worms. Particular symp- toms, and remedies, of the common Round Worm, of Thread-worms, of Tape- Worms. At our last meeting I gave a summary description, sufficient, however, for our purposes as medical practitioners, of the five kinds of vermes which are most com- mon in the human intestinal canal. There are yet a few more of these entozoa which are curious and interesting enough to deserve a brief notice. Hydatids — animals like bags or bladders of water — are of very frequent occur- rence in various parts of the body. They are also called acephalo cysts, headless bags. These are not to be confounded with enlarged Graafian or other vesicles, nor with morbid serous cysts in general. They look like, or rather they are, spherical sacs having one aperture only, and containing a thin colourless liquid. They are usually found congregated, sometimes in vast numbers, w^ithin a large cavity or cyst, to which they are not attached. This is a consequence of the pecuHar manner in which the animals are propagated. The wall of the cyst is laminated, and the youncr hydatids bud forth from between its layers. In the species which most commonly infests the human frame, they are born into the cavity of the parent : in some other species they are detached externally. We find therefore a parent bag, full of other smaller bags ; which, again, are pregnant, as it were, with their own offspring, the grandchildren of the primary cyst : and so on, somewhat after the manner of a nest of pill-boxes. Minute in their origin, these parasites may thus increase and multiply till the original cyst attains an immense size, and at length destroys life by its bulk and pressure. Of course the immediate consequences of such pressure will depend greatly upon the parts occupied by the hydatids. You may readily imagine what kind of symptoms are likely to ensue, when they are lodged within the abdomen, within the less yielding thorax, within the unyielding skull. They are more com- mon in the liver than in any other single organ. I lately mentioned the case of a woman, Harriet Baldwin, who died in the Middlesex Hospital, and whose liver con- tained thousands of these globular bodies. The enlarged gland had completely sealed up, by its pressure, a portion of the inferior cava. We can seldom tell that hydatids exist in the body until we see them; nor, if we knew of their presence, could we propose any rational method of cure. It has been fancied that a galvanic current, or an electric shock, passed through the organ con- taining' these creatures, might kill them, and so at least prevent their increase ; or that they might be poisoned by drugs that are not seriously prejudicial to man, such as mercury or iodine. But these are mere dreams of our baffled art. They some- limes open a way for themselves to the surface, and escape through an ulcerated outlet : and sometimes they are let out, to the surprise perhaps of the operator, who only knew that he was dealing with an abscess which required puncturing. Mr. Arnott put a lancet into a fluctuating tumour in the epigastrium of one of my patients; very offensive pus issued, with the shriveled skins of sundry defunct hydatids. The cyst was situated, I believe, in the liver. Although the orifice was slow to heal, the patient ultimately got well. There are single cyst-like bodies, with short retractile necks, bearing the generic, name of cysticercus. One species of this kind, the cysticercus cellulosus, inhabits the interfascicular areolar tissue of the muscles. It is rare in the human subject, but frequent in the pig ; giving rise to that condition of the muscles which is famiharly known as measly pork. This is one of the internal parasites with which the organ of vision is liable to be infested. A most remarkable instance occurred a few years 3u 830 TRICHINA SPIRALIS. ago, in Glasgow. In the eye of a child, who had suffered repeated attacks of ophthal- mia, Mr. Logan discovered one day, to his extreme astonishment, a semi-transparent body, about two lines in diameter, fk)ating unattached in the anterior chamber. It seemed almost perfectly spherical, except that from its lower edge there proceeded a slender process, of a white colour, with a shghtly bulbous extremity, which appeared to be heavier than the globular part, for it was always turned downwards. This head or neck was seen to project or elongate itself from time to time ; and occasion- ally it was drawn up and completely hidden in the cystic portion. When the patient sat still, in a moderate light, the animal covered the two lower thirds of the pupil. " Watching it carefully (says the gentleman who has recorded the case), its cystic portion was seen to become more or less spherical, and then to assume a flattened form ; while its head I saw at one moment thrust suddenly down to the bottom of the anterior chamber, and at the next drawn up so completely as to be scarcely visible." The child's head was now turned gently back, and instantly the hydatid revolved through the aqueous humour, so that its head feli to the upper edge of the cornea, now the more depending part. Upon the child again leaning forwards, it settled, like a little balloon, in its former position ; preventing the patient from seeing objects directly before her. The animal was carefully watched for three weeks ; and no other change was noticed than a slight increase in the bulk of its cystic portion. In six weeks it had evidently grown bigger, the eye became injected, and the iris less free in its move- ments ; and pain ensued. Extraction of the hydatid was attempted ; but the patient was unruly ; the lens was forced out, and the animal ruptured and expelled in shreds : the iris became entangled in the wound of the cornea, and vision in that eye was spoiled. There is a very singular microscopic parasite, the trichina spiralis, dwelling in myriads, sometimes, in the rhuscles of the living human body. It was first de- scribed, I believe, by Mr. Hilton, of Guy's Hospital, and afterwards more fully by Professor Owen, in 1835. Mr. Wormald, the Demonstrator of Anatomy at St. Bartholomew's Hospital, sent to that gentleman a portion of human muscle, which presented a singular speckled appearance, as if it were mouldy. Mr. Owen found that each speck was a shuttle-shaped cyst, containing a very minute cylindrical worm, coiled up in two, or two and a half, spiral turns. The worm measures, when unrolled, no more than g^th of an inch in length, and T^Joth of an inch in diameter ; and of course requires, for a satisfactory examination, to be seen through a microscope. The longer axis of the containing cyst hes between, and parallel to, the fibres of the muscle. Fourteen similar instances have since come to Mr. Owen's knowledge. This is a very strange kind of parasite. One would imagine that the presence ci innumerable living beings, in or between the muscular fibres, would be likely to give rise to symptoms. We might expect pain, or muscular debility, or embarrassed movements ; yet no indication of the presence of these worms seems to have been afforded in those instances in which the condition of the subject in whom they were found was known, during life. The principal points that have hitherto been made out appear to be the following : — 1. The muscles thus beset with parasites are the voluntary muscles : and those which lie superficially are fuller of the worm than the deeper seated. The pecto- ralis major, latissiraus dorsi, and other large flat muscles, usually present them in great abundance. They have been detected in the muscles of the eye : and everi in those belonging to the little bones of the ear, and of whose action we are wholly unconscious. They occur also in the diaphragm, in the muscles of the tongue and of the larynx, in those of the soft palate, in the constrictors of the pharynx, in the levator ani, in the external sphincter ani, and in the muscles of the urethra. They have not yet been seen in the muscular tunic of the stomach and intestines, in the detrusor urinas, or in the heart. Mr. Ow-en makes this interesting remark — that all the muscles infested by the trichina are characterized by the striated appearance of '.heir ultimate fascicuU : whereas the muscles of organic life, which the animal does THE GUINEA-WORM. 831 not inhabit, have, with the exception of the heart, smooth fibres, not grouped into fasciculi, but united reticularly. 2. It appears, also, from what has been hitherto observed of these entozoa, that their presence in the body is unconnected with age, sex, or any particular form of disease. They have been concomitant with cancer of the penis ; tubercles of the lungs ; exhaustion of the vital powers by extensive ulceration of the leg; fever, com- bined with pulmonary phthisis ; aneurism of the aorta ; sudden depression or col- lapse after a comminuted fracture of the humerus ; diarrhoea. They have also been met with in the muscles of a man who, while in the apparent enjoyment of robust health, was killed by a fracture of the skull. The Filaria Medinensis — Dracuncidus — or Guinea-worm — has its residence in the subcutaneous areolar tissue. It is a long, slender, round, uniform animal, like a fiddle-string, or a piece of bobbin ; as you may see in the specimens before you. Its length varies from five or six inches to twice as many feet. Men's lower limbs, their feet and legs, are the parts most commonly possessed by this worm ; but it occurs also in the scrotum, in the parietes of the belly, in the arms, beneath the con- junctiva of the eye, and in almost every superficial situation. It is sometimes soli- tary ; but several may co-exist or succeed each other in the same individual ; nine or Ion perhaps. A Dr. Marrudri, a friend of the celebrated Clot Bey, had suffered from twenty-eight of them in succession. This entozoon is epidemic in the hot intertropical regions ; in Asia and Africa ; upon the coast of Guinea, whence its trivial name. It sometimes abounds after the manner of an epidemic. Sir James M'Grigor tells us that the 86th and 88th regi- ments, stationed at Bombay, were much plagued by this pest. The 86th was free from it upon entering the fort, in September, 1799 ; and so continued till the setting in of the monsoon in 1800. In the course of the monsoon nearly 300 of the men were attacked. The 88th regiment relieved the 86th. No case of Guinea-worm appeared among them for nearly a month after their coming into the barracks at Bombay, in October, 1800. In the latter end of November, they embarked for the Egyptian expedition ; and in the course of the voyage in one ship alone 199 men out of 360 were crippled and laid up with this loathsome disease. It was thought to be infectious. The artillery-men, who were kept separate, escaped. Of 181 instances, of which Sir James M'Grigor gives a tabular account, the feet were the parts affected in 121. These animals sometimes remain for a long while in the areolar tissue without pro- ducing inconvenience, and therefore without betraying their presence. Hence they are sometimes brought over to this country. The great navigator, Dampier, had no symptom of a Guinea-worm which he carried about with him, until about half a year after he left the place in which he contracted it. Sometimes the parasite is quiet and harmless for a still longer period ; in one recorded instance it was latent and dormant for three years. The symptoms which do at length arise are the following : — itching of the part affected ; a sensation as if there were something creeping under the skin ; sometimes a cord-like ridge can be felt in the track of the worm ; at length a vesicle, or a pus- tule, or a little boil forms, from which, when it breaks, the head of the animal pro- trudes. This process is often attended with fever ; and in certain parts of the body the local suffering is considerable : the areolar tissue sloughs ; and sometimes danger- ous hemorrhage occurs. The only treatment which these cases appear to admit of, is the gradual and care- ful extraction of the worm. Lest that part of it which already protrudes should recede, or be broken, it is gently wound, day by day, round a small stick, or a little roll of adhesive plaster; pains being taken not to pull upon it so much as to risk its being torn asunder. The roll is protected by a bandage. Whenever, by accident, the animal is broken, very serious consequences are sai'' to ensue ; violent inflam- mation of the part, abscesses and sinuses and high irritative fever. This mischief is ascribed by some to the presence of dead animal matter, by others, of young fila riae, in the subcutaneous tissue : for I should have mentioned that the Guinea-worn; 832 STRONGULUS GIGAS. k viviparous ; and although neither digestive organs nor generative organs have yet been discovered in its structure, it is sometimes found stuffed internally with a count- less offspring. The extraction is tedious work. Where, indeed, the areolar tissue is very loose, as in the scrotum, the worm is occasionally drawn out at the first attempt ; but the process sometimes occupies weeks ; and its average period appears to be not less than ten days. When the course of the animal is quite superficial and obvious, the natives are accustomed to make an incision in the skin, at about the middle point, and to pull the worm through from both ends. When once it is out, the parts presently heal. Ail other medication (and much has been tried) has been found useless; except, perhaps, the administration of assafetida ; and that not as a means of cure, but of prevention. It is said that the Brahmins in India, who are in the constant habit of using this drug, are exempt from attacks of the dracunculus. Cleanliness was also found, in the army, to be a considerable protection. There is a species of filaria peculiar to the eye, and another to the bronchial glands ; but these are extremely rare. The urinary organs have their parasites also ; of which I shall specify but one, and that chiefly on account of its strange lurking-place, and remarkable size. I alluded to a species of strongle which sometimes occupies the human kidney, and which is no uncommon tenant of the same organ in various animals ; the horse, the bull, the dog, the wolf, the polecat, and the otter. In the human subject, its length varies between five inches and a yard, and it is sometimes half an inch in diameter. There is a specimen nearly of that size in the Hunterian museum. It may well be called the giant strongle, strongiilus gigas. Fancy a creature as big as a snake coiled up in one's kidney. It gives rise to no distinctive symptoms, although, as you may suppose, it causes much renal distress ; hematuria, retention of urine, and great suf- fering in its passage out of the body, either through the natural urinary channels, or by abscess and ulceration through the back. With respect to some, at least, of the parasitic animals that I have been describing, those I mean which are found shut up in close chambers, our first feeling is that of wonder how they came there. Into all parts from which a road is open to the exter- nal surface, we can conceive that living creatures may enter, or their eggs be carried. But how can either animals or ova find their way unperceived into the substance of the liver and of the voluntary muscles, into the eye, into the brain ? The whole matter is obscure, yet interesting. With respect to the common hydatids, it has been conjectured — and the conjecture does not seem improbable — that they are not parasites, nor distinct animals in any sense ; but merely certain of those primitive nucleated cells — from which the micro- scope asserts that all the varied tissues of the body are originally formed — rendered gigantic and monstrous by some erring or morbid action of the vital forces. Except in size, the cell and the hydatid are declared to be alike: alike in shape, alike in the mode of their growth and muhiplication. But this view of the matter, granting it to be the true one, does not relieve our difficulty ; for, within these very hydatids, distinct living animals have been found : parasites of the second order, entozoa of an entozoon, if the hydatid be itself a separate animal — tenants of a formation-cell, if the hydatid be only an extravagant development of the primary corporeal structure. Within several of the transparent hydatids which were taken from the liver of the woman Baldwin, a number of small, opaque, white grains, were visible. These were examined by Mr. Tomes and myself, under the lens of his powerful microscope. They were plainly minute animals: baglike, with an orifice or mouth which, in some instances, protruded a little from the bag — in others, was evidently contracted and drawn inwards. Around this orifice was arranged a circlet of small, flat, spear- shaped rays, somewhat like a Vandyke collar. Many of these rays, or spines as they have been called, were detached, and lying loose in the surrounding hquid. Being very ill-informed in this department of natural history, I paid less attention to these creatures than they deserved ; fancying, indeed, that they might be common and well-known, or rather that they were juvenile hydatids. I have become aware ORIGIN OF ENTOZOA. 833 of my mistake through perusing a paper, by Mr. Curling, in the twenty-third volume of the Medico-Cliirur girnl Transactions, where he more minutely describes pre- cisely similar phenomena. Mr. Curling shows that these included animalcules are parasitic vermin which infest a peculiar species of hydatid, called the Echiaocuccus Hominis. Later opinions assert that what we call the ki/datids, is nothing more than a nest, or habitation, formed by or for the small indwellers. Now, whatever hypothesis we may adopt respecting the nature of hydatids them- selves, the puzzling question still remains, whence originated the living beings inclosed within them ? How got they thither? It was the opinion of Linnaeus, and of other natural philosophers of his time, that the intestinal worms were really terrestrial or aquatic animals which had been acci- dentally swallowed, either while young and small, or in the antecedent state of ova. It was even pretended that these animals had been recognised and detected out of the body, in stagnant waters. But later inquirers, especially Bremser and Rudolphi, have completely disproved this notion. After dedicating twelve years of his life to the observation and study of entozoa, Bremser was satisfied that no creatures iden- tical in structure v^ith the intestinal worms are ever met with out of the body, except such as have come from the intestines of man, or of some other animal ; and, conversely, that no terrestrial or aquatic worms are ever found living within the bodies of men or of animals, unless they have been directly or plainly received from without. But, then, is it not possible that, as Boerhaave supposed, aquatic or terrestrial rep- tiles, casually entering the bod}'' from without, being placed under entirely new and unnatural conditions, may have attained a monstrous growth, and undergone meta- morphoses such as we know that some of the lower animals, by change of circum- stance, do undergo ; as the tadpole becomes a frog, the maggot a butterfly ? To this theory there are strontr grounds of objection. First, there is no ascertained relation (as in the other cases) between the structure of intestinal worms, and of ani- mals having an independent existence out of the body ; and they are never caught (as they would surely sometimes be) in the transition state — the intermediate condi- tion. Secondly, opposed to this "accidental" hypothesis are also the facts that cer- tain species of worms infest certain species of animals only : that in the same animal, different species of worms occupy (as we have seen) special parts of the alimentary canal ; have each their peculiar habitat : that worms and animals of external origin mostly die as soon as they are received into the digestive organs, while the true mtestinal worms perish whenever they are delivered therefrom. Thirdly, the cir- cumstances that these worms not only live, but breed within the human bowels, and that they are met with even in the intestines of the unborn foetus, are very adverse to this theory of an accidental error loci. But, to give up the notion of a metamorphosis, may not intestinal worms spring from specific germs or ova introduced from without, not casually, but in accordance with a natural law: germs or ova which find in the interior of living bodies the only conditions that admit of their development, the only soil in which they are capable of germinating, the only nest in which they can be hatched ? I confess that si]ch is my own belief. We have something like this, at least, in that common affec- tion of horses called the " bots." A species of oestrus, or gadfl\', deposits its egq-s upon the animal's hide, where they cause, I presume, some irritation, which induces the horse to lick that part with his tongue. The eggs are thus conveyed into the mouth, whence they reach the stomach. There they are converted into larvas, and affix themselves to the parietes of the stomach. At length, when they are ready to undergo their final metamorphosis, they are detached from the interior of the sto- mach, pass along with the food and feces through the intestines, and are ejected fron) the rectum with the dung. Why, it is asked, may not similar phenomena take place in the human body ' There can be no doubt that we every day swallow, inadvertently, numerous ova, of /arious kinds. It is supposable enough that sometimes the digestive organs may, ud sometimes they may not, have the power of decomposing or expelling the^se ova. It is quite certain that what are generally called spurious worms may have that mode of origin in the body. Thus, Ft. Eiliotson states that he had once a patient, 53 ^ 3u2 834 SPONTANEOUS GENERATION. an infant, who discharo-ed from the bowels a dozen live larvge, or maggots, of the common fly. The child had eaten part of a high pheasant some months before. There was, in that case, this instructive circumstance. The infant had been sufTerinor under a chronic cough, but as soon as those larvae were got rid of, the cough ceased. Dr. Elliotson says that he saw them in the napkin moving about in the fecal matter, iust as they miglit have done if they had never been in the child's body. The same physician tells us that he has twice known, in two different patients of his, a living caterpillar to be discharged from the intestines. One of the patients was a Avoman who had been in the habit of eating cabbage stalks while she was washing them for the pot. The moth lays its eggs on cabbages, and she no doubt had swallowed some of them, and one had hatched within her. In the ninth volume of Dr. Duncan's Medical Commentaries is a precisely similar case. A boy, after a dose or two of calomel and jalap, discharged from the rectum very many caterpillars, all alive, and full of activity. He had been in the habit, when in the garden, of eating young cabbage leaves. Till this habit began he had enjoyed good health. While the animals were within his bowels he suffered severely ; had locked-jaw ; and fell into a state resembhng coma. Upon their expulsion he recovered perfectly. Centipedes have in like manner been vomited, and voided from the bowels. But the most won- derful instance of this kind that ever was heard of, is related by Dr. Pickells in the Transactions of the King and Queen'' s College of Physicians in Ireland. A young woman of melancholic disposition and chlorolic appearance, had been in the daily habit, from some superstitious motive, of drinking water mixed u-ith clay taken from the graves of two priests who lived and died in the odour of sanctity. In this way she probably imbibed the ova of the insects which subsequently issued from her body. In the course of about three years and a quarter, she discharged, partly by vomiting, but chiefly per anian, upwards of 2000 beetles, and their larvae, most of them alive. Dr. Pickells counted more than 1300. Larvs, and pupfe, and perfect insects, all came forth simultaneously. Some of them ran off, as soon as they were vomited, into holes in the floor ; and two large winged insects were so lively and vigorous as immediately to fly away. These strange births were preceded and at- tended by a complicated and distressing train of symptoms ; a gnawing, and sense of something creeping at the pit of the stomach, vomiting of blood, amenorrhoea, hysterical convulsions, headache, retention of urine, and sometimes a decree of men- tal derangement. She was at length freed from this disgusting malady by large doses of the oil of turpentine. These spurious worms differ from the true intestinal parasites in this — that the human alimentary canal is not their only, but their accidental and unusual nidus Nevertheless, their occasional presence, alive, in that place, adds to the probability that some of the entozoa may be originally ectozoa. The main difficulty, however, respects those animals which occupy shut cavities within us, or are embedded in our solid organs : and this difficulty forms one avowed ground of the theory of equivocal generation : which means the spontaneous pro- duction of living creatures, independently of any germ, or egg^, or parent. The vul- gar suppose that dirt engenders fleas, that maggots result from the putrefaction of flesh, that eels arise, of themselves, in and out of mud. In other words, they infer the spontaneous origin of those creatures, of which they cannot or do not trace the procreation by pre-existing parents: and philosophers and men of science have done ihe same. They will not believe that which they cannot see. Now this doctrine of equivocal generation shocks, I confess, my mind, and offends my reason. If well founded, it strikes at the root of that great argument of Natural Theology, which deduces the existence of a First Intelligent Cause, from the marks of adaptation, de- sign, and contrivance, so manifest throughout the visible universe. Observe the demand which this doctrine makes upon our faith. In defiance of all experience and analogy m respect to creatures which our finite senses are competent to examine, it calls upon us to believe that living beings, of complex and intricate, yet definite and harmonious structure ; provided with a digestive apparatus, with instruments of locomotion, with generative organs ; of various species ; in many instances of sepa- rate yet answcrmg sexes ; that not one or two of these beings, nor a pair or two, but I SPONTANEOUS GENERATION. 835 beings and pairs innumerable, are daily formed by the casual concourse of •' organic molecules." The obscurity that hangs over the origin of the entozoa is not indeed the only, nor, I think, the chief ground upon which the notion of_ spontaneous gene- ration rests. You are probably aware that minute animalcules, so minute that most of them cannot be seen without a microscope, soon become abundant in water wherein vegetable or animal matters have been dissolved by infusion. Such animalcules are therefore called Infusoria. How do they come there ? There are two suppositions open to us. One is, that they are formed by the fortuitous union of organic atoms contained in the infusion. The other is, that they proceed from ova or germs exist- ing in the liquid, or floating always in the atmosphere, and ready to quicken when- ever they hght upon their proper element. That the ova of animals which are themselves visible only by the aid of a microscope, should be absolutely invisible by us, is not surprising. We may conclude that the latter supposition is the most true, if we can show that when these ova or germs are excluded, all the other conditions of the production of infusoria being present, no animalcules appear. Now Spallan- zani long ago found, by careful trials, that no animalcules were discoverable when the access of air to the infusion was completely prevented. But it has been objected to his experiments, that the presence of atmospheric air may be one of the essential conditions upon which the requisite combination of the organic molecules depends. Air, solar light and heat, and organic matters in solution being given — does animal (or even vegetable) life ever result? That is the question. The experimentum crucis has been made, and has answered " No," as I lately learned from one of Pro- fessor Owen's admirable introductory lectures ; by whom, I am glad to find, this uncomfortable doctrine of equivocal generation is strongly discountenanced. The experiment to which I refer was conducted by M. Schulze, of Berlin. I will read 5'^ou his own account of it, as I find it recorded in the Edinburgh New Philosophical Journal. "The difficulty to overcome consisted in the necessity of being assured, first, that at the beginning of the experiment there was no animal or germ capable of develop- ment in the infusion ; and secondly, that the admitted air contained nothing of the kind. For this purpose I filled a glass flask half fall of distilled water, in which I mixed various animal and vegetable substances ; I then closed it with a good cork, through which I passed two glass tubes bent at right angles, the whole being air tight. It was next placed in a sand-bath, and heated until the water boiled violently and thus all parts had reached a temperature of 212°. While the watery vapour was escaping by the glass tubes, I fastened at each end an apparatus which chemists employ for collecting carbonic acid ; that to the left was filled with concentrated sul- phuric acid, and the other with a solution of potash. By means of the boiling heat, everything living, and all germs in the flasks or in the tubes, were destroyed; and all access was cut off by the sulphuric acid on the one side, and by the potash on the other. I placed this easily moved apparatus before my window, where it was exposed to the action of light, and also (as 1 performed my experiment during the summer) to that of heat. At the same time I placed near it an open vessel, with the same substances that had been introduced into the flask, and also after having sub- jected them to a boiling temperature. In order now to renew constantly the air within the flask, I sucked with my mouth, several times a day, the open end of the apparatus filled with solution of potash ; by which process the air entered my mouth from the flask through the caustic liquid, and the atmospheric air from without entered the flask through the sulphuric acid. The air was of course not at all altered in its composition by passing through the sulphuric acid in the flask, but if sufficient lime was allowed for the passage, afl the portions of fiving matter, or of matter capable of becoming animated, were taken up by the sulphuric acid and destroyed. From the 28lh of May till the beginning of August, I continued uninterruptedly the renewal of the air in the flask, without being able, by the aid of the microscope, to perceire any hving animal or vegetable substance, although durijBg the whole of the time 1 made my observations almost daily on the edge of the liquid : and when at last I separated the difl<3rent parts of the apparatus, 7 could not find in the whole hquid the slightest trace of infusoria, of confervas, or of mould. But aU three presented thera 836 INTESTINAL WORMS. selves in great abundance a few daj^s after I had left the flask standing open. The vessel which I placed near the apparatus contained on the following day, vibriones and monads, to which were soon added larger polygastric infusoria, and afterwards rotatorise." This experiment confirms the belief which various other facts had suggested — that the different kinds of entozoa are not parentless animals, and that they somehow find their way into the body they inhabit, from without. The lowest of the infusoria are of fixed and determinate species ; and Ehrenberg states that even the minutest monads possess a comphcated organization. It may be asked, concerning both them and the entozoa, why, if they ever arise spontaneously, should they be furnished with a generative apparatus ? Again, some of the entozoa abound in certain places, and strangers coming to those places appear to contract them there. The dracun- culus was thought by the soldiers in India to be communicable from person to per- son, as the itch insect, and the chigoe, to both of which it has some analogy, cer- tainly are. The infant filaria probably creeps in through the skin without causing any noticeable pain. Even that monster among the entozoa, the tape-worm, invades the bodies of those persons who visit the countries to which it belongs. I told you before, that when tape-worm occurs in Germany, it is always the tasnia solium ; when in Switzerland, almost always the tsenia lata. Now the celebrated Soemmer- ing was afflicted by one of these beasts ; and he was by birth a German : yet the worm that he voided was of the foreign species, the tasnia lata. He had resided, however, for some time in Switzerland ; and there, we can scarcely doubt, he caught the ovum, or the young one, of the parasitic animal. Mr. Abernethy once told me the following curious story : — A shepherd had to drive a flock of healthy sheep to a distant part of the country. The journey occupied two or three days. On the road one of the animals broke its leg, and was carried the rest of the way on horseback. All the flock, except this hurt individual, was turned for one night into a marshy pas- ture. The broken limb was set, and the patient got well ; and was the only one of the whole flock that did not subsequently become affected with the rot; the only one that escaped having flukes in its liver. Is it not presumable that the ova of these parasites were swallowed with the herbage cropped by the sheep in the damp mea- doAV ? The germs of the entozoa which dwell in closed chambers, and within the solid viscera of the body, are probably carried thither by the blood. Upon the whole, we may reject the hypothesis of equivocal generation, and fall back upon the Harveian axiom, taken in its most extended sense, of omne vivum ex ovo. If I have digressed somewhat in order to set before you the grounds of my own beHef in this matter, the interest and importance of the subject must be my excuse. What I have further to say will relate exclusively to the intestinal worms of the human body : their predisposing causes ; the symptoms they occasion ; and the modes of getting rid of them. However much we may be in the dark as to the exact mode in which these para- sites reach their habitations, we do know something of the circumstances that appear to favour their production and muhiplication. They certainly prevail most in per- sons who, from whatever cause, are weak and unhealthy ; and particularly in scro- fulous children. There are, however, many exceptions to this : they are not uncom- mon in individuals who are robust and vigorous. Intestinal worms, of all kinds, are more abundant in some situations than in others ; especially in places that are low and moist. They are accordingly very frequent in Holland, and in some parts of Switzerland. Wherever there is much debility of the digestive organs — in k'uco phlegmatic habits — in persons who secrete habitualh'' a large quantity of mucus — worms are apt to congregate. The children of the Negroes in the West Indies are wonderfully infested by them. It more concerns us to inquire into the general symptoms, through which the existence of worms in the alimentary canal may be ascertained, or suspected- Those symptoms are very multifarious; and, for the most part, very e9ul vocal. 1 know of none that can be reckoned certain or pathognomonic, except the actual appearance of one or more of the animals, or of portions of them, in the exc/emcnt'i INTESTINAL WORMS. 837 of the body. Yet that they do give rise to a variety of morbid phenomena — which morbid phenomena are, however, Uable to be produced by other causes also — there can be no question. The most common of these are well known to all nurses and old women ; such as colicky pains, and swelling of the belly; picking of the nose, in consequence of itching and irritation there ; itching of the fundament ; a foul breath ; grinding of the teeth during sleep ; a variable and capricious appetite, sometimes voracious and insatiable, sometimes none at all; and irregular bowels. Worms sometimes occasion strange, and even severe, nervous symptoms, explain- able upon the principle of the reflex office of the spinal cord. We conclude that the symptoms are owing to worms in such cases, because they cease when the crea- tures are got rid of. Some examples of this I have already noticed. Thus, Dr. EUiotson's infant patient lost a chronic cough upon the expulsion of the live larvae of the common fly. Bremser gives a very similar case. A child of eleven, afflicted with taenia, had a troublesome dry cough. It was observed that the cough was sus- pended for two months, just after a very large portion of the worm had been brought away by anthelmintic medicines. This kind of coincidence happened, not once only, but three or four times ; and at length, when the whole of the worm had come away, the cough was permanently cured. I mentioned, some time ago, the frequent association of intestinal worms with epilepsy, which is then of the eccentric form: and I stated that a certain nobleman voided some kind of worm (a tape-worm, I think) from his bowels, and was thenceforward free from epileptic fits, under which he had long laboured. A curious circumstance, illustrating the fact that irritation of the mucous membrane of the alimentary tube may affect distant parts, is quoted by Dr., Joy from Albinus. A soldier received a wound, which led to the formation of an unnatural anus, in front of the abdomen, and in the track of the colon. Through this opening the mucous membrane of the bowel sometimes protruded ; and when- ever it was out, and exposed to the contact of cool air, the patient began to cough ; and continued to do so till the mucous surface was warm again. Partial palsy, amaurosis, aphonia, and other nervous symptoms, occasionally depend upon the pre- sence of worms in the intestines. [Dr. Schleifer, in the Austrian Weekly Journal of Medicine, relates the case of a child, nine years of age, who became dumb, after suffering in early life from cutaneous eruptions, engorgement of the glands, &.c. The loss of hearing was attributed chiefly to a fall, and treated accordingly. The child became emaciated, pale, with a dark leaden appearance of the contour of the eyes. The tongue was white and loaded, the breath offensive, and the abdomen tumid and hard. The muscles of the face were in constant motion, and the patient moaned incessantly. Dr. S. suspected the presence of worms, and treated the patient accord- ingly. In three weeks, eighty-seven lumbi-ici were discharged, and, during five weeks, im- mense quantities of ascarides. At the end of the sixth week, the child had recovered his hearing and speech. In the Journal of Medicine and Surgery of Paris, for April, 1844, a case is quoted, from the Gazette Medicales of Dijon, of a young man, nineteen years of age, who was attacked with all the symptoms of acute pleurisy: chill, followed by fever; severe pain in the left side; difficult, jerking respiration ; paroxysms of dry cough, which occasioned the patient to scream out, &c. ; all of which symptoms promptly disappeared after the discharge of seven- ty-five lunibrici. — C] But let us examine into the symptoms which are more or less proper to par- ticular species of intestinal entozoa ; and into the treatment which they severally require. A variety of symptoms are ascribed to the ascaris lumbricbidcs. Dr. Bail lie says that the most characteristic are a tumid belly, enmciated extremities, offensive breath, and a deranged appetite. To these may be added colicky pains of the abdomen. When these animals get out of the small intestines, and ascend into the stomach or oesophagus, they may occasion pain, nausea, vomiting, even convulsions. They have caused death, as I mentioned before, by crawling into the biliary ducts, and into the chink of the glottis. Sometimes, on the other hand, they emerge unex. pectedlj, from persons who had received no previous notice of their prcsejir« within. 838 THREAD-WORBIS — TAPE-WORMS. This, the commonest parasitic tenant of the human bowels, is also a troublesome one to eject. A great variety of anthelmintics have been cried up as successful against it; but brisk purgatives, and bitter medicines in the intervals, have the best evidence in their favour. These animals seem not to like steel; and my own plan of assailing them is that of purging the patient from time to time by calomel and jalap, and administering, three times a day, some preparation of iron ; the sulphate, or the muriated tincture. I believe that most of the patent worm-medicines consist of mer- cury, jalap, and scammon}^ given in strong doses. The fetid drugs, assafetida, gal- banum, valerian, are often used. Cowhage, also, the dolichos pruriens, which is supposed to tease the skin of the parasite no less than that of the human worm; and tin-filings, which are thought to bruise or lacerate the offenders, are favourite reme- dies with some persons. I have never tried them. The oil of turpentine I have not found so successful in expelling this species of ascaris as I shall presently show you that it is against the tape-worm. Croton oil has been much commended, either given by the mouth or rubbed upon the abdomen. Common salt, coloured by cochineal, and exhibited every morning in half-drachm doses, was found by Dr. Rush to be very successful. The symptoms produced by the ascaris vernncvhms are itching and irritation about the anus, especially in the evening, and aggravated by the warmth of the bed, and by whatever overheats the body. I would refer j'ou to a paper by Dr. Heber- den on this subject, in the first volume of the Medical Transactions. The case he describes is the more valuable, as it was related to him by a physician who \\-as all his life plagued by these thread-worms. Generally, however, tney infest children; and become fewer, and at length disappear, as childhood passes into youth. When they do accompany life through its several stages, although they are a source of serious annoyance and suffering, they do not appear to shorten the duration of the patient's existence. To introduce at one end of a tube, several yards long, substances which are in- tended to act upon animals that live quite at its other end, would be a very round- about course. Whether a purgative efiiect, or a specified destructive effect, be the object, enemata are preferable to medicines given by the mouth. Bitters offend and destroy these little worms. I have relieved many patients from their tormentors by prescribing simply the infusion of quassia as an injection. Tobacco clysters are praised ; but the remedy is a hazardous one. Dr. Darwall says of an enema com- posed of half an ounce of the muriated tincture of iron mixed with half a pint of water, " there are few cases so obstinate that this will not suffice to overcome." Lime- water, injected into the rectum, forms another effectual remedy for ascarides, and (as pharmacologists love to speak) a rather elegant one. Thread-worms may be scooped out of the rectum with the finger. Old women fish for them with a piece of fat meat, or a candle, wherewith the entangled worms are drawn out of the bowel. Perhaps, in troublesome cases, the plan laid down by Martinet is as good as any. He recommends three successive injections: the first meiely purgative ; the second specific (common salt in solution, cold vinegar and water, lime-water, some bitter infusion) ; the third, oleaginous and soothing. Oil often alla3's the itching. This teazing symptom may sometimes be quieted by ap- plying a towel, wetted with cold water, to the fundament, while in bed. With some means of this kind for expelling the worms, appropriate measures should be combined for improving the general health. I know of no signs by which the presence of the tricocephalus dispar is revealed; and I am equally ignorant of any remedies for it. That a tapr-icorm is within, we know when the joints of it are voided. Number- less symptoms have been ascribed to this huge internal parasite. The following are probably the most distinctive. Uneasy feelings in the epigastrium, which often abate or arc removed by eating ; the appetite generally craving, but sometimes baa . itching TAPE-WORMS. 839 of the nose and of the anus ; nausea; colic ; giddiness ; a sour breath. Less fre- quently loud borborigmi occur; and sometimes convulsions. Louis has watched and recorded, with his accustomed minuteness, the symptoms of ten cases in the wards of La Charite. Seven of the patients were males, and three females. The youngest was a boy of twelve, the son of another of the patients ; the oldest was seventy-four. Most of them were in comfortable circumstances, and had been habitually well fed. The greater number of them had for some time been passing fragments of tape-worm, with their stools, in their clothes, and in their beds. In one of the cases the articulations had been twice only detected in the stools, and each time upon the operation of a purgative. In all the patients but two, the other symptoms commenced when the evacuation of the fragments commenced. This renders it probable that the worms begin to give annoyance when they get into the large intestine. The temporary relief that results from the expulsion of portions of the animal strengthens that supposition. The case is mentioned in the Aledico-Chinirgical Journal of a man w^ho was in the habit of freeing himself from large fragments of tape-worm by introducing a slick into his rectum, and twisting the worm round till it broke. The chief symptoms observed in Louis's cases were colicky pains of the abdo- men ; itching of the anus, and of the end of the nose ; uneasiness in the epigastrium ; and deranged dicestion and appefite. Pain in the abdomen occurred in all the instances : but it differed, in different cases, both in degree and in kind. It was intermittent ; and mostly felt towards the flanks. There was itching at the margin of the anus in seven of the ten cases ; itching of the nose in four. With one exception, only, itching was present in one or the other, or in both of these situations. The appetite was craving in one patient; unaffected in four; variable or bad in all the rest. In all, slight emaciation was observed. In all, the pupil of the ej^e was of its natural dimensions. This is noticed, because dilatation of the pupil has been set down as one of the symptoms of tsenia. Louis thinks that the following combination of symptoms indicates with tolerable certainty the presence of some kind of worm in the intestines. Pain in the belly; colic of various degrees of intensity, unaccompanied by diarrhoea; itching about the anus, and at the end of the nose. If pains in the limbs, lassitude, and. nervous symp- toms exist also, the diagnosis is strengthened. We have a very effectual remedy for tsenia — at any rate for the tape-worm of this country — in oil of turpentine, given in large doses. The anthelmintic virtues of this substance were not generally known till a paper on the subject, by Dr. Fenwick, of Durham, was published, in 1811, in the Medico-Chirurgical Transactions. A sailor, plagued by this parasite, had noticed that large fragments of the worm were passed whenever he had swallowed an unusual quantity of raw gin. Thinking that a stronger spirit might have a stronger effect upon his internal enemy, he tried a glass of turpentine, which completely cured him. This practice was then taken up by some unprofessional persons, who gave turpentine, with similar success, in several cases. At last Dr. Fenwick, in conjunction I believe with my friend Dr. Southey, investigated the subject; and when they had satisfied themselves of the value of the remedy, the result of their inquiries was communicated by Dr. Fenwick to the late Dr. Baillie, in a letter which was read before the Medical and Chirurgical Society. But there is nothing new under the sun. Fifty years ago, Mr. Maiden, in the Memoirs of the London Medical Society, recommended the same remedy, in the same doses, for the same purpose. But his recommendation had been neglected, or forgotten. The dose of turpentine is from half an ounce to two ounces. It may be given i'l combination with castor oil ; or castor oil may be administered afterwards to assist its })urgative effect. It should be taken in the morning, fasting : and no drink should be admitted into the stomach until the medicine begins to operafe, lest sickness and vomiting should be provoked. The worm generally is voided, dead, within an how or two. 840 TAPE-WORMS. The inconveniences of turpentine as a remedy are its nasty taste, the sort of intojci- cation it is apt to produce, the distressing sickness it excites in some persons, and the strangury it sometimes occasions. This effect of it, however, is less common from large than from small doses of the oil. The bowels should be kept open with castor oil, so long as the urine retains the violet smell, which indicates the presence of the turpentine in the circulation. Upon the continent a celebrated empyreumatic oil, called Chabert's, is in great repute. It contains turpentine ; but is still more nauseous than it. One part of the empyreumatic oil of hartshorn is mixed with three parts of oil of turpentine. Aflir the mixture has stood for three days, three-fourths of it are to be distilled over, in glass vessels, by means of a sand bath. Chabert was a veterinarj'^ surgeon, and had used this remedy with remarkable success upon domestic animals, cow's, dogs, and sheep. Bremser, after testing its safety by taking it himself, administered it, he tells us, to no less than 5(X) individuals troubled with taenia. Among these were two children, a year and a half old. He found it both a powerful and a permanent cure. Of the whole number treated there were but four who required a second course of the remedy. It seems to kill both the worms and their ova. The dose is two tea- spoonfuls, night and morning, until four or six ounces have been taken ; a purgative being from time to time interposed. If that dose produces any confusion of head, it must be diminished. Bremser admits that this curative process is tedious, but affirms that, on the other hand, it is safe, and but little inconvenient. When the patient has continued free from any symptoms of tape-worm for three months, he concludes that the cure is absolute. Other practitioners agree with him in attesting the efficacy of this oil; but are not so confident about its perfect safety and convenience. Another great remedy is the bark of the pomegranate-root. This is at least as old as the time of Celsus. It has long been employed in India. Its value has only been recently appreciated in France; and in this country it is not much used, I believe, even yet. You may read a very instructive account of its effects in a paper communicated to the Medical and Chirurgical Society by Mr. Breton. He boiled two ounces of the fresh bark of the root in a pint and a half of water, till the decoc- lion was reduced to three quarters of a pint. Two ounces of this, cold, he gave to a patient who had tape-worm, and repeated the dose every half hour until lour doses had been swallowed. About an hour after the last dose, an entire taenia was voided alive. The bark dried in the sun he found still more active. A stout man forty years old, took a decoction prepared in the same way as the former, only with the dried instead of the fresh bark. Three hours after the first dose, a live tape-worm came away, nineteen feet two inches long. The medicine thus prepared seemed to be too strong ; the patient was sick, giddy, and trembling for several hours. He, also, had taken four doses. To two boys, of seven and ten years of age, he began early in the morning to iidminister one ounce of a decoction made of half the previous strength, every half hour, for six times ; and then stopped. In the middle of the day he resumed the medicine in half-ounce doses. Giddiness and faintness soon came on ; and, about five o'clock, each of the patients passed a ta?nia of the solium kind. A scruple of the powder was given, mixed with water, every hour for five succes- sive hours, to a boy of nine. Forty minutes after the last dose a living tasnia was expelled. The same quantity was given to a girl, ten years of age ; beginning at eight, and repealing the dose hourly till twelve o'clock. At twenty-four minutes past one she voided a living taenia lata; and the next morning, at nine o'clock, a dead taenia sohum. This curious case shows that the two species may exist in the same person at the same time. Mr. Breton relates other examples, but those which I have cited are quite suffi- cient to demonstrate the power of this substance. The bark appears to act upon the worm as a poison. In tepid water tjeniae will live for several hours. When they are plunged into the aforesaid decoction, they writhe and manifest great uneasiness^ INFLAMMATION OF THE LIVER. 841 Between the first dose of the medicine and the expulsion of the worm, the shortest period appears to liave been three hours, the longest twenty-five. Louis's ten cases, before referred to, were all treated by a nostrum called the potion of M. Darbon. It proved successful in all. Eight or ten ounces of it were taken in the morning, before breakfast ; and the cure was accomplished by that single dose. It is said to be quite safe, to have no very decided taste, and to cause no further in- convenience than a slight colicky feeling, and uneasiness in the epigastrium, less than is produced by many a purgative : and even these sensations were probably owing to the movements of the worm ; for when, after the lapse of four months, the dose was repeated, it was followed by no inconvenience at all. The medicine is not strongly cathartic, and sometimes requires the aid of a lavement. In each, of these cases the expelled taenire were apparently dead. Their Aeaf/s were detected in the evacuations : in one instance seven heads were seen. Louis says that within a few days at furthest after the discharge of the worms, all the previous symptoms of their presence ceased ; and the patients improved in respect to appetite, digestion, complexion, flesh, and strength. They all remained well four months afterwards, and then the potion was again administered; but it brought away no more worms. Some of the patients, who had previously tried other modes of cure, had never enjoyed so long an interval of freedom. Various other remedies have been employed, and employed with more or less success. One of them, the root of the male fern, formed the basis of a nostrum, called Madame Nouffer's, which was so highly thought of, that in 1776 the King of France gave that lady some hundred pounds sterhng for the secret of its com- position. I think, however, you will find the oil of turpentine equal to the cure of tape-worm in most instances. Should it fail, or should circumstances forbid its use, I would advise you to resort to the bark of the pomegranate root. It seems pro- bable that M. Darbon's remedy, if its nature were divulged, would supersede all others. LECTURE LXXV. Diseases of the Liver. Acute Inflammation. Abscess of the Liver. Causes and Treatment of Acute Hepatitis. Clironic Hepatitis. Jaundice. Its Symptoms, Causes, and Species. From the alimentary canal I go to the other organs directly or indirectly con- cerned in the digestion and assimilation of our food. And, first, let us look at that large gland, the liver, of which the main office, so far as we can perceive, is the se- cretion of bile. The liver is liable to various forms of disease : but it is not so frequently in fault as many would have us believe. It is often blamed most gratuitously and unjustly. The researches of Mr. Kiernan, recently published in the Philosophical Trans- actions, have paved the way for a better understanding in future of its pathology. If I did not feel myself too much circumscribed by the remaining limits of this course of lectures, I should be glad to attempt to assist you in construing Mr. Kiernan's somewhat difficult and very valuable paper. But doubtless you are made familiar with the anatomy of the organ, as described by him, in other lectures : and I must content myself with noticing, as we go along, one or two points, in respect to its mor- bid appearances, concerning which, before Mr. Kiernan took the subject up, great mistakes prevailed, even among the most celebrated pathologists. I shall follow the usual order, and consider first, injiammation of the liver, which may be either acute or chronic. Tht se are, both of them, diseases that are much more common in warm climates than here. Of well-marked acute hepatitis the symptoms are fever, with pain and a sense or 3v 842 INFLAMMATION OF THE LIVER. tension in the ri-^hl hj-pochondrium, inability to lie on the left side, difficulty of breath ing, a dry coujb, vomiting, hiccup. You will not find all these symptoms present in every case : yet they are all worth attending to. The pain is sometimes sharp and pricking, like a pleuritic stitch: sometimes dull and tensive. In the former case the peritoneal covering of the gland is supposed to be affected ; in the latter its parenchyma. The pain sometimes extends to the right clavicle and to the top of the right shoulder. This circumstance was noticed by Hippocrates ; and I have referred to it bel'ore as a good example of what are called sympathetic sensations. The existence of this pain makes it probable that the inflammation affects the convex surface of the hver. Occasionahy the left shoulder is painful : the left lobe of the hver being involved in the disease. The pain in the right side is aggravated, often, by the movements of the diaphragm in respiration ; and this explains the embarrassment of the breathing, and the short dry cough. Why the patient cannot well he on the left side is obvious enough : all the connections of the inflamed organ are then put upon the stretch by its weight. There are, how- ever, some exceptions to this rule. On the under or concave part of the hver lies the pyloric extremity of the stomach ; and that viscus often s^-mpalhizes with the hepatic inflammation : nausea and vomiting occur ; and hiccup. The thoracic symptoms on the one hand, or the stomach symptoms on the other, may be expected to predo- minate, according as the convex or the concave surface of the organ is chiefly the seat of the inflammation. The situation of the pain, the cough, the short and shallow breathing, used to puzzle the older observers : and they confess their occasional inability to determine whether the inflammation was situated in the lower lobe of the right lung, or in the liver. But now-a-days we need have no difficulty in making the diagnosis. The ear wilHell us, if we employ auscultation and percussion, whether the contents of- the chest or of the belly are suffering: and my own experience has taught me that sharp pain, with feverishness, occurring in the debateable ground of the right side, denotes pleuritic inflammation far more often than it denotes hepatic. Jaundice is an occasional, but by no means a necesaanj effect or accompaniment of hepatitis, whether acute or chronic : and, therefore, what I have to say of that symptom I shall give under a separate head. Acute hepatitis may terminate in resolution ; or it may terminate in diffused sup- puration ; or, what is more usual, in the formation of a circumscribed abscess, or of abscesses, in the liver. In this climate we do not often meet with hepatic abscesses ; but they are very common in hot countries : and some of the most interesting events of the disease have relation to the progress of these collections of matter. When they approach the surface of the liver, adhesions generally take place (in virtue of that conservative principle of which we so constantly discern the working) between the diseased organ and the neighbouring parts. If no such adhesion occurred, ihe matter would at length burst into the cavity of the peritoneum ; and this does some- times happen. The peritonitis, which is thus suddenly set up, is almost fatal. I referred, however, in a former lecture, to one instance in which it was recovered from. Sometimes the adhesion is effected between the liver and the parietes of the abdo- men, and the abscess points externally, and may be opened by the surgeon. Such a case occurred in my neighbourhood last year. Sometimes the liver glues itself to the stomach, or to the intestines ; and then the abscess breaks into the alimen'.ary tube, the matter is evacuated by vomiting, or by stool : and all goes on tolerably well again. In other instances the agglutination is to the diaphragm, which is per- forated, and the pus makes its way into the sac of the pleura, or through the lung to the bronchi, and so out by the mouth. I have seen three examples of this my- self. In one the abscesses originated in the formation and degeneration of hydatids in the liver ; and the patient ^(a woman, she was under Dr. Macmichael's cure in the Middlesex Hospital) spat up quantities of yellow fluid, consisting partly I sup- pose of pus, but chif^fly of pure bile. The examination of the dead body ultimately demonstrated the nature of that case. The second of the three patients got well: yet 1 cannot doubt that, bating the hydatids, the disease ivas essentially of the same INFLAMMATION OF THE LIVER. 843 kind. It also occurred in a woman, whom I admitted into th(5 hospital. She was a kitchen-maid at the Thatched House Tavern in St, James's Street ; and she had received a violent blow at the back part of the right hypochondriuin. This was fol- lowed by pain there and by fever ; and at length she began to have cough, dyspncea, and expectoration. She brought up an abundance of frothy mucus of a bright yel- low colour: not at all resembling the rusty sputa of pneumonia, but exacily of the tint which bile would give to it. At the same time large crepitation could be traced from the bottom to the top of the right lang, I fully expected that this woman would die : but by degrees the j^ellow expectoration ceased, all the auscultatory signs gra- dually disappeared, and she recovered perfectly. It is plain that in such instances as this, there must be adhesion of the Inng to the diaphragm also: but cases have occurred in which the matter burst into the cavaly of the pleura, and presently destroyed the patient by suffocation. The event of the third case is still s^^h judice. A gardener, of forty-five years old, was attacked, four weeks before he came under my care in the hospital, with severe pain in the right loin. Just at the edge of the short ribs, and not far from the vertebral column, on the right side, I found a large elastic swelling, very tender, and of a bluish red colour. As the patient's urine was most remarkably loaded with amorphous deposits, my iirst suspicions turned towards the kidney. It soon, how- ever, became evident that, although the tumour was below the diaphragm, the parts above that muscle were involved in the disease. The righl, half of the thorax was dull to percussion ; no vesicular breathing was audible there, but some scattered cre- pitation and bronchophony. Four days subsequently to his admission the patient began, during an effort of coughing, to discharge almost in a stream, from his mouth, a considerable quantity of gray, pultaceous fluid, of the consistence of gruel, and hor- ribly foslid. Altogether the amount of matter thus expectorated was estimated at two quarts. The pain then ceased ; and the swelling was observed to be less. After three days more, it was deemed proper to puncture the tumour, and matter was let out having precisely the qualities of that which he had ejected through the mouth. The patient remained eleven weeks in the hospital, the expectoration becoming less unnatural, and the discharge from the abscess gradually diminishing. He then chose to depart. Some months afterwards he applied for re-admission, and again stayed with us a week or two. His health had much improved during the interval: but the wound in his back was still open, and he still continued to expectorate some- what : and yellow bile was frequently to be seen, both on the dressings which covered the puncture, and in the vessel into which he spat. I think it probable that this man may eventually recover, at the expense, however, of a permanently da- maged lung. Rigors occurring during the progress of hepatitis should make us suspect that suppuration is taking place : if the pain is thenceforward mitigated, or exchanged for a sense of \veight, and hectic fever sets in, we may be tolerably certain that pus has formed. Of the several courses taken by an hepatic abscess, that towards the surface of the body is the most common ; and it is the only one with which w'e are able to interfere. And the chief thing we have to look to, is not to interfere too soon. The adhesion of the inflamed organ to the wall of the abdomen is the indispensable condition, not of success only, but of safety, where the question arises of puncturing the tumour. Without such adhesion the pus will be transferred from the cyst to the cavity of the peritoneum ; or if the abscess be not reached by the scalpel, that cavity will be laid open. Now it is not easy to ascertain whether there be adhesion or not. Certainly the operation ought not to be attempted until the parts above the abscess are very thin, and are verging to a point; and even then, unless there were some distinc purpose, besides that of saving a little time, some urgent distress or danger to relieve, I think such abscesses might be more prudently left to themselves. Dr. Gregory, of Edinburgh, used to mention a case in which, as fluctuation was palpable, and the tumour pointed, it was proposed to open it ; but the patient died, somewhat suddenly, before the operation could be performed; and inspection of the dead body showed that no adhesion existed. Mr. Malcolmson has lately published, in the 3Iedico-Chi- 844 ACUTE HEPATITIS. riirgircd Tranaactions, two or three instances of a like kind. These are circum- stances which teach us to be cautious about recommending the operation. A case is recorded of the bursting of an hepatic abscess into the pericardium; another into the vena cava. Facts of this kind constitute mere medical curiosities, and have no practical bearing. It is clear, both from the size of the organ, and from its situation in the body, that an abscess in the liver can never be otherwise than gravely hazardous. Yet many recover from them. Much evidently depends upon the manner and direction in which the pus seeks a vent. The most desirable road for its exit is one which it sometimes takes, but which I have not yet mentioned. It occasionally flows out into the duodenum through the excretory ducts of the liver, when these happen to have been laid open by the suppurating process. Next to this we may hope for its dis- charge through the adhering parietes of the abdomen ; next by a breaking of the abscess into the ahmentary canal. The escape of the matter through the air-pas- sages is fearfully perilous ; and its entrance into the shut serous sacs, or into the great blood-vessels, almost necessarily fatal. I have spoken of an abscess in the liver, as an event of acute inflammation of that organ. Such inflammation is apt to arise, in tropical countries, after exposure to cold. In any climate it may be excited by a blow, or other mechanical injury. But abscess in the liver seems to be far more frequently the result of other remote causes. You will call to mind those collections of matter which form in the liver, as well as else- where, in consequence of suppurative phlebitis. There is, moreover, acknowledged connection between hepatic suppuration and dysentery. In hot chmates the two are often found coincident. It has commonly been thought that, in these cases, the affec- tion of the liver happens first, in the order of time ; that the hepatic disease, inter- fering with the freedom of the portal circulation, occasions congestion of the submu- cous capillary blood-vessels, and so disposes the membrane to take on inflammation under the influence of any slight exciting cause. In some recent lectures, however, dehvered before the College of Physicians, Dr. Budd has proved, by a careful colla- tion of a large number of authentic instances, that the relation of these two morbid conditions to each other, is exactly the reverse : that the dysentery is the primary disorder, and the hepatic abscess the secondary ; the link of connection between them being the same as between suppurative inflammation of a vein, and the forma- tion of pus in parts more or less remote. The blood, in its return through the veins which are tributaries of the vena porta, carries with it, if not pus, yet some vitiating ingredient from the inflamed membrane : and this vitiating ingredient pro- vokes inflammation in the capillary vessels of the liver. This, to the best of my knowledge, is a new, and certainly it is an important view of the pathology of hepatic abscess. I trust that, ere long. Dr. Budd will lay before the public the evidence upon which it is founded. Acute hepatitis, when it occurs, requires vigorous treatment in the outset. Our object is, if possible, to prevent suppuration. Blood should therefore be freely taken from the system by venesection, and from the neighbourhood of the inflamed part by leeches. I will not weary you by going over the old ground that we have so often trodden already, nor repeat observations which have been many times made respecting the methods, and the requisite amount, of this great antiphlogistic remedy. Depletion of the portal vessels may also be indirectly obtained by purgatives; espe- cially by such purgatives as produce copious and watery stools. The neutral salts are therefore proper in this disorder. It may be, as some suppose, that they operate beneficially, as counter-irritants, upon the duodenum; but their eWecl in draining the veins that feed the vena porta, and thereby relieving the hepatic congestion, is more obvious and more intelligible. These saline medicines should be much dilutea; and their action may be quickened, if that be necessary, by adding the infusion of senna. After blood-letting has been duly performed, and the force of the inflammatory action has been broken, blisters may be applied to the right hypochondriuni : and I lielieve that repeated blistering is more serviceable than a single bUster kept open by sjivme ointment. I CHRONIC HEPATITIS. 845 Some diff^^rence of opinion prevails among medical men in regard to the employ- ment of mercury in the outset of acute hepatitis. I cannot pretend to offer you the results of my own observation on this point, but I find that the best authorities, among those who have had to treat the disease in hot climates, are against its use at the very first, as being stimulating to the liver. I suspect that this is a piece of theory : but at all events, after the first violence of the inflammation has abated, that remedy is not to be omitted, either in the acute, or in the chronic form of the disorder, to be mentioned presently : only in the one case it should be so administered as to affect the system as speedily as possible; in the other it is to be introduced. with a slowness which bears a proportion to the pace of the disease. When suppuration has taken place, or is unavoidable, when the patient ceases to complain of pain, but has in its stead a feeling of weight in the hypochondrium, and becomes distinctly hectic, a corresponding change must be made in the treatment. Active depletion is no longer admissible ; you must sustain the strength by a more nourishing diet, and prescribe some tonic remedies ; the sulphate of quina, with sulphuric acid ; or the nitro-muriatic acid, which enjoys a considerable repute, greater perhaps than it merits, for the relief of liver complaints. Acute inflammation of the liver is apt to degenerate into chronic. Chronic in- flammation may also arise under the circumstances that give birth to the acute form. Chronic hepatitis, again, is not unfrequently produced by the presence of specific disease in the liver ; of carcinoma ; of scrofulous tubercles. JVIelanosis and hydatids are both of them of common occurrence in the same part ; and they may give rise to symptoms, or they may not : and when these morbid conditions do declare them- selves by external signs, those external signs are very much the same as belong to chronic hepatitis. The precise diagnosis is exceedingl)'' obscure ; the symptoms point distinctly to the fiver as the seat of the disorder ; but as to its exact nature, we must often be content with probabilities alone. The symptoms of chronic hepatitis— or of the chronic forms of disease to which I have alluded, when they show themselves by symptoms — are (I give you them in Cullen's words) "some fullness and some sense of weight in the right hypochon- drium; some shooting pains felt at times in that region; some uneasiness or pain felt on pressure in that part ; some discomfort from lying upon the left side; perhaps some degree of jaundice ; and sometimes a certain amount of fever coinbining itself with more or fewer of these symptoms." In short, they are just the symptoms of acute hepatitis occurring in a minor degree. Chronic affections of the liver are sometimes attended with an increase, and some- times with a diminution, of its size. When it is augmented in bulk, its place and. enlargement may be ascertained by palpation and percussion ; nay, the magnified gland may sometimes be seen, extending beyond its proper situation in the hypo- chondrium, and passing far down into the abdomen. I have known the liver reach to the right groin : and when its left lobe is affected, it will sometimes stretch across towards the lower part of the left side of the belly. On the other hand, the liver may shrink into a much smaller space than it naturally occupies. These small livers are usually hard. Interfering more with the portal circulation than many enlarged livers do, they are more frequently attended with dropsj'' of the peritoneum. The "hobnail" liver, the cirrhose of modern French writers, is nodulated as well as hard. The irregularity of its surface may be so great as to be perceptible to the touch. I fully described this condition of the liver when I was upon the subject of passive ascites, of which it is the most common cause. I mentioned, also, some time ago, the " fatty" liver, so frequently found associated with pulmonary consumption. The liver in this state is soft, enlarged, smooth on its surface, and of a buff or tawny colour throughout. Mr. Bowman has lately shown that these changes are owing simply to the unwonted abundance of certain small granules of fat, of which, in the healthy organ, each lobule contains a few only. If in a phthisical patient we find the liver palpably enlarged, we may guess that it is encumbered with this interstitial fat : but there are no symptoms peculiar to the fatty liver. As to its cure, we are quite helpless : and the same may be said of the hobnail 3v2 846 CHRONIC HEPATITIS. liver, as well as of all those forms of disease in which the organ is loaded with specific deposits. Dark masses of extravasated blood are sometimes found interspersed through this gland, and then, by an absurd perversion of language, the patient is said to have had "apoplexy" of the liver. The same causes which produce acute hepatitis, acting in a less intense degree, will excite chronic inflammation of the same textures. Intemperance, also, and par- ticularly the habitual and excessive use of alcoholic liquors, certainly tends to generate hepatic inflammation, especially in its more chronic form. We see this even here, and it is still more strikingly perceptible in v^^arm climates, as you may learn by reading the works of those persons who have had experience of the diseases of India. Dr. William Ferguson, for example, who was for some time chief of the medical staff of the windward and leeward islands in the West Indies, observed that there was a regular increase and aggravation of these chronic affections of the hver among the troops after they received their monthly pay, when they drank great quantities of ardent spirits ; arrack in the East Indies, and rum in the West. There has long been supposed to be what is called a gin-drinker' s liver, in which a section of that gland presents an appearance very closely resembling the section of a nutmeg; and a good deal of useless speculation has been employed as to the nature of the change which has taken place in such cases. Mr. Kiernan has clearly shown that the nutmeg aspect of the liver is produced by mere congestion of blood. Congestion of the liver is, indeed, very likely to arise under the daily stimulus of distilled spirits, but it arises under various other circumstances besides ; and there- fore it is no safe test of the intemperate habits of the party. And of this we had sufficient evidence before Mr. Kiernan's observations were published. Again and again have I met with the nutmeggy liver, strongly marked, when there was reason to believe that the possessor of it had never transgressed the strictest rules of tem- perance in drinking: in young persons, for example, of both sexes, who certainly never had been dram-drinkers. Disease of the heart is a very obvious, and a very common cause of hepatic congestion. You are aware that the congestion occurs under two forms, according as the branches of the hepatic vein, or of the vena portge, are gorged. If both these sets of vessels are full, the liver is universally red. If the hepatic vein alone be the seat of the congestion, then in the centre of each lobule we see a red speck, surrounded by yellowish matter; the specks are isolated, the yellow colour is arranged in a sort of net-work. Whereas, if the portal system be greatly engorged, the red streaks will be continuous, and the yellow portions hemmed in by them, and isolated. I show you these distinctions in some specimens prepared by Mr. Kiernan himself. I should have stated, when speaking of the signs of chronic hepatitis, what is sin- gularly true of chronic hver affections in general, that they are apt to be attended with much languor and lassitude, and a remarkable depression of spirits ; and with that sort of dread, and apprehension of impending evil, which I mentioned as being a striking feature of hypochondriasis: the very derivation of which term marks its frequent connection with hepatic disorder. There is sallowness of the complexion also ; and sometimes emaciation. The same rem.edies are adapted to the chronic as are proper for the acute inflam- mation of the liver: the comparative mode of their exhibition, however, differs somewhat. Blood-letting is not often necessary or advisable, except when more violent aggra- vations than usual of the inflammatory symptoms supervene. Topical bleeding, and blistering, are more expedient. But the two main remedies to be tried in this complaint are mercury, and the sahne puriratives, given in small doses, and repeated for a long time together. Five grains of biue-pill every night, or every night and morning ; and as much of the sulphate of magnesia as will produce one or two watery stools every day, for weeks, perhaps, in succession. Patients are not so well content to bear this discipline when it is administered in boxes and phials, as physic; but they have more faith in the natural mineral waters : so that a residence at Cheltenham, or some such place, is JAUNDICE. 847 exceedingly proper to be recommended in these cases ; where the daily use of tho waters may keep up a continual drain on the system of the vena portse ; and where relaxation from business, the amusements that are constantly going on, with change of scene and of society, may contribute to dissipate the hypochondriacal feelings which are so apt to render the subjects of chronic hepatic disease supremely wretched. Moderate exercise, in the open air, on horseback and on foot, should be encouragea There is no doubt that hepatic as well as gastric derangements are fostered by sedentary habits. Tepid bathing is another expedient from which benefit may be hoped. In many instances it will be proper to make trial of Scott's nitro-muriatic bath. Iodine has been thought of much use in certain kinds of hepatic disease ; in those kinds especially which are connected with enlargement of the viscus. The iodide of potassium, or a mixture of the iodide and of iodine, or some of the combinations of iodine and mercury, may be given in such cases; or the iingiienfum iodinii composifum, or the unguentum hydrargyri iodidi of the Pharmacopoeia, may be rubbed night and morning upon the hypochondrium. I have not seen much benefit from these forms of medicine myself, in such cases ; but they are said, by persons of experience and credit, to have been successful in their hands. Tantxacnm is also a drug which has been much employed in liver complaints, since Dr. Pemberton's book on the diseases of the abdomen was published ; but it is very doubtful, in my mind, whether it ever does much good. The Germans are very fond of giving the rauriate of tnnmonia in small and frequent doses. They have the same belief in the virtues of this salt, in various disorders, as the English practitioners have in those of mercury ; and, what is curious, they attribute to it some specific agency upon the functions of the liver. In the account which I have now given of the principal diseased conditions of the liver, I have not included nor dwelt upon all the changes of structure and appear- ance to which that organ is liable. There are various conditions which disclose themselves by no intelligible symptoms during life, of which the nature has not yet been determined, and of which the cure still remains to be discovered. At this advanced period of the course, and with no time to spare, I do not think it necessary or right to trouble you with the unprofitable discussion of matters that are not strictly practical. I have mentioned jaundice as an occasional symptom both of acute and of chronic inflammation of the liver. But jaundice is spoken of, in general, as constituting, itself, a distinct form of disease. If we consider it in that light, its diagnosis is most easy. We have only to look upon our patient to know what is the matter with him. But jaundice depends upon various and very different morbid conditions ; and, look- ing to those conditions as the true objects of diagnosis, we find that the real nature of a given case of jaundice is often involved in very great obscurity. Let us first consider the constituent features of jaundice, whether it be regarded as a disease, or as a sign of disease. They are, yellowness of the skin and of the eyes; whitish feces; urine having the colour of saffron, and communicating a bright yellow tinge to white linen. The characteristic yellow hue is owing, no doubt, to the presence of bile, or at any rate of the colouring matter of the bile, in the circulating blood. And the deep tint of the urine is evidently derived from the same source. On the other hand, the paleness of the feces is to be ascribed to the want of bile, which always exists in healthy and natural excrement. This last symptom is not, however, a constant one ; there may be jaundice while bile appears in the stools. I shall explain how this is supposed to happen, presently. It has been made a question how the bile, or its colouring matter, comes to be visibly present in the blood, or rather in many of the tissues supplied by the blood, and in several of the other fluids of the body. The general opinion, and probably the true one, is, that the bile, after being secreted in the liver, is reabsorbed, and car- ried into the circulation, and so conveyed to the surface, and to the parts in which 848 JAUNDICE. the change of colour is observed. This explanation is consistent with the pheno- mena wnicl) we notice in the disorder. But another theory has been broached on this subject; first, I believe, in this country, by Darwin. It has been more recently revived by M. Chevreul, who is followed by Mr. Maj'^o. These pathologists are of opinion that the bile is formed, not b}"^ the hver, but in the blood : that the office of the liver is to strain ofiT or with- draw the bile from the circulation, constantly, as fast as it is formed; just as the per- petual elimination of urea from the blood appears to be one great purpose of the kidneys. They hold, therefore, that jaundice manifests itself whenever the due separation of the bile from the blood is suspended or imperfect. Failing of its natu- ral vent, this peculiar substance accumulates in the blood, seeks other outlets, is deposited in various places, and, in fact, partly escapes through unaccustomed chan- nels. They speak of jaundice as a symptom of suppression of bile, while others consider it as a sign of retention; using these words, suppression and retention, in the sense in which they are applied to the secretion of urine. They maintain that the proper function of the liver, the abstraction of bile from the blood, may be arrested by alterations of the substance and structure of that gland ; or by the oblite- ration or obstruction of the gall-bladder or ducts, impeding or forbidding the removal of the bile already formed ; or by some obscure influence of the nervous system upon these organs. They introduce the last kind of cause with the view of explain- ing those cases, which certainly occur, in which jaundice is the result of severe bodily pain, or strong mental emotion. Nay, on their supposition, we might even suppose that the yellowness is sometimes due to a spontaneous and unwonted abun- dance of the elements of bile in the blood ; in which case, we need not wonder that jaundice should go along with perfect integrity of the biliary apparatus. The advocates of the first-mentioned supposition are aware of the difficulties opposed to its reception, by the occasional absence, even in cases of well-marked jaundice, of all organic disease or apparent obstruction to the excretion of the bile. They show that in verj^ many cases there is some obvious mechanical obstacle to the efflux of the secreted fluid ; and in those instances in which none can be discovered after death, they conceive either that the ducts of the hver had been temporarily plugged up by inspissated bile, or a sort of biliary sand — or that they were closed for a time by spasm — or by some morbid condition of the duodenum. Now, of these two hypotheses, that which ascribes the yellowness to the reabsorp- tion of secreted bile is, to my mind, the most probable and the simplest; and I can- not see that it is attended with more difficulty than the other. But you may choose for yourselves between them ; and I pass from this digression to a somewhat closer examination of the principal circumstances noticeable in the complaint. Its technical appellation, I should observe, is icterus., which is the Greek name for a bird with a yellow plumage, the galbula, or golden thrush ; the sight whereof, by a jaundiced person, was death (Pliny tells us) to the bird, and recovery to the patient. Various other terms have been applied to the disorder, most of them having reference, like jaundice itself (from the French Jo?