n LEWIS H. MORGAN. THE POPULAR SCIENCE MON^THLY. CONDUCTED BY E. L. AND W. J, YOUMANS. VOL. XVIII. NOVEMBER, 1880, TO APRIL, 1881. NEW YORK : D. APPLETON AND COMPANY, 1, 3, AND 5 BOND STREET. 1881. COPYRIGHT BY D. APPLETON AND COMPANY. ISSl. /Of 57 THE POPULAR SCIENCE MONTHLY. NOVEMBER, 1880. THE DEVELOPMENT OF POLITICAL INSTITUTIONS.* By HEEBERT SPENCER. I. PEELIMINARY. THOUGHT and feeling can not be completely dissociated. Each emotion has a more or less distinct framework of ideas ; and each group of ideas is more or less suffused with emotion. There are, however, great differences between their degrees of combination under both of these aspects. We have some feelings which are vague from lack of intellectual definition ; and others to which clear shapes are given by the associated conceptions. At one time our thoughts are distorted by the passion running through them ; and at another time it is difficult to detect in them a trace of liking or . disliking. Manifestly, too, in each particular case these components of the men- tal state may be varied in their proportions. The ideas being the same, the emotion joined with them may be greater or less ; and it is a familiar truth that the correctness of the judgment formed de- pends, if not on the absence of emotion, still, on that balance of emo- tions which negatives excess of any one. Especially is this so in matters concerning human life. There are two ways in which men's actions, individual or social, may be re- garded. AVe may consider them as groups of phenomena to be ana- lyzed, and the laws of their dependence ascertained ; or, considering them as causing pleasures or pains, we may associate with them appro- bation or reprobation. Dealing with its problems intellectually, we * The references to facts cited in this article and succeeding ones will be given when the articles reappear in their permanent shape. Allusions here and there occurring in them, to matters not before the reader, must be understood as consequent on their conti- nuity with writings already published. TOL. XVIII. — 1 2 THE POPULAR SCIENCE MONTHLY. may regard conduct as always the result of certain forces ; or dealing with its problems morally, and considering its outcome as in this case good and in that case bad, we may allow now admiration, and now indignation, to fill our consciousness. Obviously, it must make a great difference in our conclusions whether, as in the one case, we re- gai'd men's doings as those of alien creatures, which it merely concerns us to understand ; or whether, as in the other case, we regard them as the doings of creatures like ourselves, with whose lives our own lives are bound up, and whose behavior arouses in us, directly and sympa- thetically, feelings of love and hate. In " The Study of Sociology," I have described in detail the vari- ous perversions produced in men's judgments by their emotions. Ex- amjjles are given showing how fears and hopes betray them into false estimates ; how impatience prompts unjust condemnations ; how in this case antipathy, and in that case sympathy, distorts belief. The truth that the bias of education and the bias of patriotism severally warp men's convictions, is enforced by many illustrations. And it is pointed out that the more special forms of bias — the class bias, the political bias, the theological bias — each produces a strong predisposi- tion toward this or that view of public affairs. Here let me emphasize the conclusion that in pursuing our socio- logical inquiries, and especially those on which we are now entering, we must, as much as possible, exclude whatever emotions the facts are calculated to excite, and attend solely to the interpretation of the facts. There are several groups of phenomena, in contemj^lating which either contempt, or disgust, or indignation, tends to arise, but must be restrained. Instead of passing over as of no account, or else regarding as purely mischievous, the superstitions of the primitive man, we must inquire what part they play in social evolution ; and must be pre- pared, if need be, to recognize their usefulness. Already we have seen that the belief which prompts the savage to- bury valuables with the corpse and carry food to the grave has a natural genesis ; that the propitiation of plants and animals and the "worship of stocks and stones " are not gratuitous absurdities ; and that slaves are sacri- ficed at funerals in pursuance of an idea which seems rational to unin- structed intelligence. Presently we shall have to consider in what way the ghost-theory has operated politically ; and, if we should find reason to conclude that it has been an indispensable aid to social evo- lution, we must be ready to accept the conclusion. Knowledge of the miseries that have for countless ages been everywhere caused by the antagonisms of societies must not prevent us from recognizing the all-important part which these antagonisms have played in civilization. Shudder as we must at the cannibalism which all over the world in early days was a sequence of war ; shrink POLITICAL INSTITUTIONS— PRELIMINARY. 3 as we may from the thought of those immolations of prisoners which have, tens of thousands of times, followed battles between wild tribes ; read as we do with horror of the pyramids of heads and the whitening bones of slain peoples left by barbarian invaders ; hate, as we ought, the militant spirit which is even now among ourselves prompting base treacheries and brutal aggressions— we must not let our feelings blind us to the proofs we meet with, that intersocial con- flicts have furthered the development of social structures. Moreover, dislikes to governments of certain kinds must not pre- vent us from seeing their fitnesses to their circumstances. Though rejecting the common idea of glory, and declining to join soldiers and schoolboys in applying the epithet " great " to conquering des- pots, we detest despotism ; though we regard their sacrifices of their own peoples and of alien peoples in pursuit of universal dominion as gigantic crimes — we must yet recognize the benefits occasionally aris- ing from the social consolidations they achieve. Neither the massa- cres of subjects which Roman emperors directed, nor the assassinations of relatives habitual among potentates in the East, nor the impover- ishment of whole nations by the excessive exactions of tyrants, must so prejudice us as to prevent appreciation of the benefits which have, under cei'tain conditions, resulted from the unlimited power of the supreme man. Nor must the remembrances of torturing implements, and oubliettes, and victims built into walls, shut out from our minds the evidence that abject submission of the weak to the strong, how- ever unscrupulously enforced, has in some times and places been ne- cessary. So, too, Avith the associated ownership of man by man. Absolute condemnation of slavery must be withheld, even if we accept the tra- dition repeated by Herodotus, that to build the Great Pyramid relays of a hundred thousand slaves toiled for twenty years ; or even if we find it true that, of the serfs compelled to work at the building of St. Petersburg, three hundred thousand perished. Though aware that the unrecorded sufferings of men and women held in bondage are beyond imagination, we must, nevertheless, preserve a mental state receptive of such evidence as there may be that benefits have resulted. In brief, trustworthy interpretations of social arrangements imply an almost passionless consciousness. Though feeling can not and ought not to be excluded from the mind when otherwise contemplating them, yet it ought to be excluded when contemplating them as natural phenomena to be understood in their causes and effects. Maintenance of this mental attitude will be furthered by keej^ing before ourselves the truth that in human actions the absolutely bad may be relatively good, and the absolutely good may be relatively bad. Though it has become a commonplace that the institutions under 4 THE POPULAR SCIENCE MONTHLY. which one race prospers will not answer for another, the recognition of this truth is by no means adequate. Men who have lost faith in "paper constitutions," nevertheless advocate a policy toward inferior races, implying the belief that civilized social forms can with advan- tage be imposed on uncivilized peoples ; that the arrangements which seem to us vicious are vicious for them ; and that they would benefit by institutions — domestic, industrial, or political — akin to those which we find beneficial. But acceptance of the truth that the type of a soci- ety is determined by the natures of its units, forces on us the corollary that a regime intrinsically of the lowest may yet be the best possible under primitive conditions. Otherwise stating the matter, we must not substitute our developed code of conduct, which predominantly concerns private relations, for the undeveloped code of conduct which predominantly concerns pub- lic relations. Now that life is generally occupied in peaceful inter- course with fellow-citizens, ethical ideas refer chiefly to actions be- tween man and man ; but, in early stages, while the occupation of life was mainly in conflicts with adjacent societies, such ethical ideas as existed referred almost wholly to intersocial actions : men's deeds were judged by their direct bearings on tribal welfare. And since preservation of the society takes precedence of individual preserva- tion, as being a condition to it, we must, in considering social phe- nomena, interpret good and bad rather in their earlier senses than in their later senses ; and so must regard as relatively good that which furthers survival of the society, great as may be the suffering inflicted on individuals. Another of our ordinary conceptions has to be much widened be- fore we can rightly interpret political evolution. The words "civil- ized" and "savage" must have given to them meanings differing greatly from those which are current. That broad contrast usually drawn wholly to the advantage of the men who form advanced na- tions, and to the disadvantage of the men who form single groups, a better knowledge obliges us profoundly to qualify. Characters are to be found among rude peoples which compare well with those of the best among cultivated peoples. With little knowledge, and but rudi- mentary arts, there in some cases go virtues which might shame those among ourselves whose education and polish are of the highest. Surviving remnants of some primitive races in India have natures in which truthfulness seems to be organic. Not only to the surround- ing Hindoos, higher intellectually and relatively advanced in culture, are they in this respect far superior, but they are superior to Europe- ans. Of certain of these Hill peoples it is remarked in India that their assertions may always be accepted with perfect confidence ; which is more than can be said of diplomatists who intentionally delude, or ministers who make false statements concerning cabinet transactions. POLITICAL INSTITUTIONS— PRELIMINARY, 5 As having this trait may be named the Santals, of whom Hunter says, " They were the most truthful set of men I ever met " ; and, again, the Sowrahs, of whom Shortt says : " A pleasing feature in their character is their complete truthfuhiess. They do not know how to tell a lie." Not- withstanding their sexual relations of a primitive and low type, even the Todas are described as considering " falsehood one of the worst of vices." Though Metz says that they practice dissimulation toward Europeans, yet he recognizes this as a trait consequent upon their in- tercourse with Europeans ; and this judgment coincides with one given to me by an Indian civil servant concerning other Hill tribes, originally distinguished for their veracity, but who are rendered less veracious by contact with the whites. So rare is lying among these aboriginal races when unvitiated by the " civilized," that, of those in Bengal, Hunter singles out the Tipperahs as " the only Hill tribe in which this vice is met with." Similarly in respect of honesty, some of those peoples classed as inferior read lessons to those classed as superior. Of the Todas just named, ignorant and degraded as they are in some respects, Harkness says, " I never saw a people, civilized or uncivilized, who seemed to have a more religious respect for the rights of meum and tuum.