< / ANTENATAL PATHOLOGY AND HYGIENE WILLIAM GKEEN k SONS BV U0KRI80N AND OIBB LIMITRD. Frhruury 1002. MANUAL OF ANTENATAL PATHOLOGY AND HYGIENE- THE FOn'US J. W. BALLANTYNE, M.D.. F.R.C.P.E.. F.R.S.Enix. LECTURER OS MIDWIFERY AND GYNECOLOGY, MEDICAL COLLEGE KOR WOMEN, EDINBURGH ; LECTURER ON ANTENATAL PATHOLOGY AND TERATOLOGY IN THE UNIVERSITY OF EDINBURGH (IWKI): EXAMINER IN MIDWIFERY IN THE UNIVERSITY OF EDINBURGH; ASSISTANT PHYSICIAN, ROYAL JIATERNITY HOSPITAL, EDINBURGH : HONORARY FELLOW OF THE GLASGOW OBSTETRICAL AND GYNECOLOGICAL SOCIETY, AND OF THE AMERICAN ASSOCIATION OF OBSTETRICIANS AND GYNECOLOGISTS. E D I N B U E G H WILLIAM GREEN cK: SONS PUBLISHERS 1902 \- V-' G7.NtRAL NAT IS ET NASGITUB.IS 1:^309:^ Qui in ufcro est, pro jam naio habe/ur LEGAL MAXIM PREFACE 1 HAD hoped within the compass of one vohinie to have presented the whole subject of Antenatal Pathology and Hygiene. It was mj purpose to have included not only the physiology and the diseases of the fojtus, but also the monstrosities of the embryo and the morbid states of the germ. I have been compelled, however, to devote this volume to Fcetal Physiology and Pathology alone, leaving Teratology and Morbid Heredity to be treated in a separate but a companion book, which may be regarded as Section II. of this Manual. To have done otherwise, would have been to swell the work to an unwieldy size and to delay its appearance unduly. There have been many workers in this field of research, and their work has lieen most fruitful ; but each investigator has seldom had an opportunity of studying more than a few specimens of foetal disease and deformity, and has, in consequence, been led to concentrate his attention upon the special pathological conditions which came in his way. I, on the other hand, have had the extraordinary fortune to be able personally to examine nearly three hundred specimens, embracing almost all the leading types of antenatal morbid states, and I have thus been enabled to take a somewhat wide view" of the whole subject. Further, many other workers have been generously ready to put their own material at my disposal for inspection ; and I have also read very widely the literature of the subject and of allied departments of medicine and biology. I began this work in a spirit of something very like active curiosity, I have prosecuted it with an ever-deepening interest, and I have brought it thus far with the growing sense that I have been dealing with a suljject of tremendous importance for the future of the race and the individual, with, in fact, jrrcre7itivc medicine in its simplest and most hopeful because in its earliest aspects. If we but knew the laws which govern antenatal health and the causes which produce antenatal disease aud death, what might we not expect the possibilities of Hygiene to grow to 1 In writing the book, I have honestly tried to avoid the four grounds viii IM'.KIACK I if Jiiimaii ignorance set ff>rth so long ago by Eoger Bacon: trust in ina(kM|iiate autliority, tlie force of custom, tlie opinion of tlie iuex- ]pcrienced crowd, and tiic liiding of one's own ignorance with the jiarading of a superficial wisdom. I dare not liope that I have always succeeded ; many times I ought perliaps to liave said, " I '111 not know," where I liave set forth higli-sounding theories: l)ut I have done what seemed at tlie time possible. Only one or two furtlier prefatory sentences need be added. I iiave avoided, as far as po.ssilile, Imrdening tlie te.vt witii liibliograiiliical references, and have endeavoured rather to cite articles which tliem- .selves contain full lists of literature; I have, for instance, often referred to coutril)uti<)ns of my own, which iiave appeared elsewhere, wliidi fulfil tiiis reipiirement. In the Appendi.x will l)e found a list of my writings on Antenatal I'athology and cognate subjects, and the nuiidiers within brackets which appear in the text refer to this list. Tlie historical aspects of the subject have scarcely been touched : they are described in detail in the first volume of my work. The Diseases i)f the Fo'.fns. Tlie illustrations are nearly all from specimens in my own collection; but for Figs. 9, 24, 28,32-44, and 50 I am indebted to otlier workers. The investigatirm of most of tiie specimens was carried out in the Laboratoiy of the Itoyal College of I'liysiciaiis, Edinldirgh. I cannot adiMpiately express my indelitedness to my friend, Dr. Joiix Tho.msox, who has not only read every proof with painstaking solicitude, but has also given me advice of great value ami that unstintedly. To my Publisher my best thanks go freely, and they are well deserved, for he has constantly endeavoured to meet my wisiies with regard to every detail. J. W. BALLANTVNK. 21 Mei.vii.i.k Stuket, EiiiNmiKJii, January i, 1902. CONTENTS BOOK I ANTENATAL IX RELATIOX TO POSTNATAL AND ^ NEONATAL rATnOL(JGY CHAPTER I The Novelty of Antenatal Pathology : its Definition, Emergence, and Literature ; Age-incidence of Morbid Processes ; Divisions of Ante- natal Life ; Scheme of Antenatal Life ; Suljdivisions of Antenatal Pathology ; Signs and Causes of Increased Interest in Antenatal Pathology CHAPTER II The Relation of Antenatal Pathology to the other Branches of Study : Scheme of Relationships ; Relation to General Pathology ; Relation to the Biological Sciences — Anatomy, Embryology, Physiology, Bt)tany, and Zoology ; Relation . to the Medical Sciences — Obstetrics, Public Health, Pediatrics, Medicine, Psychology, Dermatology, Surgery, Ortho- pedics, and Medical Jurisprudence ; Relation to Gynecology and Neonatal Patholog}- ....... CHAPTER III The Postponed Effect of Antenatal Pathology ; the Antenatal Factor in Gynecology ; Traumatism, Infection, Antenatal Conditions ; the Antenatal Factor in the Morbid