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Price, 00 Cents; to Subscribers, 3.5 Cents. J. FITZGERALD, PUBLISHER, 20 Lafayette Place, NEW YORK. r ^.^€/^n^'/lky/a^. HUMBOLDT ^^PePUL^^ ^CIEfiCE IiI'FEPv^'FU^E.4^^ No. 17.] NEW YORK: J. FITZGERALD. [Fifteen Cents. Jumvy 1, 1!>81. Eatcrtd »t the N«w York FmUMc* u Swosd-CUii Matter. |1.M per Year (IS Niunbers). PEOGEESS: ITS LAW AND CAUSE ; WITH OTHER DISQUISITIONS, VIZ.: THE PUYSIOLOGY OF LAUGHTER— ORIGIN AND FUNCTION OF MUSIC— THE SOCIAL ORGANISM— USE AND BEAUTY— THE USE OF ANTHROPOMORPHISM. BY HERBERT SPENCER. PROGRESS : ITS LAW AND CAUSE. The current conception of progress is somewhat shiftinj;: and indefinite. Some- times it comprehends little mare tiian simple growth— as of a nation in the number of its members and the extent of territory over which it has spread. Sometimes it has ref- erence to quantity of nmlcrial products— as when the advance of auriculture and manu- factures is the topic. Sometimes the supenot quality o-f these products is contemplated : and sometimes the new or improved appli- ances by which they are produced. When, again, we speak of moral or intellectual prog- ress, we refer to the state of the individual or people exhibiting it ; while, when the progress of knowledge, of science, of art, is commented upon, we have in view certain abstract results of human thought and action. Not only, however, is the current conception of progress more or less vague, but it is in ^eat measure erroneous. It takes in not so much the reality of progress as its accom> panimenls — not so much the substance as tha shallow. That progress in intelligence seeo during the growth of the child into the man, or the savage into the philosopher, is com- monly regarded as consisting in the greater number of facts known and laws under- stood : whereas the actual progress consists in those internal modifications of which this increased knowledge is the expression. Social progress is supposed to consist in the produce of a greater quantity and variety of the articles required for satisfying men's Wants ; in the increasing security of person and property ; in widening freedom of action : whereas, rightly understood, social progress consists in those changes of struc- ture in the social organispi which have entailed these consequences. The current conception is a teleological one. The phe- nomena are contemplated solely as bearing on human happiness. Only those changes are held to constitute progress which directly or indirectly tend to heighten human happi- 234 PROGRESS: ITS LAW AND CAUSE. ness. And they are thought to constitute progress simply because they tend to height- en human happiness. But rightly to under- stand progress, we must inquire what is the nature of these changes, considered apart from our interests. Ceasing, for example, to regard the successive geological modifica- tions that have taken place in the earth, as modifications that have gradually fitted it for tlic habitation of man, and as therefore a geological progress, we must seek to deter- mine the character common to these modifi- calions — the law to whicli they all conform. And similarly in every other case. Leaving out of sight concomitants and beneficial con- sequences, let us ask what progress is in itself. In respect to that progress which individ- ual organisms display iti the course of their evolution, this question has been answered by the Germans. The investigations of Wolflf, Goethe, and Von Baer have estab- lished the truth that the series of changes gone through during the development of a seed into a tree, or an ovum into an animal, constitute an advance from homogeneity of structure to heterogeneity of structure. In its primary stage, every germ consists of a substance that is uniform throughout, both in texture and chemical composition. The first step is the appearance of a difference between two parts of this substance ; or, as Hie phenomenon is called in physiological Language, a differentiation. Each of these differentiated divisions presently begins itself to exhibit some contrast of parts ; and by and by these secondary differentiations be- come as definite as the original one. This process is continuously repeated — is simul- taneously going on in all parts of the grow- ing embryo ; and by endless such diffcreu- tations there is finally produced that complex combination of tissues and organs constitut- ing the adult animal or plant. This is the history of 3.11 organisms whatever. It is set- tlcii bei^oud dispute that organic progress consists in a chang;; from the homogeneous to the heterogeneous. Now, we propose in the first place to jfciow, tliat this law of organic prrjgress is the law of all progress. Whether it be in the development of the earth, in the develop- ment of life upon its surface, in the develop- ment of society, of government, of manufac- tures, of commerce, of language, literature, science, art, this same evolution of the simple into the complex, through successive dif- ferentiations, holds througiiout. From the earliest traceable cosraical changes down to the latest results of civilization, we shall find that the transformation of the liomogeneous into the heterogeneous, is that in which prog- ress essentially consists. With the view of showing that if the nebular hypothesis be true, the genesis of the solar system supplies one illustration of this law, let us assume that the matter of which the sun and planets consist was once in a diffused form ; and that from the grav- itation of its atoms there resulted a gradual concentration. By the hypothesis, the solar system in its nascent state existed as an in- definitely extended and nearly horaogencoiii medium — a medium almost homogeneous in density, iu temperature, and in other physi- cal attributes. The first advance toward consolidation resulted in a differentiation lie tween the occupied space which the nebulous mass still tilled, and the unoccupied space which it previously filled. There simultane- ously resulted a contrast in density and a contrast in temperature, between the interior and the exterior of this mass. And at the same time there arose throughout it rotatory movements, whose velocities varied accord- ing to their distances from its centre. These differentiations increased in number and de- gree until there was evolved the organized group of sun, planets, and satellites, which we now know — a group which presents numerous contrasts of structure and action among its members. There are the immense contrasts between the sun and planets, in bulk and in weight ; as well as the subordi- nate contrasts between one planet and another, and between the planets and their satellites. There is the similarly marked contrast between the sun as almost station- ary, and the planets as moving round him with great velocity ; while there are the sec- ondary contrasts between the velocities and periods of the several planets, and between their simple revolutions and the double ones of their satellites, which have to move round their primaries while moving round the sua. There is the yet further strong contrast be- tween the sun and the planets in respect of (.wnperature ; and there is reason to suppose Ihat the planets and satellites differ from each other in their proper heat, as well as in Bie heat they receive from the sun. When we bear in mind that, in addition to iiese various contrasts, the planets and satel- lites also differ iu respect to their distances from each other and their primary — in re- spect to the inclinations of their orbits, the inclinations of their axes, their times of rota- tion ou their axes, their specific gravities, and their physical constitutions — we see what a high degree of heterogeneity the solar system exhibits, when compared with the almost comj)lete homogeneity of the nebu- lous mass cut of which it is supposed to have originated. Passing from this hypothetical illustration, which must be taken for what it is worth, without prejudice to the general argument, let us descend to a more certain order of evi- dence. It is now generally agreed among geologists that the earth was at first a mass of molten matter ; and that it is still tluid and incandescent at the distance of a few miles beneath its surface. Originally, then, it was homogeneous in consistence, and, in virtue of the circulation that takes place in heated fluids, must have been comparatively homo- geneous in temperature ; and it must have been surrounded by an atmosphere consisting Loo^ ^54 7?i 7 re variously exemplified. The change from the homogeneous to the heterogeneous is dis- played equally iu the progress of civilization as a whole, and in the progress of every tribe or nation ; and is still going on with increas- ing rapidity. As we see in existing barbarous tril)es, society in its first and lowest form is a homogeneous aggre-gatinn of individuals having like powers and like functions : the only marked difference of function being that which accompanies difference of sex. Every man is warrior, hunter, fisherman, tool-maker, builder ; every woman performs the same drudgeries ; every family is self- sufficing, and save for purposes of aggression und defence, might as well live apart from Ibc rest. Veiy early, however, iu the pro- cess of social evolution, we find an incipient differentiation between the governing and the governed. Some kind of chieftainship seems coeval with the first advance from the state of separate wandering families to that of a nomadic tribe* The authority of the strongest makes itself felt among a body bi savages as in a herd of animals or a posse of schoolboys. At first, however, it is indefi- nite.uncertain ; is shared by others of scarcely inferior power ; and is unaccompanied by any difference in occupation or style of liv- ing : the first ruler kills his own game, makes his own weapons, builds his own hut. and economically considered, does not differ from others of his tribe. Gradually, as the tribe progresses, the contrast between the govern- ing and the governed grows more decided. Supreme power liecomes hereditary in one family ; the head of that family, ceasing to provide for his own wants, is served by others ; and he begins to assume the sole oHice of ruling. At the same time there has been arising H co-ordinate species of government — that of religion. As all ancient records and tradi- tions prove, the earliest rulers are regarded as divine personages. The maxims and commands they uttered during their lives are held sacred after their deaths, and are en- forced by their divinely-descended succes- sors ; who in their turns are promoted to the pantlienn of the race, there to be wor- shipped and propitiated along with their pred- ecessors : the mo>-t ancient of whom is the supreme god, and the rest subordinate gods. For a long time these connate forms of government— civil and religious — continue closely as.socialed. For many generations the king continues to bethe chief priest, and the priesthood to be members of the royal race. For many ages religious law continues to contain more or less of civil regulation, and civil law topos.sess more or k'ss of relig- ious sanction ; and even among the most ad. vanced nations these two controlling agen- cies are by no means completely differen- tiated from each other. Having a common root with these, and gradually diverging from them, we find yet another controlling agency — that of manners or ceremonial usages. AH titles of honor are originally the names of the god-king ; afterward of God and the king ; still later of persons of high rank ; and finally come, some of them, to be used between man and man. All forms of complimentary ad- dress were at first the expressions of submis- sion from prisoners to their conqueror, or from subjects to their ruler, either human or divine — expressions that were afterward used to propitiate subcniiuate authorities, and slowly descended into ordinary inter- course. All modes of salutation were once -i d in worship of him after his death. Pres- t miy others of the god-descended race were similaily saluted ; and by degrees some of the salutations have become the due of all. Thus, no sooner does the originally homo- geneous social massdifferentiateintothegov- erned and the governing parts, than this last exhibits an incipient differentiation into re- ligious anfl secular — Church and State ; wliile at the same time there begins to be differentiated from both, that Icps definite 283 PROGRESS: ITS LAW AND CAUSE. species of government which rules our daily intercourse — a species of goverrimeiil vviiicli, as we may see in heralds' colieircs, in t)oolarate from hieroglyphics, alphabetic writing itself underwent numerous differen- tiations — nmltiplied alphabets were pro- duced ; between most of which, however, more or less connection can still be traced. And in each civilized nation there has now grownup, for the representation of one set of sounds, several sets of written signs used for distinct purposes. Finally, through a yet more important differentiation came print- ing ; which, uniform in kind as it was at first, has since become multiform. While written language was passing through its earlier stages of development, the mural decoration which formed its root was being differentiated into painting and sculpture. The gods, kings, men, and ani- mals represented were originally marked by indented outlines and colored. In most cases these outlines were of such depth, and the oLijcct they circumscribed so far rounded and marked out in its leading parts, as to form a species of work intermediate between in- taglio and bas-relief. In other cases we see an advance upon this ; the raised spaces between the figures being chiselled off, and the figures themselves appropriately tinted, a painted bas-relief was produced. The re- HO PROGRESS: ITS LAW AND CAUSE. stored Assyrian architecture at Sydenham exhibits this style of art carried to greater perfection— the persons and thini^s repre- sented, though still barbarously colored, aro carved out with more truth and in greater detail : and in the winged lions and bulls used for the angles of galcways, we may see a considerable advance toward a completely sculptured figure ; which, nevertheless, is btill coloreij, and still forms part of the build- ing. But while in Assyria the production of a statue proper seems to have been little, if at all, attempted, we may trace in Egyp- tian art the gradual separation of the sculp- tured figure from the wall. A walkthrough the collection iu the British Museimi will clearly show this ; while it will at the same time afford an opportunity of observing the evident traces which the independent statues bear of their derivation from ba.s-relief : see- ing that nearly all of them not only display that union of the limbs with the l)ody which is the characteristic of bas-relief, but have the back of the statue united from head to foot with a block which stands iti place cf the original wall. Greece repeated the lead- ing stages of this progress. As in Egypt and Assyria, these twin arts were at first united with each other and with their parent, architecture, and were the aids of religion and government. On the friezes of Greek temples we see colored bas-reliefs represent- ing sacrifices, battles, processions, games — all in some sort religious. <)u the pediments we see painted sculptures more or less united with the tympanum, and having for subjects the triumphs of gods or heroes. Even when we come to statues that are definiti^ly sep- arated from the buildings to which they per- tain, we still find them colored ; and only in the later periods of Greek civilization docs the differentiatum of sculpture from painting appear to have become complete. In Christian art we may clearly trace a parallel regenesis. All early paintings and sculptures throughout Europe were religious in subject — represented Christs, crucifixions, virgins, holy families, apostles, sainta. They formed integral parts of church architecture, and were among the means of exciting wor- ship ; as in Roman Catholic countries they still are. Moreover, the early sculptures of Christ on the cross, of virgins, of saints, were colored; and it needs" but to call to mind the painted madonnas and crucifixes still abundant in continental churches and highways, to perceive the significant fact that painting and sculpture continue ia closest connection with each other where thej' continue in closest connection with their parent. Even when Christian sculpture was pretty clearly differentiated from painting it was still religious and governmental in its subjects — was used for tombs in churches and statues of kings : while, at the same time, painting, where not purely ecclesiastical, was applied to the decoration of palaces, and besides representing royal personages, was almost wholly devoted to sacred legends. Only in quite recent times have painting and sculpture become entirely secular arts. Onljr within these few centuries has )>ainlinK been divided into historical, landscape, marine, architectural, genre, animal, still life, etc., and sculpture grown heterogeneous in re- spect ot the variety of real and ideal subjects with which it occupies itself. Strange as it seems, then, we find it no less true, that all forms of written language, of painting, and of sculpture, have a common root in the politico- religious decorations of ancient temples and palaces. Little re.>*em- blance as they now have, the bust that stand* on the console, the landscape that hangs against the wall, and the copy of the Titnes lying upon the table, are remotely akin ; not only in nature, but by extraction. The brazen face of the knocker which the post- man has just lifted, is related not only to the woodcuts of the llluxtrattd London JVcws which he is delivering, but to the characters of the billet-doux which accompanies if. Be- iween the painted window, the prayer-book on which its light falls, and the adjacent m inumcnt there is consangunity. The effi- gies on our coins, the signs over shops, ihe figures that fill every ledger, the coats-of- anns outside the carriage panel, and the pla- cards inside the omnil)us, are, in common with dolls, blue-books, paper-hangings, line- ally descended from tlie rude sculpture-paint- ings in which the Egyptians represented the triumphs and worship of their god-kings. Perhaps no example can be given which more vividly illustrates the multiplicity and heterogeneity of the products that in course of time may arise b}' 6uc(;essive differentia- lions from a common stock. Before passing to other classes of facts, it should be observed that the evolution of the homogeneous into the heterogeneous is dis- played not only in the separation of paiuting^ and sctilpture from architecture and from each other, and in the greater variety of sub- jects they embody, but it is further shown in the structure of each work. A modern pic- ture or statue is of far more heterogeneous nature than an ancient one. An Egyptian sculpture-fresco represents all its figures as on one plane — that is, at the same distance from the ej'e ; and so is less heterogeneous than a painting that represents them as at various distances from the eye. It exhibits all objecta as exposed to the same degree of light ; and so is less heterogeneous than a painting which exhibits different objects and different parts of each object as in dificrt'ut degrees of light. It uses scarcely any but the primary colors, and these in their full intensity ; and so is less- heterogeneous than a painting which, intro- ducing the primary colors but sparingly, ernploj's an endless variety of intei mediate tints, each of heterogeneous composition, and differing from the rest not only in quality but in intensity. Moreover, we see in these earliest works a great uniformity of concep- tion. The same arrangement of figures is perpetually reproduced — the same actions, attitudes, faces, dresses. In Egypt the modes of rppreser.tation were so fixed that it PROGRESS: ITS LAW AND CAUSE. 341 ■was sacrilege to introduce a novelty ; and indeed it could liave been only in conse- quence of a tixcd mode of representation thai a syslcm of hieroglyphics became possi- ble. The Assyrian l);itj-reliefs display paial- li'l chiiracter.s. Deities, kings, attendants, winded figures and animals, are severally depicted in like pnsilions, hnldmg like ini- plcuiLUls, doing like things, and with like ex- press-ion or uun-expres^sijn of face. If u palm-grove is introduce;!, all the trees are of the same height, have the same number of leaves, and are equidistant. When water is imitated, each wave is a counterpart of the re.