^'' The Marias (Gonds), " in common with many other wild races, bear a singular character for truthfulness and honesty." Among the Khonds "the denial of a debt is a breach of this principle, which is held to be highly sinful. 'Let a man,' say they, 'give up all he has to his creditors.' " The Santal, who " never thinks of making money by a stranger," prefers to have " no dealings with his guests ; but when his guests introduce the subject he deals with them as honestly as he would with his own people ... he names the true price at first." The Lepchas " are wonderfully honest, theft being scarcely known among them." And the Bodo and Dhimals are "honest and truthful in deed and word." Colonel Dixon dilates on the "fidelity, truth, and hon- esty " of the Carnatic aborigines ; and they show " an extreme and almost touching devotion when put upon their honor." And Hunter asserts of the Chakmas, that "crime is rai-e among these primitive people. . . . Theft is almost unknown." So it is, too, with the general virtues of these and sundry other uncivilized tribes. The Santal "possesses a happy disposition," is " sociable to a fault," " courteous," but " at the same time firm and free from cringing" ; and, while the "sexes are greatly devoted to each other's society," the women are "exceedingly chaste." The Bodo and Dhimals are "full of amiable qualities, and almost entirely free from such as are unamiable." The Lepcha, " cheerful, kind, and patient," is described by Dr. Hooker as a most "attractive com- panion " ; and Dr. Campbell gives " an instance of the effect of a very strong sense of duty on this savage." In like manner, from accounts of certain of the Malayo-Polynesian societies, and certain of the Pap- 6 THE POPULAR SCIENCE MONTHLY. uan societies, may be given instances showing in high degrees sundry traits which we ordinarily associate only with a human nature that has been long subject to the discipline of civilized life and the teach- ings of a superior religion. One of the latest testimonies is that of Signor D'Albertis, who describes certain New Guinea people he visited (near Yule Island) as strictly honest, " very kind," "good and peace- ful," and who, after disputes between villages, "are as friendly as before, bearing no animosity " ; but of whom the Rev. W. G. Lawes, commenting on Signor D'Albertis's communication to the Colonial Institute, says that their good-will to the whites is being destroyed by the whites' ill-treatment of them : the usual history. Contrariwise, in various parts of the world, men of several types yield proofs that societies relatively advanced in organization and culture may yet be barbarous in their ideas, sentiments, and usages. The Feejeeans, described by Dr. Pickering as among the most intelli- gent of unlettered peoples, are among the most ferocious. " Intense and vengeful malignity strongly marks the Feejeean character." Lying, treachery, theft, and murder are with them not criminal, but honor- able ; infanticide is immense in extent ; strangling the sickly habitual ; and they sometimes cut up while alive the human victims they are going to eat. Nevertheless they have a " complicated and carefully conducted political system " ; well-organized military forces ; elaborate fortifications ; a developed agriculture with succession of crops and irrigation ; a considerable division of labor ; a separate distributing agency with incipient currency ; and a skilled industry which builds canoes that carry three hundred men. Take again an African society, Dahomey. We find there a finished system of classes, six in number ; complex governmental ari'angements with oflicials always in pairs ; an army divided into battalions, having reviews and sham-fights ; prisons, police, and sumptuaiy laws ; an agriculture which uses manure and grows a score kinds of plants ; moated towns, bridges, and roads with turnpikes. Yet along with this comparatively high social develop- ment there goes what we may call organized criminality. Wars are made to get skulls with which to decorate the royal palace ; hundreds of subjects are killed when the king dies ; and five hundred are an- nually slaughtered to carry messages to the other woi-ld. Described as cruel and bloodthirsty, liars and cheats, the people are " void either of sympathy or gratitude, even in their own families," so that "not even the appearance of affection exists between husband and wife, or between parents and children." The New World, too, furnished, when it was discovered, like evidence. Having great cities of one hundred and eighty thousand houses, the Mexicans had also cannibal gods, whose idols were fed on warm, reeking, human flesh, thrust into their mouths — wars being made purposely to supply victims for them ; and with skill to build stately temples, big enough for ten thousand men to dance in their courts, there went the immolation of twenty- POLITICAL INSTITUTIONS— PRELIMINARY. 7 five hundred persons annually, in Mexico and adjacent towns alone, and of a far greater number throughout the country at large. Simi- larly, in the populous Central American states, sufficiently civilized to have a developed system of calculation, a regular calendar, books, maps, etc., there were like extensive sacrifices of prisoners, slaves, chil- dren, whose hearts were torn out and offered palpitating on altars, and who, in other cases, were flayed alive and their skins used as dancing- dresses by the priests. Nor need we seek in remote regions or among alien races for proofs that there does not exist a necessary connection between the social types classed as civilized and those higher sentiments which we commonly associate with civilization. The mutilations of prisoners exhibited on Assyrian sculptures are not surpassed in cruelty by any we find among the most bloodthirsty of wild races ; and Rameses II, who delighted in having himself sculptured on temple-walls through- out Egypt as holding a dozen captives by the hair, and striking off their heads at a blow, slaughtered during his conquests more human beings than a thousand chiefs of savage tribes put together. The tortures inflicted on captured enemies by red Indians are not greater than were those inflicted of old on felons by crucifixion, or on sus- pected rebels by sewing them up in the hides of slaughtered animals, or on heretics by smearing them over with combustibles and setting fire to them. The Damaras, described as so utterly heartless that they laugh on seeing one of their number killed by a wild beast, are not worse than were the Romans, who made such elaborate pro- visions for gratifying themselves by watching wholesale slaughters in their arenas. If the numbers destroyed by the hordes of Attila were not equaled by the numbers which the Roman armies destroyed at the conquest of Selucia, and by the numbers of the Jews massacred under Hadrian, it was simply because the occasions did not permit. The cruelties of Nero, Gallienus, and the rest may compare with those of Genghis and Timour ; and, when we read of Caracalla that, after he had murdered twenty thousand friends of his murdered brother, his sol- diers forced the Senate to place him among the gods, we are shown that in the Roman people there was a ferocity not less than that which deifies the most sanguinaiy chiefs among the worst of savages. Nor . did Christianity greatly change matters. Throughout media3val Eu- rope political offenses and religious dissent brought on men carefully devised agonies equaling if not exceeding any inflicted by the most brutal of barbarians. Startling as the truth seems, it is yet a truth to be recognized, that increase of humanity does not go on ^:)«ri 2^ttssu with civilization ; but that, contrariwise, the earlier stages of civilization necessitate a rela- tive inhumanity. Among tribes of primitive men, it is the more brutal rather than the more kindly who succeed in those conquests which effect the earliest social consolidations ; and, through many subsequent 8 THE POPULAR SCIENCE MONTHLY. stages of social evolution, unscrupulous aggression outside of the soci- ety and cruel coercion within are the habitual concomitants of politi- cal development. The men of whom the better organized societies have been formed were at first, and long continued to be, nothing else but the stronger and more cunning savages ; and even now, when freed from those influences which supei'ficially modify their behavior, they prove themselves to be little better. If, on the one hand, we con- template the utterly uncivilized Wood-Veddahs, who are described as " proverbially truthful and honest," " gentle and affectionate," " obey- ing the slightest intimation of a wish, and very grateful for attention or assistance," and of whom Pridham remarks, " What a lesson in gratitude and delicacy even a Veddah may teach ! " and then if, on the other hand, we contemplate our own recent acts of international brigandage, accompanied by the slaughter of thousands who have committed no wi'ong against us — accompanied, too, by perfidious breaches of faith and by the killing of prisoners in cold blood — we can not but admit that, between the types of men classed as uncivilized and civilized, the differences are not necessarily of the kind commonly supposed. Whatever relation exists between moral nature and social type is not such as to imply that the social man is in all respects emo- tionally superior to the pre-social man. " How is this conclusion to be reconciled with the conception of progress ? " most readers will ask. " How is civilization to be justi- fied if, as is thus implied, some of the highest of human attributes are exhibited in greater degrees by wild people who live scattered in pairs in the woods, than by the members of a vast, well-organized nation, having marvelously elaborated arts, extensive and profound knowl- edge, and multitudinous appliances to welfare ? " The answer to this question will best be conveyed by an analogy. As carried on throughout the animate world at large, the struggle for existence has been an indispensable means to evolution. Not sim- ply do we see that, in the competition among individuals of the same kind, survival of the fittest has from the beginning furthered produc- tion of a higher type, but we see that to the unceasing warfare be- .tween species are mainly due both growth and organization. Without universal conflict there would have been no development of the active powers. The organs of perception and of locomotion have .been little by little evolved during the interaction of pursuers and pursued. Im- proved limbs and senses have furnished better sui^plies to the viscera, and improved visceral structures have insured a better supply of aerated blood to the limbs and senses ; while a higher nervous system has at each stage been required for duly coordinating the actions of these more complex structures. Among predatory animals death by starvation and among animals preyed upon death by destruction have carried off the least favorably modified individuals and varieties. POLITICAL INSTITUTIONS— PRELIMINARY. 