Anatomy, Symptomatology, Etiology, Diagnosis, Prognosis, Therapeutics, and .lurisprudence of Gynecology . CHAPTER IV The Immediate Effect of Antenatal Pathology ; the Antenatal Factor in Neonatal Pathology ; the Neonatal Period of Life ; Physiology of Neonatal Life ; Physiological Traumatism of Birth, including the Pressure Effects and the Separation Effects ; Physiological Readjust- ment at Birth, and its Influence upon the Characters of the Maladies of the New-ljorn Infant ; Anatonncal Readjustment ; the Antenatal Factor and its Influence upon Neonatal Pathological Processes . CONTKNTS CHAITKR V Types of Neonatal Disease, illustrating the Intrusion of the Antenatal Factor : (1 ) Inti-acranial Traumatisms, Cephalhiematoma Ntona- toruni, Facial Panilysis, Frarlurcs of the Long Bone?, Dislocations; (2) Intranatal Infections, (Ijilithalniia Neonatorum, Ha>matoma of the Stcrno-Mastoiil, M;istitis Neunatnruni . . . . .44 L'HAPTEl! VI Tj-pes of Neonatal Disease, illustrating the Intrusion of the Antenatal Factor (aini.) ; (3) Neonatal Infections, Tetanus Neonatorum, Ery- sipelas Neonatorum, Sepsis Neonatorum, Hiemoglohinuria Neona- torum, Omphalorrhagia Neonatorum ; (4) Disturbed Neonatal Re- adjustments, Icterus Neonatorum, Mela-na Neonatorum, Keratolysis Neonatorum, Pemphigus Neonatorum, Sclerema Neonatorum, Asphyxia Neonatorum, Neonatal Heart Disease ; Summary . . .57 BOOK II THE PATHOLOGY AND HYGIENE OF THE FOiTUS CHAPTER VII Diseases of the Foetus ; General Characters of Ffetal Life ; Contrast between Embryonic and Fa'tal Life ; The Neoftetal Period ; Anatomy and Physiology of the Neofirtal Period ; External, Internal, and Environ- mental I'hanges in the Neufotal Epoch ; Fivtal (Irowth and Develop- ment at the Successive Months of Intrauterine Life ; Summary CHAPTER VIII Anatomy of the Mature Fcetus. Anatomy of the Region of the Head, Spine, Neck, Thorax, Abdomen, Pelvis, and Limbs. Anatomy of the Umbilical Cord, Placenta, and Membranes .... CHAPTER IX Physiology of the Fietus : General Statements ; Sources of Information ; Ftctal Circulation, Extra-corporeal or Placental, Intra-corporeal with Main Current and Secondary Circulations ; Cardiac Activity, Pecu- liarities ; Pulse ; Blood in the Fictus, Characters ; Respiration in the Fietus ......... CHAPTER X Physiology of the Fretus (eonl.) : Tem]ierature of the Futvis ; Chemical Com])05ition of Fietus, Placenta, and Li(iuor Amnii ; Nutrition of the Fatus, by Liquor Amnii, Umbilical Vesicle, and Placenta ; Secretions of the Futus, Hepatic, Buccal, IJastric, Pancreatic, etc.; Excretions of the Fietus, Intestinal, Renal, Placental : Passjige of Substances from"' Fietus to Mother ; Internal (Jlandular Secretions in Fietus, of Thymus, Thyroid, Suprarenal Capsule, and Pituitary Body ; Growth of the Fietus, Determining Factors ; Movements of the Fictus ; Sensa- tion in the Fietus ........ CONTENTS CHAPTER XI Fa'tal Pathology : General Principles. ■ Scope of Fatal Patliology ; Causes of Limited Knowledge ; Fn-tal Morbid States ; Classification ; Causes of Peculiarities of Fa'tal Diseases — (1) Influence of Intrauterine Environment; (2) The Placental Factor; (3) The Embryonic Factor . 17: CHAPTER XII Types of Transmitted Fcetal Diseases : Frrtal Variola ; Pathogenetic Possi- bilities ; Clinical Peculiarities ; Diagnosis, Prognosis, and Treatment. Fa-tal Vaccinia ; Antenatal Immunity. Fcetal Measles, Scarlet Fever, Erysipelas, Parotitis, Influenza, Pertussis, Relapsing Fever, Yellow Fever, and Cholera. Ftetal Typhoid ; Pathogenetic Possibilities ; Widal Test in the Fcetus. Fietal Malaria ; Observations ; Patho- genetic Possibilities . . . . . . . 18J CHAPTER XIII Types of Transmitted Ftctal Diseases : Ftetal Tubercle ; Evidence of its Existence ; Causes of its Rarity ; Characters ; Baunigarten's Theory of Latency ; Non-tubercular Manifestations of Antenatal Tubercle ; Pro- phylaxis ; Fcetal Sepsis ; Fietal Epidemic Cerebro-spinal Meningitis ; Fi-etal Purpura ; Fa'tal Pneumonia ; Fujtal Anthrax ; Foetal Rheu- matic Fever ........ ;206 CHAPTER XIV Types of Transmitted F(otal Diseases : Fa'tal Syphilis ; Limitation of the Subject ; Definitions of Infantile, Neonatal, and Fcetal Syphilis ; Morbid Anatomy, General and Special ; Dystrophies of Antenatal Syphilis ; Pathogenesis ; Nature of the Morbid Agent ; Modes of Transmission of the Syphilitic Virus ; Effects of Fatal S3-philis ; Modifying Influences ; Treatment ..... 225 CHAPTER XV Types of Transmitted Toxicological Conditions : Sources of Information ; Problems ; Lead Poisoning ; Mercurial Poisoning ; Phosphorus Poison- ing ; Arsenical Poisoning ; Poisoning with Copper and Sulphuric Acid ; Carbonic Oxide and Coal Gas Poisoning ; Effects of Chloroform and Ether ; Morphin Poisoning ; Tobacco Poisoning ; Alcoholism . . 258 CHAPTER XVI Ill-defined Morbid States of the Fcetus : in Maternal Eclampsia ; Cancer ; Diabetes: Leukaemia; Heart-Disease, etc. ; Conclusions . . 278 CHAPTER XVII Idioijathic Diseases of the Fcetus — Types : General Fertrophic Dilatation of the Jiladder, Hydronephrosis, Cystic Degeneration of the Kidneys : Di.'ieases of the CJe'nital Organs : Congenital Prolapse of the Uterus ; Diseases of the Nervous System : Hydrocephalus ; Little's Disease ; Congenital Chorea ; Friedreich's Ataxia ; Tliomsen's Di.-^ease : Congenital Clouding of the Cornea .... :!7S CHAPTER XXIII Traumatic Morbid States of the Fietus : Fatal Fractures, ■\Vound.s. and Dislocations; Congenital Amputations. Diseases of the Foial Anuexa ; Placental Hiemorrhages : Fibro-Fattv Degeneration of the Placenta ; Morbi.l States of the Umbilical" Cord ; Hvdramnios —Definition, Clinical History, Symptomatology, Physical Signs, Diagnosis, Prognosis, Pathology, Patliogenesis, 'Treatn'ient ; Oligo- hvdramnion . . ' . . so-j CONTENTS xiii I'AUK CHAPTER XXIV lutrautcrine Death uf the Fcotus ; Mechauisui, Firtal Asphyxia aucl Uneniia, Rigor Mortis, Clinical History, Symptomatology, Physical Examination, Diagnosis, Pathology of Maceration, etc.. Abortion, Causes of Fatal Death, Treatment " -tiW CHAPTER XXV Diagnosis of Fulal Morbid States: Difficulties and Scope; Antenatal Diatrnosis, Maternal, Medical, and Reproductive History, Paternal and Family History, Maternal Symptomatology and Physical Examina- tion, Physical Examination of the Fi.lus ; Intranatal and Postnatal Diagnosis ...