-t ; and the li.sh, almost always of one kind, arc evenly distributed over the surface. The boards of the kings, the gods, and the ■winged figures, are everywhere similar : as are the manes of the lions, and equally so those of the horses. Hair is re[)iesented throughout by one form of curl. The king's beard is quite arcliitecturally built up of compound tiers of uniform cui Is, alternating with twisted tiers i)luci(l in a transverse direction, audarianged with perfect regular- ity ; and the terminal tufts of the bulls' tails are represented in exactly the same nuiuner. Without tracing out analogous facts in early Christian art, in which, though less striking, they are still visible, the advance in hetero- geneity will be sufticicutly manifest on re- nundieriug that in the pictures of our own day the composition is endlessly varied ; thu attitudes, faces, expressions utdike ; the sub- ordinate objects different in size, form, posi- tion, texture ; and more or less of coulrust even in the smallest details. Or, if we com- pare an Egyptian statue, seated bolt upright on a block, with hands on knees, fingers out- spread and parallel, eyes looking etraight forward, and the two sides perfectly sjTn- metrical in every particular, with a statue of the advanced Greek or the modern school, which is as symmetrical in respect of the position of the head, the body, the limbs, the arrangement of the hair, dress, appendages, and in its relations to neishboring objects, we shall see Iho change fronj the homogene- ous to the heterogeneous clearly manifested. In the co-ordinate origin and gradual dif- ferentiation of poetry, music, and dancing, we have another series of illustrations. Rhythm in speech, rhythm in sound, ami rhythm in motion, were in the beginning parts of the same thing, and have only in process of time become separate things. Among various existing barbarous trilK'S we find them still united. The dances of sav- ages are accompanied by some kind of mo- notonous chant, the clapping of hands, the striking of rude instruments : there ate meas- ured movements, measured words, and meas- ured tones ; and the whole ceremony, usually' having reference to war or sacrifice, is of goveiumenlal character. In the early rec- ords of the historic races we similarly find these three forms ot metrical action united in religious festivals. In the Hebrew writings we read that the triumphal ode composed by Moses on the defeat of the Egyptians was sung to an accompaniment of dancing and timbrels. The Israelites danced and sung " at the inauguration of the golden calf. Artd an it is generally agreed that this repre- sentation of the Deity was boriowed fioni the mysteries of Apis, it is probable that the dancing was copied frornthat of the Egyptian* on those occasions." There was «n annual dance in Shiloh on the sacred festival ; and Dosvid danced before the ark. Again, iu Greece the like relation is everywhere seen : the original type being there, as probably ia other cases, a simultaneous chanting and mimetic representation of the life and adven- tures of the god. The Spartan dances were accompanied by hymns and songs ; and iu general the Greeks had " no festivals or rtlig- i.)us a.ssemblies but what were accompanied with songs and dances" — both of them being forms of wor.ehip used before altars. Among the Romans, loo, there were sacred dances : the Salian and Lupercalian being named as of that kind. And even in Chris- tian countries, as at Limoges, in compara- tively recent times, the people have danced in the choir in honor of a saint. The incipi- ent separation of these once united arts from each other and from religion, was early vis- ible in Greece. Probably diverging from dances partly religious, parti}' warlike, as the Corybantian, came the war dances proper, of which there were various kinds ; and from these resulted secular dunces. Meanwhile music and poetry, though still united. cam(i to have an existence separate fri m dancing. The aboriginal Greek poems, religious iu subject, were not recited, but chanted ; and tli(,ugh at first the chant of the poet was accomi)anied by the dance of the chorus, it ultimately grew into independence. Later still, when the poem had been differ- entiated into epic and lyric — when it became the custom to sing thu lyric and recite the e|.ic— poetry proper was bom. As during the same period musical instmuRnts were being inultqilied, we may presume that music came to have an existence apart from words. And both of them were beginning to a.ssume other forms besides the religious. Facts having like implications might be cited from the histories of later times and peoples ; as the practices of our own early n instrels, who sang to the harp heroic narratives versified by them>elves to music of their own compo- sition ; thus uniting the now separate offices of poet, compo.ser, vocalist, and instrumen- talist. But, without further illustration, thu common origin and gradual differentiation of dancing, poetry, and music will be suffi- ciently manifest. The advance from the homogeneous to the heterogeneous is displayed not only in the separation of these arts from each other and from religion, but also in the multiplied differentiations which each of them after- ward undergoes, Not to dwell upon the numberless kinds of dancing that have, in 242 PROGRESS: ITS LAW AND CAUSE. course of time, come into use ; and not to occupy space in detailing the progress of poetry, as seen in the development of the various forms of metre, of rhyme, and of general orguuizutiou, let us confine our at- tention to music as a type of the group. As argued hy Dr. liurney, and as implied by the customs of still extant barbarous races, the first nuisical instruments were, without doubt, percussive — sticks, calabashes, tom- toms— and were used simply to mark the time of the dance ; and in this consluut rep- etition of the same sound we see music in its most homogeneous form. Tlie Egyptians had a lyre with three strings. The eaiiy lyre of the Greeks had four, constituting their tetrachord. lu course of some centuries lyres of seven and eight strings were employed. And, by the expiration of a thousand years, they had ad- vanced to their " great system" uf the double octave. Through all which changes there of course arose a greater heterogeneity of mel- ody. Simiitaneously then; came into use the different modes — Dorian, Ionian, Phrygian, ^olian, and Lydian — answering to our keys ; and of these were there ultimately fifteen. As yet, however, there was but little hetero- geneity in the time of their music. Instrumental music during this period being merely the accompaniment of vocal music, and vocal music being completely subordinated to woids, the singer being also the poet, chanting his own compositions and making the lengths of his notes agree with the feet of his verses, there luiavoidably arose a tiresome uniformity of measure, which, as Dr. Jiurue}' says, " no resources of melotly could disguise." Lacking the complex rhythm obtained by our etjual bars and unequal notes, the only rhythm was that produced by the (piautity of the syllables, and was of necessity comparatively monoto- nous. And further, it may be observed that the chant thus resulting, being like recita- tive, was much less clearly dififerentiated from ordinary speech than is our modern song. Nevertheless, m virtue of the extended range of notes in use, the variety of modes, the occasional variations of time consequent on changes of metre, and the mulliplicatioa of instruments, music had, toward the close of Greek civilization, attained to consider- able heterogeneity — not indeed as compared with our music, but as compared with that which preceded it. As yet, however, there existed nothing but melody ; harmony was unknown. It was not until Christian church- music iiad reached some development that music in parts was evolved ; and then it came into existence through a very unob- trusive differentiation. Difiicult as it may be to conceive d prioriho'W the advance from melody to harnn)uy could take place without a sudden leap, it is uone the less true that it did so. The circumstance which prepared the way for it was the employment of two choirs singing alternately the same air. Afterward it became the practice — very pos- sibly first suggested by a mistake — for the second choir to commence before the first had ceased ; thus producing a fugue. With the simple airs then in u.se, a par- tially harmonious fugue might not improb- ably thus result : and a very partially har- monious fugue satisfied the ears of that age, as we know from still preserved examples. The idea having once been given, the com- posing of airs productive of fugal harmony would naturally grow up ; as in some way it did grow up out of this alternate choir- singing. And from the fugue to concerted music of two, three, four, and more parts, the transition was easy. Without pointing out in detail the increasing complexity that resulted from from introducing uotes of vari- ous lengths, from the multiplication of keys, from the use of accidentals, from varieties of time, and so forth, it needs but to contrast music as it is witii music as it was, to see how immense is the increase of heterogene- ity. We see this if, looking at music in its eimemble, we enumerate its many different genera and species — if we consider the divi- sions into vocal, instrumental, and mixed ; and their subdivisions into music for differ- ent voices and different instruments— if we observe the many forms of sacred music, from the simple hymn, the chant, the canon, motet, anthem, etc. up to the oratorio ; and the still more numerous forms of secular music, from the ballad up to the serenata, from the instrumental solo up to the sym- phony. Again, the .'lame truth is seen on compar- ing any one sample of aboriginal music with a sample of modern music — even an ordinary song for the piano ; wliich we find to be relatively highly heterogeneous, not only in respect of the varieties in the pitch and in the length of the notes, the number of differ- ent notes sounding at the same instant in company with the voice, and the variations of strength with which they are sounded and sung, but in respect of the changes of key, the changes of time, the changes of timbre of the voice, and the many other modifications of expression. While between the old mo- notonous dance-chant and a grand opera of our own day, with its endless orchestral complexities and vocal combinations, the contrast in heterogeneity is so extrenle that it seems scarcely credible that the one should have been the ancestor of the other. Were they needed, many further illustra- tions might be cited. Going back to the early time when the deeds of the god-king, chanted and mimetically represented in dances round his altar, were fuither narrated in picture-writings on the walls of temples and palaces, and so constituted a rude litera- ture, we might trace the development of lit- erature through phases in which, as in the Hebrew Scriptures, it presents in one work theology, cosmogony, history, biography, civil law, ethics, poetry ; through other phases in which as in the Iliad, the religious, martial, historical, the epic, dramatic, and lyric elements are similarly commingled ; PROGRESS: ITS LAW AND CAUSE. di3 down to its present heterogeneous develop- ment, in which its divisions and subdivisions are so numerous and varied as to defy com- plete classification. Or -we might trace out the evolution of science ; beginning with the era in which it was not yet differentiated from art, and was, in union with art, the handmaid of religion ; passing through the era in which the sciences were so few and rudimentary as to be simultaneously culti- vated by the same philosophers ; and ending with the era in which the genera and species are so numerous that few can enumerate them, and no one can adequately grasp even one genus. Or we might do tlie like with architecture, with the drama, with dress. But doubtless the reader is already weary of illustrations ; and our promi.se has been amply fulfilled. We believe we have .shown beyond question, that that which the German physiologi.sts have found to be the law cf organic development is the law of all devel- opment. The advance from the simple to the complex, through a process of successive differentiations, is seen alike in the earliest changes of the universe to which we can reason our way back ; and in the earliest changes which we can inductively establish ; it is seen in the geologic and climatic evolu- tion of the earth, and of every single organ- ism on its surfa<-e ; it is seen in the evolution of humanity, whether contemplated in the civilized individual or in the aggregation of races ; it is seen in the evolution of society in respect alike of its political, its religious, and its economical organization ; and it is seen in the evolution of all those endless con- crete and abstract products of human activ- ity which constitute the environment of our daily life. From the remotest past which science can fathom, up to the novelties of yesterday, that in which progress essentially consists, IS the trauHformuliou of th»» homo- geneous into the heterogeneous. And now, from this uniformity of proced- ure, may we not infer some fundamental necessity whence it results? May we not rationaliy seek for some all j)ervading prin- ciple which determines this all-pervading process of things? Does not the universality of the law imply a universal cause f That we can fathom such cau.ce, noume- nally considered, is not to be supposed. To do this would be to solve that ultimate mys- tery which must ever transcend human intel ligence. But it still may be possible for us to reduce the law of all progress, above estab- lished, from the condition of an empirical generalization, to the condition of a rational generalization. Just as it was possible to interpret Kepler's laws as necessary conse- quences of the law of gravitation ; so it may be possible to interpiet this law of prcgiess, in its multitorm manifestations, as the neces- sary consequence of some similarly universal principle. As gravitation was assignable as the caused each of the groups of jihenununa which Kepler formulated ; so may seme equally simple attribute of things be assign- able as the cause of each of the groups of phenomena formulated in the foregoing pages. We maj' be able to affiliate all these varied and complex evolutions of the homo- geneous into the heterogeneous, upon certain simple factsof immediate experience, which, in virtue of endless repetition, we regard as necessary. The probability of a common cause, and the possibility of formulating it, being granted, it will be well, before going farther, to consider what must be the general char- acteristics of such cause, and in what direc- tion we ought to look for it. We can with certainty predict that it has a high degree of generality ; seeing that it is common to such infinitely varied phenomena : just in propor- tion to the universality of its application must be the abstractncss of its character. We need not expect to see in it an obvious solution of this or that form of progress ; because it equally refers to forms of progress bearing little api)arent resemblance to them : its association with multiform orders of facts involves its disso( iation frcm any particular order of facts. Being that which dclermines progress of every kind — aslroncmic, geo- logic, organic, ethnologic, social, economic, artistic, etc. — it must be concerned with some fundamental attribute possessed in common by these ; and must be expressible in terms of this fundamental attribute. The only obvious nspect in which all kinds of pi ogress are alike, is, that they arc modes of clutnge ; and hence, in some characteristic of changes in general, the des-ired solution will l)iobably be found. We may suspect d priori that in some law of change lies the ex- planation of this universal transformation of the homogeneous into the heterogeneous. Thus much premised, we pass at once to the statement of the law, which is this : Evei-y actite force produce smore than one change — every cause produces more than one effect. Before this law can be duly comprehended, a few examples must be looked at. When one body is struck against another, that which we usually regard as the effect is a change of position or motion in one or both bodies. But a moment's thought shows us that this is a careless and very incomplete view of the matter. Besides the visible mechanical result, sound is produced ; or, to speak accurately, a vibration in one or both bodies, and in the surrounding air ; and under some circumstances we call this the effect. Moreover, the air has not only been made to vibrate, but has had sundry currents caused in it by the transit of the bodies. Further, there is a disarrangement of the par- ticles of the two bodies in the neighborhood of their point of collision, amounting in some cases to a visible condensation. Yet more, this condensation is accompanied by the disengagement of heat. In some cases a spur's — that is, light— results, from the in- candescence of a portion struck off ; and sometimes this incandescence is associated with chemical combination. Thus, by the ori;jinal mechanical force ex- 214 rnOGRESS: ITS LAW AND CAUSE. pended in the collision, at least five, and often more, different kinds of chanircs have been produced. Take, ag:iin, the lighting of a caudle. Primarily this is a chemical change consequent on a lise of temperature. The process ot combination having once been set going by extraneous heat, tliere is a con- tinued formation of carb(>nic acid, water, etc. — in itself a result more coniplex than the ex- traneous heat that tirst caused it. But ac- compiiuyiug this process of combination there is a production of heat ; thete is a pro duclion of light ; there is an ascending col- umn of hot gases generated ; there are cur- rents estai)lished in the surrounding air. Moreover, the decomposition of one force into many forces does not end here : each of the several changes produced bectimes the parent of further changes. The carbonic ncid given off wdl by and by combine willi sume base ; or under the influence of sunshine give up its carbon to the leaf of a plant. The water will modify the hygromctric state of the air around ; or, if the current of hot gases con- taining it come against n cold body, will bo condensed : altering the temperature, and perhaps the chemical state, of the surface it covers. The heat given out melts tiie sub- jacent tallow, an h.ive been resolved into clusters of stars is almost beneath notice. }i. i>riori it was highly im- probable, if not impos'^ible, ihat nebulous mass^es should t^till remain unconden.sed, while others have beiu condensed millions of years ago. Without committing ourselves tr) it as more than a speculation, though a highly I)robableone, let us again conunence wiih the evolution of the solar system out of a nebu- lous medium. f From the mutual attraction of the atoms of a diffused mass whose form is unsymmetrical, there results net only con densation but rotation : gravitation einml- taneously generates both the centriiietal and the centrifugal forces. While the cimdensa- tion and the rate of rotation are progressively increasing, the approach of the atoms neces- sarily generates a progressively increasing temperature. As this temperature rises, light begins to be evolved ; and ultimately there restdts a revolving sphere of lluid matter radiating inten.se heat and light — a sun. There are goolribulion of heat, and so forth. But not to dwell upon these, let us, for the fuller elucidation of this truth in relation to the inorganic world, consider what would be the consequences of some extensive cosmical revolution — say the subsidence of Central America. The immediate results of the disturbance would themselves be suflicienlly complex. Besides tlie numberless dislocations of strata, the ejections of igneous matter, the propaga- tion of earthquake vibrations thousands of miles around, the loud explosions, and the escape of gases, there would be the rush of 246 PROGRESS: ITS LAW AND CAUSE. the Atlantic aud Pacific Oceans to supply the vacant space, the sa'jsequent recoil of enormous waves, wliicli would traverse both these oceans and i)r()diice myriads of rhangts along their siiores, the corrt'spnndin!^ atmos- pheric waves complicated by tiie currents sur- rounding eacli volcanic vent, and the electrical discharges with wiiich such disturbances are accompanied. But these temporary effects ■would be insignificant compared with the per- manent ones. The complex currents of the Atlantic and Pacific would be altered in di- rection and amount. The distribution of lieat achieved by these ocean currents would be different from wiiat it is. The arrange- ment of the i-sothermal lines, not even on the neighboring continents, but even throughout Europe, would be changed. The tidt-s would liow differently from wiiat they do now. There would be more or less modificalion of the winds in their periods, strengths, direc- tions, qualities. Rain would fall scarcely anywhere at the same times and in the same quantities as at present, in short, the me- teorological conditions thousands of miles off, on all sides, would be more or less revo- lutionized. Thus, without taking into account the infinitude of modifications which these changes of climate would produce upon the flora and fauna, bolli of land and sea, the reader will see the immense heterogeneity of the results wrought out by one force, when that force expends itself upon a previously complicated area ; and he will readily draw the corollary that from the beginning the com- plication has advanced at an increasing rate. Before going on to show howoriranic prog- ress also depends ui)on the universal law that every force produces more tlian one change, we have to notice the manifestation of this law in yet another species of inor- ganic progress — namely, chemical. The same general causes that have wrought out the heterogeneity of the earth, physically considered, have simultaneouslv wrought out its chemical heterogeneity. Without dwell- ing upon the general fact that the forces "Which have been increasing the variety and complexity of geological formations, have. at the same time, been i)ringing into contact elements not previously exposed to each other under conditions favorable to union, and so have been adding to the number of chemical compounds, let us pass to the more important complications that have resulted from the cooling of the earth. There is every reason to believe that at an extreme heat the elements cannot combine. Even under such heat as can be artificially produced, some very strong affinities yield, as for instance, that of oxygen for hydro- gen ; and the great majority of chemical compounds are decomposed at much lower temperatures. But without insisting upon the higldy probable inference, that when the earth was in its first state of incandescence there were no chemical combinations at all, it will suffice our purpose to point to the un (iuestionable fact that the compounds that car exist at the highest temperatures, and whictj must, therefore, have been the first that were formed as the earth cooled, are tho.se of the simplest constitutions. The protoxides — in- cUuling under that head the alkalies, earths, etc. — arc. as a class, the most slabl«> com- pountls we know : most of them resisting de- composition by any heat we can generate. The.se, consisting severally of one atom of each component element, are combinations of the simplest order — are but one degree less honiog( iicous than the elements themselves. iVIorc iH'tvd)stancc whose atoms sev- erally contain at least four ultimate atoms of three different kinds. Yet more hetero- geneous and less .stable still are the salts ; which piescnt us willi compound atoms each made up of five, six, seven, eight, ten, twelve, or more atoms, of three, if not more kinds. Then there are the hydrated salts, of a yet greater heterogeneity, which undergo partial decomposition at much lower temperatures. After them come the further complicjited supersalts and double salts, having a stability again decreased ; and so throughout. With- out entering into (pialifications for which we lack space, we believe no chemist will deny it to be a general law of these inorganic combinations that, other things eqiiai, the stability decreases as the complexity in- cre!i.-es. And then when we pass to the compounds of (Jiganu- chenii.slry.we find this general law still further exemplified : we find much greater complexity and much less stability. An atom of albumen, for instance, consists of •l.'S^ ultimate atoms of five different kinds. Fibrine, still more intricate in constitution, contains in each atom, 2!»8 atoms of carbon, 40 of nitrogen, 3 of sul()hur, )12S of hydro- gen, and 92 of oxygen — in all, (5G0 atoms ; or, more strictly speaking — equivalents. And these two substances are so unstable as to decompose at quite ordinary temperatures : as that to which the outside of a joint of roast meat is exposed. Thus it is manifest that the present chemical heterogeneity of the earth's surface has arisen by degrees, as the decrease of heat has permitted ; and that it has shown itself in three forms — first, in the. multiplication of chemical compounds ; sec- end, in the greater number of different ele- ments contained in the more modern of these compoimds ; and third, in the higher and more varied multiples in which these more numerous elements combine. To say that this advance in chemical hete- rogeneity is due to the one cause, diminution of the earth's temperature, would be to say too much ; for it is clear that aqueous and at- mospheric agencies have been concerned ; and, further, that the aflflnities of the ele- PROGRESS: ITS LAW AND CAUSE. 