9 • Every advance in strength, speed, agility, or sagacity in creatures of the one class, has necessitated a corresponding advance in creatures of the other class ; and without never-ending efforts to catch and to escape, with loss of life as the penalty for failure, the progress of neither could have been achieved. Mark now, however, that while this merciless discipline of nature, " red in tooth and claw," has been essential to the evolution of sentient life, its persistence through all time with all creatures must not be inferred. The high organization evolved by and for this universal conflict is not necessarily for ever employed to like ends : the result- ing power and intelligence admit of being far otherwise employed. Not for offense and defense only are the inherited structures useful, but for various other purposes ; and these various other purposes may finally become the exclusive purposes. The myriads of years of war- fare which have developed the powers of all lower types of creatures have bequeathed to the highest type of creature the powers now used by him for countless objects besides those of killing and avoiding being killed. His teeth and nails are but little employed in fight ; and his mind is not ordinarily occupied in devising ways of destroying other creatures, or guarding himself from injury by them. Similarly with social organisms. We must recognize the truth that the struggle for existence between societies has been instrumental to their evolution. Neither the consolidation and reconsolidation of small social groups into large ones, nor the organization of such com- pound and doubly compound groups, nor the concomitant develop- ments of all those aids to a wider and higher life which civilization has brought, would have been possible without intertribal and inter- national conflicts. Social cooperation is initiated by joint defense and offense ; and from the cooperation thus initiated all kinds of coopera- tions have arisen. Inconceivable as have been the horrors caused by this universal antagonism which, beginning with the chronic hostilities of small hordes tens of thousands of years ago, has ended in the occa- sional vast battles of immense nations, we must nevertheless admit that without them the world would still have been inhabited only by men of feeble types, sheltering in caves and living on wild food. But now observe that the intersocial struggle for existence which has been indispensable in evolving societies will not necessarily play in the future a part like that which it has played in the past. Recog- nizing our indebtedness to war for forming great communities and developing their structures, we may yet infer that the acquired powers, available for other activities, will lose their original activities. While conceding that without these perpetual bloody strifes civilized societies could not have arisen, and that an adapted form of human nature, fierce as well as intelligent, was a needful concomitant, we may at the same time hold that, such societies having been produced, the brutality of nature in their units which was necessitated by the process, ceasing lo THE POPULAR SCIENCE MONTHLY. to be necessary with the cessation of the process, will disappear. While the benefits achieved during the predatory period remain a per- manent inheritance, the evils, social and individual, entailed by it will decrease and slowly die out. Thus, then, contemplating social structures and actions from the evolution point of view, we may j)reserve that calmness which is need- ful for scientific interpretation of them, without losing our powers of feeling moral rei^robation or approbation. To these preliminary remarks respecting the mental attitude to be preserved by the student of political institutions, a few briefer ones must be added respecting the subject-matters he has to deal with. If societies were all of the same species, and differed only in their stages of growth and structure, comparisons would disclose clearly the course of evolution ; but unlikenesses of type among them, here great and there small, obscure the results of such com- parisons. Again, if each society grew and unfolded itself without the intru- sion of additional factors, interpretation would be relatively easy ; but the complicated processes of development are frequently recomplicated by sudden changes in the sets of factors. Now the size of the social aggregate is all at once increased or decreased by annexation or by loss of territory ; and now the average character of its units is changed by the coming in of another race as conquerors or as slaves ; while, as a further incident of this change, new social relations are superposed on the old. In many cases, the repeated overrunnings of societies by one another, the minglings of peoples and institutions, the breakings up and reaggregations, so destroy the continuity of normal changes as to make it extremely difficult if not impossible to draw con- clusions. Once more, change in the average mode of life j^ursued by a so- ciety, now increasingly warlike and now increasingly industrial, initi- ates metamorphoses : changed activities generate changes of structures. Hence, there have to be distinguished those progressive rearrange- ments which belong to the further development of one social type, from those caused by the commencing development of another social type. The lines of an organization adapted to a mode of activity that has ceased, or has been long suspended, begin to fade, and are traversed by the increasingly definite lines of an organization adapted to the mode of activity which has i-eplaced it ; and error may result from mistaking traits which belong to the one for those which belong to the other. Hence we may infer that, out of the complex and confused evi- dence, only the larger truths are likely to emerge with clearness. While anticipating that certain general conclusions are to be positively THE SUN'S HEAT. ii established, we may anticipate that more special ones can be alleged only as probable. Happily, however, as we shall eventually see, those general con- clusions admitting of positive establishment are the conclusions of most value for guidance. THE SUN'S HEAT. By Professor C. A. YOUNG, OF PRINCETON, N. J. THERE has been a prevailing idea for many years, founded upon Brewster's fallacious experiments, that thermal, luminous, and chemical rays are fundamentally different, though coexistent in the sunbeams. This is erroneous : it is true, indeed, that rays whose vi- brations are too slow to be seen produce powerful heating effects, and that those which are invisible because they are too raj^id have a strong influence in determining certain chemical and physical reactions ; but it is also true that the visible rays are capable of producing the same effects to a greater or less degree, and there is some reason for think- ing that certain animals can see by rays to which the human retma is insensible. There is absolutely no philosophical basis for distinction between the visible and invisible radiations of the sun, except in the one point of vibration-frequency — their ^j>z*^c7i, to use the analogy of sound. The expressions thermal, luminous, and chemical rays are apt to be misleading. All the waves of solar radiation are carriers of energy, and when intercepted do work, producing heat, or vision, or chemical action, according to circumstances. If the amount of solar light is enormous as compared with terres- trial standards, the same thing is still more true of the solar heat, which admits of somewhat more accurate measurement, since we are no longer dependent on a so imsatisfactory unit as the "candle- power," and can substitute thermometers and balances for the human eye. It is possible to intercept a beam of sunshine of known dimensions, and make it give up its radiant energy to a weighed mass of water or other substance, to measure accurately the rise of temperature pro- duced in a given time, and from these data to calculate the whole amount of heat given off by the sun in a minute or a day. Pouillet and Sir John Herschel seem to have been the first fairly to grasp the nature of the problem, and to investigate upon the sub- ject in a rational manner. Herschel's experiments were made in 1838 at the Cape of Good Hope, where he was then engaged in his astronomical work. He pro- ceeded in this way : A small tin vessel, containing about half a pint 12 THE POPULAR SCIENCE MONTHLY. of water, carefully weighed, was placed on a light wooden support, touching it at only three points. This was put inside of a considera- bly larger cylinder, also of tinned iron ; this outer cylinder having a double cover with a hole in it — the cover large enough to shade the sides of the vessel, and the hole a little less than three inches in diam- eter. A delicate thermometer was immersed in the water, with a sort of dasher of mica for the purpose of stirring it and keeping the tem- perature uniform throughout the mass. The ajij^aratus was so placed and adjusted that the whole of the light and heat passing through the hole in the cover would fall upon the surface of the water, the sun at that time (December 31st) being within 12° of the zenith at noon. This apparatus was placed in the sunshine and allowed to stand for ten minutes, shaded by an umbrella, and the slight rise in the tempera- ture of the water was noted. Then the umbrella was removed and. the solar rays were allowed to fall upon the water for the same length of time, and the much larger rise of temperature was noted ; finally, the apparatus was again shaded and the change for ten minutes again ob- served. The mean between the effects in the first and last ten-minute intervals can be taken as the measure of the influence of other causes besides the sun, and, deducting this from the rise during the ten min- utes' insolation, we have the effect of the simple sunshine. Herschel's figures for his first experiment run as follows : Eise of temperature in first ten minutes 0*25° " " " " second ten minutes (sun) 3-90 " " " " third ten minutes OlO The mean of the first and third is 0*17°, and this deducted from the second gives 3*73° Fahr. as the rise of temperature produced by a sun- beam three inches in diameter, absorbed by a mass of matter equiva- lent to 4,638 grains of water. (We do not indicate the minutiae of the process by which the weight of the tin vessel, thermometer, stirrer, etc., are allowed for.) Nothing more is now necessary to enable us to compute just how much heat is received by the earth in a day or a year, except, indeed, the determination of the very troublesome and some- what uncertain correction for the absorption of heat by the earth's atmosphere ; a correction deduced by means of observations made at varying heights of the sun above the horizon. Herschel preferred to express his results in terms of melting ice, and put it in this way : The amount of heat received on the earth's surface, with the sun in the zenith, would melt an inch thickness of ice in two hours thirteen minutes, nearly. Since there is every reason to believe that the sun's radiation is equal in all directions, it follows that, if the sun were surrounded by a THE SUN'S HEAT. 13 great shell of ice, one inch thick and 186,000,000 miles in diameter, its rays would just melt the whole in the same time. If, now, we suppose this shell to shrink in diameter, retaining, however, the same quantity of ice by increasing its thickness, it would still be melted in the same time. Let the shrinkage continue until the inner surface touches the photosphere, and it would constitute an envelope more than a mile in thickness, through which the solar fire would still thaw out its way in the same two hours and thirteen min- utes ; at the rate, according to Herschel's determinations, of more than forty feet a minute. Herschel continues that, if this ice were formed into a rod 45*3 miles in diameter, and darted toward the sun with the velocity of light, its advancing point would be melted off as fast as it approached, if by any means the whole of the solar rays could be concentrated upon it. Oi", to put it differently, if we could build up a solid column of ice from the earth to the sun, two miles and a quar- ter in diameter, spanning the inconceivable abyss of ninety-three mil- lions of miles, and if then the sun should concentrate his power upon it, it would dissolve and melt, not in an hour nor a minute, but in a single second ; one swing of the pendulum, and it would be water ; seven more, and it would be dissipated in vapor. In formulating this last statement we have, however, employed, not Herschel's figures, but those resulting from later observations, which increase the solar radiation about twenty-five per cent., giving fifty feet, and not forty feet, as the thickness of the ice-crust which the sun would melt off of his own surface in a minute. An easy calcula- tion shows that to produce this amount of heat by combustion would require the hourly burning of a layer of anthracite coal about sixteen feet (five metres) thick over the entire surface of the sun — four fifths of a ton per hour on each square foot of surface — at least eight times as much as the consumption of the most powerful blast-furnace known to art. It is equivalent to a continuous evolution of more than seven thousand horse-power on every square foot of the sun's whole area. As Sir William Thomson has shown, the sun, if it were composed of solid coal and produced its heat by combustion, would burn out in less than six thousand years. Of this enormous outflow of heat the earth of course intercepts only a small portion, about ^^-o^o-q. But even this minute fraction is enough to melt yearly at the equator a layer of ice something over one hundred and ten feet thick. If we choose to express it in terms of " power," we find that this is equivalent, for each square foot of sur- face, to more than sixty tons raised to the height of a mile ; and, taking the whole surface of the earth, the average energy received from the sun is over fifty mile-tons yearly ; or one horse-power, continuously acting, to every thirty square feet of the earth's surface. Most of this, of course, is expended merely in maintaining the earth's tempera- ture ; but a small portion, perhaps -j^ of the whole, as estimated by H THE POPULAR SCIENCE MONTHLY. Ilelmholtz, is stored away by animals and vegetables, and constitutes an abundant revenue of power for the whole human race.