••■••• CHAPTER XXVI Therapeutics of Fo'tal Diseases: Erroneous Opinions; yaUie of FieUil Life Estimation, Appreciation; Therapeutic Fcvticide ; Possibilities of Antenatal Therapeutics ; Postnatal Treatment of Antenatal Morbul States ; Intranatal Hygiene and Treatment . - • .4.)! CHAPTER XXVII Hygiene and Therapeutics of F.etal Life : the Hospitalisation of the Pregnant- "Plea for a Pre-Maternity Hospital"; "Sanatom de srossesse" ; Hygiene of Pregnancy ; Diet, Occupation, Exercise^ Dress, itc ; Medication of the Fcetus, in Syphilis, Placental Disease, >eryous Maladies, Ha'mophilia ; Transmission of Immunity ; Ciermmal ihera- peutics ; Conclusion .■••••• Appendix. List of Author's Contributions Index of Authors . . • • Index of Subjects . . • ■ 465 489 499 507 LIST OF ILLUSTRATIONS COLOURED PLATES I. Transverse section througli neck of Full-time Ftutus at level of 4th Cervical Vertebra . . . . . .108 II. Transverse section at level of 1st Dorsal Vertebra in same Fujtus 108 III. Transverse section at level of 6th Dorsal Vertebra in same Fretus 110 IV. Transverse section at level of 9th Dorsal Vertebra in same Fcetus 110 V. Transverse section at level of 12tli Dorsal Vertebi'a in same Fcetus 112 VI. Transverse section at level of cartilage between 2nd and 3rd Lumbar Vertebra? . . . . . .112 VII. Transverse section at level of 1st Sacral Vertebra in same Fcetus 114 VIII. Transverse section at level of 4th Sacral Vertebra in .same Fatus 114 IX. Transverse section at level of 3rd Coccygeal Vertebra in same Fcetus . . . . . . . .116 X. Liver from case of Fcetal Syphilis ..... 233 XL Vertical Mesial section of Fa?tus with F(.L'tal Bone Disease (Type B) 339 XII. Vertical Lateral section of trunk of Fcutus with Ascites and Dis- tension of Bladder . . . . . ' . 355 XIII. Vertical Mesial section of Pelvis of Infant with Prolapsus Uteri . 355 XIV. Vertical Mesial section of Macerated Ftctus . . .422 FIGURES IN THE TEXT 1. Divisions of Antenatal Life ...... 8 2. Scheme of Antenatal Life . . . . . .11 3. Relations of Antenatal Pathology . . . . .18 4. Scheme of Morbid Factors ...... 24 5. Cephalhieraatoma and Facial Paralysis in New-born Infant (left side) ......... 47 6. 7. Microscopic appearances of Desquamation of Cuticle in New-born Infant, High and Low Powers ..... 73 8. Microscopic appearancees of Skin in Sclerema Neonatorum . . 75 LIST OF ILLUSTRATIONS 9. 10. n. 12. 13. 14. 1.5. 10. 17. 18. ly. 20. 21. 22. 23. 24. 25. 20. 27. 28. 29. 30. 31. 32, 34. 3J. 30. 37. 38. 39. 40. 41- 45. 40. 47. 48. 49. 50. Embryo of 38 days — " Transition Organi.sni "—After His Fa'tus of 50 clays (circa) ..... Scheme of Ftrlal Growtli in Length .... Scheme of Fdtal Growlli in Weiglit .... Scheme of Phicental (irowth in Weiglit Scheme of Relative Devcloimient of various jiarts of Ftetus . Outline of Unmouldeil Fcital Head .... Outline of Head of New-born Infant .... Sagittal Mesial section of Full-time Fa^tus Lateral Vertical .section of Full-time Fa'tus Coronal section of Head of Full-time Fa'tu.s, through orbits . Coronal section of Head of Full-time Fcitus, through ears Vertical Sagittal section of Pelvis of Male Fulltime Fotus . Vertical Sagittal section of Pelvis of Female Full-time Fcetus Pelvic Viscera of Si.\ Months' Female Futus . Scheme of Fietal Circulation. After W. Preyer Sphygniogra])liic Tracing from Infant, 5 minutes after Birth Sphygmographic Tracing from Infant, days old Placenta with Persistent Unil)ilical Vesicle and Vitelline ^'essels Fcetal Variola. After Laurens .... Section of Tricuspid Valve of Heart from case of Fa-t;il Endocarditi Vertical Mesial section of Fii-tus with General Dropsy Appearances of Head and Face of Fcetus with General Dropsy 33. Cystic Elephantiasis in the Fa'tus. After A. Meckel Infant with Congenital Elephantiasis of right lower limb. After Moncorvo . . .... Fa'tal Ichtliyosis. After Straube .... Fatal Ichthyosis. After Kyber .... Skin of Palm of Hand in Fatal Ichthyosis. After Kyber Sections of Skin in Fatal Ichthyosis, Chest and Head. After Kybc Skin of Normal Infant. After Caspary Skin of Infant with Ichtliyosis of Minor Degree. After Caspary 44. The Hairy Family, Vo7i Ambriis .... Infant with Acanthoma or Amnioma of the Hairy Scalji Microscopical Appearances of Acanthoma or Amnioma E.vternal Appearances of Foitus with Bone Disease (Type B) E.xternal Appearances of Fa'tus with Bone Disease (Type C) Appearances of Lower Limbs and Pelvic Region of the same . E.Kternal Appearances of Fatus with Bone Disease (Type D). Afte Villa External Appearances of Fa'tus with Bone Disease (Type E) External Appearances of Fietus with Ascites . Microscopic Appearances of section of Abdominal Wall fioMi same Apjiearances of External Genitals of same External Ai>pearances of Fatus with Congenital Goitre 80 80 94 95 90 97 100 10 1 102 103 104 105 117 lis 119 128 138 138 155 191 197 291 293 299 302 309 310 311 312 310 317 322 331 332 338 341 341 347 351 359 300 301 374 .1 MANUAL OF ANTENATAL PATHOLOGY AND HYGIENE BOOK I ANTENATAL IN EELATION TO POSTNATAL AND NEONATAL PATHOLOGY CHAPTER I The Novelty of Antenatal Pathology ; Its Definition, Emergence, and Literature ; Age-incidence of Morbid Processes ; Divisions of Antenatal Life ; Scheme of Antenatal Life ; Subdivisions of Antenatal Pathology ; Signs and Causes of Increased