/?2e), to the unnatural colour. Morbus arqiiatics, from its exhibiting some of the bright hues of the rainbow ; aurigo, from its resem- bling gold ; and we hear the common people say, now-a-days, such a one is as yel- low as a guinea. The Latins spoke of it, also, under the title of morbus regius. Why they so called it, we learn from the following curious passage in Celsus, giving an account of the pleasant regimen, fit for royalty itself, to be adopted by those who labour under the malady: "Per omne vero tempus utendum est exercitatione, fric- lione : si hiems est, balneo; si asstas, frigidis natationibus ; lecto etiam et concla/i cultiore, lusu, joco, ludis lascivia, per quae mens exhilaretur: ob quce regius morbus dictus videtur." The whiteness of the stools I have mentioned as being a very common, but not a ..onstant appearance. It clearly depends upon the absence of bile. But sometimes •.here IS bile in the discharged feces, and, at the same time, the yellow colour of the ^km and eyes. This probably depends upon the circumstance that some branches of the hepatic ducts are obstructed, while the others are free ; and thus the bile that is secreted is, in part, reabsorbed into the blood, and in part carried off into the intes- JAUNDICE. 840 tines. In a former lecture, I stated that one of the uses of the bile appeared to be that of stimulating the bowels to action ; it is the natural purgative. Accordingly, in most cases of jaundice, the bowels are costive. But neither is lids uniform. In some of the worst cases, wherein the jaundice depends upon hepatic disease, which is connected with disease also of the mucous coat of the intestmes, there is constant iiarrhcea. In some instances the yellowness of the skin is at first attended with itching, which is occasionally so intolerable as to require the employment of opiates to allay it. In most cases there is no itching at all. The bile never fails to appear in a deep vessel, even black ; and which tinges any white substance that is dipped into it of a bright yellow. The urine which thus sometimes seems black, may be proved to derive that appearance merely from concentration of the yellowness, by pouring a little of it into a shallow white dish, or by diluting it with water ; when the brilliant yellow tint will become manifest. Bilious sweat sometimes occurs, staining the patient's linen yellow. The saliva, in some jaundiced persons, has the same yellow tinge, and a distinctly bitter taste. It has been said that the milk of women who are nursing is made yellow in this disorder. Dr. Heberden, however, states that he never wit- nessed this ; and he had known a woman with a very deep jaundice upon her, suckle her infant for six weeks together with no apparent bad effects upon its health. One man assured him that his tears were yellow. You are aware of the vulgar notion, that to a jaundiced eye all things appear yellow. It is an old notion, for we find it expressed by Lucretius : — "Lurida prteterea fiunt qusecunque tuentur Ar- quati." Heberden was disposed to regard this as a mere poetical fiction. But cer- tainly it is sometimes, though very rarely, indeed, a fact. Two women, whom he considered, however, to be of little credit, told Heberden that objects appeared yellow to them. I have been assured of the same thing by a medical man who experienced it in his own person. If I do not mistake. Dr. Mason Good saw all things yellow when he was jaundiced. Dr. EUiotson has had some very interesting cases of this phenomenon. One of his icteric patients declared that objects seemed yellow when looked at with one eye, but not with the other ; and in the eye that perceived the yellow tint he observed two large red vessels running towards the cornea. And in one or two instances, which he met with afterwards of yellow vision with both eyes in jaundiced patients, he found inflammation, or distended blood-vessels in both eyes. This very morning I saw in the hospital a patient of Dr. Wilson's, a middle-aged woman, affected with jaundice. She affirms that all objects seem yellow to her vision. In both eyes there are several varicose and singularly tortuous vessels, pro- ceeding across the sclerotica towards the cornea, and some of them reaching its margin. It seems probable therefore that ttie ophthalmic vessels, in their natural state, do not permit the colouring matter of the bile to pass through them ; but that when they become enlarged by disease, so as to admit the colouring particles of the blood, they may also give a passage to the yellow colouring matter, which tinges the humours of the eye : and in that case the objects seen through the yellow fluids would appear like those viewed through a piece of yellow stained glass. This is a point which is worth your attention in future. The shades of yellowness are different in different patients. Those who are pale and fair present a bright lemon colour. But in those who are florid, or whose cheeks and skin are flushed with fever, the tint will more resemble that of the Seville orange Again, if the patient be naturally swarthy, or if his visage is livid or dusky through imperfect arterialization of his blood, the superaddition of jaundice will give him a greenish hue. These differences resuU from natural or acquired difl!erences of com plexion antecedent to the' icterus. But sometimes the bile that is reabsorbed is vitiated and dark ; and we may have, for that reason, as Dr. Bail lie has pointed oui, cases of green or black jaundice. You will remark that from whichever cause the green or dark colour proceeds, whether from a mingling of the yellowness of the bile with the blueness of lividity, or from the circulation of green-coloured bile, such cases are especially unpromising cases. Icterus depends, as 1 have said, upon various and different internal causes : and frequently we cannot determine at all, until death affords us the means of inspecting 54 8r»0 JAUNDICE. tht! parts concerned in its production, what the precise exciting cause may be ; even when it is simply mechanical. Any kind of pressure made upon the excretory ducts of the hver will produce it ; and such pressure may be exercised b}'' tumours seated in the liver itself; or by a scirrhous pylorus; or by specific disease situated in the head of the pancreas, of which I have seen several examples ; or by a diseased con- dition of the duodenum : and these possible causes of a detention of the bile in its receptacle should always be borne in mind when we, are investigating an obscure case of jaundice. The impediment, in the cases just supposed, is external to the ducts ; but they may be obstructed within, plugged up by inspissated bile, or by a biliary calculus. This forms one of CuUen's species of icterus — the icterus culculosus. The concre- tion is most commonly situated, I believe, in the ductus choledochus ; sometimes, however, in the cystic, and sometimes in the hepatic duct. The pain that attends the passage of a gall-stone through these ducts is often dreadful. Perhaps there is no pain to which the body is subject that is more severe. You will not wonder at this, when you consider that through a tube, of which the natural size scarcely ex- ceeds that of a goose-quill, there sometimes passes a stone as big as a walnut. The common duct has been found so dilated as readily to admit one's finger. CuUen's definition of this species is "Icterus, cum dolore in regione epigastricil, acute, post pastum aucio, et cum dejeclione concretionum biliosarum." INow the last of these circumstances, the voiding of biliary calculi by stool, may happen over and over again, without its being noticed, and it does not help us at all to judge of the nature of the complaint at its commL-ncement, while the gall-stone is still in the ducts. With the pain, which is not constant, but comes and goes, there are much nausea and vomiting ; and sometimes hiccup ; and the matters vomited are usually very sour. The patient is flatulent and dyspeptic; languid and gloomy. At length the concre- tion passes into the intestines ; the pain suddenly ceases, and all is soon well again. Attacks of this kind, having happened once, are very apt to be repeated. Now this pain you might readily mistake for the pain of inflammation, were it not marked by these two circumstances — the absence of tenderness and the absence of fever. Pressure, instead of augmenting, usually mitigates it. The patient keeps his hand firmly applied to his epigastrium ; or rests, perhaps, the weight of his body upon some hard substance placed beneath his stomach. 1 speak now of the begin- ning of the attack, before there has been much retching ; for a degree of tenderness of the abdominal muscles is often produced by repealed straining and vomiting. The pulse is unaffected, or I should rather say it is not accelerated, during the pain : occasionally it is even slower than natural, and the skin cold. Though there be no inflammation, rigors may occur ; just as they sometimes happen when a solid sub- stance — a bougie to wit — is passing through, and distending the urethra. Nevertheless, inflammation does sometimes arise, and then the pulse becomes frequent, and the skin hot, and thirst and headache are complained of, and the epi- gastrium IS tender; and if blood be drawn it exhibits the buffy coat. Sometimes the gall-stone makes its way, by ulceration, through the contiguous structures, and so is discharged outwardly, or into the bowels. In such cases there must have been inflammation. As jaundice often occurs without any pain, so a gall-stone may enter and pass through the ducts, and produce pain, when there is no jaundice. The cystic duct alone may be blocked up, and that portion only of the bile be prevented from escaping which is accumulated in the gall-bladder. It is probable that re-absorption of the contents of that cistern is not very active. Or a calculus of an angular shape may stick in the common duct, and thus impede, without entirely stopping, the egress of the bile. Dr. Heberden thought that gastrodynia was not unfrequently owing to biliary concretions : founding his opinion upon the fact that many persons sufler, for months or years, under occasional attacks of epigastric pain, which is at last asso- ciated with jaundice. But after all, this might happen from progressive disease in the stomach itself; and it is a pity that Dr. Heberden's views were not fortified by diaseclioQ. Wiief ')nce a large calculus has forced its way through the natural channels of JAUNDICE. 85 the bile, they remain permanently dilated ; and smaller stones may be afterwards voided without pain or other notice of their passage. There are persons who get rid of scores of them in this way, during the course of their lives. Sometimes a large concretion, after its extrication from the biliary passages, lodges in the more capacious intestines, and gives rise to serious obstruction there. I men- tioned, recently, one case of this kind which had fallen under my own notice. But in general the concretions are presently voided with the stools : and they should always be looked for. The patient is much gratified by seeing that his enemy has been expelled; and also by the proof he thus obtains of the sagacity and judgment of his physician. The feces should be mixed with water, upon the surface of which any gall-stones, since they are specifically hghter than that fluid, will float. I never but once succeeded in thus catching a concretion in the evacuations of a patient, whose symptoms had led me to search for it. We often find gall-stones, even in vast numbers, in the gall-bladders of persons who, during their lifetime, had never been known to suffer pain about the fiver, or to have jaundice, or to exhibit any token of the presence of such concretions. We infer from this that, while they remain in the reservoir of the bile, they are harm- less ; and that the suffering and the hazard they occasion are mechanical conse- quences of their transit through the gall-ducts. I have heard of an instance in which upwards of 1,300 gall-stones were taken from a human gall-bladder after death. These gall-stones are not, as you might suppose, mere lumps of inspissated bile. There are, I believe, concretions of that kind, but they are very rarely met with in the human subject. The ordinary calculi consist, in a great measure, of a peculiar substance, cholesterine, which exists in a state of solution in healthy bile, but which, in some morbid conditions of that fluid, being released from its solvent, assumes its proper crystalline form. Very fittle is knovvn respecting the circumstances under which the change lakes place. Cholesterine, Dr. Prout tells us, is the product of some modification of the oleaginous principle. Biliary concretions seldom form in children. They are much more common in women than in men. They occur most frequently in persons who are corpulent, lead sedentary lives, use generous fare, sleep much, and neglect their bowels: all which things foster or denote a torpid and congested state of the hepatic system. Cattle are said to be subject to bihary calculi when shut up in stalls during the winter, and to lose the complaint when they are again turned out into the pastures in the spring. Hence the absurd notion, countenanced even by Van Swieten, that grass is a good remedy for jaundice. Another variety of jaundice, also noticed by Cullen, is supposed to depend upon mere spasm of the gall-ducts. ^^ Icterus spasmodicus, sine dolore, post morbos spasmodicos, et pathemata mentis." Now the existence of this cause is hypothetical. The gall-ducts, though not dis- tinctly muscular, possess a vital power of contraction. I am not aware that the disease has ever been clearly traced to a connection with "morbi spasmodici." It is an alleged cause which we can neither prove nor disprove. Certainly the " pathe- mata mentis" play their assigned part: fits of anger, and of fear, and of alarm, have been presently followed by jaundice ; and it has also been produced by great bodily suffering, by a severe surgical operation, or, perhaps, by the dread which attended it. Mr. North witnessed a case in which an unmarried female, on its being acci- dently disclosed that she had borne children, became in a very short time yefiow. A young medical friend of mine had a severe attack of intense jaundice, which could be traced to nothing else than his great and needless anxiety about an approachino- examination before the Censor's Board at the College of Physicians. There are scores of instances on record to the same effect: and tJiis is observable of such cases, that they are often fatal, with head symptoms : convulsions, delirium, or coma, super- vening upon the jaundice. But with respect to the immediate cause of the icteric symptoms, they may, I say, depend 'upon a spasmodic constriction of the gall-ducts. Mr. Mayo has suggested another cause, viz., the sudden formation of bile in unusually large quantity in the blood, by some influence propagated through the nerves. Jaundice sometimes supervenes upon violent and long-continued vomiting; in 852 JAUNDICE. which case the extremity of the gall-ducts is supposed to have been compressed by the coats of the duodenum. Jaundice may also occur, as I stated before, as a symptom of acute or chronic inflammation of the liver ; and then its treatment will merge in that of the primitive disease which occasioned it. Icterus occasionally comes on during pregnancy ; and disappears after childbirth The pressure of the gravid uterus may thrust other organs, a loaded colon for ex- ample, against the liver, and so impede the passage of the bile. The little exercise that pregnant women are apt to take, and the costiveness that frequently attends their condition, may have some influence in causing the icterus gravidarum. All systematic writers follow Cullen in making jaundice a common disorder among newly-born children. The icterus neonatoruin occurs, they say, a few days after birth ; is not attended with any suffering, or obvious disturbance of the bodily func- tions ; and soon disappears. Now there seems reason to beheve that this is not icterus at all ; and has no relation to the biliary organs. The surface of the infant, at its birth, is frequently of a deep red, from hyperemia or congestion of blood ; pre- senting a condition which falls little short of a mild but universal bruise. By degrees the redness fades, as bruises fade, through shades of yellow into the genuine flesh- colour. Such, 1 am assured by those who are more conversant with these matters than myself, is the pathology of the icterus infantum. Of course true jaundice may, as well as most other complaints, befall the earliest period of life ; but I conceive that it seldom does. The prognosis in jaundice is generally favourable ; except when it depends upon structural disease of the liver, or supervenes suddenly upon some great mental or bodily shock. In both these cases the prognosis is bad, or doubtful. It is better, in that variety connected with hepatic disease, if the disease proceeds from some known cause, by which a low degree of inflammation has been produced ; and the cause is such as can be avoided for the future. Just, indeed, as in chronic hepatitis, of which the icterus is simply an occasional symptom. The prognosis is worst of all in old persons, when the constitution is impaired, and there is no obvious cause for the disease ; and particularly when the colour of the skin is greenish, or approaching to black. [Mr. Twining, in his work on the Diseases of Bengal, has presented some very interesting and important views in relation to the patliology of jaundice. Mr. T. has found that jaundice, not only during its early stage, but for a long period subse- quently, while the discoloration of the skin remains, is very generally attended with some morbid sensibility when pressure is made over the situation of the gall-bladder and capsule of Glisson, though the uneasiness, during the absence of pressure, is most generally referred to the epigastrium. When the disease occurs in plethoric subjects, and the stools are of a pale clay colour, Mr. T. has found it almost always attended with fever, and in some cases he has known robust patients to die, with symptoms of oppressed brain, within thirty-six hours after the sudden appearance of intense jaundice, for the accession of which no cause could be assigned. In consequence of the acknowledged obscurity which exists in regard to the true pathology of the disease, he was anxious to ascertain the exact condition of the liver and biliary ducts in persons labouring under jaundice. The almost invariable existence of pain, increased upon pressure, confined to a circumscribed spot on the right side, just below the centre of a line drawn from the right nipple to the umbilicus, led him early to suspect circumscribed inflammation of some part of the liver as the most frequent cause of the disease. This opinion he believed to be confirmed by the good effects which, in the majority of cases, are produced by a systematic course of depletion: nevertheless, if circumscribed inflammation be the efficient cause of jaundice, he found it difficult to explain why the disease was so freqtiently absent during the progress of the most unequivocal and intense inflammations of large portions of that organ. The examination of individuals who had recovered from jaun dice only a short time before death occurred from other diseases, exhibited no appearances in the liver indicative of any circumscribed portion of it having been the seat of recent inflammation. In the course of his dissections, however, Mr. T. found that albuininous infil- tration into the cellular structure of the capsule of Glisson was sometimes present. Within this capsule are situated two small bodies, which, from their structure, appearance, and uni- formitv of situation, he is inclined to believe are absorbent glands : one of them is situated JAUNDICE. ^ 853 '^ear the termination of the gall-bladder in the cystic duct, the other, at the upper part of tha ductus communis; the superior gland is sometimes very small, and occasionally, it is more closely attached to the side of the gall-bladder than to the cystic duct; the lower one is more uniform in bulk, being usually half the size of a small bean; it is always placed just at the common biliary duct. Irritations affecting the absorbent vessels passing through this gland may, Mr. T. conceives, cause in it such a degree of swelling as would produce transient compression and closure of the common duct, and thus prevent the passage of the bile into the intestines, and give rise to the phenomena of jaundice. So long as the obstruc- tion is complete, the stools will be nearly white, or of a very pale gray colour; when, how- ever, the jaundice is attended with severe fever and symptoms of intense gastro-enteritis, the stools will very often be coloured by the blood which is poured out by the capillary vessels of the intestinal mucous membrane, as well as by other morbid secretions. When previous inflammatory disease of the capsule of Glisson has caused an infiltration of coagulable lymph into the cellular structure of that part, at a remote period, and its sub- sequent absorption has left a degree of induration and constriction, Mr. T. believes that a very slight enlargement of the lower gland will effectually compress the common biliary duct ; he has seen its canal obliterated, from this cause, exactly at the point of contact with the swollen and indurated gland. He has, also, seen the cystic duct obliterated where it was in contact with the upper gland, in consequence of the enlarged and diseased condition of the latter ; but he does not believe that this could have any influence in the production of jaundice. Mr. T. does not deny the agency which biliary calculi — tumours of the pancreas, liver or spleen, or scirrhous pylorus may occasionally have in the production of the phenomena of jaundice, nor that, in some rare cases, the disease may have been excited simply by mental emotion ; nor is he willing to place undue importance on the observations upon which his views of the most frequent cause of the disease are based. Should these, upon more ample investigation, be found to be correct, they will have an important influence upon the treat- ment of the disease. According to Mr. T., the most sticcessful plan of treatment in those cases of jaundice ac- companied with pain, augmented upon pressure, of the right side of the abdomen, is by depletion by the lancet and leeches — active purgation — the daily use of the warm bath — and sudorifics, aided by low diet and perfect rest, in the commencement of the disease; followed by milder purgatives, and a small blister over the region of the gall-bladder, kept open for a long time. Subsequently, a course of Cheltenham salts, or small doses of rhubarb and sal, polychrest, with gentle exercise, and frictions with camphorated liniment over the right hypo- chondrium are advisable : at the same time, it may be proper to allow a mild unirritating diet, in such quantities as shall improve the patient's strength. The disease may sometimes occur under circumstances that forbid depletion. This Mr. T. considers an unfortunate cir- cumstance, as he has but little confidence in other modes of treatment. In those cases in which the stools indicate the entire absence of bile from the intestmes, Mr. T. considers the use of mercurials to be of doubtful propriety; but, when bile does pass into the dtiodenum, he admits that calomel may be useful, in conjunction with the remedies already detailed. Excepting in cases where there is pretty positive evidence of the exist- ence of biliary calculi, which he believes to be less frequently a cause of jaundice than is generally imagined, he doubts the propriety of having recourse to opiates. Whether the views of Mr. Twining in regard to the pathology of jaundice be or be not correct, must be determined by the result of future and more extended observations ; they are sufficiently plausible and important, however, to demand the attention of the physician and to influence him in his treatment of the disease. In respect to the plan of treatment re- commended by Mr. T., we believe it will be found, with one exception only, to be, in a large number of cases, the only proper and successful one. The exception to which we allude, ia the indiscriminate admimslTaXion of active purgatives : jaundice is, not unfrequently, connected with more or less extensive inflammation of the stomach and small intestines, and in these casRS, the employment of active purgatives to the extent racommended by Mr. T. would un- questionably be decidedly injurious. — C] 3w 854 JAUNDICE. LECTURE LXXVI. Treatment of the variotts Species of Jaundice. Diseases of the Gall-bladder ; of the Spleen ; of the Pancreas. Diseases of the Kidneys. Nephritis and Neph- ralgia. Phenomena constituting a ''fit of the Gravel.''^ Different kinds oj Gravel. Diseased states of the Urine. Description and remedies of the Lithic, Phosphatic and Oxalic Diatheses. In the last lecture, after describing the symptoms, causes and treatment of acute and chronic inflammation of the liver, and after pointing- out various other forms of chronic disease to which that organ is obnoxious, I spoke of jaundice. I offered )''ou some comments upon its phenomena; and I indicated several different internal conditions upon which it may, in different cases, depend : and the lecture was closed with some brief hints respecting the prognosis of icterus. I have yet to consider the plans of treatment best adapted to the several varieties of the complaint. Some kinds of jaundice are obviously and absolutely irremediable. From others the patients recover, whatever treatment may be adopted, or without any treatment at all. Hence, as is customary in such circumstances, remedies the most worthless and absurd are extolled for their efficacy against jaundice. The patient gets well, and the drug last tried is held to have cured him. Post hoc, ergo propter hoc, is an argument more often applied I believe to the variations of disease, than to any other class of events. In that species of icterus which occurs, sometimes, in connection with acute or chronic inflammation of the liver, the treatment must be such as I yesterday recom- mended for acute and chronic hepatitis. Mercury forms an essential part of that treatment; and, unless the disease yielded sooner, I should urge the remedy until its effect upon the gums, and, therefore, its presence in the circulating blood, was apparent. But to the icterus calculosus, mercury is not so well adapted. What we want is, not a more plentiful or a more healthful secretion of bile, but to get rid of the me- chanical impediment to its excretion : or, at any rate, if that cannot be accomplished, to ease the acute sufferings of the patient. Should fever attend the passage of a gall-stone, or, should the epigastric pain become epigastric tenderness, leeches may be applied, or a vein may be opened. The abstraction of blood may prevent any thickening of the distended gall-ducts ; or it may perhaps relax their spasmodic closure around the calculus. But, in general, blood-letting is not of service nor requisite in this variety of jaundice. Our great resource, for relieving the pain, and for loosening the presumed spasms, is opium, given in full doses: and I can add but little, with any advantage, to the directions laid down, on this head, by Dr. He- berden. "This pain (says he) can only be assuaged by giving and repeating opium and its preparations, as often as the continuance of the pain requires them ; and be- cause this pain is very apt to return, the patient should always be advised to keep by him, as long as the distemper lasts, pills of pure opium, each weighing one grain — or what is equivalent to them — that no time may be lost in quieting a sensation which is so difficult to endure. One of these pills may be taken as soon as the pain comes on, and it may be repeated once or twice in the course of two hours, if the pain require it ; and I have often found it both safe and necessary to give much more." This plan, of giving opium in the form of pills, is the more judicious, because, from their small bulk, they are more hkely to be retained than draughts Avould be. Sometimes the stomach is so irritable as to reject even a pill. I would add, there- fore, to Dr. Heberden's recommendations, that of throwing an opiate injection into the rectum ; half a drachm or a drachm of laudanum, mixed with a small quantity of warm gruel. Another very useful expedient is the warm bath. If this cannot THE GALL-BLADDER. 855 be readily procured, hot fomentations to the epigastrium, the mustard-poultice, the turpentine stupe, are valuable substitutes for it. Dr. Prout states that he has seen more alleviation afforded by large draughts of hot water, containing the carbonate of soda in solution (one or two drachms to a pint), than by any other means. " The alkali counteracts the distressing symptoms produced by the acidity of the stomach ; while the hot w^ater acts like a fomentation to the seat of the pain. The first por- tions of w'ater are commonly rejected almost immediately ; but others may be repeatedly taken ; and after some time it will usually be found that the pain becomes less, and the water is retained. Another advantage of this plan of treatment is, that the water abates the severity of the retching, which is usually most severe and dangerous where there is nothing present upon which the stomach can react. This plan does not supersede the use of opium, which may be given in any way deemed most desirable ; and in some instances a few drops of laudanum may be advan- tageously conjoined with the alkaline solution, after it has been once or twice rejected." The pain having been quelled, the bowels should be swept out by a brisk purgative. When the jaundice appears to have been suddenly engendered, by moral causes, the rationale of its production is obscure; and the treatment has a corresponding uncerlaint)'-. The bile, retained or readmitted into the blood, is supposed to operate as a poison upon the nervous system. But the mental state which precedes and seems to occasion the jaundice, may possibly be itself the cause of the nervous symp- toms that follow. In other forms of the malady patients remain intensely yellow, often for a long time together, without becoming comatose, delirious, or convulsed. Not that this is conclusive. We know that a given poison may influence different persons very differently. The same dose of opium that will put one man to sleep, will stimulate a second to madness, and will have no sensible effect upon a third. In. the very complaint before us, one patient is tormented with a universal itching, which we attribute to bile in his blood ; and ten others remain free from that disagreeable feeling. If we were sure that the bile was the material cause of all the cerebra' symptoms, we might hope to draw some of the poison off by blood-letting : but we are not sure of this ; and reasoning upon the matter helps us not much towards the cure. The lesson which experience has furnished amounts to no more thaa this : that active purging is sometimes followed by evident amendment, and ultimate recovery. I would bleed also, if the ^jwZse warranted venesection, but not otherwise. In all the varieties of what, from its intensity and rapid accession, I may call acute jaundice, purging is strongly indicated : and we sometimes succeed in rectifying the whole morbid condition by thus applying a sudden lurench (so to speak) to the biliary organs; by giving, for instance, half a scruple or a scruple of calomel, and, a few hours afterwards, half an ounce of castor oil, with half an ounce of spirit of turpentine. When green jaundice arises from hepatic disease, we can only palhate. Mild laxatives and anodynes comprise all that such a state admits of. For the icterus gravidarum, delivery is the natural cure: it may sometimes be removed by the careful employment of aperients. The gall-bladder has its own diseases, which I do not stop to investigate, foi they seldom become the objects of specific treatment. Sometimes it is found shrivelled up, and nearly empty : sometimes enormously distended ; sometimes ruptured. Of these conditions, the distension of the gall-bladder is the only one that we can ever expect to recognize in the living body. The bag then projects beyond the edge of the liver, and is palpable externally, forming an elastic tumour in the right side. Authors lay down marks for distinguishing a distended gall-bladder from abscesses of the liver, and from an hydatid cyst ; but they are not much to be trusted to ; nor is the precise diagnosis of any great moment. The practical rule seems to be that, when the swelhng is adherent to the parietes of the abdomen we may punc- ture It, whatever is its nature : but under no other circumstances. I have already, incidentally, described most of the morbid states of the sphen 856 THE SPLEEN — NEPHRITIS AND NEPHRALGIA. which are susceptible of relief from medicine : especially the enlargement of that body constituting the ague-cake of the fens, and occuring in connection with inter- mittent fever ; and that other kind of enlargement which sometimes goes along with hsematemesis and melsena. The spleen is liable to tubercles also ; to deposits of other specific tumoui-s, and of bone ; and to softening of its substance. The best remedy for the ague-cake is the remedy for intermittent fever, qidna. Purgatives also have the effect of reducing hypertrophy of that curious organ. One caution enforced by Dr. Abercrombie, is, that in splenic disease, mercury should be sedulously avoided, or rather such an employment of mercury as would risk tender- ness of the gums. Dr. Williams, of St. Thomas's Hospital, states in a recent pub- lication, that he has made many trials of the bromide of potassium as a remedy in various disorders : but that he has satisfied himself of its utility only in cases of dis- eased spleen. Of this I know nothing. Again, it may seem a slight to the pancreas to pass it over without noticing the diseases to which it is subject. But really those diseases appear to be but few ; and they do not signify their existence by any plain or intelligible signs. I have, nine or ten times perhaps in my life, met with carcinomatous deposits in the pancreas. In every instance the head of the gland, that extremity which lies next to the bowel, has been the exclusive or the principal seat of the disease. I have known this change in the pancreas to cause jaundice, by obstructing the bile-ducts : I have known it in the same way to occasion very great enlargement of the liver itself; and I have known it to produce enormous and slowly fatal distension of the stomach by compressing the duodenum, and so preventing the free passage of the aliment through that gut. As to remedies for pancreatic diseases or disorders, I do not know of any. Diseases of the kidneys — and disorders of their function — and alterations in the fluid they secrete — require more consideration. And I proceed at once to the sub- ject of their inflammation; to nejihritis : and it will be practically convenient to lake nephralgia, or pain of the kidney, into the account at the same time. Nephral- gia is commonly, but not always, produced by the transit of a urinary calculus from the pelvis of the kidney, through the ureter, towards the bladder. This constitutes what is called, in common parlance, a fit of the gravel. The symptoms are these: — pain, sometnnes dull, but more frequently very severe, in the loins, usually on one side, and descending often along the track of the ureter of the same side ; numbness of the corresponding thigh ; in the male, retraction, and perhaps pain, of the testicle; a frequent desire to make water, which is generally high coloured ; nausea and vomiting. If to these symptoms there be added pyrexia, we learn the important fact that in- flammation is present : we have the symptoms of acute nephritis. The passage of gravel from the kidney sometimes does, and sometimes does not, provoke inflamma- tion of the gland. Nephritis is very seldom idiopathic. It may sometimes arise under the influence of cold : more frequently it is excited by calculous matter lodged in the kidney ; by a blow or fall upon the loins; by the internal administration of cantharides, or of turpentine. It is to the presence of fever that we look, to establish the inflammatory character of the renal affection Nephralgic pains require to be distinguished on the one hand from rheumatic, and on the other from colic pains. In lumbago there is pain in the back, and it may or may not be attended with fever ; but the pain usually aflects both sides, and is ag- gravated by such movements of the body as call the muscles of the loins into action, particularly by stooping. It originates, frequently, in some strain or efTort, of which the patient is made painfully conscious at the time. It is seldom accompanied by any notable trouble of the urinary functions. When rheumatic pain extends from the back into the thigh, it mostly follows the course of the great sciatic nerve, and is felt down the outer part of the limb ; whereas the pain that accompanies nephritis or nephralgia shoots rather along the track of the anterior crural nerve. Lastly, lumbar (tain, depending upon rheumatism, is not attended with nausea and vomiting. Thf pain of colic is often associated with sickness and retching ; and it may occupy NEPHRITIS AND NEPHRALGIA. 857 (hose parts of the abdomen which correspond to the place of the ureters. I'he uri- nary functions are undisturbed ; and this is a capital point of distinction. The numbness of the thigh, and drawing up of the testicle, are sufficiently characteristic when they happen ; but they are frequently altogether absent. Some years ago I was sent for by an exceedingly intelligent surgeon, who had been one of the house-surgeons at the Middlesex Hospital. I found him in bed. He told me he had pain in the abdomen. It had begun in the morning in the situation of the right kidney, and soon extended round to the right side of the abdomen and the groin. Two days before, he had experienced a similar attack of pain in the renal region, stretching round into the hypogastrium. When I saw him, he de- scribed the pain as lying more round the umbilicus than elsewhere ; and he expressed a strong persuasion, from the feelings which attended it, that it would be removed by free action of the bowels. But he felt nausea, and had vomited some medicine which he had taken. He had no fever, no retraction of the testicle or numbness of the thigh, and the pain was not increased by pressure. Neither had there been any marked irritation of the bladder. He said, indeed, when I questioned him on that point, that he thought he had made water rather more frequently than usual the day before. I mention this case to show you the occasional obscurity of the symp- toms. Here a well-instructed medical man believed that nephralgia, existing in his own person, was colic. To my judgment, however, it seemed most probable that a small calculus had been, passing from his kidneys, towards and perhaps into his bladder. I may as well tell you the event of the case, which interested me a good deal-; for it exhibits the train of symptoms that are apt to ensue after nephritic attacks, although in this instance they were but slightly pronounced. His bowels were well acted on by a purgative, and the next day he was free from pain, and apparently well. Two days after this, he had more frequent calls to pass urine than were usual with him, and having done so on one occasion, he presently felt the want again, and then passed a little blood. The urine had been of a clear amber colour throughout. At the expiration of two or three days more he called upon me to say that, after making water, he had perceived in the vessel a small crystallized mass, which he took out, supposing it to be (what it very much resembled) a fragment of sugar candy. In fact, he had been eating sugar candy, and thought some portions of it had fallen down between his waistcoat and shirt, and afterwards into the chamber-pot. He had the curiosity, he said (some misgiving he must have had, too, for I had told him my own opinion of the nature of his attack), to put a small crystal from this fragment into his mouth; and as.it neither tasted sweet nor dissolved, he suspected it might be a urinary concretion, and brought it to me. And sure enough it was so ; a piece of very pure oxalate of lime, which he had been fortunate enough thus to get rid of. It was a quarter of an inch in length, and less than one-eighth of an inch broad, consisting of an aggregation of small crystals. It was exactly similar in appearance and colour to a piece of brown sugar-candy of the same size. It would pass, long- ways, into a large crow-quill. That it was oxalate of lime, was proved in this manner. A little separate crystal was heated to redness on a piece of platinum foil, by means of a spirit-lamp and blowpipe. By these means the oxalic acid was destroyed, and quick-lime left. This residue, moistened, and pressed into a powder on a piece of turmeric paper, gave the characteristic brown colour. You see, then, that a nephritic affection may be mistaken for an attack of colic. In reference to practice, it would indeed be a mistake of no great importance, smce the remedies that are proper in the one case are generally proper, or not improper in the other. If the pain be attended with fever, antiphlogistic measures are alike indicated in each of the two diseases. The numbness of the thigh, and the drawing up of the testicle, are analogous phenomena to the pain which affects the shoulders in hepatic disorders. Irritation of one extremity of a nerve, situated internally, and belonging to an organ which is not endowed with a high degree of sensibility, causes sympathetic sensations in 3 w2 858 NEPHRITIS AND NEPHRALGIA. the sentient extremities of other branches of the same nerve, or of communicating nerves. And this sympathetic afTection of distant parts is sometimes attended (as I formerly observed) not merely with pain, but with some degree of inflammation also. The testicle occasionally swells, and becomes tender during a nephritic attack. On the other hand, as the nerves which communicate with those of the testicle or thigh, may or may not be implicated in the renal disorder, so we see how it happens that these curious symptoms, so instructive when they do occur, may frequently be wanting, as they were in the example I just now detailed to you. When the symptoms I specified in the outset are attended with fever, we conclude that we have to deal with nephritis ; and when inflammation of the kidney, how- ever produced, lasts for a certain period, without abatement, suppuration is to be dreaded. Such suppuration is marked, sometimes, by the supervention of rigors, by throbbing, perhaps, and it may be by a remission of the pain : but I beheve it may take place without throwing out any such signals. Nay, I think it probable that inflammation, confined to the parenchymatous substance of the kidney, may arise, and run through all its stages, without denoting its presence or progress by any noticeable local signs ; and that the sharp and peculiar symptoms ascribed by authors to acute nephritis manifest themselves only when the investing membrane of the gland, or its pelvis and excretory tubes, are involved in the inflammator}^ pro- cess. However this may be, suppuration leads to ulceration, to the formation of renal fistulse, to the establishment of a purulent discharge, and hectic fever; and finally, in most cases, to a fatal event ; whether the inflammation was at first idiopa- thic, or dependent on a calculus. I may illustrate these remarks, by stating the heads of a case which has occurred to me since this course of lectures began. I admitted Caroline Barnard, a married woman, forty years old, into the hospital, on the 18th of October. Among other things she complained of pain in the situation of the right kidney. She had been ill SIX weeks, and at the commencement of her illness her urine had been very turbid, as indeed it still was : and she had experienced much pain and difficulty in passing it, and after it had passed. From that time she had frequent nausea and retching, and occasional numbness of the right thigh. She had been losing flesh fast ; and her pulse was frequent. There was some tenderness discoverable in the right renal region ; and after a time a manifest fulness there, and hardness ; and at length oedema of the integuments and extreme tenderness. She suffered also well marked hectic fever, and had severe and repeated rigors. On the 4th of November, after a careful examination of the right loin, we satisfied ourselves of the presence of matter. I got Mr. Arnott, therefore, to see her, and put a lancet into the abscess ; and a large quantity of faint-smelling pus came out. She was greatly relieved by the operation ; and a purulent discharge, mixed \\\\\\ shreds of cellular membrane, came away in abundance for some days : but in time the discharge ceased, the swelling subsided, and the opening healed. We began to hope that it had been merely an abscess in the neighbourhood of the kidney, irritating it and affecting its functions. But in three weeks after the abscess was punctured, the swelling was found to have re- curred ; and she again began to suffer much. The tumour was again opened, and pus of a more offensive character than before evacuated. In the early part of De- cember she sank. We found the right kidney small, collapsed and hollow ; in some parts a mere flabby bag. On its posterior surface there w^as an opening, which formed a commu- nication between the interior of the kidney, and the abscess in the areolar tissue, which had pointed externally. The pelvis of the kidney was much dilated ; and the substance of the gland destroyed to a considerable extent, by suppuration and ulceration. The ureter, where it left the pelvis of the kidney, was found to be im- pervious. The other kidney was much enlarged, but of quite healthy and sound structure. That kind of compensation had occurred which I formerly mentioned as not unusual when, of double organs, one has been rendered incapable of its natural functions, and ine other takes up its duty and performs a twofold amount of work. The organ of NEPHRITIS AND NEPHRALGIA. 859 which the function is thus increased, becomes hypertrophied. This woman did not die because there was not urine enough secreted ; but she sank under the wasting punlent drain, the irritation and pain she suffered, and the protracted hectic fever. in this instance the inflammation and suppuration occurred independently of the for- mation of calculous matter. Sometimes the pus finds its way out of the body through the natural passages, and appears in the urine. This woman's urine was thought, by some of the pupils, to contain pus. Tt was quite thick, and of a yellowish colour. But heat rendered it transparent. You must not judge by a cursory look at the water. The effect of heat proved that the yellow material was not pus : the impervious condition of the ureter showed afterwards that it could not have been. When calculi exist in the kidney, they often betray their presence there, by causing bloody urine. But bloody urine may proceed from various causes ; and in conformity with my usual custom, I shall by and by offer you some general remarks on hsematuria, as one of the hemorrhages. I showed you, at our last meeting, that gall-stones might inhabit the gall-bladder in considerable numbers, and be quite harmless, unless they atteinpted to escape from their prison, through the very narrow channel of egress from it; and I intimated that the same observation was often applicable to urinary concretions. Renal calculi do, indeed, in many cases, produce abiding uneasiness, or frequently recurring pain, in the situation of the affected kidney, bloody urine, and gastric disturbance; especially when the concretions are shaken or displaced by sudden jolts, or jarring movements of the body ; or when the system is deranged by intemperate habits. But in many other instances these calculi cause no pain or annoyance, so long as they remain in the kidney ; although they inflict horrible suffering, in general, while, for the first time, they are forcing their way along the narrow ureter. A concretion cannot be formed in a moment ; 3'et the attack of pain often comes on in a moment, without any previous warning. After a while it remits, perhaps, as suddenly'- ; the calculus having passed (it may be presumed) from the ureter into the bladder; and then in- dications, more or less palpable, usually begin to declare themselves of its presence in that reservoir. Moreover, it is not uncommon to find calculi in the kidney alter death, of the existence of which there had been no symptom manifested during hfe. The /reo/menf of nephritis — or of the nephralgia calculosa, when accompanied by fever, or occurring in young, strong, and plethoric persons — is just such as would be proper in cases of severe colic, or enteritis : and therefore it is that any mistake between these disorders at the outset is not of so much practical consequence. The objects of treatment are, to arrest the inflammatory process ; to quiet existing irritation ; and to obviate any fresh causes of irritation. Venesection, therefore, in proportion to the strength of the patient and the violence of the symptoms, will sometimes be proper: and it will always be advisable to take away blood freely from the neighbourhood of the suffering part by cupping. Warm fomentations ; the warm bath ; the injection of warm water into the bowel ; these are all expedients of which practical men ac- knowledge the value. The warm enemata not only clear out from the large intes- tines any irritating matters they might contain, but, from the proximity of the colon to the kidney, they perhaps have the effect of an internal fomentation. It is desirable also to get the bowels well acted upon by purgative medicines as soon as possible: the relief that follows free alvine discharges is often very marked. There is some- times a difficulty, from the irritability of the stomach, in administering purgatives by the mouth. Calomel, however, will often be retained, when other substances are rejected. It is generally considered of importance to give those purgatives only which are not likely, after being absorbed into the blood, to irritate the urinary pas- sages. On this account the saline purgatives are to be avoided. Nothing is so good as castor oil, if the stomach will bear it ; or infusion of senna, with manna, may be used ; or, if the stomach be very quesisy, pills, composed of cathartic extract, and calomel. When there is no fever, i. e., when the case is one of nephralgia, and a calculus IS passing, after the intestinal canal has been cleared by a purgative, 't will be 860 GRAVEL. necessary to give opium in full doses to allay the pain : and it may either bo adiTi mistered in the form of pill through the stomach ; or introduced into the rectum. When a person suffers what is called a fit of the gravel, the pain, I saj?^, is at length very suddenly relieved, in general, in consequence of the calculus having emerged from the ureter and entered the bladder. We judge that this has taken place, first, by the cessation of the pain ; and secondly, by the supervention, sooner or later, of symptoms indicative of stone in the bladder ; viz., a more than usually frequent in- clination to make water; pain, referred to the extremity of the urethra, especially just after passing urine : and stoppages and renewals of the stream of water while the patient is endeavouring to void it. The time which a calculus takes in travelling from the kidney to the bladder varies a good deal. The painful journey may be over in a few hours; or it may last two or three days. More rarely the symptoms continue, with irregular intervals of comparative quiet, for weeks. And sometimes, notwithstanding the peculiar pain, which amounts to torment, all morbid symptoms cease, and yet no calculus has passed, apparently, into the bladder : none, i. e., of the symptoms of stone, ensue ; no calculus is voided by the urethra ; and none found in the bladder when the patient at length dies. What is the explanation of these circumstances ? Why, as calculi have been discovered in such cases in the kidney, it has been supposed that a concretion may get into the very beginning of the ureter, where it is a little larger than elsewhere, and give rise to the peculiar symptoms, yet never pass fairly into that narrow tube ; but at length fall back again into the pelvis of the kidney ; when the symptoms cease. But the same symptoms undoubtedly occur, occasionally, when there is no cal- culus at all. Sir B. Brodie has referred to this form of complaint. In people who live intemperate and luxurious lives, pain is apt to seize upon one renal region, and to extend round and'downwards into the groin : and these symptoms will be followed by frequent, difficult, and painful micturition, the urine being unusually acid, high- coloured, and sometimes turbid. The whole irritation appears to be produced by this unhealthy urine : at least the complaint vanishes after cupping the loins, purging, the warm bath, and two or three full doses of colchicum given at short in- tervals. Sometimes the little stone becomes immovably wedged in the canal of the ureter. If it completeljr shuts the tube, the urine accumulates behind it, and that portion of the ureter dilates. The obstruction usually proves fatal, by its influence upon the functions of the kidney, and thereby upon the whole economy. But if the urine finds a passage by the side of the impacted concretion, this danger is averted, or post- poned. When we have reason to believe, from the nature and course of the symptoms, that a calculus has come down from the kidney, and lodged in the bladder, then it becomes an object of deep interest to the practitioner, and of fearful importance to the patient, to try all means to bring about its expulsion before it grows too large to be voided. For grow it almost surely will, by the continual accretion of earthy matter upon its surface, if it remains long in the bladder. We know that it may, af first, be voided, provided the urethra be in a healthy and natural state ; that what- ever has passed through the ureter, may pass through the urethra also. The objects to be kept in view are these : first, to procure a plentiful secretion of bland urine, wherewith the bladder may become filled ; secondly, by lulling the sen- sibility of the parts concerned, to prevent or lessen that spasmodic effort of the sphincter of the bladder, which the presence of the calculus is apt to provoke ; and, thirdly, to ascertain that the channel of the urethra is open and unimpeded. To effect the first of these purposes, the patient should be instructed to drink freely of diluent liquors; such as barley-water, or linseed-tea, in which may be mixed a small quantity of the sweet spirits of nitre. To fulfil the second, he should take a full dose of opium at bed-time. By these means the pain and irritation which may have been produced by the calculus, will be soothed ; and the bladder will gradually fill He should then make water, having first placed himself in such a position GRAVEL. 861 that the outlet of the bladder shall be at the lowest part of that receptacle. He may etand up, and lean forwards ; or it may be well to make wator while kneeling, in a warm bath. If these expedients are not presently successful, the urethra may be cautiously expanded, and habituated to the contact of a solid body, by the daily in- troduction of a full-sized bougie. Sometimes the calculus will follow the bougie, as it is withdrawn, through the urethra. In this way the patient will have a fair chance of getting rid of the stone. In this way a very near friend of my own, a physician now practising in this town, did expel a formidable, though not very large, piece of rough oxalate of lime several weeks after its entrance into the bladder. Out it came, at last, with a smart clink, which was music to his ear, against the chamber-pot. A gentleman was not long since sent up to me from Kent, by a former pupil of this College, with the following history. About a month before he had been suddenly attacked with acute pain in the loins, extending forwards into the left flank and pelvis, with nausea and vomiting. For nearly ten days these symptoms con- tinued to occur at intervals ; then they ceased : and then he began to be troubled by a frequent and very urgent inclination to make water, and by pain after voiding it, just above the arch of the pubes. I gave him directions, in accordance with the plan just now mentioned ; and wished him to allow some surgeon to explore the contents of his bladder. To this he would not, as yet, he said, consent. I saw him on the 2d of August. He returned into Kent the next day. On the 5th, while taking a walk, he was seized with a most imperative desire to make water, but found that he could part with none. Concluding that a calculus had entered, and stopped up the urethra, he was proceeding homewards, but was soon constrained again to try to empty his bladder : and then he had the satisfaction of feeling, and seeing, a stone fly out with great force : but, as he had turned towards a hedge, he could not find it. From that moment he was quite easy. When a calculus of a certain size has once traversed the tubes that lead respect- ively to and from the bladder, others sometimes follow it with more ease. I show you here a large concretion which was passed, or pissed if you will, by a patient of mine without his knowing it. He is subject to epilepsy, which is probably eccen- tric, and excited by renal disease. He is closely and anxiously watched by his wife. One day last year she noticed that the urine he had just voided was shghtly tinged . with blood : and she then found this oblong stone, which is composed of hthic acid, in the vessel. If the renal calculus, after it has reached the bladder, cannot be got rid of by the expedients I have been recommending, the question arises, whether medicine can do any further good, or whether the patient is to be delivered over to the surgeon. Most of these small concretions admit of being mechanically crushed into smaller fragments, which are then readily washed out by the stream of urine. Larger stones are extracted entire, through incisions of the bladder. Yet there are many cases in which, for various reasons, surgery declines to attempt the removal of vesical calcuh. Medicine still offers to these unfortunate patients the means of mitigating, at least, their sufferings. But it often can do more than this. It is very important for you to know that judicious medical treatment may retard or prevent, and that injudicious medical treatment may promote and hasten the enlargement of such calcuh. Let ns briefly consider the principles by which our judgment and our practice, in this serious matter, must be guided. I have described a fit of the gravel. We say that a patient has the gravel when he passes concrete matter with his urine, whether in the form of powder, of grit or sand, or of more massive calculi. We do not apply that term to the cases in which the urine is clear when recently voided, and warm ; but throws down an earthy sedi ment as it cools : which sediment redissolves if the urine be again artificially heated Now, besides the different forms which the gravel assumes, of powder, sand, and little stones, there are (as you may have guessed from certain terms that I have been obliged to employ) several kinds of gravel ; differing, I mean, in their chemical com position. The main signs — the pain, the sickness, the affection of the testicle, the subsequent bladder symptoms — are much the same, whatever be the nature of the solid matter that descends from the kidney, and fingers in the bladder. But other 862 LITHIC DIATHESIS. circumstances difTer widely. The qualities of the water previously to the formation, and to the discharge, of the sabulous matter ; the state of the system at large. And it is quite impossible to treat cases of calculus in the kidney, or of stone in the bladder, v.'ith propriety, or safety, without constant reference to the condition of the urine. The morbid states of that secretion are of the greatest interest. I cannot undertake to enter upon the subject in much detail. Yet some outline of it I must attempt, especially where it touches upon points of practice. You know, probably, that the urine voided by a person in health alwaj's exhibits acid properties, always turns Htmus paper red. Not that healthy urine contains a free acid ; but only (according to Dr. Prout, who is the great authority in these things), that certain of the alkaline and earthy bases are not exactly neutralized, but exist in the state of supersalts. The pure lithic acid is nearly insoluble ; but the lithate of ammonia is very readily soluble : and it is this which reddens the vegetable blues. Now, whether out of the body, or within it, the lithate of ammonia will, of course, be decomposed, if any acid be present in the urine, for which ammonia has a stronger affinity that it has for the lithic acid : and the latter will be thrown down, in the form of a red sand : little crystals, in point of fact, they are very much like, in shape, size, and colour, to the particles of Cayenne pepper. I show you some collected by one of my out-patients at the hospital. He must have passed a peck of it while under my observation : and I am sorry (having lately lost sight of him) that I did not procure a large quantity for the museum. Now this lithic acid, or red sand, or gravel, is liable to form in the kidney, if not in the bladder, and to concrete into calculi ; and the calculi once formed, or, indeed, any solid substance, will constitute a nucleus, upon and around which a further and repeated incrustration of a similar nature is almost sure to take place. You will at once perceive the importance of doing nothing to aggravate this disposition to deposit lithic acid ; but of trying to prevent, or stop it. If there be symptoms of stone in the kidney, or in the bladder, and we have reason to believe that it consists of lithic acid, there are medicines which would tend to render matters worse, and there are others of which the effect would be to correct the lithic acid diathesis, as it is called. But how are we to know whether the presumed calculus be of that kind or not ? or, rather, how are we to know that the lithic diathesis exists ? Why, we learn that it exists by noticing the habitual qualities of the urine, and the habitual state of the patient's general health. In the urine of persons who have the lithic diathesis, you will find that there are frequent deposits, after it has become cool, of reddish sediments, looking like brick- dust, and, therefore, called lateritious. These sediments consist chiefly of the lithate of ammonia, tinged with certain colouring matters in the urine. Sometimes pure lithic acid appears, in the shape of fine sand, or in larger crystals. The urine itself is bright, of a dark coppery colour, hke brown sherry. It is more acid than the urine of health, and gives to litmus paper a deeper shade of red. It is apt, too, to fall below the average quantity. The presence of this diathesis is likewise accompanied, and so far denoted, by a tendency to feverish and inflammatory complaints. The patients are troubled with acidity of stomach and heartburn ; many of them are subject to gout or rheumatism. They are mostly also indolent and luxurious, or intemperate in their mode of fife. Adults are peculiarly obnoxious to this condition of the system after the age of forty. But children, up to the period of puberty, are very liable to have lithic acid gravel. Whenever a paroxysm of nephritic pain befalls a person whose time of life, whose habits, the characters of whose health, and the habitual qualities of whose urine, are such as I have been describing, you may conclude that the concretion which has occasioned the symptoms is of the Hthic acid kind : and you may expect that such attacks will recur; for it is observed of these lithic acid renal calcuii", that they are generally numerous in the same individual. I speak of the habitual — or of the fiequently recurring — qualities of the urine : for a deposit of lithic acid gravel, or of superabundant lithates, may occur to the healthiest individual, under accidental and transient disturbing causes. Many persons will tell you that their water becomej Iffi LITHIC DIATHESIS. 863 turbid with red sand whenever they have a cold. Febrile and inflammator} aihnents will produce the sediment : even too full a meal: or exercise taken immediately- after a full meal. In all such cases it seems probable that the customary evolution of lactic acid through the skin is somehow prevented : in consequence either of a check given to the perspiration, or of imperfect assimilation of the food. The lactic acid, thus diverted from its natural emunclory — or some other acid generated within the system — is determined to the urine, and precipitates the lithic. Now the formation of lithic acid, and of the lithates, may be controlled by the exhibition of alkaline remedies. You will find that free livers use alkalies to neutralize the excess of acid which results from their intemperate habits ; the carbonates of soda, or of potass. They do this, without any reference to the appearance of their urine, to prevent or appease the uneasy feelings produced by a debauch. But it is of im- portance to be aware that one of these alkalies is preferable, for the purpose of obviating the lithic acid diathesis, to the other. Soda will sometimes combine with the Hthic acid, and form an insoluble salt, as hard, and as pernicious, when deposited around a nucleus, as the lithic acid itself. With potass there is no such danger. If it should combine with the lithic acid, the resulting sak is perfectly soluble, and will pass away dissolved, in the urine. Magnesia is also a good medicine in such cases ; but it has this disadvantage, as I showed you indeed before, that it is apt, when taken habitually, to cause intestinal concretions : and these may be as dangerous as the urinary ones. One of the best modes of giving the bicarbonate of potass is in the common saline draught. The stomach has the power apparently of destroying the vegetable acids; and the remedial properties of the bicarbonate become thus equally certain with those of the pure alkali, while it is much less likely to derange or dis- agree with the stomach. Of course the mode of living ought to be changed when the lithic diathesis prevails ; the patients should dine moderately and plainly, eating of one dish, and avoiding acids, and all articles of diet likely to generate acid in the stomach; saccharine substances, therefore, and fermented liquors. But, as I men- tioned in a former lecture, they will not, if they can help it, give up their accus- tomed indulgences : and they attempt, and we attempt, but the attempt is often made in vain, to remedy disorders, which might with ease and certainty have oeen prevented. You must take care not to give these alkaline remedies too long ; nor in too great quantity. You must not push them to such an extent as entirely to destroy the acidity of the urine : for if you do, your patient is exposed to the same danger as before, but from an opposite cause. A white sand or gravel will be apt to form in the alkaline or neutral urine : and this will collect itself, by the force of aggregation, around any existing calculus, or foreign substance. The white deposits consist mainly of the triple phosphate of ammonia and magnesia; and if you examine collections of urinary calculi, you will find that they are sometimes made up of concentric layers ; and one layer may be composed of lithic acid, and the next of the triple phosphates ; and so on, as the condition of the urine has alternated. You must test the urine, therefore, and see that it still reddens litmus, though perhaps famtly. Indeed it may do so, without containing any free acid : so that urine which only slightly reddens litmus paper may nevertheless be capable of depositing the triple phosphate. The saline draught has always a tendency to make the urine alkaline ; and thus it is, probably, that it proves of use in febrile disorders : but it is an absolute poison to those whose urine is already alkaline. Colchicum has a similar tendency to diminish the acid reaction of the urine. So has mercury. And I may tell you — speaking generally of morbid states of the urine — that it is much more easy to correct too great acidity than to rectify the opposite condition. We can almost always make acid urine neutral or alkaline : but to render alkahne urine acid is often beyond our power. It is scarcely less important to attend to the functions of the skin, in persons having the Hthic acid diathesis, than to the functions of the stomach. The warm bath is often an excellent adjuvant, in their treatment. In cold weather, warm clothing must be enjoined ; and the avoidance, in all weathers, of such exposure to cold as mighl suppress or materially lessen the amount of healthy perspiration. 864 PHOSPHATIC DIATHESIS. You will have gathered, from what I have already said, that there is a morbid condition of the system, the opposite of that in which the lithic diathesis prevails. The phosphatic diathesis, namely ; in which there is a readiness to deposit ivliite gravel ; composed of minute shining crystals of a triple salt, the phosphate of ammo- nia and magnesia. The way in which this is formed, according to Dr. Prout, is as follows. Healthy urine contains the phosphate of magnesia, which is very soluble ; and, therefore, is dissolved in that fluid. But, under certain circumstances, the urea of the urine becomes decomposed in the kidneys, and ammonia is extricated, which combines with the phosphate of magnesia, and forms an insoluble triple salt. Some- times with the triple phosphate just mentioned, there is also an admixture of phos- phate of lime. It is a fact of great practical importance, that the tendency to the formation of the phosphates goes along with a debilitated condition of the system. Persons who have been rendered weak and feeble by overmuch toil, by mental anxiety, by insufficient nourishment, are very apt to pass water that is alkalescent or but faintly acid, and to exhibit the tokens, in their urine, of the phosphatic diathesis. They are, for the most part, cachectic, sallow, languid, spiritless, exhausted. The urine itself is pale, copious, slightly turbid or opaline, of a low specific gravity, and it does not smell like healthy urine : sometimes it has somewhat the faint odour of weak broth. It IS occasionally alkalescent when voided ; never more than slightly acid. As the urine cools, the white sand is thrown down ; and in many cases a sort of film is formed upon the surface of the water, exhibiting, as you see it in different hghts, all the colours of the rainbow : an iridescent pellicle. This has been found to consist of the triple phosphate. If you skim the pellicle off, by placing a bit of paper under it, and then suffer the paper to dry, you may distinctly see the little crystals. Urine of this kind speedily grows putrid and highly offensive. Sometimes it has a strong ammoniacal smell. You may estimate the intensity of the phosphatic disposition by the rapidity with which the urine becomes alkalescent. Occasionally the salt is so abundant that it is thrown down while the urine is still in the bladder ; and the last portions of the issuing stream look milky. Anything which tends further to depress the powers of the system will aggravate the phosphatic diathesis. When you find that your patient passes urine such as 1 have been last describing, which does not redden litmus paper, but on the contrary turns litmus paper that has been reddened by a weak acid, blue again, or even in some cases is alkaline enough to make turmeric paper brown — in such cases you must cautiously abstain from all remedies that are calculated to lower the vital powers ; from saline draughts, and alkalies of every kind ; from mercury and col- chicum ; from bleeding ; and even from active purgation : or j^ou will add to the patient's dangerous weakness ; and promote the more abundant deposit of the alka- line phosphates. But you may do more than abstain from what is hurtful : you may counteract the phosphatic tendency by a generous diet and by the exhibition of tonic medicines ; bark, wine, and acids ; the muriatic acid, or the nitric, or both too-ether, may be given in such cases with vast advantage sometimes. Opium is also a remedy to be employed in this form of disease. No single drug probably has so much power in rendering alkahne urine acid, as opium. And it is indicated for other reasons ; it composes the nervous anxiety to which these patients are mostly a prey. Mental relaxation — freedom from care — the relinquishment of all exhaust- ing habits and pursuits — these, too, are points of vast importance, whenever they are attainable. I should state that the tendency to deposit the mixed phosphates, though sometimes idiopathic, is much more often consequent upon local disease in some part of the uri- nary organs, especially in the bladder and prostate gland. It is also a frequent result of certain injuries of the back. There is yet another diathesis sufficiently common and important to claim your best attention. I mean the oxalic ; in which there is a tendency to the formation, in the kidney, of the oxalate of lime, or mulberry calculus ; an epithet derived from the occasional resemblance of the concretion to that fruit, in respect to colour and OXALIC DIATHESIS. 865 inequality of surface. This diathesis is not so obvious as the other two, but it is no less real. The urine differs much in its sensible qualities from that of both the precedino- varieties. Unlike the urine of the phosphatic diathesis, it is bright and clear; un- like that of hthic, it is remarkably free from sediment. The mulberry calculus is soUtary also ; or recurs at long intervals ; and the diathesis prevails chiefly durincr the prime of hfe. In both these particulars the contrast with the lithic diathesis is striking. The persons who manifest this disposition are usually dyspeptic ; sometimes very much so; sometimes very slightly. They are uneasy during the assimilation of their meals ; suffer flatulence when the stomach is empty ; prefer vegetable diet to animal ; are fond of sweets, especially of sugar. They are liable to boils and carbuncles, and to scaly cutaneous eruptions. According to their original tempera- ment, they are nervous and irritable, or dejected and desponding in rnind. A neph- ritic attack relieves them from all this discomfort for years perhaps. When the oxalic diathesis is strongly marked, the skin. Dr. Prout says, "is apt to assume an unnatural appearance, difficult to describe, but the colour of which may be said to vary from dull greenish yellow in the sanguine, to dark olive or livid in the melan- cholic temperament." The formation of the oxalate of lime within the body depends, according to Dr. Prout, either upon the non-assimilation of oxalic acid taken with the food, or upon the mal-assimilation of saccharine aliments. Hence, as a general rule, both curative and prophylactic, sugar and other saccharine substances should be rigidly excluded from the diet of these patients. They should avoid, also, all kinds of fermented liquor. The young stalks of the jV«<6ar6-plant, which of late years have come into such general use in this country for tarts in the spring; and sorrel, of which our neighbours, the French, consume a good deal in salads, and in other ways ; both con- tain oxalic acid ; and hard water contains lime. Dyspeptic persons who drink such water, and eat such articles of food, and are thus daily introducing, without suspect- ing it, the consthuent ingredients of the mulberry calculus, are vexy hkely indeed to incur the pain and the exceeding peril of a renal concretion of that kind. You must see, therefore, the great importance of detecting the oxalic diathesis ; and of forbid- ding, to those who have it, all such viands as contain the oxalic acid, and of recom- mending them to use pure water, even distilled water, for drinking. Animal food, and the stronger farinaceous matters, are best for them. Dr. Golding Bird refers the oxalate of lime to a different source : maintaining that it results from a re-arrangement of the elements of urea, whereby oxalate of ammo- nia is formed in the first instance ; and afterwards oxalate of hme, by the decompo- sition of the calcareous salts natural to the urine. Agreeing with Dr. Prout that the mulberry calculus is not of very frequent occur- rence — Dr. Bird nevertheless finds that small crystals of the oxalate of lime are extremely common : although from their transparency, and from their having nearly the same specific gravity with the urine in which they exist, they do not "disclose themselves to the naked eye, nor sink down in manifest deposit. They are made plainly visible by the microscope. The same writer slates that the persons whose urine is thus charged with crystals of oxalate of lime are, for the most part, highly sensitive and irritable, hypochon- drically apprehensive of impending evil, full of gloomy fears concerning their bodily and mental powers, dyspeptic, weak, and usually emaciated. With respect to direct remedies for this diathesis, Dr, Prout tells us that he has •«een more benefit derived from the mineral acids, alone or combined with tonics, than from any other. But the effects of these acids must be watched : and when' iney begm to produce a deposit of the hthate of ammonia, or of lithic acid, their use must be suspended. He recommends to patients who happen to be at a distance, the muriatic, or nitro-muriatic acid, till the hthate of ammonia, or hthic acid, begins to appear in the urine ; or for a month. " By adopting," he says, " such a course of acids tiinse or four times in the year, and by carefully regulated diet, I have seen 55 3x 866 SUPPRESSION OF URINE. the diathesis gradually subdued, and at length removed altogether." Dr. Bird also testifies to the efficacy of similar measures. These observations will serve, I hope, in some degree, as landmarks, to guide your treatment of patients labouring under renal or vesical calculi, or presenting symptoms such as warrant the apprehension that disorders so fearful may occur. It is impossible for me to do full justice to this interesting subject in these lectures; and I must refer you, for more minute information respecting it, to Dr. Prout's invaluable volume ; to Sir Benjamin Brodie's most instructive book on the Diseases of the Uri- nary Organs ; and to an excellent work recently published by Dr. Golding Bird, on Urinary Deposits. LECTURE LXXVII, Suppression of Urine. Diabetes : Qualities of the Urine ; Symptoms , Anato- mical Appearances ; General Pathology of the Disease ; Treatment. Diuresis. Systematic writers have adopted the term Ischuria to express that condition in which no urine is voided. It includes, therefore, those cases in which no urine is secreted ; and those in which, although secreted, it is not discharged from the body. Now these two conditions are exceedingly different from each other in most respects ; and I shall prefer making use of the two plain English names, suppression of urine, and retention of urine. Even these terms are sometimes confounded with each other. In suppression, the secretion is suspended : in retention it may be as active as ever. Retention of urine is a surgical case ; involving points of great practical interest. Suppression belongs to the physician : and the technical term for it is Ischuria renalis. It is sometimes spoken of as paralysis of the kidney ; a phrase to which I object, because I think palsy is a word which ought to be restricted to a loss of power over the muscular fibre. This affection usually occurs in persons who are advanced in hfe, and inclined to corpulency. Why it should be so I cannot tell you, but such is the fact as stated by most observers. Sir Henry Halford has related one of five instances of this dis- ease that he had met with in the course of seven-and-twenty years. He says it was an exact copy of all the others that had fallen under his notice : and as his account of the general course of the symptoms coincides with the statements of other writers, I may give you his narrative, in lieu of a formal description. "A very corpulent robust farmer, of about 55 years of age, was seized with a rigor, which induced him to send for his apothecary. He had not made water, it appeared, for 24 hours. But there was no pain, no sense of weight in the loins, no distension in any part of the abdomen : — and therefore no alarm was taken till the following morning, when it was thought proper to ascertain whether there was any water in the bladder, by the introduction of the catheter : and none was found. I was then called (says Sir Henry), and another inquiry was made, some few hours afterwards, by one of the most experienced surgeons in London, whether the bladder contained any urine or not: when it appeared clearly that there was none. The patient sat up in bed, and conversed as usual, complaining of some nausea; but of nothing material in his own view : and I remember that his friends expressed their surprise that so much importance should be attached to so little apparent illness. The patient's pulse was somewhat slower than usual; and sometimes he was heavy and oppressed. " I ventured to state (continues the author) that if we should not succeed in making the kidneys act, the patient would soon becor.ie comatose, and would probably die the following night : for this was the course of the malady in every other instance that 1 naa seen. It happened so ; he died in thirty hours after this, in a state of stupe- faction " This is the curious and important point in the history of such cases. If no urine l>e separated from the blood, coma soon supervenes, and death. It is beheved that SUPPRESSION OF URINE. 