247 ments themselves are implied. The cause has all aluug been a composite one : the cooling of the earth having been simplj' the most general of the concurrent causes, or assem- blage of conditions. And here, indeed, it may be remarked that in the several classes of facts already dealt with (excepting, per- haps, the first) and still more in those with which we siiall presently deal, the causes are more or less compound ; as indeed are nearly all causes with which we are ac- quainted. Scarcely any change can with logical accuracy be wholly ascribed to one agency, to the neglect of the permanent or temporary conditions under which onl}" this agency produces the change. But as it does not materially affect our argument, we pre- fer for simplicity's sake, to use throughout the ])opuIar mode of expression. Perhaps it will be further objected, that to assign loss ot heat as the cause of any changes, is to attribute these changes not to a force, but to the absence of a force. And this is true. Strictly speaking, the changes should be attributed to those forces which come into action when the antagonist force is withdrawn. But though there is an inac- curacy in saying that the Ueer.wj of water is due to the loss of its heat, i; > \ rticticul error arises from it ; nor will a p;u;dlel laxity of expression vitiate our blalemeuls rcspet I- ing the muUiplicat inn of effects. Indeed. Ihc objection serves but to dnxw attcnti.-in to the- fact, that not only does the exertion of a force produce more than one change, but the withdrawal of a force produces more than one change. And this suggests that pcrhajts the most correct statement of our general principle would be its most abstract state- ment—every change is followed by more than one other change. Returning to the thread of our exposition, we have next to trace out, in organic I)rogress. this same all-pervading principle. And here, where the evolution of llic homo- geneous into the heterogeneous was first ob- served, the production of many changes by one cause is least easy to demonstrate. The development of a seed into a plant, or an ovum into an animal, is so gradual, while the forces wliich determine it are so involved, and at the same time so unobtrusive, that it is dithcult to detect the multiplication of effects which is elsewhere so obvious. Never- theless, guided by indirect evidence, we may pretty safely reach the conclusion that here too the law holds. Observe, first, how numerous are the effects which any marked change wniks upon an adult organism — a human being, for in- stance. An alarming sound or sight, besides the inipres.'^ions on the organs of sense and the nerves, may produce a start, a scream, a distortion of Ibe face, a trembling conse- quent upon a gtui-ral muscular relaxation, a burst of perspiration, an excited action of the heart, a rush of blood to the brain, fol- lowed possibly by arrest of the heart's action and by syncope : and if the system be feeble, an indisposition with its l<,ng train of com- phcated symptoms may set in. Similarly in cases of disease. A minute portion of the small-pox virus introduced into the system will, in a severe case, cause, during the first stage, rigors, heat of skin, accelerated pulse, furred tongue, loes of appetite, thirst, epi- gastric uneasiness, vomiting, headache, pains in the back and limbs, muscular weakness, convulsions, delirium, etc. ; in the second stage, cutaneous eruption, itching, tingling, sore throat, swelled fauces, salivation, cough, hoarseness, dyspnaa, etc., and in the third stage, oedematous inflanmiations, pneumonia, pleurisy, diarrhcca, inflammation of the brain, ophthalmia, erysipelas, etc. ; each of which enumerated symptoms is itself more or less complex. >Iedicines, special foods, better air, might in like manner be instanced as producing'multiplied results. Now it needs only to consider that the many changes thus wrought by one force upon an adult organism, will be in part par- alleled in an embryo organism, to understand how here also, the evolution of the homo- geneous into the heterogeneous may be duo to the production of many effects by one cause. The external heat and other agencies wliich determine the first complications of the germ, may, by acting upon these, super- induce further complications ; upon these still higher and more numerous ones ; and so on continually : each organ as it is developed serving, b}' its actins and rractinns ur)r,n the rt-st. to initiate new complexities. The first pulsations of the fa?tal heart must simul- taneously aid the unfolding of every jiart. The growth of each tissue, by taking from the blood special proportions of elements, must modify the constitution of the blood ; and .so must modify the nutrition of all the other ti.si.ues. The heart's action, implying as it does a certain waste, necessitates an addi- tion to the blood of effete matteis, which nnist influence the rest of the system, and l)erhaps, as some think, cause the formation of excretory organs. The nervous connec- tions established among the viscera must further multiply their mutual influences : and so continually. Still stronger becomes the probability of this view when we call to mind the fact, that the same germ may be evolved into different forms according to circumstances. Thus, during its earlier stages, every embryo is .sexless — becomes either male or female as the balance of forces acting upon it deter- mines. Again, it is a well-established fact that the larva of a working bee will develop into a queen -bee, if, before it is toj late, its food be changed to that on which the larvte of queen-bees are fed. Even more rema.^k- able is the case of certain entozoa. The ovum of a tapeworm, getting into its natural habitat, tlie intestine, unfolds into the wt;il- kmwn form of its parent ; but if carried, as it frequently is, into oth-jr parts of tho sys- tem, it becom(;s a sac-like cieature, called by naturalists the EMn/fOceus—iicrciinna bj ex- tremely different from the tape-worm m as- pect and structure that only after caieful 348 PROGRESS: ITS LA.W AND CAUSE. inrestigations has it been proved to have the samrj origin. All wliich instances imply that «ach advance in eml)ryonic complication re- sults from the action of incident forces upon the complication previously existing. Indeed, we may Had d priori rea.son to think that the evolution proceeds after this mauuer. For since it is now known that no germ, animal or vegetable, contains the slightest rudiment, trace, or indication of the future organism — now that the microscope has sliown us that the fust process set up in every fertilized germ is a process of re- peated spontaneous tissions, ending in the production of a mass of cells, not one of which exhibits any special character : (here seems no alternative but to suppose that the partial organization at any moment Bui)sist- ing in a growing embryo, is transformed by the agencies acting upon it into the succeed- ing phase of organization, and this info the next, until, through ever increasing com- plexities, the ultimate form is reached. Thus, though the subtilty of the forces and the slowness of the results prevent us from directly showing that the stages of increii.s- ing heterogeneity through which every em- bryo passes, severally arise from the produc- tion ot many changes l)y one force, yet. in- directly, we have strong evidence that they do so. We have marked how multitudinous are the effects which one cause may generate in an adult organism ; that a like multiplication of effects must happen in the unfolding organ- ism we have ol)served in sundry illustrative cases ; further, it has been pointed out that the ability which like germs have to origi- nate unlike forms, implies that thesuccessit^e transformations result from the new changes superinduced on previous changes ; and we have seen that structureless as every germ originally is, the development of an organ- ism out of it is otherwise incomprehensible. Not indeed, that we can thus really explain the production of any plant or animal. We are still in the dark respecting those myste- rious properties in virtue of which the germ, when subject to fit intluonces, undergoes the special changes that begin the series of trans- formations. All we aim to show is that, given a germ possessing these mysterious properties, the evolution of an organism from it probably depends upon that multi- plication of effects which we have seen to be the cause of progress in general, so far as we have yet traced it. When, leaving the development of single plants and animals, we pass to that of the earth's flora and fauna, the course of our argument again becomes clear and simple. Though, as was admitted in the first part of this article, the fragmentary facts palaeon- tology has accumulated, do not clearly war- rant us in saying that, in the lapse of geo- logic time, there have been evolved more heterogeneous organisms, and more hetero- geneous assemblages of organisms, yel we shall now see that there must ever have been a tendency toward these results. We shall find that the production of many effects by one cause, which, as already shown, has been all along increasing the physical hetero- geneity ot the earth, has further involved an increasing heterogeneity in its flora and fauna, individually and collectively. An il- lustration will make this clear. Suppose that by a series of upheavals, oc- curring, as they are now known to do, al lung intervals, the East Indian Archipelago were to be, step by step, raised into a continent, and a chain of mountains formed along the axis of elevation. By the first of these up- heavals, the plants and animals inhabiting Borneo. Sumatra, New tf uinea, and the rest, would be subjected to slightly modified sets of conditions. The climate in general w^ould be altered in temperature, in humidity, and in its periodical variations ; while the local differences would be multiplied. These modifications •would affect, perhaps inappre- ciably, the entire flora and fauna of the re- gion. The change of level would produce additional modifications : varying in differ- ent species, and also in different members of the same species, according to their distance from the axis of elevation. Plants, growing only on the sea-shore in special localities, might become extinct. Others, living only in swamps of a certain humidity, would, if they survived at all, probably undergo visi- ble changes of appearance. While still great- er alterations would occur in the jilants grad- ually spreading over the lands newly raised above the sea. The animals and insects liv- ing on these modified plants, would them- selves be in some degree nioditied by change of food, as well as by change of climate ; and the modification would be more marked where, from the dwindling or disappearance of one kind of plant, an allied kind was eaten. In the lapse of the many generations arising before the next upheaval, the sensible or insensible alterations thus produced in each species would become organized — there ■would be a more or less complete adaptation to the new conditions. The next upheaval would superinduce further organic changes, implying wider divergences from the primary forms, and so repeatedly. But now let it be observed that the revolu- tion thus resulting would not be a substitu- tion of a thousand more or less modified species for the thousand original species ; but in place of the thousand original species there would arise several thousand species, or varieties, or chauged forms. Each species being distributed over an area of some extent, and tending continually to colonize the new area exposed, its difierent members would be subject to different sets of changes. Plants and animals spreading toward the equator would not be affected in the same way with others spreading from it. Those spreading toward the new shores would undergo changes unlike the changes undergone by those spreading into the mountains. Thus, each original race of organisms would become the root from which diverged several races differing more or less from it and from each PROGRESS: ITS LAW AND CAUSE. d49 other ; and while some of these might snljse- ((iieully disappear, probably more than cue would survive in the next geologic period : the very dispersion itself increasing the chances of survival. Not only would there Le certain modifications thus caused l)y change of physical conditions and food, but also in some cases other modifications caused by change of habit. The fauna of each inland, peopling, step by step, the newly- raised tracts, would eventually come in con- tact witli the faunas of oilier islands ; and some members of these other faunas would be unlike any creatures before seen. Her- bivores meeting with new beasts of prey, would, in some cases, be led into modes of defence or escape differing from those pre- viously Used ; and simultaneouHly the beasts of prey would modify their modes of pursuit and attack. "We know that when circum- stances demand it, such changes of habit ilo take place in animals ; and we know that if the new l#bits become the dominant ones, they mustXventuallj' in some degree alter the organization. Observe, now, however, a further crnsc- queuce. There must arise not simply a tend- ency toward tlie dillcicnliation of each lace of orgaui.sms into several races ; but also a tendency to the occasitmal picduction uf a somewhat higher organism. Taken in the mass these divergent varieties which have been caused by fresh physical cnndilions and liabits of life will exhibit changes quite in- definite in kind and degree ; and clianges that do not necessarily ccnstiiute an advance. I'robably in most cases the modified type will be neither more nor less heteiogeneous than t4ie oiiginal one. In some cases the habits of life adopted being simpler than lieforc, a fcss helerogenecus structure will n suit : there will be a retrogradation. But it mvst now and then occur, that .'•onie division of a tpecies, falling into circunistjinces which give it ralhermore complex cxptritnces, and demand actions tfrnewliat more involved, will have certain of its organs furtlicr differ- entiated in iiroportionately small degrees — will become siightl}' moie heterogeneous. Thus, in the natuiai course of things, there will from time to lime arise an increased heterogeneity both of the earth's flora and fauna, and of individual races included, in tliem. Omitting detailed explanations, and allowing lor the qualifications which cannot here be specified, we tliiuk it is clear that geological mutations have all along tended to «omplicate the forms of life, wluther re- garded sepaiately or collectively. The same causes which have ltd to the evolution of the earth's ciust from the simple into the com- ])iex, have simultaneously led to a parallel evolution of the life upon its surface. In this case, as injjrevious ones, we see that the transformation of the homogeneous into the heterogeneous is consequent upon the uni- versal principle, that every active force pro- duces more than one change. The deduction here drawn from the estab- lished truths of geology and the general laws of life, gains immensely in weight on finding it to be in harmony with an induction drawn from direct cxpctience. Just that diver- gence of many races frc^m one race. Which we inferred must have been continually oc- curring duiing geologic time, we know to have occurred during the prehistoric and historic periods, in man and domestic ani- mals. And just that multiplication of effects which we concluded must hav(? produced the first, we see has produced the las*. Single causes, as famine, pressure of population, war, have periodically led to further disper- sions of mankind and of dependent creat- ures : each such dispersion initiating new modifications, new varieties of type. \V lielher ail the human races be or be not derived from one stock, philology makes it clear that whole groups of races now easily distinguish- able from each other were originally one race — that the diffusion of one race into differ- ent climates and conditions of existence has produced many modified forms of it. Similarly with domestic animals. Though in some cases — as that of dogs — comnninity of origin will perhaps be disputed, yet iu other cases — as that of the sheep or the cattle of our own country — it will not be (pies- tioned that local differences of climate, food, and treatment, have transfurnied one original breed into numerous breeds now become so far distinct as to produce unstable hybrids. ^Moreover, through the complications of effects flowing from single causes, we here find, what we before iniferred, not only an increase of general heterogeneity, but also of .special heterogeneity. AVhile of the divergent divisions and subdivisions of the human race, many have undergone changes not constitu- ting an advance ; while in some the type may have degraded ; in others it has become de- cidedly more heterogeneous. The civilized Euroi)ean departs more widely from the ver- tebrate archetype than does the savage. Thus, both the law and the cause of prog- ress, which, from lack of evidence, can be but hypothetically substantiated in respect of the earlier forms of life ou our globe, cau be actually substantiated in respect of the latest forms. If the advance of man toward greater heterogeneity is traceable to the production of many cllecls by one cause, still more clearly may the advance of society toward greater heterogeneity be so explained. Con- sider the growth of an industrial organiza- tion. Wnen, as must occasionally happen, some individual of a tribe displays unusu- al aptitude for making an article of gen- eral use — a weapon, for instance — which was before made by each man for himself, there arises a tendency toward the differentiation of that individual into a maker of such weapon. His companions — warriors and hunters all of them— severally feel the importance of having the best weapons that can be made ; and are therefore certain to offer strong inducements to this skilled individual to make weapons for them. He, on the other hand, having not only an unusual faculty, but an unusual 250 PROGRESS: ITS LAW AND CAUSE. liking, for malcing sucli weapons (the talent and the desire for any occupatiou being com- monly iis-jociated), is predisposed to fulfil these commissions on the oilorof an adeqiiutj reward : especially as his love of distinction is also gratilied. This first specialization of funcliou, on<;e commenced, tends ever to be- come more decitlcd. On the side of the wea- pon-maker continued practice gives increased skill — increased superiority to his products : on the side of his clients, cessation of practice entails decreased skill. Thus the influences that determine this division of labor grow stronger in both ways ; and the incipient heterogeneity is, on the average of cases, likely to become permanent for that genera- tion, if no longer. Observe now, however, that this process not only dilferentiates the social mass int.) two parts, the one monopolizing, or almost monopolizing, the performance of a certain function, and the other having lost the habit, and in some measure the power, of perform- ing that function ; but it tends to imitate other differentiations. The advance we have described implies the introducti m of barter — tlie maker of weapons has, on each occa- sion, to be paid in such other articles as he agrees to taki; in e.^change. But he will not habitually take in e.vchangj one kind of article, but many kinds. He does not want mats only, or skins, or Ashing gear, but ho wants all these ; and on each occixsion will bargain for the particular things he most needs. What follows? If among the mem- bars of the tribe there exist any sliglit differences of skill in the manufacture of these various things, as there are almost sura to do, the weapon-maker will take from each one the thing which that one excels in mak- ing : he will exchange for mats with him whose mats are superior, and will bargain for the fishing gear of whoever has the best. But he who has bartered away his mats or his fishing gear must make other mats or fishing gear for himself ; and in so doing must, in some degree, further develop his" aptitude. Thus it results that the small specialities of faculty possessed by various members of the tribe will tend to grow more decided. If such transactions are from time to time repeated, tliese specializations may become appre- ciable. And whether or not there ensue dis- tinct differentiations of other individuals into makers of particular articles, it is clear tliat incipient differentiations take place through- out the tribe : the one origmal cause produces not only the first dual effect, but a numl)er of secondary dual effects, like in kind, but minor in degree. Tliis process, of which traces may be seen among groups of school- boys, cannot well produce any lasting effects in an unsettled tribe ; but where tiiere grows up a fixed and multiplying community, these differentiations become permanent, and in- crease with each generation. A larger pop- ulation, involving a greater demand for every commodity, intensifies the functional activity of each specialized person or class ; and this renders the specialization more definite where it already exists, and establishes it where it is nascent. By increasing the press- ure on the means of subsistence, a larger population again augments these results ; seeing tliat each person is forced more and more to confine himself to that which he can do best, and by which he can gain most. This industrial progress, by aiding future production, opens the way for a further growth of population, which reacts as be- fore : in all which the multiplication of effects is manifest. Presently, under these same stimuli, new occupations arise. Com- peting workers, ever aiming to produce im- proved articles, occiisionally discover better processes or raw materials. In weapons and cutting tools, the substitutirm of brunze for stone entails upon him who first makes it a great increase of demand — so great an in- crease that he i)resenlly finds nil his time occupied in making the bronze for the articles he sells, and is obliged to depute the fashion- ing of these to otheis : and, eventually, the making of bronze, thus gradually differen- tiated from a pre-existing occupation, be- comes an occupation by itself. But now mark the ramified changes which follow this change. Bronze soon replaces stone, not only in the articles it was first used for, but in many others— in arms, tools, and utensils of various kinds ; and so affects the manufacture of these things. Further, it affects the processes which these utensils subserve, and the resulting products — modi- fies buildings, carvings, dress, personal dec- orations. Vet again, it sets going sundry m.inufactures which were before impossible, from lack of a material fit for the requisite tools. And all these changes react on the peo- ple — increase their manipulative skill, theii intelligence, their comfort — refine their hab- its and tastes. Thus the evolution of a ho- mogeneous society into a heterogeneous one is clearly consequent on the general piiuciple that many effects are produced by one cause. Our limits will not allow us to follow out this process in its higher complications : else might we show how the localization of special industries in special parts ftf a kingdom, ae well as the minute subdivision of labor in the making of each commodity, are s-imilarly determined. Or, turning to a somewhat dif- ferent order of illustrations, we might dwell on the multitudinous changes — material, in- tellectual, moral — cau.sed by printing ; or the further extensive series of changes wrought by gunpowder. But leaving the intermediate phases of social development, let us take a few illustrations from its most recent and its passing phases. To trace the effec.ts of steam-power, in its manifold applications to mining, navigation, and manufactures of all kinds, would carry us into unmanageable detail. Let us confine ourselves to the latest embodiment of steam-power — the locomotive engine. This, as the proximate cause of our rail- way system, has changed the face of the country, the course of trade, and the habits of the people. Consider, first, the compU- PROGRESS: ITS LAW AND CAUSE. 