Interest in Antenatal Pathology. Antenatal Patholocjy is to some extent a new department of medi- cine. With it, however, as with many other new things, the novelty consists more in the point of view froua which the subject is regarded, and in the mode of considering it which is adopted, than in the nature of the subject itself. From the earhest times congenital diseases and monstrosities and morbid predispositions have been known, and to some extent studied ; but it is only within recent years that the information gathered together regarding them has been systematised, and that monstrosities as well as diseases have been shown to be capable of scientific investigation, and to be possessed of practical interest. Antenatal Pathology, therefore, is new, but only in a limited sense. Nevertheless, Antenatal Pathology, more perhaps than any other branch of medical study, requires an introduction which shall be also an explanation. To some extent it may be thought to need a vindication — to be in want of a reason for its existence. Lately unborn among the sciences, it has but recently seen the light, and, like all new-born things, has a hold on life which is uncertain. Full, no one can doubt, of great possibilities, if it be able to reach maturity ; but apparently so weak as to suggest to the careless observer little chance of that. Yet not so long ago was bacteriology — even as Antenatal Pathology now is — provoking the criticism, that the study 2 ANTKNATAI. I'A TllOLOdV AM) HVdlKNE of organisiiis so minute as trime import. In it.s alnsuuil depths are the teratological records of Chaldea (70),' written in cuneiform character on the Ijrick tablets of the great mound of Koyunjik near tiie Tigris, containing a long list of mon- strous infants, with the divinatory meaning of each one of them : for teratoscopy had reached a high development in Ijabylonia, and the fall of a kingdom, the winning of a battle, and the occurrence of a famine, and nmch else, were foretold from the birth of a malformed fu'tus. Vanisiiing traces of the teratological occur- rences of primitive times among primitive peoples are also to be found in the deformed deities which the heathen ignorantly wor- ship, and in the folk-hn-e of many nations. Of all the valualde things rescued from the bibliographic sea of teratological literature, nothing is of just so much value as the part of Aristotle's works which deals with monstrosities, both human and of animals. In the " Generatio " and the " Historia AnimaHum " is displayed a knowledge of the meaning and cause of malformations such as was not equalled in later history till the times of the Saint- Hilaires, in tlie dawn of the nineteenth century. In the writings that have come down to us under the name of Hippocrates, there is not much tliat concerns monstrosities, but there are admirable descriptions of congenital dislocations, and disquisitions on morbid heredity, which cannot fail to interest the antenatal pathologist (83). These things, however, are all deep down in the ocean of literature, and it is not till we come near to the surface tliat there is again much of value to reward our search. From 300 B.C. to 1700 A.D., works on monstrosities (it is imjiossible to men- tion works on ftetal disease and morbid predisposition, for they did not exist) have a value which is quite apart from the cases and specimens which are described in them ; they throw interesting side-lights upon the manners, customs, and beliefs of the times ; but as to scientific Teratology they are singularly dark. During these centuries deformed fictuses took their place alongside comets, earth- quakes, showers of frogs, mock suns, and the like : aiul were com- monly regarded as prodigies, or as warnings of impending evil, or as manifestations of the divine anger. From the lieginning of the eighteenth century scientific works on monstrosities began to appear, and have continued to appear, until now one may easily gather together many hundreds of treatises, atlases, monographs, theses, and articles dealing with teratological subjects. In 1702, also, there appeared the first separate work treating of ftctal diseases, as distinguished from monstrosities, the treatise namely of Diittel, entitled "De morbis fo'tuum in utero materno," and presented for the degree of medicine in the University of Halle, under the presidency of F. ' The figures within parentheses refer to the bibliographical list of the author's published works. AGE-INCIDEXCK OF MOURIIJ I'ROCKSSES 5 Hoffmann (66). Since then the study of tlie diseases of the foetus, as distinct from tlie monstrosities, has made great advances, until now there has been accumulated a large library of books bearing on this subdivision of Antenatal Pathology. Still more near the surface of the ocean of literature (to return for a moment to our comparison) lie the works in which the morbid predispositions to diseases and deformity, and the mysterious phenomena of heredity, are considered ; in them is to be found much that is of value, along with much that is at the best hypothetical. This, then, is the literature of Antenatal Pathology, or rather it is the literature upon which it is hoped that the subject of Antenatal I'athology may yet be built up ; for few, if any, attempts have been made to bring together the monstrosities, and the fcetal diseases, and the morbid predispositions, and treat them as subdivisions of one separate and self-contained department of medicine. It is in this that the novelty of Antenatal Pathology consists ; the subject is surveyed from a new point of view, with a vastly widened horizon. The Age-Incidence of Morbid Processes. It is conceivable that morl.iid influences may act upon the individual during thi-ee epochs in his existence : they may act after, during, or before