867 *hese consequences result from the detention of urea in the system. Urea is a mere excrement, which, in health, is removed from the blood by the kidneys, as fast as u enters that fluid. When it is not so carried off', it accumulates in the blood, circu- lates with it to every part of the body, and acts as a poison, especially upon the brain. This is one of several cases, showing that the carrying fluid of the body may become the vehicle of disease and death, if it be not duly purged of deleterious mat- ters which pertain to the unceasing processes of organic life. If carbonic acid be not extricated by the lungs, the animal functions are as certainly and almost as speedily extinguished by that gas, as the flame of a taper might be. And we have recently seen that when the outlet from the liver is shut up, when the blood is not purified from the excrementitious bile, the powers of animal life are weakened, and sometimes utterly and rapidly destroyed. Suppression of urine, for a considerable time, is not, however, necessarily and universally fatal. Patients labouring under the epidemic cholera would secrete not a drop of water for some days ; and yet recover. It was remarkable how entirely free such patients were from any approach towards coma. Was the urea here drained off' from the blood in the enormous and unnatural flux from the stomach and bowels ? I think it probably was : but I do not know that any chemical search was ever made for that substance in the fluids so effused. There are, however, sonrie very singular instances on record of persons who have passed days and even weeks without secreting urine ; and without showing any other indication of impaired health. What degree of credit such narratives deserve I do not know ; but assuming that there was neither fraud nor mistake, it may be suspected that either the natural secretion was compensated by some vicarious or supplemental discharge ; or that a small quantity of urine was actually separated by the kidneys. " If any water, however small the quantity (remarks Sir Henry Halford), had been made in these cases, I should have thought it possible that the patient might have recovered : for it has often surprised me to observe how small has been the measure of that excre- mentitious fluid which the frame has sometimes thrown off', and yet preserved itself harmless. But the cessation of the excretion altogether is universally a fatal symp- tom in my experience, being followed by oppression on the brain." The same emi- nent physician states that in three of his five cases there was observed a remarkably strong urinous smell, in the perspiration, for twenty-four hours before death. This I believe is of common occurrence in such cases. Other patients have vomited, or passed by the bowels, watery matters possessing some of the sensible qualities of urine : and a urinous fluid is said to have been found in the ventricles of the brain in some of the fatal examples. I have spoken of suppression of urine as a malady, though it probably is never anything more than a symptom. Yet it is one of those symptoms which, from our uncertainty respecting their origin and determining cause, we are obliged to treat, and to study, as if they were substantive diseases. In the only well-marked instance that I have seen of suppression of urine coming on in an apparently healthy person, some blood had appeared in the urine for a day or two before the secretion was totally suspended ; and the kidneys were found gorged with blood. Extreme con- gestion, or inflammation, of the substance of the gland, is probably at the bottom of many of these cases. The same train of symptoms supervene not unfrequently upon organic renal disease. They happen, too, when the ureters become impervious from disease, or from impacted gravel. In this condition urine continues to be secreted, for a time at least, and distends the ureter behind the seat of the obstruc- tion. The apoplectic state which ensues may arise from a re-absorption of the fecreted fluid ; or, in consequence of the obstacle, the secretion itself, after going on to a certain point, may stop, and then the case becomes a case of suppression. Respecting the treatment of this formidable condition I can say but little. Cup ping upon the loins, venesection, if warranted by the state of the pulse, the hot bath, sudorific medicines, purgatives, and large warm enemata, seem to me the kind of remedies indicated. To endeavour to force the secretion of urine by strong stimu' lating diuretics, would strike one, a priori, as being hazardous. Yet this practice has its advocates ; and should experience declare in its favour, theoretic objections 868 DIABETES. ought to be disregarded. If benefit is so to be obtained, probably the best drug for our purpose would be cantharides. Dr. EUiotson refers to some examples of its success in the hands of Sir Astley Cooper ; and afterwards of another practitioner who took the hint from Sir Astley. He suggests that as the tincture of cantharides is a very uncertain preparation, the remedy should be given in the solid form, a grain at a time, and that a large bhster should be laid upon the loins. Beyond these hints I am unable to give you any assistance towards the management of this obscure but serious complaint. The opposite condition of the kidney, in respect to its peculiar function — that, I mean, in which its secretion is largely and morbidly augmented — is scarcely less fatal than the total suppression we have just been considering; but it is not so rapidly fatal. When the amount of urine secreted and passed is permanently too great, when it is constantly running off, as it were, from the system, the patient is com- monly said to have diabetes: from 5taf3aww, to pass through. But it is not every case of an excessive flow of urine that deserves to be called diabetes. Great quantities of aqueous urine are passed by hysterical and nervous patients. We all make more water in cold weather than in warm ; the functions of the skin and of the kidney compensating each the occasional defect of the other. Certain drugs and articles of diet are also well known to cause a temporary excess in the amount of urine secreted. In fact, although the quantity of urine voided is the most obvious and striking symptom of diabetes, its definite and characteristic symptom is a most remarkable change in the quality of that liquid: in its becoming loaded with sugar. You will find, indeed, two species of diabetes mentioned by many authors — the diabetes in- sipidus, and the diabetes mellitus. The former term ought in my opinion to be abolished. If it refers merely to an unnatural abundance of urine, not otherwise differing in its composition from healthy urine than in containing a large proportion of water — by calling such a state diabetes, we hnk together in the same genus two essentially different conditions. In true diabetes the urine is never without sugar. The quantity may indeed be small ; and it may not be sensible to that coarse test, the taste : but modern observers almost all agree in rejecting any species of diabetes, in which the urine is not at all saccharine. The sensible qualities of diabetic urine differ strikingly, in many particulars, from those of the urine of health. Its chemical quahty differs strikingly too, as I have already told you ; but it is in one particular only. Fortunately, no extraordinary skill is required to recognize the morbid secretion. Diabetic urine is light-coloured, and transparent ; of a pale straw, or greenish tint. Its odour is peculiar. According to Dr. Prout the scent somewhat resembles that of sweet hay, or that of milk ; but to my nose it is more like the faint smell of certain apples, or rather of an apple chamber. Its taste is, more or less decidedl)^ sweet. Notwithstanding its limpM and aqueous appearance, diabetic urine is remarkably heavy. It was long believed that the quantity of urea in diabetic urine was reduced much below the natural standard ; and that the sugar was somehow formed at the expense of the urea. Dr. Prout, in his earlier researches, always detected a little, and but a little, of this peculiar principle. Later observations have shown, however, that the urea is not so scanty ; nay, that it is generally as abundant as in the urine of health, and sometimes even more so. The presence of the sugar conceals the urea ; inter- feres with the action of the ordinary tests of that substance. By certain modes of procedure, which I need not stop to descrine, the urea may readily be discovered : and it is often found, I say, to be rather excessive than deficient. The usual saline matters belonging to healthy urine are present also in that of diabetic persons ; and m the same relative proportions; but, as might be expected, their absolute amount, m a givon quantity of the liquid, is very much diminished. In short, the only essen- tial deviation from the standard chemical constitution of the urine is, that it holds in solution a quantity of sugar. This explains its peculiar odour, its sweetness, and perhaps its excessive quantity. It accounts also for another very characteristic pro- DIABETES. 869 perly of diabetic urine ; I mean its high specific gravity. In general, you know, the specific gravity of the urine is inversely proportional to the quantity secreted in a given time ; the more copious and dilute it is, the lighter it is. But in diabetes, so strong is the saccharine impregnation that the specific gravity more than keeps pace with the increased quantity of the liquid secreted. The specific gravity of diabetic urine is always much higher than that of healthy urine. The quantity of urine secreted and voided is sometimes enormous : far more than could be supphed by the quantity of fluid taken as a drink, although that, as I shall presently explain, is excessive too. A healthy person passes from one to three or four pints of urine in the twenty-four hours. The quantity, as you well know, is liable to considerable variation : perhaps the average may safely be laid at about forty ounces. But patients in diabetes will void 40 pints in the same time. I have myself seen 26 ; 13 or 14 are not uncommon ; and cases are recorded by writers of credit and veracity, in which 70 pints were passed daily. Nay, one Italian author declares that 200 pints have been discharged in that time. The saccharine matter thus held in solution may be obtained in its solid form, by evaporating the urine. I have seen large flat cakes of beautifully crystallized diabetic sugar. It differs somewhat from common sugar, the produce of the sugar cane ; and approaches more nearly to the sugar of grapes. By rapid evaporation of the water a thick syrup is procured resembling treacle ; but Dr. Maclntyre, who has presented to our hospital-museum some very perfect specimens of this sugar, prepared by Mr. Blandford, informs me that to get it well crystallized, the evaporation in a steam bath should be stopped while the urine is still of thin consistence. It may be quickly re- duced to one-half, perhaps, of its original quantity. Then it should be set aside, in shallow plates ; and in the course of ten days or a fortnight the sugar will be depo- sited in a regularly crystalline form. The sugar is sometimes so abundant, that it undergoes a rude crystallization as the urine dries, wherever it happens to fall. A girl who was in St. Bartholomew's Hospital, while I was a student there, observed th^t if her water was accidentally sprinkled upon her black stuff shoes, every drop left a white powdery spot behind it. So also an aged patient under Dr. Maclntyre's care expressed to him her alarm at finding that her black worsted stockings were covered with a white dust, from the same cause. A man recently under my charge in the Hospital, complained that two pair of his black cloth trowsers had been spoiled in a similar manner. I re- niember hearing from a diabetic patient in the Edinburgh Infirmary, that his atten- tion was first drawn to his urine by the number of flies and wasps which its sweet- ness attracted to the chamber-pot. This daily produce of sugar from the laboratory of the human body, is surel}' a very singular and surprising phenomenon. Sugar is not a constituent of healthy urine. i3r. Prout (who is more consulted on this subject than any one else, and whose experience in respect to it is commensurably great) says that he has never known saccharine matter to occur in the urine of any other animal than man. I once had a coach-horse which I supposed might have diabetes. He was a greedy feeder, and drank eagerly, yet he grew thinner and thinner ; and wherever I had occasion to stop, there he invariably began to stale : so that I became thoroughly ashamed of his leaking. Dr. Prout was good enough to examine his urine for me. It contained no sugar, but its healthy properties were much changed : it had less than the natural quantity of hippuric acid, and more of earthy matters. The disease, he tells me, is known at the Veterinary College ; whence specimens of such urine havu been sent to him for inspection : but it is not true diabetes. The unnaturally high specific gravity of diabetic urine is a constant quality; and you must attend to this, for it is almost always a faithful index, not only of the pre sence, but of the severity of the disorder. Dr. Prout places the specific gravity of healthy urine between 1015 and 1025, that of distilled water being represented by 1000. Different authors vary somewhat in their estimate of the natural standard ; but we may be content to follow Dr. Prout. He says that the specific gravity of diabetic urine has been stated to vary from 1020 to 1050: that he has many limes 8x2 870 DIABETES. seen it higher than this, but very seldom so low. In fact it ranges generally between 1030 and 1060 ; and the average may be taken at 1040. So much with reference to the quantity and qualities of the urine discharged in this complaint. It is attended, however, as you may suppose, with other and im- portant symptoms. As so much fluid is evacuated from the body through this channel, it might be ex- pected that the other channels for the excretion of liquid matters would be compara- tively dry: and so they are. The skin is arid, harsh and unperspirable. The patients tell you that they never sweat : that they cannot get into a perspiration. This is a very general symptom ; yet in some few patients, especially as the fatal period of the complaint draws near, the surface readily becomes humid. Again, the bowels are mostly costive, and the feces remarkably solid and free from moisture. The tongue is dry, parched and sticky ; sometimes unnaturally red and clean : and the waste of watery particles from the system seems to be felt and expressed by the inordinate thirst which the patients suffer. Their drought is often insatiable. I re- member one girl telling me that when she was debarred from an excess of water to drink, she would get up if she heard it raining in the night, and catch some of the descending drops to satisfy the tormenting sensation of thirst. And another patient, a very sensible fellow, informed me that, believing it could not be good for him to drink so much, and feeling no confidence in his own resolution to refrain, he was in the habit of betaking himself in the summer time to fields and dry pastures, where no water was at hand to quench his strong desire for it. The appetite for food is often, but not always, equally keen ; and the patients, especially those in the lower ranks of society, are apt to think, while they wonder at their weakness, that there cannot be much the matter with them, since they continue to eat and drink so fa- mously. Again, the enormous daily drain upon the system may be expected to cause various symptoms and sensations which may all be referred to debility "and defective nutrition. Dr. Henry published a table, showing the quantity of solid extract in everj' wine pint of urine of different specific gravities from 1020 to 1050. Taking 1040 as the average specific gravity, and ten pints as the average quantity of the urine discharged daily, the patient would in this manner lose, every twenty-four hours, 15 ounces 7 drachms — or more than a pound and a quarter — of solid ma- terials. We need not be surprised, therefore, at the hunger, the wasting, the hectic fever, the feehng of emptiness and sinking at the stomach, the debility, the chilly state of the bod}', and especially of the extremities, the aching and sense of weariness in the loins and legs, the aversion to exercise, the loss of virility; all of which symptoms are generally present. I may add, to complete the picture, some others, enumerated by Dr. Watt, and confirmed by Dr. Prout, and consistent with my own experience of the disease. They are, uneasiness in the stomach after meals, flatulence and acid eructations, dimness of vision, redness of the whole interior of the mouth, spongi- ness of the gums, looseness of the teeth, and some degree of irritation and inflam- matory redness about the external orifice of the urethra: these last are symptoms noticed in persons dying of inanition. Again, listlessness and depression of spirits, weakness and peevishness of temper : " the once vigorous mind becomes feeble, oblivious, and vacillating — the once amiable temper, fretful, suspicious, and intolerant." With all this there is a peculiar faint and unpleasant odour of the breath and person ; an odour which Dr. Prout says is hay-like, which some call melleous, but which reminds me, as I said before respecting the urine, of the smell of a room in which apples have been kept. I have recognized the complaint, upon first enter- ing the sick-chamber, by this pecuhar scent. Diabetes is generally a chronic disorder, creeping on at first insidiously, and spreading itself, under judicious management, over many years. Yet it is some- times fairly entitled to be called an acute disease ; for it occasionally breaks out sud- denly, is attended with much febrile disturbance, and runs a short course, uncon- trolled by any treatment. One such instance I have seen. Much more frequently Tl proves fatal through the supervention of some organic mischief, such as debility is DIABETES. 871 calculated to foster and develop. It often becomes associated in its progress with pulmonary disease, especially with tubercular phthisis. So common is this, that some persons have thought it universal. But it is not so. I have myself witnessed more than one or two dissections of persons dead of diabetes, whose lungs did not contain a single tubercle. Sometimes the disease terminates in incurable dropsy : and sometimes the patient is cut off suddenly, either by apoplexy, or by some pecu- liar affection of the stomach. There is some kind of connection between diabetes and certain affections of the skin, and of the subjacent reticular membrane. Dr. Prout remarks that it usually follows cutaneous complaints, but accompanies or precedes those which involve the areolar tissue. Persons have been known to lose chronic eruptions upon the super- vention of diabetes. On the other hand, carbuncles and malignant boils are frequently the companions of that disorder. The examination of the dead body throws little or no light upon the pathology of diabetes. We naturally look with interest to the kidneys. But we find nothing there to explain the symptoms noticed during life. What I have usually remarked has been a deep purplish red colour of the kidneys, which were veined and vascular, but not otherwise altered in texture. Andral and others tell us that the kidneys are found hypertrophied in diabetes. But hypertrophy, and unnatural vascularity, are circumstances which we are not surprised at when we reflect upon the vastly increased quantity of vi-ork which the glands have been per- forming. W^e must regard both these unnatural conditions rather as being the con- sequence, than as being the cause, of the morbid flow of urine. In one instance, after sudden symptoms of gastritis, which followed the incautious potation of strong ale, I found the mucous membrane of the stomach distinctly inflamed, in its cardiac portion. I have found also the mesenteric glands diseased, converted almost entirely into bone. But neither of these changes is constant. They were purely accidental in those particular cases. What, then, is the origin and source of this strange complaint ? whereabouts in the body is the sugar formed ? is it made, by the kidneys, from the blood 1 or is it made, from the food, by the stomach ; and carried into the blood to be simply cast out through the urinary channels ? or is it elaborated in some intermediate stage of what Dr. Prout has called the secondary assimilation ; which includes the formative and the destructive processes that take place in the body subsequently to the act of sanguification ? These questions, which are full of interest, have been much de- bated ; and until very lately pathology was unequal to their solution. It was natu- rally thought that, if the sugar pre-existed in the blood, and was only withdrawn from it by the kidneys, it would be discoverable in the blood. Yet able chemists sought for it there in vain. Hence it was inferred, that by some new combination of its elements, saccharine matter was actually formed in the kidneys. The chemistrv and the reasoning were both faulty. Sugar has, now, been detected in diabetic blood. It is detected with some difficulty, partly perhaps because its presence is masked by the albumen of the serum, but partly because its quantity is small ; and its quantity is small because it is continually decanted out of the blood, as fast as it enters, and with it a profusion of water also, through the kidneys. In this respect the sugar and the urea are alike. They are both excretions which the blood is in haste to cast forth. It would seem also as if the sugar necessarily carried with it a large quantity of aqueous fluid from the blood, and was simply diuretic. When the amount of sugar eliminated is diminished, as by certain remedies it may be, the quantity of urine diminishes too. Traces of sugar had, I believe, been found in the blood by some previous in- quirers : but it is to Mr. M'Gregor, of Glasgow, that we are indebted for the full exposition of this interesting fact. His researches, published last year (1837) in the Medical Gazette, have thrown a new and strong light upon the patholog}'- of diabetes. By a peculiar process, he did, I say, that which many preceding chemists had failed to accomplish ; he detected sugar in the serum of the blood of diabetic patients.. The serum had a milky appearance, he says; and I have seen that myself: il^ specific gravity was above the healthy standard. Having coagulated the serum by 872 DIABETES. heat, he carefully dried it ; then cut the dried mass into very small pieces, and boiled then^ in distilled water; and lastly, he evaporated the decoction to a certain point. To the liquid thus concentrated he added a portion of yeast, and the presence of sugar was manifested by the fermentation which ensued, and which lasted for several hours. Yeast, I should tell you, is a most delicate test of sugar, and will readily detect half a grain in two ounces of liquid. Mr. M'Gregor went a step further back. He obtained, by means of an emetic, ihe digested food from the stomachs of two men who had dined two or three hours before. One man was in health ; the other had diabetes. In each case the food had been of the ordinary kind. Applying, after due preparation, the test of yeast, he found that the vomited matters fermented strongly ; especially those from the diabetic patient. Then he varied the experiment. Thinking that the sugar, in these cases, might have been introduced in the vegetable portion of the food, he adopted precautions to exclude that possible source of fallacy. He administered to a healthy man, and to a diabetic man, a vomit and a purge, to clear out the alimentary canal. Next he fed them upon roast beef and water, and nothing else for three days. Then, three or four hours after a meal, the contents of their stomachs were procured by the operation of the sulphate of zinc, as an emetic ; and treated as in the former case. What the healthy man vomited did not ferment at all. What came from the diabetic pa- tient fermented " pretty briskly." The fault, then, we may safely conclude, lies in the digestive organs. Instead of healthy and nutritive chyle, saccharine matter is prepared by the stomach, and enters the circulation. That which should be converted into muscle, and fat, and bone, and nerve, and membrane, is hurried ou^ of the system, as sugar, with the urine. Thus far we see our way with tolerable clearness. But ivhy the stomach should cease to perform its accustomed chemistry upon the food, and even upon sugar itself as an article of food, Ave have not yet learned. That single important step is still wanting to the complete solution of the pathological problem. I may mention that Mr. M'Gregor carried his inquiries further still, and met with some curious results. He examined the saliva ; the feces ; and the sweat. He found sugar in the saliva. He could find none in the sweat. The feces of one pa- tient, allowed to dry spontaneously, became covered, after the lapse of some time, by distinct crystals of sugar. And yeast having been administered to two patients, in ounce doses, after each meal, had soon to be discontinued, because the patients, to use their own expressions, felt as if they "were on the eve of being blown up." We know but little about the causes of diabetes. It is not a very common dis- order; and in those who become afflicted with it, there probably has existed a pie- disposition to it. Dr. Prout remarks that the complaint runs sometimes in families, and is inherited. I had under mj own observation, for some time, three children, two brothers and their sister, all affected with diabetes. The mother, a maternal uncle, and a sister of a friend of mine, all died of this malady. The same author mentions among the predisposing causes, long-continued intemperance, and especially the immoderate use of spirits, severe evacuations, excessive labour joined with a poor acescent diet. Distress and anxiety of mind are held also, and justly I think, to be among the predisposing causes. It occasionally seems to be produced, at once, by the operation of some exciting cause, such as exposure of the body to cold ; or the drinking of large draughts of cold fluid while the person w^as hot and perspiring. Dr. Bardsley states that, in twelve instances of the disease which had fallen under his own notice, the patients attributed their ailment to one or the other of these two causes. Now these are common causes of disease ; and that a predisposition does exist is probable from the fact, that where the exciting cause has acted on several individuals at the same time, one alone has become affected with diabetes. There is u narrative illustrating this, by Sir Henry Marsh, in the third volume of the Dublin HospiUd Reports. A patient of his traced the apparent origin of his diabetes to ex- posure to wet, cold, and privation, at sea, while in imminent danger of shipwreck. Another of the crew fell ill of ague. Others escaped entirely, or had only common colde DIABETES. 8^3 If the account which I have been obliged to give you concerning the intimate nature, and the causes, of this curious malady, should appear unsatisfactory, so also I fear, will what I have still to say respecting its cure. I dare not affirm that diabetes, although it seems a merely functional disorder, has ever been cured. Dr. Prout has known some kw patients, two perhaps, or one, recover. Apparent recoveries — nay, apparent cures — are not very uncommon. And this it is of great importance to know. Remedies are not useless because they fall short of their full scope. It is better to keep a man on the edge of a precipice, if you cannot pluck him away from it, than to let him fall over. And many diabetic patients are kept in this predica- ment of dangerous safety. There are certain remedies that exercise a strong con- trolling influence over some of the most prominent and troublesome of the symptoms; and that sometimes even restore the patient to a state which he mistakes for health ; and which a medical man, unwarned of its fallacious character, might also mistake. The urine may recede within the natural limits. There may remain one morbid circumstance only, and that of a nature easily overlooked : indeed it is sure to escape observation if it be not especially searched after. I allude to the unnaturally high specific gravity of the urine. So long as the density of the urine continues perma- nently and decidedly above the heakhy standard, there is no real security. The smallest disturbing cause — exposure to cold, an intemperate meal, unusual exertion and fatigue, sudden or strong mental emotion — may bring back all the symptoms in their former severity. If these and similar hurtful agencies can be averted, life may sometimes be prolonged, in much comfort, for many years. There are three objects to be kept in view, in the treatment of every case of diabetes. First, to restore the defective power of the digestive apparatus : Secondly, to cut off, or restrict as much as possible, the supply of saccharine mat- ter from without : Thirdly, to mitigate or remove the most distressing symptoms. If we could achieve the first of these objects, the other two would fall out of sight ; for the disease, which is really a variety of dyspepsia, would be cured. But hitherto all the resources of our art have, in this respect, been baffled. Our main hope of uUimate success must lie in the regulation of the ingesta; whereby, also, the second indication is to be fulfilled. Some of the food is, in every case, carried to the proper account, or the patient would speedily die. If we can succeed in directing a sufficient amount of healthy nutriment to the organic tissues of the body, the draining away of any superfluous sugar will be borne well enough. About the beginning of the present century, Dr. Rollo discovered and taught that a diet composed exclusively of animal matters had a signal effect in reducing the quantity and in diminishing the sweetness of diabetic urine. Mr. M'Gregor's experi- ments tell us why this is. Animal food furnishes but scantily the materials for the formation of sugar. "The saccharine alimentary principles are chiefly derived (says Dr. Prout) from the vegetable kingdom, and indeed constitute what may be called, by way of distinction, vegetable aliments.''^ If, then, we can exclude aliments of this kind, and confine the patient to animal food alone, we thus cut off" the supply of the materies morbi ; and without indeed curing the disorder, suspend its worst effects. But unluckily very few persons can long endure this mode of living. So far as ihey can endure it, they are comparatively safe. We are obliged to relax, in some degree, the rigour of our rule; and it is curious to observe how suddenly and decidedly the saccharine properties and the quantity of the urine are augmented, when, by stealth, or by permission, the patient adds to his meal the smallest portion of vegetable food — even a biscuit or two. We must therefore contrive to vary the animal diet as well as we can ; encourag- ing the patient by a free license to choose among the diffi?rent kinds of meat, game, poultry, and eggs, in their diversified modes of preparation, and admitting into his oill of fare as small an admixture as possible of vegetable substances. Green gar- den-stuff, the oleracea, spinach, cabbage, celery, and the like, maybe taken with less risk of increasing the saccharine matters in the system, than potatoes, and those other articles of vegetable diet which contain a notable proportion of sugar, gum, or starch S74 DIABETES. All kinds of fruit must be forbidden. You vill seldom be able to debar )'our patients entirely from bread : none should be allowed but such as is well fermented, and somewhat stale, or thoroughly toasted ; and even that as sparingly as may be. It is also of much importance to admonish the patient, whose appetite is generally ravenous, against eating too large a quantity, even of animal food, at any one tune. Not only is the digestion still further weakened and oppressed by an intemperate meal, but the patient's life may be put in peril by every such act of unwise indul- gence. Of this I have witnessed one example, and have heard of several more. The quantity of drink should likewise be limited. It may properly enough con- sist of animal broths : and these should be taken tepid,, for they are then more likely to be taken in moderation. The patients must, however, and will, have something else, to slake their urgent thirst. I have found (acting upon a suggestion of the elder Dr. Latham) that distilled water, acidulated with phosphoric acid, appeases, more than most things, that painful sensation. The water of the Bristol Hot Well, which contains carbonate of lime in solution, is praised by Dr. Prout for the same purpose. Dr. Christison gives an important caution in respect to drinks ; viz., that, when the thirst has already been much indulged, the quantity of liquid taken must not be greatly reduced all at once. Sudden failure of the vital powers has not unfrequently ensued upon abrupt changes of that kind. Very numerous are the remedies which have been tried, and which have been recommended, for this disorder. I shall notice those only of which I have had per- sonal, and in some degree favourable experience. The first of these is blood-letting, which has been strongly advocated by Dr. Watt, of Glasgow, and by Dr. Satterley, formerly one of the physicians to the Middlesex Hospital. It is not a remedy which would naturally occur to one's mini as being likely to prove of service in such cases ; but both the authors I have mentioned speak of it in terms of high commendation. They affirm that, under small and frequent bleedings, the strength increases ; the clamminess of the mouth, and dry- ness of the skin, diminish ; and the blood by degrees assumes the buffy coat. I have once seen the method of frequent blood-letting fairly put to the test. At first, the patient did seem to be benefited by it ; but she ultimately died : and I am satisfied that her death was accelerated by one bleeding too many, or by too large an abstrac- tion of blood at one time. This measure has the best chance of being useful, when the malady is recent, and attended with febrile disturbance. In chronic cases, in old persons, and whenever the debility is already great, venesection can seldom be requisite or proper ; although even then, as Dr. Prout remarks, it may be borne better than one might expect. Local bleeding is, however, of much service in relieving local uneasiness. Leeches may be applied to the epigastrium, if the patient has tenderness there, or complams of a sense of fullness or of burning in the stomach. Cupping to the loins, if they greatly ache. Opium is a treasure to us in this disorder. It quiets the nervous irritabihty of the patient, allays many of his most distressing sensations, and restrains in a remarkable manner the morbid profluvium from the kidneys. But you must not suppose, from observing these favourable changes, that you are curing the disease by it. It appears to control the diuretic influence of the sugar in the blood ; but it does not banish the sugar itself. And, as far as my experience goes. Dr. Prout is in the right when he stales that moderate doses of opium generally suffice to check the excessive dis- charge. Five grains of Dover's powder, for example, three times a day, will do as much good, and on the other hand be productive of far less inconvenience than larger quantities of that narcotic substance. The sudorific properties of this compound are thought to render it ehgible ; although it has seldom any apparent efTect, in that way, in diabetes. If the ipecacuanha which it contains should disagree with the stomach, an equivalent quantity of any other preparation of opium may be substituted for it. There is another remedial measure which has also, in some cases at least, a loosi beneficial influence on the condition of the patient ; I mean forced perspiration^ DIABETES. 875 perspiration induced by the hot-air bath. Of this I have seen some striking- exam- ples. A very well-marked case of diabetes came under my care in the JMiddlesex Hospital several years ago. A vapour, or hot-air bath, had just then been constructed in the hospital, and I thought it a good opportunity for trying whether the suo pended functions of the skin might not be restored, and the extravagant action of the kidneys perhaps corrected, by that powerful mode of exciting perspiration. I should tell you that other plans of treatment had already been put in force, with but partial advantage. It would occupy more time than I can now spare to enter upon the details of this case ; but I will read to you the man's own statement, which he wrote down before he left the hospital, in evidence of the benefit he derived from the sudatorium. "The urine" (these are his words) "is reduced more than one-half, and does rot contain much sweetness, but sometimes tastes salt, with a mixture of bitter. iViy stools, which were dry, and like balls packed together, are now quite natural. The pains in my limbs are entirely removed. My spirits, which were very much de- P'essed, are now revived, and cheerful. The unpleasant aching of my kidneys, of Afhich I spoke little lest 1 should be cupped in the loins, is now removed ; only I feel weak there. I am cured of the pain m my stomach, and the circuitous working of the wind in my bowels, which formed lumps in my belly as it passed, resembling those formed by the cramp. I have likewise got rid of the palpitation at my breast, which was accompanied with a sort of dread. My breathing is much improved ; perspiration, in a great measure, restored ; and my skin, which was dry, is now be- come moist. I sleep well at night, whereas I could not sleep more than two or three hours out of the twenty-four. My thirst, which was excessive, has ceased to be troublesome." This man, who, m the statement I haVe just read, has so graphically described his own morbid sensations, and the relief from them which he had obtained, left the hospital thinking himself well : but, the specific gravity of his urine remained above 1030. In about half a year afterwards, he went one evening to Hyde Park to see some fire works, got wet feet, and began to cough. The diabetic symptoms returned more severely than ever ; and he soon died. I found his lungs stuffed with tubercles. In furtherance of the principle upon which the use of the hot bath is recom- mended, the other well-known methods of promoting the natural functions of the skin should be followed; friction, and more especially warm clothing. Steel is sometimes singularly beneficial in repairing the strength, and enlivening the spirits ; as indeed it is well known to be in other forms of disease attended with a copious and permanent drain upon the system, and with a diminution of red blood. Of course it may be combined with opium, or with any other medicine which the circumstances of the patient may render needful. I scarcely need say that the bowels require attention. Not that active purgation is advisable, but simply their regulation. Castor oil, rhubarb, aloes, lenitive electuary, are more appropriate in these cases than the purgative salts, w4iich are apt to be diuretic also. There is one other drug from which I think I have seen the happiest effects. i mean the creasoie. I first became acquainted with its virtue, from prescribing it, almost accidentally, until a consultation could be arranged with Dr. Prout, for a child, eight years old, in whom the disease was well-marked, and who had been brought to London f^om the country for advice. She had been rapidly wasting away for ten weeks, was extremely feeble, soon tired, very thirsty, especially at night, and had (what was also new to her) an enormous appetite. She was passing from three pints to two quarts daily of pale urine, having a specific gravity greater than 1040. I desired that her diet should be as exclusively animal as she could bear, and that she should take one minim of creasote, suspended by means of mucilage in an ounce and a half of water, three times a day. Curiously enough, the child liked the tarry flavour of the medicine. Upon this plan, with gentle aperients occasionally to regu- late her bowels, she remained for upwards of a twelvemonth. Her urine soon fell in Quantity within the limits of health, and in density to about 1030. She regained her 876 CHRONIC DIlrKii.dx'3. lost flesh, strength, complexion, and spirits, aad p^rew '"^ns'deraOly. At length she suddenly sank under an obscure affection 0/ the chest. a brotner of this iittle girl has lately manifested unequivocal signs ol the same complaint ; and in him it appears to have been equally checked by the saiae method of treatment. I have detected sugar in the urine of another boy belonging to the same family. There were two points in this young lady's case which deserve a passing remark. As her urine diminished in quantity it began to deposit the lithates. This Dr. Prout considered a very promising earnest of a return to a better diathesis : and I find that in cases which have crept on insidiously from the first, he is accustomed to date the malady from the time when lateriiious sediments, previously common, disappeared from the water. The other point was, that calomel always sickened this child, and aggravated all the diabetic symptoms. This is consistent with Dr. Front's experience, who tells us that he has never seen mercury do good in diabetic disease ; but on the contrary almost invariably do mischief. I would advise you to read his judicious observations upon the too common abuse of that mineral. I am quite aware of a possible fallacy in the case I have been mentioning, with respect to the efficacy of the creasote. With the use of that drug was associated a stricter adherence to a purely animal diet ; and it is impossible to estimate with pre- cision the separate effects of these two remedial measures. I am, however, disposed to believe that the creasote, by its well-known preservative property, checks the con- version of the food into sugar. And I think it is a mistake to go on increasing the dose. To most stomachs it proves irritating and hurtful when pushed beyond a cer- tain small amount. Dr. Maclntyre tells me that he has found the creasote very useful in diabetes. I must, however, acknowledge that, in common with others, I have sometimes been totally disappointed by it. For many years of my professional life I had not met with an instance of what has been called diabetes insipidus : from which I infer the rarity of that disorder. I shall use the term chronic diuresis to express this affection. Very recently a marked instance of such chronic diuresis has presented itself in the hospital. A boy, eleven years old, not unhealthy looking, but lean, was admitted there under my care. He was much troubled by thirst ; and by frequent micturition, which, even in the night, disturbed him many times. His bowels were costive, he had a capricious appetite, and his skin was dry. He voided during the twentj'-four hours several pints, seldom less than nine or ten, of simply dilute urine, of a faintly yellowish hue, and having the specific gravity of 1002. Sometimes, indeed, it was found to be scarcely heavier than distilled water. In other respects he appeared tolerably well. It was supposed that he had been affected in this way for about twelve months ; his desire for drink having been the first symptom noticed. During his residence, of many weeks, in the hospital, under my observation, I made trial of every plan and drug that I could think of, for repressing the unnatural flux of urine. Nothing did him any good : some things, I fear, by disturbing his stomach and bowels, did him some temporary harm. He went out much as he camt m. Although I can tell you neither upon what this disorder depends, nor how it may be remedied, I mention the case because it afforded me a proof that liquid may be absorbed into the body from the atmosphere ; either by the external skin, or by the pulmonarj' mucous membrane, or by both these surfaces. Dr. Prout, to whom I showed both the urine and the patient, advised that, for a time, his supply of drink should be limited. Accordingly, very much to the poor boy's sorrow, he was put upon a daily allowance of a pint and a half. 1 have no doubt that my injunctions were strictly observed, both by himself and by the nurses. Nevertheless, without losing flesh or weight, he passed, during the corresponding twenty-four hours, ten pints and a half of urine. T got evidence of the same fact in another way also ; namely, by weighmg the ALBUMINOUS URINE. 877 boy at short intervals : although the experiment was not repeated so often as I wished it had been. I give you the results of one of these trials. Immediately after he had emptied his bladder he was found to weigh 3 st. 8 lb. oz. 3 dr. Three hours subsequently, having taken nothing in the interim, he weighed 3 st. 9 lb. oz. 2 dr. Then he voided 16 oz. of urine : after which his weight was again 3 st. 8 lb. oz. 3 dr. So that he must have imbibed about a pound of liquid in that brief space of time.* In this instance there was merely an excess in the aqueous ingredient of the urine ; the solid matters were apparently there, in their due proportion to each other, but in a very small ratio to the water. But the aqueous ingredient may be in excess, while the absolute quantity of urea is deficient. On the other hand, with an excess of the watery material, there may be an excess also in the quantity of urea it contains. Dr. Willis has distinguished these three varieties of chronic diuresis by the terms hydruria, anazoturia, and azoturia, respectively. Although I am no friend to the multiplication of technical names, I must tell you that the distinctions expressed by these terms are real, and of some importance. Anazoturia we shall find to be often symptomatic of a peculiar organic disease of the kidney, which I hope to describe in the next lecture. Azoturia, which is accompanied by an unnaturally high specific gravity of the urine, is apt, on that account chiefly, to be mistaken for diabetes. As recoveries from it are not uncommon, it may be suspected that some of the boasted cures of diabetes were cures of this less serious disorder. In the one case, the yeast test detects the presence of sugar in the superabundant urine ; in the other case it finds none. LECTURE LXXVIII. Albuminous Urine. Means of detecting the Albumen. What it imports. Anato- mical characters of Bright s Kidney. Symptoms to which this renal disease gives rise. Nature of the affection. Another morbid condition of the urine, imperatively demanding your attention, is that in which it is habitually impregnated with albumen. This albuminous con- dition is much more common, and in general not less serious, than the saccharine condition which I described yesterday. There is no albumen in healthy urine. Neither can we recognize its presence, in any urine, by mere inspection. We detect it by certain tests : and I will tell you, in the first place, what these are ; and how to use them. Albumen — of which we have so familiar an example in the "white" of eggs- begins to pass from the fluid to the solid state at the temperature of 160° Fahrenheit. When diluted it may require for its complete coagulation the heat of 212°. Hence one simple and easy test of its presence. We discover that albumen is contained in the urine, by heating that fluid to the boiling point. This is most conveniently done in a small glass tube, by the flame of a spirit lamp. It is seldom that any pre- paration of the suspected urine is requisite. It may, perhaps, be hazy in conse- quence of its containing mucus ; and if its transparency be much troubled, it will be well to filter the fluid before testing it. When, as sometimes happens, albuminous urine is already turbid from the presence of the lithates, these dissolve as the heat * This boy lived more than two years afterwards, and continued to yield an excessive quantity of pale, neutral urine, scarcely heavier than distilled water. After death, scrofu- lous tubercles were found in his brain and in his lungs. His kidneys were gorged with venous blood, but of healthy structure. There was nothing wrong, apparently, in his organ» of digestion. 3y 878 bright's kidney. IS applied, and the urine first beconties clear ; and then, as the temperature rises, the albuminous opacity begins to be visible. The phenomena observable in the heated urine vary in different cases, chiefly by reason of the variable amount of albumen. The whole is sometimes converted into one gelatinous mass: but this is uncommon. Usually the albumen first appears in the form of a whitish cloud, of which the constituent particles muhiply, and collect, in proportion as the quantity is considerable, into small curdy fragments or flakes. These soon subside to the lower part of the tube, leaving the supernatant liquid clear. The amount of albumen is of course to be estimated by the portion of the tube that it occupies. Now this test, by heat, is not conclusive, nor sufficient. There are circumstances that may impede or prevent its effect in coagulating albumen, which, nevertheless, is present. On the other hand it may, under other circumstances, produce a falla- cious appearance of albumen where none exists. Albuminous urine has often a less acid reaction with litmus paper than healthy urine. The reason of this I will explain presently. When recently discharged from the bladder, the urine may be neutral or even alkaline ; or it may become neutral or alkaline, by spontaneous decomposition after it has left the bladder. In any case, the urine, thus alkaline or neutral, will not coagulate when heated, even thougn it may be full of albumen. Again, although there may be no albumen, heat may cause a flaky precipitate, consisting of the earthy phosphates. We avoid, or remedy, these sources of fallacy, by testing the suspected urine with nitric acid also, which has the property of precipitating the albumen in a flaky or pulpy form. It will thus detect albumen when the tested urine is alkahne ; and by restoring its acidity, it Avould make the albumen discoverable by the test of heat. It has likewise the effect of redissolving the spurious precipitates which may be thrown down by the application of heat, and consequently of showing that they are spurious. Nitric acid alone, however, is not, any more than heat alone, an unequivocal touchstone of the presence or absence of albumen ; for it may occasion a flaky precipitate of lilhic acid, when there is no albumen. But this defect is compen- sated by the complementary criterion of heat ; the precipitate being redissolved by raising the temperature of the urine, while any coagulated albumen remains insoluble. Dr. Christison states that, in his experience, "sometimes nitric acid added in excess did not separate albumen which had been present in large quantity" — a fact which he thinks " is probably to be ascribed to the albumen itself having undergone more or less decay, along with the other principles of the urine." Hence the urine should, if possible, be examined before it has become decomposed by lapst of time. If, however, you employ both these tests with different portions of the same urine at the same time, and with the same portion in succession, you will avoid all risk of mistake. Other tests there are, frequently spoken of, and sometimes recommended ; particu- larly the ferrocyanate of potass, corrosive sublimate, creasote, and oxalic acid. They are unnecessary, in addition to heat and nitric acid ; and they are liable to fallacies from which these last, when combined, are free. Unless you are expert chemists, you had better avoid them. Now it is quite certain that the presence of albumen in the urine does often accom- pany and bespeak a very serious organic disease of the kidney. For this disease we have no appropriate name. I wish we had. Some call it granular degeneration of the kidney, but the epithet granular is not always applicable. It is most fami- liarly known, both here and abroad, as Bright'' s kidney or Bright'' s disease ; after the eminent physician who, in 1837, first described it, and showed its great patholo- gical importance. These are odd-sounding and awkward terms ; but in the lark of better I must employ them. It is very difficult to describe, in words, the anatomical characters proper to this renaJ disease ; for they are neither very definite nor very constant. The description bright's kidney. 879 that I am about to attempt will be made more intelligible by Dr. Bright's plates and those of M. Rayer, which are both before you. The morbid appearances presented by the substance of the kidney are such as denote some change in its intimate structure. Its cortical (or secreting) portion is the primary and chief seat of this degeneration ; yet what is called its medullary (^'. e., its excreting) part, is also sometimes implicated, but in a less degree. These morbid appearances relate to the size, figure, and consistence of the kidney ; to the colour and condition of its surface, and of its interior. With respect to some of these points there is much variety in different cases ; and studying this variety under the light which is thrown upon it by the clinical history of the disease, we have reason to believe that it is connected with different stages of the disorganizing process. Thus if we look to the size of the diseased organs, they are sometimes much larger than natural, sometimes of the ordinary magnitude, sometimes consider- ably smaller. The average weight of the adult human kidney is four ounces. M. Rayer has met with some, in this disease, weighing twelve ounces. Both the incre- ment and the decrement of the natural bulk belong principally, if not altogether, to the outer secreting portion of the gland. If a longitudinal section of the exaggerated kidney be made, its cortical part is seen to be unduly broad ; and the same part is disproportion ally narrow when the whole organ is smaller than common. For this reason, in the latter case, the radiating medullary portions approach nearer to the surface than they are observed to do in a healthy kidney. And it furthermore appears that the enlargement is most commonly coincident with the earher, and the contraction or shrinking with the later stages of the renal disease. The consistence of the diseased gland is variable also. Sometimes, and for the most part in the earlier periods, it is soft and flabby : sometimes, and especially m the later periods, it is remarkably compact and hard. The size and the consistence of the kidney are, in most cases, inversely proportional to each other. Again, lhefor7n of the kidney, in the disease in question, often undergoes some modification. As the special change proceeds, the exterior of the gland shows a tendency to become indented by linear depressions, and to present a lobular shape. This, however, is by no means a constant phenomenon, even in the most advanced stage of the malady. When its proper investing tunic is stripped off — and less distinctly through the same tunic, before its separation — the surface of the kidney appears mottled, mar- bled, or stained ; of a yellowish-gray colour in one place, and of a dark or purple tint in another. Occasionally it is pale throughout its whole extent ; more commonly of divers hues, and variegated with httle streaks, which are portions of vessels con- taining red blood. Sometimes the surface is curiously speckled ; often uneven as if strewed with prominent grains ; in some instances quite rough and scabrous. These several unnatural appearances are usually the more conspicuous, in proportion as the complaint is the more advanced. The most uniform, however, and the most characteristic of the morbid appear- ances, are those presented by the cut surface of the kidney, when it has been divided into two symmetrical portions by a longitudinal incision. We then perceive that the cortical substance is the main seat of the morbid alteration. It has lost in a greater or less degree, its proper red colour and uniform aspect. Sometimes it puts on a speckled or granular appearance ; but this, in my experience, is less common than a pale, nearly homogeneous surface, somewhat like the section of a parsnip. Its na- tural strife are confused or obliterated. The incised surface gives one the notion of some deposit, whereby the original texture of the part is obscured. The blood- vessels seem, many or most of them, to have been emptied by compression, or to be blocked up by yellowish solid matters ; while the healthier pyramidal masses belong- ing to the medullary portion of the kidney are displaced, and pushed aside, or encroached upon by the same yellowish matter, which sometimes interposes itself between, and opens out, their radiating tubuli. Together with these changes ol appearance and structure, I have several times found the veins that emerge from the kidney firmly plugged up by coagula of blood. In some rare cases the kidney is studded, both on its surface and throughout iu 880 SYMPTOMS. interior, with numerous small cysts or cells, contaming a thin transparent liquid. These cysts have been inaccurately termed hydatids. It is not at all uncommon to meet with one or two such cysts in this diseased state of the organ. It has been made a question whether the various appearances which I have been attempting to describe, and which sensibly differ in degree and combination in dif- ferent cases, are characteristic of different morbid conditions, or merely of different stages and varieties of the same essential change. Our knowledge of the subject is scarcely sufficient to supply a positive solution of this question. Excepting perhaps the cyst, my own opinio?! is, that they are all accidental forms and effects of one and the same morbid process. At the same time I ought to tell you, that both Dr. Bright and Dr. Christison appear to incline to the opposite conclusion. There is still another state of the kidney, very different to the eye from any that I have yet mentioned, but which has been thought, and which I think, to be, in some cases at least, the first stage of all in the disorganizing process. This state, which I referred to when speaking of suppression of urine, may be briefly described in two words — sanguine congestion. The whole organ is gorged with blood, which sometimes drips freely from it when it is cut open. The kidney is in general large, somewhat flabby, of a deep dark red, even of a chocolate or purplish colour, nearly uniformly diffused, except that the cut surface is usually diversified by still darker tuft-like spots, which have been ascertained to be the Malpighian bodies filled with blood. This change from the natural appearance of the kidney is evidently of a recent kind ; and the symptoms that have been observed to belong to it are these :^ Fever preceded often by rigors ; uneasiness or dull pain in the loins; nausea and vomiting ; a very scanty secretion of urine, which is sometimes tinged with blood, and always albuminous ; occasionally complete suppression of urine. To these symptoms there is presently added, in most cases, sudden and general anasarca — what is commonly called inflammatory, active, or febrile dropsy. If the secretion of urine be entirely suspended, death soon ensues by coma, as I explained to you yesterday ; but if not, the disorder is frequently fatal by the supervention of some acute internal inflammation ; pleurisy, or pericarditis, or pneumonia, or peritonitis. Many persons recover completely from the condition expressed by this combination of pneumonia. Many seem to recover, but bear about with them the germs or beginnings of those more chronic and latent changes which constitute " Bright's kidney." And what are the signs which indicate, to an instructed eye, the presence of those changes ? Some of them are precisely the same, in kind, as those which denote the acuter disorder ; only mitigated in degree, and of slower march and succession. The patients are subject to obscure lumbar pains : to sickness from time to time, and retching; and their urine is apt to be red, brown, or dingy, as well as albumin- ous, from the intermixture of some of the colouring matter of the blood. They are obnoxious to inflammations of the serous membranes also; and more particularly to head affections, of which they often die ; drowsiness, convulsions, apoplexy. And, to finish the resemblance, many of them, ay, most of them, become at length anasarcous. Besides these symptoms there are others which are not seen in the acute malady ; because it is acute. Gradually increasing pallor is almost constant ; disease of the heart is common ; and the skin, in general, even in the absence of fever, is remarkably dry and unperspiring. The patients are troubled by a frequent want to make water ; by flatulence of the stomach and intestines ; and by caprice of the bowels, which are sometimes obstinately costive, sometimes prone to diar- rhoea. Now it is worth your while to remark, with respect to this category of symptoms, that (the state of the urine excepted) they have no special prima facie reference to renal disease. They are all common enough in various other complaints. In truth they are mere secondary consequences of Bright's disease ; and in so far as they are symptoms of it, they are indirect symptoms. Before Dr. Bright, no one perceived, in such symptoms, any indication of disease of the kidney. The primary and fun- damental organic malady reveals itself by no direct symptoms, excepting those which are furnished by the urine. STAGES OF THE DISEASE. 881 Seeing, then, that this pecuhar disease ot the kidney is coupled with effects so grave and perilous, and seeing that one of its most positive and distinctive marks is in albuminous state of the urine, two questions of great interest at once present themselves. 1. Does albuminous urine always imply the presence of Bright's disease ? a,. Is Bright's disease, when present, always accompanied by albuminous urine! To both these questions the answer is — no. It is certain that some articles of food have the effect, in some persons, of render- ing tne urine for a time albuminous : perhaps it would be more correct to say that certain forms of indigestion cause this change. Albumen has also been detected in the urine under that general state of irritation produced occasionally by mercury, or by a bUster to the skin. In the crisis of some febrile disorders, and in some cases of pregnancy, the same phenomenon has been observed. Whenever blood, pro- ceeding from any part of the long tract of mucous membrane which lines the urinary organs, mingles with the urine, that fluid of necessity contains albumen, and coagu- lates if tested by heat or by nitric acid. On the other hand, when the kidney is really affected in the way already described, the admixture of albumen with the urine is apt to disappear, for a while, even sud- denly. I have known it vanish for several hours, immediately after the effectual application of a hot-air bath ; and after profuse purging by a full dose of elaterium. Sometimes it is absent for a longer period. Another important question, therefore, now arises. Finding albumen in the urine, how are we to know whether it does, or does not, indicate the presence of Bright's kidney 1 We may judge, in part, by frequently testing the urine, and noticing whether the albuminous impregnation be transitory or persistent. In part also we judge by the absolute amount of the albumen in a given measure of urine. If the water be deeply charged with that unnatural ingredient, the presumption is strong that the kidney disease is in progress ; and when that disease is confirmed, another remarkable change is found to have taken place in the urine. Its specific gravity is very low ; and strikingly in contrast with that of diabetic urine. This is therefore a very strong additional diagnostic circumstance. On Dr. Prout's authority we have assumed the specific gravity of healthy urine to range between 1015 and 1025. Other writers make it higher. But the urine voided in Bright's disease is sometimes as low as 1004 ; and its mean specific gravity does not exceed 1013. I need scarcely again remind you, that the question of specific gravity must always be viewed in relation to the absolute quantity of urine secreted. The specific gravity depends, of course, upon the proportion of the solid constituents of the urine contained in a given quantity. If the aqueous portion be augmented, the effect upon the abso- lute density will be the same as if the solid contents were proportionally diminished. But when, as frequently happens in certain stages of this renal disease, the specific gravity decreases while the quantity of the urine decreases also, that conjunction of phenomena becomes especially significant. The density of the urine being thus unnaturally low, notwithstanding the addition of the new substance albumen, it follows, as a matter of inference, that the solid con- stituents proper to healthy urine must be sensibly diminished : and they are found, in fact, to be so. These solid ingredients consist mainly of urea, and of certain salts. The aggregate solid contents amount, in health, to sixty-seven or sixty-eight parts in every 1000. In Bright's disease the amount has been ascertained to be diminished to twelve or fourteen parts, and even, in an extreme case, to less than this — to about six parts. The urine contains, then, albumen : and it is deficient in urea. These two facts suggested-, naturally enough, to M. Solon, and to others, the notion that ^he albumen might be formed, by a sort of conversion, at the expense of the urea; since these substances, by a slight alteration in the ratio of their elements, pass respectively each into the other. But it is not so. Dr. Christison had observed many years ago, thai when the urine was deprived of the greater part of its urea, the quantity of al^'uraen '>( 3 V 3 S82 bright's kidney. contained in it was small ; and, on the other hand, in cases where the urea was con- siderable in quantit}', the albumen was plentiful also. In a recent work on this subject, the same physician states that the whole of his subsequent experience has been in conformity with this observation. It being certain, therefore, that the albumen is not vicarious of the urea, what (you may ask) becomes of the urea ? It is detained in the blood ; and may readily 1)6 recognized there in considerable quantity : and herein lies, as I conceive, the secret of the secondary affections which belong to this disorder, and of its great fatality. The body is poisoned in detail by the retention of its own excrements. The blood not being dul}"^ purified through that great emunctory, the kidneys, is spoiled for its purpose of nutrition. Besides containing urea, it undergoes other and more mani- fest changes. Its proportion of fibrin varies; and it gradually becomes poor in colouring matter ; the serum is less albuminous also, and of a lower specific gravity, than in health. The quantity of albumen in heahhy blood averages from sixty-five to sixty-nine parts in 1000. In this malady Dr. Babington has found it reduced to sixteen parts. The average specific gravity of healthy serum is 1030 ; but in Bright's disease it descends to 1024, 1020, and even to 1013. Now Dr. Christison has made out the very interesting fact, that there is a definite inverse ratio between the coagulabihty of the urine, and the density of the serum. The more albumen there is in the former of these fluids, the less is there in the latter, and the lower is its specific gravity. So that the deficiencies of the one fluid balance the super- fluities of the other. All this is ver}^ diflt'rent from what takes place in diabetes, in which sugar is excreted with urine that is otherwise health}^ : whereas, in Bright's disease, urea, which ought to be discharged, remains in the blood ; and albumen, which ought not to be separated, is taken from the blood and carried out with the urine. I have now described the changes presented by the kidneys in this disorder, the symptoms which attend it, and the morbid conditions both of the urine and of the blood. But these all vary and fluctuate at different periods of the complaint. I must next, therefore, endeavour to state what has been ascertained of its course and progress. When the chronic disorder is not a legacy left by the more severe and acute form of disease which I have termed febrile dropsy, it is apt to creep on very insidiously, and to escape our notice : and its history is not yet fully known. It will be enough if I distinguish two stages of the malady — the earl}^ and the advanced. In the early stage the urine is generally scanty. Instead of about 40 ounces in the twenty-four hours, the patient voids 16, 12, 8, or even so little as 2 or 3 ounces. Sometimes the secretion is nearly or quite suppressed : and then the head seldom fails to become affected in the way already described. The urine has also an un- natural appearance. It is red, or dark, obscurely turbid, like muddy beer. It froths more than usual: and if you blow into it through a tube, }^ou raise bubbles similar to those which may be formed in soapy water. Its specific gravity is somewhat, yet not greatly, reduced ; about 1021, perhaps ; it is seldom at this period so low as 1016. It contains an abundance of albumen. At the same early period, blood drawn from the arm exhibits the bufl'y coat. The serunr. is much diminished in density, and contains a considerable quantity of urea. There is no decrease in the fibrin ; perhaps it is a little augmented : and there is no great change in the amount of colouring matter. In the more advanced stages of the disease, the quantity of urine is frequently not below the standard of health ; and it sometimes considerably exceeds that standard, so as to constitute one variety of chronic diuresis (anazotitria)., which some call diabetes insipidus. It is usually pale, slightly opaque, and of a very low specific gravity; 1014, 1010, 1007. Once, when the quantity of the urine was 7iot in excess. Dr. Christison found the specific gravity to be no more than 1004. There is a corresponding reduction in the natural solid ingredients of the urine. Albumen, too, is present, but more uncertainly than in the earlier periods : fluctuations in this respect are more common than before. It is a mistake to suppose that the amount of album2n increases as the disorder advances. The contrary rule would be more SECONDARY AFFECTIONS. 8^ near the truth. Tn general the albumen is plentiful and almost constant in the outset of the malady ; less surely present as it proceeds ; and sometimes entirely absent in its latter periods ; and it is of importance to remark that the alteration in tlie specific gravity follows the opposite law. The declension of density, so far from being corrected, augments with the progress of the disorder. Hence the one of these morbid phenomena is a valuable check upon the other, considered as an index of what is going on in the kidney. And another fact, which it is essential for you to know and to remember, is, that, in any stage of the disease, the supervention of febrile disturbance, from local inflam- nnation or whatever other cause, tends to renew, for the time, those qualities of the urine which belong, to the early period. Meanwhile, the disease advancing, the serum of the blood recovers more or less Its lost specific gravity, in proportion to the decrease of albumen in the urine. The quantity of fibrin seems, in some cases, to diminish. But the striking and most cha- racteristic change is the rapid disappearance of 'the colouring matter, the hematosin, as it is called. This may at length be so much reduced, as to form less than a third of the healthy average. If venesection be occasionally employed, this process of depravation is accelerated; but it takes place whether blood be artificially withdrawn from the system or not. " I am acquainted," says Dr. Christison, " with no natural disease, at least of a chronic nature, which so closely approaches hemorrhage in its power of impoverishing the red particles of the blood. Hence the peculiar pallid or dingy hue of the patient's skin ; the leucophlegmatic and even waxy aspect which invariably stamps the victims of this complaint. These characters, then, of the urine and of the blood, when rightly compared and interpreted, reveal not only the existence of the renal disease, but also, with much probability, the stage or degree that it has reached. Let us next review, a little more in detail, those secondary affections which I have already pointed out as being incidental to the subjects of this renal malady. They are of much consequence : for in the course of the disease, more or fewer of them are almost sure to occur ; most of them are productive of very serious distress ; and some of them place the patient's life in immediate jeopardy, and often bring it to a premature end. Moreover, it is by these secondary affections that our suspicion of the primary disease upon which they depend is, in general, first awakened : and it is to the prevention or the removal of these same secondary affections that our cura- tive endeavours must chiefly be directed. The most common, and practically the most important, of them all, is &>nasarca ; but of this, although I mention it first, I shall postpone, for a while, the further consi- deration. Another very common, and very important secondary complication, is the occur- rence of what we compendiously call head-symptoms : various manifestations of derangement in the cerebral functions; headache, drowsiness, delirium, epileptic seizures, apoplexy. So frequently indeed is the death of the patient preceded by coma, with or without convulsions, that Dr. Christison considers this to be the "natu- ral termination " of the disease, or " the mode in which it proves fatal when life is not cut short by some other incidental or secondary affection." Of seventy fatal cases observed by Dr. Bright, death was ushered in by well-marked cerebral symp- toms in thirty. I have already told you the circumstances under which these affections of the brain usually arise. They almost always follow any great diminution, or the entire sus- pension, of the secretion of urine. But this rule is not so strict is to admit of no exception. Occasionally, but I believe very seldom, the urine, in this disorder, is reduced to a very small amount, while the head remains undisturbed. Of this Dr Christison has recorded a remarkable instance. One of his patients voided no more than two ounces of light urine daily, for nine days before his death ; yet he continued sensible to the very last minute of his existence, and died simply of inanition. Some- times apoplectic symptoms occur, and carry the patient off, although there has been no extreme or material reduction in the quantity of urine. Now when death has thus taken place in the way of coma, and the case had been 884 bright's kidney. complicated with anasarca, and serous liquid is found accumulated in unnatural measure in the cerebral ventricles, and in the tissue of the pia mater, it seems rea- sonable to ascribe the coma to the presence and the pressure of that liquid. The dropsy has extended to the brain. And this view of the matter is strengthened by the connection which may sometimes be noticed between the accession of coma and the visible increase of the dropsy in other parts of the bod3\ My own experience accords entirely with that of Dr. Christison as expressed in the following statement. "If the dropsical fluid be allowed greatly to accumulate, drowsiness, the first symp- tom of the affection of the head, very soon makes its appearance in the generahty of cases, and it will speedily pass to fatal coma if not controlled, but the removal of the dropsy will usually remove the drowsiness." To many cases, however, this explanation will not apply, there being no morbid collection of water within the skull, nor any other appreciable change there ; nor, perhaps, any dropsy elsewhere. In such cases we refer the ultimate symptoms, the stupor and the death, to the poisonous influence of the urea in the unpurified blood upon the organs of animal life. Yet this explanation also has its difficulties. Urea must often circulate with the blood without affecting the brain. Dr. Christison states tliat he has repeatedly known the daily discharge of the solids of the urine to be reduced, for weeks together, to one-fourth of the natural amount, while, moreover, analysis of the blood showed that it was loaded with urea, without the appearance of any head-symptom. Dr. Bright also relates a case to the same purpose. A per- son labouring under this disease of the kidney lived for four or five years under his occasional observation. The blooil was analyzed in the earlier stage, and found to contain a large quantity of urea ; as much as the urine itself contained. Yet this patient had no Jits till towards the close of his life. I have sometimes fancied that the pale and watery condition to which the blood is at last reduced, may have something to do with the stupor and coma. I showed you, some time ago, when speaking of spurious hydrocephalus, that similar symptoms are apt to ensue, in conjunction with a similar defect of hematosin. It would seem that, under such circumstances, the functions of the brain are exercised irregularly, lan- guidly, and at length, not at all, in consequence of the failing supply of its appro- priate stimulus through the arteries. Another striking circumstance observable in this disease, is a readiness of various organs of the body to inflame, and particularly of the serous membranes. According to x\l. Solon, who has lately published a thick volume on Albumimme, this disposi- tion has not been so manifest in France ; but of its frequent appearance in this country I can add my own testimony to that of Dr. Bright, of Dr. Christison, and of Dr. Gregory. Such intercurrent acute inflammation is not an uncommon cause of the patient's death. The pleura appears to be much more often affected in this manner than either the peritoneum or the pericardium. It follows from this tendency that when we come to inspect the dead body, we seldom find the kidney to be the only part in which structural changes are plainly visible. Most commonly evident traces of disease are met with in various organs. Disorder of the stomach and bowels is, certainly, a frequent companion of the renal malady: nausea, vomiting, flatulent distension, diarrhoea. It would appear, however, that these incidental and secondary complications pre vail with irregular frequency in different places. The}- are probably determined, in some measure, by local and peculiar agencies. Thus vomiting and diarrhoea have been more familiar to the Edinburgh observers than in London to Dr. Bright, or in Paris to M. Solon : while the headaches and coma, so often witnessed by the British physicians, have been comparatively uncommon in France. Disease of the heart, if not a secondary consequence, is a verj'^ frequent accompa niment of Bright's kidney. It is probable that the cardiac disease, and the renal disease, have sometimes no connection in respect to cause and effect, but are both results of some common cause ; of habitual intemperance, for example. I am, however, of opinion that the renal malady has a direct tendency, by its effect upon the blood, to generate disease of the heart. It induces anaemia ; and anaemia, RS I shoAV?^ you on a former occasion, implies debility of the muscular texture of the NATURE OF THE DISEASE. 885 heart, and leads to dilatation of its cavities ; and the weak muscle, becoming irritable also, grows thicker as it labours more. In fact, this is the kind of cardiac disease which, more than any other, has been found coincident with the peculiar change in the kidney. Among 100 cases, recorded in a tabular form by Dr, Bright, there are 27 in which no affection of the heart could be detected. In 52 instances the heart presented the characters of hypertrophy, and of these no fewer than 34 were free from, any trace of valvular disease. Among the 34 there were 11 cases of disease affecting the aorta : in the remaining 23 no cause for the existing hypertrophy and dilatation could be found in the heart itself, or in the great blood-vessels. The true cause may therefore be reasonably supposed to have been the renal disease, ope- rating upon the involuntary muscle through the quality of the blood. Whether the renal disease be ever produced by the cardiac, is more questionable. In the acute renal affection, when it proves early fatal, the kidney is always found to be gorged with blood. And the customary intermixture of blood with the urine warrants the belief that the same condition was present in the patients who have recovered. From this state of engorgement springs, apparently, the subsequent series of changes. It is therefore a plausible conjecture that whatever tends to pro- duce congestion of the kidney, tends also to aggravate, and may even cause, the peculiar changes in question. I need not now tell you that disease of the heart does frequently occasion congestion of the venous system, and gorge the viscera with blood. Under this influence the liver often enlarges. On the other hand, disease of the heart, even such as gives rise to venous congestion and to dropsy, often lasts long, and proves ultimately fatal, without the occurrence of albuminous urine, and without any appreciable change of structure in the kidney. Pain or tenderness of the loins, is sometimes, and sometimes only, an accompani- ment of the renal disease. This symptom is more often present in the early than in the later stages of the malady. It occurred in one-third of twenty-eight cases narrated by M. Solon. Dr. Gregory noticed it in the half of his patients. The causes of the disease of which I have been endeavouring to sketch the out- line, are often obscure. Its more obvious symptoms, in the chronic form of the malady, have been observed, in very many instances, to begin soon after the ex- posure of the body to wet and cold under unfavourable circumstances. But it is by no means certain — indeed the probabilities preponderate on the other side — that, in these instances, the renal disorder had not previously existed in a latent state. It is certain, however, that the acute kidney affection, which may be considered identical with febrile dropsy, does often ar.se under similar circumstances of ex- posure, and is attended with a marked disturbance of the functions of the kidneys. And Bright's disease, in its chronic form, has been noticed as occurring in persons who had previously suffered, and had apparently recovered from, an attack of febrile dropsy. Are we not warranted in believing that the recovery was imperfect in such cases ? that the kidney had sustained irretrievable injury ? and that the disease, although from the treatment employed, or by lapse of time, it had become tranquil « or latent, was ready again to give indications of its existence upon any repetition of its exciting cause ? Again, it is matter of common observation that intemperate habits have often pre- ceded the development of this disease. Yet we may conclude that intemperance in drinking is rather a predisposing than an essential cause, from the fact that the malady is not unknown among children, and other persons whose manner of life has been strictly sober. I had lately an example of this in a young girl, fifteen years old, who had never menstruated. And this leads me to remark that the renal disor- der has been known, in many instances, to follow a sudden check or suppression of the cataraenia. It has sometimes seemed to owe its origin to blows received upon the loins. The complaint happens at all' ages: less often, however, in extreme youth than afterwards. Sabbatier records that he saw, while in the service of M, Baudelocque, a young infant affected with anasarca and albuminous urine. The first case described by M. Solon is that of an infant, seventeen months old, in whom similar symp- toms appeared shortly after exposfe to cold and wet. In 1838 a boy between 886 bright's kidney. five and six years old, anasarcous and passing bloody and albuniinous urine, was in the Middlesex Hospital, under the charge of my colleague, Dr. Wilson. M. Con- stant, in the Gazette Medkah for 1835, citps the case of a child of five years of age ; and M. Rayer gives two plates, representing the kidneys of two children, the one five and the other six years old, who both died of dropsy with albuminous urine, the sequel of scarlet fever. In each of these the changes described bj'^ Dr. Bright were well marked, and the bulk of the kidney was considerably increased. The malady is, however, much more common in adults : not, in all probabihty, because the kidney is more readily susceptible of it at one period of life than another, but because, as life advances, the circumstances which tend to produce or to foster it, become of more frequent operation ; intemperance, exposure to great vicissitudes of temperature, and (perhaps) disease of the heart. It occurs, I presume for the same reasons, oftener in men than in women. Dr. Christison suspects that Bright's kidney happens chiefly in persons of scrofu- lous habit ; and he found it, in several instances, coincident with phthisis pulmonalis. My own experience would not have led me to that opinion. I partake of M. Solon's doubts, whether the co-existence of pulmonary consumption and of this renal malady is more than casual. Dr. Bright tells us that " the instances in which phthisis, or any form of scrofulous or tubercular disease, has been connected with the renal affec- tion, have been decidedly rare." What, after all, is the true character and essence of the organic metamorphosis which constitutes this formidable disorder, Bright's kidney ? All that has been as- certained of its early stages, of its course, and of its causes, furnishes to my mind a strong presumption that the structural change, in all its varieties of aspect, may be ultimately traceable to an undue accumulation and stagnation of blood in the blood- vessels of the kidney. Those curious arterial bunches, the Malpighian bodies, ap- pear especially to be over-filled and obstructed. Raj'-er calls the complaint albwni- noifs nephrifis; and perhaps the congestion (which unquestionably is present in what I consider the acute form of the malady) may sometimes pass into chronic in- flammation. We do not, however, find that it ever terminates in suppuration : yet suppuration is no uncommon event of true inflammation of that part, excited by vio- lent injuries, or by the lodgment of calculi within it. It seems to me more probable that the mischief done to the kidney is owing to extreme congestion, and its usual consequences — the oozing forth of the blood in substance, or of some of its constitu- ents, into the interstitial textures, as well as into the excretory tubes of the kidney. The appearance of these ingredients of the blood, and even sometimes of blood itself, in the urine ; the increased size of the gland in the earlier stages ; the various shades of colour which its surface and parts of its interior present, as the colouring matters of the effused fluids are more or less absorbed ; the impermeability of those altered parts by artificial injections ; the ultimate shrinking and hardness of the organ, as the disorder becomes chronic, and absorption proceeds ; these are all consistent with this theory. It is plain that the morbid conditions of the urine depend, in part at least, upon the mechanical transudation of certain portions of the blood, which pass through the kidney unchanged, as through an inert filter. Mixed with the urine we find serum, with its albumen, and its salts, which diminish the acidity of the mixture, or even render it neutral ; and in many cases we find more or less of the colouring mat- ter also of the blood. Those portions of the extravasated fluid which have no outlet of escape, solidify, and thus obliterate the natural texture of the part they have in- vaded. The obstruction of the emergent veins of the kidney by firm clots of blood is in harmony with the same supposition. When the kidney is thus spoiled, its natural function is imperfectly or but partially performed. The change which it should effect upon the blood by purifying it from urea, fails to be accomplished. The albuminous impregnation, and the other altered qualities of urine when voided, maybe explained either by supposing that the secret- ing power of the whole gland is interfered v/ith, but not absolutely suspended ; so that the urine is incomplet'ely elaborated : or, by supposing that portions of the gland are spoiled, and portions remain sound and effective ; that true urine is formed by the healthier portions, and mixes with the constituents of the blood wKich pass, as ANASARCA. 