251 cated sets of changes that precede the making of every railway— the provisional arrangt- ments, the meetings, the registration, the trial section, the parliamentary survey, the litho- graphed plans, the books of reference, the local deposits and notices, the application to Parliament, the passing Standing Orders Committee, the tirst, second, and third read- ings ; each of which brief heads indicates a multiplicity of transactions, and the devel- opment of sundry occupations — as those of engineers, surveyors, litliographers, parlia- lEootary .igents. share-brokers ; and the crc- aiion t»f sundry others — as those of traffic- takers, reference-takers. Consider, next, the yet more marked changes implied in rail- way construction — the cuttings, embankiugs, / tunnellings, diversions of roads ; the build- ing of bridges and stations ; the laying down of ballast, sleepers, and rails ; the making of engines, tenders, carriages and wagons : which processes, acting upon numerous trades, increase the importation of timber, the quarrj'ing of stone, the manufacture of iron, the mining of coal, the burning of bricks : institute a variety of special nuinu- factures weekly advertised in the liaihruy Times ; and, linally, open tlie way to sundry new occupations, as those of drivers, stokers, cleaners, plate-layers, etc., etc. And then consider the changes, more numerous and involved still, which railways in action pro- duce on the community at large. The organ- ization of every business is more or less mod- ified : ca.se of communication makes it better to do directly what was before done by proxy ; agencies are established where pieviously they would not have paid ; goods are obtained from remote wholesale houses instead of near retail ones, and commodities are used which dist{ince once rendered inaccessible. Again, the rapidity and small cost of carriage tend to specialize more than ever the industries of different districts — to contine each manufac- ture to the parts in which, from local advan- tages, it can be best carried on. Further, the diminished cost of carriage, facilitating distribution, equalizes prices, and also, on the average, lowers prices : tlius bringing divers ai tides within the means of those be- fore unable to buy tlunv, and so increasing their comforts and improving their liabits. At the same time the practice of travelling is immensely extended. Classes who never before thought of it, take annual trips to the sea ; visit their distant relation.^ ; make tours ; and so we are benefited in body, feel- ings, and intellect. Moreover, the more prompt transmission of letters and of news produces further changes — makes the pulse of the nation faster. Yet more, there arises a wide dissemination of cheap literature through railway bookstalls, and of adver- tisements in railway carriages : both of thenj aiding ulterior progress. Anei all the innumerable changes here briefly indicated are consequent on the inven- tion of the locomotive engine. The social 01 gun ism has been rendered more hetero- geneous in viitue of the many new occupa- tions introduced, and the many old ones further specialized ; prices in every place have been altered ; each trader has, more or less, modified his way of eloing business ; and almost every pcison has been affected in his actions, thoughts, emotions. Illustrations to the same effect might be indefinitely accumulated. That every influ- ence brought to bear upon society works multiplied effects, and thai increase of hete- rogeneity is due to this multiplication of effects, may be seen in the history of every iraele, every custom, every belief. But it is needless to give additional evidence of this. The only further fact demanding notice is, that we here see still more clearly than ever, the truth before pointed out, that in propor- tion as the area on which any force expends itself becomes heterogeneous, the results are in a yet higher degree multiplied in number and kind. While among the primitive tribes to whom it was first known, caoutchouc caused but a few changes, among ourselves the changes have been so many and varied that the history of them occupies a volume.* Upon the small homogeneous community inhabiting one of the Hebrides the electric telegraph would produce, were it used, scai-cely any results ; but in England the results it produces are multitudinous. The comparatively simple organization under which our ancestors lived five centuries ago, could have undergone but few modifications from an event like the recent one at Canton ; but now the legislative decision respecting it sets up many hundreds of complex modifica- tions, each of which will be the parent of numerous future ones. Space permittinL', we could willingly have pursueil the argument in relation to all the subtler results of civilization. As before, we showed that the law of progress to which the organic and inorgauic worlds conform, is also conformed to by language, sculpture, music, etc.; so might wc^ here show that the cause which we have hitherto found to de- termine progress holds in these cases also. We might demonstrate in detail how, in sci- ence, an advance of one division presently advances other divisions — iiow astronom}"" has been immensely forwarded by discoveries in optics, while other optical discoveries have initiated microscopic anatomy, and greatly aided the growth of physiology — how chem- istry has indirectly increased our knowledge of electricity, magnetism, biology, geology — how electricity lias reacted on chemistry, and magnetism, developed our views of light and heat, and disclosed sundry laws of nervous action. In literature the same truth might he ex- hibited in the manifold effects of the primi- tive my'stery-play, not only as originating the modern drama, but as affecting through it other kinds of poetry and fiction ; or in the still multiplying forms of periodical litera- ture that have descended from the first uews- * " Personal Narrative of the Origin of the Caout- chonc, or India-Kubber Manufacture in JEngland." By Thomas Hancock. 252 PROGRESS: ITS LAW AND CAUSE. paper, and which have severally acted and reacted oa other f jrms of literature aad on each otlier. The inlliiencc which a new school of painting — as that of the pre-RufT lel- ites — exercises upon other schools ; tiie hints which all kinds of pictorial art are deriving from pliotograi)hy ; the complex results of new critical doctrines, as those of Mr. Rus- kin, niiglit severally be dwelt upon as dis- playing the like multiplication of etlects. Bat it would needlessly tax the reader's pa- tience to pursue, in their many ramifications, these various changes : here become so in- volved and subtle as to be followed with some dillicuUy. Without further evidence, we venture to think our case is made out. The imperfec- tions of statement which brevity lias necessi- tated do not, we b^'lieve, militate against the propositions laid down. The qualifications here and there demandeil would not, it made, affect the inferences. Though in one in- stance, where suthcient evidence is not at- tainable, we have been unable to show that the law of progress applies, yet there is high probabilit}' that the same generalization holds which holds throughout the rest of creation. Though, in tra(;iug the genesis of progress, we have fretpiently spok.'u of com- plex causes as if they were simple ones, it still remains true that such causes are far less complex than their results. Detailed criti- cisms cannot alTect our main position. End- less facts go to show that every kind of prog- ress is from the liomogeneous to the hetero- geneous, and that it is so because each change is followed by many changes. And it is significant that where the facts are most ac- cessible and abundant, there are these truths most manifest. However, to avoid committing ourselves to more than is j^t proved, we must be content with saying that such are the law and the cause of all progress that is known to us. Should the nebular hypothesis ever be £S- tablished, then it will become manifest that the universe at large, like every organism, was once homogeneous ; that as a whole, and in every detail, it has unceasingly advanced toward greater heterogeneity ; and that its heterogeneity is still increasing. It will be seen that as in each event of to-day, so from the beginning, the decomposition of every ex- pended force into several forces has been per- petually producing a higher complication ; that the increase of heterogeneity so brought about is still going on, and must continue to go on ; and that thus progress is not an ac- cident, not a thing within human control, but a beneficent necessity. A few words must be added on the onto- logical bearings of our argument. Probably ,not a few will conclude that here is an at- tempted solution of the great questions with which philosophy in all ages has perplexed itself. Let none thus deceive themselves. Only such as know not the scope and the limits of science can fall into so grave an error. The foregoing generalizations apply, not to the genesis of things in themselves but to their genesis as manifested to the human consciousness. After all that has been said, the ultimate mystery remains just as it was. The explanation of that which is explicable does but bring out into greater clearness the iiiexplicalik'ness of that which remains be- hind. However we may succeed in rediiring the etiuation to its lowest terms, we are not therel)y enabled to determine tlie unknown quantity : on the contrary, it only becomes more manifest that the unknown quantity can never be found. Little as it seems to do so, fearless inquiry tends continually to give a firmer basis to all true religion. 'I'he timid sectarian, alarmed at the progress of knowledge, obliged tt abandon one by one the .superstitions of his ancestors, and daily findmg his cherished l>e liefs more and more shaken, secretly fears that all things may some day be explained, and has a corresponding dn-ad of science thus evincing the protoundest of all infidelity — the fear lest the truth be bad. On the other hand, the sincere man of science, content tc follow wherever the evidence leads Jiim, be- comes by each new inquiry more profoundly convinced thai the univer.se is an insoluble problem. Alike in the external and the inter nal worlds, i)e sees himself in the midst of perpetual changes, of which he can discover neither the beginning nor the end. If, tracing back the evolution of things, lie al- lows himself to entertain the hypothesis that all matter once existed in a diffused form, he finds it utterly impossible to conceive how this came to be so ; and equally, if she pecu- lates on the future, he can a.esign no limit to the grand succession of phenomena ever un- folding themselves before him. On the other hand, if he looks inward, he perceives that both terminations of the thread of conscious- ness are beyond his gra.«:p : he cannot remem- ber when or how consciousness conmienced, and he cannot examine the consciousness that at any moment exists ; for only a state of consciousness that is already past can be come the object of thought, and never one which is passing. When, again, he turns from the succession of phenomena, external or internal, to their es.seniial nature, he is cciuall}' at fault. Though he may succeed in resolving all prop- erties of objects into manifestations of force, he is not thereby enabled to realize what force is ; but finds, on the contrary, that the more he thinks about it the more he is baffled. Similarly, though analysis of mental actions may finally bring him down to seu.sations us the original materials out of which' all thought is woven, he is none the forwarder ; for he cannot in the least comprehend sen- sation — cannot even conceive how sensation is possible. Inward and outward things he thus discovers to be alike inscrutable in their ultimate genesis and nature. He sees that the materialist and spiritualist controversy is a mere war of words ; the disputants being equally absurd — each believing he under- stands that which it is impossible for any man to understand. In all directions his in- PROGRESS: ITS LAW AND CAUSE. 253 vestigations eventually bring him face to face with tlie unknowable ; and he yver more clearly perceives it to be the unknowable. He learns at once the greatness and the little- ness of liuman intellect.— its power in dealing with all tluit comes within the range of ex- perience ; its impotence in dealing with all that transcends experience. lie feels, wall a vividuebs which no otheis can, the utter in- coraprehensibleness of the simplest fact, con- sidered in itself. He alone tiuly sees that absolute knowledge is impossible. He alono knows that under all things there lies an im- penetrable mystery. IL THE PHTSIOLOGY OF LAUGHTER. Why do we smile when a chiltl puts on a tnan's liat ? or what induces us to laugh on reading that the corpulent Gibbon was un- able to rise from his knees after making a tender declaration '! The usual reply to such questions is, that laughter results from a perception of incongruity. Evm weie tlicre not on this reply the ol)vious criticism that laughter often occurs from extreme i)kiisuie or from mere vivacity, there would s-liil re- main the real problem, How comes a sense of the incongiuous to be followed by these peculiar bodily actions ? Some have alleged that laughter is due to the pleasure of a rela- tive self-elevation, which we feel on seeing the humilialinn of others. But this theory, whatever portion of truth it may contain, is, in the first place, open to the fatal objection that Iheie are various humiliations to others which produce in us anything but laughter ; and, in the second place, it does not iip|)!y to the many instances invvhich no one's dig- nity is implicated : as when we laugh at a good pun. Moreover, like the other, it is merel}' a generalization of ceitaiu conditions to laughter, and not an exjilauation of the odd movements which occur under these conditions. Why, whin greatly delighted, or impressed with cerlnin unexpected con- trasts of ideas, should there be a contraction of particular facial muscles, and jiarlicular muscles of the chest and aijdomen V Such answer to this question as maybe possible, can be rendered only by physii>logy. Every child has made the at it nipt to hold the foot still while it is tickled, and has failed ; and probably there is scarcely any one Avho has not vainly tried to avoid wink- ing when a hand has been suddenly passed before the eyes. These examples of muscu- lar movements which occur independently of the will, e)r in spite of it, illustrate what physiologists call reflex action ; as likewis.'; do sneezing and coughing. To this class ot' cases, in which involuutary motions are ac companied by sensations, has to be added another class of cases, in which involuutary motions are unaccompanied by sensations : instance the pulsations of the heart ; the contractions of the stomach during digestion. Further, the great mass of seemuigly volun- tary acts in such creatures asinsecis, worms. mollusks, are considered by physiologists to be as purely automatic as is the dilatation or closure of the iris under variations in quan- tity of light ; and similarly exemplify the law, thatan impression on the end of au afferent nerve is conveyed to some ganglionic centre, and is thence usually reflected along an efferent nerve to one or more muscles which it causes to contract. In a modifled form this principle holds with voluntary acts. Nervous excitation al- ways (ends to beget muscular motion ; and when it rises to a certain intensity, always does beget it. Not only in reflex actions, whether with or without sensation, do we see that special nerves, when raised to a state of tension, discharge themselves oa special muscles with which they are in- directly eonnected ; but those external ac- tions through which we read the feelings of others, show us that under any considerable tension the nervous system in general dis- charges itself on the muscular system in gen- eral : either with or witliout the guidance of the will. The shivering produced by cold implies irregular muscular contrac- tions, which, though at first only partly involuntary, become, when the cold is ex- treme, almost wliclly involuntary. When you have severely burned your linger, it is very diUicult to preserve a dignilied com- pLiSure : contortion of face or movement of limb is pretty sure to follow. If a man re- ceives good news with neither change of feature nor bodily motion, it is inferred that he is not much pleased, or that he has ex- traordinary self-control — either inference im- plying that joy almost universally produces contraction of the mu.scles ; and so alters the expression, or altitude, or both. And when we hear of the feats of strength which men have performed wlieu their lives were at slake — when we read how, in the energy of despair, evon paralytic ijalieuls have regained for a lime the use of liieir liiiib.s — we see still moie clearly the relations between nervous and muscular excitements. It becomes manifest both that emotions and sensations tend to generate bodily movements, and that the movements are vehement in proportion as the emotious or sensations are inlense.*^ This, however, is not the sole direction in which nervous excitement expends itself. Viscesa as well as muscles may receive the discharge. That the heart anil blood-vessels (which, indeed, being all contractile, may in a restricted sense be cla.ssed with the muscu- lar system) are (juickiy affected by pleasures and pains, we have daily proved to us. Every sensation of any acuteness accelerates the pulse ; and how tsensitive the heart is to emotions is testified by the familiar expres- fcious which use heart and feeling Jis convert- ible terms. Similarly with the digestive organs. Without detailing the various ways iu which these may be influenced by our liiental states, it sulUces to mention the * For nnmerons lllastrations Bee essay on " The Origin and Function of Mupic." 254 PROGRESS: ITS LAW AND CAUSE. maiked benefits derived by dyspeptics, as Weil as other invalids, fiom cheerful society, welcome news, cliange of scene, to show liow pleasurable feeling stimulates the vis- cera in general into greater activity. Tliere is still another direction in which any excited portion of the nervous system may discharge itself ; and a direction in which it usually does discharge itself when the excitement is not strong. It may p;iss on the stimulus to some other portion of the nervous system. This is what occurs in quiet thinking and feeling. The successive states which constitute consciousness result from this. Sensations excite ideas and eino tious ; these in their turns arouse other ideas and emotions ; and so, continuously. That is to say, the tension existing in particular nerves, or groups of nerves, wlien tiiey yield us certain sensations, ideas or emotions, gen- erates an ctjuivalent tension in some other nerves, or groups of nerves, wiMi wiiich there is a connection : the tlow of energy passing on, the one idea or feeling dies in producing the next. Thus, then, while we are totally unable to comprehend how the excitement of certain nerves should genernte feeling — while in tiie production of consciousness b}' physical agents acting on physical structure, we come to an absolute mystery never to be solved — it is yet quite possible for us to know by ob- servation what are the successive forms which this absolute mysterj"- may take. We see that there are three channels along which nerves in a state of tension may discharge themselves ; or rather, 1 should say, three classes of channels. They may pass on the excitement to other nerves that have no di- rect connections with the budily members and may so cause other feelings and ideas ; or they may pass on the excitement to one or more motor nerves, and so cause muscu iar contractions ; or they may pass on the excitement to nerves which supply the vis- cera, and may so stimulate one or more of these. For simplicity's sake, I have described these as alternative routes, one or other of which any current of uerve-furcc must take ; thereby, as it may be thought, impl^'ing that such current will be exclusively con- fined to some one of them. But this is by no means the case. Rarely, if ever, does it hap- pen that a state of nervous tension, present to consciousness as a feeling, expends itself in one direction oniy. Yery generally it maj' be observed to expend itself in two ; and it is probable that the discharge is never abso- lutely absent from any one of the three. There is, however, variety in the proportions in which the discharge is divided among these different channels under different cir- cumstances. In a man whose fear impels him to run, the mental tension generated is only in part transformed into a muscular stimulus : there is a surplus which causes a rapid cur- rent of ideas. An agreeable slate of feeling- produced, say by praise, is not wholly used up in arousing the succeeding phase of the teeling, and the new ideas appropriate to it ; but a certain portion overflows into the vis- ceral nervous system, increasing the action of the heart, and probably facilitating diges- tion. And here we come upon a class of con- siderations and facts which open the way to u solution of our special problem. For starting with the unquestionable truth, that at any moment the existing quan- tity of liberated nerve-force, which in an in- scrutable way produces in us the state we call feeling, munt exi)end itself in some di- rection — must generate an equivalent mani- festation of force somewhere — it clearly fol- lows that, if of the several channels it may take, one is wholly or partially closed, more nmst be taken b}' the others ; or that if two are closed, the discharge along the remaining one must be more intense ; and that, con- versely, should anything determine an un- usual cfllux in one direction, there will be a diminished ettlux in other directions. Daily experience illustrates these conclu- Bions. It is commonly remarked that the sup- pression of external signs of feeling makes feeling more intense. The deepest grief is silent grief. Why? Because the nervous excitement not discharged in muscular action discharges itself in other nervous excitements — arouses more numerous and more remote associations of melancholy ideas, and so in- creases the mass of feelings. People who conceal their anger are habitually found to be more revengeful than those who explode in loud speech and vehement action. Why ? Because, as before, the emotion is reflected back, accumulates, and intensifies. Simi- larly, men who, as proved by their powers of representation, have the keenest apprecia- tion of the comic, are usually able to do and say the most ludicrous things with perfect gravity. On the other hand, all are familiar Trith the trutii that bodily activity deadens emo- tion. Under great irritation we get relief by walking about rapidly. Extreme effort in the bootless attempt to achieve a desired end greatly diminishes the intensity of tlie desire. Those who are forced to exert tbemselvca after misfortunes do not suffer nearly so much as those who remain quiescent. If any one wishes to check intellectual excite- ment, he cannot choose a more efficient method t ban running till he is exhausted. Moreover, these cases, in which the pro- duction of feeling and thought is hindered by determining the nervous energy toward bodily movements have their counterparts in the cases in which bodily movements are hindered by extra absorption of nervous energy in sudden thoughts and feelings. If, 'when walking along, there flashes on you an idea that creates great surprise, hope, or alarm, you stop ; or if sitting cross legged, swinging your pendent foot, the movement is at once arrested. From the viscera, too, intense mental action abstracts energy. Joy, disappointment, anxiety, or any moral per- turbation rising to a great height will destroy appetite ; or if food has been taken, will ar- PROGRESS: ITS LAW AND CAUSE. 