birth. In other words, their influence may be exerted in postnatal, in intranatal, or in antenatal life. The results of their action vary with the period during which they act, and hence it conies that there is a postnatal, an intranatal, and an antenatal subdivision of pathology. It goes without remark that it is about postnatal pathology that most is known, for from birth up to death morbid causes are seen at work, and their effects are patent to all. Injuries, poisons, microbes, and parasites all play a part in producing the numerous and varied changes in the structure and functions of the body so fully described in medical and surgical text-books. When pathology is spoken of, it is usually postnatal pathology tliat is meant. Even in postnatal pathology the age-incidence of morbid processes can be i-ecognised as an important subdividing factor ; differences tliere are between the pathological changes which are characteristic of advanced age and those which occur in adult life, or in childhood, or in infancy. The rheumatism of childhood, for instance, is very different in its clinical manifestations from that of adult life. In the former, erythema marginatum and papulatum, painless subcutaneous nodules situated over the bony prominences of the knee, elbow, ankle, and spine, and endocarditis and chorea are marked symptoms ; while acute pain and tenderness in the joints, high fever, and profuse sweating are often entirely absent. In the rheumatism of adult life, on the other hand, erythemata, nodules, and cliorea are uncommon, while grave arthritic developments are frequent. Heart disease also differs in its characters according as it is met with in the child or adult ; and there is the typical senile heart. The differences, however, which mark off these epochs of post- AM I'.NATAI, 1'A111()I.()(;Y AND llVdll'.NE iiiital patholugifal life frmii inie ancjllier are small when contiasttil with the characters whicli serve to distinguish neonatal from post- natal niorhid chani^es, ami very small indeed when jjut alongside the ileep-seated diversity of antenatal jiathology. The difi'erences found in the diseases of tiie new-born have given origin to a separate nomen- clature for them, a neonatal nosology ; and we speak of icterus neonatorum, sy])hilis neonatorum, and mela-na neonatorum as if they were superficially difl'erent, at any rate, from the jaundice and the sypliilis and the mehena of the adult. But such dissimilarity exists between the pathological phenomena which occur before birth, and those which are met witli after it, as to suggest essential diHerences in mxture and causation. This is specially true of teratological phenomena. They are startlingly unlike anything else in the whole range of piathology. Jt is to this peculiarity more than to any other that Teratology owes the isolated position that it has so long occupied. Like Corea among the nations has Teratology been among the sciences : a hermit kingdom, a hermit science ! To the onlooker it has seemed as if neither had any part to play outside its own narrow limit.s. Yet is the whilom hermit subject capable of profoundly influencing the other departments of medical research and of being influenced by them. As the subject opens out we shall see in detail what these age-incidence ditlerenees in pathology consist in ; meanwhile, it may be repeated that from this standpoint there is a pathology of post- natal life, of intranatal life, and of antenatal life. The Divisions of Antenatal Life. On first thoughts, the nine months of intrauterine life and the twelve hours of intranatal transition seem small and of little imp(irt in comparison with the threescore and ten years to which it is expected that postnatal life may be prolonged. It is doubtful, how- ever, if any twelve hours after birth are just so full of possibilities, physiological and pathological, as is the time during which the foHus is passing through the maternal canals ; and it is certain that no period of nine mouths in childhood, in adult life, or in old age is so replete with occurrences, so diverse in kind, and of such far-reaching importance as is that spent by the unborn infant in utero. Thei'e is an intensity and a variety in the processes of antenatal life which have no equal at any other time. Therefore, notwithstanding the shortness of intrauterine existence, it has become necessary to sulidivide it into at least three periods, and between these there is the same deep-seated diversity as that wiiich marks off antenatal life from the rest of life. Further, it is no exaggeration to say that few medical men have a very clear conception of the ]irogress of events during antenatal life. The drama of embryonic and ftetal develop- ment and growth is, so to speak, going on, but the curtain has not been rung up, and the spectators get only confu.sed impressions from the swaying of the drop-scene and from vague sounds, excursions and alarms, coming from behind it : yet no one doubts the existence of great activity post cortina^n thcatri, and some from superior know- DIVISIONS OF ANTEXATAL LIFE 7 leds^'e can judge how preparations are progressing. The accompanying scheme of the divisions will serve, taken in conjunction with the descriptive notes, to give to the mind a somewhat clearer conception of the chronology of the period of preparation for the great events of postnatal life : it ^vill take the place of the prologue in explaining the action of the to be enacted drama (Fig. 1). In constructing the scheme 1 have employed the " space-for- time ■' method introduced into medical case-recording by Mr. Jonathan Hutchinson, and described by him in 1896 {Aivh. Stirr/., 1896, vol. vii. p. 199). By this plan, all periods of time are repu'esented in the schedule by equal e.xtents of space, no time is left