887 such, througli the diseased portions. The latter of these hypotheses :ys most in ac- cordance with the fact, that in the advanced stage of the disorder (when we may- conceive the spoiled parts to have become mere solid unchanging masses) the albu- men is apt to disappear from the urine : and also with the fact, that complete recovery does, sometimes, appear to take place ; in which cases we may imagine that, although a small portion of the substance of the gland has undergone irremediable change, enough of it remains healthy to serve the wants and purposes of the economy. I have yet something to say respecting the dropsy, which is so common an ac- companiment of these renal changes ; but I must d ^fer it till to-morrow. LECTURE LXXIX. Anasarca; its consideration, resumed. Distinction of chronic General Dropsy into cardiac and renal. Characters and signs of each of these varieties. Treat- ment. We were yesterday occupied with the circumstances of that remarkable disease, which has never received a good distinctive name, but which is sometimes called Bright'' s disease, after the distinguished living physician who first recognized and described it, sometimes yellow degeneration of the kidney, sometimes granular dege- neration. I endeavoured to represent to you by words and by drawings, thj morbid appearances that are most commonly noticed in the several stages of the complaint : which morbid appearances may, one and all of them, be traced (as I think) to con- gestion of the kidney ; to the detention of blood in that organ, and to the physical consequences of such detention. I spoke of the symptoms which appear essential to the malady, and which consist in certain striking changes in the urine and in the blood of the patient. I mentioned also the symptoms which are incidental to the renal disease. But of one of those incidental symptoms, or secondary consequences, I postponed the full consideration till to-day ; I mean the anasarca, with which, most commonly, yet by no means always or necessarily, it is complicated. This is, for several reasons, a very important symptom. It is usually the first thing that prompts us to suspect, and to inquire after, the renal malady. It was through his researches into the relation subsisting between chronic dropsy and the conditions of the urine, that Dr. Bright was led to the discovery of the associated affection of the kidney. The dropsical accumulation adds greatly to the patient's distress, and sometimes constitutes nearly the whole of it. It adds proportionally to his danger. Moreover, it is that consequence of the renal disorder over which our curative measures have the most control. Indeed, under this complication we have, practically, to consider the remedies of the dropsy, distinct from the remedies of the renal change. In most cases, at the outset at least of the dropsy, the skin is dry, and the urine is scanty : and the anasarca is observed to increase, or to decrease, as the quantity of urine diminishes or augments. The aqueous fluid, Avhich should escape from the surface and through the kidneys, collects in the subcutaneous areolar tissue. As the disorder advances, the tendency to effusion of serum through the sides of the blood- vessels is probably increased, not only by the sluggish movement of the blood in the veins, from progressive debility of the heart, but also by the cause of that debility the thin and watery condition of the blood itself; a condition which I yesterday pointed out to you as one of the most uniform and striking effects of the primrry disease. And here I again take up the subject of anasarca and gene 'al dropsy. You will remember that, in the earlier part of the course, I entered somewhat fully into ihf general pathology of dropsies. At the same time I promised you that I would after- wards, and when you were better prepared to understand them, endeavour more fully 888 ANASARCA. to explain some grand distinctions which have been found to exist between different forms of general dropsy. Having now, at last, brought before you all the ojganic changes which are apt to give rise to anasarca, I am in a condition to redeem that promise. In doing so, I shall probably have to remind you of some things which you have already heard from me. ^^nasnrca, you will please to recollect, signifies the filling up of a considerable part, or of the whole, of the subcutaneous areolar tissue, with serous or watery fluid ; and when to this is added a collection of liquid in the large serous cavities also, we call the complaint general dropsy. It is obvious that this condition may exist, and in nature it does exist, in various degrees : from slight infiltration of the areolar tissue, scarcely noticeable until, after some hours passed in the upright posture, it accumulates in visible oedema about the ankles — to the other extreme, in which the integuments are everj'^where stretched to the utmost, even to bursting; the insteps bulging upwards; the legs and thighs enormously enlarged, cylindrical, unshapely, and exhibiting partial vesications ; the surface of the trunk of the body capable of being kneaded and moulded hke dough ; the skin of the penis distended, and, in consequence of its confinement by the fras- num, twisted and circumvolved so as materially to impede the outward passage of the urine ; the scrotum, as big as a child's head, preventing the miserable patient from approximating his thighs, and from lying upon either side ; the hands swollen ; the face and neck bloated. With all this, the peritoneum is generally full of hquid, and at length the pleurae ; and as the scene is about to close, there is water in the ventricles of the tirain, and an anasarcous pia mater. Now, from whatever cause this watery condition of the whole body may arise, the effects resulting yj-om the presence of the water are the same. And of what do patients in this state usually complain ? Why, of shortness of breath, and palpitation of the heart ; of a sense of impending suffocation if they intend to lie down, or actively to bestir themselves ; of tightness and distress across the epigastrium, re- lieved somewhat by eructation, augmented by food and drink ; of weight and stiff- ness of their limbs ; and, sometimes, '^f drowsiness. The explanation of all this is easy and obvious. The shortness of breath may be accounted for on various grounds : by oedema of the lungs themselves, a state that is revealed to us through auscultation ; by water in the pleura ; by the pressure up- wards of the diaphragm, which embarrasses still more the labouring heart and lungs ; and i\\\\ upward pressure is increased by any kind of distension or repletion of the stomach — diminished when the stomach is collapsed, and the upright position is maintained. The heaviness and want of pliability of the unwieldy Umbs are, hke the rest of these phenomena, purely mechanical. All parts are oppressed by the unnatural load of water. But we must look beyond the dropsy, and inquire whether the complaint has set in suddenly, and simultaneously with febrile disturbance, invading all the districts of the body at once, and quickly reaching its present degree ; or whether it has crept upon the patient slowly and by stealthy steps : whether it has had any obvious or probable exciting cause ; or whether it has approached insidiously, we know not whence or a hy : whether (in a word) the case be one of active and febrile dropsy, or of chronic and passive. No'vV, setting aside, for the present, an)'- more particular consideration of the acute or febrile form of general dropsy, and contemplating those forms only which are chronic, we find that all, or nearly all of them, may be arranged in two great classes ; those Avhich depend upon disease or debility of the heart forming one class, those which depend upon disease of the kidney constituting the other. To these classes we accordingly apply the terms cardiac dropsy and renal dropsy. They are often combined in the same individual ; but, taking the pure cases of each form, we may proceed to inquire into their peculiar features, how they may be distinguished, and rthat differences of treatment they may require. And first of cardiac dropsj^ The mode in which disease of the heart may occasion general dropsy has been sufficiently explained already. We infer that the dropsy, in a given case, has this CARDIAC DROPSY. 889 origin, if we find that thoracic symptoms, such as cough and dyspnoea, preceded the, dropsy : or if we perceive direct signs of cardiac disease, such as distended jugular veins, irregular movements of the heart, unnatural impulse, altered sounds; or, if we trace the history of some previous acute disease, affecting especially the left side of the thorax: or if we learn that the patient has formerly suffered acute rheuma- tism : or if the patient's age is so much advanced as to make it probable that some of those organic changes in the heart and large blood-vessels are in progress, which are almost natural in the dechne of hfe. And our inference is confirmed if there be no discoverable indication of renal disease. But we see many persons who labour unequivocally under organic disease of the heart, yet who survive, even for many years, without becoming dropsical. The interesting question therefore arises, of what kind of heart-disease is dropsy a conse- quence and symptom ? You already know the answer. It is such disease as offers a certain amount of permanent obstruction to the passage of the venous blood. Hence, dropsy is especially associated with dilatation of the right chambers of the heart. It would not be correct to say that the anasarca is dependent on such dilata- tion, for the dilatation itself is at once an effect and a sign of impeded transmission of blood from the right side of the organ. Nor is such dilatation a necessary attend- ant on the general accumulation of water. The impediment may be sufficient to gorge the right cavities, while it is yet too slight in amount, or too recent in dura- tion, to have dilated them. What, then, are the physical conditions which oppose to the blood in the veins such an impediment as we are now considering? The two great vital organs con- tained within the thorax, the heart, namely, and the lungs, form different parts of one common mechanism, the object of which is to supply every tissue of the body with blood that has recently been purified by exposure to the air ; and these organs, thus closely related in their functions, are moreover so reciprocally dependent, that structural disease occurring in the one, tends to produce disease, sooner or later, in the other also. And I wish you again to observe the order and direction in which disease is, almost always, propagated from one part of this apparatus to another. It is a back- ward direction — opposite, I mean, to the course of the blood. There are, strictly speaking, two hearts, which he side by side in respect to their anatomical position, but which, reference being made to their vascular inter-communication, are really separated from each other by the lungs. The great veins precede, and the great arteries follow, this chain of connected organs. Disease occurring in any one part of the chain becomes a cause of consecutive disease in the part immediately behind it. And this law obtains, as I have shown you before, in regard to the several chambers of the heart, considered as a single organ. Thus, structural disease situated at the aortic outlet of the heart, and of such a kind as to hinder the exit of the blood from the left ventricle, gives rise to permanent changes in that ventricle ; to hypertrophy with, or less commonly without, dilatation. The hypertrophy is strictly a compensating and conservative change ; and when it is exactly proportioned to, and keeps pace with, the impediment which has given it birth, so as precisely to balance and countervail it, no delay takes place in the stream of arterial blood, and the injury is, as yet, confined to the left ventricle. That chamber is remodeled, and adapted to its purpose by the vis medicatrix naturae; and no other evil manifests itself than, perhaps, some shght encroachment and pressure upon the neighbouring parts, in consequence of the augmented volume of the heart. So long as the mitral valve remains healthy and effective, it offers a barrier of pro- tection against the extension of the disease in the direction which is retrograde to the course of the blood. But at length, in most instances, the stress becomes sensible further back. The left auricle and the pulmonary veins become choked and dis- tended ; the blood is detained in the lungs. Then commences dyspnoea : at first occasional only, whenever the heart is tasked with the conveyance of a greater quan- tity of blood in a given time than usual, as in brisk movements of the body, or sud- den emotions of the mind ; or when it is oppressed by circumstances that diminisQ 3z 890 ANASARCA. :he capacity of the chest ; by a full meal, therefore, by flatulent disten^'ou of the Biomach and intestines, by the recumbent posture. Afterwards the shortness of breath becomes more or less constant and distressing. Now this loaded and embarrassed state of the lungs, even when it is permanent and has reached a considerable degree, may exist without materially interfering with the functions of the right or venous heart : for the pulmonary plethora may be reheved by increased secretion from the bronchial mucous membrane. Dyspncsa, even when it has become habitual, may piecede for some time any appearance of dropsy. At last, however, the effects of the original evil augmenting and extending, the right ventricle also becomes unable duly to propel its contents into the pulmonary vessels; it continues morbidly full, is first distended occasionally, then permanently, and dt length really dilated ; and with that dilatation we have a turgid venous sys- tem, of which we see a part in the prominent veins of the neck. In this way then may be explained a series of symptoms which you will often witness, and be consulted about, in persons who are growing old. You will find irregularity of the pulse; preternatural impulse perhaps of the heart; occasional snortness of breath ; large crepitation, habitually audible in the lower portions of the lungs ; more or less expectoration, sometimes tinged, sometimes even loaded, with biood. Eventually the ankles begin to swell ; and the patient (if his life is not cut short earlier in some other way) becomes by degrees decidedly and universally dropsical. Many of the direct signs of diseased heart may exist, therefore, w^hile there is no anasarca : intermissions and irregularity in its movements, palpitation, the impulse proper to hypertrophj'. But when dropsy has supervened, we may expect also the signs which denote dilatation of the right chambers. The heart is heard and felt to beat beyond the prcecordial limits ; the pulsations become feeble and unequal, if they were not so before ; the patient is liable to fluttering palpitations, to extreme and panting dyspnoea on the shghtest exertion, even on taking food into the stomach, or adopting the recumbent posture ; his skin assumes a dusky hue, and his lips and extremities are apt to be livid. In these cases the anasarca first becomes manifest about the ankles. During the earlier stages the oedema disappears in the night, and returns towards the next even- 'iig. It is sometimes confined, for a long while, to the legs ; but ultimately it creeps up towards the trunk of the body ; the loins and flanks become doughy, the scrotum fills, and water collects in the serous bags of the abdomen and thorax. In extreme cases the dropsy is universal, pervading the areolar tissue of the head and face and upper limbs. As the accumulation of serous liquid is commonly gradual, the reticular tissue, partly perhaps through maceration, but chiefly from continued pressure and stretch- ing, loses its elasticity ; and the cedema is soft, and pits readily. Sometimes, the fluid continuing to increase, the cuticle is raised by it, and large vesications take place on the limbs ; or some part of the areolar tissue sloughs, and a breach of surface is made, and the fluid drains off by this vent in great abundance, to the signal relief of the patient. This beneficial accident furnishes us with a valuable practical hint. Such, then, is the consummation of disease commencing in the left heart, and working its gradual way, through the lungs to the right heart. But the obstacle may originate at a less distant link in the chain. The circulation may be checked, first of all, in the intermediate lungs : and it may be worth our while to consider, for a moment, the relations which subsist between general dropsy and certain pulmonary diseases. Whenever, in pneumonia, a large portion of one or of both lungs becomes impei- vious to air and to blood — or when pleurisy fills one side of the thorax with liquid, which, by its pressure, shuts out both air and blood at once from one-half of the respi- ratory apparatus — the egress of the blood from the right heart, and, therefore, from the venous system, must be checked. We might expect that dropsical effusion would be the result of these changes ; and in truth it does sometimes occur. That it does not happen more frequently is to be attributed, I believe, to the free evacuations, and RENAL DROPSY. 891 the strict abstinence, which are early put in force in those complaints, and which rel'eve the venous plethora before it produces eflusion. So, again, luncrs that are hollowed out in large cavities or rendered solid over a wide space by numerous tubercles, are manifestly incapable of admittingr inio their vessels from the right ventricle the ordinary quantity of venous blood. In these cases, however, the whole mass of blood is diminished, and kept within the limit which does not imply distension of the veins, by the constant agency of various causes ; by the imperfect nutrition consequent upon abdominal disease ; by the some- times copious expectoration ; by the wasting diarrhosa ; by the profuse nocturnal sweats. Accordingly anasarca is an unusual symptom in pulmonary phthisis, or shows itself in the latter periods only of the disease, in the form of oedema of the legs : and its occurrence then is mainly owing to the debihty which affects, in com- mon with the other muscular parts of the body, the moving organ of the blood. The pulmonary disease which more commonly and certainly than any other, though often very slowly, leads to dropsy, is emphysema of the lungs. I showed you, some time ago, that in this morbid condition many of the smaller blood-vessels of the lung become gradually obliterated ; and when the disease is extensive and advanced, large portions of the organ are visibly white and bloodless. Meanwhile, the nutrition of the body is not impaired ; the same quantity of blood continues to be returned towards the heart, but it finds not a ready entrance into the pulmonary blood-vessels, when delivered from the right ventricle. A certain amount of accu- mulation becomes habitual in that chamber, and in the great veins ; and at length the capillary vessels feel the mechanical congestion, and more or less anasarca ensues. So much for dropsy that is purely cardiac. Let us next consider the circumstances from which, during the lifetime of the patient, we draw the conclusion that the dropsy he exhibits is of renal origin. There is nothinsf, that I know of, very peculiar or distinctive in the characters of the anasarca itself. When the renal complaint sets in suddenly, and with acute symptoms, dropsy usually supervenes soon. So also, during its more chronic pro- gress, anasarca is apt to show itself, or to increase, whenever local inflammation, or febrile disturbance, happens to arise. The more rapid and copious the effusion, the less do the dropsical parts pit upon being pressed. It may be said also of this renal form of dropsy, that accumulation in the larger serous cavities is not, in general, a prominent feature. If we find, upon due scrutiny, no material or adequate embarrassment of the respiratory functions, no deviations from the natural sounds of the heart, no derange- ment of its regular movements, no alteration in the force of its pulsations, or in the space over which they can be felt and heard, no distension of the large veins of the neck — then we have reason for suspecting that the anasarca is connected with some vice of the kidney. But we cannot infer from the presence of heart-symptoms, that the kidney is free from disease. Our judgment is guided, or assisted, in some degree, by the complexion of the patient. When general dropsy depends upon disease of the heart, the cheeks and lips are occasionally florid, often purplish or hvid, frequently dusky and loaded. Sometimes (as in chlorotic women, where the heart may be temporarily distended without any positive organic disease, and the blood is thin and poor) the face and mucous membranes are pale : but in the renal variety of dropsy there is a very cha- racteristic hue ; an evident lack of red blood, indeed, in the capillaries, but withal an unhealthy dingy sallowness, significant, to a practised eye, of some deep-seated al- teration of structure. Our suspicion that the kidney is the organ primarily in fault is strengthened, if we trace certain accidents in the history of our patient. An attack, for example, of illness, attended perhaps, with temporary swelUng of the body and disturbance of the urinary functions (acute dropsy, in short), soon after some exposure, under un favourable circumstances, to the influence of cold ; either applied to the external surface, or to the stomach by a draught of cold drink. For, as I told you yesterday, there is reason to believe that in acute dropsy is often laid the foundation of thos« 892 ANASARCA. peculiar changes in the kidney which, since they xere first pointed out by Dr. Bright, Lave been chiefly studied in their connection with chronic dropsy. That as rheu- matic carditis may occur, and become latent as to its effects for some time, and j'et implant the germs of future cardiac dropsy, so the stress or strain which befalls the kidney in cases of febrile anasarca, may set on foot a morbid process that long works silently and unobserved, but at last declares its operation by symptoms ; the repro- duction of the dropsy in a more chronic form being the most significant symptom of all. The acute attack may have been forgotten ; there may have been no obvious (though there may have been ill-understood) indications of the renal affection ; and its existence has been, therefore, unsuspected. The discovery of intemperate habits would also be of importance in aid of our di- agnosis, if these same habits had not a like influence in causing disease of other organs as well as of the kidney, and especially of the heart. There may, however, be no such episodes as these in the patient's history. The dropsy may have come on im- mediately after some exposure, or obviously injurious influence, yet not with acute symptoms, and in a temperate subject : in which case it is probable that the renal disease had pre-existed in a latent state. Or the anasarca may have stolen on by degrees, without any apparent cause. But the most conclusive evidence of the renal disease is to be found in the condi- tions of the urine : which were fully explained to you in yesterday's lecture. I shall therefore only add four rules upon the subject, which have been laid down by Dr. Christison, and generally acquiesced in by Dr. Prout. These rules assert that or- ganic disease, or granular degeneration, or granular disorganization of the kidney — all which phrases we may condense into the compendious expression "Bright's kid- ney" — is present : 1. In most cases of febrile dropsy, including those which are consequent upon scarlet fever. To this proposition I have already given my full assent. 2. In all cases of anasarca, wherein the cedematous parts are elastic, and do not pit upon pressure. I am not so sure of this rule. I believe that the firmness of the cedematous parts has relation rather to the rapidity with which the effusion has taken place, than to the local origin of the dropsy. In proportion as the accumulation in the areolar tissue has been chronic and gradual, does the swelling receive and retain indentation from external pressure. 3. In most, or all cases of dropsy attended with diuresis, provided the urine be not saccharine. Such cases. Dr. Christison truly remarks, are far from being un- common. Of course the diuresis here spoken of is such as occurs independently of diuretic remedies. 4. In all dropsies associated with urine of a very low specific gravity (say below 1010), and not exceeding the natural standard of quantity, whether it be albuminous or not. To the last two rules there are probably very few exceptions. The dropsy which is dependent upon " Bright's disease" yields, not unfrequently, to treatment ; but it is prone to recur. Of the renal disease itself the prognosis is, no doubt, very unpromising. Yet I do not think so despairingly of these cases as I once thought ; and as many think. I have known a few instances of what seemed complete recovery after well-marked symptoms of the disorder. Certainly success enough has followed careful treatment to encourage us to use all diligence in prose- cuting such remedial measures as are already known, and in devising new ones. I have been speaking of dropsies that are purely cardiac, and of dropsies that are purely renal. But I have already told you that disease of the heart and disease of the kidney, frequently go together; and I have endeavoured to estimate their relation, in such cases, to each other. When both organs are structurally affected, the dis- position to dropsical accumulation must evidently be augmented. What share they have, respectively, in producing the dropsy, it would be very difficult, and practically ;t is not very important, to determine. In chronic general dropsy of a purely cardiac origin, the kidneys, being sound, offer the most convenient and eligible channel for carrying off the superfluous water. Diuretic medicines, therefore, rank among the most important of our curative expe- dients. AVhen they fail to act, or prove insufficient for the purpose sought, we next RENAL DROPSY. 893 have recourse, the state of the bowels permitting, to drastic or hydragogue purga- tives. Diuretics are notoriously of most uncertain operations; sometimes completely answering our wishes, oftener perhaps disappointing them altogether. When the urine is strongly acid, and deposits, on coohng, a sediment like brick-dust, it may be well to try, at first, the alkaline diuretics, and particularly the salts of potass. Nitre added to the common saline draught ; or a combination of the acetate and bicarbon- ate of potass ; or the bitartrate in small doses ; or the iodide of potassium : or the liquor potassse. In my own experience the tincture of squills also has seemed to correct this superacid and turbid condition of the urine, while it increased its quantity. The benzoate of ammonia is another salt which I have found to operate very powerfully, in several instances, as a diuretic. Digitalis sometimes promotes, in a remarkable degree, the flow of urine ; and this, in my judgment, is its most useful and manageable property. Small quantities of the tincture, or of the infusion, may be added to other formulae. Or the powdered leaves may be combined in pills. But one of the best modes of exhibitino- dio-itahs for this purpose is to give larger doses of the infusion, half an ounce, for example, in some cordial water, at intervals of four or six hours, till three doses have been taken in succession ; and then to pause and note its effects ; and to repeat the three doses, or not, accordingly. The spirit of nitrous aether, and the compound spirit of juniper, have both of them well-marked diuretic properties, and may, with propriety, be added to most of the liquid formulae for augmenting the discharge of urine. And, as vehicles for more active, or more concentrated ingredients, those vegetable infusions or decoctions should be chosen which are reputed to possess similar virtues ; such as the decoction of broom-tops, or of juniper-berries, or of winter green, or the infusion of buchu. Squills, turpentine, the tincture of cantharides, are drugs of a more stimulant nature, more peculiarly adapted to cases in which there is no febrile disturbance, and the kidneys are obstinately inactive. Sometimes a combination or farrago of diuretic substances proves more efficacious than larger doses of any of the ingredients administered singly : and the operation of some of these combinations is undoubtedly quickened and exalted, in many in- stances, by the addition of mercury. A fluid drachm of the officinal solution of the bichloride in each dose of a mixture ; or small quantities of calomel or of blue pill when the medicines are given in a solid form. A very useful pill of this kind, much recommended by the late Dr. Baillie, consists of three or four grains of the pilula hydrargyri, mixed up with one grain of the dried powder of squills, and half a grain of the dried leaves of digitalis; to be given twice or thrice a day. Dr. Baillie states that squills and digitalis are much less effectual by themselves, than when combined with mercury. Tn choosing purgative drugs to aid the effect of diuretics in carrying off the drop- sical fluid, or to take their place when these fail to act, we select those which produce copious and watery discharges from the bowels. A combination of jalap and cream of tartar has been long and deservedly esteemed for its excellent operation in this way. Gamboge is also a good cathartic. It may be given two or three times daily, in grain or two-grain doses, with a drachm of cream of tartar, suspended in two ounces of peppermint water. Or half an ounce of cream of tartar, mixed in six ounces of peppermint water, may be administered in one dose every morning. Croton oil, and elaterium, are still more powerful evacuants of serous liquid from the intestines. One or two drops of the former, or from a quarter of a grain to a grain of the latter, will be about a proper dose. It is astonishing how much relief to the feelings of the patient, and how great a diminution of the dropsical symptoms, are sometimes obtained by these active cathartics. Patients will earnestly beg for a repetition of them, even when their operation is attended, for the time, with consi- deraOie pain or sickness, and much general distress. In addition to these measures for the removal of the collected water, auention must be paid to the actual condition of the heart. If the dropsy has been the result of anaemia, or of cachexy of the system, you must endeavour to strengthen your patient, 3z2 804 ANASARCA. nnd to repair his impoverished blood, by nutritious food and tonic medicine, and especially by the administration of steel. I told you formerly that preparations of iron have an exceedingly good effect, oftentimes, even in cases of organic disease of the heart, consisting in dilatation and tenuity, and consequently weakness of its muscular parietes. On the other hand, if there be violent palpitations of the heart, with a strong heaving impulse, you may appease the excessive action, and afford sensible comfort to the patient, by applying leeches, from time to time, to the prsecordia. Of the renal variety of chronic general dropsy, whether pure or mixed, the treat- ment is less accurately ascertained. The uncertainty which has perplexed men's minds respecting the nature of the renal disorder, has extended, in some measure, to their choice of remedies for it. Whenever (in renal dropsy) acute symptoms and febrile disturbance occur, much relief may be expected from the abstraction of blood. When drawn from a vein, it usually shows the huffy coat. The existence at the same time of pain in the loins, would" indicate the propriety of applying cupping glasses to that part. Nevertheless, the impoverishing effect of the disease itself upon the blood, and the probable de- pendence of some of the more distressful and alarming symptoms upon the thin serous condition of the circulating fluid, as well as the increased facility with which the dilute blood may transude outwards — these are circumstances which should in- duce every cautious practitioner to have recourse to this heroic remedy only when it is clearly demanded. One definite object, in the renal as well as in the cardiac variety, is to remove the dropsical fluid, from which the danger and the suffering often chiefly proceed. But it is a more nice question, when the kidney is involved in the disease, how this is to be accomplished. Can we, with the same safety as in cardiac cases, employ diuretics ? It has been thought that we cannot. As the primary morbid state of the kidney is certainly often, and probably always, a state of congestion, it has been feared that direct diuretics, such as are calculated to cause, keep up, or augment congestion of the kidney, or to stimulate and irritate that organ, would be likely to accelerate the disorganizing process of which it is already the seat. Now, although these views are theoretical, and their justness has not yet been established by positive proof, you had better, when yoM can, observe the caution which they suggest. You had better endeavour to empty the distended cavities, and to relieve the loaded areolar tissue, through the bowels, or through the skin. Sometimes, however, — more often indeed than in cardiac dropsy — we have the untoward complication of irritable bowels, or habitual diarrhcea ; and then drastic cathartics are inadmissible. But when this complication is not present, they are eminently useful. Much benefit is sometimes derived from measures that act powerfully or steadily upon the cutaneous transpiration ; and especially from warm, or hot-air, baths. The hot-air bath is, in many rpspects, preferable to the common warm-water bath, and even to the vapour bath. Upon the principle of heterogeneous attraction, the escape of the liquid from the surface of the body is more promoted by a dry heat than by water artificially raised to a high temperature, and even than by an atmosphere made moist, as well as hot, by vapour. The risk, moreover, of exposure to cold, and the inconvenience and hazard of fatigues, are much less : for the hot air can be brought, with but little trouble or expense, to the patient as he lies in bed. I have often applied the sudatorium to patients labouring under renal dropsy, and they have ob- tained much relief from it : but the relief is seldom of itself sufficient, or of more than temporary duration. Still it is an expedient that should never be neglected; and in pursuance of the same indication, diaphoretic medicines should at the same lime be diligently exhibited. Dr. Osborne states that when the renal disease has been uncomplicated with other organic mischief, he has always found the dropsy to disappear upon the re-estabhshment of the functions of the skin. These measures failing — as fail they often will ; and diarrhoea forbidding the use of drastic purgatives ; or drastic purgatives and diaphoretics together proving insuf- TREATMENT 895 ficient ; we miisf, even in renal dropsy, choose the least of two evils ; or rather we must incur the risk of one possible and contingent evil, for the chance of obtaining what, if obtained, is a certain and positive benefit ; we must endeavour to remove the dropsical accumulation by means oi diuretics, whether these accelerate the pro- gress of the disease in the kidney or not. Such diuretics, therefore, are, in the first instance, to be selected, as seem the least likely to stimulate the kidneys injuriously. The bitartrate of potass has been found one of the most certain and useful. Digitalis also is esteemed safer, and therefore more proper for this purpose, than many others : and the simultaneous exhibition of these two has, perhaps, the surest effect of all. When diuretic medicines act as we intend them to do, and increase the quantity of urine, they are commonly of great service by reducing the dropsical swelhng. But they are apt to be very capricious and disappointing. In some unhappy caseL of renal dropsy I have tried every known form and combination of diuretics without augmenting the secretion from the kidneys. And sometimes, although a plentiful discharge of urine takes place, no impression is made upon the anasarca. It is yet an unsettled question whether mercury be advisable, or even admissible, in these cases. The current of medical opinion sets against it ; perhaps too strongly. It has been observed that salivation is apt to be produced by a small quantity of this drug; and to be unusually troublesome and severe, without bringing any commen- surate advantage. I mentioned to you formerly Dr. Farre's opinion, that mercury has the property of rapidly destroying red blood : if so, it must be regarded rather as an ally, than as an antagonist, of this malady. On the other hand, some patients have appeared to recover altogether, after passing through a furious salivation. One of the reputed virtues of the mineral is that it promotes interstitial absorption — a pro- perty which the changes apparent in the kidney in renal dropsy would seem to render valuable. When internal remedies prove inefTectual, and outward applications to procure sweating miss their aim, we turn to those mechanical expedients which (in either variety of general dropsy) often afford ease, and prolong life, and may even some- times, perhaps, achieve a cure. I have told you that the tense and stretched integuments occasionally give way ; the areolar tissue sloughs, and from the breach thus made water wells copiously forth, and great relief ensues. Sometimes, though very rarely, the whole of the accumulated liquid has so escaped, and the dropsy has not reappeared. The sore has healed, and the natural cure has been complete. This spontaneous mode of draining away the liquid has been imitated by art. For the unwieldy legs become painful as well as cumbrous; the integuments threaten to inflame, or to mortify ; and if we can diminish the tension by removing a portion of the included fluid, we avert or lessen this danger. The penis and scrotum also in the male, and the labia pudendi in the female, become, in many cases, enormously swollen, and hinder the exit of the urine, which is therefore spilled upon the tumid parts, rendering them erythematous and raw, to the grievous aggravation of the patient's sufferings. Now, seeing that vesications sometimes form upon the dropsical limbs, and give vent, in some degree, to the fluid, practitioners have been induced to follow that indi- cation by exciting artificial blisters. But they are highly dangerous ; leading often to gangrene of the surface thus inflamed. Within my recollection it was the custom to make incisions, with a lancet, in the oedematous legs. These gashes seldom healed again ; but degenerated into sloughing sores ; and not unfrequently they hastened the dissolution of the patient. A vast improvement upon these expedients is the modern practice of acupunc- ture, which consists in perforating the integuments here and there with a fine needle. It is surprising how much fluid may be let out in this way ; and how much relief may be bestowed by this trilling operation. The liquid trickles rapidly forth ; and I have known it soak through the patient's bed, and form a pool on the floor of the room. In one instance, a physician being the patient, the limpid fluid which ihu* 896 ANASARCA. oozed from a puncture in the thigh was caught, and collected in a glass, by means of a little gutter of oiled silk. It was found that ninety minims, or a fluid drachm and a half, escaped in a minute ; which is at the rate of eleven ounces and a quarter in an hour: and this drain went on for upwards of four hours. The surface on which punctures of this kind have been made, sometimes becomes red ; erysipelas supervenes, which it is difficult to arrest, and the patient sinks. In some of these cases the same event would probably have occurred, even although no punctures had been ,made, from mere tension of the integuments, and the pro- gress of the disease. When such appearances present themselves, the affected hmb should be kept in the horizontal position ; and strips of hnen, wetted with a solution of goulard, should be applied to the inflamed surface. Under the old system of incisions it was found (and reason would teach us to expect this) that there was more hazard of sloughing when they were made on the legs, than on the thighs. The risk is much less when needles are used. But even these punctures are not to be made without attending to certain precautions. They should not be too near each other : an inch and a half, at least, should intervene be- tween them. Neither should they be too numerous, nor too deep. The depth must depend upon the circumstances of the case ; and especially upon the place where the puncture is to be made. The needle must not be pushed so deep as to penetrate or wound any fascia ; for the danger of subsequent inflammation would thereby be increased. The peritoneum may, at the same time, require to be emptied in the same mechanical way, by help of a trocar. I am always loth to recommend tapping, until the symptoms actually call for it, and until all other means of dispersing the water have been tried in vain. But the circumstances that warrant or demand the per- formance of the operation, the dangers that attend it, and the means of obviating these dangers, were fully pointed out Avhen we were on the subject of ascites. By whatever means we may succeed in getting rid of the dropsy, there will still remain (except in the comparatively few cases that are unconnected with organic disease, and depend simply upon debility and aniemia) the necessity for guarding against the re-accumulation of the water, by remedial measures addressed to the fauky organs. You may sometimes keep the disease of these organs in check, even when you cannot cure it. In cardiac dropsies, besides the medicines already specified, andeviating tem- perance and regularity of life must be enjoined ; and the patient should carefully, and always, avoid all active motion or exertion of the body, and all strong emotion of the mind ; whatever, in short, might tend to hurry the circulation. You will scarcely be able to enforce this prudence, without plainly showing the patient the risk he will incur by its neglect. In the renal variety of the disorder, in addition to the appropriate remedies alreadj'' enumerated, particular attention must be paid to the avoidance of all exposure to cold and vicissitudes of the weather, and to keeping the surface of the body warm. Such patients should be constantly clothed in flannel from head to foot. To those who are able to choose their place of abode, I should strongly recommend resort to a warm climate. Some benefit may also be hoped for from counter-irritation — blisters or issues to the loins. The diet in the chronic forms of the disease should be nutritiv^e but unstimulating. M. Solon suggests that if, in the renal cases, urea be detected in the blood, the patient should be restrained from too animalized a diet. Dr. Budd has had the Bame thought, and has put to the test, I believe in the Hospital-ship Dreadnought, tlie utility of withholding all articles of food that contain azote. I have found this restriction entirely useless in one painful case, in which it was fairly enforced. la fact, tne principle of such restriction appears to be wrong : the urea is furnished to the blood, not in the primary assimilative process, but in that which is secondary and destructive. One more point, and I have done. Much unnecessary penance used to be imposed upon dropsical persons, by stinting their allowance of drink. It was natural to sup- CHYLOUS URINE. pose that the accumulation would increase in proportion to the quantity of liquid swallowed. But experience has shown this opinion to be erroneous, and " Crescit indulgens sibi dirus hydrops" has ceased to be more than a poetical doctrine. The patient may safely be allowed to exercise his own discretion in this respect. When the peritoneum is full, distress is apt to ensue upon the distension of the stomach by drinks ; but this source of suf- fering is soon discovered and avoided. The sick man is better able than his physi- cian to judge which evil is the greatest ; the torment of unslaked thirst, or the dis comfort that may be produced by its immoderate indulgence. LECTURE LXXX. Chylous Urine. Hsematvria ; its diagnosis, general and particular ; Local dis- orders of the Urinary Organs on which it depends ; Treatment. Abdominal Tumours. I HOPE I have convinced you that the morbid conditions of the urine are worth studying. You have heard, probably, of the quacks who call themselves "water- doctors," and who pretend that, by mere inspection of the urine of a patient living at a distance, they can tell what is the matter with him, and how he may be cured. This skill, which looks like conjuration, the scientific physician of the present day does really possess. Of some very important forms of constitutional disorder, and of some specific local maladies, he reads the sure evidence in the sensible and chemical qualities of the secretion from the kidneys. And I do not hesitate to say, that a rightly instructed person might form a more accurate opinion respecting a sick man fifty miles ofT, and prescribe for him more judiciously, upon being furnished with a vial of his urine, than some practitioners whom I have known could do, if they had the patient bodily before them. You may learn much (and so, no doubt, you ought) by prying into the arcana of the night-chair : but you may learn more,- I am persuaded, by the habitual perusal of the chamber-pot. 1 have not yet quite done with the subject. Sometimes urine is voided whi/^h appears to contain chyle. It looks white and milky, and stiffens as it cools into a tremulous jelly, like blanc mange, and takes the shape of the vessel into which it was passed. The coagulum gradually separates again into two portions : one of which is liquid and whitish, and when left at rest for a few hours, throws up to the surface a sort of creamy matter, containing (as cream does) a butyraceous or oily principle : the other is a delicate fibrinous mass, of flesh- like appearance, having a red tinge from the presence of some of the colouring matter of the blood. This is the character of the urine passed a few hours after a full meal. When the patient has long been fasting, the urine is simply opalescent, and the coagulum, small and partial. Dr. Prout attributes this curious deviation from the natural qualities of the urine to a double fault ; first, in the organs of assimilation ; secondly, in the functions of the kidney. The chyle, from some derangement of the assimilative process, is not raised to the blood standard ; and being unfit for its purpose, is ejected through the kidneys ; and these organs, instead of converting it, as usual, into the lithate of am monia, suffer it to pass through them unchanged. Of this rare disorder I have not met with an instance. Dr. Prout has seen more or less of thirteen cases. Five of the patients were males, eight females. Two of the males, and one of the females, were below the age of puberty. Seven of the cases occurred in natives of the East or West Indies, or in persons who had lived for many years in hot climates. Mr. Thomas informs me, that during a residence of ten v^ars in Barbadoes, he saw at least a dozen well-marked exaiaples of chyloiu ".57 898 HiEMATURIA. urine in negroes. It would seem, therefore, that a tropical climate predisposes cer- tain individuals to this affection. In one case, drinking cold water while the body was warm seemed to have been the exciting cause ; and exposure to cold was thought to have had something to do with the attacks in other cases. The general health suffers less than you might suppose. Two of the females, while labouring under the complaint, became pregnant, and brought forth healthy children ; and one of the two lived nearly twenty years, with the disorder upon hei all the time. In the slighter cases there is usually some degree of feverishness, some uneasi- ness in the back and loins, some thirst, a dry skin, and torpid bowels. When the malady is more severe, the symptoms approach to those of diabetes ; the thirst is more urgent, the appetite unnaturally craving ; and there is some degree of emacia- tion and debility. In this severer variety the urine is apt to coagulate before it leaves the bladder; and the patient experiences difficulty in passing it, the urethra being blocked up by the clots. Dr. Prout states that he has known this to constitute the most troublesome symptom of the disease. In one of the fatal cases the body was examined, and the kidneys found perfectly healthy. Occasionally the com- plaint ceases of its own accord, even for years, and then recurs, without any apparent cause. We may conclude from these circumstances that it is n purely func- tional disorder. With respect to treatment, little can be said. Dr. Prout has found several things of temporary service, in the chronic state of the affection. The mineral acids ; astrin- gents, such as alum, and the acetate of lead ; opium ; counter-irritation. But the suspended symptoms have always soon returned. Lastly, the urine may contain blood: and I proceed to consider some of the phe- nomena that occur in connection with hxmaiurla ^ under which term 1 would com prebend every kind of bleeding from the urinary organs. Blood alters, of course, the colour of the urine with which it is mixed ; giving it, in some instances, a bright red tinge, and causing it, in others, to assume a dark hue ; to become brown, like coffee, or even to approach to blackness. Hence we are some- times too ready to conclude that urine of a distinctly red colour, or so very dark as to appear almost black, derives its peculiar tint from blood that has somehow mingled with it. But. in truth, urine may be perfectly red, or nearly black, and yet be quite free from blood. There are certain substances which, when taken as food, invariably impart a red colour to the urine. One of these is the prick Ijr pear, or Indian fig as it is sometimes called, the cactus opimtla of botanists. When the Spaniards first took possession of America, many of them were alarmed by observing that they passed what they supposed to be bloody urine : bat it was soon discovered that the red colour of the secretion was owing to the liberal use they made of that fruit. Dr. Hennen, in his book on MilUary Surgery, quotes a precisely similar example from Elliot's Journal of his Travels for determining the boundary of the United States. He says that "his people ate very plentifully of this substance at an island of the iMississippi (Kayo-ani), and were not a little surprised the next morning at finding their urine appear as if it had been highly tinged with cochineal. No inconve- nience resulted from it. It would seem (he continues) that the juice of this plant rnay be analyzed into a crimson dye by other processes besides that of the cochineal insect." Another vegetable substance with which, in this country, we are more familiar, and which will produce the same effect, is beet-root. Desault relates the case of a person who noticed that he every morning voided urine of a deep red colour; exactly- such as would result from adding fresh blood to that hquid, except that no deposit rook place The man became frightened at this, and consulted M. Roux, who, after i>ome examination, began to suspect that the water owed its red appearance to some other cause than the admixture of blood. It turned out that his patient was in the habit of supping every night upon the red beet-root ; and as soon as, by M. Roux's advice, he relinquished this article of diet, he was freed at once from his supposed bloody urine, and froru his fears. I HEMATURIA. W9 A similar tinge is said to be given to the urine by the use of madder as food, by some species of strawberries, and by drinks made of sorrel. Logwood, which we sometimes use in medicine, has the same effect. It is right that you should know these facts : for by swallowing large quantities of such substances, and by complaining of sensations which they do not really feel, impostors may endeavour, without any difficulty, or pain, or danger to themselves, to deceive others into a belief that they are suffering under some serious and disquali- fying disease, and are proper objects of charity. Moreover, a knowledge of the effects of these vegetable matters may sometimes enable you, as in the case men- tioned by Desault, to remove unfounded anxiety and alarm from the minds of per- sons who are innocently and unconsciously giving themselves red urine. The natural tint of the urme inclines towards redness, independently of any admixture of blood, in many instances of fever, and of acute inflammation. Occa- sionally urine of a pink colour is passed by persons who are subject to obstinate dyspepsia connected with organic disease. This pink tint is most apparent when the water is contained in an opaque, shallow, white vessel. Again, urine of so deep a colour as to be called, in common parlance, black, may or may not owe that hue to the presence of blood. When blood is the cause of the unnatural colour, the blackness must be ascribed to the chemical action of some free acid upon the blood : as I showed you formerly to be the case with blood that is vomited in hcematemesis. 1 also pointed out to you some little while since, that the urine, in jaundice, some- times, seems to be black, when it is collected in large quantity, and in a deep vessel. This colour is merely a concentration of yellowness, as appears at once by diluting the urine with water. It then assumes a bright yellow colour. The aspect of the skin in icterus will always secure you against mistaking or overlooking this cause of black urine. There has been observed, also, though very rarely, a form of black urine, de- pending upon the presence in that £2cretion of a peculiar principle to which Dr. Marcet gave the name of melanic acid. The only specimen of really black urine that I ever saw, was shown to me by Dr. Prout ; who knew nothing, however, of the circumstances under which it was voided. It appeared to me to be full of coal- dust. With these two exceptions, almost all urine that is of a very dark or blackish colour owes that quality to the circumstance of its containing blood, which has been more or less altered, by various causes, from its original appearance. When blood is present in any considerable quantity, a portion of it subsides to the bottom of the vessel, and may be recognized without any difficulty. And even wh6n there is not enough blood to give a marked and characteristic deposit, a very small admixture of it will be found to disturb the natural transparency of the urine, rendering it of a smoke-brown or dull cherry colour; whereas the reddish or pink urrne which contains no blood is clear and untroubled ; and if, on cooling, it throws down a sediment, that sediment may be redissolved by heating the urine — a result which does not take place when a portion of blood has been deposited. Another rough test is, that a mixture of urine and blood tinges a piece of white linen dipped into it, of a red colour. A better criterion is afforded by gradually raising the sus- pected urine to the boiling temperature. If it contains blood, a grayish-brown floe- culent precipitate, consisting of coagulated albumen tinged with the colouring matter of the blood, will form, and gradually subside, and leave the supernatant liquid clear, and with its natural tint. But if you use the microscope, that will furnish you with the best evidence upon this point. If there be blood in the urine, there will be blood- corpuscles, turgid or collapsed, diffused through the urine, or collected at the bottom of the vessel : and whatever modifications they may present, they may always, Dr Bird says, be identified by "their non-granular surface, uniform size, and yellow colour under the microscope." We have by no means accomplished the diagnosis when we have merely ascer- tained that there is blood in the urine ; and that the case is a case of haematuna. The question remains, of what is such haematuria a sign. The blood emerges from 900 HiEMATURIA. the urethra, but it may have been poured out at any point of a long and somewhat complex tract of mucous membrane. It may have proceeded from one or both of the kidneys ; from each or either ureter ; from the bladder ; from the prostate gland, or from the urethra. Hsematuria strictly idiopathic must be very rare. Cullen remarks that neither he nor any of his friends had ever met with an instance of it. I shall mention presently the only example of hemorrhage from the urinary organs, apparently idiopathic, that has fallen under my own notice. Blood is excreted with the urine in that acute affection of the kidney which I have already spoken of as lying at the root of most, if not all cases of febrile dropsy. The albuminous urine proper to the chronic form of Bright's disease sometimes contains the colouring matter as well as the serum of the blood. Hsematuria is occasionally, I beheve, vicarious of some other hemorrhage, and especially of bleeding from the hemorrhoidal vessels : so that it is always right, in obscure cases, to inquire w^hether the patient has been habitually subject to hemorrhage from the rectum ; and if so, whether that hemorrhage is suspended. These cases have even been called hsemor- rhoides vesicx. Hcematuria occurs also, independently of any strictly local complaint, in the course of certain disorders which affect the system at large ; especially in scurvy and pur- pura hemorrhagica. Bloody urine is sometimes a symptom, and one of the most fatal augury, in typhus fever, small-pox, measles, and the plague. But setting aside these more general forms of hsematuria, let us inquire what local affections of the urinary organs themselves may give rise to hemorrhage ; and how, under different circumstances, we are to interpret this symptom. One very common source of hemorrhage from the urinary passages, is the presence within them of calculous matter. The pressure occasioned by the aggregation of the earthy mass, when it is formed in the kidney, or by its accidental change of posi- ion, lacerates, or lays open by ulceration, some of the smaller vessels with which .t is in contact. And in those cases in which a calculus descends into the bladder, and is ultimately voided, it may, in succession, give rise to hemorrhage, first from the kidney from which it is separated ; secondly, from the narrow tube of the ureter through which it is forced ; thirdly, from the bladder, which it enters, and wounds, or irritates ; and fourthly, from the urethra in the last stage of its progress out of the body. There will be the same liability to hsematuria, if the concretion, instead of coming down from the kidney, is formed originally in the bladder. The appearance of blood in the urine suggests, therefore, in many cases, the fearful suspicion, that there is, or is likely to be, a stone in the bladder. Dr. Heberden, in his Commentaries, says, " urine made of a deep coffee colour, or manifestly mixed with a large quantity of blood, has within my experience been very rarely the effect of any thing but a stone in the urinary passages. I therefore suppose a strong probability of this cause, when- ever I see this appearance." Again, blood may proceed from the kidne}', or from the bladder, in consequence of malignant fungous growths, to which those parts are liable : a disease which, though more surely fatal than the stone, is scarcely, to the unhappy subject of it, so appaUing. Hemorrhage may take place from the surface of the bladder from chronic disease, not cancerous, of that membrane. Mr. Howship has recorded an instance of this kind which occurred in Mr. Heaviside's practice. An old East Indian, who had long been subject to nephritic complaints, was suddenly seized with what was ihought to be retention of urine. A catheter was passed, but as no water flowed, it was supposed that it had not entered the bladder, in the situation of which there was a manifest tumour. The patient died the next day ; and the bladder was found distended by a very large coagulum of blood which had come from the diseased mu- cous membrane. There was no trace of hemorrhage in the kidneys, nor in the ureters. I hold in my hand a preparation showing disease of the prostate gland, which had been accompanied by hsematuria. HEMATURIA. 901 Now we judge of the exact seat of the hemorrhage, and of its cause, partly by the nature and appearance of the effused blood, and partly by the symptoms that precede or accompany the bleeding. Dr. Prout states that " when blood is derived from the kidney, it is in general equally diffused throughout the whole urine : on the contrary, when derived from the bladder, the blood for the most part comes away in greater or less quantity at the termination of the discharge, the urine having previously flowed off nearly pure." There are also certain modifications of the sensible qualities of the excreted blood, by means of which the same distinguished physician thinks he can pronounce, with considerable confidence, that the hemorrhage is owing to malignant disease. "The red particles of the blood (he says) discharged in the earlier stages of fungoid dis- ease, have often a remarkable appearance, and appear to the eye larger than natural; so that after they have subsided to the bottom of the urine, they at first sight some- what resemble grains of lithic acid gravel, and, like that substance, when the vessel is inchned, may be distinctly seen to roll along the bottom. From this peculiar ap- pearance of the red particles of the blood, the presence of malignant disease may be often suspected before the symptoms assume a decided character." .In a more ad- vanced stage of the disease, there is often a dark-coloured offensive bloody sanies in the urine, and more or less of mechanical impediment in passing it. I should con- ceive that the microscope might aid the diagnosis of such cases. There is one phenomenon which, whenever it occurs, is very characteristic of hemorrhage from the kidney, or the commencement of the ureter. I mean the ex- pulsion, with the urine, of slender cylindrical pieces of fibrin, which have evidently been moulded in the ureter, and subsequently washed down into the bladder by the descending urine. These little coagula are commonly of a whitish colour, the red particles of the blood having been removed ; and they look like slim maggots, or small worms. They denote, with much certainty, that the hemorrhage which they accompany is renal. Such, then, are some of the points of diagnosis furnished by the qualities of the excreted fluid itself. The bleeding may be presumed to come from the kidney, or from the upper part of the ureter, when it is accompanied or preceded by a sensation of heat, or of weight, or by some degree of pain, in the situation of the kidney ; especially if these uneasy feelings are confined to one side of the body. This presumption will of course be strengthened if calcuh have been known to descend from the kidney ; and converted into certainty if the patient suffers, together with the hasmaturia, a fit of the gravel ; and if there be no symptom of stone, or of disease, in the bladder. On the other hand, when no symptoms referable to the kil^ney or the ureter are present, while there are signs of stone, or of disease of the bladder, or of a diseased prostate- — a mixture of mucus with the blood ; occasional retention, or a sudden stop in the stream of urine ; pain referred to the glans penis immediately after the bladder is emptied — then we conclude that the blood proceeds originally from thai receptacle. When pure blood comes away, either guttatim, or in a stream, unmixed with urine, and neither preceded nor accompanied by any desire to make water, it is probable that the itrefhra is the locus of the hemorrhage. Bleeding from the surface of the urethra doubtless niay, and commonly does, pro- ceed from some mechanical injury done to that channel: as in the passage outwards of a fragment of stone, or inwards of a surgical instrument. But it is probable that blood is sometimes exhaled from the same membrane in considerable quantity, under circumstances which favour or produce a strong determination of blood to the genual organs. A young man came to the Middlesex Hospital with hemorrhage from the urethra, and said that he had lost a considerable quantity of blood in this way, within a few hours. The hemorrhage appeared to have been the consequence of excessive indulgence in sexual intercourse. His own account of the matter was that he had passed the night with a female, in whom the monthly period had jusi returned ; and he ignorantly fancied that the hemorrhage from his own person wti3 the result of a sort of contagion. However, the bleeding was permanently arrestee! 4a 902 HEMATURIA. by the introduction of a bougie, which was allowed to remain for a short time in the urethra. This was the solitarj^ instance to which I alhided just now, of (perhaps) idiopathic hemorrhage, occurring within my own knowledge. When the hemor rhage comes originally from the urethra, the blood may regurgitate into the bladder, and coagulate there ; and mislead an observer into the belief that the hemorrhage was vesical. It appears, then, that, in many instances, certain local symptoms are associated with hcematuria, and point distinctlj^ to the part of the urinary apparatus whence the blood proceeds. But many cases are very obscure. Blood sometimes appears, mixed in greater or less quantity with the urine, when there is no pain, nor any other sign which would lead us to fix upon one part rather than another as the source of the hemorrhage. Now I believe that hasmaturia, bearing this indeterminate character, will generally turn out to be rcnuJ, and to depend upon earthy concretions in the kidney. It is true that the hemorrhage which results from cancerous disorganization, whether of the kidneys or of the bladder, may also be painless. But cancerous disease of these organs (unless it extends from parts in the neighbourhood, as from the rectum, or from the uterus, to the bladder) is very rare ; and when it does occur, the nature of the case ma]' usually be ascertained from those peculiar qualities of the effused blood which I have mentioned as being characteristic of malignant growths. A calculus can seldom remain long in tjie bladder, at any rate will seldom cause bloody urine, without giving some other notice of its presence there : but concretions form in the kidney, sometimes in great numbers, and reach a considerable size, and remain there long, without furnishing any signal from which we might suspect their existence ; except (perhaps) the occurrence of hcematuria. We know this, because calculi are frequently met with in the kidneys of persons Avho had never suffered anA' pain or obvious derangement of the urinary organs during life ; and because, in other persons, in whom such calculi pass down from the kidney towards the bladder, the first notice of their existence is often given by the acute suffering they inflict during their transit through the narrow ureter. Yet though calculi may lodge in the infundibula, or in the pelvis of the kidney, without manifesting their presence by exciting pain, it is very conceivable that, by progressive enlargement, they may lay open, or by accidental change of position they may wound, some of the smaller blood-vessels of the part, and so give rise to painless hfematuria. It will strengthen the presumption that such is the source of the bleeding, if it has succeeded (as hemorrhage from the urinary passages often does succeed) to a fall ; a shock, or jar of the body ; or jolting on horseback or in a carriage. Similar movements may occasion bloody urine when there is stone in the bladder; but then the irritation will he felt in that sensible part; the hfematuria will not be painless ; the bleeding will not be the only symptom. It is, then, I say, my belief that very many of the obscure cases of hfematuria may be referred to renal calcuU : and if this view of the subject be correct, it will render it probable that the alleged instances of. idiopathic hemorrhage from the kidneys oucfht thereby to be reduced in number. The expulsion of the blood in hcematuria, whether it be painful or not, is sometimes attended with severe rigors. I mentioned before, that, in some persons, almost any irritation of the urethra, the passing a bougie, for example, will bring on a shivering fit. I had some time ago a patient under my care in the hospital, who had hsema- turia of an obscure kind, and the discharge of blood was always marked by a smart rigor. Dr. Prout speaks of an instance of obstinate hsematuria in which a shaking fit constantly preceded hemorrhage. Dr. EUiotson, too, in one of his lectures, gives •^n account of a case of intermittent hasmaturia. The patient was under his care m St. Thomas's Hospital, and had formerly had the Walcheren fever. He was admitted for ague, and every time that the cold stage of his attack came on, he voided a quantity of pure blood from the urethra. He was cured, by quina, both of his ague and of his hemorrhage. If we may trust to the records of physic, instances of periodic hsematuria are not oncommor. HEMATURIA. 003 One circumstance yet remains, worth noticing, in respect to htematuria ; and it depends upon tlie hemorrhage itself rather than upon the disease of which the bleed- ing is a sign. I allude to the coagulation of the effused blood in the bladder, how- ever it may have got there. This circumstance is sometimes the source of much inconvenience, and suffering, and even of danger, to the patient. It may cause reten- tion of the urine and all its evil consequences ; and a still worse event is, that the coagulum sometimes supplies a nucleus, around which calculous matter is deposited, and thus lays the foundation of that horrible malady, " the stone." You will perceive, from what I have said, that the /rca/??te/i/ of hcematuria resolves itself, in most cases, into the treatment of the disorder, or bodily condition with which the hemorrhage is associated, and of which it is merely a symptom. Sometimes, however, the bleeding itself is so profuse, or so long-continued, as to require direct efforts on our part towards its restraint. " When (says Dr. Prout) the bladder becomes distended with blood, and complete retention of urine in consequence takes place, recourse must be had to a large-eyed catheter, and an exhausting syringe, by the aid of which, and the occasional injection of cold water, the coagula may be broken down and removed. If the hemorrhage be so profuse that the bladder becomes again distended with blood in a very short time, the injection of cold water into the rectum or bladder is sometimes of great use; and should these means fail, from twenty to forty grains of alum may be dissolved in each pint of water injected into the bladder; a remedy that seldom fails to check the bleeding, even when the cause is malignant disease. I have never known any unpleasant consequences follow the use of this expedient, and have seen it imme- diately arrest the most formidable hemorrhage, when all other means had failed ; and when the bladder had repeatedly become distended with blood, almost imme- diately after its removal." Among remedies given by the mouth, the same physician thinks highly of the acetate of lead. I have mentioned before, in these lectures, a nostrum called, after the name of its inventor, Rnspini's styptic. This has often been known to put a stop to hemorrhage which had resisted other remedies. I will read you one example of this from Sir Benjamin Brodie's published lectures. Speaking of hfematuria, dependent upon disease of the prostate gland, he says : " Those medicines which operate as styptics when taken internally, and which are useful in cases of hemor- rhage from the lungs, are also useful in hemorrhage from the prostate. I had a patient with very diseased prostate. A frightful hemorrhage took place. The usual methods of treatment were adopted, but were of no avail. The skin became pale, the pulse became weak, and the patient was exhausted ; yet the bleeding continued. Large quantities of blood were drawn off with the catheter : nevertheless the bladder continued to become more and more distended with blood, and was felt prominent in the belly as high as the navel. All other remedies having failed, I gave the patient a dose of the nostrum known by the name of Ruspini's styptic, and repeated the dose two or three times in the course of the next twelve hours. In about half-an-hour after the iirst dose was taken the hemorrhage ceased ; and it never returned. The patient lived a year and a half afterwards, and there was no reason to beheve that any ultimate harm arose from the bleeding." For a long while this nostrum seems to have baffled analysis. The late Dr. Maton told me that Dr. Wollaston had examined it, and had arrived at the negative conclusion, that it contained no metallic substance. Dr. A. T. Thomson has since announced that it mainly consists of a solution of gallic acid in alcohol diluted with rose-water. There is no substance more highly spoken of as a remedy for internal hemorrhage^ by foreigners, and especially by the French, than the extract of Rhatany root, the Krameria of our Pharmacopffiia. A female was sent to me by my colleague, Mr. Arnolt, complaining that for some weeks she had been passing bloody urine. She had gone through the ordinary routine of treatment without benefit. There were no symptoms present which threw any light on the precise source or cause of the hemorrhage. I recommended a trial of the rhatany, and she began to take a scrupi*:' of the extract, mixed with water, three times a day. As in Sir Benjamin Brodie's 904 ABDOMINAL TUMOURS. case, the hfematuria ceased after the first dose, and it did not return for many months. I mention this instance the rather, because the gallic acid enters into the composition of this vegetable extract also. Now the gallic acid is one of those substances which, when introduced from the digestive organs into the blood, passes through the round of the circulation unchanged, and reappears in the urine. We may conceive, therefore, that it stays internal hemor- rhage by exciting its astringent property upon the ultimate capillary blood-vessels in its passage through them. It certainly is applied, in solution, after its elimination from the blood, to the urinary passages : and thus, in hsematuria, it may be presumed to produce its styptic effect upon the bleeding surface. To the same principle are owing, I believe, the astringent and styptic virtues of the uva ursi, bistort, tormentil, the pomegranate, kino, catechu, and the several pre- parations of gall nuts. I am sorry that I have not had much opportunity of trying ihe gallic acid itself, in its separate state ; for I have neard of several instances of its successful employment in cases of internal hemorrhage. If, as I beheve, it really has this power, it is very desirable that it should be prescribed in a more definite and precise manner than is afforded by its natural combinations with so many different vegetable matters. I am unwilling to take leave of the cavity of the abdomen, without saying a few words (very iew they must be) respecting the various kinds of tumour to which it is obnoxious. It may seem strange that the diagnosis of abdominal tumours, which manifest themselves to the touch, and to the sight, should be so difficult and puzzling as it often is. I mentioned some reasons for this before : the loose and shifting man- ner in which some of the viscera of the belly are packed and fastened ; their fiabilitj'- to enlarge beyond their natural limits ; their accidental dislocations under disease. It would be vain to attempt even a sketch of the infinite variety of these deviations from the healthy state. Every case of abdominal tumour forms a separate object of study, and must be judged of by its proper circumstances. All that I can profess to do, is to offer you some rough hints on this interesting subject. Some kinds of tumour result from morbid growths; such are all the varieties of cancer: some from the presence and multiphcation of parasites ; of which we have examples in collections of hydatids : some are produced by the distension of hollow organs ; as when concretions, or fecal matters, or gases, lodge in the intestines ; or when urine accumulates and is pent up in the bladder: some consist in the mere enlargement of parts. Let us enumerate the principal of these ; that you may know what chiefly to expect. 1. There are, I say, tumours from lodgments in the bowels _: and these are more hopeful than most kinds of abdominal tumours. Sometimes the stomach, or some part of the intestinal canal, is distended in consequence of a mechanical impediment to the course of its contents : and this impediment may be invincible. 2. Ovarian tumours are very common. Of these I spoke at some length in a former lecture. 3. The liver is very liable to enlargement : either from simple congestion of blood; or from the interstitial deposit of adipose matter; or from the intrusion of malignant growths ; or from colonies of hydatids. 4. So also the spleen swells, from fullness of blood, or from specific deposits in us substance. 5. The kidneys sometimes attain a art, especially in the advanced stage of the disorder, upon debility or paralysis of the sphincter muscles. The urine also dribbles away frequently: and these are points which must always be looked after; first, for the sake of keeping the patient as clean and dry as possible, the irritation of the urine and fecal matters tending to produce sloughing ulceration; and, secondly, with the view of preventing the bladder from becoming unduly distended. Reten- tion of urine, and all its bad consequences, may otherwise occur. It is a good general rule, therefore, to examine the hypogastric region every day with the hand ; and also to ask to see the urine, not for any purposes of prognosis, but to ascertain that it is regularly discharged. ^ -■ It is also, I repeat, in this stage of the disorder that the rash or eruption, which so often accompanies it, very frequently shows itself. Sometimes it is noticed earlier. It consists of small rosy blotches, of a roundish or lenticular shape ; scarcely raised, if raised at all, above the general surface of the skin on which they appear. Ohomel states that they vanish under pressure ; but it is not so. I have again and again ob- served that they diminish or become fainter under the pressure of the finger ; but they are not effaced even for an instant. They are sometimes few ; sometimes so numerous as to dapple the whole surface of the abdomen, or of the thorax, or of both. Upon the limbs they are less common, and less closely set. I believe that they often besprinkle the back, although they are seldom looked for there. They vary in intensity of colour, and, therefore, in distinctness. The whiter the skin, the mofH 940 CONTINUED FEVER. obvious do the spots become. In brunettes they may easily escape notice. In this form of disease the entire skin is often unnaturally duskjr, • The eruption does not come out all at once : nor is its duration always the same. Sometimes it disappears entirely after two or three days. Sometimes, on the other liand, it lasts a fortnight, or more. In the latter case it is probable that successive crops of the spots continue to arise. The rash now described stamps continued fever with one of the most striking characters of the exanlhematous group of febrile diseases : but it certainly is less constant than the cutaneous phenomena of small-pox, measles, or scarlet fever. It occurs much more regularly in some epidemics than in others. Fever is very rife in St. Giles's, and in other crowded parts of this town, just now (1838). Our wards at the Middlesex are full of it; and scarcely a case presents itself without these spots. We speak of it familiarly as the spotted fever ; or, (from the resemblance which the rash bears to that of measles, hereafter to be described) as the rubeoloid fever. You cannot well confound this mottled rash with petechise, which are little specks, or dark circular spots, resulting from a minute extravasation of blood beneath the cuticle. The specific rash and these petechiae are, however, sometimes mingled together. It may not be superfluous to caution you against mistaking Jlea-hites, which are common to nearly all our hospital patients, for this specific eruption, which is pecu- liar to the fever patients. The round red stain, with a dark point for its centre, sufficiently distinguishes the mark of the insect from the rose-coloured blotches of the disease- There is another eruption described by the French as occurring in this disease without being peculiar to it. In this country it is now very rare ; but it used, whea the hot plan of treatment was in vogue, to be very common indeed here, in various febrile complaints ; and it was, and is, occasioned by profuse sweating. Sudariiina, the vesicles composing the eruption are called. They are small, hemispherical, transparent elevations of the cuticle, containing a clear watery fluid. The vesicles are frdm a quarter of a line to half a Hne in diameter ; they have no red bases ; and they are so perfectly pellucid, that when you look upon them in a direction perpen- dicular to the skin on which they stand, they may readily elude observation. Viewed sideways, they present bright surfaces, and look like so many drops of w^ater, and you may feel with your hand that they roughen that part affected with them. These sudamina are mostly met with on the thorax, along the sides of the neck, and about the axillee. By degrees, the limpid fluid disappears, and they shrivel up ; the cuticle becomes wrinkled, and dries into a whitish powder. Diurrhcca is another marked symptom observed in many cases of continued fever, though not in all, at this period of the disease. When the stools are involuntary, when they are passed in bed without notice on the part of the patient, they add ma- terially to his danger, by the irritation and the sores, which are liable to result from their contact with the skin. There is seldom much pain of the abdomen complained of by the patient ; but if you make pressure, especially about the situation of the cscum, you may often remark that he winces, or that a transient expression of suf- fering passes across his features. The character of the evacuation remains the same, and is almost distinctive of the disease : thin, yellowish, ochrey, like pea-soup. When in fever, such stools persist day after day, and several of them every day, you may safely infer that there is ulceration of the bowels, although there should be no pain complained of, even when the abdomen is pressed. And the same conclusion will become still more certain when hemorrhage from the bowels occurs, as it is apt to do, in this stage of the fever. It often takes place unexpectedly, sometimes in considerable quantities, and rapidly exhausts the patient: or it recurs at intervals to a smaller amount, wasting his strength as efl^ectually, thougn more slowly. The bleeding is probably owing, in general, to the division or opening of some of the mesenteric veins, by the ulcerating process which I shall more fully describe by and by. This is not, however, a necessary consequence of the ulceration ; for the vessels are usually obliterated previously to their erosion. Boraetimes blood may be thus poured into the bowel without being voided. Andral SYMPTOMS. 