* If we inquire what becomes of that principal portion of the solar heat w^hich misses the planet, and passes off into space, no certain answer can be given. Remembering, however, that space is full of isolated particles of matter (which we encoun- ter from time to time as shooting-stars), we can see that nearer or more remotely in its course each solar ray is sure to reach a rest- ing-place. Some have attempted to maintain that the sun sends heat only toward its plan- ets ; that the action of radiant heat, like that of gravitation, is only between masses. But all scientific investigation so far shows that this is not the case. The energy radiated from a heated globe is found to be alike in all directions, and wholly independent of the bodies which receive it, nor is there the slight- est reason to suppose the sun any way differ- ent in this respect from every other incandes- cent mass. Pouillet's experiments were made about the same time as Herschel's, but with a differ- ent apparatus, though based on the same prin- ciples. He named his instrument the pyrhe- liometer, or measurer of solar fire. Fig, 1 rejDresents it. The little snuffbox-like vessel, a b, of silver-plated coppei-, blackened on the upper surface, contains a weighed quantity of water, and a thermome- ter is immersed in it, the mercury in its stem being visible at cl. The disk e e makes it easy to point the instrument squarely to the sun by directing it so that the shadow of a falls concentrically upon this disk. The button at the lower end is for the purpose of agitating the water in the vessel a a, by simply turning the whole thing on its axis in the collar c c. The instrument is much more convenient than Herschel's apparatus, but hardly as accurate, except under very care- ful manipulation. * Several experimenters have contrived machines for the purpose of utilizing the solar heat as a source of mechanical energy, among whom Ericsson and Moucbot have been most successful. M. Pifre describes in a recent number of the "Comptes Eendus " some results from a machine of Mouchot's construction, claiming to have utilized more than eighty per cent, of the heat which falls on the mirrors of the instrument : something over twelve calories to a square metre. We do not mean, of course, that this percentage of the total solar energy appeared as mechanical power in the engine, but only in its boiler. The machine had a mirror surface of nearly one hundred square feet, and gave not quite a horse-power. It is very possible that such machines will find useful applica- tion in the rainless I'cgions like Egypt and Peru. Fig. 1. THE SUN'S HEAT. 15 Tyndall has modified it by filling the upper vessel with mercury, which is a better conductor of heat than water. For relative measurements, as for instance a comparison of the amounts of heat received from the sun at different hours of the day, Crova employs a slightly different instrument, of which Fig. 2, copied from his paper in the " Annales de Chiraie " for February, 1880, is a representation. An exceedingly sensitive alcohol thermometer, shown separately at T, with a large bulb carefully blackened, is inclosed in a double-walled sphere B, nickel-plated on the outside. An opening in the walls of the sphere, carefully aligned with a similar opening in a double screen E, allows a beam of light to fall upon the thermometer-bulb, the beam being about two thirds the diameter of the bulb. The themometer is constructed with a supplementary reservoir, r, at the lower end, by means of which the end of the indicating column can be made to fall near the middle of the scale at any temperature, the object being to measure only changes of temperature, not absolute temperatures. The bulb and tube are so proportioned that a degree on the scale is nearly half an inch long, thus permitting great accuracy of reading. In order, however, to determine just how much heat is required to raise the thermometer of this instrument 1°, it is necessary to compare it with one of the standard instruments, by exposing it to the sun at the same time. This method of procedure, by which we determine the rate at which a sunbeam of given dimensions communicates heat to a mea- sured mass of matter, is known as the dynamic method ; it is some- what inconvenient in requiring considerable time and a number of readings. There is a different process for deducing the same results, which has been employed by Waterston, Ericsson, Secchi, Violle, and others, and may be called the statical method. It consists essentially in observing how much the sun will raise the temperature of a body, exposed to its rays, above that of the inclosure in which it is placed, this inclosure being kept at a fixed and known temperature by the circulation of water, or some such means. Instruments based on this principle are called actinometers. Of these probably the most complete in its arrangements is that of Violle, described in his paper upon the mean temperature of the sun's surface, published in the "Annales de Chimie " in 1877. We give a diagram of the instrument (Fig. 3). It consists of two concentric spheres of thin metal ; the outer, twenty-three centimetres in diameter, the inner, fifteen centimetres. The outer is polished on the outside, the inner is blackened on the inside. The space between the two spheres is filled with water, which is kept at a uniform temperature, either by mixing snow or ice with it, or else by a current circulated through it by means of the stopcocks tt. A sensitive thermometer, T, has its blackened bulb i6 THE POPULAR SCIENCE MONTHLY. placed in the center of the inner sphere, the stem reaching outside through a tubulure provided for the purpose. Two opposite openings, shown in the figure, allow a beam of sunlight to pass through the globes. A perforated screen at D limits its diameter so that none of it shall touch the walls of the vessel, though the thermometer -bulb is entirely covered by it. A small screen at M allows the observer to see the shadow of the thermometer-bulb, and so to perceive whether the tube through which the light enters is properly directed. If the ap- paratus is mounted upon what is called an equatorial stand, like a tele- scope, and provided with clock-work, the whole labor of observation will consist merely in reading the thermometer. The difference be- tween its temperature and that of the water in the surrounding shell gives the necessary data for calculating the intensity of the solar radi- ation at the time of reading ; since the heat received by the thermome- ter from the sun and shell together must just equal that radiated back by the thermometer-bulb to the shell, after allowing for the orifices. Fig. 2.— Cbova's Ptrheliometer. Violle found that at noon, on a fair day, the thermometer of this apparatus generally stood, when exposed to the sun, from 10*5° to 12-5° centigrade (i. e., 18-9° to 22'5° Fahr.) above the temperature of the shell when the latter was filled with ice-water. If it were filled with boiling water, as in some of his experiments, the difference be- came about 1° C. less. The results obtained with instruments of this class of course agree very closely with those reached by the dynamic method. It need hardly be said that the amount of heat received from the sun in a minute by a given area exposed to its radiation varies widely THE SUN'S HEAT. 17 according to the altitude of the sun and the condition of the air ; in- deed, the most difficult part of the experimental problem lies in the determination of the corrections to be applied on account of the ab- sorption of the earth's atmosphere. It would take us too far to dis- cuss the formulae and methods of calculation which have been proposed. They are necessarily very complicated^those, at any, rate which are tolerably accurate in their results — because they have to take into ac- count the meteorological conditions, especially the hygrometric state of the air. Besides this, the absorption varies greatly for radiations of different pitch ; so that the violet rays, which are photographically the most active, suffer more than the green and yellow, which are most effective in the growth of plants ; and these more than the red ; and the red, in their turn, much more than the low-pitched, slowly vibrating waves which, though invisible, are still the chief carriers of energy, and do more to warm and vivify the earth than all the others. Speaking loosely, it may be estimated that at the sea-level, in fair weather, neither excessively moist nor dry, about thirty per cent, of the solar radiation is absorbed when the sun is at the zenith, and at least seventy-five per cent, at the horizon. Of the rays striking the upper surface of the atmosphere, between forty-five and fifty per cent., there- fore, are generally intercepted in the air, even when there are no clouds. Of course, it does not follow that the heat absorbed in our atmos- phere is lost to the earth. Far from it : the air itself becomes warmed and communicates its heat to the earth ; and, since the atmosphere in- tercepts a large proportion of the heat which the earth would radiate into space, if not thus blanketed, the temperature of the earth is kept much higher than it would be if there were no air. It is now generally customary to express the intensity of the solar radiation in a somewhat different way from that which has been in- dicated. Instead of stating how much ice would be melted in a min- ute by a given sunbeam, we give the number of calories * received per minute by one square metre exposed perpendicularly to the sun's rays at the upper surface of the atmosphere. This number is called the solar constant, and according to different experimenters ranges from Pouillet's estimate, 17'6, to that of Forbes, who found 28"2. The most reliable recent determinations by Crova and Violle set it at 23 '2 and 25'4 respectively. Probably 24 is very near the truth, though there remains a considerable amount of uncertainty, since the results obtained by the same observer on different days, after all possible pains is taken with the corrections, are even more discordant than the numbers given above. A continued series of observations at some very elevated station would improve the data. * The calory is that quantity of heat which will raise the temperature of one kilo- gramme of water from 0° to 1° centigrade. VOL. XTIII. — 2 i8 THE POPULAR SCIENCE MONTHLY, Experiments with the thermopile show that the heat radiated by the solar disk varies, like the light, very considerably from the center to the edges. The first observations of this kind were made by Pro- fessor Henry, at Princeton, in 1845, and have since been repeated by many others, Secchi and Langley especially. According to Langley, the heat emitted from a point about 20" from the limb is only one half that from the same extent of surface at the center of the disk ; the diminution of heat being notably less than that of light, as shown by Vogel's observations. Langley's table runs as follows, the first column giving the distance from the center of the disk, and the second the intensity of radiation shown by the thermopile : Distance from Center. neat-Kadiation. 