out, and the whole duration of the antenatal epoch, with its various events in their proper places, is brought correctly before the eye. Each interspace in the scheme represents a week ; and as pregnancy lasts normally for forty weeks, there are forty interspaces intervening between its beginning and end ; but as the month following birth is much influenced by what has happened before birth, and is, indeed, a transition period between antenatal and postnatal life, it also has found a place in the scheme, and has four interspaces. Above the neonatal period are to be imagined the many spaces indicating the many weeks of postnatal existence. The great physiological event of neonatal existence is the adaptation of the organism to its new environ- ment ; the fcetus is suddenly brought into surroundings which demand the functional awakening of several organs which have in intrauterine life been almost if not quite dormant, and structures which have been active have to atrophy, lie absorbed, or be utilised for other than their antenatal purposes. Extrauterine life is linked, as it were, to intra- uterine by this short period of the new-born infant. Immediately Ijefore the neonatal period (below it, therefore, in the schedule ), and separated from it by the event of birth (indicated in the schedule by a thick lilack line), is the fatal epoch. This occupies by far the largest part of pregnancy ; without reckoning the neofo^tal period, it extends from the eighth to the fortieth week, or thirty-two weeks. During its progress the organism shows its vitality chiefly by growth along lines which have been already definitely laid down. In this respect it resembles the postnatal periods of infancy and youth. It is true that the intrauterine environment has very dis- tinctive and peculiar characters — the unborn infant exists in a fluid medium of practically constant temperature, it is protected from traumatism by the maternal structures, and it is shut in from the light ; further, the fcetus has several of its organs almost inactive, and its most important and most active organ, the placenta, is extra- corporeal ; nevertheless, the chief phenomenon of fcetal life is growth, rapid and continuous, along lines already indicated. Within seven (calendar) months, which is the length, roughly speaking, of fcetal life in the human subject, the organism increases from a structure 1 in. in length to one measuring 20 in., and its increase in weight is from 1 oz. to 7 or 8 lbs. During the cmhryonic period of antenatal life, which may be said to begin with the laving down of the first rudiments of the embryo 8 ANT]:NAT.\I, l-ATllOUKiV AM) HV(;iKNK FIG. 1. THE DIVISIONS OF ANTENATAL LIFE / X DIVISIONS OF ANTENATAL LIFE 9 iu the embryonic area of the blastodermic vesicle, and to end about the close of the sixth week of intrauterine life, a very different pro- cess is going on. Tiiere is growth, as in the fcetal period ; it is not, however, simple increase, but evolution or development that is the striking feature of the life of the embryo. The lines along which future growth is to take place are nearly all fixed during the embryonic period ; the outstanding phenomenon is the putting up of the scaflbld- ing of the future body ; the vitality of the period shows itself in organ formation or organogenesis. As in the history of the rise of a great modern city, there is record of a stage in which the mam avenues of traffic are sketched out, and natural olistacles overcome or utilised, to be followed by a period during which growth goes on along the lines of the plan ; so in the story of antenatal life there is the embrj-onic period, in which the cellular elements are arraiiged in groups to form organs, to be followed by the ftetal, iu which these organs simply increase in size, and by their functional activity (in some instances) lead to the growth of the whole organism. This embryonic epoch has a duration of about five weeks, or, if the neofcetal period be included, of about seven weeks. The neofivial is a sort of transition time during which the placental circulation and economy are being fully established ; in the scheme it has had two interspaces (two weeks) allotted to it. Embryonic life, therefore, like foetal life, ends with a transition time or period of adaptation to new conditions ; in the one case, to the changes consequent upon the organism l:)econiing a placentally nomished one, and in the other to the much more radical clianges which atmospheric respiration and gastric digestion entail. Tiie earliest period of antenatal life is the germinal, and only a small part of it, at its close, comes into the epoch of intrauterine existence. It has a long, a very long primary dual period, during which a semi-independent life of a cellular kind is going on in the male and female reproductive cells, the ovum and the spermatozoon. In the scheme a dividing line indicates this primary dual character of early germinal life. The close of the dual period is marked in the case of the ovum by the phase of maturation, and in that of the sperm by the little known but probablj' analogous phenomena of spermato- genesis. Then follows the anteconceptional period, during which there is dehiscence of the ovisac in the female with passage of the ovum along the Fallopian tube towards the uterus, and the spermatozoa are deposited in the vagina ; insemination ends this and begins the next period (intraconceptional), in which it may be said that ovular and sperminal life run together iu impregnation. Inasmuch as it is known that in.semination and impregnation are not of necessity simultaneous, I have thought it well to leave half an interspace (half a week) in the scheme for this e\'ent. The rest of ger-minal life is the unifieil post- conceptional period, during which the