235 rest dit,'estioa ; and even a purely intellectuiil uctivily, when extreme, will do the like. Faets, then, fully hear out these a piiori inferences, that the nervous excitement at any moment present to consciousness as feeling must expend itself in some way or other ; that of the three classes of channels open to it, it must take one, two, or moie, according to circumstances ; that the closure or ohstruction of one must increase the dis- charge through the others ; and conversely, that if to answer some demand, the efflux of nervous energy in one direction is unusually great, there must l;e a corre:.;ponding de- crease of the efflux in other diieclious. Set- ting out from these premises, let us now see what interpretation is to be put on the phe- nomena of laughter. That laughter is a display of muscular ex- citement, and so illustrates the general law that feeling passing a certain pitch liabitually vents itself m bodily action, scarcx-Iy needs pointmg out. It perhaps needs pointing out, however, that strong feeling of almost any kind produces this result. It is not a sense of the ludicrous, only, which does it ; nor are the various forms of joyous emotion the sole uddilioniil causes. We have, Ijcsides the sardonic laughter and the hysterical laughter, which result from mental distress ; to which must be added certain sensations, us tickling, and, according to Mr. Bain, cold, and some kinils of acute pain. Strong feeling, mental or physical, being, then, the general cau.se of laughter, we have to note that the niu.scular actions constituting it are distinguished from m;)st others by this, that they are purposeles.s. In general, bodily motions that are prompted by feelings are di- rected to special ends ; as when we try to es- cape a danger, or struggle to secure a grati- fication. But the movements of chest and limbs which we make when laughing have no object. And now remaik that these quasi-convulsive contractions of the muscles Laving no object, but being results of an un- controlled discharge of energy, we may sec whence arise their special characters — how it happens that ccitain clas^-es of muscles are affected first, and then certain other classes. For an overflow of nerve force, undirected by any motive, will manifestly take first the most habitual routes ; and if these do not sutlice, will next oveiflow into the less habitual ones. Well, it is through the organs of speech that feeling passes into movement with the greatest frequency. The jaws, tongue, and lips are used not only to express strong irritation or gratification ; but that very moderate flow of mental energy which accompanies ordinary conversation, finds its chief vent through this channel. Hence it happens that certain muscles round the mouth, small and easy to move, are the first to contract under pleasurable emotion. The class of muscles which, next after those of articulation, are most con- stantly set in action (or extra action, wc should say) by feelings of all kinds, are those of res- piration. Uuder pleasurable or painful sen- sations we breathe more rapidly : possibly as a consequence of the increased demand for oxygenated blood. The sensations that accom- pany exertion also bring on hard-brealhing ; which here more evidently responds to the physiological needs. And emotions, too, agree- able and disagreeable, both, at first, excite i-espiration ; though the last subsequently de- press it. That is to say, of the bodily muscles, the re.spiratory are more constantly implicated than any others in those various acts which our feelings impel us to ; and, hence, when there occurs an undirected discharge of nervous . energy into the muscular system, it happens that, it the quantity be considerable, it con- vulses not only certain of the arliculatory and vocal muscles, but also those which ex- pel air from the lungs. Should the feeling to be expended be still greater in amount — too great to find vent in these classes of nuiscles — another class iomes into play. The upper limbs are set in lULtlioa. Children frequently clap their hands in glee ; by some adults the hands are rubbed together , and others, under still greater intensity of delight, slap their knees and sway their bodies backward and for- ward. Last of all, when the other channels for the escape of the surplus nerve force have beeu filled to overflowing, a yet further and less-used group of muscles is spasmodi- cally affected : the head is thrown back and the spine bent inward— there is a slight degree of what medical men call opisthotonos. Tims, then, without contending that the jtheuomeua of laughter in all their details are to be so accounted for, we see that in their cmeitMe tiiey conform to these general principles : that feeling excites to muscular action ; that wheu the muscular action isun- giiided by a purp.ose, the muscles first alluclcd are those which feeling most habit- ually stimulates ; and that as the feeling to be expeu led iucrea.ses in (piantity, it excites an increasing number of nuiscles, in a suc- cession determined by the relative frequency with which they respond to the regulated dictates of feeling. There still, however, remains the question with which we set out. The explanation Here given applies only to the laughter pro- duced hy acute pleasure or pain : it does not apply to the latighter that follows certain per- ceptions of incongruity. It is an insufflcient explanation that in these cases laughter is a result of the pleasure wc take in escaping from the restraint of grave feelings. That this is apart cause is true. Doubtless very often, as Mr. Bain says, "it is the coerced form of seriousness and solemnity without the reality that gives us that stiff position from which a contact with triviality or vul- garity relieves us, to our uproarious delight." And in so far as mirth is caused by the gush of agreeable feeling that follows the cessation of mental strain, it further illus- trates the generzd principle above set forth. But no explanation is thus afforded of the mirth which ensues when the short silence between the andante and allegro in one of 256 PROGRESS: ITS LAW AND CAUSK Beethoven's symphonies, is broken by a loud Boeeze. In this, und hosts of like cases, the mental tension is not coerced but spontaneous — not dis;igreoable but agreeable ; and the coming impressions to which the altention is directed promise a gratification that few, if any, desire to escape. Hence, when the un- lucky sneeze occurs, it cannot be that the laughter of the audience is due simply to the release from an irksome attitude of mind : some other cause must be scjugiit. This Ciiuse we shall arrive at by carrying our analysis a step farther. "We have but to consider tiie quantity of feeling that exists under such circumstances, and then to ask what are the conditions that determine Iho direction of its discharge, to at once reach a solution. Take a case. You are sitting in a theatre, absorbed in the progress of an in- teresting drama. Some climax has been reached which has aroused your sj^mpathies — say, a reconciliation between the hero and heroine, after long and painful misunder- standing. The feelings excited by this scene are not of a kind from which you seek re- lief ; but are, on the contrary, a grateful re- lief from the painful feelings with which you have witnessed the previous estrangement. Moreover, the sentiments these fictitious per- sonages have for the moment inspired you with, are not such as would lead you to re- joice in any indignity olfered to them ; but rather, such as would make you resent the indignity. And now, while you are contem- plating the reconciliation with a pl.msurable sympathy, there appears from behind the scenes a tame kid, which, having stared round at the audience, walks up to the lovers and sniffs at them. You cannot help joining in the roar which greets this contretemps. Inexplicable as is this irresistible burst on th(; hypothesis of a pleasure in escaping from mental restraint, or on the hypothesis of a pleasure from relative increase of self impor- tance when witnessing the humiliation of others, it is readily explicable if we consider what, in such a case, must become of the feeling that existed at the moment the incon- gruity arose. A large mass of emotion had been produced ; or, to speak in physiological language, a large portion of the nervous sys- tem was in a state of tension. There was also great expectation with respect to the further evolution of the scene — a quantity of vague, nascent thought and emotion, into which the existing quantity of thought and emotion was about to pass. Had there been no interruption, the body of new ideas and feelings next excited would have sufficed to absorb the whole of the lib- erated nervous energy. But now, this large amount of nervous energy, instead of being allowed to expend itself in producing an equivalent amount of the new thoughts and emotions which were nascent, is suddenl}^ checked in its flow. The charmels along which the discharge was about to take place are closed. The new channel opened — that afforded by the appearance and proceedings of the kid — is a small one ; the ideas and feeling suggested are not numerous and massive enough to carry off the nervou.* energy to be expended. The excess niu.st therefore discharge itself in some other direc- tion ; and in the way already explained, there results an efflux through the motor nerves to various classes of the muscles, pro- ducing the half-convulsive actions we term laughter. This explanation is in harmony with the fact, that vvhen, among several persons who witness the .same ludicrous occurrence, there arc some who do mA laugh ; it is because there has arisen in them an emotion not par- ticipated in by the rest, and which is sutficient- ly massive to absorb all the nascent excite- ment. Among the spectators of an awkward tumble, those who preserve their gravity are those in whom there is excited a degree of sympathy with the sufferer, suIVicientiy great to serve as an outlet for the feeling which the occurrence had turned out of its previous course. Sometimes auger carries off the arrested current, and so provenls laughter. An instance of this was lately furnished me by a friend who had been witnessing the feats at Franconi's. A tremendous leap had just been made by an acrobat over a number of horses. The clown, seemingly envious of this success, made ostentatious preparation for doing the like ; and then, taking the pre- limmary run with immense energy, slopped short on leaching the first horse, and pre- tended to wi|)c some dust from its haunches. In the majority of the spectators merriment was excited ; but in my friend, wound up by the expectation of the coming leap to a state of great nervous tension, the effect of the balk was to produce indignation. Experi- ence thus proves what the theory implies — namely, that the discharge of arrested feel- ings into the muscular system takes place only in the absence of other adequate chan- nels — does not lake place if there arise other feelings equal in amount to those arrested. Evidence still more conclusive is at hand. If we contrast the incongruities which pro- duce laughter with those which do not, we at once see that in the non-ludicrous ones the unexpecleil state of feeling aroused, though wholly different in kind, is not less in quan- tity or intensity. Among incongruities that may excite anything but a laugli, Mr. Baia instances : " A decrepit man under a heavy burden, five loaves and two fishes among a multitude, and all unfitness and gross dis- proportion ; an instrument out of tune, a fly in ointment, snow in May, Archimedes studying geometry in a siege, and all discor- dant things ; a wolf in slieep's clothing, a breach of bargain, and falsehood in general, the multitude taking the law in their own hands, and everything of the nature of dis- order ; a corpse at a feast, parental cruelty, filial ingratitude, and whatever is unnatural ; the entire catalogue of the vanities given by Solomon are all incongruous, but they cause feelings of pain, anger, sadness, loathing,, rather than mirth." Now, in these cases,, where the totally unlike state of conscious- PROGRESS: ITS LAW AND CAUSE. 257 ness suddenly produced is not Inferior in mass to the preceding one, the conditions to laughter are not fulfilled. As above shown, laughter naturally results only when con- sciousness is unawares transferred from great things to small — onl}' when there is what we call a descending incongruity. And now observe, finally, the fact, alike inferable d fiiori and illustrated in expeii ence, that an axcending incongruity not only fails to cause laughter, but woiks on the muscular system an effect of exactly the re- verse kind. "When after sonictliing very in- significant there arises without anticipation something very grtat, the emotion we call wonder results ; and this emotion is accom- panied not by an excitement of the muscles, but by a relaxation of thtm. In children and country people, that falling of the jaw which occurs on witnessing sometliing that is imposing and unexpected, exemplifies this effect. Persons who have been wonder- struck at the production of very striking re- sults by a seemingly inadequate cause, are frequently described as unconsciously drop- ping the things they held in their hands. Such are just the effects to be anticipated. After an average state of consciousness, absorbing but a small quantity of nervous energy, is aroused without the slightest notice, a strong emotion of awe, terror, or admiration ; j()ined with the astonishment due to )in a[)parcnt want of adequate caus- ation. Tliis new state of consciousness de- m:ui(ls far more nervous energy than that which it has suddenly replaced ; and this in- creased absorption of nervous energy in mental changes involves a temporary dimi- nution of the outflow in other directions : whence the pendent jaw and the relaxing grasp. One further observation is worth making. Among the several sets of channels into which surplus feeling might be discharged, was named the nervous system of the viscera. The sudden overllow of an arrested mental excitement which, as we have seen, results from a descending incongruity, must doubt- less stimulate not only the muscular system, as we see it does, but also the internal organs ; the heart and stomach must come in for a share of the discharge. And thus there seems to be a good physiological basis for the popular notion that mirlh-cieating excitement facilitates digestion. Though in doing so I go beyond the boundaries of the immediate topic, I may fitly point cut that the method of inquiry here followed is one which enables us to understand various phenomena besides those of laughter. To show the importance of pur- suing it, 1 will indicate the explanation it furnishes of another familiar class of facts. All know how generally a large amount of emotion disturbs the action of the intellect, and interferes with the power of expression. A speech delivered with great facility to tables and chairs is by no means so easily delivered to an audience. Every schoolboy can testify that his trepidation, when stand- ing before a master, has often disabled him from repeating a lesson which he had duly learned. In explanation of this we com- monly say that the attention is distracted — that the proper train of ideas is broken by the intrusion of ideas that are irrelevant. But the question is, in what manner does unusual emotion produce this effect ; and we are here supplied with a tolerably obvious answer. The repetition of a lesson, or set speech previously thought out, implies the flow of a very moderate amount of nervous sxcitement through a comparative!}'' narrow ohannel. The thing to be done is simply to call up in succession certain jireviously- arranged ideas — a process in which no great amount of mental energy is expended. Hence, when there is a largo quantity of emotion, which must be discharged in some direction or other ; and when, as usually happens, the restricted series of intellectual actions to begone through does not sullice to carry it off. there result discharges along other channels besides the one prescribed : there are aroused various ideas foreign to the train of thought to be pursued ; and these tend to exclude from consciousness those which should occupy' it. And now observe the meaning of those bodily actions spontaneously set up under these circumstances. The schoolboy saying his lesson, conunonly has his fingers actively engaged — perhaps in twisting about a broken pen, or perhaps squeezing the angle of his jacket ; and if told to keep his hands still he soon again falls into the same or a similar trick. Many anecdotes are current of public speakers having incurable automatic actions of this cla.ss : barristers who perpetually wound and unwound pieces of tape ; mem- bers of parliament ever putting on and tak- ing off their spectacles. So long as such movements are unconscious, they facilitate the mental actions. At least this seems a fair inference from the fact that confusion frequently results from putting a stop to them : witness the case narrated by Sir Walter Scott of his schoolfellow, who became unable to say his lesson after the removal of the waistcoat-button that he habitually fin- gered while in class. But why do they facili- tate the mental actions ? Clearly because they draw off t* portion of the surplus ner- vous excitement. If, as above explained, the quantity of mental energy generated is greater than can find vent along the narrow channel of thought that is open to it ; and if, in consequence, it is apt to produce con- fusion by rushing into other channels of thought ; then by allowing it an exit through, the motor nerves into the muscular system the pressure is diminished, and irrelevant ideas are less likely to intrude on conscious- ness. This further illustration will, 1 think, justify the position that something may be achieved by pursuing in other cases this method of psy<;holog.ical inquiry. A com- plete explanation of the phenomena requires us to trace out all the consequences of any 258 PROGRESS: ITS LAW AND CAUSE. given state of consciousness ; and we cannot do this without studying the elTects, bodily and mental, as varying in quantity at each other' expense. We should probably learn much if we in every case asked, Where is all the nervous energy gone ? 111. THE ORIOrX AND FUNCTION OF MUSIC. When Carlo, standing chained to his kennel, sees his master in the distance, a slight motion of the tail indicates his but feint hope that he is about to be let out. A much more decided wagging of the tail, passing by and by into lateral undulations of the body, follows his master's nearer ap- proach. When hands are laid on his collar, and he knows that he is really to have an outing, his jumping and wriggling are such that it is by uo moans easy lu loose his fast- enings. And when he finds himself actually free, his joy expends itself in bounds, in pirouettes, and in scourings hither and thither iit the top of his spued. Puss, too, by erect- ing her tail, and by every time raising her back to meet the caressing hand of her mis- tress, similarly expresses her gratification by certain muscular actions ; as likewise do the parrot by awkward dancing on Ids perch, and the canary by hopping and lluttering about his cage with unwonted rapidity. Under emotions of an opposite kind, animals equally display muscular excitement. The enraged lion lashes his sides with his tail, knils his brows, i)rotiudes iiis claws. Tlio cat sets up her back ; the d(jg retracts his upper lip ; the horse throws back his cars. And in the struggles of creatures in pain, we see that the like relation lioKls between ex- citement of the muscles and excitement of the nerves of sensation. In ourselves, distinguished from lower creatures as we are by feelings alike more powerful and more varied, parallel facts are at once mure conspicuous and more numerous. We may conveniently look at them in groups. We shall find that pleasurable sensations and painful sensations, pleasurable emotions and painful emotions, all tend to produce active demonstrations in proportion to their inten- sity. In children, and even in adults who arc not restrained by regard for appearances, a highly agreeable t'usle is followed by a smacking of the lips. An infant will laugh and bound in its nurse's arms at the sight^f a brilliant color or the hearing of a new sound. People are apt to beat time with Lead or feet to music which particularly pleases them. In a sensitive person an agree- able perfume will produce a smile ; and , smiles will be seen on the faces of a crowd f gazing at some splendid burst of fireworks. Even the pleasant Eeusaliou of warmth felt on getting to the fireside out of a winter's storm, will similarly express itself in the face. Painful sensations, being mostly far more intense than pleasurable ones, cause muscu- lar actions of a much more decided kind. A sudden twinge produces a convulsive .start of the whole body. A pain less violent, but continuous, is accompanied by a knitting of the brows, a setting of the teeth or biting of the lip and a contraction of the features gen- erally. Under a persistent pain of a .severer kind, other muscular actions are adde.ic is still more distinguished by its com- parative neglect of the notes in which we talk, and its habitual use of those above or below them ; and, moreover, that its most pas- sionate effects are comraonlj' produced at the two extremities of its scale, but especially the upper one. A yet further trait of strong feeling, simi- larly accouutKl f »r, was the employment of larger intervals than are employed in com- mon converse. This trait, also, every ijallad and aria carries to an extent beyond that heard in the spontaneous utterances of emo- tion : add to which, that the direction of these intervals, which, as diverging from or converging toward the medium tones, wo found to be ]ihy.siolr)gically expressive of in- creasing or decreasing emotion, may be ob- served to have in music like meanings. Onco more, it was pointed out that not only extreme but also rapid variations of pitch are charac- teristic of mental excitement ; and once more we see in the (piick changes of every melody that song carries the characteristic as far, if not farther. Thus, in respect alike of l oriiinury speech than are Ih" .songs of civilized races. Join- ing with tins liie fact that there are still ex- tant among boatmen and others in the East, ancient chants of a like monotonous charac- ter, we may infer that vocal musii; originallv diverged from emotional speech in a gracf- ual. unol)trusive manner ; and this is the in- f(-r<'iice to which our argument points. Fur- ther evidence to the same effect is supplied by Greek history. The early poems of the Greeks — which, be it remembered, were sacred legenils embodied in that rhythmical, metaphorical language which strong feeling excites — were not recited, but chanted : the tones and the cadences wero mutle musi- cal by the same intluencea which made the speech poetical. By those who have investigated the mat- ter, this chanting is believed to have been not what we call singing, but nearly allied to our recitative (far simpler, indeed, if we may judge from the fact that the early Greek lyre, which had hul four strings, was played in unison with the voice, which was there- fore confined to four notes) ; and as such, much less remote from common speech than our own singing is. For recitative or musi- cal recitation, is in all respects intermediate between speech and song. Its average effects are not so loud as those of song. Its tones are less sonorous in timbre than those of song. Commonly it diverges to a smaller extent from the middle notes — uses notes neither so liigh nor so low in pitch. The intertals ha- bitual to it are neither so wide nor so varied, \ls rate of variation \?, wot so rapid. And at the same time that its primary 7-Ay^/mi is less decided, it has none of that secondary rhythm produced by recurrence of the same or parallel musical phras»s, which is one of the marked characteristics of song. Thus, then, we may not only infer, fem the evi- dence furnished by existing barbarous tiibes, that the vocal music of prehistoric times was emotional speech very slightly exalted, but we see that the earliest vocal music of which PROGRESS: ITS LAW AND CAUSE. 