0-00 100 0-25 99 0-50 95 0-75 . 86 0-95 62 0-98 50 Besides this regular variation of the radiation from center to edge, Secchi in 1852 found, or thought he found, a notable difference between the radiation from the equator of the sun and that from the higher lati- tude, the difference being at least one sixteenth between the equator and latitude 30°. The northern hemisphere he also found to be a lit- tle hotter than the southern. Later investigators (Langley especially) have failed to find any such difference ; and on the whole it seems probable that Secchi was mistaken ; though this is not certain, as it would be quite unsafe to assert that the actual condition of the sun's surface may not have changed between 1852 and 1876. In connection with the absorption of the solar atmosphere, Langley has ventured some interesting speculations. After showing that varia- tions in the number and magnitude of sun-spots can not directly pro- duce any sensible effect upon terrestrial temperatures, he calls atten- tion to the fact that even slight changes in the dej^th and density of the sun's absorbing layer would make a great difference ; and he raises the question whether we may not find here the explanation of glacial and carboniferous periods in the earth's history. It is quite certain that, were the envelope removed, the solar radiation would be at least doubled, and perhaps increased in a much higher ratio ; while any con- siderable increase of its thickness would so diminish our heat-supply as to give us perpetual winter. As yet our means of observation have not sufficed to detect with certainty any variations in the amount of heat emitted by the sun at different times. That there are such variations is almost certain, since the nuclei of sun-spots radiate much less heat as well as light than neighboring regions of the solar sui'face, and the faciiljB more ; this has been directly determined with the thermopile. The whole amount THE SUN'S HEAT. 19 of variation in the total heat-supply has, however, proved too small for measurement with our present instruments, and science waits anxiously for apparatus and methods of delicacy adequate to deal with the prob- lem. We are as yet entirely uncertain whether, at the time of a sun-spot maximum, the solar radiation is more or less powerful than ordinary. There has been a great deal of pretty vigorous discussion as to the temperature of the sun, and that the subject is a difficult one is evi- dent enough from the wide discrepancy between the estimates of the highest authorities. For instance, Secchi originally contended for a temperature of about 18,000,000° Fahr. (though he afterward lowered his estimate to about 250,000) ; Ericsson puts the figure at 4,000,000 Q a Fig. 3.— Viollb's Actinometek. or 5,000,000 ; Zollner, Spoerer, and Lane name temperatures ranging from 50,000° to 100,000° Fahr. ; while Pouillet, Vicaire, and Deville have put it as low as between 3,000° and 10,000° Fahr. The intensest artificial heat may perhaps reach 4,000° Fahr. The difficulty is twofold. In the first place, the sun can not prop- erly be said to have a temperature, any more than the earth's atmos- phere can. The temperature of different portions of the solar enve- lope must vary enormously, increasing fast as we descend below the surface ; so that in all probability there may be a difference of thou- sands of degrees between the temperature at the upper surface of the photosphere and that at the sun's center, or even at the depth of a few thousand miles. 20 THE POPULAR SCIENCE MONTHLY. We may, however, partially evade this difficulty by substituting as the object of inquiry the sun's effective temperature : i. e., instead of seeking to ascertain the actual temperature of different parts of the sun's surface, we may inquire what tempei'ature would have to be given to a uniform surface of standard radiating power (a surface cov- ered with lampblack is generally taken as this standard) and of the same size as the sun, in order that it might emit as much heat as the sun actually does. In this waywe obtain a perfectly definite object of investigation. But the problem still remains very difficult, and has obtained as yet no entirely satisfactory solution. The difficulty lies in our ignorance as to the laws which connect the temperature of a surface with the amount of heat radiated per second. So long as the temperature of the radiating body does not much exceed that of sur- rounding space, the heat emitted is very nearly proportional to the ex- cess of temperature. The extremely high values of the solar tempera- ture asserted by Secchi and Ericsson depend upon the assumption of this law (known as Newton's) of proportionality between the heat ra- diated and the temperature of the radiating mass ; a law which direct experiment proves to be untrue as soon as the temperature rises a little. In reality, the amount of heat radiated increases much faster than the temperature. More than forty years' ago the French physicists Dulong and Petit, by a series of elaborate experiments, deduced an emj^ii-ical formula, which answered pretty satisfactorily for temperatures up to a dull-red heat. By applying this formula, Pouillet and Vicaire and others ar- rived at the low solar temperatures assigned by them. It is, however, evidently unsafe to apply a purely empirical formula to circumstances so far outside the range of the observations upon which it was found- ed, and, in fact, within a few years several experimenters, Rosetti espe- cially, have shown that it needs modification even in the investigation of artificial temperatures, like that of the electric arc. Rosetti, from his observations, has deduced a different law of radiation, and by its aj^pli- cation finds 10,000° Cent, or 18,000° Fahr. as the effective temperature of the sun ; a result which, all things considered, seems more reason- able and better founded than any of the earlier estimates. He consid- ers that this is also pretty nearly the actual temperature of the upper layers of the photosphere. The radiating power of the photospheric clouds, to be sure, can hardly be as great as that of lampblack, but on the other hand their radiation is supplemented by that of other layers, both above and below. Besides the data as to the intensity of the solar temperature obtained by calculation from the measured emission of heat, we have also direct evidence of a very impressive sort. When heat is concentrated by a burning-glass, the temperature at the focus can not rise above that of the source of heat, the effect of the lens being simply to move the object at the focus virtually toward the sun ; so that, if we neglect the THE SUN'S HEAT. 21 loss of heat by transmission through the glass, the temperature at the focus should be the same as that of a point placed at such a distance from the sun that the solar disk would seem just as large as the lens itself viewed from its own focus. The most powerful lens yet constructed thus virtually transports an object at its focus to within about 250,000 miles of the sun's sur- face, and in this focus the most refractory substances — platinum, fire- clay, the diamond itself — are either instantly melted or dissipated in vapor. There can be no doubt that, if the sun were to come as near us as the moon, the solid earth would melt like wax. In 1878 Professor Langley made a careful comparison between the radiation of the sun and that of the molten metal in a Bessemer "con- verter " when at its greatest heat. By a very ingenious arrangement he brouffht the solar heat and that from the metal to confront each other upon the faces of a thermopile ; and he found that, even neglect- ing all corrections for the loss of solar heat by transmission through the smoky atmosphere of Pittsburgh, and by the reflections which brought it to his apparatus, the sun's radiation was eighty-seven times as powerful as that from the converter, surface for surface. Had the just corrections been ascertained and applied (a matter, however, of extreme difficulty, and even impossible under the circumstances), the ratio would be increased from eighty-seven to more than one hundred certainly, and pei'haps to one hundred and fifty. As to the temperature of the metal in the converter. Professor Langley considers that it must have been above that of the fusion of platinum, because platinum wire held over the mouth of the converter just before pouring, or in the stream of metal, melts immediately. There may be some question, however, whether the melting of the wire really indicates quite so high a temperature, since fluid iron and its vapor attack platinum in something the same way as mercury and its vapor attack gold and silver. Similar conclusions as to the inten- sity of the solar temperature follow from investigations by Soret and others, as to the penetrating power of the sun's rays ; and from a comparison with artificial sources of heat in respect to the relative proportion of the rays of different wave-lengths in the total radia- tion. A body of low temperature emits an enormous proportion of slowly vibrating, invisible vibrations, while, as the temperature rises, the shorter waves become proportionally more and more abundant. Thus, in the composition of a body's radiation, we get some clew to its temperature. Hitherto all such tests concur in putting the sun's temperature high above that of any known terrestrial flame. And now we come to questions like these : How is such a heat maintained ? How long has it lasted already — how long will it con- tinue— are there any signs of either increase or diminution ? — ques- tions to which, in the present state of science, only somewhat vague and unsatisfactory replies are possible. 22 THE POPULAR SCIENCE MONTHLY. As to progressive changes in the amount of the solar heat, it can be said, however, that there is no evidence of anything of the sort since the beginning of authentic records. There have been no such changes in the distribution of plants and animals within the last two thousand years, as must have occurred if there had been within this period any appreciable alteration in the heat received from the sun. So far as can be made out, with few and slight exceptions, the vine and olive grow just where they did in classic days, and the same is true of the cereals and the forest-trees. In the remoter past there have been undoubt- edly great changes in the earth's temperature, evidenced by geological records ; carboniferous epochs, when the temperature was tropical in almost arctic latitudes ; and glacial periods, when our now temperate zones were cased in sheets of solid ice, as northern Greenland is at present. Even as to these changes, however, it is not yet certain whether they are to be traced to variations in the amount of heat emit- ted by the sun, or to changes in the earth herself or in her orbit. So far as observation goes, we can only say that the outpouring of the solar heat, amazing as it is, appears to have gone on unchanged through all the centuries of human history. What, then, maintains the fire ? It is quite certain, in the first place, that it is not a case of mere combustion. As has been said only a few Images back, it has been shown that even if the sun were made of solid coal, burning in pure oxygen, it could only last about six thousand years — it would have been nearly one third consumed since the begin- ning of the Christian era. Nor can the source of its heat lie simply in the cooling of its incandescent mass. Huge as it is, its temperature must have fallen more than pei'ceptibly within a thousand years if this were the case. Two different theories have been proposed, which are probably both true to some extent. One of them finds the chief source of the solar heat in the impact of meteoric matter, the other in the slow contrac- tion of the sun. As to the first, it is quite certain that some of the solar heat is produced in that way ; but the question is, whether the supply of meteoric matter can be