morula mass and the blasto- dermic vesicle are forming, and the first traces of the embryo appearing in the embryonic area. In the scheme, therefore, the dividing line is absent in the postconceptional period, to signify its unified character. Germinal life may be said to pass into embryonic 10 ANTKNATAI. I'ATHOLOdV AM) IIYCUENK about the end of tlie first week of iiiliauteiiiie existence, a fact marked by a thick black Hne in the chart. Thus it is seen that antenatiil Ufe can be marked olT into three sub(hvisions — ftotal, embryonic, and germinal — of wliich two only (the fcctal and the embryonic) fall entirely witiiin the i>eri(id of intra- uterine existence, while one (the germinal) stretches back in its beginnings into the cellular life of the jiarents of the individual. It will become evident, as the study of Antenatal Pathology is jau'sued, that each of these three periods is liable to morbid changes which are in a sense jiecnliar to itself, that there is in fact a fo'tal, an endjryonic, and a germinal pathology; but before this matter can be more fully considered, it is necessary to note a somewhat important modification which must be made in such a scheme of antenatal life as that which has been described, if it is to represent what actually occurs. Scheme of Antenatal Life. The second schedule (Fig. 2) gives what may be called the corrected scheme of antenatal life. It will probably have already struck the reader that the division of antenatal existence by hard-and- fast lines into germinal, embryonic, and fcetal periods is not free from error. It is quite evident, for instance, that all the setting up of scallbldings is not ended at the end of the sixth week, nor yet indeed at the end of the thirteenth ; all organogenesis does not take place in the embryonic period, some of it is still going on in the fietal. One part of the organism may be in the embryonic stage while the others are in the foetal phase. In order to represent this fact graphically, I have carried a projection of embryonic life up through the neofa>tal, fa'tal, and neonatal periods into the postnatal. The skeleton and the limbs are good examples of parts of the body whose end)ryology, so to speak, does not end with the endn-yonic epoch ; the uterus and teeth are instances of the projection of the endjryonic still further onwards, i.e. into postnatal life, rrobably no two parts of the developing organism pass out of the end)ryonic into the fojtal condition at just the same time. To revert to the comparison I have already instituted, the progress of the growth of a city is not equal throughout ; one part, e.g. the suburbs, may be little more than planned when another, c.ff. the centre, is already built ; so in the body, the evolution of the limbs is slower than the develop- ment of tlic head and trunk. Again, the gernnnal period does not alu-uptly stop at the end of the first week of pregnancy : the character of abundant luxurious cell formation which so specially belongs to it is projected through the embryonic and foetal periods, and is seen in postnatal life normally in one organ, the reju'oductive gland, testicle or ovary. This is indicated in the scheme, which also rejiresents in a majihie form tlie continuitv of (he germ jilasm and of germinal life. DIVISIONS OF ANTENATAL LIFE 11 FIG. 2. SCHEME OF ANTENATAL LIFE. ..NEONATAL PERIOD. .RETAL PERIOD.. ..NEOFCETAL PERIOD ■ EMBRYONIC PERIOD - FCETAL PERIOD - EMBRYONIC PERIOD - (a) Ovular lite. Sptnottagtatsia. W 5periBln«l llle. N 12 ANTKNATAI. I'All l()I,( )( l^' AND I1V(;1EN]-: Subdivisions of Antenatal Pathology. -lust as ill postnatal life there is an age incidence in disease, so that the maladies of the infant, tiie adult, and tiie aged differ from each other in certiiin details, so in antenatal life morbid processes take on different characters, according as they occur in the fo'tal, in the embryonic, or in the germinal period. There are three main sub- divisions of Antenatal Pathology corresponding to tlie three main subdivisions of antenatal jjhysiological life. There \ii fatal patliology, which is concernetl with tlie diseases of tlie fo'tus ; and the diseases of the foetus are in great measure the diseases of tlie child or adult, modified by the peculiarities of the intrauterine surroundings and the fu'tal economy. There is cmhryonic pathology, or, as it is more commonly called. Teratology, which deals with the monsti'osities of the embryo, for there is good reason to believe that morbid agencies acting on the embryo produce not diseases but malformations and monstrosities. "When the malformed embryo becomes a fo'tus, it carries its malformation with it into the hctal period, and is born with it at the full term of antenatal life ; but the malformation is not, as has sometimes been supposed, the product of late but of early intrauterine pathology. A third part of antenatal pathology is concerned with the action of morbid causes upon the organism in the germinal period, and with the results produced thereby. This may be termed /;*'rj;( nia/ pathology. It includes the consideration of the morbid processes which occur in the ovum at and immediately after impregnation, and also of those that affect the re])roductive cells (sperm as well as germ) before fertilisation : and it has probably to do with double monstrosities (or diploteratology), hydatid moles, included foetuses, blastoderms elliptically deformed and without embryos, and the like. Here must also be considered the very springs of life with their jealously guarded secrets and the hidden mysteries of heredity. Roughly speaking, antenatal pathology may lie regarded as embracing the study of congenital diseases, of monstrosities, and of niorliid predispositions to disease or deformity. This subdivision of Antenatal Pathohigy is not