263 we have any account differed much lesa from emotional speech than does the vocal music of our days. That recitative — beyond which, by the waj', tlie Chinese and Hindoos seem never to have advanced — jriew naturally out of the modulations and cadences of strong feeling, we have indeed still current evidence. There are even now to be met w'th occasions on which strong feeling vents itself in this form. Whoever has been present when a meeting of Quakers was addressed by one of their preachers (whose practice it is to speak onl}' \inder the inliuence of religious emotion), must have been struck by the quite unusual tones, like those of a subdued chant, in which the address was made. It is dear, too. that the intoning used in some churches is repre- sentative of this same mental state, and has been adopted on account of the instinctively felt congruily between it and the contrition, supplication, or reverence verbal)}' expressed. And if, as we have good reason to l)elieve, recitative arose by degrees out of emotional speech, 1t becomes manifest that by a con- tinuance of the same process song has arisen out of recitative. Just as, from the orations and legends of savages, expressed in the metaphorical, allegorical style natural to them, there sprung epic poetry, out of which lyric poetry was afterward developcil ; so, from the exalted tones and cadences in \n hich such orations and legends were delivered, camo the chant or recitative nuisic, from whence lyrical music has since grown up. And there has not only thus been a simultaneous and parallel genesis, but there is also a paral- klisni of results. For lyrical poetry (liU'ers from epic poetry just as lyrical music dillers from recitative : each sliU further intensities the natural language of the cmotii^ns. Lyri- cal poetry is more metaphorical, more hyper- bolic, more elliptica!, and adds the rliythm of lines to the rhythm of feet ; just as lyrical music is louder, more sonorous, more extreme in its intervals, and adds the rhythm of phrases to the rhythm of bars. And the known fact that out of epic poetry the stronger passions developed lyrical poetry as their appropriate veliicle, strengthens the in- feience that they similarly developed lyrical music out of recitative Nor indeed are we without evidences of the transition. It needs but to listen to an opera to hear the leading gradations. Between the comparatively level recitative of ordinary dialogue, the more varied recitative with wider mtervals and higher tones used in ex- citing .scenes, the still more musical recitative which preludes an air, and the air itself, the successive steps are but small ; anfl the fact that among airs themselves gradations of like nature may be traced, further confirms the conclusion that the highest form of vocal music was arrived at by degrees. Moreover, we have some clew to the influ- ences which have induced this development, and may roughly conceive the process of it. As the tones,intervals, and cadences of strong emotion were the elements out uf which son^' was elaborated ; so, we may expo jt to And that still stronger emotion produ<:ed the elab- oration ; and we have evidence implying this. Instances in abundance may be cited, Bhowing that musical composers are men of extremely acute sensibilities. The VJo of Mozart depicts him as one of intensely active affections and highly impressionable temper- anient. Various anecdotes represent Bee- thoven as very susceptible and very passion- ate. j\leudels3ohn is described by those who knew him to have been full of tine feeling. And the almost incredible sensitiveness of Chopin has l)eea illustrated in the memoirs of George Sand. An unusually emotional nature being thus the general characteristic of musical composers, we have in it just the agency required for the development of reci- tative and song. Intenser feeling producing inteuser manifestations, any cause of excite- ment will call forth from such a nature tones and changes of voice more marked than those calleil forth from an ordinary nature — ; will generate just those exaggerations which we have found to distiuguisii the lower vocal music from emotional speech, and the higher vocal music from tiie l.-wer. Thus it becomes credible that the four-toned recitative of the early (J reek poets (like all poets, nearly allied to cumposers in the comparative intensity of their feelings), was really nothing more than the slightly exaggerated emotional speech natural to them, which grew by frequent use into an organized form. And it is readily couceivaijle tliat the accumulated agency of siibsecjuent poet musicians, inheriting and adding to the products of those who went before them, sutliced, in the course of the ten centuries which we know it took, to de- velop this four-toned recitative into a vocal music having a ranj-e of two octaves. Not only may we so understand how more sonorous tones, greater extremes of pitch, and wider intervals, were gradually intro- duced, but also how there arose a greater variety and com{ilexity of musical expres- sion. For this same passionate, enthusiastic temperament, which naturally leads the musical comi)user to express the feelings pos- sessed by others as well as himself, in ex- tremer intervals and more marked cadences than they would use, also leads him to give musical utterance to feelings which they either do not exiierience, or experience in but slight degrees. In virtue of this general susceptibility which distinguishes him, he regards with emotion events, scenes, con- duct, character, which produce upon most men no appreciable effect. The emotions so generated, compounded as they are of the simpler emotions, are not expressible by in- tervals and cadences natural to these, but by combinations of such intervals and cadences ; whence arise more involved musical phrases, conveying more complex, subtle, and un- usual feelings. And thus we may in some measure understand how it happens that music not only so strongly excites our more familiar feeluigs, but ais3 produces feelings we never had before ; arouses dormant sen- timents of which we had not C!;nc. ived tho 2fi4 PROGRESS: ITS LAW AND CAUSE. possibility, and do not knuw tlie meaning ; or, as Ricijter sa3-s, tells us of tbiogs we buve not seen and sliall not see. Indirect evidences of several kinds remain to be brielly pointed out. One of tliem is the dillieulfy, not to .say impossibility, of otiierwise accounting for the expressiveness of music. Whence comes it that special combiualions of notes sh( at work a modifying? influence of the kind they assign as tlie cause of these specific dillerences : an influence which, Ihoujri) slow in its action, docs, in time, if the circumstances demand it. pro- duce marked changes — an inflaeuce whicli, to all appearance, would produce in tlie mill- ions of years, and under tiic great varielics of condition which geological records inipl^', anv amount of change. Which, then, is the most rational hj'poth- esis ? — that of special creations, wlii(;h has neither a fact to sui)port it nor is even defi- nitely coucei7al)le ; or that of modification, ■which is not only definitely cuuceivahle, but is countenanced hy the habitudes of every existing organism ? That by any series of changes a protozoon should over become a mammal, seems to those who are not familiar with zoology, and ■who lia"vc not .seen how clear becomes the relationship between the simplest and tiie most complex forms when intermediate forms are examined, a very grotesque notion. Ilabituallj' looking at things rather in their statical than in their dynamical asjicct, they never realize the fact thiit, by small incrc- ments of modification, any amount of modi fication may in time be generated. That surprise wiiich they feel on finding one whom they last saw as a boy, grown into a man, becomes incredulity when the degree of change is greater. Nevertheless, abun- dant instances are at hand of the mode in which we may pass to the most diver.se forms, by iusensii)le gradations. Arguing the matter some time since with a learned professor, I illustrated my position thus : You admit that there is no ajiparcnt relation- ship between a circle and an hyperbola. The one is a finite curve ; the other is au infinite one. All parts of the one arc alike ; of the other no two parts arc alike. The one in- closes a space ; the other will not inclose a space though produced forever. Yet oppo- site as are these curves in all their i>roperties, they may be connected together by a series of Tntermediate curves, no one of which dif- fers from the adjacent ones in any appre- ciable degree. Thus, if a cone be cut by a plane at right angles to its axis we get a circle. If, instead of being perfectly at right angles, the plane subtends with the axis an angle of 8'J^ 59', we have au ellipse, which no human eye, even when aided by an accu- late pair of composses, can distinguish from a circle. Decreasing the angle minute by minute, the ellipse becomes first perceptibly eccentric, then manifestly so, and by and by acquires so immensely elongated a form as to bear no recognizable resemblance to a circle. By continuing this process, the ellipse passes insensibly into a parabola ; and ultimately, by still further diniiuishing the angle, into an hyperbola. Now here we have four different species of curve — circle, ellipse, parabola, and hyperbola — each hav- ing its peculiar properties and its separate equation, and the first and last of which are quite opposite in nature, rnrinrctod together as members of one .series, all producii)le by a single process of in.sensible modification. But the blindness of those who think it absurd to suppose that comi>lex organic forms may have arisen by successive modifi- cations out of simple ones, beeomes astonish- ing when we remember that complex organic forms arc daily being thus produced. A tree difft by " the hero as king," any more than by " collective wisdom," that men have been segregated into producers, whole sale distributors, antl retail distributors. The whole of our industrial organization^ from its main outlines down to its minutest details, has become what it is, not simply witliJiit legislative guidance, but, to a con- suleral)le extent, iu spile of legislative hin- drances. It has arisen under the pressure of human wants and activities. While each citizLU has bee:i pursuing his individual wel- fare, aud none taking thought about division of labor, or, indeed, conscious of the need for it, division of labor has yet been ever be- coming more comiilete. It has been doing this slowly and sdenlly ; scatcely any having obseived it until (piite modern times. By steps so small, that year after year the in- dustrial arrangements have seemed to men just what they were before — by changes ad insensible as tluse through which a seed passes into a tree— society has become tho complex body of mutually -dependent work- ers wiiich we now see. And this economic organi/.ati CAUSJIJ. makes it obvious that the firt-jit divisions tlius early formed stand to eacli oilier in a rela- tion similar to tliat in wliich llie [)rimary divisions of tlie embryo stand to eacli other. For, from its tirst appearance, tlie class of chiefs is that by which the external acts of tlie society are controlled : alike in war, in negotiation, and in migration. Afterward, wnile the upper class grows distinct from the lower, and at the same time becomes more and more exclusively regulative and defen- sive in its functions, alike in the peisons of kings and subordinate rulers, priests, and military leaders ; the inferior class becomes more and more exclusively occupied in pro- viding the necessaries of life for the com- munity at large. From the soil, with which it conies in most direct contact , the mass of the people takes up and prcpaics for use thefcod and such rude articles of manufacture as are known, while the overl3'ingm;iss of superior men, maintained by the working population, deals with circumstances external to the communil}' — circumstances with which, by position, it is more immediately concerned. Ceasing by and by to have any knowledge of or power over the concerns of the socitty as a whole, the serf class becomes devoted to the processes of alimentation ; while the noble class, ceasing to take any part in the processes of alimentation, becomes devoted to the co-ordinated movcmen'.s of the entire body politic. Eijually remarkable is a further analogy of like kind. After the mucous uml serous layers of the embryo have se[iaratcd, thero presently ari.ses between the two, a third, known to physiologists as the vascular layer — a layer out of which are developed the chief blood-vessels. The mucous layer ab- sorbs nutriment from the mass of yelk it in- closes ; this nutriment has to be transferred to the overlying serous layer, out of which the nervo-muscular system is being devel- oped ; and between the two arises a vascular system by which the transfer is effected— a system of vessels which continues ever after to be the transferrer of nutriment from the places where it is absorbed and prepared, to the places where it is needed for growth and repair. Well, may we not trace a parallel step in social progress ? Between the governing and the governed, there at first exists no intermediate class ; and even iu some societies that have reached considerable sizes there are scarcely any but the nobles and their kindred on the one hand, and the serfs on the other : the social struc- ture being such that the transfer of com- modities takes place directly from slaves to their masters. But in societies of a higher type there grows up between these two primitive classes another— the trading or middle class. Equally at first as now, we may see that, s[)eaking generally, this middle class is the analogue of the middle layer in the embryo. For all traders are essentially distributors. Whether they be wholesale dealers, who collect into large masses the commodities of various producers, or whether they be retailers, who divide out to those wlio want them, the masses ot com- modities thus collected together, all mercan- tile men are agents of transfer from the places where things are produced to the I)laces where tiiey are consumed. Thus the distributing apparatus of a society answers to the distributing apparatus of a living body ; not only in its functions, but in its intermediate origin and subst'(iuent position, and in the time of its appearance. Without enumerating. the minor differen- tiations which these three great classes after- ward undergo, we will merely note that throughout they follow the same general law with the differentiations of arr individ- ual organism. In a society, as in a ru(!imeu- tary animal, we have seen that the most gen- eral and broadly contrasted divisions are the first to make their appearance ; and of the subdivisions it continues true in both casts, that they arise in the order of decreasing generality. het us observe next, that in the one case as in the other, the si)tcializatiou3 are at first very inconi[)lele, and become nioie com- plete as organization progres.scs. We saw that iu primitive tribes, as iu the nirnplest animals, there remains much community of functii n between the parts that aie nomi- nally different : that, for instance, the class of chiefs long remain industrially the same as the inferior class ; just as in a Ihjdra, the property of contractility is possessed by the units of the eudoderm as well as by those of the ectoderm. We noted also how, as the society advanced, the two great primitive classes partook loss and less of each other's functions. And we have here to remark, that all subse(iuent specializations are at first vague, and gradually become distinct. " In the infancy of society," says M. Guizot, "everything is confused and uncertain; there is as yet no fixed and precise line of demarcation between the different powers iq a state." " Originally kings lived like other landowners, cu the inccmes derived from their own private estates." Nobles were petty kinus, and kings only the most power- ful nobles. Bishops were feudal lords and military leaders. The right of coining money was possessed by powerful sulijects, and by the Church, as well as by the king. Every leading man exercised alike the functions of landowner, farmer, soldier, statesman, judge. Retainers were now soldiers, and now la- borers, as the day required. But by degrees the Church has lost all civil jurisdiction ; the state has exercised less and less control over religious teaching ; the military class has grown a distinct one ; handicrafts have con- centrated in towns ; and the spinning-wheels of scattered farmhouses have disappeared before the machinery of manufacturing dis- tricts. ISot only is all progress from the homogeneous to the heterogeneous, but at the same time it is from the indefinite to the definite. Another fact which should not be passed over, is that in the evolution of a large so- PnOGRESS: ITS LAW AND CAUSE. 277 clety out of an aggregation of small ones there is u gradual obliteration of the original lines of sepuratum — a change to ■which, also, we may see analogies in living bodies. Throughout the sub'kingiiom Annuhm this is cleail}' and variously illustrated. Among the lower types of this sub-kingdom the body consists of numerous segments that are alike in nearly every particular. Eacli has its external ring ; its pair of legs, if the creat- ure has legs ; its equal portion of intestines, ■ or else its separate stomach ; its equal por- tion of the great blood-vessel, or, in some cases, its separate heart ; its equal portion of the nervous cord, and, perhaps, its separate pair of ganglia. But in the highest types, as in the large Vrusiaan, many of the segments are completely fu.sed together, and tlie in- ternal organs are no longer uniformly re- peated in all the scgmouis. Now the seg- ments of which nations at first consist lose their separate external and inttrnal structures in a similar manner. In feudal times the minor communities governed by feudal lords, were severally organized in the same rude way, and were held together only by the fealty of their respective rulers to some suzerain. But along with the growth of a central power the demarcations of these local communities disappeared, and their separate organizations merged into the gen- eral organization. Tlie like is seen on a larger scale in the fusion of England, Wales, Scotland, and Ireland ; and, on tlie conti- nent, in the coalescence of provinces iuto kingdoms. Even in the disappearance ot Jaw made divisions, the process is analogous. Among the Anglo-Su.xons Englaud was di- vided iuto tilliiugs, hundreds, and counties : there were county courts, courts of hundred, and courts of titliing. Tiic courts of tithing disappeared first ; then the courts of hun- dred, which have, however, left traces ; while the county jurisdiction still exists. But chiefly it is to be noted, that there eventually grows up an organization which has no reference to these original divisions, but traverses them in various directions, as is the case in creatures belonging to the sub- kingdom just named ; and, further, that in both civses it is the sustaining organization which thus traverses old boundaries, wliile in both cases it is the governmental or co-or- dinating organization in which tho original boundaries continue traceable. Thus, in the highest Aanulosa, the exo-skeleton and the muscular system never lose all traces of their primitive segmentation, but throughout a great part of the body the contained vis- cera do not in the least conform to the ex- ternal divisions. Similarly, with a nation, we see that while, for governmental pur- poses, such divisions as counties and parishes still exist, the structure developed f jr carry- ing on the nutrition of society wholly ig- nores these boundaries : our great cotton- manufacture spreads out of Lanca-shire into North Der!)yshire ; Leicestershire anrl Not- tinghamshire have long divided the stocking- trade between them ; one great centre for the production of iron and iron-goods in- cludes parts of Warwickshire, Staffordshire, Worcestershire ; and those various speciali- zations of agriculture which have made dififerent parts of England noted for different products show no more respect to county boundaries than do our growing towns to the boundaries of parishes. If, after contemplating these analogies of structure, we inquire whether there are any such analogies between the processes of or- ganic change, the answer is. Yes. The causes which lead to increa.se of bulk in any part of the body politic are of like nature with those which lead to increase of bulk in any part of an indi viilual body. In both cases the .tiitecedent is greater functional activity, consequent on greater demand. Each limb, viscus, gland, or other meml)er of an animal is developed by exercise — by actively dis- charging the duties which the body at large requires of it ; and similarly, rmy class of laborers or artisans, any manufacturing cen- tre, or any ollicial agency, begins to enlarge when the community devolves on it an in- crease of work. In each ca.se, too, growth has i»s conditions and its limits. That any organ in a living being may grow by exer- cise there needs a due supply of blood : all action implies waste ; blood brings the mate- rials tor repair ; and before