sufiScient to account for any great proportion of the whole. As to the second, on the other hand, there is no question as to the adequacy of the hypothesis to account for the whole supply of solar heat ; but there is as yet no direct evidence whatever that the sun is really shrinking. The basis of the meteoric theory is simply this : If a moving body be stopped, either suddenly or gradually, a quantity of heat is gener- mv'' . ated, which may be expressed, in calories, by the formula •— -, m which m is the mass of the body in kilogrammes, and v its velocity in metres per second : a body weighing 850 kilogrammes and moving one metre per second would, if stopped, develop just one calory of heat — i. e., enough to heat one kilogramme of water from freezing-point to 1° centi- THE SUN'S HEAT. 23 grade ; if it were moving 500 metres per second (about the speed of a cannon-ball), it would produce 250,000 times as much heat, or enough to raise the temperature of a mass of water equal to itself nearly 300° C. If it were moving, not 500 metres per second, but about 700,000 (approximately the velocity with which a body would fall into the sun from any planetary distance), the heat produced would be 1,400 x 1,400, or nearly 2,000,000 times as great — sufficient to bring a mass of matter many thousand times greater than itself to most vivid in- candescence, and immensely more than could be produced by its com- plete combustion under any conceivable circumstances. With refer- ence to this theory, Sir William Thomson has calculated the amount of heat which would be produced by each of the planets in falling into the sun from its present orbit. The results are as follows, the heat produced being expressed by giving the number of years and days through which it would maintain the sun's present expenditure of energy : Tears. Days. Mercury 6 219 Venus.' 83 326 Earth 95 19 Mars 12 259 Jupiter 32,254 Saturn 9,652 Uranus 1,610 Neptune 1,890 Total , 45,604 That is, the collapse of all the planets upon the sun would generate sufficient heat to maintain its supply for nearly 46,000 years. A quantity of matter equal to only about one one hundredth of the mass of the earth, falling annually upon the solar surface, would there- fore maintain its radiation indefinitely. Of course, this increase of the sun would cause an acceleration of the motion of all the planets — a shortening of their periods ; since, however, the mass of the sun is 330,000 times that of the earth, the yearly addition would be only one thirty-three millionth of the whole, and it would require centuries to make the effect sensible. The only question, then, is whether any such quantity of matter can be supposed to reach the sun. While it is impossible to deny this dogmatically, it on the whole seems improb- able, for astronomical reasons. If so large a quantity of matter annu- ally falls upon the solar surface, it is necessary to suppose a vastly greater quantity circulating around the sun, between it and the planet Mercury. The process by which the orbit of a meteoric body is so changed as to make it enter the solar atmosphere is a very slow one ; so that only a very small proportion of the whole could be caught in any given year. But, if there were near the sun any considerable quantity of meteoric matter — anything like the mass of the earth, for 24 THE POPULAR SCIENCE MONTHLY. instance — it ought to produce a very observable effect upon the mo- tions of the planet Mercury — an effect not yet detected.* For this reason astronomers generally, while conceding that a por- tion, and possibly a considerable fraction, of the solar heat may be ac- counted for by this hypothesis, are disposed to look further for their explanation of the principal revenue of solar energy. They find it in the probable slow contraction of the sun's diameter, and the gradual liquefaction and solidification of the gaseous mass. The same total amount of heat is produced when a body moves against a resistance which brings it to rest gradually, as if it had fallen through the same distance freely and been suddenly stopped. If, then, the sun does con- tract, heat is necessarily produced by the process ; and that in enor- mous quantity, since the attracting force at the solar surface is more than twenty-seven times as great as gravity at the surface of the earth, and the contracting mass is so immense. In this process of contraction, each particle at the surface moves inward by an amount equal to the whole diminution of the solar radius, while a particle below the surface moves less, and under a diminished gravitating force ; but every particle in the whole mass of the sun, excepting only that at the exact center of the globe, con- tributes something to the evolution of heat. To calculate the precise amount of heat developed, it would be necessary to know the law of increase of the sun's density from the surface to the center ; but Helmholtz, who first suggested the hypothesis, in 1853, has shown that, under the most unfavorable suppositions, a contraction of about 250 feet a year in the sun's diameter — a mile in twenty-one years — would account for its whole annual heat-emission. This contraction is so slow that it would be quite imperceptible to observation. It would require 9,500 years to reduce the diameter a single second of arc (since 1" equals 450 miles at the sun's distance), and nothing less would be certainly detectable. Of course, if the contraction is more rapid than this, the mean temperature of the sun must be actually rising notwithstanding the amount of heat it is losing. Observation alone can determine whether this is so or not. If the sun were wholly gaseous, we could assert positively that it must be growing hotter ; for it is a most curious, and at first sight paradoxical, fact, first pointed out by Lane in 1870, that the tempera- ture of a gaseous body continually rises as it contracts from loss of heat. By losing heat it contracts, but the heat generated by the con- traction is more than sufficient to keep the temperature from falling. * Leverrier considered that he had detected in the motions of Mercury an irregularity of the kind indicated, but much smaller. It was such as, according to his calculations, would be accounted for by the action of one or several planets, whose aggregate mass should be much less than that of the earth. It was on this basis that he founded his strong belief in the existence of the intra-mercurial planet, Vulcan. THE SUN'S HEAT. 25 A gaseous mass, losing heat by radiation, must, therefore, at the same time, grow both smaller and hotter, until the density becomes so great that the ordinary laws of gaseous expansion reach their limit, and con- densation into the liquid form begins. The sun seems to have arrived at this point, if, indeed, it were ever wholly gaseous, which is ques- tionable. At any rate, so far as we can now make out, the exterior portion — i. e., the jihotosphere — appears to be a shell of cloudy matter, precipitated from the vapors which make up the principal mass, and the progressive contraction, if it is indeed a fact, must result in a con- tinual thickening of this shell and the increase of the cloud-like portion of the solar mass. This change from the gaseous to the liquid form must also be ac- companied by the liberation of an enormous quantity of heat, sufficient to materially diminish the amount of contraction needed to maintain the solar radiation. Of course, if this theory of the source of the solar heat is correct, it follows that in time it must come to an end ; and, looking backward, we see that there must also have been a beginning : time was when there was no such solar heat as now, and the time must come when it will cease. We do not know enough about the amount of solid and liquid matter at present in the sun, or of the nature of this matter, to calcu- late the future duration of the sun with great exactness, though an approximate estimate can be made. The problem is a little compli- cated, even on the simplest hypothesis of purely gaseous contraction, because, as the sun shrinks, the force of gravity increases, and the amount of contraction necessary to generate a given amount of heat becomes less and less ; but this difficulty is easily met by a skillful mathematician. According to Newcomb, if the sun maintains its present radiation, it will have shrunk to half its present diameter in about five millions of years, at the longest. As it must, when reduced to this size, be eight times as dense as now, it can hardly then continue to be mainly gaseous, and its temperature must have begun to fall. Newcomb's conclusion, therefore, is, that it is hardly likely that the sun can continue to give sufficient heat to support life on the earth (such life as we now are acquainted with, at least) for ten millions of years from the present time. It is possible to compute the past of the solar history upon this hypothesis somewhat more definitely than the future. The present rate of contraction being known, and the law of variation, it becomes a purely mathematical problem to compute the dimensions of the sun at any date in the past, supposing its heat-radiation to have remained unchanged. Indeed, it is not even necessary to know anything more than the present amount of radiation and the mass of the sun, to com- pute how long the solar fire can have been maintained at its present intensity by the process of condensation. No conclusion of geometry 26 THE POPULAR SCIENCE MONTHLY. is more certain than that the contraction of the sun, from a diameter even many times larger than that of Neptune's orbit to its present dimensions, if such a contraction has actually taken place, has furnished about eighteen million times as much heat as the sun now supplies in a year ; and, therefore, that the sun can not have been emitting heat at the present rate for more than that length of time, if its heat has been generated in this manner. If it could be shown that the sun has been shining as now for a longer time than that, the theory would be refuted ; but, if the hypothesis be true, as it probably is in the main, we are inexorably shut up to the conclusion that the total life of the solar system, from its birth to its death, is included in some such space of time as thirty millions of years : no reasonable allowances for the fall of meteoric matter, based on what we are now able to observe, or for the development of heat by liquefaction, solidification, and chemi- cal combination of dissociated vapors, could raise it to sixty millions. At the same time it is, of course, impossible to assert that there has been no catastrophe in the past — no collision with some wandering star, endued, as Croll has supposed, like some of those we know of now in the heavens, with a velocity far surpassing that to be acquired by a fall, under the sun's attraction, even from infinity — producing a shock which might in a few hours, or moments even, restore the wasted energy of ages. Neither is it wholly safe to assume that there may not be ways of which we yet have no conception, by which the energy apparently lost in space may be returned, and burned-out suns and I'un-down systems restored ; or, if not restored themselves, be made the germs and material of new ones to replace the old. But the whole course and tendency of things, so far as science now makes out, points backward to a beginning and forward to an end. The present order of things appears to be limited in either direction by terminal catastrophes, which are veiled in clouds as yet impene- trable. ■♦ » » EDUCATION AS A HINDKANCE TO MANUAL OCCU- PATIONS.* By Professor SILVANUS P. THOMPSON. THERE can not be two opinions as to the prejudicial influence ex- erted upon the industrial interests of Great Britain by the unsat- isfactory state into which the question of apprenticeship has been gradually drifting, and out of which it has not yet begun to rise anew. Out of harmony with the necessities and conditions of the times, a relic of days long past, ere the steam-engine, or perhaps even the printing- * Extract from an article in the September " Contemporary Review," entitled " The Apprenticeship of the Future." EDUCATION AS A HINDRANCE. 