fanciful but real, more real certainly than the separation of postnatal diseases into those of old age, adult life, and childhood. Further, just as in antenatal life the three periods cannot be sharply marked oft' from one another, so the three divisions of Antenatal Pathology cannot be clearly delimited, but show a projection one into another: but of this full details will be forthcoming in later cha])ters of tliis work. Increased Interest in Antenatal Pathology. Of late years there have been several signs of an increasing interest in Antenatal I'athology. A literature has grown u]> around morbid liereility. and there has been much written on the vcxi'd question of the possiljility of acquired characters becoming hereditai-y. In the medical journals the number of articles devoted to subjects of antenatal interest has greatly increased, and this has been specially i l^'^'(VERSiTy j INTEREST IN ANTENATAL PATHO'£6( flK)RNiJ^ l 3 noticeable in the journals of France, Italy, and the United States. Some periodicals 1 now publish occasional periscopes of both Teratology and Antenatal Pathology, and the subject bulks largely in the yearly epitomes of scientific and medical investigation and progress. In Edinburgh there is now (1900) a University Lecture- ship on Antenatal Pathology, and lectures on the subject have also been given (1899) in connection with the ]\Iedical Graduates' College and Polyclinic in London ; and some years ago a quarterly journal entirely devoted to Antenatal Pathology appeared and was continued for two years, living long enough to demonstrate that there was at any rate no lack of material wherewith to till the pages of such a periodical. In a less evident but more permanent manner the ante- natal factor has been making its presence felt in many of the branches of medical study ; and in the diseases of the nervous system, for instance, what may be called the teratological theory of degeneration has of late excited miich interest. The causes of this increased attention to matters of antenatal interest are many and various ; they are economic, scientific, senti- mental, practical, and political. In the first place, to take an eminently practical cause, there has been an increase in the value set upon fcetal life, due to the fact that in certain countries the population is no longer going up by leaps and bounds. A falling birth-rate and an increasing interest in Antenatal Pathology are matters which have come together, not quite fortuitously, in the dawn of a new centurj'. When the birth-rate begins to go down, the value, economic as well as sentimental, of the unborn infant begins to go up. When few infants are being born, it becomes important that they shall come living to the light at the full term, well-formed and healthily cajaable of independent extrauterine existence; and these desirable conditions are evidently largely the result of normal antenatal circumstances. When parents are un- natural enough to determine voluntarily to limit their progeny to two or three, it is natural enough that they should desire that the limited family be a healthy family. " The infants are to be few," they say, " let them then be fine." An unworthy motive, doubtless, but one that has drawn the attention of a nation to puericulture ! Paris has now hospitals where women can rest during the last two months of pregnancy, for it has been found that the women who have to do hard manual labour up to the term of gestation do not have such healthy or such heavy infants as those who are able to rest. Further evidence of the appreciation in the value of fcetal life which has of late taken place, is seen in the crusade amongst obstetricians against what is called therapeutic fa^ticide ; that is to say, against the operations carried out on behalf of the mother which condemn the foetus to certain or to probable death. Among such fceticidal operations are reckoned craniotomy (and other embryulcic procedures) upon the living fretus, prolonged and difficult forceps and version cases in contracted pelves, and artificial premature labour. Into the questions which this crusade has brought to the front it is not my purpose ' Archives of Pediatrics ; St. Zvuis Medical and Sunjical Jowrnal, etc. 14 ANTKNA'I'AI, 1' ATIIOLOCY AM) HY(;iKNK here to enter : tluit there is a crusade is evidence that the life of the fd^tuH is iiKirc lii^'hly valued. (Ireatercare is now taken to save alive prematurely liorn infants, and Maternity Hospitals are in many cases jirovided not only with rouvcuscs but even with specialised wet- nurses; for witli a falling liirth-rate even the six-months fo-tus has a certain, if undetermined, value. All these attempts to conserve f(etal life have brought in their train a closer inquiry into foetal physiology, and more direct investigation of the causes of fojtal disease and deatli. In the second place, the increasing burden, financial and otherwise, upon tlie State, due to the presence in the community of the "unfit," has done something to direct attention more particularly to Antenatal Pathology and Antenatal Therapeutics. There can be no doubt that many of tlie unfit are congeuitally unfit: they come into the world epile])tics or criminals or idiots or paralytics, from their mother's womb. Manifestly it would be much better for the public lieallh and less expensive for the State, if the jinijection of the congcnitally unfit into societ)' could be prevented. I'reventive medicine will not have attained to its highest developments until it has solved the problem of antenatal prevention. I'revention in order to be truly prevention must be antenatal. Within recent years the attempt has been made, by means of the legal restriction of the marriage of the unfit, to ])revent the procreation of the unfit. The attempt has had n