there can be growth, the (luantity of blood supplied must be more than that requisite for repair. So is it in a society. If to some district which elaborates for the community partic- ular commodities — say the woollens of York- shire — there comes an augmented demand ; anrl if, in fulfilment of this demand, a cer- tain expenditure and wear of the manufac- turing organization are incurred ; and if, in payment for the extra supply of woollens sent away there comes back only such quantity of commodities as replaces the expenditure, and makes good the waste of life aud ma- chinery, there can clearly be no growth. That there may be growth, the commodities obtained in return must be more than suffi- cient for these ends ; and just in proportion as the surplus is great will the growth bo rapid. Whence it is manifest that what in commercial affairs we call jirofit answers to the excess of nutrition over waste in a living body. ISIoreover, in both cases, when the functional activity is high and tlie nutrition defective, there results not growth, but de- cay. If in an animal any organ is worked so hard that the channels which bring blood cannot furnish enough for repair, the organ dwindles ; and if in the body politic some part has been stimulated into great produc- tivity, and cannot afterward get paid for all its produce, certain of its members become bankrupt, and it decrea.ses in size. One more parallelism to be here noted is, that the different [tarts of the social organ- ism, like the different parts of an individual organism, compete for nutriment, and sev- erally obtain more or less of it according as they are discharging more or less dut}'. If a man's braiu be over-excited, it will abstract PROGRESS: ITS LAW AND CAUSE. blood from his viscera and stop digestion ; or digestion actively going on will so alTect the circulation liirougii tiie Ijrain as to cause drowsiness ; or great muscular exertion will determine such n quantity of blood to the limbs as to arrest digestion or cerebral ac- tion, as the case may Itc. So, likewise, in a society, it frequently happens that great ac- tivity in some one direction causes partial arrests of activity elsewhere, b}' abstracting capital, that is commodities : as instance the way in which tlie sudden development of our railway system hampered commercial operations ; or the way in which the raising of a large military force temporarily stops the growth of leading industries. The last few paragraplis introduce the next division of our subject. Almost un- awares "we have come upon the analogy ■which exists between the blood of a living body and tlie circulating mass of commodi- ties in the body politic. We have now to trace out this analogy from its simplest to its most complex manifestations. In the lowest animals there exists no blood properly so called. Through the small aggre- gation of cells which make up a Ihjdra, per- meate the juices abscjrbed from the food. There is no apparatus for elaborating a con- centrated ami puriticd nutriment, and dis- tributing it among the component units ; but these component units directly imbibe the uni)repared nutriment, cither from tlve digestive cavity or from each other. May we not say that this is what takes place in an aboriginal tribe? All its members severally obtain for themselves the necessaries of life in their crude states, and severally prepare them for their own uses as well as they can. When there aiises a decided differentiation between the goveridng and the governed, some amount of transfer begins betv.'een tho.se inferior individuals, who, as workers, come directly in contact with the products of the earth, and those superior ones who exercise the higher functions— a transfer parallel to that which accompanies the differentiation of the ectoderm from the en- doderm. In the one case, as in the other, however, it is a transfer of products that are little if at all prepared, ami takes place di- rectly from the unit which obtains to the unit which consumes, without enleiiug iulj any general current. Passing to larger organisms — individual and social — we find the tirst advance upon this arrangement. Where, as among the com- pound Hydrozoa, there is an aggregation of or many such primitive groups as form Eydrce, or where, as in a Medusa, one of these groups has become of great size, there exist rude channels running through- out the substance of the body ; not how- ever, channels for the conveyance of pre- pared nutriment, but mere prolongations of the digestive cavilj', through which the crude chyle-aqueous fluid reaches the re- moter parts, and is moved backward and forward b}' the creature's contractions. Do we not find in some of the more advanced primitive communities an analogous condi- tion ? When the men, partially or fully united into one societ}', become numerous — when, as usually happens, the}' cover a surface of country not everywhere alike in its product.^ — when, more especiall}", there arise consid- erable cla.ssis that are not industiial ; some process of exchange and di.sliibution inevi- tably arises. Traversing here and there the earth's surface, covered by that vegetation on which human life depends, and inwliich, as we say, tiie units ot u .society are im- bedded, there are formed indefinite paths, along whieh some of the necessaries of life occasionally j>ass, to be bartend forotlieis which ptesenii}- come back iiioiig the same channels. Note, however, tlmt at fiist little else but crude commodities are thus trans- ferred — fruits, h«-li, pigs or cattle, skin.-*, lie. : there ate few, if any, manufaclureii jiroduds or ai tides prepared for consump lion. And note Inrllier, tiiat such distribution of these unpiei'aied necessaries of life as tiik( s ])lace is but occasioiial — goes on with a certain slo v. irregular rhythm. Ftiillier progress in the ( laboration and distribution of uuliiment or «)f commodities IS a nece.'i.saiy accompaniment of further differentiation of functions in the individual body or in the body politic. As fast as each organ of a living animal becomes confined to a special action, it must become dependent on the rest for all tho.se materials which its position and duty do not permit it to obtain for itself ; in the same way that, as fast as each particular class of a community be- comes exclusively occupied in jjroducing its own commodity, it must become dependent on the rest for the other commodities it needs. And, simultaneousl}', a more per- fectly-elaborated blood will result from a highly-specialized group of nutritive organs, severally adapted to prepare its different ele- ments ; in the same way that the stream of conmiodities circulating throughout a society will be of superior quality in proportion to the greater division of labor among the workers. Observe, also, that in titherca.se the circulating mass of nutritive materials, besides coming gradually to consist of better ingredients, also grows more complex. An increase in the number of the unlike organs which add to the blood their waste matters, and demand from it the different materials they severally need, implies a blood more heterogeneous in composition — an a priori conclusion which, according to Dr. Will- iams, is inductively confirmed by examina- tion of the blood throughout the v.-xrious grades of the animal kingdom. And simi- larly it is manifest that as fast as the division of labor among the classes of a community becomes greater, there must be an incrcasrng heterogeneity in the currents of meichimdise flowing throughout that community. The circulating mass of nutritive materials in individual organisms and in social organ- isms becoming alike better in the quality of its ingredients and more heterogeneous in composition, as the type of structure becomes FKOGKESS: ITS LAW A:NI) CAUSE. 2TJ higher, eveutually has iiddcil to it, in both cases another element, which is not itself nu- tritive, but facilitates the process of nutri- tion. We refer, iu the case of the individual organism, to the blood-dis-ks, and iu the case of the social organism, to niuney. This anal;)g3' has been observed by Jjiebig, who iu his " Familiar Letters on Chemistry," says : " Silver aud gold have to perform iu the organization of the state the same function as the blood corpuscles in the human or- ganization. As tliese round disks, without themselves taking an immediate share in (ho nutritive pfocess. are the medium, the essen- tial condition of the change of matter, of the production ot the heat, and of tlie force by whicii tlie temperature of the body is kept up and the motions of the blood aud all the juices are determined, so has gold become the medium of all activity in the life of the state. ' * And blood-corpuscles being like money in their functions, aud in the fact that they are not consumed in nutrition, he further poinis out, tliat the number of them which in a cousiderable interval flows through tlie great centres is enormous when compared wUii their absolute number ; just as the (juantity of money wliicii annually passes tiirough the great mercantile centres is enormous when compared with the total quantity of money in the kingdom. Nor is this all. Liebig has omitted the significant circum.stance, that only at a certain stage of organization dees this clement of the circulation make i is ap- pearance. Thioughout extensive divisions of the lower animals, the blood contains no cor- puscles ; and in societies ot low civilization there is no money. Thus far we have considered the analogy between the blood in a living body and the consumable and circulating commodities in the body politic. Let us now compare the appliances by which they are respectively distributed. We shall hud in the develop- ment of these appliances, parallelisms not less remarkal)le than those above set fivrth. Already we have shown that, as classes, wholesale and retail distributors discharge in a society the office which the vascular sys- tem discharges in an individual creature ; that they come into existence Liter than the other two great classes, as the vascular layer ap- pears later than the mucous and serous lay- ers ; and that they occupy a like intermedi- ate position. Here, however, it remains to be pointed out that a complete conception of the circulating system in a society includes not only the active human agents who propel the currents of commodities, and regulate their distribution, but includes also the channels of communication. It is the forma- tion and arrangement of these to which we now direct attention. Goiug back once more to those lower ani- mals in which there is found nothing but a partial diffusion, not of blood, but only of crude nutritive fluids, it is to be remarked that the channels through which the diffu- sion takes place are mere excavations through the half -organized substance of the body : thej' have no lining membranes, but are mere lacunce traversing a rude tissue. Now countries iu which civilization is but commencing display a like cuuditiou : there are no roads properly so called ; but the wil- derness of vegetal life covering the eartii's surface, is piel-ced by tracks, through which the distribution of crude commouliies tukcs place. And while in both casts the ads of distribution occur only at long intervals (the currents, after a pause, now setting toward a general centre, and now away from it), the transfer is in both cases slow aud ditlicult. But among other accompaniments of prog- ress, common to animals and societies, comes the formation of more detinite and complete channels of communication. Blood-vessels acquire distinct walls ; roads are fenced and gravelled. This advance is first seen in those roads or vessels that are nearest to the chief centres of distribution ; while the pe- ripheral roads aud peripheral vessels long continue iu their primitive states. At a yet later stage of developmenl, where comparal ive linish of structure is found tliroughoul the system as well as near the chief centres, there remains in both cases ihe difference, that the main channels are comparatively broad and straight, while the subordinate ones are narrow and tortuous in proportion to their remoteness. Lastly, it is to be remarked that there ulti- mately arise in the higher social organisms, as in the higher individual organisms, main channels of distribution still more distin- guished bj' their perfect structures, their comparative straightness, and the absence of those small branches which the minor chan- nels perpetually give off. And in railways we also see, for the lirst time in the social organism, a specialization with respect to the directions of the currents— a system of double channels conveying currents in oppo- site directions, as do the arteries and veins of a well-developed animal. These parallelisms in the evolutions and structures of the circulating systems intro- duce us to others iu the kinds and rates of the movements going on through them. In the lowest societies, as in the lowest creat- ures, the distribution of crude nutriment is by slow gurgitations and regurgitations. In creatures tliat have rude vascular systems, as in societies that are beginning to have roads and some transfer of commodities along them, there is no regular circulation in defi- nite courses ; but in.stead, periodical changes of the currents — now toward this point, and. now toward that. Through each part of an inferior moUusk's body the blood flows for a while in one direction, then stops, and flows in the opposite direction ; just as through a rudely-organized society the dis- tribution of merchandise is slowly carried on by great fairs, occurring in different locali- ties, to and from which the currents periodi- cally set. Only animals of tolerably com- plete organizations, like advanced communi- ties, are permeated by constant currents lh»t. 280 PROGRESS. ITS LAW AND CAUSE. are definitely directed, la livinp: liodies the local iind variable eurreiUs disappear wiiea tliere grow up great centres of circulation, generating more powerful currents by a rhythm wiiich ends in a quicli, reguhir pul- iation. And when in social l)odies there arise great centres of commercial activity, producing and exchanging large quantities of conunodilies, the rapid and continuous streams drawn in and emitted by these cen- tres subdue all minor and local circulations : the slow rhythm of fairs merges into the faster one of weekly markets, and in the chief cen- tres of distribution weekly markets merge into daily markets ; while in place of the languid transfer from place to place, taking place at first weekl}', then twice or thrice a week, we by and by g'-t daily transfer, and finally transfer many times a day — the orig- inal sluggish, irregular rhythm becomes a rapid, equable pulse. Mark, too, that in both cases the increased activity, like the greater perfection of struc- ture, is much less conspicuous at the pe- riphery of the vascular s^ stem. On main lines of railway we have, perhaps, a score trains in each direction daily, going at from thirty to fifty miles an hour ; as, through the great arteries, the blood rushes ra[)idly in succes- sive gushes. Along high roads there move vehicles conveying men and connnodities with much less, though still considerable speed, and with a much less decided rhythm , as, in the smaller arteries, the speed of the blood is greatly diminished, and the pulse less conspicuous. In parish-roads, narrow, less complete, and more tortuous, the rate of movement is further decreased and the rhythm scarcely traceable, as in the ultimate arteries. In those still more imperfect by- roads which lead from these parish roads to scattered farmhouses and cottages, the motion is yet slower and very irregular ; just as we find It in the capillaries. While along the field-roads, which, in their unformed, un- lenccd state, are typical of lacuiue the niove- liieut is the slowest, the most irregular and the most infrequent ; as it is, not only in the primitive lacuuce of animals and societies, but as it IS also in those lacinuje in which the vascular system ends among extensive fam- ilies of inferior creatures. Thus, then, we find between the distribut- ing systems of living bodies and the distrib- uting systems of bodies politic, wonderfullj' close parallelisms. In the lowest forms of individual and social organisms there exist ueilher prepared nutritive matters nor dis- tributing appliances ; and in both, these, arising as necessary accompaniments of the differentiation of parts, approach perfection as this differentiation approaches complete- ness. In animals as in societies, the distrib- uting agencies begin to show themselves at the same relative periods, and in the same relative positions. In the one, as in the other, the nutritive materials circulated are at first crude and simple, gradually become better elaborated and more heterogeneous, and have eventually added to them a new clement facilitating the nutritive processes. The channels of communication pass through similar pha.scs of development, which bring them to analogous forms. And the direc- tions, ihylhms, and rates of circulation pro- gress by like steps to like final conditions. We come at length to the nervous system. Having noticed the primary differentiation of societies into the governing and governed classes, and observed its analogy to the dif- ferentiation of the two primary tissues which respectively develop into organs of external action and organs of alimentation ; having noticed some of the leading analogies be- tween the development of industrial arrange- ments and that of the alimentary apparatus ; and having, above, more fully traced the analogies between the distributing sjslems, social and individual, we have now to com- pare the appliances by which a society, as a whole, is regulated, with those by which the movements of an individual creature are regulated. We shall find here ])arallelisnig equally striking with those already detailed. The class out of which governmental' organization originates, is, as we have said, analogous in its relations to the ectoderm of the lowest animals and of embryonic forms. And as this primitive membrane, out of which the nervo-muscular system is evolved, must, even in the fiist stage of its differentia- tion, be slightly distinguished from the rest by that greater impressibility and contractil- ity characterizing the organs to which it gives rise ; so, in that superior class which is eventually transformed into the directo- cxecuiive system of a society (its legislative and defensive appliances), does there exist in the beginning a larger endowment of the capacities required for these higher social functions. Always, in rude assemblages of men, the strongest, most courageous, and most sagacious become mlers and leaders ; and in a tribe of some standing this results in the establishment of a dominant class, characterized on the average by those mental and bodily qualities which fit^them for delib- eration and vigorous ctmibined action. Thus that greater impressibility and contractility, which in the rudest animal types characterize the units of the ectoderm, characterize also the units of the primitive social ectoderm ; since impressibility and contractility are the respective roots of intelligence and strength. Again, in the unmodified ectoderm, as we see \i in the Uyclra, the units are all endowed both with impressibility and contractility ; but as we ascend to higher types of organi- zation, the ectoderm differentiates into classes of units which divide those two functions between them : some, becoming exclusively impressible, cease to be contractile ; while some, becoming exclusively contractile, cease to be impressible. Similarly with societies. In an aboriginal tribe, the direc- tive and executive functions are diffused in a mingled form throughout the whole gov- erning class. Each minor chief commands those under him, and, if need be, himself coreces them inlo obedience. The council PROGRESS: ITS LAW AND CAUSE. 