941 relates a case in which a raan died suddenly, and unexpectedly, at an advanced period of continued fever. Large clots of black blood filled the lower two-thirds of the small intestines, which were crowded with patches of ulceration. No part of the blood had passed the valve of the csecum. Hemorrhage from the bowels occurs also in continued fever sometimes in another way ; in connection with other putrid symptoms, as they are not unaptly called : petechicB, purple spots, bruise-like blotches, and extreme depression of the vital powers. In these cases the hemorrhage is strictly of the passive kind, and it is a symptom of the worst omen. Like those effusions of blood from the same parts that happen in scurvy and purpura, it depends upon a morbid condition of the blood. This is no matter of speculation, for by this time the sensible qualities of the blood are manifestly changed : its natural tendency to coagulate when withdrawn from the body is diminished, the crassamentum is large and loose, and fills the cup, and some- times is rather an incoherent sediment than a clot. When these putrid symptoms are strongly marked, a pecuhar fetor is exhaled by the patient's body ; his tongue becomes dry, black, and fissured ; his teeth are covered with dark sordes ; sloughs form from the mere pressure of the bed on which he lies ; in extreme cases the toes have mortified ; and Dr. Roupell relates one terrible instance in which both legs rot- ted away to the bones, which it became necessary to saw through : yet this patient recovered. Death may take place in this, the second period of continued fever. Of forty-two patients who died under his care, Chomel counted nine in which the fatal event occurred between the eighth and the fifteenth days. The phenomena belonging to the third period of the fever vary considerably according as the disease is about to terminate in death, or in recovery. Among Chomel's forty-two fatal cases, I have already mentioned that one death took place in the first week, and nine in the second ; the remaining thirty-two all occurred in the third period. And the tendency of the fever to terminate during this period is equally well-marked in the cases which recovered. Of twenty-four such patients one alone began to be convalescent in the first week ; and of those whose symptoms were at all serious, not one showed marks of convalescence before the end of the second. When the disorder is about to end favourably, the more formidable of the symp- toms diminish and abate. The patient begins again to attend to questions that are put to him ; the air of stupor which had hung over his countenance clears away ; he once more shows an interest in what is going on around him ; the temperature of his skin becomes more natural, the tongue moist and cleaner at its edges, and the frequency of the pulse is Jess. The evacuations from the bowels are less numerous, more consistent, and more healthy ; and the patient is aware when the necessity for passing them arrives, and he gives notice, or asks for assistance. Generally, at the same time with these tokens of improvement, the emaciation which has taken place becomes remarkably conspicuous ; perhaps it is the more observable on account of the patient's resuming a more natural expression of countenance. In many instances, the amendment is so gradual that we can scarcely say when it begins. In other cases the favourable crisis is preceded by an aggravation of most of the former symptoms, and a marked increase of the general distress. This is a very curious circumstance ; and it did not escape the notice of our great dra- matist. Before the curing of a strong disease, Even in the instant of repair and health, The fit is strongest. Evils that take leave, In their departure most of all show evil. Certain evacuations are also sometimes observed to accompany or to be connected with the favourable change ; and the most common of those is the evacuation of sweating. On the other hand, when the disease is about to terminate in death, that event may take place in different ways ; in either of those modes, in short, which I took some pains to distinguish in the earlier part of this course of lectures. I told you then thai 4d3 942 CONTINUED FEVER. I had been taught the importance of studying the tendency to this or that mode of dying, in reference especially to fever, by Dr. Alison. My own experience has since sufficiently approved to me the wisdom of his teaching. CuUen inculcates the necessity of "obviating the tendency to death." To do so, we must ascertain the direction of that tendenx:y. We do not so much cure these exanthematous maladies, as keep our patients alive while they recover. If we would prevent their dying we must know in what manner they are in danger of dying. The most common mode of death in continued fever is certainly that of coma. The organic life survives the animal life. The muttering, half-conscious, dream-like stupor, from which the patient may be roused for a while, becomes, by degrees, more profound, and death begins in the head. This mode of death, occurring in the second or third week of the fever, is associated, frequently, with the symptoms of putrescency already described. But as the stupor deepens, the pulse generally grows weak, and the extremities become cold. So that death does not come purely in the way of coma ; but we have a compound of coma and asthenia, in which the coma takes the lead. Now coma may result from at least two different kinds of cause. One cause is pressure, which is mechanical. Another, which is probably chemical, is the circu- lation of some noxious or narcotic substance (such as opium) in the blood. And there are, doubtless, many physical conditions of the nervous mass itself which are capable of arresting the cerebral functions, and producing coma. To which kind of cause are we to ascribe the stupor that supervenes during the progress of fever ? That is an interesting, and in reference to practice, an important, question. Physicians have diligently attempted its solution, by examining the dead brain. I cannot tell you how often I have looked, and looked in vain, for some palpable dis- organization, or some effusion implying pressure. All who are familiar with the dead-house of a hospital are aware that this fruitless search for some physical expla- nation of the comatose state, after death by fever, is of very common occurrence. Chomel — one of the latest, and a very able and accurate French writer on fever — gives the following statement in respect to 38 fatal cases, in which the brain was carefully and minutely inspected by him. In 15 of the 38, no morbid appearance at all was perceptible : in 13 there was some serous fluid, from a teaspoonful to a tablespoonful, in the ventricles : in 7 there was what he calls (edema of the meninges, effusion, that is, in the meshes of the pia mater : in 6 general but slight diminution of consistence : in 2 some alteration of density : in 5 a speckled appearance of the cerebral substance. Now to what conclusion do these facts lead us ? Why, in the first place, to the conclusion that those pathologists are in error who maintain (as Dr. Clutterbuck does, for whose experience and talents I entertain a sincere respect,) that the essence of continued fever is inflammation of the brain. Not only do we fail to discover, in many instances, any traces of inflammation, upon inspecting the dead brain, but we find that, during the life of the patient, measures which would be likely to aggravate any inflammatory mischief — strong stimulants, for example, wine or brandy, — do actually and obviously, in cases innumerable, relieve the comatose symptoms, and benefit the patient. The inference seems unavoidable, that the coma, in such cases, has some other cause than that mechanical pressure which arises sometimes from the effusion of fluid upon the surface of the brain, or within its ven tricles ; and that other cause is supplied by the poisoned blood. Here again we may adopt the pathology of Shakspeare : — The life of all his blood Is touched corruptibly : and his pure brain (Which some suppose the soul's frail dwelling-house) Doth by the idle comments that it makes Foretel the ending of mortality. In some malign epidemics the nervous system is overwhelmed at once, in the very outset, by the force of the poison. The patient becomes stupid or bewildered ; his surface is cold, clammy, purplish, and his pulse feeble : the coma rapidly augments, and deatn may ensue within twenty-four hours. We sometimes see this fearful train of symptoms in small-pox ; and still more often and more strikingly in the I MORBID APPEARANCES. 943 worst forms of scarlet fever. I believe that in these cases, there is no deviation, cog- nizable by our senses, from the healthy texture and appearance of the parts within the skull. Nevertheless, there maybe, and there often is, in these fevers, actual inflammation of the brain or its membranes : but this is an incidental complication. We conjec- ture that, in addition to the influence of the poison upon the nervous system, there may be a low degree of inflammation going on within the head, when we find it externally hot, when the patient has flushed cheeks, and a vascular eye, and com- plains of dull headache. And there are some instances in which we recognize more distinctly the outward signs of encephalitis — severe pain in the head, high and fierce delirium, intolerance of light and of sound, with much heat of skin, and a hard pulse. When coma succeeds such symptoms as these, we naturally ascribe it, in part at least, to the effects of the inflammation : and rightly, for we find traces of inflamma- tion after death ; serous effusion beneath the arachnoid and in the cerebral ventri- cles ; shreds of coagulable lymph ; and more rarely suppuration. T suspect that genuine encephalitis, which is, of course, attended Avith pyrexia, is sometimes mis- taken for continued fever with intercurrent inflammation of the brain. Great atten- tion, and some skill and judgment, are required for discriminating those cases of fever in which such inflammation occurs, and for directing the appropriate treatment. The death in fever by apncea is certainly much rarer than that by coma : yet it is not very unfrequent. It often mingles itself with the death by coma. From the earhest period of the fever we may, in most cases, notice some increased quickness of respiration, which is not entirely owing to the mere fever, or to acceleration of the circulation ; for the ear, when applied to the parietes of the chest, discovers rhon- chus, and sibilus, at least. Frequently there is considerable dyspnoea for some hours, or for a day or two, before death : and this may be apparent only, in conse- quence of the stupor ; or it may be real, and proceeding from a low degree of pneu- monia, which, by interfering with the due arteriahzation of the blood, may aggravate, or even give rise to the coma : and such pneumonia is apt to be masked by the fever; declaring itself by none of the ordinary symptoms of cough, rust-coloured sputa, or pain in the thorax. The inflammation, thus latent, is discoverable, how- ever, by the sense of hearing. Now what does dissection teach us with respect to the condition of the lungs after death from continued fever 1 Why, the most common unnatural appearance met with in the pulmonary substance is engorgement : a state similar to that which oc- curs in the first stage of pneumonia. But here the engorgement is probably in a great measure mechanical, and takes place during the last few days of the patient's life. As the vital powers diminish, the laws which govern the physical world re- sume their empire. The fluids, and the blood especially, accumulate in the most depending parts of the viscera ; and the lower and posterior portions of the lungs in particular become loaded. But besides this, it is not unusual to find large portions of the lungs in a state of hepatization, and even infiltrated with pus : and the bronchial tubes clogged up by viscid and frothy mucus. The mode of death by asthenia or syncope is not very common as existing by itself; but it is often combined with one or both of the two other modes. In some cases of fever, however, death does appear to take place from mere debility of the heart; there having been no pulmonary embarrassment, and the head having remained clear. Death, in such cases, is preceded by those symptoms of debiHty which have been already described. The pulse becomes small and weak, and hke a thread ; the patient lies on his back, and sinks down in the bed ; the features sharpen ; the eyes are hollow and dim, as though glazed ; the sphincter muscles fail to contract ; the extremities grow cold ; cold sweats appear on different parts of the body : and at length the heart ceases to beat and the patient to exist. Death occurring in this manner does not occur early. It happens at an advanced period of the disease. It is noticed sometimes in persons who have been largely bled, or too actively depleted at the commencement of the fever: and in those who have suffered a good deal from diarrhoea. In short, as the two previous modes of ieath are connected, often, with morbid conditions of the head and chest respectively, 944 CONTINUED FEVER. so death in fever occurring purely or chiefly by asthenia, connects itself with morbid conditions existing within the belly. And we trace the vestiges of disease much oftener in the abdomen than either in the brain or in the thorax ; and the mischief which we there discover is more con- stant and definite than elsewhere. It is proper, therefore, to inquire somewhat more closely into the morbid appearances observed in the abdomens of those who die of continued fever. I need scarcely remind you that the intestinal canal is largely furnished, on its inner surface, with glands, or follicles, which consist of little more than crypts, and of which the precise office has not yet, I think, been accurately determined. Some of these glands are sprinkled (one may almost say at random) over the whole tract of mucous surface. These are accordingly called solitary ghtnds. Till I was better instructed by Professor Todd, I used to speak of them as being the glands of Brunner ; whereas the glands discovered and described bj^ that anatomist are limited to the duodenum. Other glands or folhcles are collected into groups, and are named glan- didx agminatse, or often the glands of Peyer, who has given a capital description of them. Now the arrangement of these glands of Peyer is peculiar : and, in refer- ence to the morbid anatomy of continued fever, very necessary to be known. They are met with in the ileum alone : they are, mostly, oblong in form : and they occupy that part of the bowel which is opposite its mesmeric attachment. They are largest, and most numerous, and consequently most thickly set, in the lower end of the ileum, which, in some instances, is almost entirely covered with them ; they are found also upon the ileo-csecal valve ; but beyond that they do not go in that direction. Ascend- ing from the cascum towards the jejunum, these groups or patches become smaller, shorter, more circular, and less numerous ; they are separated by longer and longer intervals, till at last they cease to be visible at all. Where there are valvuke conni- ventes, there the situation of these patches is very obvious ; for the valvulae conni- ventes are interrupted, and never run across them. This fact has sometimes led to curious mistakes. I have seen in the museum of the College of Surgeons a prepa- ration put up by Mr. John Hunter (but not labeled, I presume, by him), professing to be an example of the destruction of portions of the valvulte conniventes by ulcera- tion. It is nothing more than one of these natural patches, rather more plainly de- veloped than usual. These glands, in their healthy state, are much more conspicuous in some bodies than in others. Yoii may see, if you look at them attentively, that they are made up of a congeries of mucous folhcles, of which the orifices are obsourely apparent. Now the main alterations met with in the abdomen after death, in continued fever, are alterations of these very glands : of the solitary glands, to wit ; and still more con- stantly and remarkably of the agminate glands. The changes which these glands undergo are of the following kind. In the first place they become enlarged, and more perceptible than they are in the natural state. They then present a grayish transparent surface, dotted over with black points ; which black points mark, I conceive, the excretory mouths of the several follicles. Then, as the inflammation, for such it is, advances, the patch becomes reddish per- haps ; and the follicles burst or ulcerate, or slough away : not altogether, but partially and by piecemeal ; so that an irregular ragged ulcer is generally left, having thicken- ed edges. Sometimes, however, the follicles disappear without there being much redness or thickening: the mucous membrane immediately adjacent, and even the '•emaining part of the patch of folhcles, being pale, and level. Sometimes the patch pufls up into a sort of fungous swelling, in which all trace of the follicular structure Is lost. The colour of the ulcerated surface is various, as well as its form and ap- pearance. Sometimes it is pale and grey ; sometimes red ; oftentimes yellow, as if the exposed cellular and other tissues were stained by the ochrey fluid which had been poured from the bowels during hfe. What I have hitherto stated relates to Peyer's glands ; but the sohtary glands participate, usually, in the change. They become, in the first place, large and hard, and present a whitish-coloured projection from the surface, which, by a mistaken analogy, has sometimes been called a pustule. MORBID APPEARANCES. 945 At length a loss of substance takes place in these also ; beginning at their summit, and producing a small, but sometimes a deep ulcer. And of these changes it is further to be observed, that they are more common, more numerous, more extensive, more advanced, in proportion as we approach the caecum. It is natural that we should meet with more ulcers near the cascal valve, because there are more glands there; but undoubtedly the ulcers are (in general) further advanced there than higher up in the bowel. Going along with this ulceration of the mucous glands of the intestines, and above all of the aggregate glands of the ileum, you will frequently find inflammation (j, e., redness, hardness, and swelling) of the corresponding mesenteric glands. This would seem to be a consequence of the inflammation and ulceration of the mucous glands. The inflammation of the mesenteric gland is, I conceive, secondary ; and bears the same relation to the ulcers seen in the bowel, as a bubo in the groin bears to a chancre on the glans penis. These alterations are extremely interesting, because they aflx)rd a plausible ex- planation of many of the symptoms of continued fever. They account for the diarrhoea ; they account for one form of occasional hemorrhage from the bowels ; they account for the uneasiness of pain which is experienced when the abdomen is pressed, and teach us why that uneasiness is greatest in the situation of the caecum. Nay, we can even understand why, although these ulcerations exist, there may be no pain occasioned by them. This may be partly owing to the general insensibility to impressions and sensations of all kinds, produced by the stupor; but partly, also, it probably depends upon the depth to which the ulceration goes. The mucous tissues are possessed of but little sensibility even under inflammation ; but if the muscular and peritoneal coats become involved in the inflammatory process, then pain begins to be felt. I remember, a few years ago, attending a young lady ill of fever, with a very well-informed practitioner, but one of the old school, for he had not turned his attention much to the state of the intestines in that disease. One day we learned that our patient had had hemorrhage ; from the uterus her friends supposed; but when I saw the discharge, I was certain, by its appearance, and by its odour, though it was not mixed with any feces, that it had come from the bowels ; and I stated my conviction that there was ulceration in the lower portion of the ileum. But she had no pain in the abdomen. You might press any part of it without exciting the smallest uneasiness. So, distrustful of my opinion, they called in an eminent accoucheur, who also pressed and examined the belly : but neither could he detect any tenderness or undue sensibility. He next examined the uterus per vaginam ; but could discover nothing wrong there. Some few nights afterwards the general practitioner was called out of his bed to this patient. He was told that the hemor- rhage (or flooding as they called it, for they persisted in believing that it was uterine,) had returned ; and before he arrived at the house the patient was dead. We next day opened the body together. The uterus was perfectly natural ; there was no vestige of discharge or bleeding in the vagina; but the ileum, for about a foot above its entrance into the caecum, was in a state of superficial but ragged ulceration, and universally red and smeared with blood. I mention this as a strong fact in illustra- tion of the possibility of there being much disorganization of the inner surface of the intestines, without any pain to reveal it. Now the alterations I have last been sketching — the thickening, redness, tumefac- tion, and ulceration or sloughing of the glands of Peyer, and also of the solitar}'- glands — are so common in fever, particularly in some epidemics, that many patholo- gists are of opinion that fever is essentially inflammation of these glands, and nothino- else. But this, I am sure, is an error. In the first place, if this doctrine were true, it would almost follow of necessity that the severity of the case, and the intensity of the symptoms, should be in proportion to the number, depth, and extent of the ulcerations. But this is far from being so. In cases in which the symptoms have :)een of the worst kind, there have been found very ievf ulcerations, and those small and apparently insignificant. On the other hand, when the complaint has run a moderate course, but at length has terminated fatally, it is not uncommon to discovei a frightful amount of disorganization in the ileum. 60 9-16 CONTINUED FEVER. But what is more conclusive is, that the occurrence of this inflammatory condition of the mucous follicles of the intestines is not constant, in continued fever. If one well-marked instance of the disease should occur, without any trace of a morbid action having been going on in the mucous follicles, that instance would, of course, suffice to overturn the theory. But scores of such cases have occurred. I have seen many such myself; and other persons have seen more. Since attention has been drawn to the subject, the patches of glands, and the whole tract of mucous mem- brane, from the stomach to the rectum, have been diligently explored : and the result seems to be that, at certain times and places (in other words, in certain epidemics) the ulceration of the inner surface of the intestines is far less common than at others. It was comparatively rare in an epidemic of which I witnessed some part in Edin- burgh. Then I came to London ; and for several years I never saw a body opened after death by continued fever, without finding ulcers in the bowels. More recently, however, and especially during the present epidemic (1S38), I have looked for them, carefully, in many cases that have proved fatal in the Middlesex Hospital, and have discovered neither ulceration nor any other apparent change in the folhcles of the intestines. Still, in my own experience, such ulcers have been vastly more often present than absent. Chomel, during five years' investigation of this matter in the Hotel Dieu, never met with an exception to the general rule of their occurrence ; or of some degree or form of that kind of alteration in the mucous glands, of which the ulcer is the last stage. We must conclude, upon the whole, that although an inflammatory state of the solitary and aggregate glands, which strew the surface of the mucous membrane of the alimentary canal, is not the essence of fever, yet that it is a very frequent com- panion of continued fever. But when it does occur, is this state of things always, or necessarily fatal ? By no means. It may be fatal, in more ways than one. It may lead to death, by ex- hausting diarrhnea, in the way of slow asthenia ; it may kill by laying open a large mesenteric blood-vessel, and so producing copious hemorrhage and mortal syncope ; it may, and often does, destroy the patient, by perforation of the bowel; the ulcer penetrates the mucous and muscular coats, and reaches the peritoneum : and some- times that membrane gives way, and sometimes it does not. The consequence of iis rupture or perforation — the escape, I mean, of the contents of the bowel, and the supervention of intense and uncontrollable peritonitis — I need not again dwell upon. But the ulcers may, and doubtless often do, heal : and the scars which they leave behind them are frequently to be seen. The ulcerated surface seems to clothe itself afresh, by degrees, with a new mucous membrane ; which is thin, however, and adherent to the subjacent tissues, and does not sHde over them when pressed between the finger and thumb, as the healthy portions of the coats of the bowel will do upon each other. And in the place of the cicatrix there is usually to be seen a manifest puckering, and a number of little wrinkles or lines, radiating from a common centre. The spleen — I may observe, before I conclude this lecture — is more frequendy found altered in texture after death by continued fever, than any other part except the glands of which I was last speaking. It is usually enlarged, of a dark colour, and "of soft, and sometimes almost rotten, consistence. To-morrow I shall endeavour to point out some of the most important varieties that have been found to occur in this disease of continued fever. LECTURE LXXXV. Varieties of Continued Fever. Its Causes. Exciting and Predisposing. Pro- phylaxis. Having traced, in the last lecture, as clear an oudine as I could, of the ordinary course and the diflerent terminations of continued fever, I wish to touch, briefly, to- day on some of its principal varieties ; and then to inquire into its causes. CONTINUED FEVER. 947 Although fever is, as I have stated, a specific disease, it assumes divers forms ; atid so dissimilar are some of its phases that they might seem to belong to totally different maladies. These variations relate not only to individual cases, but to whole epidemics. In some places and seasons, the inflammatory type predominates, marked by excitement of the sanguiferous system ; in others, depression of the nervous system, characteristic of the typhoid type, is the prominent feature of the disease. Most generally of all, the disorder commences with inflammatory fever, and ends with typhoid symptoms. The distinctions drawn by Cullen, now well nigh obsolete, were founded in nature. To the inflammatory form he gives the name of synocha, which he thus defines: "Calor plurimum auctus ; pulsus frequens, vahdus, et durus; urina rubra ; sensorii functiones parum turbatse." With this he contrasts his typhus. "Calor parum auctus; pulsus parvus, debilis, plerumque frequens; urina parum mutata ; sensorii functiones plurimum turbatEe ; vires multum imminutte." These forms I would have you bear in mind : not that you are likely to meet with many instances of pure synocha, nor of pure typhus, but because they furnish standards of comparison, towards which, in opposite directions, the fevers of different epide- mics approach. The most usual variety of continued fever is represented by the synochus of the same author, which is a compound of the two others. "Febris ex synocha et typho composita : initio synocha, progressu et versus finem typhus." The unsoundness of many of Cullen's theories, and the conceit of later and far in- ferior writers, have thrown his First Lines into undeserved neglect ; but his clear, succinct, and faithful pictures of disease, will not easily be surpassed, and are worthy of your attentive study. The difference is very striking between the kind of fever that I witnessed in Lon- don for ten years before the arrival of the spasmodic cholera in this country, and the kind of fever that has since prevailed, and is now (1838) so rife around us. During the first of these periods, the antiphlogistic regimen was indispensable in the outset of the disease; in most instances, bleeding, either general or topical, was required, and well borne ; there was no eruption to be seen upon the skin ; the glands of Peyer, according to my own experience of the fatal cases, were almost invariably affected ; and the mortality was very moderate. This was an inflammatory phase. The present epidemic offers a marked contrast in all these points. A large per centage of those who contract the fever die ; after death we seldom detect any dis- ease of the agminate glands of the intestine ; the peculiar rash scarcely ever fails to show itself; we are taught b}'' experience to refrain as much as possible from blood- letting ; and almost from the beginning, or quite, we find it necessary to sustain our patients by a liberal allowance of strong animal broths. The typhoid is now the prevailing type. You might, I say, almost suppose that I have been speaking of two distinct maladies. But, during each of the periods in question, some scattered cases have occurred, bearing most of the characters proper to the other period. Moreover, all acute diseases have assumed, wnthin the last ten years, in this town at least, an unusually asthenic character. So that the differences observed in the aspect and phenomena of continued fever, depend more, I conceive, upon an acquired dis- position of the human body, produced by some obscure general influence, and there- fore affecting the entire London community, than upon any change in the essential nature of the disease, or in the virus which (as I beheve) occasions it. The inverse relation between the rash and the intestinal ulceration is remarkable. When the one is prevalent, the other is rare. It would seem, in conformity with Dr. William Budd's views, that the specific poison displays its elective affinities by settling sometimes upon the mucous glands, sometimes upon the cutaneous tissues, and sometimes by sharing itself, though unequally, between the two. I have incidentally alluded to the duration of the fever. In this particular, also, there is much variety; a fact which is apparent even to the vulgar, and expressed in their ordinary discourse. They talk of the one-and-twenty day fever, and of the fourteen-day fever, according as the disorder "takes the turn" in three weeks or in a fortnight. It appears from the report made some years ago to the government upon the state of fever in Ireland, that the fever there generally began to depart on the fifth day ; wherefore it was called, in that part of the kingdom, the five-day fever 948 ^CONTINUED FEVER. Of the fever patients whom I saw in the Edinburgh Infirmary, almost all were fairly convalescent, or dead, before the end of the third week. In this place, the disease runs out longer; lasting three, four, or five weeks. I observed also, in Edinburgh, that many of those who recovered had a tedious convalescence, in consequence of very troublesome sloughs and ulcers which formed upon the sacrum and hips. In London, these bed-sores are comparatively uncommon. The symptoms attending the fever seem to vary also, cseteris paribus, according to the season of the year, and the situation of the patient : whether, I mean, he be surrounded with pure and cool air, or with a foul and hot atmosphere. In the colder months there is greater risk of inflammatory complications, and especially of pectoral affections : in the autumn we look more for diarrhoea, or for dysenteric complaints, engrafting themselves on the disorder. Where the air is close and foul, the symp- toms show a much greater tendency to the typhoid type, and the deaths are more numerous, than where it is pure. It is of great importance to hold correct notions as to the exciting cause of conti- nued fever; respecting which there has been, and there still is, a perplexing contra- riety of opinion among medical men. You are aware, from what has already been stated, that I consider the disorder to originate in an animal poison, and to be conta- gious ; communicable, I mean, from one who is labouring under the complaint, to another who is not. When the same disease attacks many persons in the same house or neighbour- hood, at about the same time, the popular suspicion soon arises that the disease is catching. Yet you know that disorders may be widely prevalent without being contagious. Agues, for example, engendered by malaria ; ordinary catarrhs and sore throats, produced by vicissitudes of the weather. When an epidemic malady affects large masses of the people suddenly and at once, it is presumably not conta- gious ; at any rate, it must have some other source besides contagion. When, on the contrary, it begins in a certain spot, and gradually spreads thence as from a centre, the presumption is in favour of its propagation from person to person. In investi- gating this subject, if we trace the fever among persons who have had intercourse with the sick, and more frequently in proportion as that intercourse has been close and continued; and if we find that other persons, living in the same place, and under precisely the same circumstances, except that they have had no known com- munication with the sick, escape the fever ; we have in these facts convincing evi- dence that the disease has been spread by such intercourse ; in one word, that it is contagious. Have we, then, facts of this kind ? We have, in the amplest abundance. We find, even in hospitals, where cleanliness and ventilation are prized and en- forced, that fever attacks many of the persons who come most often and most inti- mately in contact with those already ill of that disease : chiefly the nurses, next the clinical assistants and the most assiduous of the students, and the medical officers; rarely the other patients, even in the same ward. The separation of a few feet, if due regard be had to ventilation, is sufficient to render the poison inoperative, by diluting and diffusing it in the surrounding purer atmosphere. Three of our nurses in the Middlesex Hospital have fallen ill of fever during the epidemic now prevail- ing, and two of the three have died. I am now attending a pupil of the Charing Cross Hospital, who is persuaded that he caught the fever while watching some bad cases of it there. It is only when our wards are unusually full of fever patients that these disasters occur; but they happen very often, indeed, constituting the rule rather than the exception, wherever many fever patients are collected together: as in hospitals which are exclusively appropriated to their reception, or in the fevei loards of certain general hospitals. In such places, the effluvia which proceed from the bodies of the sick are, in spite of all care, the most abundant and the most con- centrated. Dr. Welch, whose book I have referred to before, has the following statement in point : " In this hospital (that is, Queensbury House in Edinburgh, which was opened for the sole use of fever patients during the prevalence of a severe epidemic in that EXCITING CAUSE. 949 City, in the years 1817, '18 and '19), since it was opened (which was the year before the time when Dr. Welch was writing), my friends, Messrs. Stephenson and Chris- tison, the matron, two apothecaries in succession, the shop-boy, washerwoman, and thirty-eight nurses, have been infected ; and four of the nurses have died. With the exception of but two or three nurses, who have been but a short time in the hospital, I am now the only person who has not caught the disease, either here or at the infirmary, within the last eight or ten months." I may quote a passage from Dr. Alison, in illustration of the same thing. He is speaking of a more recent epidemic, which occurred in Edinburgh in 1827 and 1828. He says: "During this epidemic, as well as that of 1817-19, many of the clerks and nurses employed in the Royal Infirmary have taken fever. Since November last, six of the clerks employed in the clinical wards only, four of those employed in the ordinary wards, and twenty-five nurses or servants, have taken fever. All these persons had necessarily frequent and close intercourse with the fever patients in the house, having been employed more or less constantly in the fever wards, excepting only four of the servants. Of these four, two had been employed in the laundry where the linen from the fever wards was washed ; one was a porter em- ployed at the gate, who would of course have communication with the fever patients at their entrance or dismissal, as well as with their relations coming to visit them ; and one was a nurse employed in the servants' ward, but who was in the habit of visiting the fever wards." Now, mark the contrast. He adds that, "in this very place and season, those of its inhabitants who have not had intercourse with fevet patients have almost uniformly escaped the disease. Of the inhabitants of the ground-Jloor of the house (including patients in the lock-ward), none but those already mentioned as having washed the linen from the fever wards, and the barber who shaved the heads of the fever patients, have taken the disease. Yet in the case of malaria" (to which I must apprise you that many medical men of great authority ascribe the occurrence of continued fever,) " it is the ground-floor of the house that is generally found the most dangerous. No one of the nurses, whose duty has confined them to the medical or surgical wards where no fever patients were admitted, has taken fever, with the single exception of the woman in the serv- ants' ward above mentioned. And of the numerous patients in these ordinary wards, the only one who has taken the fever, within my knowledge, during the pre- sent year, was a patient in the men's general chnical ward, who lay in the bed next the door that communicates with the clinical fever ward. If there be malaria in this house, therefore, it would seem to restrict \i?,e{{ in point of space, as at Queens- bury House in point of time, to the immediate vicinity of fever patients." To under- stand this last remark, you should know that, in ordinary years, the inmates of Glueensbury House escaped fever. We have similar testimony nearer home ; in this metropolis. "Every physician connected with the London Fever House, with one exception (writes Dr. Tweedie), has been attacked with fever ; and three out of eight have died of it. Also the re;u- dent medical officers, matrons, porters, laundresses, domestic servants not connected with the wards, and every female who has performed the duties of nurse, have, one and all, invariably been the subjects of fever. And to show that the disease is capable of being engendered by fomites, or clothes, the laundresses, whose duty it is to wash the patients' clothes, are so invariably attacked with fever, that few women will un- dertake the loathsome and disgusting office." Now, it is in vain to attempt to escape from this kind of evidence, by saying thai the situation of the Fever Hospital is infested with some local miasm ; for the in- mates of the Small-pox Hospital, which is immediately adjacent to it, are not affected in this way with continued fever, but remarkably exempt from it, as Dr. Gregory testifies. Evidence of a somewhat different kind, but leading to the same conclusion, is to be found in the fact, that when persons, having the fever upon them, are trans- ferred to some distant spot that was previously free from fever, they frequently form centres from which the disease begins, thenceforward, to spread. It is im 4£ 950 CONTINUED FEVER. parted, i-n this way, even in the country, from family to family, and from village to village. I was summoned home from Edinburgh on account of my mother's serious illness with continued fever. She was living in a village where there was little or no fever prevailing. While she was recovering my sister took the disease, and had it se- verelj'. It had evidently been introduced into the house by a man-servant, whose family lived in a neighbouring villag-e. This family had the disease raging in their house, and he was in the habit of going thither occasionally, and always of sending his linen to be washed there. He first, in our house, had the disorder, then two of the maid-servants, and next my mother. The cook of Trinity College, Cambridge, living in a street called the Petty Cury, had a daughter in London who fell ill with continued fever, and who insisted upon going home. At that time there probably was no case of fever in Cambridge : certainly none in the Petty Cury, as Dr. Haviland (who gave me the account) satis- fied himself by inquiry. The girl was very ill indeed, after she reached her father's house ; but she ultimately recovered. Every inhabitant of that house, except an old, seasoned nurse, became affected with the fever ; and three or four of them died. But no fever existed in the other houses of the same street. When one of the sick persons was convalescent, it was thought her recovery might be accelerated if she were put into a lodging at Trumpington, a small village two or three miles from Cambridge, in which there certainly was then no fever. Here she and the old nurse were waited on by a servant belonging to the Trumpington House. That servant soon sickened of the fever, and was sent to Addenbrook's Hospital, where she died. Take one more instance to the same effect, related by Dr. Alison. " Some years ago, at a time when there was no great number of fever cases in Edinburgh, I met with a case in the son of a shoemaker, who was lying in a room in which his father and two apprentices were at work. I could not prevail upon the father to remove his son to the hospital, although I stated the danger of the apprentices being affected. AVithin two or three weeks after, I found that the two apprentices were lying ill of fever in their own houses : one of them two hundred yards, the other half a mile distant from the workshop, and Avidely distant from each other. These young men likewise lay at home during the fever; and each of their cases was speedily followed by a succession of others in the inhabitants of the rooms which they occupied, and of those immediatel}- adjoining, who had never been at the workshop. In one of these houses seven, and in the other twelve, were thus affected. Now, on the sup- position of the fever being contagious, all this was to be expected, and all corresponded to the predictions which were hazarded on that belief. But on the supposition of such succession of fever cases depending on miasmata, there must have been at least two, more probably three, separate and accidentally concurring miasmata to explain the phenomena here observed ; one at the workshop, and one at each of the houses of the apprentices : and there must have been this extraordinary coincidence, that at each of these last the malaria sprung up just at a time when a patient was lying ill there of fever, which he had apparently contracted elsewhere. Further, the three houses in which these successions of fever cases were observed, are in situations very different from one another; and all of them have been, to my know- ledge, perfectly free from fever for years together, both before and since that time, notwithstanding that fever has been much more generally prevalent, and that they have been inhabited by successive families. What probability is there (continues Dr. Alison) that three separate miasmata should have arisen in these three houses, just at the time when their presence was required in each to produce an effect which had been foretold as the consequence of another cause undeniably operating i)n all?' If we contrast facts such as I have been advancing, with other cases, in which all die circumstances appear to have been precisely the same, except the presence of the alleged cause of the disease — making our observations always upon as large a scale us possible — we approach, as nearly as the subject will admit of, to a demonstrative l^roof that continued fever spreads by contagion. EXCITING CAUSE. 951 The reports which were made by the accredited physicians, to a committee of the House of Commons, respecting epidemic fever in Ireland, contain abundant and valuable evidence on this point also. Dr. Chejme states that the farmers and house- holders in some parts of Wicklow, who would not harbour or admit into their houses strolling persons, nor go to wakes or funerals, remained free from the disease. In Ballytore a committee was formed of persons who took pains to instruct the inha- bitants as to the precautions to be observed against infection : such as refusing admis- sion to wandering beggars, absenting themselves from wakes and other assemblies ; and even, under certain circumstances, from places of worship. These precaotrons were so effectual that not a case of fever occurred. Four villages in the neighbour- hood of Lismore are stated by Dr. Barker to have been preserved from the fever, chiefly by the exertions of some Roman Catholic clergymen, who persuaded the inhabitants to avoid all communication with Lismore, and with another town in its vicinity, where the fever was rife. Tt was observed also that bodies of persons collected together, and fenced about by barriers which precluded intercourse betAveen them and places infected with the fever, remained exempt from it ; children in charity schools, soldiers in barracks, and even prisoners in the jails. In the same parliamentary report you may see a letter from Dr. M'Donald, who had established a fever hospital at Belfast, which hospital alone, at one period, contained 190 cases of typhus. Very near the hospital was a school, containing 700 or 800 young persons ; a poorhouse with 800 inmates ; and a barrack with 1000 soldiers. These places were never more free from fever than at that time. Facts to the same purpose abound in the medical reports of the army and navy. Those of the navy are especially valuable and instructive in this matter, because the whole of the circumstances in which the patients are placed come under the certain and immediate cognizance of the medical officers superintending them. I cannot go into particulars here, but must content myself v.'ith referring you to the writings of Dr. Lind, Sir Gilbert Blane, and Dr. Trotter. You will there find that ships which had, for a great length of time, been quite free from fever, have had that disease spread rapidly from one individual, recently imported, so as to affect almost all the crew. This was often the case when raw recruits were drafted from the receiving ships. It appears, from reports made to Dr. Trotter by different naval surgeons, and published in his Mcdidna Naiitica, that the fever was conveyed to a great number of vessels forming the Channel Fleet, from the receiving ship called the Cambridge. It is, moreover, found, that when persons ill of fever are taken away from their own close crowded houses, and when means of purification are employed, the fever ceases to spread in those houses. This well-ascertained fact it is which gives to fever hospitals their greatest, nay, almost their only value. They would otherwise, as we have already seen, be detrimental or dangerous to all concerned with them, by concentrating the poison that produces the fever; without equivalent benefit. As it is, they cause, indeed, a certain amount of disease and of death ; but by affording opportunities for cleaning an infected neighbourhood of the seeds of the fever, and by so preventing its diffusion among a large and healthy community, they save many more lives than they sacrifice. You may be surprised that I should appear to labour this point ; and should take so much pains to prove what may seem to you, as I confess it seems to me, to be an undeniable proposition. But I do so because many have denied, and do still deny it ; and plausible reasons are given, by men of name and character, for discarding altogether the notion of continued fever being propagated by contagion. Some even, who have begun by expressing their belief that the disorder was contagious, have ended by becoming strong, ay, violent anti-contagionists. The late Dr. Armstrong was one of these ; and there are living men, of high and deserved repute, both in this country and abroad, who hold what I cannot help thinking erroneous — and if erroneous, then manifestly dangerous — opinions on the subject. Chomel informs us. that not one in a hundred of the profession in Paris believes that typhoid fever is a communicable disease. Upon a subject so important it is right that vou should bo 952 CONTINUED FEVER. furnished with data for forming a correct and settled judgment. But I scarcely ex- pect that the facts I have now brought forward will carry the same conviction to you all ; for I agree with Dr. Christison in believing that the discrepancy which exists upon this, as upon some other controverted questions, depends, in part, upon the dif- ferent constitution of men's minds, and their peculiar habits of thought. Most of the anti-contagionists whom I have known have belonged to that party in this country which advocates what are called liberal opinions in pohtics and in religion. If this should prove to be generally true, it must be regarded as a curious psychological fact. I have laid before you some of the positive evidence which goes to prove the con- tagiousness of continued fever. You may naturally ask, and it is but fair that I should tell you, what are the arguments on the other side of the question. First, then, it is asserted that continued fever cannot be contagious, because some, nay many persons, who JiCive intercourse with the sick, do not contract the disease. But the force of this reasoning is completely broken by the well-known fact that, in respect to diseases which are on all hands acknowledged to be contagious, and which are even propagable by inoculation, small-pox for example, the same kind of exemption notoriously happens. Some of those who so escape may have had the fever before ; and have thereby become less capable of being re-infected by the poison. I believe it to be uncommon for a person to have genuine continued fever for a second time, unless he is exposed to the contagious matter in a very concen- trated state, or for a long time together. Some may, by original peculiarity of con- stitution, be proof against its power; but probably in most cases, the immunity arises from the circumstance that the person has been fortunate enough, or careful enough, to escape imbibing an effective dose of the poison. You may breathe, for a good while, without much hazard, an atmosphere but faintly imbued with the contagious effluvia ; and you may, though with somewhat more of hazard, breathe, for a short time, air which is strongly tainted by them, and yet go free. Allowance must also be made, in some cases, for the effect of habit in fortifying the system against contagion. Persons who are much and often exposed to these effluvia, are thereby seasoned, in some degree, to the noxious atmosphere : just as drunkards and opium eaters become at length impassive under such a dose of their customary stimulus as would intoxicate or stupefy a novice. Upon this principle has been explained the comparative immunity from contagious diseases, (under like cir- cumstances of exposure,) of medical practitioners, and nurses ; of the keepers of filthy lodging-houses, while the new-coming inmates suffer ; and even of prisoners, who, without having had the disease themselves, may nevertheless carry forth and com- municate the infection : as is said to have happened at the celebrated " black as- sizes" in Oxford ; and again at the Old Bailey in the year 1750. This argument, that the fever cannot be contagious because many of those who come near the sick are not affected with it, has been happily ridiculed by comparing an epidemic to a battle. A man might say, " I was in the battle of Waterloo, and saw many men around me fall down, and die, and it was said that they were struck down by musket balls ; but I know better than that, for I was there all the time, and so were many of my friends, and we never were hit by any musket balls. Musket balls, therefore, could not have been the cause of the deaths we witnessed." And if, like contagion, they were not palpable to the senses, such a person might go on to affirm that no proof existed of there being any such things as musket balls. It must not be forgotten that this same argument, whatever may be its validity, is equally' potent against any other general cause: against local miasms; against an undefined something in the air. Again, the disorder does not spread, say they, in the houses of the rich. But why should it not do so, if it proceeds from any cause which strict attention to cleanliness and ventilation does not disarm ? The fact, when rightly considered, is a strong cir- '.•umstance in favour of the theory of contagion. But then the disorder often occurs when we can trace no contagion : and the full answer to this argument is to be found in the fact that the same difficulty applies to diseases which are not only confessedly contagious, but which are believed to have, ALLEGED CAUSE. 953 now, no other source than contagion ; even, as I showed you before, to small-pox All that the argument can amount to, is a presumption that the distemper may sometimes originate independently of contagion. A person may be exposed to the agency of the contagious matter quite unconsciously, by coming into contact with fomites, or by approaching another person who is just convalescent from the disease. A nobleman died here, in the prime of life, last year, of scarlet fever. The story goes that he had just come to town, and was dining out, and by his side sat a young lady who had just recovered from that complaint ; and that from her he unwittingly re- ceived it. Tn such a place as this there are a thousand unsuspected ways in which contagion may be disseminated. It may lurk in a hackney coach ; you may catch the complaint from your neighbour in an omnibus, or at the theatre, or at church ; your linen may be impregnated with the subtle poison in the house of your laundress ; or your coat may convey it from the workshop of your tailor. So that, when con- tinued fever occurs, it is very difficult indeed to be sure that it has not arisen from contagion ; and it becomes a very interesting question whether the disease ever pro- ceeds from any other cause. It is, however, of primary importance to determine whether it be, or be not, communicable. By our belief in this matter the lives of our neighbours and clients may be saved, or lost. Even if we doubt about the con- tagiousness of the disease, we are bound to act as if we had no doubt upon the sub- ject ; and I would admonish you (although that is a lower and poorer motive) that your own reputation and success may be endangered by mistakes in this very thing. I have been told of one instance which may serve as a warning. A lady came from the country to London, to see a sister, who was ill of fever. She asked the medical attendant if there was any danger of infection. He happened to be a staunch non- contagionist ; and he said " no danger whatever." Upon the faith of that assurance, the lady resolved to sit up with, and to nurse her sister ; but she fell sick herself of the disease, and died. I believe this did not shake the medical man's opinion. He attributed the mischance to some local miasm. But he could not persuade the lady's friends of this. They maintained that her death lay at his door ; and whether they were right or wrong, the affair was so much talked of, and was so injurious to him, that he was obliged to leave that part of the town, and to seek for practice else- where. Many sporadic cases occur of febrile disorder, which do not belong to the category of continned fevers, and yet are liable to be confounded with them. All the phleg- masice are attended with pyrexia, and the local inflammation may be slight, or very obscurely marked, and easily overlooked ; but the febrile symptoms are much the same as those which constitute the more inJJammatory forms of continued fever. In hke manner severe bodil}'' injuries, compound fractures, for example, sometimes give rise to constitutional symptoms precisely resembling the most prominent phenomena of its typhoid forms. Excluding all such spurious resemblances of the genuine dis- ease, I confess my own opinion to be, that continued fever, hke small-pox and measles, originates, in all cases, from a specific poison. With respect to all these disorders, I conceive that, in every large community, there is constantly kept up a sufficient stock of contagious matter, to act as a sort of leaven, whenever circum- stances favourable to the development of the disease, as an epidemic may chance to arise. Continued fever has been ascribed, by those who deny its origin in contagion, to certain other causes ; some of which demand attention, not merely on account of the interest that belongs to the whole inquiry, but also because they really are important agents in the extension of the disease. First, then, it was, and is, a common belief, that continued fever may be generated by the effluvia constantly proceeding from the human body, even when healthy, if these effluvia be accumulated and condensed by the crowding tofjether of many per- sons m close, dirty, and ill-ventilated places. It is unquestionable that, when once introduced, the disease spreads, under such circumstances, with fearful rapidity ; but the point at issue is whether it be ever so caused de novo. I must refer you, for good evidence that it is not so engendered, to Dr. Bancroft's book on the yellow fever. He shows that typhus fever does not spring up in places where it could scarcely fail 4e^ 954 CONTINUED FEVER. to appear if that theory were true. He instances the natives of the arctic regions, who, in order to shelter themselves against the extreme cold of their chmate, live during the greater pan of the j^ear in close subterraneous dwellings, from which the fresh air is studiously excluded, and of which the atmosphere becomes so offensively foul as to be scarcely supportable by a stranger: yet continued fever is not known among them. A similar exemption from that disease is observed within the tropics, in the African slave ships, where " the poor wretches are crowded together below the deck, as close as they can possibly lie, in a sultry climate, barred down with iron to prevent insurrection." Although many of them die from suffocation, and from fluxes, 5'et Dr. Trotter, who was himself, at one time, surgeon to a slave ship, de- clares that "contagious fevers are not their diseases." Dr. Bancroft quotes also a narrative of the sufferings of 193 Europeans, w'ho, during the time of the French Revolution, were "deported" to Cayenne, in the Decade frigate. They were crowded, and even squeezed together, in so small a space, and for so long a time, that the sentinels, who were placed at the hatchways to guard them, and who were thus exposed to the hot and fetid air which came from their hole of confinement, de- manded that their period of offensive duty might be shortened. Yet none of these miserable persons perished, nor did fever, properly so called, arise among them. Neither did that distemper present itself in any of the survivors of the Black Hole at Calcutta ; the frightful account of which, by one of those survivors, Mr. Howell, is abstracted in an appendix to Dr. Bancroft's work. Fever used to infest our English jails ; but that it was always imported, and never engendered there by filth and defective ventilation, and by the accumulation of human effluvia, may be concluded from the fact that the benevolent Howard, when he visited the prisons on the continent, found, to his great surprise, that they were free from fever, although they were no less close, crowded, and impure than our own. He brings the result of his observations and inquiries concerning the cause of the jail-fever, to this pointed conclusion : — " If it were asked," says he, " what is the cause of the jail-fever, it would in general be readily replied, the want of fresh air and cleanhness ; but as I have found in some prisons abroad, cells and dungeons as offensive and dirty as any I have observed in this country, where, however, this dis- temper was unknown, I am obliged to look out for some additional cause for its pro- duction" — which additional cause can be no other than the contagious poison ema- nating from the bodies of those who have the fever. It is true that fever is most frequently met with, and most rapidly propagated, where men are crowded together in jails, or in close and ill-ventilaied places ; but this affords no reason for supposing that it is ever generated there, any more (to use a homely illustration of Dr. Ban- croft's) than the general prevalence of lice and other parasitic vermin in such places, proves that these vermin are generatedhy fihh, by pent-up human effluvia, and vv'ant of ventilation, instead of being merely fostered thereby. Again, continued fever has been attributed with great confidence, to a vitiated state of the air, from the putrefaction of dead animal and vegetable substances. Dr. Bancroft deals with and demolishes this error also : showing that neither the putrid atmosphere of dissecting-rooms (respecting which you must have some personal ex- perience), nor the noisome effluvia from full and ill conducted burial-grounds, nor those to which tallow-chandlers, soap-boilers, glue and cat-gut makers, and the melters of whale blubber are exposed, nor the foul air of sewers and privies, have ever been known to produce anything like continued fever. In some parts of Essex, near the coast, where the farmers are in the habit of manuring their fields with shoals of sprats, I have seen large tracts covered with these fish in a state of putrefaction. The stench they occasion is horrible ; but no disease results. Dr. Chisholm, in a paper to which I can only refer, but which I would recommend you to look at, in the sixth volume of the Edinburgh Medical and SurgicalJournal, brings forward other, and very satisfactory, instances, to the same purpose : from a bone manufactory, near Briton, in Gloucestershire; from an establishment (now relinquished) on the banks of the Avon, for converting the flesh of dead animals into adipocire ; from manufactories for refining sugar, where the blood of slaughtered animals is kept for that use by butchers ; from the leather-dressing business ; — all tending, I say, to the conclusion, ALLEGED CAUSE. 955 that air, contaminated by ihe decomposition of animal substances, is not necessarily noxious to life ; still less productive of that specific disease which we are now con- sidering. The old belief, therefore, was unfounded, that the exhalation from the dead and putrefying bodies of men and horses, lying unburied on the field of battle, is capable of producing a pestilence. Many instances to the contrary are on record: one, of an early date, is thus stated by Biemerbroek: — "Anno 1G42, in agro Julia- censi maxima strages facta est, et ad minimum 8000 militum occisi fuerunt, praster majorem adhuc famulorum, rusticorum,aurigarum, puerorum et mulierum numerum, atque equorum copiam innumerabikm ; corpora inhuraata sub dio computruerunt, nulla tamen pestis insecuta est." It has been said that fever is produced by some unknown condition of the air, im- perceptible by our senses, but distinct from contagion. I believe this is a very popular notion ; but it is perfectly gratuitous and untenable, and inconsistent with observed facts. You may have fever raging in certain parts of a town, and yet the parts in the immediate vicinity of these be quite exempt from it. Now this could hardly be, if there were some general property diffused through the atmosphere capable of engendering continued fever ; and, as I stated before, this notion is severely pressed by one of the arguments which the non-contagionists themselves are fond of employing If the disease depend upon contagion, some persons in the commu- nity may come less near the sick, or imbibe a less dose of the contagious poison, than others, and so escape : but if the cause of fever were spread abroad throughout the whole atmosphere, all must be exposed to its influence, and fevv, we may sup- pose, could avoid suffering from its operation. Exposure to cold is another cause to which fever has been sometimes attributed. But this is an agency so widely prevalent that if it alone could excite fever, that complaint Avould be far more general than it really is, and we should be able to trace it oftener and more distinctly than we can, to the alleged cause. That, by its debili- tating effect, cold will predispose the body to be affected by the contagion of fever, I well believe : and the same remark is appUcable to another cause that has been assigned ; namely, deficiency of nourishment. Dr. Alison, in his admirable essay On the Management of the Poor in Scotland, has clearly proved that the preva- lence of contagious fever amongst the lower orders is always in direct proportion to their state of physical destitution. The association of pestilence with famine is pro- verbial. But we do not find that continued fever is ever created by the mere want of nutriment. In persons who have sought to starve themselves to death — among sailors who have of necessity been kept upon very short allowances of food — in cases of insulation by snow storms, or by the accidental closure of a mine — we find, indeed, that disease is produced by the privation of nourishment ; but it is not continued fever. The condition into which the sufferers are brought is more like scurvy. So that although a want of sufficient aliment may be, and doubtless is, a powerful aux- iliary in prornoting the effect of the contagious poison, there is no ground for sup- posing that it ever primarily or solely occasions fever. In fact, all the circumstances which I have now been considering act as predis- posing causes. They render the human body an easier prey to the real exciting cause, which is a specific animal poison. You will remark that they are all debili- tating circumstances ; and where several of them co-exist, their joint influence ir subduing the system, and bringing it into subjection to the contagion, is very great. For the same reason, depression of spirits, however produced, has a strong predis- posing effect ; as strong, perhaps, as any other single cause. Of this I have seen, if I mistake not, some remarkable examples. Upon this principle we may explain the fact, that continued fever is especially apt to attack those of the lower classes who have recently come to reside in the metropolis ; who are often living anxiously, and with persons to whom they were not previously known. We have had nume- rous opportunities, in the hospital, of noticing this curious circumstance ; and it is mentioned by almost all the French writers on fever. To the same principle also we must attribute the tendency to fall down in fever, observed in young soldiers and sailors. You will find statements to that effect in Dr. Trotter's works, and in those of Dr. Lind and of Sir Gilbert Blane. When fever appears in a ship, the raw 956 CONTINUED FEVER. sailors are always the soonest attacked by it : and it is the same with the recruits in the land service. In a defeated, dispirited, or retreating army, its ravages are often frightful. Here we have, combined, fatigue, a deficiency of wholesome food, and mental depression. However paradoxical the assertion may seem, a predisposing cause may even be applied, and operate, after the exposure to the exciting cause — and so render the latter effective when it might not, otherwise, have been so. Dr. Russell observed the plague sometimes to " hang ambiguously" about persons for several days. In this state, an overheated bath, or a sudden impression of fear, especially fear of the disease, has roused the lurking poison into activity. It is a suggestion of Dr. Hen- ry's, that atmospheric variations may call into action contagious poisons already admitted into the system, but not yet manifested by the usual phenomena ; and, operating thus over a wide space, and upon numbers at once, may occasion those sudden and violent outbursts of epidemic disease, of which numerous examples are on record. You must, I think, perceive the importance of distinguishing between the one exciting cause and the many predisposing causes of fever. The latter are generally beyond our control. We cannot hope to remedy extensive destitution ; nor to sepa- rate it effectually from its concomitants of filth, and despondency of mind. But we may, by timely diligence, root out the specific contagion, or confine it within narrow bounds. When the sick can be at once removed from their crowded homes to a fever hospital, and their impure apartments ventilated, cleansed, and whitewashed, the disease may often be kept in check, if not entirely stopped ; and the yet healthy persons of the infected district be preserved from its grasp. For, as I stated before, there is reason to believe that the poison, unless pent up, does not remain active at any great distance from the person from whom it proceeds ; not even many yards, or feet. It is very rare, I apprehend, to meet with instances of the disease being communicated in the open air. It is almost always caught, if at all, in the interior of houses. It is extremely uncommon for it to extend from one bed to anothe" in our general hospitals, where great attention is paid to cleanliness and ventilation. The noxious qualities of the poison are diminished, and at length destroyed, by its dilution with common air, just as those of other gaseous poisons are : and hence, in private houses, in the better ranks of society, where the rooms are spacious and airy, and proper precautions are taken, the disease hardly ever spreads. What are those proper precautions ? They are simple, and may be stated in a very few words. Where choice can be made, a large apartment should be selected for the sick per- son. Unless the weather be very hot, there should be a fire in the room, for it acts as a ventilator. The air of the chamber should be kept fresh by having a window or door (according to the weather) always open : or both window and door. Bed and window curtains, carpets, and all superfluous articles of furniture, should be removed. Great diligence should be used in keeping the patient clean, by the requisite ablutions, and by frequently changing his sheets and his bod}^ linen ; and these should be immersed at once in water; and all discharges from the sick per son's body should be instantly carried out of the room. All unnecessary intercourse with the patient, by his family and friends, should, for his sake as well as theirs, be forbidden. As life advances, the susceptibility of the disease appears to diminish : for which reason the nurses and personal attendants of the patient should not be very young : and all who do approach the sick bed should take care to avoid, as much as possible, inhaling the patient's breath, or the emanations which proceed from his person. Friends who visit the apartment at intervals only, should never enter it fasting. And you may, if you please, employ the chloride of lime as a disinfecting agent, in aid of the simple measures I have just recommended ; but by no means instead of them. People hang a big of camphor round their necks, and think themselves safe against infection. The mental confidence which that expedient is calculated to inspire, may perhaps afford some degree of protection ; but camphor has, in reality, no prophylactic virtue ; and all these artificial scents are objectionable, inasmuch TREATMENT. 957 as they tend to conceal offensive odours which might otherwise reveal the actual danger. I shall speak of the treatment of continued fever when we next meet. LECTURE LXXXVI. Continued Fever, concluded. Treatment. Small-pox. Its essential symptoms. Distinction into discrete and confluent. Periods and modes in which it proves fatal. The treatment of continued fever has been, at all times, a stumbling block to young practitioners ; and a subject of dispute even among physicians who have built it upon their own experience. Before I attempt to trace out any plan, or to lay down any principles for your guidance, it may be useful to inquire how it happens that the practice in this disease has been so fluctuating and unsettled. In the first place, then, it is very difficult to estimate the value and efficacy of any particular plan of treatment, and still more of any particular remedial substances, in this disease. Continued fever, like other disorders which run a definite course, and have no direct or necessary operation in spoiling the structure of vital organs, has a strong natural tendency to terminate in health. We see this tendency when the disease is left entirely to itself, and it equally exists when remedies are employed to regulate its course, or to abbreviate its duration. No one can doubt, who has had much experience in fever, that this tendency is sometimes thwarted by the nimia cura medici; and that patients get well in spite of the well-meant but mischievous interference of the doctor. This tendency to recovery is a constant source, therefore, of fallacy in our observations upon the behaviour of this disease under different plans of treatment ; and upon the effects and utility of remedies. It leads us, loo oftenv into the danger of ascribing to drugs what is really due to the workings of nature : of confounding antecedents and sequences with causes and effects ; of counting re- coveries as cures. And this danger is increased by the circumstance that continued fever, although it observes a certain definite course, is nevertheless liable, even when left altogether to itself, to sudden and remarkable changes in the symptoms, some- times for the worse, and sometimes for the better ,' and often we cannot perceive any obvious reason for these fluctuations. But if this happen when no medicine is given, so also will it happen when the disease is submitted to treatment; and it requires more than a Uttle care and discretion to avoid attributing the changes which so occur to the remedy which was last employed. For example, the abatement or cessation of headache, after a few days have elapsed, is a natural phenomenon : whereas an inexperienced or a careless person might easily persuade himself that it had yielded to his method of treatment, and that it was a favourable omen : neither of which conclusions would, however, be warranted by the circumstance upon which it was founded. There is yet another source of difficulty connected with this subject. I have shown you that not only individual cases of fever, but different epidemics, vary much in their character ; so that a plan of treatment which was well suited to one epidemic, may be improper and even hurtful if indiscriminately applied in another. These considerations may serve in some measure to teach us how it has happened that so many different, and sometimes opposite remedies and modes of treatment have been recommended by different practitioners for the cure of this disorder. The tendency to a termination in health was very plainly visible in the epidemic fever in Ireland, to which I have more than once referred. The mortality among the patients who were placed in sheds upon straw, with very little medical care, and even with out any great personal attention from others, was very small indeed. No one can form even an approximate judgment of this tendency, who has not seen the disease 958 CONTINUED FEVER. under several varieties of practice. Doubtless one rule which we derive from a clear perception of the same tendencj'' is, that we should not interfere unnecessarily. Aoxftf rtfpt to. vovsr^uata. hvo, (says Hippocrates) a^iXsew, rj fxri j57Mrf(£iv, There are two things to be considered in the treatment of diseases : first, that we do the patient good ; secondly, that at least we do him no harm. In all these exanthemata, he must be reckoned the safest and the best practitioner who knows when to abstain from acting, as well as when to act ; in other words, who has learned when, and to what extent, the case may be left to the salutary processes of nature. However, there is an opposite error to that of mischievous activity. The tendency to recover which manifests itself under different modes of treatment, and even in spite of opposite modes, has induced, in some minds, a degree of scepticism as to the utility of any remedies, that may easily be carried too far. It does not follow, be- cause the majority of patients under continued fever would at length emerge into health, although no remedial measures were employed, that the disease ought there- fore to be abandoned to what Cullen calls the vis medicatrix naturae. It is not quite correct to say, with the older pathologists, that the whole disorder is merely an effort oi nature to throw off something noxious to the system, and therefore is not to be interfered with. The true view of the matter I apprehend to be that which a toxi- cologist might take. The disease is produced by a poison of which the injurious impression upon the animal economy at length ceases, or passes off, of itself; in the same manner, only more slowly, as the influence of a dose of opium will spontane- ously pass away. But during the natural course of the fever, as in many other cases of poisoning, morbid processes are apt to be set up, which, if suffered to proceed unchecked, would inflict irreparable injury upon important organs, and which are fairly within the scope of remedial management. Our object must be, when the fever is once established, to conduct it to a favourable close ; to "obviate the tend- ency to death." Upon this point I agree most entirely with Pitcairn, who, being asked what he thought of a certain treatise on fevers, declared, " I do not like feve. curers. You may guide a fever ; you cannot cure it. What would you think of a pilot who attempted to quell a storm ? either position is equally absurd. In the storm you steer the ship as well as you can ; and in a fever j^ou can only employ patience and judicious measures to meet the difficulties of the case." When some immediate change ensues in the symptoms or in the feelings of the patient upon the administration of remedies that are generally followed by sensible effects, we are warranted in ascribing the change to those remedies. But even here comes in the fallacy already noticed, arising from the sudden and spontaneous changes that are apt to occur in fever : and this fallacy is to be got over only by multiplying our observations. After all, the best guide that j'-ou can have in determining upon the general principle of treatment in a given epidemic, or even in an individual case, is that which Dr. Alison has so ably enforced in his lectures and in his writings upon this subject. I mean the observed tendency to this or that mode of dying. The manner and circumstances of the deaths are of more practical importance than of the recoveries. After briefly passing in review some of the principal remedies that have been em- ployed and recommended for this disease, I propose to sketch the plan which I am myself in the habit of pursuing in the management of fever patients. It was once a favourite practice with physicians to attempt to cut short the fever at its outset: and the two expedients which were chiefly relied upon for that purpose were emetics, and the cold ciffusion. They have both of them, in this country, gone very much out of fashion. In truth, neither reason nor experience encourages us to look for such a result from such measures. If fever depend (as I believe it does) upon a poison in the blood, it is not to be dislodged by the act of vomiting, nor washed out by the forcible descent of cold water upon the skin : and in the few instances in which the one or the other of these remedies may have seemed to arrest a fever, or to check its progress, that effect has always occurred at the very commencement »f the complaint : so that we cannot be sure (and the probability lies the other way) that these were really cases of fever at all, or that they would not have ceased even ii TREATMENT. 959 nothing had been done for them. Perhaps emetics may, in the present day, be too much neglected. 