27 press, had rendered great manufacturing industries possible, the sys- tem of apprenticeship, which has been handed down to us from our forefathers, is so strangely at variance with the most obvious prin- ciples of sound educational science, to say nothing of sound economic theory, that there is little wonder that it has fallen into discredit, and that the legal provisions under which it grew and flourished have been suffered to lapse into a dead letter. Time was when, for the most part, the skilled artisan, who was master of his trade, worked at home in his own house, assisted, it might be, by a few younger workmen or jour- neymen. Into his house and family he would receive one or two young lads to learn, during a seven years' engagement, the art and mystery of his craft ; the master himself working and teaching them his work, feeding and clothing them, and receiving from them in return the value of the services which, as they became more apt in their work, they were able to render. The advantages of thorough training by the continuous care of the master were unquestionably proved by the uni- versal adoption of the system. The ancient trade guilds grew and acquired their legal status upon this usage as their very foundation, and a seven years' apprenticeship formed the one necessary qualifica- tion for the possession of the right to exercise the following of any occupation or employment, art or craft, recognized among the handi- crafts of the time. With the extension of trade and the wider use of machinery the number and power of the adult employed workmen in- creased, and with their increase of power came a jealousy, on the one hand, toward the masters ; on the other, toward the apprentices, who were regarded as cheapening labor when employed in too great numbers. The conflict which arose between employer and employed gradually merged into one between capital and labor. By dint of strikes the workmen at last prevailed, and, in attempting to bring about a limitation in the amount of apprenticeship labor, brought about a re- sult of quite another kind, and one far more disastrous than the evil sought to be remedied — the destruction of all the best and most impor- tant features of apprenticeship. Other issues aided in the accomplish- ment of the course thus entered on. Mr. George Howell has so well delineated the outlines of the change, that the transcription of a few of his words will sufiice to complete the tale. " But a change was com- ing o'er the spirit of the dream : another day was dawning fraught with still greater issues to the journeymen, for, instead of the old system of master and craftsmen, there grew up quite another kind of master- ship and of hiring. The master had already begun to be less the crafts- man and more of the employer. Capital was fast becoming the great motive power. Streams were first utilized, then steam ; complicated machinery was being substituted for hand-labor in many of the grow- ing industries of the time ; the master no longer worked at the trade himself, he directed and found the capital. The number of persons employed was also greatly augmented ; instead of the old fealty be- 28 THE POPULAR SCIUNCE MONTHLY, tween master and men there came estrangement more and more, until sometimes the workpeople scarcely ever saw their veritable employer. Under these circumstances the conditions of apprenticeship were com- pletely changed, not suddenly, but gradually, until the apprentice be- came merely the boy worker, with less wages but more solemn engage- ments than a journeyman. The master to whom he was bound no longer taught him his trade ; he was, so to speak, pitchforked into the workshop to pick up his trade as best he could, or to learn it from the many journeymen who were there employed. It was no one's duty to teach him ; there was no pay and no responsibility," The present state of British commerce brings home the conviction that it is no idle cry that has sounded ever and anon in our ears, warn- ing us of the deterioration in the quality of our manufactures and in the average caliber of our skilled artisans. International exhibitions have from time to time afforded the means of drawing comparisons between the work of other nations and our own work ; comparisons by no means always in our favor, often the reverse. Apprenticeship, with its wholesome rules, having decaj^ed in everything but form, the lads who enter the shops are never pi-operly instructed, but are made the drudges of the older workmen. What wonder that they acquire habits of idleness and carelessness that not only pursue them through the whole of their work, but, worse than this, corrupt and undermine their morals ? What wonder that their manij)ulation is but half acquii'ed, or that the methods and devices they learn to apply are those of half a century ago ; ancient relics of prejudice and unscientific " rules of thumb," handed down by the tradition of the shops, a veritable sur- vival of the unfittest ? Without the shadow of a doubt the truth that there is — and alas, that there is — much truth in the outcry concerning the inferiority of training and capacity of the British artisan, may be very largely imputed to the relaxation and degeneration of the old system of apprenticeship ; for, with all its faults, it did at least pro- vide that a skilled master should become personally responsible for the training of the apprentice in his craft. In that famous codicil to his will wherein Benjamin Franklin devised so many thoughtful legacies to promote the well-being of the land and city of his adoption, he wrote — and we must remember how intimate and many-sided was his acquaintance with the condition of labor in his day — these ever-mem- orable words : ^^ I have considered that, among citize7is, good appren- tices are most likely to make good citizens.'''' If this be true, seeing how rare a good apprentice is in the j^resent day, the aphorism instilled into our ears as schoolboys, Boni cives rari (good citizens are scarce), threatens to receive a weighty comment from the experience of the nineteenth century ! Be this as it may, a very little consideration will show how real is the crisis to be faced, and how irrevocably of the past the apprenticeship of the past is. What, then, must be done ? " Apprenticeship is absolutely neces- EDUCATION AS A HINDRANCE. 29 sary for the purpose of acquiring a practical knowledge of a trade ; without this there can be no guarantee for good and efficient work- manship." Such is the dictum of one who speaks with authority from the point of view of labor, and the sentiment is the expression of that which all admit. Better education of the children — such, in fact, as is contemplated by the provisions 'of the Elementary Education Act of 1870 — may, it is hoped, quicken the intelligence ere the a^e is reached at which apprenticeship begins : but will it do more '? Nay, have we not indeed some reason rather to look askance at the work of the school boards, and the scheme of education which they offer to our juvenile artisan population ? Coiteris paribus, the better educated our artisans are, the better workmen will they make ; but we must take care that the education is of the right sort. Now, what will be the verdict of future generations on learning that the education which this great and powerful nation offers to the children of its artisans, to the class that will form the artisans of the next generation, was of a character purely literary, in no sense technical or even scientific ? It is an education which, so far as it goes beyond the three elements of reading, writing, and arithmetic, is framed in all its essential featm-es upon an exclusively collegiate type of studies ; grammar, history, geograi^hy, foreign languages, and the like, being introduced, to the utter exclusion in all the most important of the successive "Stand- ards " of any teaching of drawing, of mechanics, of the simplest facts of science or of natural history — of all, in fact, that most nearly con- cerns the workman throughout his entire career. In all the construc- tive trades the greater part of a workman's instructions are given to him in the form of working drawings. Yet we suffer the budding artisan to pass through the schools ignorant of the first rudiments of a science that is as essential to his work as are the four rules of arith- metic. And ought we, then, to be surprised if, in pursuance of the system we have deliberately marked out for the rising generation, we keep our future artisans, till they are fifteen or sixteen, employed in no other work than sitting at a desk to follow, pen in hand, the literary course of studies of our educational code, we discover that on arriving at that age they have lost the taste for manual work, and prefer to starve on a threadbare pittance as clerks or book-keepers rather than by the less exacting and more remunerative labor of their hands ? At the present moment, this tendency to despise a life of honorable man- ual toil in straining after a supposed gentility would be truly pitiable, if the proportions it has attained did not awaken more serious appre- hensions. It is an evil not confined to this country alone, but it is known, too, in the great cities of the States, of Germany, and of France. In a recent most able work upon primary education and apprenticeship in France, M. Salicis, a naval officer and cantonal delegate, speaks in forcible terms of the distaste for work of the children who leave the elementary schools of Paris : " These little bureaucrats, boys and girls, 30 THE POPULAR SCIENCE MONTHLY. outlaws from real labor by no fault of their own, come naturally to the end of their school course with one fear before them — that of being forced to become workmen and workwomen ; but Avith one wish also, the boys to become clerks, the girls shopwomen. And hence this un- defined, uncertain, overstocked class of book-kee2:)ers, cashiers, sales- men, clerks, agents with a thousalid qualifications, scorning the cap and blouse for the sake of broadcloth and silk hat ; and the correspond- ing class, still more to be pitied, of young ladies, of no shop, perhaps, and some with the coveted bonnet, but, alas ! how pi'ocured ? " Obviously, with such facts as these staring us in the face, we must admit a flaAv in the training given in our primary schools if its result is in so large a number of cases to destroy the natural capacity for manual labor. The fault is not so much in the amount of education as in the nature of the studies. For many trades the training of the hand to work may, and in some must, begin at an earlier age than that at which many children leave the elementary school. In some trades, indeed, the masters definitely refuse to take apprentices above a cer- tain age ; if they did take them the union would interfere. The taste for manual work is imbibed at a very early age, and there is not want- ing evidence to prove most distinctly that even a veiy sm'^11 amount of manual labor introduced into the elementary school serves to keep alive the capacity for active employment, and the manipulative skill of the fingers. The first and most obvious step to be taken to bring about the iirgently needed remedy is to render at least permissive, if not authori- tative, a reform more or less sweeping in character in the instruction given in our elementary schools to boys and girls between the ages of ten and fourteen. For this class of children the provisions of our ex- isting educational code could not possibly be more imsatisfactory than they are, when regarded from the point of view that these children will in a few months have to work for a part at least of their own living. The crumbling edifice of apprenticeship is made to repose upon a basis of literary studies which positively unfit the young ap- prentice to enjoy the few benefits which that obsolete institution can still offer. The case is beset, then, with a double difficulty : that while the old system of apprenticeship is less and less able to afford a training wor- thy the name to the child of the artisan, the character of the educa- tion given him not only does not make up for that which apprentice- ship can not now give him, but even predisposes him against the career of manual toil to which apprenticeship is the necessary and only adequate introduction. The reform needed, then, as a first step, is the substitution of certain technical and scientific studies for some of the literary studies at present prescribed. Not that these literary studies are not in themselves good — quite the reverse ; only, they must be de- ferred till a little later in the educational course. Among the subjects THE GLACIAL MAN IN AMERICA. 