381 of chiefs itself carries out on the battle-field its owu decisions. The head chief not only makes laws, but administers justice with his own hands. In larger and more settled com- munities, however.the directive and executive agencies begin to grow distinct from each other. As fast as his duties accumulate, the head chief or king confines himself more and more to directing public affairs, and leaves the execution of his will to others : he de- pules others to enforce submission, to inflict punishments, or to carry out minor acts of offence aud defence ; and only on occasions when, perhaps, the safety of the society and his own supremacy are at stake, does he begin to act as well as direct. As this diifer- enliatiou establishes itself, the characteristics of tlie ruler begin to change. No longer, as in an aboriginal tribe, the strongest and most daring man, the tendency is for him to be- come the man of greatest cunning, foresight, and skill in the management of others ; for in societies that have" advanced beyond the first stage it is chiefly sucli qualities that insure success in gaining siipren)e power, and holding it against internal aud external enemies. Tlius that member of the govern- ing class who comes to be the chief directing agent, and so plays the sanie part that a rudimentary nervous centre does in an un- folding organism is usually one endowed with some superiorities of nervous organiza- tion. In those somewhat larger and more com- plex conunuuities possessing, perhaps, a sep- arate military class, a priesthood, and dis- persed masses of population requiring local control, there necessarily grow up subordi- nate governing agents ; who, as their duties accumulate, severally become more directive and less executive in their characters. And ■when, as commonly happens, the king l)e- gins to collect round himself advisers who aid him by communicating information, pre- paring subjects for his judgment, and issuing his orders, we may say that the form of organization is comparable to one very gen- eral among inferior types of animals,in which there exists a chief ganglion with a few dis- persed minor ganglia under its control. The analogies between the evolution of governmental structures in societies, and the evolution of governmental structures in living bodies, are, however, more strikingly dis- played during the formation of nations by the coalescence of small communities — a process already shown to be, in several re- spects, parallel to the development of those creatures that primarily consist of many like segments. Among other points of commu- nity between the successive rings which make up the body in the lower Articulata, is the possession of similar pairs of ganglia. These pairs of ganglia, though united together by nerves, are very incompletely dependent on any general controlhng power. Hence it re- sults that when the body is cut in two, the hinder part continues to move forward under the propulsion of its numerous leus ; and that when the chain of ganglia has been divided without severing the body, the hind limbs may be seen trying to propel the body in one direction, while the fore limbs are trying to propel it in another. Among the higher Articulata, however, a number of the anterior pairs of ganglia, besides growing larger, unite in one mass ; and this great cephalic ganglion, becoming the co-ordinator of all the creature's movements, there no longer exists much local independence. Now may we not in the growth of a consoli- dated kingdom out of petty sovereignties or baronies, observe analogous changes ? Like the chiefs and primitive rulers above de- scribed, feudal lords, exercising supreme power over their respective groups of retain- ers, discharge functions analogous to those of rudimentary nervous centres ; and we know that at first they, like their analogues, are distinguished by superiorities of directive nufl executive organization. Among these local governing centres there is, in early feudal times, very little subordination. They are in frequent antagonism ; tliey are indi- vidually restrained chiefly by the influence cf large parties in their own class, and are but imperfectly and irregularly subject to that most powerful member of their order who has gained the position of head suzerain or king. As the growth and organization of the society progresses, these local directive centres fall more and more under the control of a chief directive centre. Closer commer- cial union between the several segments is accompanied by closer governmental union ; and these minor rulers end in being little more than agents who administer, in their several localities, the laws made by the supreme ruler ; just as the local ganglia above described eventually become agents which enforce, in their respective segments, the orders of the cephalic ganglion. The parallelism holds still further. "We remaiked above, when speaking of the rise of aboriginal kings, that in pioportion as their territories aud duties increase, they are obliged not only to perform their executive functions by deputy, but also to gather round themselves advisers to aid them in their directive functions ; aud that thus, in place of a solitary governing unit, there grows up a group of governing units, comparable to a ganglion consisting of many cells. Let us here add, that the advisers aud chief otficers who thus form the rudiment of a ministry, tend from the beginning to exercise a certain control over the ruler. By the information they give and the opinions they express, they sway his judgment and affect his commands. To this extent he therefore becomes a chan- nel through which are communicated the directions originating with them ; and in course of time, when the advice of ministers becomes the acknowledged source of his actions, the king assumes very much the character of an automatic centre, reflecting the impressions made on him from without. Beyond this complication of governmental structure many .societies do not progress ; but in some a further development takes 283 PROGRESS: ITS LAW A^TD CAUSE. place. Otir own case best illustrates this further development and its further analo- gies. To kings and their ministries have been added, in England, other great directive centres, exercising a control which, at first small, has been gradually becoming predom- inant : as Mith the great governing ganglia that especially distinguish the highest classes of living beings. Strange as the assertion will be thought, our houses of parliament discharge in the social economy, functions that are in sundry respects comparable to those discharged by the cerebral masses in a vertebrate animal. As it is in the nature of a single ganglion to be affected only by special stimuli from particular parts of the bod}-, so it is in the nature of a single ruler to be swayed in his acts by exclusive person- al or class interests. As it is in the nature of an aggregation of ganglia, connected with the primary one, to convey to it a greater variety of influences from more numeruus organs, and thus to make its acts conform to more numerous re(iuirements, so it is in the nature of a king surrounded by sub- sidiary controlling powers, to adapt his rule to a greater number of public exigencies. And as it is in the nature of those great and latest-developed ganglia which distinguish the higher animals, to interpret and combine the multiplied and varied impressions con- veyed to them from all parts of the system, and to regulate the actions in such way as duly to regard them all ; so it is in the nature of those great and latest-developed legislative bodies which distinguish the most advanced societies, to interpret and combine the wishes and complaints of all classes and localities, and to regulate public affairs as much as possible in harmony with the general wants. The cerebrum co-ordinates the countless heterogeneous considerations w^hich affect the present and future welfare of the indi- vidual as a whole ; and the legislature co- ordinates the countless heterogeneous con- siderations which affect the immediate and remote welfare of the whole community. We may describe the office of the brain as that of averaging the interests of life, physi- cal, intellectual, moral, social ; and a good brain is one in which the desires answering to these respective interests are so balanced, that the conduct they jointly dictate, sacri- fices none of them. Similarly, we may de- scribe the office of a parliament as that of averaging the interests of the various classes in a community ; and a good parliament is one in which the parties answering to these respective interests are so balanced, that their united legislation concedes to each class as much as consists with the claims of the rest. Besides being comparable in their duties, these great directive centres, social and individual, are comparable in the pro- cesses by which their duties are discharged. It is now an acknowledged truth in psy- chology, that the cerebrum is not occupied with direct impressions from without, but with the ideas of such impressions : instead of the actual sensations produced in the body, and directly appreciated by the sensory ganglia or primitive nervous centres, the cer- ebrum receives only the representations of these sensations ; and its consciousness is called vejrreHentative consciousness, to dis- tinguish it from the original or presentatice consciousness. Is it not signiticant that we have hit on the same word to distinguisli the function of our House of Commons V We call it a representative body, because the in- terests with which it deals — the pains and pleasures about which it consults— are not directly presented to it, but represented to it by its various members ; and a debate is a conflict of representations of the evils or benefits likely to follow from a proposed course — a description which applies with equal truth to a debate in the individual con- sciousness. In both cases, too, these great governing masses fake no part in the execu- tive functions. As, after a conflict iu the cerebrum, those desires which finally pre- dominate act on the subjacent ganglia, and through their instrumentality determine the bodily actions ; so the parties which, after a parliamentary struggle, gain the victory, do not themselves carry out their wishes, but get them carried out by the executive divi- sions of the government. The fulfilment of all legislative decisions still devolves on the original directive centres — the impulse pass- ing from the parliament to the ministers, and from the ministers to the king, in whose name everything is done ; just as those smaller, first developed t,Mnglia, which in the lowest vertebrata are the chief controlling agents, are still, in the brains of the higher vertebrata, the agents through which the dictates of the cerebrum are worked out. Moreover, in both cases these original centres become increasingly automatic. In the developed vertebrate animal, they have little function beyond that of conveying im- pressions to, ana executing the determina- tions of. the larger centres. In our highly organized government, the monarch has long been lapsing into a passive agent of parlia- ment ; and now, ministers are rapidly falling into the same position. Nay, between the two cases there is a par- allelism, even in respect of the exceptions to this automatic action. For in the individual creature, it happens that under circumstan- ces of sudden alarm, as from a loud sound close at hand, an unexpected object start- ing up in front, or a slip from insecure foot- ing, the danger is guarded against by some quick involuntary jump, or adjustment of the limbs, that takes place before there is time to consider the impending evil, and take deliberate measures to avoid it : the rationale of which is, that these violent im- pressions produced on the senses are reflected from the sensory ganglia to the spinal cord and muscles, without, as in ordinary cases, first passing through the cerebrum. In like manner, on national emergencies, calling for prompt action, the king and ministry, not having time to lay the matter before the great deliberative bodies, themselves issue PROGRESS: ITS LAW AXD CAUSE. 283 commands for the requisite movements OT precautions : the pritnitive, and now almost automiUic, directive centres, resume for a moment their original uncontrolled power. And tbon. strangest of all, observe that in either case tliero is an after process of approval or disapproval. The individual on recovering from his automatic start, at once contem[)late3 the cause of his fright ; and, according to the case, concludes that it was well he moved as he did, or condemns himself for his groundless alarm. In like manner, the deliberative powers of the state discuss, as soon as may be, the unauthorized acts of the executive powers ; and. deciding that the reasons were or were not sutttcieut, grant or withhold a bill of indemnitj'.* Thus far in comparing the governmental organization of the l)ody politic with tliat»of an mdividual body, we have considered only the respective co-ordinating centres. We have yet to consider the channels through which these co-ordiuatmg centres receive in- formation and convey commands. In the simplest societies, as in the simplest organ- isms, there IS no " internuncial apparatus," as Hunter styled the nervous system. Con- sequently, impressions can be but slowly propagated from unit to unit throughout tho whole mass. The same progress, however which, in animal organization, shows itself in the establishment of ganglia or directive centres shows itself also in the establishment of nerve-threads, through which the ganglia receive and convey impressions, and so con- trol remote organs. And in societies the like eventually takes place. After a long period during which the directive centres communicate with various parts of the society through other means, there at last comes into existence an " inter- nuncial apparatus," analogous to that found in individual bodies. The comparison of telegraph-wires to nerves is familiar to all. It applies, however, to an extent not com- monly suppised. We do not refer to the near alliance between the subtle forces em- ployed in the two cases ; though it is now held that the nerve-force, if not literally elec- tric, is still a special form of electric action, related to the ordinary form much as mag- netism is. But we refer to the structural arrangements of our telegraph - system. Thus, throughout the vertebrate sub-king- dt»m, the great nerve-bundles diverge from the vertebrate axis, side by side with the great arteries ; and similarly, our groups of telegraph-wires are carried along the sides of • It may he well to warn the reader a^inst an erroi fallen iiuo by one who criiicised this essay on its first uublication— the error of BuppoBJDg that the analogy nure intended to be drawn lu a epecific analogy be- twci-n the ortjanization of society in England and the bnniaii organization. As said at the outset, no such epecitic analogy e.xists. The above parallel is one be- tween the mo8t -developed gyetemij of governineBtal organization, individual and social ; and the vertebratt type is instanced merely as exhibiting this most-de- veloped system. If any specific comparison wer« made', which it cannot rationally be, it would be tc some much lower vertebrate form than the human. our railways. The most striking parallel- ism, however, remains. Into each great bundle of nerves, as it leaves the axis of tho body along with an artery, there enters :i branch of the sympathetic nerve ; which branch, accompanying the artery through- out its ramifications, has the function ol regulating its diameter and otherwise con trolling the flow of blood through it accord- ing to the local retiuirements. Analogously, in the group of telegraph wires running alongside each railway, Ihere is one for the purpose of regulating the traffic— for retard- ing or expediting the flow of passengers and commodities, as the local conditions demand. Probably, when our now rudimentary tele- graph-system is fully developed, other anal- ogies will be traceable. Such, then, is a general outline of the evi- dence which justities, in detail, the compari- son of societies to living organisms. That they gradually increase in mass ; that they become little by little more complex ; that at the same time their parts grow more mutu- ally dependent, and that they continue to live and grow as wholes, while successive generations of their units appear and disa,p- pear, are broad peculiarities which bodies politic display, in common with all living bodies ; and in which they and living bodies differ from everything else. And on carry- ing out the comparison in detail, we find that these major analogies involve many minor analogies, far closer than might have been expected. To these we would gladly have added others. We had hoped to say something respecting the dillerent types of social organization, and something also on social metamorphoses ; but we have reached our assigned limits. VI. THE USE OF ANTHROPOMOnPniSM. That long fit of indignation which seizes all generous natures when in youth they be- gin contemplating human affairs, having fairly spent itself, there slowly grows up a perception that the institutions, beliefs, and forms so vehemently condemned are not wholly bad. This reaction runs to various lengths. In some, merely to a comparative contentment with the arrangements under which they live. In others to a recognition of the fitness that exists between each people and its government, tyrannical as that may be. In some, again, to the conviction that, hateful though it is to us, and injurious as it would l)e now, slavery was once beneficial —was one of the necessary pha.ses of human progress. Again, in others, to the suspicion that great benefit has indirectly arisen from the perpetual warfare of past times ; insur- ing as this did the spread of the strongest races, and so providing good raw material for civilization. And in a few this reaction ends in the generalization that all modes of human thought and action subserve, in the times and places in which they occur, some useful function : that though bad in the ab- stract, they are relatively good — arc the best 284 PROGRESS: ITS LAW AND CAUSE. which tlie thcu existing conditions admit of. A starlliug couclusiun to -which this faith in the essenlial beneficence of things com- mits us, is that tiie leiigious creeds tlirongli wliich nianliiud successively pass, are, dur- ing the eras in which they are sevuTally lieid, the best that could be held ; and tlial this is true, not only of the latest and nioht relined creeds, but of all, even to the earliest and most gross. Those who reganl nuri's faillis as given to them from without— as liaving origins either directly divine or diabolicaf, and who, considering their own as the sole example of the one, class all the rest under the other, will liiink this a very hh(;cking opinion. I can imagine, too, that many of those who have al)and.)ned current theologies and now regard religions as so many natural products of human nature— men who, hav- ing lost that aniaL'nnism towaid their old creed which they felt while shaking them- selves free from it, can now see ttiat it was highly beneficial to past generations, and is beneficial still to a large part of mankind ; I can imagine even these hardly pmpared to admit that all religions, down to tlie lowest fetichism, have, in their places, fuKiiied use- ful functions. If such, however, will con- sistently develop their ideas, they will find this inference involved. For if it be true that humanity in its cor- popdfe as well as in its individual aspcit, is a growth and not a manufacture, it is ob- vious that during each plia.se men's theolo- gies, as well as their political and social ar- rangements, must be determined into such forms as the conditions require. In the one case as in the other, by a tentative process, things fiom time to time resettle tlmmselves in a way that best consists with national equilibrium. As out of plots and the strug- gles of chieftains, it continually results that the strongest gets to the top, and by virtue of his proved superiority insures a period of quiet, and gives society time to grow ; as out of incidental expedients there periodically arise new divisions of labor, which get per- manently established only by serving men's wants better than the previous arnauge- ments did ; so, the creed which each period evolves is one more in conformity with tlie needs of the time tlian the cjeed which pre- ceded it. Not to rest in general statements, however, let us consider why this must be so. Let us fee wliether, in the genesis of men's ideas of deity, there is not involved a necessity to conceive of deity under the as- pect most influential with them. It is now generally admitted that a more or less idealized humanity is the form which every conception of a personal God must take. Anthropomorphism is an inevitable result of the laws of thought. We cannot take a step toward cous4ru'jtiug an idea of God witliout the ascription of human attri- butes. We cannot even speak of a divine will without assimilating tlie divine natuie to our own ; lor we know nothing of volition save as a propertj' of our own minds. While this auihioDi.moiphic tendency, or rather necessity, is manifested by themselves with sufficient grossness — a grossness that is offensive to those more advanced — Christians are indignant at the still grosser manifesta- tions of it seen among uncivilized men. Cer- tainly, such conceptions as those of some Polynesians, who believe that their gods feed on the souls of the dead, or as those of the Greeks, who ascribed to the personages of their Pantheon every vice, from domestic ( annibalism downward, are repulsive enough. But if, ceasing lo regard these notions from the outside, we more philosophically regard then: from the inside — if we consider how they looked lo believers, and observe the relationships they bore to the natures and needs of such, we shall begin to think of then, with scuiie tolerance. The question to be answeied is, wlielher these beliefs were beneficent in their effecls on those who held them ; not whether they would be beneficent for us, or for perfect men ; and to this ques- tion the answer must be that while absolutely bad, (hey were relatively good. For it is not obvious that the savage man will be most elTettiially controlled by his feais of a savage deity '! Must it not happen, that if his nature requires great restraint, the f-upposed consequences of transgression, to be a check upon liim, must be proportion- ately terrible ; and for these to be proportion- ately teriible, must not his god be conceived as proportionately cruel and revengeful ? Is it not well that the tieacherous, thievish, lying Hindoo should believe in a hell where the wicked are boiled in caldrons, rolled down mountains biistling with knives, and sawn asundtr between flaming iron posts? And that there may be provided such a hell, is it not needful that he should believe in a divinity delighting in human immolations and the self torture of fakirs? Does it not seem clear that during the earlier ages in Christendom, wlien men's feelings were so hard that a holy father could describe one of the delights of heaven to be the contemplation of the torments of the damned — does it not i^cem clear that while the general nature was so unsympathetic, there needed, to keep men in order, all the prospective tortures de- scribed by Dante and a deity implacable enough to inflict them ? And if, as we thus see, it is weli for the savage man to believe in a savage god, then we may also see the great usefulness of this anthropomorpliie tendency ; or, as before said, necessity. We have in it another illus- tration of that essential beneficence of things visible everywhere throughout nature. From this inability under which we labor to conceive of a deity save as some idealization of ourselves, it inevitably results that in each age, among each people and to a great ex- tent in each individual, there must arise just that concepli»n of deity best adapted to the needs of the case. If being violent and bloodthirsty the nature be one calling for stringent control, it evolves the idea of a ruler still more violent and bloodthirsty, and fitted to afford this control. When by ages of so- PROGRESS: ITS LAW AND CAUSE. 385 dal discipline the nature has been parlially humanized, and the degree of restraint re- quired has became less, the diabolical char- acteristics before ascribed to the deity cease to be so predominant in the conception of him. And gmdualiy, as all need for n. straint disappears, this conception approxi- mates toward that of a purely beneficent necessity. Thus, man's constitution is in this, as in other respects, self adjusting, self-balancing. The mind itself evolves a compensating check to its own movements, varying always in proportion to the require- ment. Its centrifugal and its centripetal forces are necessarily in correspondence, be- cause the one generates the other. And so we find that the forms of both religious and secular rule follow the same law. As an ill- controlled national character produces a de- spotic terrestrial government, so also does it produce a despotic celestial government — the one acting through the senses, the other through the imagination ; and in the con- verse case the same relationship holds good. Organic as this relationship is in its origin, no aitificial interference can permanently affect it. Whatever perturbations an exter- nal agency may seem to produce, they are soon neutralized in fact, if not in appearance. 1 was recently struck with this in reading a missionary a(;count of the " gracious visita- tions of the Holy Spirit at Vewa, " one of the Fejee Islands. Describing a " penitent meeting," the account says : " Certainly the feelings of the Vewa peo- ple were not ordinary. They literally roared for hours together for the disquie- tude of their souls. This frequently leimi- nated in fainting from exhaustion, which was the only respite some of them had till they found peace. They no sooner recovered their consciousness than they prayed them- selves tirst into an agony, then again into a state of entire insensibility." Now these Fejee Islanders are the most savage of all the uncivilized races. They are given to cannibalism, infanticide, and human sacrifices ; they are so bloodthirsty and so treacherous that members of the same family dare not trust each other ; and, in harmony with these characteristics, they have for their aboriginal god, a serpent. Is it not clear, then, that these violent emoticna which the missionaries describe, these ter- rors and agonies of despair which they re- joiced over, were nothing but the worship of the old god under a new name ? It is not clear that these Fejees had simply under- stoo