1 have no notion of their stopping the fever; but when given early, especially if gastric disturbance is a prominent symptom, they are sometimes followed by a marked abatement of many morbid sensations. " It is astonishing," says the observant Sydenham, " how it happens, that a vomit, which does not pro- duce either a large or a morbid discharge from the stomach, should so materially re- heve the nausea, restlessness, anxiety, and furred tongue of the patient." The cold affusion is not more effectual in cutting fever short than the treatment by emetics; and it has these great disadvantages, that it fatigues and alarms the patient: and when the vital powers are naturally feeble, or are much depressed by the disease, the very shock of the affusion may be attended with injurious consequences. A modification of this expedient is, however, often of great use in abating the morbid heat, and soothing the uneasy feelings of the patient. I mean the practice of cold or tepid sponging of the surface. This is one of the remedies which, when the symptoms appear to indicate it, deserves to be tried ; and the propriety of con- tinuing or of discontinuing it may be determined by a very simple test; namely, the feehngs and wishes of the patient himself respecting it. It is most adapted to the more inflammatory, and least adapted to the more typhoid types of the malady. Great controversies have been maintained in regard to the effect of blood-letting in fever. They who hold that the fever consists in a general disturbance of the sys- tem, growing out of some local inflammation, and they especially who believe that continued fever is nothing else than inflammatioa of the brain and its membranes, would naturally seek to cure it by the remedies of inflammation. But although local inflammation, and even inflammation of the brain, is very apt to spring up in the course of continued fever, there is no reason for thinking that inflammation anywhere is essential to the fever ; but very much reason for the opposite opinion. The active use of blood-letting has been in favour and out of favour, with the medical world, again and again : and this very circumstance would of itself make us doubt the pro- priety of its indiscriminate adoption. The late Dr. Armstrong gave a strong and unfortunate impulse to the practice of free blood-letting in continued fever, by the publication of his well-known and inge- nious treatise on the disease. I have no doubt that great mischief was done by that work. I may say so without scruple, since Dr. Armstrong is gone, and neither his feelings, nor his success, can be hurt by the expression of such an opinion : and I do so the rather, because it is well known here that Dr. Armstrong saw reason, as his experience increased, to qualify those views respecting the nature and manage- ment of fever, which his earlier observation of it in the country had led him to form. This change in his sentiments was probably justified and produced by a change in the character of the fevers that he witnessed ; but it does not appear in his book. You have heard me state already that whereas the fevers which occurred in London for some time previously to the year 1831 or 1832, not only bore, but required the abstraction of blood, in some way or another, — since that period, and especially since the epidemic cholera visited us, i-t has been necessary to abstain, whenever we could with safety, from taking blood at all ; and still more necessary, even if we take away blood with one hand, to uphold the patient with the other: while, in the former pe- riod, wine and stimulants of all kinds seemed generally superfluous, if not pernicious. Dr. Williams, of St. Thomas's Hospital, has shown very clearly, I think, in his recent publication on " Morbid Poisons," that the evidence against the eflicacy and the safety of bleeding in continued fever — of bleeding largely, I mean, from the arm — far outweighs that in its favour : and I venture to advise you, as the result of all that I have seen of the disease in London and elsewhere, not to draw blood from a vein, even early, merely because the disease is or appears to be fever ; not to order vene- section unless there be some other manifest reason for it — i. e., unless the febrile symptoms run unusually high, or unless some local inflammation is unequivocally present : and, when you do bleed, do not take a drop of blood more than seems ab- solutely necessary to answer the desired end. Bleed your patient, therefore, if at all, m the upright posture. Purgatives. — What are we to say in general with respect to them ? This, I 960 CONTINUED FEVER. believe — that the intestines should be cleared by an active aperient in the outset: and that laxatives should be continued if the bowels do not act every day without them. When the typhoid type is strongly marked, and when the symptoms indicate ulceration of the intestinal glands, purgatives are not to be pressed. Much contrariety of opinion has prevailed also among practitioners, and does pre- vail, about the administration of mercury in this disorder. Without attempting to strike the balance between these conflicting judgments, it is my business and duty to state my own belief, to tell you what is the result of my own observation, upon this and other disputed points. I must repeat, then, that my practice has altered, in several particulars, within the last iew years. In the fevers which I treated, or saw others treat, in London, prior to the breaking out of the present epidemic, mer- cury, in one shape or another, was ahnost constantly prescribed : and a great num- ber of the patients were brought, sooner or later, under the specific operation of that mineral : and in these patients (with one exception only, where the mercury appeared to do neither good nor harm) a decided improvement was almost immediately appa- rent upon the supervention of soreness of the mouth ; and all such patients ultimately recovered. I am aware, however, and I wish you to be aware, of an alleged source of fallacy in this matter. The gums in that variety of fever to which I am at present referring, did not readily take on the mercurial action ; and it might be (though such is not my own impression), it might be that the affection of the mouth by mercury was attributable to the mildness or to the cessation of the disease, rather than the cessation of the disease to the effects of the mercury upon the system: that the im- provement was the cause, and not the consequence, of the mercurial action. In the form of fever that is ??o?tate of torpor, and bringing on a general and moderate reaction: it is probable that in certain cases, where the state of congestion is very considerable, and it is not promptly and perma- nently relieved by the remedies already recited, some mild stimulant, as the ammonia, or turpentine, or wine-whey, may prove advantageous, if cautiously administered and its effects carefully watched ; as a general rule, however, the free use of stimulants, particularly of the more active ciass, is calculated to produce injury rather than good. An active cathartic, as the combii ation of calomel or blue mass with aloes and extract of colocvnth, followed in a few hours 1 y the compound infusion of senna, will very generally SMALL-POX. 975 cause a copious discharge from the bowels, of a dark-coloured, tenacious matter, and by thus assisting to unload the j^ortal system, will often produce a marked improvement in the general symptoms of the disease. In the treatment of congestive bilious fever, the abstraction of blood from the arm, in the first period of the attack, or subsequent to the use of the warm bath and frictions to the surface, has been recommended by many practitioners as an imporant remetly — one indeed from which more prompt and certain relief is to be obtained than from any other that we can employ. The evidence in its favour is certainly very strong; and we believe that there are many cases in which prompt reaction maybe produced, and the danger of permanent local disease prevented by its employment. The greatest judgment and caution, however, are demanded in the use of the lancet in all cases of congestive disease; the effect produced upon the pulse must be carefully watched, and the flow of blood instantly stopped if any disposition to sinking is detected. To determine beforehand the amount of blood that it will be projier to take away is impossible — the effects produced — the relief obtained, are the only guide. Even, however, when during the flow of blood the pulse becomes more free and developed, but a moderate quantity should be taken away at once — should we have to repeat the operation after a short interval. Occasionally but a drop or two of blood will escape from the vein when it is first opened, but, after a short time, the circulation becoming more free, the blood flows in a full stream, with decided relief to the patient. It is only, however, in the early stage of the highly congestive forms of bilious fever that venesection is admissible, and even in these the flow of blood should be instantly arrested if the pulse is found to sink, or even to remain oppressed and undeveloped after a small quantity has been lost. When prominent symptoms of hyperemia of the brain, lungs, or other important viscera present themselves, the application of cups to the head, chest, or in the neighbourhood of the aifected organ, will often be found decidedly advantageous. As soon as reaction takes place, the use of quinia should be commenced with, in large doses, repeated at short intervals. Of the curative jiowers of the quinia in this form of fever we have the fullest and most unquestionable testimony. Many of the physicians of the southern and western portions of the United States place their chief reliance, in congestive remittent fever, upon the sulphate of quinia prescribed in enormous doses — twenty, thirty and even fifty grains, repeated at short intervals until a solution of the disease is obtained; but although we are convinced of the propriety of large and frequent doses, those a^Uuded to are certainly excessive and uncalled for. The period of convalescence from the congestive form of bilious fever will require the same management as that from the more open and inflammatory forms. In the highly malignant remittent, occasionally met with, in which the vital forces, crushed at once by the overwhelming intensity of the morbid cause, fail apparently to exhibit any resistance or reaction ; they must be sustained, to use the words of Dr. Dickson, {Essays on Pathol, and Therapeut., vol. i., p. 319,) by every means within our power, while we have immediate recourse to the most impressive revulsives. The hot bath, sinapisms, vesications, must be quickly and assiduously applied, while we stimulate, by the freest use of internal remedies — carefully selecting such as are best adapted to the circumstances presented. If, as is often the case, the patient suffers severely from pain in the chest or abdomen, large doses of opium or morphine must be administered, while Ave keep up his sinking strength by brandy, ammonia or ether. In the superintendence of such cases we should rather incur tlie risk of over-stimulating transiently, than fall below the requisite point of excitement in our use of stimulants. Dr. Dickson is fully persuaded, that he has seen more than one patient die from the timidity of his physician in this respect; •who, keeping at a cautious distance behind the disease, would not venture on the exhibition of any excitant adapted to the feeble excitability, until the vital energies upon which alone stimulants can act, had become worn out and exhausted. If the stomach will bear it, it will be proper to administer, also, some of the preparations of cinchona. The sulphate of quinia in full doses will be often retained and do good. "-Alternate, combine, and recombine your stimulants, the effects of which may perhaps be aided by warm and nutritious fluids, wine-whey,»arrow-root with wine, wine alone or spiced, brandy with milk or in mucilage. These energetic measures will usually be found effective within a very short period — improving the pulse, and arousing the general powers of the system. Yet you must not permit yourselves to be disheartened into inaction by their apparent inefiicacy or slowness of impression. Persevere, not only while there is a reasonable hope, but even after all hope seems extinguished ; and you will feel yourselves amply repaid by the gratification, which will not perhaps be denied you, of saving more than one fellow-creature from the destruction which seems inevitably to await him." — C] I pass, without pausing, from the consideration of continued fever, to that of small' pox or variola : a disease, fortunately, less common in this country than it used to De, yet still sufficiently frequent and formidable to require that we should acquami ourselves with the phenomena it is accustomed to present; and very prevalent hero 9T6 SMALL-POX. as it happens, at present (1838). I have already mentioned, by anticipation, severa points in its history. This frightful disease sets in with smart febrile symptoms : rigors, followed by heat nnd dryness of skin, a hard and frequent pulse, pain in the epigastrium, with nausea and vomiting, and headache. Sometimes wild delirium, sometimes convul- sions, mark its outset. Then, to use the words of Cullen's definition, " tertio die incipit, et quinto finitur, eruptio papularum phleginonodearum, qua3 spatio octo dierum, in suppurationem et in cruslas demumabeunt, ssepe cicatrices depressas, sive foveolas, in cute relinquentes." When small-pox is fully formed, it cannot be mistaken for any other complaint : but it is of some importance to recognize it at its very commencement, for the force of the impending disorder may sometimes be lessened by judicious measures adopted at that early stage. The symptoms, however, that mark the outset of all febrile diseases are necessarily very much the same. If the pyrexia set in when small-pox is prevalent in the neighbourhood, if the person in whom it occurs be an " unpro- tected" person {i. e., one who has neither been inoculated nor vaccinated previously), and especially if he be known to have been exposed, within from nine or ten days to a fortnight, to the contagion of variola, we may well suspect that the disease will turn out to be small-pox, and act upon that suspicion. Nevertheless there are some symptoms which, being common in the commence- ment of variola, and not common at the beginning of continued fever, or of the other exanthemata, may assist the early diagnosis. Vomiting is one of these ; pain of the back another. When these symptoms are violent, they usually usher in a severe form of the disease. The same may be inferred from a continuance of the nausea and vomiting, after the coming out of the eruption ; which is very unusual. Heberden noticed that acute pain in the loins was almost always followed by a severe disorder ; that pain higher up, between the shoulders, was of better augury ; and that it was to be reckoned in all cases a good sign, if there was no pain of the back at all. Early delirium, stupor, or convulsions, announce severity in the subse- quent course of the malady. Yet not always, especially in children. W^ithin the last month I was asked to see a child which had been suddenly attacked with con- vulsions, followed by coma. In due time the eruption of variola appeared, and the aisease ran a mild course, with little aid from medicine, although the child was previously unprotected. The peculiar eruption almost always begins to show itself on the third day of the fever. The earlier it comes, the severer generally does the disorder prove. In judging of the date of the eruption, you must bear in mind that parents and servants are apt to state its accession to have been later than it was in reality : for the spots are at first so minute that they often escape observation. They also frequently begin Jio come out in the night ; and the morning of the second day of the eruption is called the first day. The eruption comes out first on the face, then on the neck and Avrists and on the trunk of the body, and lastly on the lower extremities. Such is the rule ; so that (as is specified in the definition) it does not cease to come out till the fifth day : and it keeps a-head, in that order, throughout the disease. There are, indeed, some exceptions to this rule. Occasionally the spots appear first upon the extremities, but this is very rare. In some instances straggling papulse continue to spring up after the main crop is fairly completed ; but these stragglers seldom arrive at the same size with the others. The pimples, or papulae, ripen gradually into pustules, the suppuration being complete by their eighth day ; and on that day the pustules generally begin to break, and crusts or scabs to form. In four or five days more, the scabs are falling off. There are some variations in all this, also. In children, the crusts are sometimes visible on the seventh day ; and in adults, when the disease is severe, they sometimes do not begin to form till the ninth day. In all cases, some of the pustules are hable to be prematurely broken, by accident, or by the patient's scratching ; and these will crust over earlier than they otherwise would have done. So that, in fijcing the period SMALL-POX. 977 of incrustation, you are to regard those pustules or^ly of which the ;ialural progress has not been interfered with. All that I have hitherto been saying, applies, with more or less exactness, to the disease in all its varieties. But its severity differs oicceedingly, as I have already hinted, in different cases. Its severity, in truth, is almost always in direct relation to the quantity of the eruption. The number of pustules indicates, in the first place, the quantity of the variolous poison which has been reproduced in the blood. In the second place, it is also a direct measure of the extent to which the skin suffers inflammation. Sometimes there are not more than half a dozen pustules ; some- times there are many thousands. If all these were collected into one, it would be an enormous phlegmon. For both these reasons, the system sufiijrs commotion, dis- tress and peril, in proportion to the quantity of the eruption. When the pustules are very many, they run together ; when they are ^ew, they are separate from each other. And this affords a broad line of distinction, which can neither be overlooked nor mistaken, between the variola discreta, and the variola confiuens. In the one, the pustules are distinct, and of a regularly circumscribed circular form. In the other they coalesce, and their common outline becomes irregular. Now, the discrete form of the disease is scarcely ever dangerous ; the confluent form is never free from danger. The distinction, therefore, is of the great- est importance and interest. For its full estimation, each form must be considered separately. In the discrete variety, in which the disorder may be presumed to run its most natural course, the eruption is at first, according to the phraseology of Willan, papu- lar. The pimples gradually increase in magnitude ; but it is not till the third day of their appearance that they begin to contain a little fluid on their summits. For two days after this they increase in breadth only, and a depression is observ- able in the centre of many of them. The cuticle is bound down there somehow, for a time, to the cutis vera. It is the eighth day of the disease, or ihejifth day of the eruption, before the pustules become perfectly turgid and hemispheroidal. During the time in which they are thus filling up, the face swells ; often to so great a degree that the eyelids are closed, and the natural aspect is completely changed or concealed. The skin between the pustules on the face assumes a damask-red colour. About the eighth day of the eruption, a dark spot makes its appearance on the top of each turgid pustule, and at that spot the cuticle breaks, a portion of the matter oozes out, and the pustule dries into a scab. When this crust at length falls off^ it leaves be- hind it either a purplish red stain, which is still very characteristic of the disease, and which very slowly fades ; or a depressed scar, which is indelible. In the latter case, the patient, or more properly his skin, is said to be pitted with the small-pox, or pock-marked. The swelling of the face begins gradually to diminish after the eruption has become thoroughly pustular. This is the course which the eruption pursues on the face, where the pustules, even in the discrete form of the disease, are usually thicker set than on any other part of the surface. And it pursues the same course, only two or three days later, upon the extremities, where it also begins later. The feet and hands swell just as the face swelled, but they begin to tumefy as the features begin to subside. Some of the pustules, especially on the extremities, do not burst at all, but shrivel up. In this, the distinct variety of the disorder, the fever generally ceases entirely upon the coming out of the eruption ; the headache, the pain of the back, the vomiting, the restlessness, abate and disappear ; the pulse resumes its natural force and fre- quency, and the skin its natural temperature. About the seventh or eighth day of the eruption there is commonly, for a day or two, a recurrence of fever. This is called the fever of maturation. You are to observe that we judge of the eruption as it appears on the yace. Th«^ disease is of the confluent kind, when the pustules are confluent there, whether thej be so or not upon the trunk and extremities. Sometimes they are neither strictlv confluent nor strictly separate, but stand just thick enough to touch each other, with- out absolutely coalescing; every pustule preserving its circular outline. In thai case, the disease is said to be of the cohering form. When the pustules are conflu- «3 4g3 978 SWALL-POX. ent over the whole bodj', their number is often prodigiously great, and their progress is less regular than in the discrete and milder variety of the complaint. In the first place, the eruptive fever itself is usually more violent and tumultuous m the confluent disease ; the disturbance of the sensorial functions is more common and more decided, the sickness more distressing, the pain of the back and loins more severe. The eruption comes out earlier, and more confusedly ; the pimples being at first very minute, and crowded together in patches, and not seldom accompanied by a rash like that of scarlet fever, or er}'sipelas : whereby the diagnosis, in so far as it depends upon the appearance of the skin, is rendered for a while uncertain. I have at present in the Middlesex Hospital a patient in whom the papulae of small- pox were, at the outset, so intermingled with the appearances and sensations of urti- caria, that I doubted, for twenty-four hours, what the true character of the eruption might be. It is sometimes like that of measles; but the similarity and the uncer- tainty are soon at an end, for the pimples soon begin to exhibit a fluid on their sum- raits. They do not, however, as they advance and pass into pustules, fill up so completely as in the distinct form ; they are flatter, less plump, more irregularly depressed, and even of a different colour ; being at first whitish, and then of a brow'n tint, and seldom of the yellow purulent hue which is seen in the variola discreta. Sometimes they are even bluish, or purple. In the confluent form there is commonly some abatement of the febrile distress upon the coming out of the eruption ; but the remission is much less marked than in the discrete. About the fifth or sixth day, fresh rigors are apt to occur, marking the fever of maturation. Most of these points of distinction between the two varieties of the disease are well marked in Cu lien's definitions. The distinct form he defines thus: " Variola (discreta) pustulis paucis, discretis, circumscriptione circularibus, turgidis ; febre, eruptione facta, protinus ces- sante." And of the confluent kind his definition is, "Variola (confluens) pustulia numerosis, confluentibus, circumscriptione irregularibus, flaccidis, parum elevatis; febre post eruptionem perstante." But the most important difference between the two forms is in what is called the secondary fever, which sets in about the eleventh day of the disease, or the eighth of the eruption, just when the maturation of the pustules is complete, and they begin to desiccate. This secondary fever is slightly marked in the distinct small-pox, and very intense and perilous in most instances of the confluent. It is at this period of the disorder, that death, in the fatal cases, oftenest occurs. Of 168 such cases, recorded by Dr. Gregorj', the deaths happened in tw^enty-seven (nearly one-sixth of the whole) upon the eighth day of the eruption. That, therefore, is the most perilous day, as the second is the most perilous iceek. Thirty-two died in the first week, ninety-nine in the second, twenty-one in the third. The early occurrence of death denotes a peculiar inalignancy in the disease. The nervous system appears to be overwhelmed by the force of the poison. During the second week the disorder proves fatal chiefly in the way of apnoea ; from some affection of the respiratory passages. After that period the characters of asthenia commonly predominate. The patient sinks under some casual complication, or the powers of life are gradually worn out by so much irritation of the surface, and so large an amount of suppuration. So much for the ordinary course of small-pox, and of the symptoms that are essen- tial to that disease. There are, however, other concomitant circumstances, with which you ought to be acquainted: and these I will endeavour to specify at our next assembling. LECTURE LXXXVII. iSinall-pox, continued. Inoculation. Vaccination. Their comparative advantages Treatment of Small-pox. In the last lecture I brought before you, in a rapid sketch, the ordinary course, hod th.e essential symptoms of small-pox ; both in its distinct and in its confluent SMALL-POX. , 979 form. I have yet to mention some other circumstances that are very frequently to be noticed in connection with that disease. Both kinds are accompanied by sore throat ; the tonsils and fauces are tumid and red : and with this sore throat there is associated, about the period when the face swells, sometimes in the discrete variety, and almost always in the confluent, more or less salivation, which lasts for several days. At first the discharge is thin and plentiful ; but, towards the period of maturation, it often becomes viscid and ropy, and is with difficulty got rid of by the patient. This salivation is of some importance as a prognostic symptom. If it cease abruptly, and especially if at the same time the swelling of the face suddenly and prematurely subside, the peril is great. Besides this, Sydenham regarded the ptyalism as a diagnostic circumstance ; as a mark which identified with true small-pox a fever called by him the variolous fever, the variolas sine variolis of De Haen and others. " The resemblance (says he) which this fever bore, in its symptoms, to small-pox, induced me to give it the title of variolous fever, which seemed indeed so much the more appropriate, as the fever raged at the same time with small-pox, and got well under the same treatment. The two diseases belonged evidently to one family, and there was no difference between them, saving that in small-pox the morbific matter was directed towards the skin, in the shape of an eruption ; while in the variolous fever this matter was expelled from the system by the salivary glands." Notwithstanding this statement, it is difficult to believe that any such disorder as variolse sine variolis ever proceeds from the contagion of small-pox. This affection of the salivary glands does not so often occur in children ; but diar- rhoea appears sometimes to take its place. The soreness of the fauces. often depends, in great measure, upon pustules there situate. You may see that the tongue, the roof of the mouth, the inside of the cheeks, the uvula, and the velum palati, are thickly studded with them. It is affirmed by some writers that the pustules of small-pox occur in various internal parts of the body, and especially upon the mucous membrane of the intestinal canal. I believe this to be a mistake. The enlarged solitary follicles often put on very much the appearance of pustules. Cotunnius, who has written a good book, De sedilms variolariim, asserts that pustules appear only upon the skin, and upon those parts of the mucous membranes which are freely exposed to the air. In one soli- tary instance he met with them in the trachea so low as its third ring. He fancied that previous desiccation of the part was necessary to their formation. He says that none appear on the cornea, while it is kept moist. He denies that they are seen in the interior of the body, or upon the fostus in utero : but in this last point he is cer- tainly wrong : and this is a strong objection to his theory. The most striking facts which he alleges in support of his opinion of the necessary presence of air — besides the fact of the eruption being more copious on parts usually exposed to the atmo- sphere, as the face and hands — are, that pustules do not form on the inner surface of the eyelids, except in cases of ect r opium ; that they appear on hemorrhoidal tumours only when these project beyond the margin of the anus ; and that that por- tion alone of the glans penis is ever affected by them which is uncovered by the prepuce. Dr. Gregory, however, states that true variolous pustules do not form upon the conjunctival membrane: and that the blindness of one or both eyes which is so com- mon a result of small-pox, especially in children, is produced by an intense kind of ophthalmia, which sets in at the period of the secondary fever, and rapidly involves and spoils the transparent tissues of the organ. During the period of maturation, a peculiar greasy, disagreeable odour, quite sui generis, proceeds from the body of the patient. If taken into the sick chamber blind- folded, one might name the disease at once by this smell. About the same time also many patients are tormented by itching of the surface ; so that they are provoked to scratch oft' the heads of the pustules : and by so doing they often ensure the formation of pits. In many cases of confluent small-pox this itching appears to constitute the chief part of the patient's suffering. There are various troublesome complications to which, in severe cases of the con 980 SMALL-POX. fluent form, the patients are liable during the secondary fever; erysipelatous inflam- mation involving the subcwtaneous areolar tissue in various parts of the body, and leading to the formation of abscesses; glandular swellings in the groins and axilla;, going on sometimes to suppuration; sloughing sores on the hips and sacrum; phlebitis ; and in two or three instances I have seen the large joints, after death, full of matter. One of the most serious symptoms, at this period of the disease, is dyspnoea. The air-passages, and especially the larynx, become clogged by viscid mucus, the arterialization of the blood is interfered with, and the patient is in danger of suffocation. Occasionally life is suddenly extinguished by oedema of the glottis, supervening upon that affection of the fauces which I mentioned just noAV. In one most fearful phase of this always formidable disorder, symptoms indicative of what is called the putrid diathesis manifest themselves — petechise, vibices, hemor- rhages from various parts of the body. The pustules, instead of being plump and yellow, are flat, red, purple, or blue ; that is, they contain blood, or a sanious ichor, in the place of pus, constituting the variolse nigrx of Sydenham, the bloody small- pox of Mead. I believe that these appearances augur in all cases a fatal result. Hemorrhage from the uterus is not uncommon ; and in pregnant women abortion, and then, most commonly, death. Heberden says that he examined, in many in- stances, the fcstuses so parted with, but never could perceive upon them any traces of small-pox. His experience, therefore, agreed with that of Cotunnius ; and we may conclude that infection of the foetus in utero is very rare. Yet, unquestionably, it sometimes happens ; and the circumstances under which it has been noticed are various and interesting. In one instance, related by Mr. Flinders, the disorder was eight or ten days later in the foetus than in the mother. A woman, near her full time, took small-pox. The pustules were mature about the 10th or 11th of June, On the 18th she gave birth to a full-grown boy, upon whose face and body there were many pustules, discrete, and nearly ripe. The child died the same iiight. It is a very curious fact that the foetus has caught the disorder, doubtless through the medium of the mother, although she, having had it previously, was unaffected by the contagion. Dr. Mead relates that "a certain woman, who had formerly had the small-pox, and was now near her reckoning, attended her husband in this distemper. She went her full time, and was dehvered of a dead child. It may be needless to add, that she did not catch it on this occasion ; but the dead body of the infant was a horrid sight, being covered all over with pustules." In the first volume of the Medico-Chirurgical Transactions, Dr. Jenner gives an account of an infant which, upon the fifth day of its age, became indisposed, and on the seventh exhibited the eruption of small-pox ; so that the contagion must have been communicated to it while yet in the womb. A few days before her confinement the mother of this child had seen, in the street, a person covered with small-pox pustules, the smell and sight of whose body had sensibly affected her. I see no reason, therefore, for doubting that the unborn being may pass safely through the disease while in the womb, and derive from that attack the customary immunity for the future. My namesake. Sir William Watson, describes in the Philosophical Transactions, an instance in which the scars left by the pustules were visible upon an infant at its birth. The child was afterwards inoculated without taking the disease. Its mother, who had formerly had it, nursed, when far advanced in pregnancy, a servant ill of small-pox. Dr. Pearson met with a similar example. Mary Spooner was inoculated by him in her sixth month of utero-gestation, and had the disease severely. Her child was twice inocu- lated with small-pox matter, but without effect. Like all these contagious exanthemata, small-pox has its periods of dormancy and of activity. Every now and then, at irregular intervals — and, as it would seem to our ignorance of the cause, capriciously — it overspreads a district or country as an epidemic. At this moment (1838) it is more prevalent in London, and in many parts of England, than it has been known to be for many years past. W'hen epi- demic, it is also, in general, more than ordinarily severe ; although different epidemics vary much in that respect. There is no contagion so strong and sure as that of small-pox : none that operates at so great a distance. Dr. Haygarth states, "that during his long attention to this SMALL-POX. 981 subject, not a single instance had occurred to prove that persons liable to the small- pox could associate in the same chamber with a patient in the distemper, without re- ceiving the infection." It is readily communicable in every way ; by inoculation, by breathing a contaminated atmosphere, by the contact or vicinity of fomites. Naj^ it may be caught from the dead body. Mr. Ctesar Hawkins has recorded an interesting example of this. The body of a man who died of small-pox, was brought into his dissecting room in Windmill street; and four students took the disease from that source. Of these, one only had touched the body. There is one appearance which I think curious, although, perhaps, it has not any great practical interest ; and which I omitted to notice in the last lecture, when de- scribing the course of the eruption. Without going minutely into the anatomy of the pustules, you may distinctly see, if you closely examine them when they are about five or six days old — you may see, at least, in many of them — two colours, viz., a central whitish disc of lymph, set in, or surrounded by, a circle of yellower puriform matter. In truth, there is, in the centre, a vesicle, which is distinct from the pus. You may puncture the vesicle, and empty it of its contents, without letting out any of the pus ; or you may puncture the part containing the pus, and let thai out, without evacuating the contents of the vesicle. The vesicles have even, by careful dissection, been taken out entire ; and they are said to consist of several little cells. It is most probable that the lymph contained in this separate vesicle is the purest part of the variolous poison. Before I say anything of the measures to be adopted during the progress of small- pox, I have to bring under your notice two expedients of still greater interest and importance ; the one of them contemplating a mitigation of the disorder, the other its total prevention. You anticipate that I am about to speak of inoculated smali-pox in the first instance, and of the vaccine disease in the second. I have many times stated, and all the world knows, that small-pox maybe imparted to a healthy person by inserting beneath his cuticle a minute quantity of the matter taken from a variolous pustule. This, perhaps, is not very surprising; but it is sur- prising that the disease, so received, should be much milder than if it had been con- tracted in what is called " the natural way," by breathing an atmosphere charged with the contagious poison. Why it should be so it is difficult to conjecture. The fact is sometimes expressed by saying that the disease is milder when the virus is admitted through the cutaneous, than when through the mucous tissues. But I am not at all sure that the hypothesis involved in this proposition is true. No attempts have been made, that I know of, to introduce the poison artificially through a wound in any mucous surface. I should rather guess that the small quantity of the poison conveyed by inoculation into the blood may make the difTerence. But whatever the explanation, the fact is unquestionable, and obviously of the highest importance. By what accident it was first learned (for it evidently could not have been reasoned out) we do not know. The Chinese claim to have been in the habit, for many centuries, of sowing the disorder, by putting some of the crusts into the nostrils. But this is a different thing from inoculation, the surface being entire, and the effluvia from the crusts being drawn into the lungs by the act of inspiration. It is said that a true engrafting of the virus has been in use by the Brahmins in India, time out of mind. It certainly was practised in Turkey at the very beginning of the last century, and perhaps somewhat earlier. In 1713, Dr. Emanuel Timoni, an Oxford graduate,' who had settled at Constantinople, wrote to Dr. Woodward, in London, giving him an account of the new process, and testifying to its success. This account was com- municated to the Royal Society, and published in its Transactions the following year. In 1715, Mr. Kennedy, an English surgeon who had travelled in Turkey, gave similar information to the English public in his Essay on External Remedies. And in the Philosop/iical Transactions for 1716 you may see a notice of the same pro- cess, as described by M.Pylarini, the Venetian consul at Smyrna. But these stare- ments were neglected, or had no practical result. We owe the actual introduction of the practice of inoculation into Great Britain to the good sense and courage of an English lady, whose lively epistles have taken their permanent place in our country's literature. Lady Mary Worlley Montagu, the wife of our ambassador at the OttO' 982 SMALL-POX. man Court, writes thus, from Adrianople, in the year 1718: "The small-pox, so fatai and so general amongst us, is here entirely harmless by the invention oi engraftino;, which is the term they give it. Every year thousands undergo the operation ; and the French ambassador sayc, pleasantly, that the}' take the small-pox here by way of diversion, as they take the waters in other countries. There is no example of any one who has died in it ; and 3'ou may believe I am well satisfied of the safety of this experiment, since I intend to try it on my dear little son. I am patriot enough to take pains to bring this useful invention into fashion in England." In fact, she re- commended it by her own example. The first person inoculated with small-pox in England was her daughter. Then a child of a physician. Dr. Keith, who had visited Miss Wortley ; afterwards some condemned felons, who were pardoned on condition of their submitting to the experiment ; and at length some of the royal family. But the practice was not thoroughly established, nor properly appreciated, by the English public, until the middle of that century. Its efficacy in mitigating the severity and danger of the disease, in saving life and preventing deformity, was signally great. The mortality in the natural small-pox was estimated at one in five. But Baron Dimsdale, a great inoculator, declared that not one in fifteen hundred died of the engrafted disease. Two brothers, named Sutton, who had introduced, or rather revived, a very improved method of treating the disorder, professed to have inoculated 20,000 persons without fairly losing one. But these, doubtless, were exaggerated statements. Among 5964 individuals, inocu- lated at the Small-pox Hospital in 1797, 1798, and 1799, there were nine deaths; », e., one in six hundred and sixty-two. We may take Dr. Gregory's estimate of one death in five hundred cases, as being probably within the mark. In the inoculated disease the period of incubation is comparatively short; the pus- tules are seldom numerous, and still more seldom confluent; and the secondary fever is generally slight or awanting, I may mention here, also, that the eruption is not unfrequently preceded by a rash, something like that of scarlet fever, and called by Willan the roseola variolosa. It fades in the course of a day or two, and then the small-pox pustules are seen emerging just in the same state that they would have been in, at the same period, if no such rash had appeared. The efflorescence happens oftener in the inoculated than in the casual disease. In the former it is looked upon as rather a favourable sign ; in the latter, especially if the rash be of a dark red colour, it is considered un- favourable, and as the herald of a severe confluent disorder, A far superior expedient has since been discovered, in the practice of vaccination, which has rendered the inoculation of small-pox not merely unnecessary, but, in most cases, perfectly unjustifiable. Yet circumstances do sometimes arise, even now, in which it may be allowable and right to engraft the matter of small-pox ; as when an unprotected person is unavoidably exposed, or has recently been exposed, to the contagion of that disease, and there is no vaccine matter at hand. The advantage of inoculating in such a case is, that the inoculated or milder form gets the start of the natural and severer; the fever commencing sooner than it would otherwise do. To show you the value of the practice in such cases, and the degree of protection which it aflbrds to individuals whom we cannot vaccinate, I may mention a fact which Professor Gregory, of Edinburgh, was in the habit of relating, and which "vas told him by a naval surgeon. The small-pox was introduced among the crew «)f a man-of-war, in a tropical climate, where no vaccine matter was to be procured. The men were almost all unprotected. Sixteen of them took the disease in the natural way; and of these, nine, or more than one-half, died. Of 303 who were inoculated, under the disadvantages of a hot climate, and no preparation, not one perished. That a disorder communicated to the human animal from one of the brutes should protect the former aaainst the contagion of small-pox, is one of the most interesting ^acls in the Avhole history of medicine. How glimpses of a truth so remarkable were first revealed to the casual observation of certain peasants, and how the result of this chance observation was gradually " matured into a rational and scientific form bv a mind deeply imbued with the best principles of sound philosophy," I have not VACCINATION. 983 leisure to tell you in detail. And it is the less necessary that I should do so, as you may find the whole subject thoroughly naiTattd and discussed by Dr. Baron, in his interesting biography of Edward Jenner. Dr. Jenner found among the great dairy farms in Gloucestershire a popular belief that no person who had had the cow-pox (an eruptive vesicular complaint communi- cated from the udder of the cow to the hands of the milkers) could " take the small- pox." Satisfied, by inoculating with small-pox matter several individuals who had had the vaccine eruption, that this was not an unfounded notion, he at length con- ceived the great and happy idea of propagating the cow-pox from one human being to another, and so preventing, in all cases, the perilous distemper of small-pox, which he hoped might thus be finally expelled from the earth. By degrees. Dr. Jenner ascertained that some persons, who had had sore hands from milking, were not thereby rendered proof against the contagion of small-pox; but this difBculty was soon cleared up by the discovery that the teats of cows were liable to different kinds of eruption, and he learned, by close observation, which of these was the peculiar eruption that produced in the human frame the protecting disorder. Dr. Jenner set himself to trace, if possible, the origin of the disease of the cow. First, he found that it was peculiar to certain dairies; then, that in those dairies men were employed in milking. Following up this clue, he further made out that those men had also the charge of the farm-horses. Next, he learned that the teats of the cows generally began to exhibit the specific eruption at that time of the year when a complaint called " the grease" chiefly prevailed among the horses. Hence he concluded, that the malady was conveyed "to the cows by the hands of the men who had been dressing the heels of horses affected with the grease. Subsequent inquiries have, however, shown that this conclusion was not strictly correct. Another difficulty which lay in Dr. Jenner's way, and which his patience and sagacity surmounted, was this. He found that some who were casually infected from the true complaint in the cow were not protected. This depended, as he afterwards ascertained, upon the period of the disease in the cow, at which the virus was com- municated to the milker. The thick matter proceeding from the vesicle late in its progress produced indeed a severer local sore than the thinner matter of its earlier state, but it did not confer the desired protection. The same thing is observed in respect to small-pox. If the matter used for inoculating be taken from a fully matured pustule, it does not so surely excite the disease as when taken from a more crude one. The next important step in this most interesting investigation was to determine whether the vaccine disease could be transmitted, by engrafting from one human being to another, and whether, if so transmitted, it retained its protecting power. The 14th of May, 1796, was the birth-day of vaccination. On that day, " matter was taken from the hand of Sarah Nelmes, who had been infected by her master's cows, and inserted by two superficial incisions into the arms of James Phipps, a healthy boy of about eight years old. He went through the disease apparently in a regular and satisfactory manner; but the most agitating part of the trial still remained to be performed. It was needful to ascertain whether he was secure from the contagion of small-pox. This point, so full of anxiety to Dr. Jenner, was fairly put to issue on the 1st of the following July. Variolous matter, immediately taken from a pustule, was carefully inserted by several incisions — but no disease followed." It is scarcely necessary for me to notice the objections which were made to the practice of vaccination. Some of them were merely foolish — as, that it was unna- tural and impious to engraft the diseases of a brute upon a Christian. Others were untrue — as, that it introduced into the system new disorders, distinct from the cow- pox. It triumphed over all these cavils ; and in six years from its first promulgation the discovery was known in every region of the world. It was soon found, however, that some, who had apparently had the cow-pox by inoculation, were nevertheless not incapable of taking the small-pox ; and that these failures were, many of them at least, attributable to the mistakes that were made in 984 VACCINATION. the time or manner of performing the operation. It became necessary, therefore, to ascertain precisely the conditions requisite for the production of the genuine disease. And these conditions have been successfully investigated by Dr. Jennerand by sub- sequent surveyors. You will learn to recognize the true vaccine vesicle only by repeatedly examining it for yourselves. Yet a brief description of its characters and progressive changes may be useful to you. On the second or third day after the insertion of the vaccine matter into the arm, the punctures look red and inflamed, and on the fourth or fifth day the vesicle becomes perceptible ; a pearl-coloured elevation of the cuticle enclosing a minute quantity of a thin transparent liquid. It gradually increases in magnitude till the eighth day, when it should measure from a quarter to half an inch across. Like the pustule of small-pox, it is more prominent at its circumference than at its centre, and it consists of small cells, from ten to fourteen in number. By puncturing carefully one of these cells, a drop of the virus may be let out, the other cells remaining full. Up to the seventh, or eighth, or even to the beginning of the ninth day, the inflammation around the vesicle should extend to only a very small distance from it. After this, it spreads, and what is called the areola is formed ; a circular red border, which continues to increase during the ninth and tenth daj^s, and begins to fade on the eleventh, passing through shades of blue as it dechnes, and leaving a degree of hardness behind for two or three days more. By this time, a brown or mahogany-coloured crust has formed over the vesicle, of a nearly circular shape; this becomes gradually harder and darker, and finally detaches itself about the twentieth day. The cicatrix which it leaves should be somewhat less than an inch broad, circular, slightly depressed, marked by radiating lines, and dotted with little pits which seem to correspond to the cells of the vesicle. About the eighth day there is usually some slight febrile excitement manifested, which soon subsides. This is analogous to the secondary fever of cimall-pox : and it appears to furnish the condition of the desired protection. Of course it is of much moment to determine whether the cow-pox has run its proper course or not ; and it is not always easy to say how far the progress of the vesicle may deviate from that which has just been described, without failing of its protecting influence. A very ingenious teat of this, free from all ambiguit}% has been devised by Mr. Bryce. His plan is this. He vaccinates the other arm, or some other part of the body, four or five days after the first vaccination. If the con- stitution has been properly affected by the first operation, the inflammation of the second vesicle will proceed so much more rapidly than usual, that it will be at its height, and will decline and disappear as early as that of the first: only the vesicle and its areola will be smaller. In fact, from the time of the formation of the areola, the second vesicle is an exact miniature of the first. If the system has not been duly influenced by the first vesicle, the second will run its own course, increasing up to its eighth day, and so on. Should this be the case, the second vesicle should be tested by a third. We find the germ of this criterion in the early history of vaccination. Dr. Jenner vaccinated the children of his friend Mr. Hicks, the first gentleman who consented to adopt the practice. This Mr. Hicks became afterwards an expert vaccinator him- self, and it was his custom, in a doubtful case, to perform a second vaccination in a few days after the first : and he remarked that the second vesicle made " immense strides to overtake the first." After some time it became apparent that Dr. Tenner's estimate of the protecting power of the vaccine disease had been set too high. He had hoped and believed, as others also had, that the cow-pox would in all cases prove a perfect and permanent protection against the small-pox ; but those hopes have been disappomted. Doubt- less complete protection is the rule ; but — how thoroughly and regularly soever the vaccine malady may have proceeded — it is most certain that very many exceptions 1.0 tins rule have taken place, and are daily taking place around us. And this fact, which has become too glaring to be denied or explained away, has flepreciated the value of the process of vaccination, in the public esteem, far moie SMALL-POX. 985 than, if rightly considered, it should have done. For it is a remarkable and most important truth that the disease which, in some duly vaccinated persons, follows ex- posure to the contagion of small-pox, is much milder and shorter even than the inoculated, and a forliori, than the natural smalt-pox. The disorder thus occurring is, therefore, denominated the varioloid disease, or (more conveniently, in my opinion), the modijied small-pox. The constitutional symptoms of this modified disease are, in general, at the outset, and for several days, much the same with those of the regular small-pox. The eruptive fever is of equal length and intensity. There are frequently much head- ache, and sickness, and sometimes even delirium. The eruption begins about the third day ; it is often copious, and sometimes confluent ; and in the confluent cases the eruptive fever does not entirely subside as soon as the crop of pimples has come out. It is in its subsequent progress that the complaint is modified : in respect both to the appearances presented by the skin, and to the constitutional symptoms. Three distinct kinds of eruption have been observed — 1. The eruption sometimes approaches in its character and course very nearly to that of the ordinary small-pox. The pustules fill up, have the central depression, and ultimately crust over, and the face swells. But this course is performed in a shorter time than that of the ordinary disease, and the pustules are usually smaller. This is the severest and the least common form of the modified small-pox. 2. Sometimes the papulae show a little fluid on their tops only, but never fairly suppurate nor break ; but the vesicles dry up, and hard prominences, with livid bases and horny summits, remain. 3. There are other cases in which a great part of the eruption consists of red pimples, which soon become livid, but contain from first to last, no fluid whatever. In the majority of instances of modified small-pox, all these forms of eruption co- exist. Some of the papulae go on to suppuration, others become crowned with a horny summit, and others never exhibit any fluid at all. Bnt the most important characteristic of the modified disease, is the total absence of secondary fever. The constitutional disturbance which, for the first week, may have been as severe as in the ordinary small-pox, generally subsides entirely when the eruption has reached its acme. The patient is convalescent just when, in the unchecked and regular form of the malady, his danger is beginning to be most urgent. These two circumstances, then — the short duration of the eruption, and especially the absence of secondary fever — furnish the broad distinctions between the regular and the modified small-pox : and almost always, when vaccination has been tho- roughly effected, and small-pox occurs afterwards, it occurs in this modified form ; and the modified form of small-pox is seldom fatal, though some instances of death resulting from it have certainly happened. Several questions of the greatest practical moment and interest here present them- selves: but it is impossible that T should discuss them. I will state some of them, however, that you may bear them in mind in your future opportunities of observa- tion ; especially as they are yet, for the most part, undecided questions ; and ques- tions which can be answered only after repeated and careful observation. The first is, whether the protecting influence of cow-pox upon the human frame diminishes by lapse of time, and at length wears out. There seems reason for sus- pecting that such may, sometimes at least, be the case. Certainly in many, but not in all, of those who have gone through the vaccine disease, revaccination at a distant period reproduces, in a greater or less degree, its primary effects. A friend of mine, who was vaccinated in 179!), has a son nine or ten years old, who was vaccinated at the age of three weeks. Both of them have lately been revaccinated. Tht- boy was somewhat afl^ected by the renewal of the operation ; the father not at all. It yet remains to be determined whether all those who are susceptible of some impression from a second vaccination, are liable to be affected by the contagion of small-pox: and whether a repetition of the operation of engrafting the cow-pox renews, or adds to, their security against small-pox. At any rate, the practice of revaccination is p. 4h 986 SMALL-POX. safe and advisable precaution. Dr. Gregory says of it, " we have sufficient facts before us to state with confidence that it need never be recommended prior to the tenth year of life ; and that the age best fitted for it is from the period of puberty to that of confirmed manhood." But, secondly, is there any ground for supposing that the wished-for protection ever fails to be conferred, because the operation is performed too early ? It has been suspected that it is less likely to produce the requisite, or an enduring, effect upon the constitution when it is done while the child is at the breast. But most children are vaccinated within that period. We know that this is a time when they are but little susceptible of contagious disorders in general. If this suspicion be well-founded, Dr. Gregory's first proposition requires correction. A third question is, how far the frequent failure, in late years, of complete protec- tion can be ascribed to the circumstance that the vaccine virus has been repeatedly transmitted from one human being to another, and its supply thus kept up, without any fresh recurrence to the cow, the original source of the disorder. Dr. Jenner was, himself, not without apprehension that this might prove a cause of failure. But the analogy of other animal poisons supplies no warrant for such a belief. For one year I had a seat, as the Senior Censor of the College of Physicians, at the National Vac- cine Board, and I then had opportunities of satisfying myself that lymph which had been transmitted without interruption from person to person ever since the time of Jenner, continued to generate as perfect a cow-pox vesicle as at first. If, as Dr. Heim asserts, there are no less than five kinds of spurious cow-pox^ all communicable by inoculation from the teats of the animal to the human body, I cannot help thinking that recourse should not be had rashi}' or needlessly to lymph recently obtained from the cow. In the fourth place there are yet moot points, respecting the number of vesicles, and the degree of constitutional disturbance, which are requisite to ensure, and to prolong, the protective power of vaccination. The constitutional effect will bear some proportion to the number of vesicles ; and of these, it would seem, there should be several ; and one or two of them, at least, should be suffered to pursue their entire course untouched. With regard to a fifth question, the most important of all, we may speak very de- cidedly ; and it is a question concerning which it is of the utmost consequence that medical men should form, and disseminate among the public, correct opinions : 1 allude to the comparative merits and advantages of inoculation with smcdl-pox and vaccination. The advantages of the practice of inoculation to the individual, supposing him doomed to have small-pox, were great and obvious ; to the community at large they were very doubtful. It gave the undoomed individual, for certain, an ugly disease, which was comparatively free from danger, in exchange for the chances, on the one hand, of contracting a very hazardous form, and on the other, of escaping altogether from any form, of variola. We need not inquire which is the most eligible branch of this alternative ; we know which was by most men actually chosen. But the practice of inoculation, by carrying the virus and the disease into every village throucrhout the length and breadth of the land, filled the country with contagion; ensured the disease to all who were subjected to the operation; and diminished to all who were not, the chances of escaping it. No doubt the distemper was produced artificially in many more persons than would have caught it naturally, had inoculation never been thought of. So that while the relative mortality, the per centage of deaths from small-pox, was lessened by this practice, the absolute mortality was fearfully increased. Such at least is the judgment expressed by most who have thought and written on the subject. Dr. Heberden compared the number of deaths ascribed in the London bills of mortality to small-pox during the first thirty years of the last century, and he found that they had increased from 7*4 per cent, to 9-5 per cent. To be sure, some allowance must be made for the increase in the whole population of London during that interval ; but on the other hand we must take into account the deaths (not noted in those bills) which followed the inoculation of small- pox in secluded villages, where but for that practice, the poison might seldom have I SMALL-PCX. 987 been found. It is right, I say, that this matter should be steadily contemplated, in all its lights, and in all its shadows, in order that the inestimable blessing conferred upon mankind by the researches of Dr. Jenner may be fairly set forth, and adequately appreciated. The vaccine virus produces a shght disorder, which is attended with no risk, and which (unluckily I may say) is not communicable except by direct en- grafting. It not only does not disseminate a dangerous and deadly poison, but if rightly used, it affords the means of eradicating from a well-regulated community, or at least of confining within narrower limits, the most loathsome pestilence which the world has known. Where vaccination is, the contagion of small-pox need never come. In Denmark, as I told you, variola had at one time disappeared before the defensive influence of compelled vaccination. Chance, and a careless security, en- gendered by the absence of the pest, have led to its re-introduction there. It is much to be regretted that the boasted liberty of this countr}'" renders it almost impossible to enforce by law a practice which would be so conducive to the public weal. Some good might be done by enacting that no person should be eligible to even any paro- chial office of trust or profit who could not produce a certificate that he had been duly vaccinated. And the benefits which this safeguard confers on the individual are scarcely inferior to those which it is calculated to bestow upon society. It un- fortunately does not give complete protection against small-pox to all, but it gives complete protection to many. And you must recollect that small-pox itself is not a universal and absolute assurance against its own return. But the cow-pox relieves all from the necessity, imposed by inoculation, of coming within the sphere of the variolous contagion. It renders many, I repeat, impregnable to that poison, if they do chance to be within its range ; and its advantage to the comparative few who suffer the double misfortune of being exposed to the contagion of small-pox, and of being affected by it, is this, that it gives safety, though not exemption ; that it takes away the sting and peril of the variolous disease, by curtailing it of the secondary fever. At the very worst, it leaves the individual liable, by a twofold ill luck, to contract a form of small-pox less dangerous than that which he would voluntarily accept by submitting to the operation of inoculation,* It is difficult to adduce exact numerical comparisons in illustration of this reason ing ; but I may quote two short series of facts as samples. During an epidemic in Scotland, Dr. John Thomson saw from June, ISIS, to De- cember, 1819, 550 cases. Of these 205 had previously had neither small-pox nor cow-pox, and 50 of them died ; nearly 1 in 4. Forty-one took the small-pox for the second time, and Dr. Thomson knew of 30 other such cases, making 71 in all, whereof 3 died ; or 1 in 23. Three hundred and ten had been previously vaccinated, and among these there was but one death. The population of Marseilles at the time of an epidemic there, in 1S28, was esti- mated at 40,000; that is to say, of 30,000 vaccinated, 2000 variolated, and 8000 unprotected. Among the 30,000 vaccinated, about 2000 were attacked with small- pox, and 20 perished; 1, namely, in 100. Of the 8000 unprotected, 4000 were attacked ; and 1000, or 1 in every 4, died. And out of the 2000 variolated, 20 took the disease a second time, and 4 died ; or 1 in 5. There yet remains a highly interesting, but a less practical question. Dr. Jenner, as I stated before, believed that he had traced the cow-pox to its origin in the heels of the horse afflicted with the grease. It has since been made out that the disease which, in the horse, corresponds with and produces the specific malady of the cow, is a vesicular eruption, having no necessary connection with the grease, but extend- ing sometimes all over tlie animal's body. Now the question is, whether these two disteinpers, occurring in the cow and in the horse, are identical in their essence and nature with the small-pox of man. If so (as Dr. Jenner believed, and Dr. Baron strongly maintains), a part of the mystery attending the whole subject vanishes. The . protection furnished by the cow-pox resolves itself into the more familiar law, *[Tlie accuracy of this latter statement is contravened by statistical results, derived from -foment epidemics of small-pox in this country. But neither the tendency, nor the foice of ibie main argument, is much affected by this admission. — C.] 988 SMALL-POX. that certain diseases engendered by animal poisons, happen to the same individual out once, and shield the body against their own recurrence. In conformity with this theory, Dr. Baron names the disorders respectively, variolee, variolse vaccinae, and variolfe equinfe. The notion, you see, is this, that the vaccine disease is in truth small-pox, rendered mild by passing through the system of the cow. The great object of inoculating the small-pox is to produce a benignant form of that disease, by diminishing the number of pustules. The cow-pox diminishes the number to one; and while it reduces the severity of the disorder to a minimum, it absolutely takes away its j)ower of propagating itself, except by a direct engrafting of the visible virus. The disease is not sufficiently intense to taint the air with poisonous effluvia. At the same time it affords (but less surely and less permanently) the customary protec- tion. Such is the theory, which is intelligible and plausible, and supported by strong facts and persuasive reasoning ; for all which I must needs refer you to Dr. Baron's book. To avoid breaking the thread which connects the different parts of the main subject, I have postponed to the last what I have to say respecting the treatment of small-pox. ' This, for a long time, was conducted upon an erroneous principle, and eminently disastrous. The older physicians attempted to force out, through the skin, the mor- bid matter existing in the blood. The eruption they considered to be the natural and only cure: and adopting the vulgar maxim, that "it was better out than in," they did all they could to promote a copious eruption, by a hot regimen, by covering the patient with bed-clothes, by keeping the doors and windows jealously closed, and excluding every breath of fresh air, and sometimes by administering wine and cor- dials. The celebrated John of Gaddesden, the author of that curious book, the Rosa Anglica, improved even upon this. He surrounded the half-suffocated patient with red curtains, red walls, red furniture of all kinds : everything he saw was to be red ; for in that colour there was, he pretended, a peculiar virtue. This John of Gaddes- den, by the way, was a very sad knave, and the first Englishman, I believe, who had the luck to be made court physician. He had one medicine so good as to be fit for the rich only; and he recommended a double dose for the wealthy. "Duplum sit, si pro divite." He flourished in the fourteenth century. Sydenham was the first, in this country, to employ the opposite or cool regimen in small-pox ; and although his prejudiced cotemporaries refused to follow his exam- ple, and adopt his practice, he confidently predicted its final triumph — " obtinebit demum me vita functo." But it was subsequently to the introduction of the method of inoculation that the rooling treatment was fairly established, by the Suttons — two brothers, one of whom, Robert, lived at Bury St. Edmunds ; the other, Daniel, at Ingateslone, in Essex. These men, wiser in their generation than the regular physicians, had the good sense to pursue the same plan of general management which had been so prosperous in the East, whence the practice of engrafting was originally imported. Daniel, in particular, became famous for his successful inoculations : and the great secret of his success seems to have consisted in his making one puncture only ; exposing his patients much and often to a cool atmosphere ; supplying them freely with refrigerant drinks ; and restricting them to a spare diet. Under this course, Cullen, who adopted it from the Suttons, declares that ninety-nine times in the hundred, inoculation imparts a distinct small-pox, and very generally of the mildest form. Now the same principle applies to the casual disease when we have reason to suspect that it is impending, or to have the opportunity of treating it at its commence- ment. The object is to prevent, if possible, a copious eruption ; upon which, as we have seen, the severity and peril of the disorder entirely depend. It has been thought that venesection, by its antiphlogistic power, and, perhaps, by letting out, with the blo^^G, some portion of the regenerated virus, might lessen the number of the forth- coming pustules. But you cannot ensure this effect by blood-letting : and you mUol bear in mind that, should the eruption prove confluent, suppuration, to a large amount. SMALL-POX. 989 is inevitable, and — like that of an extensive bum — will require in order to go on favourably, a certain degree of constitutional vigour. You may abate the force of the eruptive fever, and keep down, it is believed, the number of pustules, by saline purgatives, so exhibited as to produce two or three loose stools every day, and by free ventilation of the surface of the body. The skia may even be sponged with tepid water, if the temperature be very high. When the eruption is all come out, if the pimples on the face be very few and distinct, the danger is over, and there is no more to be done. At this period Cullen dissuades the further use of purgatives, as being sometimes hurtful. But if the pimples on the face be many, and confluent, the patient will still re- quire a great deal of attention. Our business is to look out for, and to meet, unto- ward symptoms. About the eighth or ninth day, wakefulness, and restlessness, and sometimes tre- mors, are apt to come on ; and the proper remedies for this set of symptoms, in small- pox as well f.s in continued fever, are opiates. In variola, when given in full doses at bed-time, their good effects are often very conspicuous the next day. If the maturation of the pustules should proceed tardily, if they should not fill up properly, nor their contents become purulent, then strong broths may be of use, or even wine. But the effects of these must be carefully watched, and their amount adjusted to the necessities of the case. When the pustules are livid, and intermixed with petechia, and typhoid symp- toms occur, the disorder generally proves fatal. In such cases it is customary to pre' scribe bark and acids, in addition to the wine and opiates. The proper plan of managing the patient during the continuance of the secondary fever, is to keep his bowels moderately open by gentle laxatives, or by enemata ; and to give opiates once or twice a day. These are the more necessary on account of the irritation of the skin. The cooling regimen must now be given up ; and the strength must be supported by a nourishing diet. Wine and cordials are indicated if the pulse be feeble ; but the swelling of the hands and wrists often makes it diffi- cult to feel the pulse. Various external applications have been tried, with the view of relieving the into- lerable itching : which often induces the patients to scratch and tear their faces, and to ensure the formation of scars. Cold cream is used for this purpose : or a solution of common salt, applied lukewarm ; or a liniment composed of equal parts of olive oil and lime-water. This may be smeared, from time to time, over the itching sur- face, by means of a soft camel's hair pencil. The dj'spncea which sometimes comes on late in the disease, is a very ugly symptom. I know of nothing that can be done for it beyond blistering the throat and chest. [The following presents a very fair exposition of the views of a large portion of the phy- sicians of the Continent of Europe in relation to the protective powers of vaccination. It is the substance of a report made to the Academy of Sciences of France, on the 25th of February, 1845, by the Committee on Vaccination, to which were referred the various essays sent in by the competitors for the prize proposed by the Academy for the most satisfactory solution of the following questions: — • \. Is the preservative power of vaccination absolute, or merely temporary? If it is tem- porary only, determine, by accurate experiments and authentic facts, what is the period for which the vaccine matter exerts its protective influence against small-pox? 2. Has vaccine matter, taken directly from the cow, a more certain and durable protective power than vac- cine matter transmitted a greater or lesser number of times through the human subject? 3. If the protective power of vaccine matter becomes enfeebled, should it be renewed ; and if so, how? 4. Is it necessary to vaccinate the same individual several times, and if so, after how many years should the vaccination be repeated ? The portion of the report of which the following is an abstract, relates to the first two questions only. The protecting power of vaccination being definitely established, the question arises — is it possible, after forty-five years' experience, to determine the limits of that power ? Ths answer to this question is extremely difiicult, as it embraces inquiries not in France alone, but throughout the whole world : in fact, a general investigation of every case in which vac- cination had been formed could alone supply the fundamental elements of the problem to be answered. The competitors for the prize have particularly examined how vaccinated per 4 II 2 990 SMALL-POX. sons are circiiinstaneed during the prevalence of epidemic small-pox; in other words, what is the proportinn of vaccinated persons in the entire nun:ber of those attacked with small- pox. The protective power of vaccination is, by this mode of investigation, reduced to a numerical question. An attentive examination of what occurred during thirty epidemics of small-pox in France, shows two important facts: — First, that somewhat more than one-third of the entire number of persons attacked with the small-pox had been vaccinated; secondly, tliat the mortality among the vaccinated persons was very small. According to the author of one of the memoirs, more than one-third of those attacked in the epidemics which occurred at Montbeillard had been vaccinated, but there was no corresponding increase in the amount of mortality amongst the vaccinated patients ; and the same result was observed in the epi- demic of 1828, at Marseilles. The same results follow, also, from an examination of the epidemics that have occurred in England, Sweden, Denmark, Italy, IMalta, Geneva, &c. The fact, then, being established, that vaccinated persons can become affected with small- pox, and the proportion so attacked during epidemics being nearly determined, a most im- portant problem remained to be solved — viz., what was the condition of the vaccinated per- sons affected as regarded the mere fact of their vaccination'? The authors of all the memoirs agree in stating that vaccinated persons were not afiected indiscriminately or by chance, as it were; on the contrary, the small-pox seems to make a kind of selection from amongst them. With some exceptions, the small-pox attacks those who have been vaccinated since a long period, and spares those who are recently so. An examination of the tables published in various parts of Europe proves positively, that children are seldom attacked with small- pox before the ninth year after vaccination ; and also the converse fact, namely, that it attacks in preference persons who had been vaccinated fifteen, twenty, thirty, or even thirty- five years previously. A general fact, which may be anticipated from the history of erup- tive complaints is, that after the age of thirty-five years, the aptitude of vaccinated person? to contract small-pox becomes so slight that it may be considered as having vanished. An investigation of the facts relative to the occurrence of small-pox in vaccinated person? leads to the three following conclusions: — First. Tile protective power of vaccination is abso- lute and general for the first five or six years, and even to the eleventh or twelfth year, tc judge from the experiments on re vaccination. Second. After the foregoing period, a part, bu' a part only, of those vaccinated again become liable, especially under the influence of at epidemic, to contract small-pox. Third. The greater number of those vaccinated proba- bly remain completely protected from small-pox during their entire life. Has the cow-pox, taken directly from the cow, a more certain and permanent protective power than vaccine matter that has been transmitted more or less frequently through the human constitution? The experiments contained in several of the memoirs confirm the observations made by the Committee on Vaccination, at Paris. The greater intensity of the new vaccine matter, as compared with that long in use, is a fact definitely established by experience in England, Germany, Italy, and France. But is this greater intensity coupled with a greater preservative power ? or, as the report puts the question — Is there any relation between the lesser or greater intensity of the local phenomena and the protective power of the variolous matter? The experiments made on tliis point show that the protective power of vaccine matter is not proportionate to the intensity of the local symptoms, but that vac- cination with matter taken from the cow is more certain than with old vaccine matter. Ad- mitting that the protective power of vaccine matter diminishes with time, should it be renewed, and if so, how? As to the means of renewal, the first mode employed was the transmission of the vaccine matter from man to the cow — an experiment frequently performed as a matter of curiosity, but only recently sought to be rendered a means of restoring to the vaccine matter its lost energy. The authors of several of the memoirs maintain that the cow, when thus vaccin- ated, restores the vaccine matter unaltered, and therefore unregenerated ; but the commission of the Academy thinks this conclusion too absolute : in fact, it has been established by the experiments of the author of one of these memoirs, that vaccine matter taken from man is regenerated during its transmission through the cow. The same fact results from thousands of experiments made in Bavaria under the direction of the government. Vaccine matter tlius regenerated failed in less than one case in a hundred, while the failures of the old vac- cine matter were nearly //tree ^cr cent. Would it not be better to transmit the vaccine matter through several cows in succession than through one only? The mode, however, which should be preferred to all others — the only one on which we can entirely rely — is, as recom- mended by Jenner, to obtain vaccine matter from its original source. Several circumstances seem to show that the cow-pox is perhaps of less frequent occurrence than is commonly sup- posed, and the commission suggests, that those who happen to meet with it should not con- tent themselves, as has been done hitherto, with transmitting jt to man, but transmit it to other cows, and thus regenerate the infection. Is it necessary to vaccinate the same person several times? and if so, after the lapse of how many years should the revaccination be performed ? On this head the report first referi to the fact that the revaccinations, performed for a considerable period after the discovery cf SMALL-POX. 991 vaccination, did not succeed, except in some rare cases, because they were performed too soon alter the primary vaccination. But when, at a later period, experience showed tliat the protective power of vaccination diminished with time, the practice of revaccination was resumed, &ad then succeeded beyond expectation. la some parts of Germany, especially, revaccination has been practised universally in the army, and even in civil life. Physicians, also, who had had small-pox, in some instances revaccinated themselves with success, of which Dr. Heim is a remarkable example. He attended on his brother for three weeks, while he laboured under confluent small-pox, and three weeks after having gone through this decisive trial, he vaccinated himself, and had pusttiles almost of the ordinary size. M. Moreau, the celebrated accoucheur, who had small-pox in early life, revaccinated himself three times with success. A document published by the Government of Wurtemberg, which showed that of 1677 persons affected with small-pox, between the years 1831 and 1S3G, 1055 had been vaccinated, contributed greatly to extend the practice of revaccination in Germany, and in the north of Europe. In France, the statistics of epidemic small-pox show that the number of vaccinated persons attacked with small-pox constitute more than a third of the whole number of patients affected. It is impossible, therefore, to doubt the propriety of practising revaccination. It is during epidemic small-pox, especially, that the utility of revaccination becomes obvious. Not only have individuals been thus protected, but the spread of the epidemic has been arrested. In Prussia revaccination has been practised in the army since 1833, and the small-pox has been almost entirely extirpated. In Wurtemberg, but one case of variola occurred in five years, among 14,384 revaccinated soldiers, and three only among 29,684 revaccinated civil- ians. Epidemic small-pox has not appeared in France since 1830, the period when revac- cination was commenced. The authors of the memoir agree that during epidemics it is prudent to revaccinate after about the eighth or ninth year. The answers given by the competitors for the prize to the questions proposed by the A-cademy, may be thus summed up : — 1st. The preservative power of vaccination is absolute for the majority, and temporary for a small number ; and even in the latter it is absolute until adolescence. 2d. Small-pox rarely attacks those who have been vaccinated in infancy before the age of ten or twelve ; from which age, however, until thirty or thirty-five, they are particularly liable to small-pox. 3d. In addition to its protective power, vaccination so modifies the animal economy, that it attenuates the symptoms of small-pox, abridges its duration, and considerably diminishes its danger. 4th. Vaccine matter taken directly from the cow causes local symptoms of greater inten- sity; its effects are also more certain than those of old vaccine matter, but after being trans- mitted for a few weeks through the human subject, the local intensity disappears. 5th. The preservative power of vaccine matter does not seem to be intimately connected with the intensity of the symptoms of vaccination ; nevertheless, it is prudent to regenerate vaccine matter as frequently as possible, to preserve its protective power. 6th. The only mode of regenerating vaccine matter deserving of confidence is to procure it from the cow. 7th. Revaccination is the only known method of distinguishing those vaccinated persons that remain protected from those that do not. 8th. The success of revaccination is not a certain proof that the person in whom it suc- ceeds was liable to contract small-pox ; it merely establishes a tolerably strong presumption that they were more or less liable to be so. 9th. In ordinary periods, revaccination should be practised after fourteen years, but sooner, as already remarked, during an epidemic. See also, on this subject, Condie on Diseases of Children, p. 458, et seq. — C] LECTURE LXXXVIII. Chicken-Pox. Measles. Scarlet Fever. I MUST not omit a short notice of the disorder called chicken-pox; for although a very unimportant complaint, it has given rise to many disputes. Other names which it has borne are varicella, crystalli, variolse pusillge. Connected with the small-pox, and arising from the same contagion, there are several forms of eruptive disease. I mentioned the chief of them in the last lecture, as varieties of modified small-pox. Now these mild and irregular forms of variola. 992 CHICKEN-POX. ' both parents and medical men, wishing, I suppose, to believe nothing in disparage- ment of the protecting power of vaccination, are very apt to consider, and to call, chicken-pox : and this error having been discovered, some persons have rushed to, or rather revived, the opposite opinion — equally erroneous in my judgment — that there is no such substantial disorder as chicken-pox ; but that all the eruptions which have passed under that name have reall}^ been forms of modified small-pox. Dr. John Thomson, of Edinburgh, is one of the stoutest maintainers of this doctrine. No doubt an eruption of short duration, and vesicular through the greater part of its pro- gress, is often caused, especiall}' in persons who have been vaccinated, b)^ the conta- gion of small-pox: but a similar eruption proceeds also from another distinct contagion, that, namely, of chicken-pox. The best description of the true chicken-pox that I am acquainted with has been given by Dr. Gregory. The disorder is almost pecuhar to infants, and children of tender years. Willan has, however, described one unambiguous example of it, in a gentleman thirty years old ; and another genuine instance was seen by Dr. Gregory, at the Small-pox Hospital, in the person of an adult female. The eruption is pre- ceded by little or no premonitory fever, commencing usually on the shoulders, neck, and breast, affecting almost always the scalp, but sparing very much the face — which, in small-pox, never escapes. The eruption is composed, from the very first, of perfectly transparent vesicles, surrounded by a very slight degree of superficial redness. They are usually numer- ous, but distinct. Dr. Gregory says that when the eruption is very copious, the body has the appearance of having been exposed to a momentary shower of boiling water, each drop of which had occasioned a minute blister. Crops of vesicles ap- pear in succession for two or three days ; and while new ones_are forming, the first are beginning to shrivel. The vesicles that remain after the second or third day become slightly opaque, and hke pearls. AVhen irritated by friction, they some- times take on so much inflammation as to be converted into pustules. The scabs are small and gummy, dry quickly, and crumble off', instead of being detached in one r.)ass. In a few instances, shallow cicatrices are left by the vesicles. During the short progress of this eruptive disease there is no constitutional disturbance of any consequence. It has been ascertained of this genuine chicken-pox, or varicella lymphatica, that it occurs once only to the same person ; that it spreads by contagion ; that never- theless, it is not communicable by inoculation — whereas the matter of modified small- pox, when engrafted, produces genuine variola; that it occurs equally among those who have, and those who have not, been vaccinated ; that its course is not afl^ected bv antecedent vaccination ; and that the vaccine vesicle and disease proceed with perfect regularity after the occurrence of chicken-pox. Now this never happens after small-pox. It appears, from Mohl's work De Varioloidihus et Varicellis, that from the year 1809 to 182:3, chicken-pox was annually observed at Copenhagen without concomi- tant small-pox; and that both diseases have since prevailed at intervals epidemically, but always under circumstances which satisfied the physicians of the town that theii sources were distinct. It must, therefore, I think, be admitted, tnat there is a separate disease, called chicken-pox, which springs from a specific poison; produces a vesicular eruption ; runs a definite course ; has no tendenc5% when undisturbed, to suppuration ; occurs but once ; and affords no protection against small-pox ; while, on the other hand, small-pox affords no protection against it. The main point of practical importance is, however, this ; that if we meet with any eruption which is at all equivocal, we should use the same precautionary mea- sures for preventing the extension of the disease as if we were sure that it was modified small-pox. But this salutary rule is often, I say, neglected or infringed, to the darv- ger and detriment of those unprotected persons who happen to be in the vicinity of the sick child. The treatment required in chicken-pox is abundantly simple ; it is the same, in MEASLES. 993 fact, which has been already recommended for the mildest cases of the discrete small-pox. Another of these blood diseases is the measles; called, also, by nosologists, rubeola., and morbilli. Like different human faces, all the complaints belonging to this group have the same set of features, and therefore a mutual resemblance, while the separate linea- ments differ so much in their character and relative circumstances, as to give to each disease its distinctive aspect. There are also minor shades of difference between in- dividual cases of the same specific malady. Measles, accordingly, has its introductory fever, its period of eruption, its peculiar kind of eruption, its course by stages. It is communicable from person to person, and it generally occurs but once to the same person. On some of these points 1 spoke before. The introductory fever is sometimes severe, and nearer in its type to synocha than to typhus. Like all fevers, it begins with lassitude, and shivering, which is soon followed by heat of skin, acceleration of the pulse, anorexia, and thirst. But the pecuharity in the fever which precedes the eruption of measles is, that it is very constantly attended with an imflammatory condition of the mucous membranes ; especially of those which are proper to the air-passages. The eyes become vascular and watery, the eyelids heavy, turgid, and red. The membrane which lines the nasal cavities, the fauces, the larynx, trachea, and brcnchial tubes, is affected. Flence we have, generally, as symptoms, much sneezing, as Avell as lachrymation, a copious defluxion from the nostrils, soreness of the throat, and an obvious redness of the fauces, and most commonly a dry, hoarse, pecuhar cough. In short, the symptoms which usher in an attack of measles are the symptoms of coryza and catarrh. In some instances there is diarrhoea also, indicating a simultaneous affection of the mucous membrane of the intestines; and not unfrequently vomiting: but the vomiting, as in small-pox, ceases upon the coming out of the eruption. The regular period for the appearance of the eruption is the fourth day of the disease; seldom earlier, frequently later : sometimes as late as the eighth or tenth day from the commencement of the catarrh. The eruption itself is a rash, consisting, at first, of minute papulae, which, as they multiply, coalesce into blotches that have, more or less, a horse-shoe or crescentic shape, and leave the intermediate portions of skin of their natural colour. It is two or three days in coming out, beginning on the face, neck, and arms, then reaching the trunk of the body, and so travelling down to the lower extremities. In this course it resembles the eruption of small- pox. It fades in the same order, standing out three days at least on the face before it begins to decline ; so that its whole duration comprises a space of six or seven days. It becomes browner as it fades. You may feel that it is slightly elevated above the general surface of the skin, especially upon the face, which is somewhat bloated and swollen. The parts which the rash has recently occupied are left covered ' with a dry, small scurf. The cuticle does not peel off in large flakes, as I shall have to tell you that it oftentimes does in scarlet fever, but a great part of it crumbles away in a fine branny powder. Occasionally, yet very seldom I beheve, the rash is intermixed with a few small and short-lived vesicles. This termination of papulae is very unlike what happens in variola ; and connected with the eruption there are two other important particulars in which the measles differs essentially from the small-pox. In the first place, the fever does not cease, nor even abate, upon the emergence of the eruption ; but sometimes increases in intensity. And, in the second place, the disorder is not more severe, nor more dan- gerous, because the eruption is plentiful, or early. So far from it, indeed, that iu some of the worst and most perilous cases the eruption is apt to be partial, and to appear late and irregularly. The eruption is the distinguishing feature of measles ; but the catarrhal affection IS, in every way, the most important. Indeed, the rash may, and sometimes does, happen without the fever and the catarrh ; and nosologists recognise a variety of thi; disorder under the title of rubeola sine catarrho. But it is observed of this variety 63 994 MEASLES. that, it confers no protection whatever against the recurrence of the malady ; in truth, It is most commonly succeeded in a few days b}'' an attack of measles in its regular and complete form. f need not stop to repeat what I told you in a former lecture about the other gene- ral features of this eruptive complaint. The period of incubation is from ten days to a fortnight. The contagion is active enough, though certainly it is less strong and diffusive than that of small-pox. When once introduced into a family or school, the disease rapidly spreads to those individuals who have not already had it. It is capa- ble, though with much less readiness and certainty than small-pox, of being propa- gated by inoculation ; but as the disorder is not rendered milder by Being so intro- duced into the system, this process has no utility or interest, and is never resorted to. Occasionally, rubeola visits the same individual twice ; but this is the exception to the general rule. Perhaps, in some reputed instances of its recurrence, the first accession may have been without fever and catarrh, and therefore an ineffectual safeguard for the future. I myself know, however, two large families in which most of the children have suffered a repetition of the genuine unmitigated disease. The measles resembles the other diseases of the group in this also, that at times it pervades a community as an epidemic ; at times occurs here and there only, spora- dically. The general character of the symptoms varies considerably in different epidemics. Morton and Sydenham, and after them Sir William Watson, have described visitations of what they call putrid measles. Sir William Watson was physician to the Foundling Hospital, and he witnessed two epidemics of this putrid kind among the children in that institution. He states that the eruption appeared unusually early, so early as the second day of the disease; and that, besides cough and d\'spnoea, the complaint was marked by extreme debility, and attended with dysenteric diarrhcEa. More seemed to die of the intestinal affection, than of the pectoral. He lost, in one of these epidemics, nineteen out of one hundred and eighty-three patients. The malignant character of the disorder was manifested by the frequent occurrence of gangrene, both externally and internally. In this more typhoid variety of measles, the rash is often irregularly and imperfectly developed, and of a livid colour. Sydenham found that measles of an unusually bad kind prevailed in London in the years 1G70 and 1G74 ; the very same years in Avhich small-pox was also remark- ably malignant and fatal. This illustrates what I have stated before, viz., that the typhoid tendencies of these and other febrile disorders depend less upon any pecu- liar virulence in their exciting causes, than upon some change previously effected in the human body by the silent and gradual influence of certain predisposing causes. The diagnosis of measles is seldom difficult. In the outset of the fever, you may guess what is coming by the coryza, catarrh, and hoarse cough; especially if the disease be about. On the very first day of the eruption, the small, red, and hitherto separate spots, are very like the incipient pimples of small-pox. Do not, therefore, at this period, express too confidently your opinion respecting the nature of the com- plaint. Parents and nurses might be uncharitable enough to attribute your mistake to inexperience or ignorance. The progress of the disease will soon remove all doubt. The eruption of small-pox presently exhibits some fluid, while that of mea- sles has none — unless, indeed (what is uncommon), a k\v miliary vesicles mix them- selves with it. But these make no advance in twenty-four hours. Ordinarily, the isolated pimples visible upon the first day soon augment in number, and collect them- selves into semicircular groups ; and if any question at all arises, it is whether the disease be measles or scarlet fever. I shall presently describe the latter disorder ; and then I will point out the marks of distinction between the 'wo. The prognosis in measles is governed chiefly by the mildness or the severity of the pectoral symptoms. The most common cause of death, in the fatal cases, is inflammation of some one or more of the textures that compose the lungs. And even when this immediate danger has passed by, the disease too often leaves chronic pulmonarj' mischief behind it. In scrofulous children, and j^oung persons, it fre- quently awakens the slumbering germs of consumption. And when that specific MEASLES. ddS effect is not produced, it is apt, in adults, to inflict upon the constitution a blow which is never thoroughly recovered from ; the patient becoming, from that time forwards^ delicate and valetudinary. The prognosis is always unfavourable when the eruption does not stand out well, is of a livid colour, and accompanied with typhoid symp- toms, or with a disposition to gangrene. We augur favourably of the case when the thoracic symptoms are not severe ; when the fever moderates upon the coming out of the rash ; and when the rash is steadily persistent, and there is no excessive prostration of the strength. Being contagious, and occurring for the most part but once, measles is principally seen in children ; although no period of hfe is exempt from its attacks. In many children, the disorder is so slight as to require little more than judicious domestic attentions. The free application of cold air to the surface, which is so beneficial in small-pox, would in measles be unsafe, on account of the pectoral symptoms. For this reason, the patient should be kept in bed ; with no more clothes, however, or warmth of the apartment, than he is accustomed to in health. The antiphlogistic regimen must be adopted ; and, if the bowels are not quite open naturally, gentle laxatives should be given. It may be well, also, to prescribe some diaphoretic medi- cine ; a draught, for example, containing two or three drachms of the liquor ammonise acelatis, with half a drachm of the spiritics xtheris nitrici, and an ounce of cam- phor julep, to be taken three or four times in the twenty-four hours. The most important part, however, of the treatment relates to the remedies to be employed for the pulmonary symptoms, which, in the outset, depend almost always upon bronchitis. But the inflammation is apt, in severe cases, to spread insidiously from the mucous to the other tissues — the bronchitis becomes pneumonia — and we find, after death, some portions of the lungs hepatized ; usually small portions. For the most part, however, it is extensive inflammation of the bronchial mucous mem- brane that we have to dread. And really I cannot give you any better or fuller directions in respect to the management of these inflammatory affections, than I endeavoured to lay down when I was speaking of bronchitis and pneumonia, as they occur idiopathically. You will judge of the extent and severity of the inflam- mation, partly by the common symptoms, partly by the help of your ear ; and j^ou must apportion your remedies to that intensity, so judged of. You will take blood from the arm, or from the chest, apply a blister, and give tartar emetic. And it is of importance that whatever kind or amount of depletion is adopted, should be resorted to early. When the rash is about to decline, a spontaneous diarrhcea often sets in, and appears to have a beneficial effect in abating the febrile symptoms. If this natural curative process should fail to occur, it may be imitated by the exhibition of gentle aperients. In weakly children blisters are apt to cause troublesome sores ; and in some epi- demics of measles, the sores thus produced show a disposition to become gangrenous. When any such tendency is noticed, blisters had better be avoided altogether. At other times, the inconvenience to be apprehended from a blister may be prevented by one of two plans ; either by interposing a piece of silver paper between the blistering plaster and the skin ; or by suffering the blister to remain upon the part three or four hours only, then taking it off, and applying a pouUice. The cuticle will rise under the poultice, and the sore will not, in general, be a troublesome one. If the eruption disappear prematurely, it may sometimes be restored by putting the patient into a warm bath. And if he be at the same time in a low state, espe- cially if typhoid symptoms threaten or show themselves, you must treat the case upon that indication, just as you would in continued fever; giving wine and support, with great caution and watching of their effects. It is of considerable importance to protect the patient from danger after the disease has subsided ; by warm clothing, by preventing him from going out of doors too early, or being in any way exposed to cold. Pneumonic inflammation, and dysenteric purging, are frequent consequences of the want of prudence in this respect. I proceed, in the next place, to the consideration of scarlet fever. 996 SCARLET FEVER. This also is a contagious febrile disease, attended almost always, during a part of its course, by a rash, and by sore throat. It seldom comes on a second time. There are some distinct varieties of this disorder, concerning which it is necessary that I should say a few words. The two striking and important features of the disease are the affection of the throat, and the affection of the skill. They may both be well marked ; or only one of them may be well-marked : and this circumstance has led nosologists to divide one and the same complaint into two independent maladies ; to which Cullen and others have assigned the respective names of cynanche maligna, and scarlatina. When, in an earlier part of the course, I was treating of the diseases of the throat, I purposely omitted the cynanche maligna ; because that is only another name for a particular form of scarlet fever. If you look to CuUen's definitions of these com- plaints, you will see how very much alike they are. They both specify inflamma- tion of the fauces, a cutaneous rash, and fever. But in the definition of scarlatina, the rash is dwelt upon and described, and the fever is called synocha ; while in that of cynanche maligna, the ulceration of the throat is more insisted on, and the fever is said to be typhoid. The truth is, that these two kinds of disorder both spring from the same contagious poison. The malignant sore throat may be caught from a patient who has mild scarlet fever ; and mild scarlet fever may, in like manner, be contracted from one who is labouring under the malignant sore throat. The two forms graduate insensibly, in different cases, towards each other ; and it would be impossible, even if it were desirable, to draw any strict line of separation between them. For convenience, however, of description, and for the better direction of the treat ment, authors generally make three varieties of scarlatina. Scarlatina simplex, ir which there is a florid rash, and httle or no affection of the throat ; scarlatina anginosa in which both the skin and the throat are decidedly implicated ; and scarlatina ma ligna, in which the stress of the disease falls upon the throat. The epithet maligna marks truly the fearful character of this form of the malady, I need scarcely remind you of a sort of mystification which prevails among the public about this complaint, and which many practitioners, for no good reason that I can see, seem disposed to encourage. Mistaking the Latin and scientific name of the disorder for a mere diminutive, you will hear mammas say, " Oh, my children have not got the scarlet fever, but only the scarlatina.'''' I always disabuse them of this absurd error, when the opportunity of doing so occurs. It can produce nothing but confusion, and a disregard of requisite precautions. Like measles, and for the same reasons, scarlet fever, though persons of all ages are susceptible of it, is eminently a disease of children ; but it is much more to be dreaded than the measles. It is somewhat strange that scarlet fever was not recognized, in this country at least, as a distinct disease, till about two centuries ago. In all probability it had long existed, and had been always confounded with measles, Morton speaks of it under the name of morbili confluent es ; and Hoffman calls it, by a similar mistake, rubeola rossalia. The febris scarlatina described by Sydenham must have been of a very mild kind; for he does not mention any ulceration of the throat. Dr. FothergiU, in 1748, was the first to describe, as a new and separate disorder, that perilous form of the complaint which Cullen designates cynanche maligna ; and it was long called the FothergiU sore-throat. The identity of this affection with genuine scarlef fever has been slowly established by subsequent observers. The characteristic differences between scarlet fever and measles were first fully specified by Dr. Withering. The disease begins, as the exanthemata in general begin, and as continued feverj which I have grouped with them, is apt to begin, with shivering, lassitude, and rapidly augmenting debihty ; headache, frequently severe, sometimes with delirium, occa- Bionally with nausea and vomiting. Then, generally, on the second day (and Cullen is wrong when he says it is generally on the fourth), the eruption begins to come out. In some of the worst forms of the disease, it may, indeed, be deferred till the fourth day. Although scarlet fever and measles were so long confounded together, the differ- SCARLET FEVER. 997 ences between them are well pronounced, and, when once pointed out, are easily enough recognized. Rubeola is distinguishable, then, from scarlatina — 1. By the presence, at the outset, of catarrhal symptoms — by the sneezing, the cough, the defluxion from the eyes and nose, which precede the rash. There is, doubtless, in many cases of scarlatina, a running from the eyes and nose, but not tiJl late in the disease ; at any rate not prior to the eruption. 2. By the absence of severe inflammation and ulceration of the throat ; symptoms which always accompany severe cases, at least, of scarlet fever. 3. By the characters of the eruption itself. The rash in measles is more elevated above the surface than in scarlatina, and of a darker colour. In measles it is said to present somewhat the tint of a raspberry, and in scarlet fever to be that of a boiled lobsters. In measles the papulae are collected into semilunar clusters, leaving inter- stices between them of healthy skin. The redness of scarlatina commences in minute points, which speedily become so numerous and crowded, that the surface appears to be universally red. They begin on the face, neck, and breast, and extend to the extremities, pervading at last every part of the skin. The scarlet colour is deeper, in general, about the groins, and in the flexures of the joints, than elsewhere. Lastly, the rash of measles, in its most regular form, appears on the fourth day of the disease ; that of scarlet fever on the second. On the arms and legs the eruption of scarlatina occasionally difl^ers somewhat from that which is visible on the trunk ; is more spotty, more papular, and the papulte are somewhat prominent, while over the body there is a general diffused blush. In some cases of scarlet fever (probably in some epidemics, for I observed the phenomena I am about to mention in four or five cases in succession which were brought into the Middlesex Hospital within the space of a month or six weeks), some parts of the red surface are closely studded with little transparent vesicles, con- taining a thin colourless liquid, and resembhng what I described to you before as sudamina. In all the instances in which I have seen them, these minute vesicles have been most thickly set on the thorax, and on the front and sides of the neck. The liquid is soon re-absorbed, and the cuticle under which it had been enclosed shrivels up, turns white, and comes off" in a thick white scurf: so that the part from which it separates looks at first sight as if it had been powdered. I have recently seen two cases of this vesicular form of scarlatina in private practice. I show you Rayer's delineation of the vesicles. The eruption, in the most regular and favourable cases, stands out for three or four days, and then begins to fade and decline, becoming by degrees indistinct, and disap- pearing altogether, in the majority of instances, before the end of the seventh day. About this time desquamation of the cuticle begins to take place, in smaller scurf or scales from the face and body, in large flakes frequently from the extremities. The scarf-skin of the hands and of the feet sometimes separates almost entire. A glove or a slipper of cuticle comes away at once. You may see such things in most museums. In that variety of the disorder which we call scarlatina maligna, the rash is apt to come out late, and imperfectly, and sometimes not at all; and instead of being bright and florid, to present a bluish or hvid tint. Sometimes it suddenly recedes ; and then, perhaps, appears again : and occasionally it is diversified by purple spots. Willan and Bateman have given the name oi roseola to an eruption which is also attended with inflammation of the throat, and between which and scarlatina it is cer- tainly difficult, if not impossible, at first to discriminate. The roseola, however, is not contagious, and has more of a chronic character than scarlatina. It comes and goes, and has no settled or definite course. Dr. A. T. Thomson lays down this dis- tinction between them ; but I do not know that we can trust to it : — " In scarlatina (he says) the rash first attacks the face, and then extends to the trunk of the body, passing off' by the extremities ; whereas in roseola the extremities ^xe first affected." The appearances of the tongue in scarlet fever are also peculiar and characteristic In the scarlatina simplex, and anginosa, it is often covered, at the outset, with a 4i 998 SCARLET FEVER. thick, white, cream-like fur, through which are seen projecting the red and exagcre. rated papillae ; the edges of the tongue being likewise of a bright red colour. The red points gradually multiplj^ and the white fur clears away, and at length the whole surface of the tongue becomes preternaturally red, and clean, and raw-looking: and after becoming thus clean, as well as red and rough, and like a strawberry, it will sometimes, when the disease goes on unpromisingly, get dry, and hard, and brown — as you know it is apt to be in certain forms and stages of continued fever. The first thing of which the feverish patient usually complains is sore throat, with some stiffness of the neck : and if you inspect the fauces, you will see, without in general so much swelling of the tonsils as occurs in common quinsy, a diffused red- ness, sometimes of a dark claret colour, including a large part of the palate. In a short time you may perceive that the tonsils and vellum are covered irregularly with whitish exudations, or gray aphthous crusts : or, perhaps, you see a sloughy kind of ulceration left by the separation of these crusts. The progress of the distemper, and its degree of severity and of danger, differ very greatly in different cases. Sometimes the deviation from the feelings and condition of health is so very slight as scarcely to deserve the name of a disease ; sometimes the disorder defies all treatment, and the deadliest forms of plague are not more fatal. In these mahgnant and terrible cases, the eruption, if it appear at all, is livid and partial, and fades early, and is attended with a feeble pulse, a cold skin, aiid typhoid depression. Sometimes the patient sinks at once, and irretrievably, under the viru- lence of the poison, and life is extinguished in a few hours. A gentleman called one day at my house, and not finding me there, followed me between twelve and one o'clock to the hospital. He wished me to visit his wife, four or five miles out of town, who had been taken ill that morning. He feared that she was about to have scarlet fever, but he was not much alarmed for her safety ; for when he found that 1 could not be at his house before six, he said that that hour would not suit the gene- ral practitioner in attendance upon her, and he begged me to fix some time for seeing her the next day. I did so ; but the same afternoon rapid sinking came on, and the patient was dead very soon after the hour at which I had first proposed to visit her. In other cases of scarlatina maligna, the typhoid symptoms rapidly deepen ; and death, in children, is apt to occur on the fifth day of the complaint ; and not uncom- monly as soon as the third. The pulse becomes frequent and feeble; the tongue dry, brown, and tremulous; the debility extreme; the throat is ulcerated and gan- grenous ; and the respiration is impeded by viscid mucus which collects about the fauces. Over this variety of the disease, medicine has comparatively little control. The chance of recovery is much greater in the scarlatina anginosa, when the eruption is florid, and stands well out. But even in this form of the disorder there are many sources of danger, and various ways in which it may prove fatal. In the first place many of the patients die, apparently from inflammation or effu- sion within the head. They have violent headache, with furious dcHrium, which is followed by coma, and death. And secondly, the state of the throat is full of peril. As the disease proceeds, although the rash may be steadily persistent, the throat becomes foul and sloughy, an acrid discharge from the nostrils, which are so stufft'd and swollen internally that the patient can scarcely breathe through them, runs over and frets the upper hp ; the parotid and sub-maxillary glands swell, sometimes enormously; and fever is lighted up afresh. In this way many cases prove fatal in the second week of the disorder. The cervical swelling causes constriction of the fauces and stiflriess of the neck ; and sometimes, doubtless by interfering with the free return of the blood from the head through the jugular veins, they produce a tendency to coma. With these sj'mptoms there are often also purging, and an excoriated anus. The acrid matters furnished by the ulcerating and gangrenous throat irritate the nasal membrane in me one direction, and that of the alimentary canal in the other. We thus account for the running from the nose, the soreness of the aloe nasi and upper lip, and the smarting diarrhosa : and the swelling of the parotids and neigh- bouring glands is evidently caused by absorption of the irritating and poisonous mai- \ri from the ulcerated throat. There is just the same relation and dependency SCARLET FEVER. 99^ between these different local alterations, as between the enlarged mesenteric glands, and ulceration of the follicles of Peyer in continued fever; between a bubo in the groin, and a chancre on the glans penis. It is the condition of the throat that gives rise, in these cases, to the most formidable symptoms. The system is reinoculated from that source. Whenever I see the glands much enlarged at the angle of the jaw, and beneath the jaw, in a child labouring under scarlet fever, I augur ill of the case. Sometimes the mischief extends into the larynx, and so destroys the patient. But this is probably a very rare event. There is, however, still another, and a very common consequence of the throat affection — I mean inflammation of the Eustachian tube, reaching sometimes the tympanum itself, and causing permanent deafness, either by closintr up the tube, or by the destruction of the membrana tympani, and of the little bones belonging to it. In one case, which was under my own care, I observed that, for a short time before death, every time the child swallowed, a part of the fluid food ran out immediately at one of its ears. I had no opportunity of examining the state of the part after death, but the disorganization arising from the sloughing ulceration of the throat must have been frightful. Scarlet fever sometimes befalls parturient women ; and then it almost always proves fatal. I have seen three instances only of recovery from this perilous com- plication. Scarlatina simplex is scarcely, I repeat, a disease. Sydenham has said of it that it is "fatal only through the officiousness of the doctor." Even when the patient has escaped from the complaint itself, he is often exposed to great hazard and distress from its consequences. Children who have suffered a severe attack of scarlet fever are liable to fall into a state of permanent bad health, and to become a prey to some of the many chronic forms of scrofula : boils, strumous ulcers, diseases of the scalp, sores behind the ears, scrofulous swellings of the cervical glands and of the upper hp, chronic inflammation of the eyes and eyelids. The same afiiicting results are very common after small-pox also, and measles. I have several times, when the rash of scarlet fever was disappearing, known pain and sweUing of the larger joints to supervene, simulating very closely the local phe- nomena of subacute rheumatism : and I have noticed that the painful joints were eased and benefited by friction ; a circumstance which may help to distinguish this articular affection from true rheumatism. Another distinctive circumstance seemed to be that, although all these patients were children, the heart in no instance became implicated, in connection with the tumid joints. Upon this point, however, my own experience may have been fallacious. Dr. Scott Alison has recently invited atten- tion to the subject, in an interesting essay " On Pericarditis, a complication and sequela of Scarlatina." Accepting his facts, I should ascribe the articular affection, and the cardiac affection, whether they occurred together or separately, to one and tlie same cause ; namely, to the retention in the blood of a poisonous excrement, by the default of the principal emunctories, and especially of the kidney. But certainly the most common, and a very serious sequel of scarlatina, is ana- sarca, sejous infiltration of the subcutaneous areolar tissue, accompanied often with dropsy of the larger serous cavities. So common is this that Cullen has even intro- duced the circumstance as a part of his definition of scarlet fever. He found the dropsy a very manageable complaint ; but it really is, in many — nay, in most cases, if we look to its probable ultimate consequences — a most formidable one. This affection belongs to the class o{ febrile dropsies. It appears to have no relation, or, if any, an inverse relation, to the violence and danger of the preceding exanthem. It is much more common after a mild than after a severe disease. This, in all pro- bability, is owing to the circumstance that less care and caution are observed in the milder cases during the dangerous period of desquamation and convalescence; a •oeriod more dangerous, in that variety of scarlatina, than any other. In the graver cases the convalescence is slower, and more doubtful ; and accidental or carele.-s exposure to cold is more guarded against, or takes place later: whereas, in the slighter kinds of the disorder, the patients are apt to go out while the new cuticle is still forming. If you carefully trace the histories of dropsy succeeding to scarlet fever, you will almost always find that the fever had been trifling ; and that the 1000 SCARLET FEVER. patient, considering himself well or nearly so, had heedlessly encountered a cold or damp atmosphere so soon as he fell himself strong enough to leave the sick chamber. Plenciz, who has written well on this subject, and who was quite aware of its im portance, remarks that those patients who have had much desquamation of the cuticle are the most liable to the dropsy ; that it is more frequent in winter than in summer ; and in such as are early exposed to the open air after having passed through the fever, than in those who remain longer at home. When the desquama lion is over, and the new surface has become in some degree hardened, the peril is past. According to the observations of Dr. Wells, the dropsical symptoms com- monly show themselves on the twenty-second or twenty-third day after the commence- ment of the preceding fev^er. They have been known to begin as early as the sixteenth, and as late as the twenty-fifth day. When no dropsy took place before the end of the fourth week, Dr. Wells always ventured to state that it was no longer to be dreaded. This anasarca is seldom observed except in children and young persons. The age of the oldest patient that Dr. Wells had known to be so affected was seventeen. Of ten instances of the disease seen by Dr. Blackall, six occurred in children not exceed- ing the age of ten, and two others in persons who were respectively ten and sixteen years old. We cannot infer, from this, that the susceptibility of this dropsical condition lessens as years increase. The great prevalence of this variety of dropsy in early life has no direct relation to age as a predisposing cause. The fact is explained by the accidental peculiarities of the antecedent disease. The contagion of scarlet fever is active and widely diffused. Few children escape its agency. Few are capable of taking the disorder a second time. It follows that scarlet fever is rare in adult life : and as dropsy succeeds that disease in a very limited number of instances only, drops}' arising in connection with scarlet fever must, at the adult age, be still mor^ Mncommon. Yet it is not unknown. One of Dr. Blackall's ten patients was thirty, another forty-two years old. Both of these were women. In this, as in other species of febrile dropsy, the urine is ver\'- constantly troubled, bloody, albuminous ; and it is an interesting fact, that the chronic form of renal dropsy, manifesting itself at some distance of time, has been distinctly traced back to its source in the acute anasarca immediately consequent upon scarlet fever. The sequence has occurred, in all probability, much oftener than it has been noticed. There is scarcely room for doubting that the series of organic changes in the kidney, described by Dr. Bright, do frequently date their origin from an attack of febrile anasarca: and in proportion as facts, accurately observed, accumulate on this sub- ject, the chain of connection becomes more clearly visible between acute febrile dropsy, dropsy succeeding scarlet fever, and chronic renal dropsy. It is evident, indeed, that the first two of these three are, in their characters and exciting causes, identical, the only difference between them consisting in the remarkable predis- position towards the second, impressed upon the body by the preceding exanthem. Both of them again are, in many instances, initiative of the third. It is natural therefore to expect that in the variety of lebrile dropsy now under consideration, as well as in those which I formerly described, ii\flammation, and especially inflammation of the serous membranes, should be common, and evidenced by its unequivocal effects. And it is so. But the dropsy, I am persuaded, has no essential connection with common inflammation of any part, unless the state of the kidney be of that kind. I have examined the body very carefullj' in fatal cases, and found the serous cavities full of clear liquid, without a trace of redness or of any of the unmistakeable products, or events, of inflammatory action. The earliest threatenings of this formidable complamt demand attention. It is iisualh' preceded, for a day or two or longer, by languor and peevishness ; frequently by nau.'iea and vomiting, and a costive state of the bowels. The pulse, in the out- set, has been found slow, and Beating with irregular intervals ; but it afterwards becomes frequent. The urine, at first, is scant}' as well as altered in appearance. The face becomes pale, and chuffy. Sometimes, as the disease proceeds, violen* SCARLET FEVER. 1001 headache, dilatation of the pupils, convulsions, or palsy, denote effusion within the head. Much more frequently the pleurae are the seat of the internal dropsical accu- mulation, and dyspnoea is a prominent symptom. Ascites, to any considerable amount, is rare. The contagion of scarlet fever is active, but uncertain. It is not so strong, nor so uniform in its operation, as that of small-pox ; but it seems to be pecuharly subtle and tenacious. Fomites infected with the variolous poison soon lose their power to excite the disease if they are freely exposed to fresh air. But the contagion of scarlet fever lurks about an apartment, or chngs to furniture and clothes, for a very loner time, even after some care has been taken to purify them. Of this I have known several remarkable examples. You will be asked at what period the danger of impartino- the disease on the one hand, or of catching it on the other, is over; and I would recommend you to answer that you do not know. I am sure I do not : and therefore I always decline the responsibility of giving an oracular opinion on the matter. I may arrange what I have to say of the treatment of scarlet fever, according to the three varieties of it already mentioned, the scarlatina simplex — anginosa — and maligna. The first of these requires nothing more than confinement to the house ; and the observance of the antiphlogistic regimen in regard to diet ; and regulation of the bowels. With respect to the management of the severer forms of scarlet fever, great differ- ences of opinion have prevailed. I should recommend you to look into Dr. Williams's book on Morbid Poisons, for some interesting and satisfactory information on this head. Satisfactory to me at least it is, because the result of it goes to justify that kind of practice which I have always considered to be the safest and the best in this disorder. Tn the scarlatina anginosa, the treatment I employ is very much the same as that which I consider proper for many cases of continued fever. If the heat of the surface be very great and distressing, I should certainly recommend the cold affusion, but cold or tepid sponging will be very refreshing and beneficial. If dehrium should come on, I would shave the scalp, and apply cold to it, and take away some blood by leeches : and the leeches I would apply to the throat rather than to the temples; for the tonsils, in this form of the disorder, are more swelled and inflamed, and pro- bably a part of the head aff^ection may arise from disturbance of the balance of the cerebral circulation, produced by the tumefaction around the great veins that return the blood from the head. By leeching the throat you relieve that part, and at the same time the head also. U the fever were extreme and the delirium violent, I would take blood cautiously from the arm, while the patient was sitting up, and care- fully watch the effect. When none of these untoward head symptoms declare themselves, all that we have to do is to keep the bowels open by moderate laxatives. The patient may take sahne draughts, which are grateful and cooling. The citrate of ammonia thus ad- ministered, is what I frequently prescribe : and if the pulse be without hardness, and feeble, I order an excess of the carbonate of ammonia, so that four or five grains of it in each dose may remain unsaturated by the lemon-juice. With respect, then, to this form of the complaint, the principles of treatment are, not to interfere unnecessarily; to take blood when certain symptoms require it, but to take no more than seems likely to be sufficient for the purpose in view ; to bear in mind that the system is labouring under a morbid poison, which we cannot eliminate from the blood, but the dangerous effects of which we are to watch and obviate. In that worst form of scarlet fever, the scarlatina maligna, all our care will too often be in vain. There appear to me two main sources of danger. The one arises from the primary impression of the contagious poison upon the body, and particularly upon the nervous system, which is overwhelmed by its influence. The patients sink often at a very early period, with but littla affection either of the throat or of the skin. If we can save such patients at all, it must be by the liberal administration of wine and bark, to sustain the flagging powers until tlie deadly agency of the poison in some measure passes by. But another source of danger arises from the gantrrenous ulrera 4i2 1002 SCARLET FEVER. tion which is apt to ensue in the fauces, when the patient is not killed by the first violence of the contagion. The S3'stem is re-inoculated, I believe, with tlie poisonous secretion from the throat. Now under these circumstances also, quina, or wine — and upon the whole I should give the preference to wine — are to be diligently, though watchfully given. And something may be done, by way of gargles, to correct the state of the throat, and to prevent the distressing and perilous consequences which would otherwise be likely to flow from it. A weak solution of the chloride of soda may be employed for this purpose; and if the disease occur in a child that is not able to gargle, this solution may be injected into the nostrils, and against the fauces, by means of a syringe or elastic bottle. The effect of this application is sometimes most encouraging. A quantity of offensive sloughy matter is brought away ; the acid discharge is rendered harmless ; the running from the nose, and diarrhoea, cease ; and the disease is converted into a form which approximates to the scarlatina angi- nosa. This is a great improvement upon the old plan of ordering capsicum gargles. Of late I have been in the habit of directing a solution of the chlorate of potass in water, (a drachm to a pint,) as a drink for patients in scarlet fever, and in the typhoid forms of continued fever. This practice was suggested to me by Dr. Hunt, who tells me he has long emplo5'ed it with advantage. Under the use of a pint, or pint and a half, of this solution daily, I have remarked, in many instances, a speedy im- provement of the tongue, which, from being furred, or brown and dry, has become cleaner, and moist. From several distinct and highly respectable sources, chlorine itself has been strongly pressed upon my notice, as a most valuable remedy in the severest forms of scarlet fever. My informants have stated, that whereas they formerly dreaded to be summoned to cases of that disease, they now, having had experience of the virtues of chlorine, felt no misgivings in undertaking its treatment. Since these representations were made to me, I have not had opportunities enough of trying this drug to enable me to speak confidently of its sanative power ; but I shall cer- tainly employ it in future. I presume that its disinfecting properties may, in part, account for the good it does. It probably deprives the foul secretions of their noxious qualit3^ In the fourth volume of the Medical Gazette, INIessrs. Taynton and Williams, of Bromley, write in high praise of this remedy. I will give you the formula for its preparation. Two drachms of the chlorate of potass are to be dissolved in two ounces of hydrochloric acid, previously diluted with two ounces of distilled water. The solu- tion must be put imm.ediately into a stoppered bottle, and kept in a dark place. Tv\'o drachms of 'this solution, mixed with a pint of distilled water, constitute the chlorine mixture ; of which a tablespoonful, or two, according to the age of the pa- tient, may be given for a dose, frequently. We must not omit, in this, as well as in the other forms of the complaint, to pay attention to the state of the bowels, and by no means to allow them to remain costive. I have seldom used blisters in this disease ; but an experienced phj'sician has lately told me that, when appli'^d early to the neck and throat, they seem to render the affection of the fauces mild. When the patient is at length convalescent, he will require careful watching till that period has gone by at which the dropsical symptoms are apt to appear. It is by neglect or imprudence that these symptoms are brought on. The patient should be sedulously protected from all exposure to cold, and wet, and fatigue ; indeed he ought not to be permitted to go out of the house until the process of desquamation is fairly over ; and I would not willingly let a patient go out till some little time after ihis. AVhen dropsical symptoms do occur, if they be very slight, they may be re- moved in general by purgatives, and by digitalis. The hitartratc of potass is a good remedv too in such cases, and the use of the warm bath, v.-hich may be repeated every night. But if there be anj- indication of inflammatory disease within, we must adoj/4 •^nore active measures. We have not, now, to contend with the depressing influence SCARLET FEVER. 1003 of the 6riginal poison, but we have to dread the consequences of acute inflammation ; or of the sudden effusion of fluid, the mere presence and pressure of which may fatally oppress vital organs. We should have for our object to arrest the inflamma- tion — or to promote the removal of the effused fluid — by blood-letting, and by the exhibition of purgative medicines, and of mercury. The worst case of this kind that I ever witnessed occurred in a boy of fifteen, the son of a tradesman in my neigh- bourhood. He had had scarlet fever, mildly, and had got well, or nearly well, of it, as he believed ; and he went, one evening, into his father's stable, and stayed there some time in the cold, during the period of desquamation. A day or two afterwards he began to have headache, and in a few hours more was seized with convulsions of one side of the body, coma, and at length hemiplegia ; and his face and extremi- ties became at the same time anasarcous. A large quantity of blood vi'as taken from his arm, he was cupped on the temples, and took mercury, till in a short space of time he was profusely salivated. Under this treatment the coma and dropsy rapidly disappeared, and he presently recovered the use of his palsied limbs, and got quite well. I make no doubt that some effusion took place within the cranium, as well as into the subcutaneous areolar tissue. The plan of treatment followed in this case, modified according to particular circumstances, is that which I should again pursue, and therefore what I should recommend you to pursue, in similar emer- gencies. You are probably aware that belladonna is believed by many to exert a preventive and protecting influence upon the body against the contagion of scarlet fever. Hah- nemann, the author of the Homoeopathic hypothesis (and thereby of much mischief to mankind), was the first to assert this. It is said that belladonna administered in small doses causes sometimes a rash resembhng that of scarlatina. It certainly is apt to produce dryness and redness of the fauces. I know nothing by my own expe- rience of the alleged conservative power of this vegetable ; but, in the small quan- tities recommended, there can be no harm in trying h, provided that its employment does not lead to a neglect of other precautions. Three grains of the extract of bel- ladonna are dissolved in an ounce of distilled water; and three drops of the solution are given twice daily to a child under twelve months old, and one drop more for every year above that age. It is affirmed that if this remedy does not prevent the disease, it will render it mild ; and that if it be taken four or five days before exposure to the contagion, the resulting scarlatina never proves fatal. [The question in relation to the prophylactic properties of the belladonna in this disease is a highly interesting one. The severe and fatal character of scarlet fever, particularly when it occurs as an epidemic, renders every means of prevention that can be depended upon with any degree of certainty, of vast importance. In proof of the power of the belladonna to guard those who have been placed under its influence from an attack of scarlatina, we have certainly some very strong and respectable testimony. In a paper published by Bayle, in 1830, it is stated that of 2027 individuals to whom the belladotma was adminis- tered, 1948 were preserved from scarlet fever, and 79 were attacked. Dusterberg reports, tliat all who were placed under the influence of the belladonna for the space of two weeks, were preserved from the scarlet fever. In order to ascertain the real value of the article, he purposely omitted to administer it to one child in ea,ch family, and this one alone, according to his report, was seized with the disease. He adds, however, that occasionally a child who had only been taking the remedy during three or four days, was attacked, but the fever was in such cases always mild, and often only manifested its presence by the occurrence of desquamation. Zeuch, physician to the Miliary Hospital for Children, in Tyrol, after 84 of the cliildren were attacked with scarlet fever, was induced to try the prophylactic powers of belladonna on the remaining 61 children: with a single exception, all of these were preserved from the fever, although it prevailed all around them. Schenk, Berndt, Kiihler, JVIeglin, De Lens, and many other respectable practitioners, speak in equally high terms of the preservative properties of the belladonna. We have ourselves given the belladonna to a number of children, on several occasions when the scarlet fever was prevailing epid°mi caily, witli a view of testing its prophylactic powers; but although redness and dryness oi" the throat, and a diffuse scarlet effervescence were produced by it, yet in the majority of cases, we never found it in any instance to exhibit the sliglitest influence in shielding those who took it from an attack of the disease, or in mitigating in any degree its severity. In one case, the efflorescence produced by the belladonna was kept up for forty-eight hours; in a week afterwards the child was attacked bv the fever in its most violent form, and died on the >biir».)i J 004 ERYSIPELAS. day. Recently, however, Dr. Stievenart, of Valenciennes, has published the results of a very extensive trial of the belladonna, as a prophylactic during the prevalence of epidemic scarlatina: Avhich results, if they are correctly stated, and all sources of error have been carefully guarded against in tlie performance of the experiments upon vi^hich they are founded, go very far to prove that the belladonna does actually possess the property of shielding the constitution from an attack of scarlet fever. An epidemic of the disease ravaged, during the winter of 1840-1, several villages in the neighbourhood of Valen- ciennes, when Dr. Stievenart was induced to try the prophylactic properties of belladonna. The fatality of the epidemic was such that 30 had already died out of 96 attacked ; conse- que,ntly any means of prevention was a subject of vast importance. In a small village, out of 250 individuals, 200 took the belladonna, and were all preserved from the attack of scarlet fever. Of the fifty others, 14 were seized with the fever, and four of them died. At the village of Curgies, Dr. Stievenart administered the belladonna to the children at the public school, and allowed them to continue at their lessons, and have free coed and illusiraled, so that the student is not iuJerrupted ia his labors, by the necessity of referring froui oae portion q( tiie volume to another. ANALYTJCAL COMPENDtUM OF MEDICAL SCIENCE, containiag Anatomy, Physiology, Surgery, Midwifery, Chemistry, Materia Medica, Tlierapeutics, and Practice of Medicine. By John Neill, M. D., &ud F. G. S.MiTH, M. D. New and enlarged edition, one thick volume royal 12mo. o[ over 1000 pag^s, with 374 illustrations. I^^ See Neill, p. 24. ABEL (F. AJ, F. C. S. AND C. L. BLOXAM. HANDBOOK OF CHEMISTRY, Theoretical, Practical, and Technical ; with a Recommendatory Preface by Dr. Hofmann. In o«e large octavo volume, extra cloth, of 662 pages, v/ith illustrations. $3 25. It must be understood that this is a work fitted for tiie earnest studeat, who resolves to pursue for lum- eell' a steady searcli into the clieniieal mysteries of creation. For such a student tlie ' Handbook' will prove an excellent guide, since he will find ia it, cot merely the approved modes of analytical investi- gration, b«t laost descriptions of the apparatus ne- eesBary, with such manipulatory details as rendered Faraday's ' Cliemical Manipulations' so valuable at tlie time of its publication. Beyond this, the im- portauce of the work is increased by tlie introduc- tiim of much of the technical chemistry of the manu- factory. — Df. Hofnianx,'' s Fveface. ASHWELL (SAMUEL), M. D., Obstetric Physiciaa acd Lecturer to Guv's Hospital, London. A PRACTICAL TKEATISE ON THE DISEASES PECULIAR TO WOMEN. illustrated by Cases derived from Hospital and Private Practice. Tliird American, from the Third and revised London edtlioJi. I« one octavo v^olume, extra cloth, of 52S pages. (Lately Piib- U-sked.) $3 00. The most useful practical work oa the subject in Che English language. — Boston Med. and Surg. Journal. The most able, and certainly] the most etatidard and practical, work on female diseases that we have yet seea. — Medico-C hirurgical Review. The young practitioner will find it invaluable, while tiioee who have had most experience will yet find Boraething to learn, and much to commend, in a l)ook which shows so much patient observaticm, practical skill, and sound sense. — British and Fo- reign Med. Review. We commend it to our readers as the best practi- cal treatise on the subject which has yet appeared. — London Lancet. ARNOTT (NEILL), M. D. ELEMENTS OF PHYSICS; or Natural Philosophy, General and Medical. Written lor universal use, in plain or non-technical language. A new edition, by Isaac Hays, M. D. Complete in otje octavo volume, leather, ol' 484 pages, with about two hundred illustra- tions. ^2 6U. BENNETT (HENRY), M. D. A PRACTICAL TREATISE ON INFLAMMATION OF THE UTERUS, ITS CERVIX AND APPENDAGES, and on its connection with Uterine Disease. Fourth American, from the third and revised London edition. To which is added {July, 1856), a K kview OF THE PiiESENT State OF Uterine Pathology. In cuie neat octavo volume, extra cloth, of r)00 pages, with wood-cuts. $2 00. The addition of the "Review" presents the most recent aspects of the questions discussed in tids well-known work, bringing it down to the latest moment. This edition has beea carefully revised and altered, | When, a (e\v years back, the first edition of the and various additions have been made, which render present work was published, the subject was one al- it more complete, and, if possible, more worthy of most entirely unknown to the obstetrical celebrities the high appreciaticxi in wliicli it is held by the i of the day ; and even now we have reason to know medical profession throughout the world. A copy that the bulk of the profession are not fully alive to should be in the possession of every phyatciaa. — the importance and frequency of the dfsease of which it takes cognizance. The present edition is so much enlarged, altered, and improved, that it can scarcely be considered tlie same work.— iJr. lianlcing's Ab- stract. Charleston Med. Journal and Review We are firmly of opinion that in proportion as a. knowledge of uterine diseases becomes more appre- ciated, this work will be proportionably established as a text-book in tke profession. — The Lancet. | Also, just ready, by the same author, and for sale separate, A REVIEW OF THE PRESENT STATE OF UTERINE PATHOLOGY. 1 small vol. Svo. 50 cents, in flexible cloth. In this little work, which can be had either in connection with the "Practical Treatise," or separate, the author presents his latest views with regard to the various doctrines which have re- cently been brought forward on this interesting question, under the following heads : — Chap. .Preliminary. II. Sketch of Uterine Pathology. III. Objections. IV. The Leucorrhoea Theory — the Syphilis Theory — the Ovarian Theory. V. The Displacement Theory. VI. Summary. BLANCHARD & LEA'S MEDICAL BROWN (ISAAC BAKER), Surgeon-Accoucheur to St. Mary's Hospital, &c. ON SOME DISEASES OF WOMEN ADMITTING OF SURGICAL TREAT- MENT. With handsome illustrations. One vol. 8vo., extra cloth. {Now Ready.) $L 60. Mr. Brown has earneil for himself a high reputa- anil merit the careful attention of every surgeon- tion in the operative treatment of sundry diseases 1 accoucheur. — Association Journal. and injuries to which females are peculiarly subject, i ,,^ , i -^ ,■ • „ i- ^u- v u , '. '".1""^ ^ ,„„,.i, ,u.'i if ,c or, irr,,„„.t.,v,t Wb lavB HO hesitatioH in recommending this book ^^' e can trulv say ot his worK that it is an important I . .^i <• i ii •■ /• n i i addition to obstetrical literature. The operative : '" ^'f c^^^'^f"' ""/"tion of a 1 surgeons who make suggestions and contrivanoes which Mr. Brown d.- , fe.rtile complaints a part of heirstudyandpract.ee. scnbes, exhibit much practical sagacity and ^i,ni, -Dublin Quarterly .Journal. BENNETT (J. HUGHES), M.D., F. R. S. E., Professor of Clinical Medicine in the University of Edinburgh, een brought, from the most various sources, to conduce to its completeness, of the lucid- ity of the reasoning it contains, or of the clearness of language in which the whole is clothed. Not the profession only, but the scientific world at large, must feel deeply indebted to Dr. Carpenter for this great work. It must, indeed, add largely evem to his high reputation. — Medital Times. AND SCIENTIFIC PUBLICATIONS. CARPENTER (WILLIAM B.), M . D., F. R. S., Examiner in Physiology and Comparative Anatomy in the University of London. {Now Ready, June, 1S56.) THE MICROSCOPE AND ITS REVELATIONS. With an Appendix con- taining the Applications of the Microscope to Clinical Medicine, fcc. By F. G. Smith, M. D Illustrated by four hundred and thirty-lour beautiful engravings on wood. In one large and ver- handsome octavo volume, of 724 pages, extra cloth, $4 00 ; leather, $4 50. Dr. Carpenter's position as a microscopist and physiologist, and his great experience as a teacher, emuiently qualify him to produce what has long been wanted — a good text-book on the practical use of the microscope. In the present volume his object has been, as stated in his Preface, " to combine, within a moderate compass, that information with regard to the use of his ' tools,' which is most essential to the working microscopist, with such an account of the objects best fitted for his study, as might qualify him to comprehend what he observes, and might thus prepare him to benefit science, whilst expanding and refreshing his ownmind " That he has succeeded in accom- plishing this, no one acquainted with his previous labors can doubt. The great importance of the microscope as a means of diagnosis, and the number of microsco- pists who are also phy.-^icians, have induced the American publishers, with the author's approval, to add an Appendix, carefully prepared by Professor Smith, on the applications of the instrument to clinical medicine, together with an account of American Microscopes, their modifications and accessories. This portion of the work is illustrated wilh nearly one hundred wood-cuts, and, it is hoped, will adapt the volume more particularly to the use of the American student. Every care has been taken in the mechanical execution of the work, which is confidently pre- sented as in no respect inferior to the choicest productions of the London press. The mode in which the author has executed his ikitentions may be gathered from the following condensed synopsis of the CONTENTS. Introduction — History of the Microscope. Chap. I. Optical Principles of the Microscope. Chap. II. Construclion of the Microscope. Chap. III. Accessory Apparatus. Chap. IV. Management of the Microscope Chap. V. Preparation, Moimting, and Collection of Objects. Chap. VI. Microscopic Forms of Vegetable Life — Protophytes. Chap. VII. Higher Cryptoga- mia. Chap. VIII. Piianerogamic Plants. Chap. IX. Microscopic Forms of Animal Life — Pro- tozoa — Animalcules. Chap. X. Foraminifera, Polycystina, and Sponges. Chap. XI. Zoophytes. Chap. XII. Echinodermala. Chap. XIII. Polyzoa and Compound Tunicata. Chap. XIV. Molluscous Animals Generally. Chap. XV. Annulosa. Chap. XVI. Crustacea. Chap. XVII. Insects and Arachnida. Chap. XVIII. Vertebrated Animals. Chap. XIX. Applications of the Microscope to Geology. Chap. XX. Inorganic or Mineral Kingdom — Polarization. Appendix. Microscope as a means of Diagnosis — Injections — Microscopes of American Manufacture. Those who are acquainted with Dr. Carpenter's previous writings on Animal and Vegetable Physio- logy, will fully understand how vast a store of know- ledge he is able to bring to bear ujion so comprehen and even those who have no previous acquaintance with the construction or uses of this instrument, will find abundance of information conveyed in clear and simple language. — Med. Times and Gazette. May, lb56. sive a subject as the revelations of the microscope ; BY THE SAME AUTHOR. ELEMENTS (OR MANUAL) OF PHYSIOLOGY, INCLUDING PHYSIO- LOGICAL ANATOMY". Second American, from a new and revised London edition. With one hundred and ninety illustrations. In one very handsome octavo volume, leather, pp. 566 $3 00. In publishing the first edition of this work, its title was altered from that of the London volume, by the substitution of the word " Elements" for that of " Manual," and with the author's sanction tne title of "Elements" is still retained as being more expressive of the scope of the treatise. To say that it is the best manual of Physiology i Those who have occasion for an elementary trea- now before the public, would not do sufficient justice tise on Physiology, cannot do better than to possess to the author. — Buffalo Medical Journal. themselvesof the manual of Dr. Carpenter. Medical In his former works it would seem that he had Examiner. exhausted the suliject of Physiology. In the present. The best and most complete expose of modern hegivestheessence,a8itwere, of the whole. — N. Y.\ Physiology, in one volume, extant in the English Journal of Medicine. | language. — St. Louis Medical Journal. BY THE SAME AUTHOR. {Preparing.) PRINCIPLES OF GENERAL PHYSIOLOGY, INCLUDING ORGANIC CHEMISTRY AND HISTOLOGY. Wilh a General Sketch of the Vegetable and Animal Kingdom. In one large and very handsome octavo volume, with several hundred illustrations. The subject of general physiology having been omitted in the last editions of the author's " Comr parative Physiology" and " Human Physiology," he has undertaken to prepare a volume which shall present it more thoroughly and fully than has yet been attempted, aiid which may be regarded as an introduction to his other works. BY THE SAME AUTHOR. A PRIZE ESSAY ON THE USE OF ALCOHOLIC LIQUORS IN HEALTH AND DISEASE. New edition, with a Preface by D. F. Condie, M. D., and explanations of scientific words. In one neat I2mo. volume, extra cloth, pp. 178. [Just Issued.) 50 cents. CHELIUS (J. M.), M. D., Professor of Surgery in the University of Heidelberg, &c. A SYSTEM OF SURGERY. Translated from the German, and accompanied with additional Notes and References, by John F. South. Complete in three very large octavo volumes, of nearly 2200 pages, strongly bound, with raised bands and double titles. $10 00. BLANCHARD & LEA'S MEDICAL CONDIE (D. F.), M. D., &.c. A PRACTICAL TREATISE ON THE DISEASES OF CHiIdREN. Fourth edition, revised and augmented. In one large volume, 8vo., leather, of nearly 750 pages. $3 00. From the Author's Preface. The demand for another edition has afflirded the author an opportunity of again subjecting the entire treatise to a careful revision, and of incorporating in it every important observation recorded since the appearance of the last edition, in reference to the pathology and therapeutics of the several diseases oi which it treats. In the preparation of the present edition, as in those which have preceded, while the author has aj^proprialed to his use every important fact that he has found recorded in the works of others, having a direct bearing upon either of the subjects of which he treats, and the numerous valuable observations — pathological as well as practical — dispersed throughout the pages of the medical journals of Europe and America, he has, nevertheless, relied chiefly upon his own observations and experience, acquired during a long and somewhat extensive practice, and under circumstances pe- culiarly well adapted for the clinical stud}' of the diseases of early life. Every species ol hypothetical reasoning has, as much as possible, l>een avoided. The author lias endeavored throughout the work to conline himself to a simple statement of well-ascertained patho- logical facts, and plain therapeutical directions — his chief desire being to render it what its title imports it to be, a practical treatise on the diseases of children. Dr. Condie's scliolarship, acumen, industry, and : We feel assured from actual experience that no practical sense are manifested in this, as in all his ! physician's library can be complete without a copy- numerous contributions to science. — Dr. Holmes''s \ of this work. — N. Y. Journal of Medicine. Report to the American Medical Association. I . .. , , ... , ,. , , . T-v ^ J- ^ A veritable paediatric encyclopaedia, and an honor Taken as a whole, in our judgment. Dr. Condie s j^ American medical literature.— OAio Medical and Treatise is the one from the perusal of which the practitioner in this country will rise with the great- est satisfaction. — Western Journal of Medicine and Surgery. One of the best works upon the Diseases of Chil- dren in the English language. — Western Lancet. Perhaps the most full and complete work no^v be- Surgical Journal. We feel persuaded that the American medical pro- fession wiU soon regard it not only as a very good, but as the veky best " Practical Treatise on the Diseases of Children." — American Medical Journal. We pronounced the first edition to be the best fore the profession of tlie United States; indeed, we j work on the diseases of children in the English may say in the English language. It is vastly supe- i language, and, notwithstanding all that has been rior to most of its predecessors. — Transylvania Med. I published, we still regard it iu that light. — Medical Journal. I Examiner. CHRISTISON (ROBERT), M. D., V. P. R. S. E., &c. A DISPENSATORY; or, Commentary on the Pharmacopoeias of Great Britain and the United States; comprising the Natural History, Description, Chemistry, Pharmacy, Ac- tions, Uses, and Doses of the Articles of the Materia Medica. Second edition, revised and im- proved, with a Supplement containing the most important New Remedies. With copious Addi- tions, and two hundred and thirteen large wood-engravings. By R. Eglesfeld Griffith, M. D. In one very large and handsome octavo volume, leather, raised bands, of over 1000 pages. $3 50. It is not needful that wt should compare it with this branch of knowledge which the student has a the other pharmucopceias extant, which enjoy and right to expect in such a work, we confess the omis- inerit the confidence of the profession : it is enough sion has escaped our scrutiny. We cordially recoin- to say that it appears to us as perfect as a Dispensa- mend this work to such of our readers as are in need tory, in the present state of pharmaceutical science, of a Dispensatory. They cannot make choice of a could be made. If it omits any details pertaining to , better. — Western Journ. of Medicine and Surgery. COOPER (BRANSBY B.), F. R. S. LECTURES ON THE PRINCIPLES AND PRACTICE OF SURGERY. In one very large octavo volume, extra cloth, of 750 pages. S3 00. COOPER ON DISLOCATIONS AND FRAC- TURKS OF THE JOINTS —Edited by Bkansby D. Cooper, F. R. S., &c. With additional Ob- servations by Prof. J. C. Warren. A new Ame- rican edition. In one handsome octavo volume, extra cloth, of about 500 iiages, with numerous illustrations on wood. $3 '25. COOPER ON THE ANATOMY AND TREAT- MENT OF ABDOMINAL HERNIA. One large volume, imperial Svo., extra cloth, with over 130 lithographic figures. $2 50. COOPER ON THE ANATOMY AND DISEASES OF THE BREAST, with twenty-five Miscellane- ous and Surgical Papers. One large volume, im- perial 8vo., extra cloth, with 252 figures, on 36 plates. S2 50. COOPER ON THE STRUCTURE AND DIS- EASES OF THE TESTIS, AND ON THE THYMUS GLAND. One vol. imperial Svo., ex- tra cloth, with 177 figures on 29 plates. $.2 00. COPLAND ON THE CAUSES, NATURE, AND TREATxMENT OF PALSY AND APOPLEXY. In one volume, royal 12mo., extra cloth, pp. 32G. 60 cents. CLYMER ON FEVERS: THEIR DIAGNOSIS, PATHOLOGY, AND TREATMENT In one octavo volume, leather, of GOO pages. $1 50. COLOiVIBAT DE L'lSERE ON THE DISEASES OF FE.MALES, and on the special Hygiene of their Sex. Translated, with many Notes and Ad- ditions, by C. D. Meigs, M. D. Second edition, revised and improved In one large volume, oc- tavo, leatlier, with numerous wood-cuts. pp. 720. S3 50. CARSON (JOSEPH), M. D., Professor of Materia Medica and Pharmacy in the University of Pennsylvania. SYNOPSIS OF THE COURSE OF LECTURES ON MATERIA MEDICA AND PHARMACY, delivered in the University of Pennsylvania. Second and revised edi- tion. In one very neat octavo volume, extra cloth, of 208 pages. (Now Ready.) $1 50. AND SCIENTIFIC PUBLICATIONS. CHURCHILL (FLEETWOOD), M. D., M. R. r. A. ON THE THEORY AND PRACTICE OF MIDWIFERY. A new American, from the last and improved English edition. Edited, witli Notes and Additions, by D. Francis CoNDiE, M. D., author of a "Practical Treatise on the Diseases of Children," &c. With 139 illustrations. In one very handsome octavo volume, leather, pp.510. $3 00. No work holds a higher position, or is more de- servinn;' of being placed in the hands of the tyro, the advanced student, or the practitioner. — Medical Exaviiner . To bestow praise on a book that has received such marked approbation would be superfluous. We need only say, therefore, that if the first edition was thought worthy of a favorable reception by the medical public, w^e can confidently aflirm that this will be found nuieh more so. The lecturer, the practitioner, and the student, may all have recourse to its pages, and derive from their perusal much in- terest and instruction in everything relating to theo- retical and practical midwifery. — Dublin Quarterly Journal of Medical Science. A work of very great merit, and such as we can confidently recommend to the study of every obste- tric practitioner. — London Medical Gazette. This is certainly the most perfect system extant. It is the best adapted for the purposes of a text- book, and that which he whose necessities confine him to one book, should select in preference to all others. — Southern Medical and Surgical Journal. The most popular work on midwifery ever issued from the American press. — Charleston Med. Journal. Were we reduced to the necessity of having but one work on midwifery, and permitted to choose, •ve would unhesitatingly take Churchill. — Western Med. and Surg. Journal. It is impossible to conceive a more useful and ■"gant manual than Dr. Chnrehill's Practice of Iidwifery. — Provincial Medical Journal. Certainly, in our opinion, the very best work on the subject which exists. — N. Y. Annalist. Previous editions, under the editorial supervision of Prof R. M. Huston, have been received with marked favor, and they deserved it ; but this, re- printed from a very late Dublin edition, carefully revised and brought up by the author to the present; time, does present an unusually accurate and able exposition of ever)' important particular embraced in the department of midwifery. * * The clearness, directness, and precision of its teachings, together with the great amount of statistical research which its text exhibits, have served to place it already in the foremost rank of works in this department of re- medial science. — N. O. Med. and Surg. Journal. In our opinion, it forms one of the best if not the very best text-book and epitome of obstetric science which we at present possess in the English lan- guage. — Montlily Journal of Medical Science. The clearness and precision of style in which it is written, and the greatamount of statistical research which it contains, have served to place it in the first rank of works in tliis departmentof medical science. — N. Y. Journal of Medicine. Few treatises will be found better adapted as a text-book for the student, or as a manual for the frequent consultation of the young practitioner. — American Medical Journal. BY THE SAME AUTHOR. (Now Readi/, 1856.) ON THE DISEASES OF INFANTS AND CHILDREN. Second American Edition, revised and enlarged by the author. Edited, with Notes, by W. V. Keating, M. D. In one large and handsome volume, extra cloth, of over 700 pages. $3 00, or in leather, $3 2-5. In preparing this work a second time for the American profession, the author has spared no labor in giving it a very thorough revision, introducing several new chapters, and rewriting others, while every portion of the volume has been subjected to a severe scrutiny. The efforts of the American editor have been directed to supplying such information relative to matters peculiar to this country as might have escaped the attention of the author, and the whole may, there- fore, be safely pronounced one of the most complete works on the subject accessible to the Ame- rican Profession. By an alteration in the size of the page, these very extensive additions have been accommodated without unduly increasing the size of the work. A few notices of the Ibrmer edition are subjoined : — We regard this volume as possessing more claims to completeness than any other of the kind with which we are acquainted. Most cordially and ear- nestly, therefore, do we commend it to our profession- al brethren, and we feel assured that the stamp of their approbation will indue time be impressed upon it. After an attentive perusal of its contents, we hesitate not to say, that it is one of the most com- prehensive ever written upon the diseases of chil- dren, and that, for coi)iousnessof reference, extent of research, and perspicuity of detail, it is scarcely to be equalled, and not to be excelled, in any lan- guage. — Dublin Quarterly Journal. After this meagre, and we know, very imperfect notice of Dr. Churchill's work, we shall conclude by saying, that it is one that cannot fail from its co- piousness, extensive research, and general accuracy, to exalt still higher the reputation of the author in this country. The American reader will be particu- larly pleased to find that Dr. Churchill has done full justice tliroughout his w^ork to the various American authors on tliis subject. The names of Dewees, Eberle, Condie, and Stewart, occur on nearly every page, and these authors are constantly referred to by the author in terms of the highest praise, and with the most liberal courtesy. — The Medical Examiner. The present volume will sustain the reputation acquired by the author from his previous works. The reader will find in it full and judicious direc- tions for the management of infants at birth, and a compendious, but cle^r account of the diseases to which children are liable, and the most successful mode of treating them. VVe must not close this no- tice without calling attention to the author's style, which is perspicuous and polished to a degree, we regret to say, not generally characteristic of medical works. We recommend the work of Dr. Churchill most cordially, both to students and practitioners, as a valuable and reliable guide in the treatment of the diseases of children. — Am. Journ. of the Med. Sciences. We know of no work on this department of Prac tical Medicine which presents so candid and unpre- judiced a statement or posting up of our actual knowledge as this. — N. Y. Journal of Medicine. Its claims to merit both as a scientific and practi- cal work, are of the highest order. Whilst we would not elevate it above every other treatise on the same subject, we certainly believe that very few are equal to it, and none superior. — Southern Med. and Surgical Journal. BY THE SAME AUTHOR. ESSAYS ON THE PUERPERAL FEVER, AND OTHER DISEASES PE- CULIAR TO WOMEN. Selected from the writings of British Authors previous to the close of the Eighteenth Century. In one neat octavo volume, extra cloth, of about 450 pages. $2 50. 10 BLANGHAKD & LEA'S MEDICAL CHURCHILL (FLEETWOOD), M. D., M. R. I , A,, &.c. OX THE DISEASES OF WOMEN; including those of Pregnancy and Child- bed. A new American edition, revised by the Author. With Notes and Additions, by D Fran- cis CoNDiE, M. D., author of "A Practical Treatise on the Diseases of Children." Li one large and handsome octavo volunme, with wood-cuts, leather, pp. 684. S3 00. ■\Venow reg;retfully take leave of Dr. ChurcliiirB book. Had our typographical limits permitted, we should gladly have borrowed more from its riolily stctrines therein contained more generally recognized, and mijre uni- versally earned out in practice. — N. Y. Journal of Medicine. We know of no author who deserves that appro- bation, on " the diseases of females," to the same extent that Dr. Churchill does. His, indeed, is the only thorough treatise we knnw of on the subject; and it may be commended to practitioners and stu- dents as a masterpiece in its particular department. The former editions of this work have been com- mended strongly in this journal, and they have \von their way to an extended, and a well-deserved popu- larity. This fifth edition, before us, is well calcu- lated to maintain Dr. Churchill's high reputation. It was revised and enlarged by the author, for his American publishers, and it seems to us that there ig scarcely any species of desirable information on ite subjects that may not be found in this work. — Tin Western Journal of Medicine and Surgery. We are gratified to announce a new and revised edition of Dr. Churchill's valuable work on the dis- eases of females We have ever regarded it as one of the very best works on the subjects embraced within its scope, in the English language; and the present edition, enlarged and revisetl by the author, renders it still more entitled to the confidence of the profession. The valuable notes of Prof. Huston have been retained, and contribute, in no small de- gree, to enhance the value of the work. It is a source of congratulation that the publishers have permitied the author to be, in this instance, his own editor, thus securing all the revision which an author alone is capable of making. — The Western Lancet. Asa comprehensive manual for students, or a work of reference for practitioners, vee only speak with common justice when we say that it surpasses any other that has ever issued on the same sub- ject from the British press. — The Dublin Quarterlp Journal. DICKSON (S. H.>, M. D., Professor of Institutes and Practice of Medicine in the Medical College of South Carolina. ELEMENTS OF MEDICINE; a Compendious View of Pathology and Thera- pentics, or the History »nd Treatment of Diseases. In one large and handsome octavo volume, of 7-50 pages, leather (No^v Ready.) $-3 75. As an American text-book on the Practice of Medicine for the student, and as a condensed work of reference for the practitioner, this volume will have strong claims on the attention of the prolession. Few physicians have had wider opportunities than the author for obsen'ation and experience, and few perhaps have used them belter. As the result of a life of study and practice, therefore, the present volume will doubtless be received with the welcome it deserves. This book is eminently what it professes to be; a I clear and accurate descriptions, purity, and simpli- distmguishcd merit in these days. Designed for city of style, and soundness of precept, the reader " Teachers and Students of Medicine," anil admira- will find much to admire and adopt, and lot a little bly suited totheir wants, \\'e think it will be received, \ that calls for deep reflection. We cordially recom- on its own merits, with a hearty welcome. — Boston mend this volume to our readers, vrhether old prac- Med. and Surg. Journal. titioners or students, for we take it that the physician Indited by one of the most accomplished writers should always be a student.— ^wericaw Lancet. of our country, as well as by one who has long held | Prof. Dickson's work supplies, to a great extent, a high position among teachers and practitioners of! a desideratum long felt in American medicine. — iV. medicine, this ^vork is entitled to patronage and O. Med. and Surg. Journal. careful study. The learned author has endeavored to condense in this volume most of the practical matter contained in his former productions, so as to adapt it to the use of those who have not time to devote to more extensive works. — Southern Med. and Surg. Journal. We can strongly recommend Dr. Dickson's work to our readers as one of interest and practical utility. Estimating this work according to the purpose for which it is designed, we must think highly of its merits, and we have no hesitation in predicting for ita favorable reception by both studentsand teachers. Not professing to be a complete and comprehensive treatise, it will not be found full in detail, nor filled with discussions of theories and opinions, but em- bracing all that is essential in theory and practice, ■well deserving of a place in their libraries as a book I it is admirably adapted to the\vants of the American of referenc* ; and we especially commt-nd the first part as presenting an admirable outline of the princi- ples of medicine. — Dublin Quarterly Journal, Ftb. 1S50 This volume, while as its title denotes it is a compendious view, is also a comprehensive system of practice, perspicuously and pleasantly written, and admirably suited to engage the interest, and in- struct the reader. — Peninsular Journal of Medicine, Jan. 1850. This volume is designed as a text-book for teachers and students; but its merits extend far beyond its modest dedication ; It is a complete treatise upon me- dicine, and one that will stand the test of years. The arrangement is simple, a feature oflentimes obscured in otherwise excellent works. This Treatise is a valuableaddition to our medical literature, and in the | Lancet. student. Avoiding all that is uncertain, it presents more clearly to the mind of the reader that which is established and verified by experience. The varied and extensive reading of the author is conspicuously apparent, and all the recent improvements and dis- coveries in therapeutics and pathology are chroni- cled in its pages. — Charleston Med. Jcyumal. In the first part of the work the subject of gene- ral pathology is presented in outline, giving a btau- tiful picture of its distinsruishing features, and throughout the succeeding cliapters we find that he has kept scrupulously within the bounds of sound reasoning and legitimate deduction. Upon the whole, we do not hesitate to pronounce it a superior work in its class, and that Dr. Dickson merits a place in the first rank of American writers. — Western DAY'S PRACTICAI- TREATISE ON THE DO- .^lESTIC MANAGEMENT AND MORE IM- PORTANT DISEASES OF ADVANCED LIFE. One volume, octavo, cloth, 226 pages. SI 00. DE JONGH ON COD-LIVER OIL, comparatively considered, with its Chemical and Therapeutic Properties. In one 12mo. vol., ex. cloth. 75 cents. AND SCIENTIFIC PUBLICATIONS. 11 DRUITT (ROBERT), M.R. C.S., &.c. THE PRINCIPLES AND PRACTICE OF MODERN SURGERY. A new American, from the improved London edition. Edited by F. W. Sargent, M. D., author of "Minor Surg-ery," &rc. Illustrated with one hundred and ninety-three wood-engravings. In one very handsomely printed octavo volume, leather, of 576 large pages. $3 00. Dr. Druitt's researches into the literature of his subject have been not only extensive, but well di- rected ; tlie most discordant authors are fairly and impartially quoted, and, while due credit is given to each, their respective merits are weighed with an unprejudiced hand. The grain of wheat is pre- served, and the chaff is unmercifully stripped off. The arrangement is simple and philosophical, and the style, though clear and interesting, ie so precise, that the book contains more inform.ition condensed into a few words than any other surgical \vork with which we are acquainted. — London Medical Tinus and Gazette. No work, in our opinion, equals it in presenting BO much valuable surgical matter in so small a compass. — St. Louis Med. and Surgical Journal. Druitt's Surgery is too well known to the Ameri- can medical profession to require its announcement anywhere. Prohnbly no work of the kind has ever been more cordially received and extensively circu- lated than this. The fact that it comprehends in a comparatively small compass, all the essential ele- ments of theoretical and practical Surgery — that it ie found to contain reliable and authentic informa- tion on the nature and treatment of nearly all surgi- cal afTeetions — is a sufficient reason for the liberal patronage it has obtained. The editor. Dr. F. W. Sargent, has contributed much to enhance the value of the work, by such American improvements as are calculated more perfectly to adapt it to our own views and practice in this country. It abounds everywhere with spirited and life-like illustrrtions, which to the young surgecm, especially, are of no minor consideration. Every medical man frequently needs just such a work as this, for immediate refer- ence in moments of sudden emergency, when he has not time to consult more elaborate treatises. — The Ohio Medical and Surgical Journal. The author has evidently ransacked every stand- ard treatise of ancient and modern times, and all that is really practically useful at the bedside will be found in a form at once clear, distinct, and interest- ing. — Edinburgh Monthly Medical Journal. Druitt's work, condensed, systematic, lucid, and practical as it is, beyond most works on Surgery accessible to the American student, has had much currency in this country, and under its present au- spices promises to rise to yet higher favor. — Tht Western Journal of Medicine and Surgery. The most accurate and ample resume of the pre- sent state of Surgery that we are acquainted with. — Dublin Medical Journal. A better book on the principles and practice of Surgery as now understood in England and America, has not been given to the profession. — Boston Medi- cal and Surgical Journal. An unsurpassable compendium, not only of Sur- gical, but of Medical Practice. — London Medical Gazette. This ^vork merits our warmest commendations, and we strongly recommend it to young surgeons as an admirable digest of the principles and practice of modern Surgery. — Medical Gazette. It maybe said with truth that the work of Mr. Druitt affords a complete, though brief and con- densed view, of the entire field of modern surgery. We know of no work on tlie same subject having the appearance of a manual, which includes so many topics of interest to the surgeon ; and the terse man- ner in w^hicli each has been treated evinces a most enviable quality of mind on the part of the author, who seems to have an innate power of searching out and grasping the leading facts and features of the most elaborate productions of the pen. It is a useful handbook for the practitioner, and we should deem a teacher of surgery unpardonable wlio did not recommend it to his pupils. In our own opinion, it is admirably adapted to the wants of the student. — Provincial Medical and Surgical Journal. DUNGLISON, FORBES, TWEEDIE, AND CONOLLY. THE CYCLOPEDIA OF PRACTICAL MEDICINE: comprising Treatises on the Nature and Treatment of Disea.ed. is now ready. In one very thick octavo volume, of over nine hundred large double-columned pages, strongly bound in leather, ■with raised bands. $4 00. Every successive edition of this work bears the marks of the industry of the author, and of his determination to keep it fully on a level with the most advanced state of medical science. Thus nearly fifteen thoisand words have been added to it within the last tew years. As a complete Medical Dictionary, therefore, embra6ing over FIFTY THOUSAND DEFINITIONS, in all the branches of the science, it is presented as meriting a continuance of the great favor and popularity which have carried it, within no very long space of time, to a thirteenth edition. Every precaution has been taken in the preparation of the present volume, to render its mecha- nical execution and typographical accuracy worthy of its extended reiintation and universal use. The very extensive additions have been accommodated, without materially increasing the bulk ol the volume by the employment of a small but exceedingly clear type, cast for this purpose. The press has been watched with great care, and every effort used to insiue the verbal accuracy so ne- cessary to a work of this nature. The whole is printed on fine while paper ; and, while thus exhi- biting in every respect so great an improvement over former issues, it is presented at the original exceedingly low price. AVe welcome it cordi.THj'; it is an a(lniiral)le work, ! readers to its peculiar merits; and wre need do and indispensable to all literary niediial men. The i little more tlian state, in reference to the present labor which has been bestowed upon it is something reissue, that, notwithstandinsj the large additions prodigious. The work, however, has now been I previously made to it, no fewer than four thou- done, and we are. happy in the thought that no hu- j sand terms, not to be found in the preceding edi- man beins will have again to undertake the same ! tion, are contained in the volume before us. — gigantic task. Revised and corrected from time to time, Dr. Dunglison's '■ Medical Lexicon" will last for ctnturies.—BTitish and Foreign Med.-Chirurg. Revieio. The fact that this excellent and learned work has passed through eight editions, and that a nintli is rendered necessarj' by the demands of the publi*, affords a sufficient evidence of tlie general apprecia- tion of Dr. Dunglison's labors bythe medical pro- fession in England and America. It is a book which will be of great. service to the student, in teaching him tlie meaning of all the technical terms used in medicine, and will be of no less use to the practi- tioner who desires to keep himself on a level with the advance of medical science. — London Medical Times and Gazette. In taking leave of our author, we feel eompelled | perly appreciated by his own countrymen ; and we to confess that his work bears evidence of almost can only confirm their judgment, by recommending Whilst it is a wonderful monument of its author's erudition and industry, it is also a work of great practical utility, as we can testify from our own experience; for we keep it constantly within oui reach, and make very frequent reference to it, nearly always finding in it the information we seek. — British, and Foreign Med.-Chirurg. Revieio. It has the rare merit that it certainly has no rival in the English language for accuracy and extent of references. The terms generally include short physioliigjcal and pathological descriptions, so that, as the author justly observes, the reader does not possess in this work a mere dictionary, but a book, which, while it instructs him in medieal etymo- logy, furnishes him with a large amount of usefnl information. The author's labors have been pro- incredible labor having been bestowed upon its com position. — Edinburgh Journal of Med. Science. A miracle of labor and industry in one who has written able and voluminous works on nearly every branch of medical science. There couKI be no more useful book to the student or practitioner, in the present advancing age, than one in which would be found, in addition to the ordinary meaning and deri- vation of medical terms — so many of which are of modern introduction — concise descriptions of their this most usel'ul volume to the notice of our cisat- lantic readers. Nomedical library will be complete without it. — London Med. Gazette. It is certainly more complete and comprehensive than any with' which we are acquiiinted in the English language. Few, in fact, could be found belter qualified than Dr. Dunglison for the produc- tion of such a work. Learned, industrious, per- severing, and accurate, he brings to the task all , , , . 1 11 .^1 • 1 ,1 the peculiar talents necessary for its successfuJ explanation and einployment; andall this and much performance; while, at the same time, his fami- more IS contained in the volume bef.ire us It is j Uj^^ity with the writings of the ancient and modern therefore almostas indispensable to the other learned professions as to our own. In fact, to all who may have occasion to ascertain the meaning of any word belonging to the many branches of medicine. From a careful examination of the present edition, we can vouch for its accuracy, and for its bein^ brought quite up to the date of publication ; the autlior states in his preface that hehasadded to it about four thou- sand terms, which are not to be found in the prece- ding <>ne. — Dublin Quarterly Journal of Medical Sciences. On the appearance of the last edition of this valuable work, we directed the attention of our " masters of our art," renders him skilful to note the exact usage of the several terms of science, and the various modificaticms which medical term- inology has undergone with the change of theo- ries or the progress of improvement. — American Journal of the Medical Sciences. One of the most complete and copious known to the cultivators of medieal science. — Boston Med. Journal. The most comprehensive and best English Dic- tionary of medical terms extant. — Buj/alo Medical Journal . BY THE SAME AUTHOR. THE PRACTICE OF I^IEDICINE. A Treatise on Special Pathology and The- rapeutics. Third Edition. In two large octavo volumes, leather, of 1,500 pages. S6 25. ferings of the race.— Boston Medical and Surgical Journal. Upon every topic embraced in the work the latest information will be found carefully posted up. — Medical Examiner. The student of medicine will find, in these two elegant volumes, a mine of facts, a gathering of precepts and advice from the world of experience, that will nerve him with courage, and faithfully It is certainly the most complete treatiseof which we have any knowledge. — Western Journal of Medi- cine and Surgery. One of the most elaborate treatises of the kind direct him in his efforts to relieve the physical suf- ' we have. — Southern. Med. and Surg. JoumcU. AND SCIENTIFIC PUBLICATIONS. 13 DUNGLISON (ROBLEY), M. D., Professor of Institutes of Medicine in tlie JeiTerson iMeilical College, Philadelphia. HUMAN PHYSIOLOGY. Eiglith edition. Thoroughly revised and exten- sively modified and enhuged, with five hundred and thirly-tvvo illustrations. In two larjre and handsomely printed octavo volumes, leather, of about ISOO pag-es. (Just Ready, 185G.) $7 00. In revi-ing this work for its eighth appearance, the author has spared no labor to render il worthy u continuance of the very great favor which has been extended to it by the profession. The whole contents have been rearranged, and to a great extent remodelled ; the" investigations which of late years have been so numerous and so important, have been carefully examined and incoip )rated, and the work in every respect has been brought up to a level with the present slate of the subject. The object of the aullior has been to render it a concise but comprehensive treatise, containing the \Vhole body of phy>iological science, to which the student and man of >cience can at all times refer with the certainly of finding whatever they are in search of, fully presented in all its aspects; and on no former edition has the author bestowed more labor to secure this re>ult. A similar improvement will be found in the typographical execution of tlie volumes, which, in this respect, are superior to their predecessors. A large number of additional wood-cuts have been introduced, and the series of illustrations has been greatly modified by the substitution of many new ones for such as were not deemed satisfactory. By an enlargement of the page, these very considerai)le additions have been accommodated without increasing the size of the volumes to an extent to render them unwieldy. It has long since taken rank as one of the medi- cal classics of our language. To say that it is by far the best text-book of physiology ever pul)lisheJ in this country, is but echoing the general testi- mony of the profession. — N. Y. Journal of Medicine. There is no single book we would recommend to the student or physician, with greater confidence than the present, because in it will be found a mir- ror of almost every standard pliysiologieal work of the day. We most cordially recommend the work to every member of the profession, and no student should be without it It is the completest work on Physiology in the English language, and is highly creditable to the author and publishers. — Canadian Medical Journal. The most complete and satisfactory system of Physiology in the English language. — Amer. Med. Journal. The best work of the kind in the English lan- guage. — Sillinian's Journal. The most full and complete system of Physiology in our language. — Western Lancet. BY THE SAME AUTHOR. GENERAL THERAPEUTICS AND MATERIA MEDICA; adapted for a Medical Text-book. Fit'lh edition, much improved. With one hundred and eighty-seven illus- trations. In two large and handsomely printed octavo vols., leather, of about 1100 pages. $6 00. Asa text-book for students, for whom it is par- ticularly designed, we know of none superior to it. — St. Louii Medical and Surgical Journal. In this work of Dr. Dunglison,we recognize the same untiring industry in the collection and em- bodying of facts on the several subjects of which he treats, that has heretofore distinguished him, and we cheerfully point to these volumes, as two of the most interesting that we know of. In noticing tlie additions to this, the fourth edition, there is very little in the periodical or annual literature of the profession, published in the interval which has elapsed since the issue of the first, that lias escaped the careful search of the author. Asa book for reference, it is invaluable Charleston Med. Jour- nal and Review. It may be said to be the work now upon the sub- jects upon which it treats. — Western Lancet. It purports to be a new edition, but it is rather a new book, so greatly has it hern improved, both in the amount and quality of the matter which it contains. — N. O. Medical and Surgical Journal. We bespeak for this editi(m, from the profession. an increase of patronage over any of its former ones, on account of its increased merit. — N. Y. Journal of Medicine. We consider this work unequalled. — Boston Med. and Surg. Journal. BY THE SAME AUTHOR, {A new 'Edition.) NEW REMEDIES, WITH FORMULAE FOR THEIR PREPARATION AND ADMIXISTKATJON. Seventh edition, with extensive Additions. In one very large octavo volume, leather, of 770 pages, {Just Ready, May, 185G.) §;.3 75. Another edition of the " New Remedies" having been called for, the author has endeavored to add everything of moment ihat has appeared since the publication of the la>t edition. The chief remedial lueai.s which have obtained a place, for the first time, in this volume, either owing to their having been recently introduced into pharmacology, or to their having received novel applications — and which, con^equently, belong to the category of "New ILemedies" — are the fol- lowing : — ^ Apiol, Caffein, Carbazotic acid. Cauterization and cathet'-rism of the larynx and trachea, Cedron, Cerium, Chloride of bromine. Chloride of iron. Chloride of sodium, Cinchonicine, Cod-liver olein. Congelation, Eau de Pagiiari, Galvanic cautery, Hydriodic ether. Hyposulphite of soda and silver, Inunction, Iodide of sodium. Nickel, Permanganate of potassa, Phosphate of lime, Pumpkin, Quinidia, Rennet, Saccharine carbonate of iron and manganese. Santonin, Tellurium, and Trauinaticnie. The articles treated of in the former edilions will be found to have undergone considerable ex- pansion in this, in order that the author might be enabled to introduce, as far as practicable, the results of the subsequent experience of others, as well as of his own observalion and relleclion; and to make the w^ork still more deserving of the extended cireulatimi with which the preceding editions have been favored by the profession. By an enlargement of the page, the numerous addi- tions have been incorporated without greatly increasing the bulk of the volume. — Preface. One of the most useful of the aiillior's works. — Southern Medical and Surgical Journal. This elaborate and useful volume should be found in every medical library, for as a book of re ference, for physii'ians, it is unsurpassed by any other work in existence, and the double index for diseases and for remedies, will be found greatly to enhance its value. — ISew York Med. Gazette. The great learning of the author, and his remark- able industry in pushing his researches into every source whence information is derivable, h;is enabled him to throw together an extensive mass of facts and statements, accompanied by full reference to authorities; which last feature renders the work practically valuable to investigators who desire to examine the original papers. — The American Journal of Pharmacy. 14 BLANCHARD &; LEA'S MEDICAL ERICHSEN (JOHN), Professor of Surgery- in University Co3)ege, London, &e. THE SCIENCE AND ART OF SURGERY; being a Treatise on Surgical Injuries, Diseasks, and Operations. Edited by John H. Bkinton, M. D. Illustrated with three luindred and eleven engravings on wood. In one large and handsome octavo Tolume, oi over nine hundred closely printed pages, leather, raised band.s. §4 25. It is, in our humb)e joHgment. decideilly llie best 1 rarely eneounter cases requiring surgieal raanage- book of the kind in the English (ariguage. Strange meat. — Stethoscope. that just such liooks are notoflener pro- Brilain. Indeed, it is a malterof great astonishnnent. hut no less true than astonishing, that oi the many ■works on surgerj- repnblished in ihis cnontry wijhin the last fifteen or twenty years as te.xtbooks for medical students, this is the oi.ly one ihat even ap- i best single volume now exiam on the sul.je proximaiesto ihe fiilnlinenl of the peeunar wants of | „.,,), „reai pleasure we add ii to our text b- young men just entering upon the siiidy of this ti ranch of the profession. — WtsiemJour .of Med. ani Surgery. Its value is greatly enhanced by a very copious well-arransed index. We regard this as one of the most valuable contributions to modern surgery. To one entering his tioviiiate of practice, we regard ii ibemosi serviceable guide which he can consult. He will find a iulnessof detail leadinghim through every step of the operation, and not deserting him until the final issue of the case is decided. For the same rea- .?on we recommend it to those whose routine of prac- tice lies ill such parts of ilie eouiitry that they must plete and perfect, each chapter full and explicit, each suhiect faithfully exhibited, we can on)y express our esiimaie of it in the aggregate. "We consider it an excellent contribution to surgery, as probably the '?et, and books. — pie NaskviUe Journal (^Medicine and Sur^ir^ Prof. Eriehsen's worV, for its size, has not l>eea surpassed; his nine hundred and eight pages, pro- fusely illustraied. are rich in physiological, patholo- gical, and operative suggestions, do'-trines, details, and processes; and wi}/ prove a reliable resource for information, both to physician and suraeon, in the hour of peril —iV. 0. Med. and Surg Journal. M'e are acQuainted with no other work whereia so much good sense, sound principle, and prnctieai inferences, stamp every page. — American Lancet. ELLIS (BENJAMIN), M.D, THE MEDICAL FORMULARY : beicg a Collection of PrescriptioDs, (5emed from Ihe writings and practice of many of the most eminent physicians of America and Europe. Together with the usual Dietetic Preparations and Antidotes for Poisons. To which is added an Appendix, on the Endermic use of Medicines, and on the use of Ether and Chloroform. Ti>8 whole accompanied with a few brief Pharmaceittic and Medical Observations. Tenth edition, revised and much extended by Robert P. Thomas, M. D., Professor of Materia Medica in the Philadelphia College of Pharmacy. h\ one neat octavo volume, extra eloth, of 29o pages. (Lately Issued.) $1 75. After an examination of the new matter and the alterations, we believe the reputation of the work built up by the author, and the late distinguished editor, will continue to flourish under the auspices of the present editor, who has the industry and accu- racy, and, we would say, conscientiousness requi- site for the lesponsjble task. — Am. Jour, of P harm. It wi)l prove partie»>ar)y useful to students and yot»ng prsictitioners, as the most important prescrip- tions employetl in mor. Powiies has losg been before difhcult department of organic chemistry, upon which it is particularly full and satisfactory. We would recommend it to preceptors as a capital " office book" for their students who are beginners in Chemistry. It is copiously illustrated with ex- the pubhe, and its merits have been fufly appreci- ated as the best text-book on chemistry now in existence. AVe do not, of course, piaee it in a rank superior to tlie works of Brande, Graham, Turner, Gregory, or Gmetin, but v/e say that, as a work cellent wood-cuts, and altn. In one large and beautifully printed octavo volume, of about 700 pages, with 393 handsome illustrations, leather. S3 00. The most iinportant subjects in connection with [ practitioner, and was more carefully arranged to practical surge/y which have been more recentlv that single purpose than this. — if. Y. Med. Journal. brought under the notice of, and discussed by, the T|,g .^jdition of many new pages makes this work surgeons of Great Hntnin, are fully and dispassion- „„re than ever indispensable ro the student and prac- ately considered by Mr. Ferg.isson, and that which ! tMonet.—Rartking's Abstract. was before ^vantmg has now been suppiieo, so that i , , . we can now look upon it as a work on practical sur- Among the numerous works upon surgery pub- eerv instead of one on oiierative surgery alone, lished of late years, we know of none we value Medical Times and Gazette. "»">■« highly than the one before us. It is perhaps the very best we have for a text-book and for ordj- No work was ever written which more nearly nary reference, being concise and eminent'.y practi- compreheuded the necessities of the student and 1 cai. — Southern Med. and SMrg. Jo^moi. AND SCIENTIFIC PUBLICATIONS, 15 FLINT (AUSTIN), M. D., Professor of the Theory and Practice of Medicine in the Uaiversity of Louisville, &c. (All Important ]\'cto IVor/c.) PHYSICAL EXPLORATION AND DIAGNOSIS OF DISEASES AFFECT- ING THE RESPIRATORY ORGANS. In oae large and handsome octavo volume, extra cloth, 636 pages. (Now Ready.) $3 00. The author has aimed in the present work to supply a vacanoy in medical literature, viz: "a work limited to diseat^es affecting- the respiratory organs, treating iiiextenso and almost exeltisively of the principles and practice of physical exploration, as applied to the diagnosis of those aflections." The intricacy and importance of the subject demand a fuller and oiore detailed exoosition than has been accorded to it in any volume as yet accessible to the American profession ; while the high re- putation which the author has acqiiirHJ by his researches in kindred topics sulFiciently manifests his ability to render the present work a text-book of great practical utility for the student, and a source to which the praetitioner can at all times refer with certainty. A very condensed summary of the contents is subjoined. CONTENTS. INTRODUCTION. Section I. Preliminary points pertaining to the Ana- tomy and Physioldonf of the Respiratory Appara- tus. Section II. Topographical Divisioas of the Chest. PART I. Physicai, Exploration of the Chest. Chap. I. Definitions— Different Methods of Explora- tions — General Remarks. Chap. IT. Percussion. Chap. III. AiiseultJition. Chap. IV. Inspection. Chap. V. Mensuration. Chap. VI. Palpation. Chap. VII. Succussion. Chap. VIIl. Recapitu- latory Enumeration of the Physical Si^ns fur- nished by the several methods of Exploratioa. Chap. IX. Correlation of Physical Signs. PART 11. Diagnosis of Diseases .\ffecting the Respiua- TORV Organs. Chap. I. Bronchitis, Pulmonary or Bronchial Ca- tarrh. Chap. II. Dilatation and Contraction of the Bronchial Tubes — Pertussis — Asthma. Chap. III. Pneumonitis — Imperfect E.xpansii)n (Atelec- tasis) and Collapse. Chap. IV. Emphysema. Chap. V. Pulmonary Tuberculosis Bronchial Phthisis. Chap. VI. Pulmonary Q3dema— Gan- grene of the Lungs — Pulmonary Apople.'cj' — Can- cer of the liUnss — Cancer in the Mediastinum. Chap. VII. Acute Pleuritis — Clironic Pleuritis — Empyema — Hydrothorax — Pneumothorax — Pneu- mo-Uydrothorax--Pleuralgia-- Diaphragm a tic Her- nia. Chap. VIll. Diseases affecting tiie Trachea and Laryn.x — Poreiirn Bodies in the Air-passages. Appendix. On the Pitch of the Whispering Souffle over Puluioaary Excavations. GRAHAM (THOMAS), F.R.S., Professor of Chemistry in University College, London, &c. THE ELEMENTS OF CHEMISTRY. Including the application of the Science to the Arts. With numerous illustrations. With Notes and Additions, by Robert Bridges, M. D., &c. &c. Second American, from the second and enlarged London edition. PART I. (Lately Issued) large 8vo., 430 pages, 185 ilJustratioas. $1 50. PART II. (Preparing) to match. GRIFFITH (ROBERT E.), M. D., &c. A UNIVERSAL FORMULARY, containing the methods of Preparing and Ad- m' iiefering Officinal and other Medicines. The whole adapted to Physicians and Pharmaceu- j! t«. Second Edition, thoroughly revised, with numerous additions", by Robert P. Thomas, J*. D., Professor of Materia Medica in the Philadelphia College of Pharmacy. In one larg-e and handsome octavo volume, extra cloth, of over 600 pages, double columns, (jicst Issued.) $3 00; DC bound in sheep, $3 25. It was a work requiring much perseverance, and j tioner can possihly have in his possession. — Mtdical when piiblisheublifhi-d in medical journals, and systematic treatises. A work of this kinrl appears to us indispensable to the physi- cian, and ih^reis none we can more cordially recom- ' mend.— JV. Y. Journal of Medicine. BY THE SAME AUTHOR. MEDICAL BOTANY; or, a Description of all the more important Plants used iu Medicine, and of their Properties, Uses, and Modes of Administration. In one lar^e octavo voiume, extra cloth, of 704 pages, handsomely printed, with nearly 350 illustrationsoa wood. $3 00. 16 BLANCHARD & LEA'S MEDICAL. GROSS (SAMUEL D.), M. D., Professor of Surgery in the Jefferson Medical College of Piiiladelphia, fcc. A PRACTICAL TREATISE ON THE DISEASES, INJURIES, AND IMALFOKMATIONS OF THE URINARY BLADDER, THE PROSTATE GLAND, AND THE URETHRA. Second Edition, revised and mnch enlarged, with one hundred and eigrhty- foiir illustrations. In one large and very handsome octavo volume, of over nine hundred pages. {Just Issued.) In leather, raised bands, $5 25; extra cloth, $4 75. The author has availed himselfof the opportunity afforded by a call for a new edition of this work, to thoroughly revise and render it in every respect worthy, so far as in his power, of the very flattering reception whicM has been accorded to it by the profession. The new matter thus added amounts to almost one-third of the original work, while the number of illustrations has been nearly doubled. These additions pervade every portion of the work, which thus has rather the aspect of a new treatise than a new edition. In its present improved form, therefore, it may confidently be presented as a complete and reliable storehouse of information on this important class of diseases, and as in every way fitted to maintain the position which it has acquired in Europe and in this country, as the standard of authority on the subjects treated of. A volume replete with truths and principles of the | provements, it ^vill probably remain one of the most utmost value in the investigation of these diseases. — American Medical Journal. On the appearance of the first edition of this work, the leading English medical review predicted that it would have a " permanent place in the literature of surgery ^vorthy to rank witii the best works of the present a?e." This prediction has been amply ful- filled. Dr. Gross's treatise has been found to sup- ply completely the want which has been felt ever since the elevation of surgery to the rank of a science, of a good practical treatise on the diseases of the bladder and its accessory organs. Philosiphical in its design, methodical in its arrangement, ample and .sound in its practical details, it may in truth be said to leave scr.rcely any'hing to be desired on so im- portant a subject, and with the additions and modi- ficatiuns resulting from future discoveries and im- valuable works on this subject so long as the science of medicine shall exist. — Boston Med. and Surg. Journal. Dr. Gross has brought all his learning, experi- ence, tact, and judgment to the task, and has pro- duced a work worthy of his high reputation. AVe feel perfectly safe in recommending it to our read- ers as a monograph unequalled in interest and practical value by any other on the subject in our language. — Western Journal of Med. and Sicrg. "Whoever ^vill peruse the vast amount of valuable practical information it contains, and wliich we have been unable even to notice, will, we think, agree with us, that there is no work in the English language \vhich can make any just pretensions to be its equal. — N. Y. Journal of Medicine. BY THE SAME AUTHOR. {Just Issued). A PRACTICAL TREATISE ON FOREIGN BODIES IN THE AIR-PAS- SAGES. In one handsome octavo volume, extra cloth, with illustrations, pp. 468. S"2 75. A very elaborate work. It is a complete summary conclude by recommending it to our readers, fully of the whole subject, and will be a useful book of persuaded that its perusal wjll afford them much reference. — British and Foreign Medico-Chirurg. practi'-al information well convej-ed, evidently de- Revietv. rived from considerable experience and deduced from A highly valuable book of reference on a most im- \ ^^ ample collection of facts. — Dutim Quarterly portant subject in the practice of medicine. We i Journal, May, 1855. BY THE SAME AUTHOR. (Preparijig.) A SYSTEM OF SURGERY; Diagnostic, Pathological, Therapeutic, and Opera- live. With very numerous engravings on wood. BY THE SAME AUTHOR. ELEMENTS OF PATHOLOGICAL ANATOMY; illustrated by colored En- graving's, and two hundred and fifty wood-cuts. Second edition, thoroughly revised and greatly enlarged. Jn one very large and handsome imperial octavo volume, leather, raised bands, pp. 82-2. 65 75. GLUGE (GOTTLIEB), M . D., Professor of Physiology and Pathological Anatomy in the University of Brussels, &c. AN ATLAS OF PATHOLOGICAL HISTOLOGY. Translated, with Notes and Additions, by Joseph Leidy, M. D., Professor of Anatomy in the University of Pennsylva- nia. In one volume, very large imperial quarto, extra cloth, with 320 figures, plain and colored, on twelve copperplates. $5 00. GARDNER'S .MEDICAL CHEMISTRY, for the nse of Students and the Profession. In (me royal Vimo. vol., ex. cloth, pp. 306, with illustrations. SI 00. HARRISON'S ESS.AY TOWARDS A CORRECT THEORY OF THE NERVOUS SVSTE.M. la one octavo volume, leather, 292 pages. SI 50. HUGHES' CLINICAL INTRODUCTION TO THE PRACTICE OF AUSCULTATION AxND OTHER .AIODESOF PHYSICAL DIAGNOSIS, IN DISE.ASES OF THE LUNGS AND HEART. Secunt of its leading facts and generally admitted principles, as the student requires during his attendance upon a course of lectures, or for re- ference whilst preparing for examination. — Am. Medical Journal. We need only say, that, without entering into dis- cussions of unsettled questions, it contains all the recent improvements in this department of medical science. For the student beginning this study, and the practitioner who hag but leisure to refresh his memory, this book is invaluable, as it contains all that it is important to know, without special details, which are read with interest only by those who would make a specialty, or desire to possess a criti- cal knowledge of the subject. — Charleston Medical Journal. One of the best treatises that can be put into the hands of the student. — London Medical Gazette. Particularly adapted to those who desire to pos- sess a concise digest of the facts of Human Physi- ology. — British and Foreign Med.-Chirurg. Review. We conscientiously recommend it as an admira- ble " Handbook of Physiology." — London Journal of Medicine. KNAPP'S TECHNOLOGY; or. Chemistry applied to tiie Arts and to Manufactures. Edited, with numerous Notes and Additiims, by Dr. Edmund RoxALDs and Dr. Thomas Richardson. First American edition, w^ith Notes and Additions, by Prof. Walter R. Jonxsox. In two handsome octavo volumes, extra cloth, printed and illus- trated in the highest style of art, with about 500 wood- engravings. SO 00. LALLEMAND ON THE CAUSES, SYMPTOMS, AND TREATMENT OF SPERMATORRHCEA. Translated and edited by Hexry J. McDougal. In one volume, octavo, extra cloth, 320 pages. Second American edition. $X 75. LUDLOW'S MANUAL OF EXAMINATIONS upon Anatomy and Physiology, Surgery, Practice of Medicine, Chemistry, Obstetrics, Materia Me- dica. Pharmacy, and Therapeutics. Designed for Studentsof Medicine throughout the Unittd States. A new edition, revised and improved. In one la'ge royal 12mo. volume, with several hundred illus- trations. (Preparing.) LEE'S CLINICAL MIDWIFERY. In one royal l'2mo. volume, extra cloth, of 23S pages. 75 cents. LISTONS LECTURES ON THE OPERATIONS OF SURGERY. Edited, with numerous Addi- tions and Alterations, by T. D. Mutter, M.D. In one large and hnndsome octavo volume, leather, of 566 pages, with '2J6 wood-cuts. $3 00. HANDBOOKS LARDNER (DIONYSIUS), D. C. L., &c. OF NATURAL PHILOSOPHY AND ASTRONOMY. Revised, with ntiinerous Additions, by the American editor. First Course, containing Mecha- nics, Hydrostatics, Hydraulics, Pneumatics, Sound, and Optics. In one large royal 12mo. volume, of 750 pages, with 424 wood-cuts. SI 75. Second Course, containing Heat, Electricity, Magnetism, and Galvanism, one volume, large royal r2mo., of 450 pages, with 2.50 illustrations. 51 25. Third Course (7iow ready), containing Meteorology and Astronomy, in one lar£re volume, royal 12mo. of nearlj' eight hundred pages, with thirty-seven plates and two hundred wood-cuts. 52 00. The whole complete in three volumes, of about two thousand large pages, with over one thousand figures on steel and wood. $5 00. Any volume sold separate, strongly bound in leather. The various sciences treated in this work will be found brought thoroughly up to the latest period. AND SCIENTIFIC PUBLICATIONS. 19 LEHMANN (C. G.) PHYSIOLOGICAL CHEMISTRY. Translated from the second edition by George E. Day, M. D., F. R. S., &:c., edited by R. E. Rogers, M. D., Professor of Chemistry in the Medical Department of the University of Pennsylvania, with illustrations selected from Funlce's Atlas of Physiological Chemistry, and an Appendix of plates. Complete in two large and handsome octavo volumes, extra cloth, containing 1200 pages, with nearly two hmidred illus- trations. (Noio Ready.) $6 00. This great work, universallv acknowledged as the most complete and authoritative exposition of the principles and details of Zoochemistry, in its passage through the press, has received from Professor Rogers such care as was necessary to present it in a correct and reliable form. To such a work additions were deemed superfluous, but several years having elapsed between the appear- ance in Germany of the first and last volume, the latter contained a supplement, embodying nume- rous corrections and additions resulting from the advance of the science. These have all been incor- porated in the text in their appropriate places, while the subjects have been still furtner elucidated by the insertion of illustrations from the Atlas of Dr. Otto Fun ke. With the view of supplying the student with the means of convenient comparison, a large number of wood-cuts, from works on kindred subjects, have also been added in the form of an Appendix of Plates. The work is, therefore, pre- sented as in every way worthy the attention of all who desire to be familiar with the modern facts and doctrines of Physiological Science. Already well known and appreciated by the scien- tific world, Professor Lehmanii's great work re- quires no laudatory sentences, as, under a ne\vgarb, it is now presented to us. The little space at ouf command would ill suffice to set furlh even a small portjim of its excellences. To all whose studies or professional duties render tlie revelations of Physio- logical Chemistry at once interesting and essential, tliese volumes will be indispensable. Highly com- plimented by European reviewers, sought fur with avidity by sclinlars of every nation, and admirably wrii ten throughout, it is sure to win a welcome and to be thoroughly studied. — Boston Med. and Surg. Journal, Dec. 1855. The most important contribution as yet made to Physiological Chemistry. — Am. Journal Med. Sct- ences, Jan. 1S.56. The present volumes belong to the small class of medical literature which comprises elaborate works of the highest orderof merit. — Montreal Med. Chron- icle, Jan. 1S5G. The ^v()rk of Lehmann stands unrivalled as the most comprehensive boolc of reference and informa- tion extant on every branch of the subject on which it treats. — Edinburgh Monthly Journal of Medical Science. All teachers must possess it, and every intelligent physici;in ouarht todo likewise. — Southern Med. and Surg. Journal, Dec. 1^55. BY THE SAME AUTHOR. {No7o Ready, 1856.) MANUAL OF CHEMICAL PHYSIOLOGY. Translated from the German, with Notes and Additions, by J. Cheston Morris, M. D., with an Introductory Essay on Vital Force, by Samuel Jackson, M. D., Professor of the Institutes of Medicine in the University of Pennsylvania. With illustrations on wood. In one very handsome octavo volume, extra cloth, of 336 pages. $2 25. The original of this work, though but lately issued by its distinguished author, has already assumed the highest position, as presenting in their latest development the modern doctrines and discoveries in the chemistry of life. The numerous additions by the translator, and the Introduc- tion by Professor Jacicson will render its physiological aspect more complete than designed by the author, and will adapt it for use as a text-book of physiology, presenting more thorouglil)^ than has yet been attempted, the modifications arising from the vast impulse which organic chemistry has received within a few years past. From Prof. Jacksoii's Introductory Essay. In adopting the handbook of Dr Lehmann as a manual of Organic Chemistry for the use of the students of the University, and in recommending his original work of Physiological Chemistry for their more mature studies, the high value of his researches, and the great weigtit of his autho- rity in that important department of medical science are fully recognized. The present volume will be a very convenient one for students, as offering a brief epitome of the more elaborate work, and as containing, in a very con- densed form, the positive facts of Physiological Chemistry. — Ain. Journal Med. Sciences, April, 1856. LAWRENCE (W.), F. R. S., &.C. A TREATISE ON DISEASES OP THE EYE. A new edition, edited, with numerous additions, and 2^3 illustrations, by Isaac Hays, M. D., Surgeon to Will's Hospi- tal, &c. In one very large and handsome octavo volume, of 950 pages, strongly bound in leather with raised bands. $5 00. This work is so universally recognized as the standard authority on the subject, that the pub- lishers in presenting this new edition have only to remark that in its preparation the editor has carefully revised every portion, introducing additions and illustrations wherever the advance of science has rendered them necessary or desirable, constituting it a complete and thorough exponent of the most advanced state of the subject. This admirable treatise— the safest guide and most \ octavo pages— has enabled both author and editor to comprehensive work of reference, wliich is within do justice to all the details of this subject, and eon- the reach of the profession. — Stethoscope. j dense iathis single volume the present state of our ! knowledge of the whole science in this department, This standard text-book on the department of whereby its practical value cannot be excelled. We which it treats, has not been superseded, by any or ■ heartily commend it, especially as a book of refer- all of the numerous publications on the subject i ence, indispensable in every medical library. The heretofore issued. Nor with the multiplied improve- ; additions of the American editor very greatly en- ments of Dr. Hays, the American editor, is it at all j hance the value of the work, exhibiting the learning likely that this great work will cease to merit the and experience of Dr. Hays, in the light in which he confidence and preference of students or practition- j ought to be held, as a standard authority on all sub- erg. Its ample extent — nearly one thousand large | jects appertaining to this specialty .— iV. y'. illerf. Gaz. 20 BLANCHARD & LEA'S MEDICAL LA ROCHE (R.), M. D., &.c. YELLOW FP^VER, considered in its Historical, Pathological, Etiological, and Therapeutical Relations. Including a Sketch of the Disease as it has'occurred in Philadelphia from Itiyyto 1854, with an examination of the connecIic)ri> between it and the fevers known undtr tlie same name in other parts of temperate as well as in tropical regions In two large and handsome octavo volumes of nearly 1500 pages, extra (;loth. (IVoiv Ready.) $7 00. The publishers are happy in being able at length to present to the prolession this great work, which they are assured will be regarded as an honor to the medical literature of the coiuitry. As tlie result of many years of personal observation and study, as embodying an iniellisent rcs'/ime of all that has been written regarding the disease, and as exhausting tlie subject in all its various aspects, these volumes must at once take the position of the standard authority and work of refer- ence on the many important questions brought into consideration. From Profesfor S. H. Dickson, Charlestcn, S. C, September 18, 1855. A monument of intellisrent and well applied re- search, iiUnost without example. It is, indeed, in itself, a large iilirary, and is de.stined to constitute tjie special resm-t as a book of reference, in the subject of which it treats, to all future time. We have not time at present, en<:aged as we are, by day and by nisht, in the work of coml)ating this very disease, now prevailm? in oui citv, to do more than give this cursory notice of what'we consider as undoubtedly the most able and erudite medical publicali(m our country has yet produced But in view of the startlin.- fact, that this, the most malig- nant and unmanageable disease of modern times, has for several years been prevailing in our country to a greater extent than ever before; tliat it is no longer confined to either large or small cities, but penetrates country villages, plantations, and farm- houses; that it is treated with scarcely better suc- cess now than thirty or forty years ago; that there is vast mischief done by ignorant pretenders to know- ledge in regard to the disease, and in view of the pro- bability that a majority of southern physicians will be called upon to treat the disease, we trust that this able and comprehensive treafise will We very gene- rally read in the south.— Memphis Med, Recorder. This is decidedly the great Americ.in medical work of theday — a full, complete, and systematic treatise, unequalled by any other upon the all-important sub- erection of this towering monument to liis own fame, and to the glory of the medical literature of liis own country. It is destined to remain the great autho- rity upon the subject of Yellow Fever The student and physician will find in these volumes a r^sumi ,of the sum total of the knowledge of the world upon 'the awful scourge which tliey so elaborately discuss. The style is so soft and so pure as to refresh and in- vigorate the mind while absorbing the Miouglits of the gil"ted author, while the publishers have suc- ceeded in bringing theextern.-ils into a most felicitous harmony with the inspiration that dwells within. Take it all in all, it is a bonk we nave often dreamed of, but dreamed not that it would ever meet our waking eye as a tangible reality. — Aashville Journal of Medicine. We deem it fortunate that the splendid work of Dr. La Roche should have been issued from the press at this particular time. The ^vant of a reliable di- gest of all that is known in relation t . this frightful malady has long been felt — a want very satisfactorily met in the work before us. We def-m it but faint praise to say that Dr. La Rtche has succeeded in presenting the profession with an able and complete monograph, one which will find its way into every well ordered library. — Va. Stethoscope. Although we have no doubt that controversial treatises on the mode of origin and propagation of the fever in question ■will, as heretofore, occasionally appear, yet it must be some time befr>re another sys- jeetof \ ellow Fever. The laborious, indefatigable, i tematic work can arise in the face of so admirable and learned author has devoted to it many years of and carefully executed a one as the present. It is a arduous research and careful study, and the result] mine of information, quite an encyclopa?dia of refer is such as will reflect the highest' honor upon the author and our country.— Sou/Aern Med. and Surg. Journal. The genius and scholarship of thisgreat physician could not have been belter employed than in the ences, and r£'., including an Inquiry into the Existence an(rMorbid Agency of Malaria. la one handsome octavo volume, extra cloth, of 500 pages. $.3 00. A more simple, clear, and forcible exposition of I This work should be carefully studied by Southern the groundless nature and dangerous tendency of | physicians, embodying as it does the reflections of certain patliological and etiological heresies, has | an original thinker and close observer on a subject seldom been presented to our notice.— A'. Y. Journal peculiarly their uwn.— Virginia Med. and Surgical of Medicine and Collateral Science. I Journal. MULLER (PROFESSOR J.), M. D. PRINCIPLES OF PHYSICS AND METEOROLOGY. Edited, with Addi- lions, by R. Eklesfeld Griffith, M. D. In one large and handsome octavo volume, extra cloth, with 550 wood-cuts, and two colored plates, pp. 636. $3 50. The Physics of MQUer is a work superb, complete, I tion to the scientific records of this country may be unique : thegreatest want known to English Science | duly estimated by the fact that the cost of I'lie ori^i- eould not have been better supplied. The work is I nal drawings and engravings alone has exceeded the ol surpassing interest. The value of this contribu- | sum of £'2,000.— Lancet. MAYNE'S DISPEXSATORY AND THERA- ! PEUTICAL RE.ME.MHRaNCKR. Comprising ' the entire lists of .Materia Medica. with every I Practical Formula contained in the three "feritish Pharmacopoeias. With relative Tables subjoined, ! illustrating, by upwards of six hundred and sixty examples, the Extemporaneous Forms and Com- binations suitable for the diiTerent Medicines. Edited, with the addition of the Formula of the United States Pharmacopoeia, by R. Eglesfeld ' Griffith, AI. D. In one 12mo volume, extra cloth, of 300 large pages. 75 cents. MATTEUCCrS LECTURES ON THE PHYSI- CAL PHEXOVIENA OF LIVING BEINGS. Edited by J. Pereira, M. D. In one neat royal I'imo. volume, extra cloth, with cuts, .3dS pages. $1 00. MALGAIGNE'S OPERATIVE SURGERY, based on Normal and Pathological Anatomy. Trans- lated from the French by Frederick Brittan, A. B., M. D. Withnumerousillustrationstmwood. In one handsome octavo Volume, extra cloth, of nearly six hundred pages. $2 25. 4 AND SCIENTIFIC PUBLICATIONS. 21 MEIGS (CHARLES D.), M. D., Professor of Obstetrics, &c. in tlie Jefferson Medical College, Philadelphia. OBSTETRICS: THE SCIENCE AND THE ART. Second edition, revised and improved. With one hundred and thirty-one illustrations. In one beautifully printed octavo volume, leather, of seven hundred and liity-two large pages. $3 75. The rapid demand for a second etiition of thi.s work is a sufficient evidence that it has supplied a desideratum of the profession, notwithstanding the numerous treatises on the same subject which have appeared within the last few years. Adopting a system of his own, the author has combined the leading principles of his interesting and dilficult subject, with a thorough exposition of its rules o/' practice, presenting the results of long and extensive experience and of familiar acquaintance with all the modern writers on this department of medicine. As an American Treatise on Mid- wifery, which has at once assumed the position of a classic, it possesses peculiar claims to the at- tention and study of the practitioner and student, while the numerous alterations and revisions which it has undergone in the present edition are shown by the great enlargement ol the work, which is not only increased as to the size of the page, but also in the number. BY THE SAME AUTHOR. (^Lately Issued.) WOMAN : HER DISEASES AND THEIR REMEDIES. A Series of Lee- tures to his Class. Third and Improved edition. In oue large and beautifully printed octavo volume, leather. pp. 672. $3 GO. The gratifying appreciation of liis labors, as evinced by the exhaustion of two large impressions of this work within a few years, has not been lost upon the author, who has endeavored in every way to render it worthy of the favor with which it has been received. The opportunity thus aflbrded for a second revision has been improved, and the work is now presented as in every way superior to its predecessors, additions and alterations having been made whenever the advance of science has rendered them desirable. The typographical execution of the work will also be found to have undergone a similar improvement, and the work is now confidently presented as in every way worthy the position it has acquired as the standard American text-book on the Diseases of Females. It contains a vast amount of practical knowledge, by one who has accurately ol)served and retained the experience of many years, and who tells tiie re- sult in a free, familiar, and pleasant manner. — Dub- lin Quarterly Journal. There is an off-liand fervor, aglow, and a warm- heartedness infecting the effort of Dr. Meigs, which is entirely captivating, and which absolutely hur- ries the re.iuler through from beginning to end. Be- sides, the book teems with solid instruction, and it shows the very highest evidence of ability, viz., the clearness with which the information is pre- sented. VVe know of no lietter test of one's under- standing a sulijcct than the evidence of the power of lucidly explaining it. The most elementary, as well as tlie obscurcKt subjects, under the jiencil of Prof. Meigs, are isolated and made to stand out in BY THE SAME AUTHOR. (Lately Puhlished.) ON THE NATURE, SIGNS, AND TREATxMENT OF CHILDBED FEVER. In a Series of Letr?rs addressed to the Students of his Cliis. In one handsome octavo volume, extra cloth, ol 365 pages. $2 50. such bold relief, as to produce distinct impressions upim the mind and memory of the reader. — Th« Charleston Med. Journal. Professor Meigs has enlarged and amended this great work, for such it unquesti(mably is, having passed the ordeal of criticism at home and abroad, but been improved thereby ; for in tliis new edition tlie author has introduced real improvements, and increased the value and utility of the book im- measuralily. It presents so many novel, bright, and sparkling thoughts; such an exuberance of new ideas on almost every page, that we confess our- selves to have become enamored witli tlie book and its author ; and cannot withhold our congratu- lations from our Philadelphia confreres, that such a teacher is in their service. — N. Y. Med. Gazette. The instruct ive and interestin"; author of this work, whose previous labors in the department of medicine which he so sedulously cultivates, have placed his countrymen under deep and aliiding obli- gations, ;ig:iin challenges their admiration in the fresh and vigorous, attractive and racy pages before us. It is a delectable book. * * * Tliis treatise upon child-lied fevers will have an extensive sale, being destined, as it deserves, to find a place in the library of every practitioner who scorns to lag in the rear of his hret^iren. — Nashville Journal of Medi- cine and Surgery. This book will add more to his fame than either of those which bear his name. Indeed we doubt whether any material improvement will be made on the teachings of this volume for a century to come, since it is so eminently practical, and based on pro- found knowledge of the science and consummate skill in the ar« of healing, and ratified by an ample and extensive experience, such as few men have the industry or good fortune to acquire. — N. Y. Med. Gazette. BY THE SAME AUTHOR ; WITH" COLORED PLATES. (Lately Puhlished.) A TREATISE ON ACUTE AND CHRONIC DISEASES OF THE NECK OF THE UTEllUS. With numerous plates, drawn and colored from nature in the highest style of art. In one handsome octavo volume, extra cloth. f4 50. The object of the author in this work has been to present in a small compass the practical results of his long experience in this important and distressing class of diseases. The great changes intro- duced iiiio practice, and the accessions to our knowledge on the subject, within the last few years, resulting from the use of the metroscope, brings within the ordinary practice of every physician numerous cases which were formerly regarded as incurable, and renders of great value a work like the pre.*ent combining practical directions for diagnosis and treatment with an ample series of illus- trations, copied accurately from colored drawings made by the author, after nature. BY THE SAME AUTHOR. OBSERVATIONS ON CERTAIN OF THE DISEASES OF YOUNG CHILDREN. In one handsome octavo volume, extra cloth, of 214 pages. $175 22 BLANCHARD & LEA'S MEDICAL MACLISE (JOSEPH), SURGEON, SURGICAL ANx\TOMY. Forming one volume, very large imperial quarto. With s^ixty-eig-ht large and splendid Plates, drawn in the hest style and beamifully colored. Con- taining one hundred and ninety Figures, many of them the size of life. Together with copious and explanatory letter-press. Strongly and handsomely bound in extra cloth, being one of the cheapest and best executed Surgical works as yet issued in this country. $11 00. *^* The size of this work prevents its transmission through the post-otlice as a whole, but those who desire to have copies forwarded by mail, can receive them in five parts, done up m stout wrappers. Price $9 00. One of the greatest artistic triumplis of the age in Surgical Anatomy. — British American Medical Journal. Too much cannot be said in its praise; indeed, we have not language to do it justice. — Ohio Medi- cal and Surgical Journal. The most admirable surgical atlas we have seen. To the practitioner deprived of demonstrative dis- sections upon the human subject, it is an invaluable companion. — N. J. Medical Reporter. The most accurately engraved and beautifully colored plates we have ever seen in an American book — one of the best and cheapest surgical works ever published. — Buffalo Medical Journal. It is very rare that so elegantly printed, so well illustrated, and so useful a work, is offered at so moderate a price. — Charleston Medical Journal. Its plates can boast a superiority which places them almost beyond the reach of competition. — Medi- cal Examiner. Every practitioner, we think, should have a -work of this kind within reach. — Southern Medical and Surgical Journal. No such lithographic illustrations of surgical re- gions have hitherto, we think, been given. — Boston Medical and Surgical Journal. As a surgical anatomist, Mr. Maclise has proba- bly no superior. — British and Foreign Medico-Chi- rurgical Review. Of great value to the student engaged in dissect- ing, and to the surgeon at a distance from the means of keeping up his anatomical knowledge. — Medical Times. The mechanical execution cannot be excelled. — Transylvania Medical Journal. A work which has no parallel in point of accu- racy and cheapness in the English language. — N. Y. Journal of Medicine. To all engaged in the study or practice of their profession, such a work is almost indispensable. — Dublin Quarterly Medical Journal. No practitioner whose means will admit should fail to possess it. — Banking's Abstract. Country practitioners will find these plates of im- mense value. — N. Y. Medical Gazette. We are extremely gratified to announce to the profession the completion of this truly magnificent work, which, as a whole, certainly stands unri- valled, both for accuracy of drawinaf, heauty of coloring, and all the requisite explanations of the subject in hand. — The New Orleans Medical and Surgical Journal. This is by far the ablest work on Surgical Ana- tomy that has come under our observation. We know of no other work that would justify a stu- dent, in any degree, for neglect of actual dissec- tion. Ju those sudden emergencies that so often arise, and which require the instantaneous command of minute anatomical knowledge, a work of this kind keeps the dettiils of the dissecting-room perpetually fresh in the memory. — The Western Journal of Medi- cine and Surgery. The very low price at which this work is furnished, and the beauty of its execution, requii-e an extended sale to compensate the publishers for the heavy expenses incurred. MOHR (FRANCIS) PH. D., AND REDWOOD (TH EOPH I LUS). PRACTICAL PHARMACY. Comprising the Arrangements, Apparatus, and Manipulations of the Pharmaceutical Shop and Laboratory. Edited, with extensive Additions, by Prof. William Procter, ot the Philadelphia College of Pharmacy. In one handsomely printed octavo volume, extra cloth, of 570 pages, with over 500 engravings on wood. $2 75. MACKENZIE (W.), M.D., Surgeon Oculist in Scotland in ordinary to Her Majesty, &c. &c. A PRACTICAL TREATISE ON DISEASES AND INJURIES OF THE EYE. To which is prefixed an Anatomical Introduction explanatory of a Horizontal Section ol the Human Eyeball, by Thomas Wharton Jones, F. R. S. From the Fourth Revised and En- larged London Edition. With Notes and Additions by Addinell Hewson, M. D., Surgeon to Wills Hospital, &:c. ice. Inone very large and handsome octavo volume, leather, raised bands, with plates and numerous wood-cuts. (_I\'ow Ready.) $5 25. The treatise of Dr. Mackenzie indisputably holds i accordance with the advances in the science which the first place, and forms, in respect of learning and have been made of late years. Nothing worthy of repetition upon any branch of the subject appears to have escaped the author's notice. We consider it the duty of every one who has the love of his profes- sion and the welfare of his patient at heart, to make himself familiar with this the most complete work in the En2;lish language upon the diseases of the eye. — Med. Times and Gazette. The fourth edition of this standard work will no doubt be as fully appreciated as the three former edi- researcli, an FIncyclopoEdia unequalled in extent by any other work of the kind, either English or foreign. — Dixon on Diseases of the Eye. Few modern books on any department of medicine or surgery have met with such extended circulation, or have procured for their authors a like amount of European celebrity. The immense research which it displayed, the thorough acquaintance with the subject, practically as well as theoretically, and the able manner in which the author's stores of learning '>""s. It is unnecessary to say aword in its praise, and experience were rendered available for general; f'"" tlie verdict has already been passed upon it by use, at once procured for the first edition, as well on ' "'^ most competent judges, and " Mackenzie on the the continent as in this country, that high positicm as a standard work which each successive edition has more firmly established, in spite of the attrac- tions of several rivals of no mean ability. This, the fourth edition, has been in a great measure re-writ- ten ; new matter, to tlie extent of one hundred and fifty pages, has been added, and in several instances formerly expressed opinions have been modified in the most competent judges, and ' Eye" has justly obtained a reputation which it is no figure of speech to call world-wide. — British and Foreign Medico-Chirurgical Review. This new edition of Dr. Mackenzie's celebrated treatise on diseases of the eye, is truly a miracle of industry and learning. We need scarcely say that he has entirely exhausted the subject of his specialty. — Dublin Quarterly Journal. AND SCIENTIFIC PUBLICATIONS. 23 MILLER (JAMES), F. R. S. E., Professor of Surgery in the University of Edinburgh, &c. PRINCIPLES OF SURGERY. Fourth American, from the third and revised Edinburgh edition. In one large and very beautiful volume, leather, of 700 pages, with two hundred and forty exquisite illustrations on wood. (Noiv Ready, 1856.) $3 75. The extended reputation enjoyed by this work will be fully maintained by the present edition. Thoroughljf revised by the author, it will be found a clear aiad compendious exposition of surgical science in its most advanced condition. In connection with the recently issued third edition of the author's " Practice of Surgery," it forms a very complete system of Surgery in all its branches. The work of Mr. Miller is ton well and too favor- ably known anions: us, as one of our best text-books, to render any further notice of it necessary than the announcement of a new edition, the fovrth in our country, a proof of its extensive circulation amon: us. As a concise and reliable exposition of the sci- ence of modern surgery, it stands deservedly high — we know not its superior. — Boston Med. and Surg. Journal, May, 1856. The works of Professor Miller are so well known to the profession, that it is unnecessary for us say anything in relation to their general merits. The present edition of his "Principles," however, de- serves a s)iecial notice, from the number, variety, and faithfulness of its illustrations. The \vood-cuts are beautifully executed, and many of them are new and exceedingly iristructive, particularly those illus- trating mortifieation, e l^-inJ with which we are acquainted.— Med. ,^„„t „ ,.«,., „..„ ««„ ,= «„<. ,„ ,„..> >,„ .,, J^xatniner, April, 1850. it is almost a sine qua non. The one before us in most of the divisions, tlie most unexceptionable of all books of the kind that we know of. The newest and soundest doctrines and the latest im- provements and discoveries are explicitly, tbouo^h concisely, laid before the student. Of course it is useless for us to recommend it to all last course students, but there is a class to whom we very sincerely commend this cheap book as worth its weight in silver — that class is the graduates in medicine of more than ten years' standing, who have not studied medicine since. They will perhaps find out from it that the science is not exactly now j Having made free use of this volume in our ex- aminatidns of pupils, we can speak from experi- ence in recommending it as an admirable compend i for students, and as especially useful to preceptors ' who examine their pupils. It will save the teacher j much labor by enabling him readily to recall all of the points upon which his pupils should be ex- amined. A work of tills sort should be in the hands of every one who takes pupils into his office witli a view of examining them; and this is unquestionably the best of its class. — Transylvania Med. Journal. NELIGAN (J. MOpRE), M. D., M. R. I. A., &.c. (A sjjiendid icork. Notv Ready.) ATLAS OF CUTANEOUS DISEASES. In one beautiful quarto volume, extra cloth, with splendid colored plates, presenting nearly one hundred elaborate representations of disease. $4 50. This beautiful volume is intended as a complete and accurate representation of all the varieties of Diseases of the Skin. While it can be consulted in conjunction with any work on Practice, it has especial reference to the author's " Treatise on Diseases of the Skin," so favorably received by the profession some years since. The publishers feel justified in saying that no more beautifully exe- cuted plates have ever been presented to the profession of this country. The diagnosis of eruptive disease, however, under ; placed within its reach and at a moderate cost a most all circumstances, is very difficult. Nevertheless I accurate and well delineated series of plates illus- Dr. Neligan has certainly, "as far as possible," j trating tlie eruptive disorders. These plates are all given a faithful and accurate representation of this drawn from the life, and in many of them the daguer- class of diseases, and there can be no doubt that reotype has been employed ^vith great success. Such these plates will be of great use to the student and practitiimer in drawing a diagnosis as to the class, order, and species to which the particular case may belong. While looking over the " Atlas" we have been induced to examine also the " Practical Trea- tise." This was published in 1852, and we are in- clined to consider it a very superior work, combin- ing accurate verbal description, with sound views of the pathcdogy and treatment of eruptive diseases. — Glasgow Medical Journal. The profession owes its thanks to the publishers of Neligan's Atlas of Cutaneous Diseases, for they have BY THE SAME AUTHOR. A PRACTICAL TREATISE ON DISEASES OP THE SKIN. neat royal 12mo. volume, extra cloth, of 334 pages. $1 00. works as these are especially useful to country prac- titioners, who have not an opportunity of seeing the rarer forms of cutaneous disease, and hence need the aid of illustrations to give them the requisite infor- mation on the subject. With tliese plates at hand, the inexperienced practitioner is enabled to discri- minate with much accuracy, and he is thus, com- paratively speaking, put on an equal footing with those who have had the opportunity of visiting the large hospitals of Europe and America. — Va. Med. Journal, June, 1856. In one We must say he bears off the palm for clearness, conciseness, and rigid plainness of expression. This style enables him to compress much in a single sen- tence, without in any degree injuring the sense, but, on the contrary, making it more comprehensive and impressive. By far the largest proportion of the volume is devoted to therapeutic considerations. Not merely are I'ull details of treatment and formulae given at the close of each section, but an entire chapter is devoted to " those general points in thera- peutics which are specially applicable to this class of affections." The present work forms a favorable contrast to the voluminous and disputed details of many of its predecessors, and will, ^ve feel assured, be admirably conducive to facilitating the study of the student, and improving the practice of the prac- titioner. — Dublin Quarterly Journ. of Med. Science. S!^ The two volumes will be sent by mail on receipt of Five Dollars. OWEN ON THE DIFFERENT FORMS OF THE SKELETON, AND OF THE TEETH. One vol. royal 12mo., extra cloth, with numerous illustrations. (Just Issued.) $1 25. AND SCIENTIFIC PUBLICATIONS. 25 {Now Comjdete.) PEREIRA (JONATHAN), M . D., F. R. S., AND L. S. THE ELEMENTS OF MxVTERIA MEDIGA AND THEllAPEUTICS. Third American edition, enlarged and improved by the author; including Notices of most of the Medicinal Substanceis in use in the civilized world, and forming an Encyclopaedia of Materia Medica. Edited, with Additions, by Joseph Carson, M. D., Professor of Materia Medica and Pharmacy in the University of Pennsylvania. In two very large octavo volumes of 2100 pages, on small type, with about 500 illustrations on stone and wood, strongly bound in leather, with raised bands. $9 00. Gentltjmen who have the first volume are recommended to complete their copies without delay. The first volume will no longer be sold separate. Price of Vol. 11. $5 00. Wlien we rememlier that Philology, Natural His- tory, Botany, Chemistry, Physics, and the Micro- scope, are all brought forward to elucidate the sub- ject, one cannot fail to see that the reader has here a work wortliy of the name of an eneyclopsedia of Materia JFcdica. Our ow^n opinion of its merits is that of its editors, and also that of the whole profes- sion, both of this and foreign countries— namely, " tliat in copiousness of details, in extent, variety, and accuracy of information, and in lucid explana- tion of difficult and recondite subjects, it surpasses all other works on Materia Medica hitherto pub- lished." VVe cannot close this notice without allud- ing to the special additions of tlie American editor, which pertain to the prominent vegetable produc- tions of this country, and to the directions of the United States Pliarmacopoeia, in connection with all the articles contained in the volume which are re- ferred toby it. The illustrations have been increased, and this edition by Dr. Carson cannot well be re- garded in any other light than that of a treasure which should be found in the library of every physi- cian. — Neiv York Journal of Medical and Collateral Science. The third edition of his "Elements of Materia Medica, although completed under the supervision of others, is by far the most elaborate treatise in the English language, and will, while medical literature is cherished, continue a monument alike honorable to his genius, as to his learning and industry. — American Journal of Phartnucy. The work, in its present shape, forms the most comprehensive and C(nnplete treatise on materia medica extant in the English language. — Dr. Pereira has been at great pains to introduce into his work, not only all the information on the natural, chemical, and commercial history of njedi- cines, 'vvhich might be serviceable to the physician and surgeon, but whatever might enable his read- ers to understand thoroughly the mode of prepar- ing and manufacturing various articles employed either for preparing medicines, or for certain pur- poses in the arts connected with materia medica and the practice of medicine. The accounts of the physiological and therapeutic effects of remedies are given with great clearness and accuracy, and in a manner calculated to interest as well as instruct the reader. — Edinburgh Medical and Surgical Journal. PEASELEE (E. R.), M . D., Professor of Anatomy and Physiology in Dartmouth College, &c. HUMAN HISTOLOGY, in its application,g to Physiology and G-eneral Pathology; designed as a Text-Book for Medical Students. With numerous illustrations. In one handsome royal r2nio. volume. (Prepariiig.) The sul>jeet of this work is one, the growing importance of which, as the basis of Anatomy and Physiology, demands for it a separate volume. The book will thereibre supply an acknowledged deficiency in medical text-books, while the naine of the author, and his experience as a teacher lor the last thirteen years, is a guarantee that it will be thoroughly adapted to the use of the student. PIRRIE (WILLIAM), F. R. S. E., Professor of Surgery in the University of Aberdeen. THE PPJNCIPLES AND PRACTICE OP SURGERY. Edited by John Neill, M. D., Professor of Surgery in the Penna. Medical College, Surgeon to the Pennsylvania Hospital, ifcc. In one very handsome octavo volume, leather, oi'7S0 pages, with 316 illustrations. $3 75. We know of no other surgical work of a reason- able size, wherein there is so much theory and prac- tice, or where subjects are more soundly or clearly taught. — The Stethoscope. There is scarcely a disease of the bones or soft parts, fracture, or dislocation, that is not illustrated by accurate wood-engravings. Then, again, every instrument employed by the surgeon is thus repre- sented. These engravings are not only correct, but really beautiful, showing the astor of four translators has at length overcome the almost insuperable ditliculties which have so long prevented the appearance of the work in an English dress, while the additions made from various papers and essays of the author present his views on all the topics embraced, in their latest published form. To a work so widely known, eulogy is unnecessary, and the publishers would merely state that it is said to contain the results of not less than thirty thousand i)ost-mortem examioations made by the author, diligently compared, generalized, and wrought into one com- plete and harmonious system. The profession is too well acquainted with the re- pu^tion of Rokitansky's work to need our assur- ance that this is one of the most profound, thorough, and valiKilde books ever*issued from the medical press. It is sui generis, and has no standard of c(un- jiarison. It is only necessary to announce that it is issued in a form as cheap as is compatible with its size and preservation, and its sale follows as a matter of course. No library can be called com- plete without it. — Buffalo Med. Journal. An attempt to give our readers any adequate idea of the vast amount of instruction accumulated in these volumes, would be feeble and hopeless. The effort of the distinguished author to concentrate in a small space his great fund of knowledge, has so charged his text with valuable truths, that any attempt of a reviewer to epitomize is at once para- lyzed, and must end in a failure. — Weitfn Lancet. As this is the highest source of knowledge upon the important subject of which it treats, ^no real student can alford to be without it. The American liublishers have entitled themselves to tlie thanks of the profession of their country, for tliis timeous and beautiful edition. — Nashville Journal of Medicine. As a book of reference, therefore, this work must prove of inestimable value, and we cannot too highly recommend it to the profession.— CAar/eiion Med. Journal and Review, Jan. 1856. This book is a necessity to every practitioner. — Am. Med. Monthly. 30 BLANCHARD & LEA'S MEDICAL TAYLOR (ALFRED S.), M. D., F. R. S., Lecturer on Medical Jurisprutlence and Chemistry in Guy's Hospital. MEDICAID JURISPRUDENCE. Fourth American, from the fifth improved and enlarged English Edition. Willi Notes and References to American Decisions, by Edward Hartshorne, M. D. In one large octavo volume, leather, of over seven hundred pages. (Just Ready, June, 1S56.) $3 00. Thi-; standard work has lately received a very thorough revision at the hands of the author, who has introduced whatever was necessary to render it complete and satisfactory in carrying out the objects in view. Tne editor has likewise used every exertion to make it equally thorough with regard to all matters relating to the practice of this country. In doing this, he has carefully ex- amined all that has appeared on the subject since the publication of the last edition, and has incorpo- rated all the new information thus presented. The work has thus been considerably increased ui size, notwithstanding which, it has been kept at its former very moderate price, and in every resp)ect it w'\.\\ be found worthy of a continuance of the remarkable favor which has carried it through so many editions on both sides of the Atlantic. A few notices of the former editions are appended. We know of no work on Medical Jurisprudence which contains in tiic same space anything like the same amount of valuable matter. — lY. Y. Journal of Medicine. No work upon the subject can be put into the hands of students either of law or medicine which will engage them more closely or profitably ; and none could be offered to the busy jiractitioner of either calling, for the purpose of casual or hasty reference, that would be more likely to afford the aid desired. We therefore recommend it as the best and safest manual for daily a.se.-^American Journal oj Medical Sciences. So well is this work known to the members both of the medical and legal professions, and so highly is it appreciated by them, that it cannot be necessary for us to say a word in its commendation j its having already reached a fourth edition being the best pos- s'ble testimony in its favor. -The autlior has ob- viously subjected the entire work to a very careful revision. — Brit, and Foreign Med. Chirurg. Review. This work of Dr. Taylor's is generally acknow- ledged to lie one of the ablest extant on the subject of medical jurisprudence. It is certainly one of the most attractive books that, we have met with; sup- plying so much both to interest and instruct, that we do not hesitate to affirm that after having once commenced its perusal, few could be prevailed upoa to desist before completing it. In the last London edition, all the newly observed and accurately re- corded facts have been inserted, including much that is recent of Chemical, Microscopical, and Patholo- gical research, besides papers on numerous subjects never before published .-CAorZe«2o« Medical Journal and Review. It is not excess of praise to say that the volume before us is the very best treatise extant on Medical Jurisprudence. In saying this, we do not wish to be understood as detracting from the merits of the excellent works of Beck, Ryan, Traill, Guy, and others; but in interest and value we think it must be conceded that Taylor is superior to anything that has preceded it. Tlie author is already well known to the profession by his valuable treatise on Poisons ; and the present volume will add materially to his high reputation for accurate and extensive know- ledge and discriminating judgment. — N. W. Medical and Surgical Journal. BY THE SAME AUTHOR. ON POISONS, IN RELATION TO MEDICAL JURISPRUDENCE AND MEDICINE. Edited, with Notes and Additions, by R. E. Griffith, M. D. In one large octavo volume, leather, of 6S8 pages. $3 00 TODD (R. B.), M. D., AND BOWMAN (WILLIAM), F. R. S. PHYSIOLOGICAL ANATOMY AND PHYSIOLOGY OF MAN. With numerous handsome wood-cuts. Parts I, II, and III, in one octavo volume, 552 pages. $2 50. Part IV will complete the work. The first portion of Part IV, with numerous original illustrations, was published in the Medical News and Library for 1853, and the completion will be issued immediately on its appearance in London. Those who have subscribed since the appearance of the preceding portion of the work can have the three parts by mail, on remittance of $2 50 to the publishers. WATSON (THOMAS), M. D., Sec. LECTURES ON THE PRINCIPLES AND PRACTICE OF PPIYSIC. Third American edition, revised, with Addit "Treatise on the Diseases of Children," tzc. large pages, strongly bound with raised bands. To say that it is the very best work on tlie sub- ject now extant, is but to echo the sentiment of the medical press throughout the country. — iV. O. Medical Journal. Of the text-books recently republished Watson is very justly the principal favorite. — Holmes^s Rep. to Nat. Med. Assoc. By universal consent the work ranks among the very best text-books in our language. — Illinois and Indiana M^d. Journal. Resrarded on all hands as one of the very best, if not the very best, systematic treatise on practical medicine extant. — St. Louis Med. Journal. ions, by D. Francis Condie, M.D., author of a In one octavo volume, of nearly eleven hundred §3 25. Confessedly one of the very best works on the principles and practice of physic in the Knglish or any other language. — Med. Examiner. Asa text-book it has no equal; as a compendium of pathology and practice no superior. — New York Annalist. We know of no work better calculated for being placed in the hands of the student, and for a text- book ; on every important point the author seems to have posted up his knowledge to the day. — Amer. Med. Journal. One of the most practically useful books that ever was presented to the student. — N. Y. Med. Journal. V/HAT TO OBSERVE AT THE BEDSIDE AND AFTER DEATH, IN MEDICAL CASES. Published under the authority of the London Society for Medical Observation. A new American, from the second and revised London edition. In one very handsome volume, royal 12mo., extra cloth. {Just Issued.) $1 00. To the observer who prefers accuracy to blunders and precision to carelessness, this little book is in- valuable. — N. H. Journal of Medicine . One of the finest aids tea young practitioner we have ever seen. — Peninsular Journal of Medicint. It offers to the student all the assistance that can be expected from such a work. — Medical Examiner. The most complete and convenient manual for the student we possess. — American Journal of Medical Science. In every respect, this work as an anatomical o;uide for the student and practitioner, merits our warmest and most decided praise. — London Medical Gazette. AND SCIENTIFIC PUBLICATIONS. 31 WILSON (ERASMUS), M.D., F. R. S., Lecturer on Anatomy, London. A SYSTEM OF HUMAN ANATOMY, General and Special. Fourth Ameri- can, from the last English edition. Edited by Paul B. Goddard, A. JM., M. D. Wilh two hun- dred and filly illustrations. Beautifully printed, in one large octavo volume, leather, of nearly six hundred pages. $3 00. In many, if not all the Colleges of the Union, it has become a standard text-book. This, of itself, is sufficiently expressive of its value. A work very desirable to the student; one, the possession of which will greatly facilitate his progress in the Btudy of Practical Anatomy. — New York Journal of Medicine. Its author ranks with the highest on Anatomy. — Southern Medical and Surgical Journal. BY THE SAME AUTHOR. (Now Ready.) THE DISSECTOR'S MANUAL; or. Practical and Surgical Anatomy. Third American, from the last revised and enlarged Englii-h edition. Modified and rearranged, by "William Hunt, M. D., Demonstrator of Anatomy in the University of Pcnn>ylvania. In one large and handsome royal 12mo. volume, leather, of 5S2 pages, with 154 illustrations. $2 00. The modifications and additions which this work has received in passing recently through the author's hands, is sufficiently indicated by the fact that it is enlarged by more than one hundred pages, notwithstanding that it is printed m smaller type, and with a greatly enlarged page. So com- plete has the author rendered it, that the editor has found but little to do, except in rearranging it to suit the mode of dissection practised in this country, and in introducing a large number of additional illustrations. Of these, many new ones have been engraved expressly tor the work, and the series throughout will be found greatly enhanced in value. The typographical execulicsu of the volume has undergone a like improvement, and in everyrespect the work is presented as merit- ing an increase of the favor which it has hitherto enjoyed as a sound practical guide to the study oi anatomy. It remains only to add, that after a careful exami- I ing very superior claims, well calculated to facilitate nation, we have no hesitation in recommending this") their studies, and render their labor less irksome, by work to the notice of those for whom it has been I constantly keeping before them definite objects of expressly written — the students — as a guide possess- | interest. — The Lancet. BY THE SAME AUTHOR. ON DISEASES OF THE SKIN. Third American, from the third London edition. In one neat octavo volume, of about five hundred pages, extra cloth. $1 75. The " Diseases of the Skin," by Mr. Erasmus I in that department of medical literature. — Medico- Wilson, may now be regarded as the standard work | Chirurgical Review. BY THE SAME AUTHOR. ON CONSTITUTIONAL AND HEREDITARY SYPHILIS, AND ON SYPHILITIC ERUPTIONS. In one small octavo volume, extra cloth, beautifully printed, with four exquisite colored plates, presenting more than thirty varieties of syphilitic eruptions, f 2 25. BY THE SAME AUTHOR. {Just IssUed.) HEALTHY SKIN; A Popular Treatise on the Skin and Hair, their Preserva- tion and Management. Second American, from the fourth London edition. One neat volume, royal 12mo., extra cloth, of about 300 pages, with numerous illustrations. $1 00 ; paper cover, 75 cents. WHITEHEAD (JAMES), F. R. C. S., &c. THE CAUSES AND TREATMENT OP ABORTION AND STERILITY; being the Result of an Extended Practical Inquiry into the Physiological and Morbid Conditions J of the Uterus. Second American Edition. In one volume, octavo, extra cloth, pp. 36S. $175. WALSHE (W. H.), M. D., Professor of the Principles and Practice of Medicine in University College, London. DISEASES OF THE HEART, LUNGS, AND APPENDAGES; their Symptoms and Treatment. In one handsome volume, extra cloth, large royal 12mo., 512 pages. ft 50. We consider this as the .ablest work in the En- I the author being the first stethoscopist of the day — glish language, on the subject of which it treats; | Charleston Medical Journal. WILDE (W. R.), Surgeon to St. Mark's Ophthalmic and Aural Hospital, Dublin. AURAL SURGERY, AND THE NATURE AND TREATMENT OF DIS- EASES OF THE EAR. In one handsome octavo volume, extra cloth, of 476 pages, with illustrations. $2 80. This work certainly contains more information on laws, and amenable to the same general methods of the subject to which it is devoted than any other treatment as other morbid proces.ses. The work is with which we are acquainted. We feel grateful to not written to supply the cravings of popular patroii- the author for his manful effort to rescue this depart- age, but it is wholly addres.sed to the profession, and ment of surgery from the hands of the empirics who bears on every page the impress of the reflections nearly monopolize it. We think he has successfully of a sagacious and practical surgeon.— Ta. Surg, and shown lliat aural diseases are not beyond the re- Med. Journal. sources of art; that they are governed by the same 32 BLANCHARD & LEA'S SCI E N TIF IC PUBLICAT 1 ONS. WEST (CHARLES), M. D., Accoucheur to and Lecturer on Midwifery at St. Bartholomew's Hospital, Physician to the Hospital for Sick Children, ice. LECTURES ON THE DISEASES OF INFANCY AND CHILDHOOD. Second American, from the Second and Enlarged London edition. In one volume, octavo, extra cloth, ol nearly five hundred pages. (Just Issued.) $2 00. We take leave of Dr. West with great respect for his attainments, a due appreciation of his acute powers of observation, and a deep sense of obliga- tion for this valuable contribution to our profes- sional literature. His book is undoubtedly in many respects the best we possess on diseases of children. Dublin Quarterly Journal of Medical Science. Dr. West has placed the profession under deep ob- ligation by this able, thorough, and finished work upon a subject which almost daily taxes to the ut- most the skill of the general practitioner. He has with singular felicity threaded his way through all tlie tortuous labyrinths of the difhcult subjecthe has undertaken to elucidate, and has in many of the darkest corners left a light, which will never be extinguished. — Nashville Medical Journal. BY THE SAME AUTHOR. {Nearly Ready.) Puhli-^hing i7i the '■'Medical News and Library^'''' for 1S56. LECTURES ON THE DISEASES OF WOMEN. In two parts. Part I. 8vo. of about 300 pages, comprising the Diseases of the Uterus. Part I[. {Pre/paring)., will contain Diseases of the Ovaries, and of ail the parts connected Willi the Uterus ; of the Bladder, Vagi.na, a.nd External Organs. The object of the author in this work is to present a complete but succinct treatise on Female Di»etl^^es, embodying the results of his experience during the last ten years at St. Bartholomew's and the Midwilery Hospitals, as well as m private practice. The characteristics which have se- cured to his former works so favorable a reception, cannot fail to render the present volume a -standard authority on its important subject. To show the general scope of the work, an outline ol the Contents of Part I. is subjoined. Lectures J, II. — Introductory — Symptoms — Examination of Symptoms — Modes of Examina- tions. Lectures ///., IV , V — Disorders of Menstruation, Amenorrhoea, Menorrhagia, Dys- menorrhosa. Lectures VI., VII., VIII. — Inflammation of the Uterus, Hypertrophy, Acute Inflammation, Chronic Inflammation, Ulceration of the Os Uteri, Cervical Leucorrhoea. Lectures IX , X., XL, XII , XIII. — Misplacement of the Uterus, Prolapsus, Anleversion, Retrover- sion, Inversion. Lectures XIV., XV., XVI. , XVII. — Uterine Tu.mors and Outgrowths, Mucous, Fibro-cellular, and Glandular Polypi, Mucous Cysts, Fibrinous Polypi, Fibrous Tumors, Fibrous Polypi, Fatty Tumors, Tubercular Diseases. Lectures XVII1.,'XIX., XX. — Cancer OF the Uterus. Part IL will receive an equally extended treatment, rendering the whole an admirable text-book for the student, and a reliable work for reference by the practitioner. BY the same author. {Just Issued) AN ENQUIRY INTO THE PATHOLOGICAL IMPORTANCE OF ULCER- ATION OF THE OS UTERI. In one neat octavo volume, extra cloth. $1 00. WILLIAMS (C. J. B.), M. D., F. R. S., Professor of Clinical Medicine in University College, London, &c. PRINCIPLES OF MEDICINE; comprising General Pathology and Therapeu- tics, and a brief general view of Etiology, Nosology, Semeiology, Diagnosis, Prognosis, and Hygienics. Edited, with Additions, by Meredith Clymer, M. D. Fourth American, from the last and enlarged Loudon edition. In one octavo volume, leather, of 476 pages. $2 50. The best exposition in our language, or, we be- I Few books have proved more useful, or met with lieve, in any language, of rational medicine, in its | a more ready sale than this, and no practitioner present improved and rapidly improving state. — I should regard his library as complete without it. British and Foreign Medico-C hirurg . Revieio. \ — Ohio Med. and Surg. Journal. YOUATT (WILLIAM), V. S. THE HORSE. A new edition, with numerous illustrations; together with a general history of the Horse; a Dissertation on the American Trotting Horse ; how Trained and Jockeyed; an Account of his Remarkable Performances; and an Essay on the Ass and the Mule. By J. S. Skinner, formerly Assistant Postmaster-General, and Editor of the Turf Register. One large octavo volume, extra cloth. $1 50. The attention of all who keep horses is requested to this handsome and complete edition of a work which is recognized as the standard authority on all matters connected with veterinary medi- cine. The very low price at which it is now ottered, free by mail, places it within the reach ol every one. BY the same author. THE DOG. Edited by E. J. Lewis, M. D. With numerous and beautiful illustrations. In one very handsome volume, crown Svc, crimson cloth, gilt. $1 25. ILLUSTRATED MEDICAL CATALOGUE. BLANCHARD & LEA have lately issued a Catalogue of their Medical, Surgical, and Sci- entific Publications, containing descriptions of the works, with Notices of the Press, and specimens of the Illustrations, making a very handsome pamphlet of sixty-foiu* large octavo pages. Copies will be sent by mail, and the postage paid, on application to the Publishers, by inclosing six cents in postage stamps. UNIVERSITY OF CALIFORNIA AT LOS ANGELES THE UNIVERSITY LIBRARY This book is DUE on the last date stamped below I 9 r969j ^^^^^^ '87 AUG 1 5 RECD AUG 1 2 RBffl BIOMED M 2 74 JANISREC'O biomeW FEB 8 RECO BlOMEOBIOME&iid^^d AUG 3 RECO SEP ^^^^^ RECD Form L-9-15))i-7.'35 SEP 8 1987 UNIVEKi .1 CALIFORNIA LOS ANGELES LIBRARY I \ #