31 that will in lieu claim prominence are drawing * and the elements of the physical sciences so far as they can be illustrated by the common things of every-day life. That is the first and easiest step in reform, but it it does not probe to its depths the malady : at best it is little more than skin-deep. The distaste for work on the part of the artisan children on the one hand and the incapacity and ignorance which re- sult from the chaotic state of apprenticeship on the other hand alike call for a more trenchant remedy. It is absolutely necessary, in the first place, that the children should enter earlier upon manual labor, that they may gain some skill with their fingers ere they pass the perilous point at which their taste or distaste for work may be ac- quired ; and, in the second, that their education, the training of their mental capacities, should continue till a later period, when their minds are more matured and their faculties sharpened by experience. The whole question of technical education lies in the simultaneous solution of these two problems. ♦»» THE GLACIAL MAN IN AMEKICA. By B. F. De COSTA. IN that distant age when Nature was still toiling at the foundations of the Eastern Continent, portions of America had become dry land, and mountain-peaks in North Carolina were illuminated by rising and setting suns. It is, therefore, an anachronism to speak of America as the New World, especially when we remember the high antiquity of the fauna of North America. Still it is believed that the Eastern Con- tinent was the original abode of man. But when, or under what circumstances, did America receive her first human inhabitant ? Heretofore those who have discussed the question have assigned the event to a comparatively modern period, and have considered the probability of immigrations from Asia by Behring Strait ; while others have suggested early transatlantic movements, or the peopling of America from a lost continent of the Pacific Ocean. The discovery of stone implements, however, in the glacial deposits of the Delaware Valley gives a fresh tm-n to the dis- * I am not here advocating drawing as a fine art, much as we may hope the fine arts might do for the culture of the future generation, but drawing as a science ; by which I mean the representation of real objects to scale, as workmen have them represented in the drawings from which they work ; as, in the higher development, engineers and archi- tects represent them. As is well known, this is frequently, though erroneously, described as " mechanical " drawing. Erroneously, for the sketches by which directions to work- men are conveyed may be of the roughest " free-hand " type provided only they are con- structed upon the scientific methods in use in all the best workshops, and " figured " — that is to say, having the various dimensions accurately marked upon them. 32 THE POPULAR SCIENCE MONTHLY. cussion, and carries the question back to remote j^eriods. It is true that the great antiquity of man on this continent had been maintained previously, but the evidence was quite unlike what is now offered. Yet, whatever may be concluded ultimately respecting the antiquity of the Delaware flints, it is quite ajDparent that the red-man found in Amei'ica at the period of its rediscovery by Cabot, Vespucci, and Columbus, was not the descendant of any glacial man. No line of connection can be made out. This continent does not appear to have any Kent's Hole like that at Torbay, affording a continuous history, beginning with the cave-bear and ending with " W. Hodges, of Ire- land, 1G88." The race that rose to wealth and power in Central America did not succeed any rude spear-maker. More and more is it becoming evident that the people of Central America sprang from a superior race inhabiting the borders, of the Mediterranean. This is indicated by a certain similarity in manners, customs, architecture, and religion. Investigations, now in progress, promise to yield the approx- imate date of the period when the first conquerors of Mexico and Yu- catan crossed the sea. The Spaniards learned that the people whom they conquered had themselves figured in the role of invaders, entering from a country called Tulan oi Tulapan, and overrunning the then dominant race. It may yet be demonstrated that this took place about the third year of the Christian era. But who were these earlier in- habitants ? These we believe were not the descendants of an indige- nous race, any more than were the later tribes. There is nothing to show that they were ever connected in America with any glacial or pliocene man. They might, however, be referred to still more remote migrations from Europe, which may have taken place in connection with events that gave rise to the story of the lost continent of At- lantis, as related by Plato. The so-called aboriginal red-man is com- paratively a modern, although the author of " Leaves of Grass " asks concerning " the friendly and flowing savage," is he " waiting for civilization or past it and mastering it?" However this may be, he is wandering over the graves of peoples who left no record of their ex- ploits, either in the continent where they sprung into life or where they died. It is, indeed, a significant fact that the East furnishes no very plain tradition of any exodus which peopled America. The prehistoric emigrant must have been possessed of the idiosyncrasies of those who " . . . . fold tlieir tents like the Arabs And silently steal away." The absence of such traditions is nevertheless not at all surprising, since the people of antiquity, and notably the Phoenicians, guarded their distant maritime discoveries with care. Indeed, we wholly mis- apprehend the spirit of that remote age, in supposing that the navi- gators would hasten to show the way to new-found lands, and proclaim their discoveries to all the world. This was not even the spirit of the THE GLACIAL MAN IN AMERICA. 33 sixteenth century, for at that period, in the spirit of the Tyrian and Si- donian sailor, the Spaniards and the French had their plans for stopping the advance of other nations — the one by fortifying the straits of Ma- gellan, and the other by holding the supposed route to the Indies by way of the St. Lawrence. It is now gradually becoming apparent that the peopling of Amer- ica was accomplished by more than one race of emigrants, and that at least two distinct expeditions went from Europe to Mexico and Yucatan before the Spaniards. This question, therefore, has its his- toric and archaeological side, and consists of a number of very distinct lines, which are to be studied separately by specialists, in the con- viction that no one theory or set of facts covers the whole ground. Several distinct contributions were made by the inhabitants of the Eastern Continent toward the peopling of America, and, by means of a cai'ef ul division of labor, we may yet reach some satisfactory solution of a subject that has so long baffled inquiry. Such studies may be conducted on strictly scientific principles, as well as those prosecuted with relation to the story of life in general on this continent ; for, if we may accept as historic the representation of Professor Marsh, who pictures the American primates making their way over the miocene bridge at Behring Strait to Europe, and failing, later, when differenti- ated, to return, because the bridge had broken down, man alone re- turning to the country of his " earlier ancestry," it is certainly reason- able to hope that the origin of those races not connected with the in-comer by Behring Strait may be satisfactorily explained. At what period the Atlantic was first crossed by man it is impos- sible now to conjecture. It was nevertheless navigated in very early times, and was a sea of light, though at the dawn of history it appears as the " Sea of Darkness," inspiring no little apprehension and dread ; while Albinovinus sends out Germanicus upon the sea with a ruit ipsa dies. Under the circumstances, therefore, the old discussions will be continued, though the subject of the glacial man in America may be pursued as something wholly independent. But was there any glacial man in America ? To this question the answer is distinct, though given with the reserve which the subject justifies. For the best that is known, we are chiefly indebted to Dr. C. C. Abbott, who was the first to call attention to the stone imple- ments found in the glacial deposits of the Delaware Valley. These implements are chiefly of argellite, though examples of flint occur at higher levels. They have been found at the bluffs near Trenton, both in position where deposited and among the debris at the base. Dr. Abbott says, " Perhaps it is a wise caution that is exercised in but provisionally admitting the great antiquity of American man, but, were these rude implements not attributed to an inter-glacial people, their coequal age with the containing beds would never have been questioned." On this point the Curator of the Peabody Museum at VOL. XVIII, — 3 34 THE POPULAR SCIENCE MONTHLY. Cambridge observes, in the tenth annual report : "Dr. Abbott has probably obtained data which show that man existed on our Atlantic coast during the time of, if not prior to, the formation of the great gravel deposit which extends toward the coast from the Delaware River, near Trenton, and believed to have been formed by glacial action. From a visit to the locality with Dr. Abbott, I see no reason to doubt the gen- eral conclusion he has reached in regard to the existence of man in glacial times on the Atlantic coast of North America." The support given to Dr. Abbott's conclusions by investigators stamps them as of high interest, while his own arguments are entitled to the same respectful consideration. Several of his observations are not easily set aside. For instance, he says, " if the same age is ascribed to these i^aleolithic implements and the ordinary Indian relics," then, as already asked, " how could the one series become imbedded, often to great depths, and not representatives of any class of weaj^ons, do- mestic utensils and ornaments ?" It would, indeed, be a singular opera- tion of Nature, that selected one class of relics only for preservation. The conclusion is, " that in the essentially unmodified debris of the terminal moraine in central New Jersey, and in others upon the sur- face (which, however, are in part only of more recent origin), it is shown that the occupancy of this portion of our continent by man ex- tends back into the history of our globe, in all probability to even an earlier date than the great ice age ; and that the maximum severity of the climate did not destroy hira ; and that subsequently he tenanted our seacoast and river-valleys, until a stronger and more warlike race drove him from our shores." It is not the purpose of the Avriter, however, to attempt to add any- thing to the argument, especially as he is assured that the question now seems to concern the probability of man having existed in Amer- ica prior to the glacial period. We, therefore, take the evidence as it stands, leaving its strengthening or overturning, as the event may prove, to the future, aiming in this article to give a fuller illustration than has heretofore been attempted of the agreement of the theory with accepted history ; for, possibly, it may eventually appear that the glacial man is more closely connected with historic man than could have been expected. Professor Marsh observes, that " the evidence, as it stands to-day, although not conclusive, seems to place the first appearance of man in this country in the Pliocene," adding that " the best proofs of this are found upon the Pacific coast." The proofs, however, are a little shadowy, consisting of a stray bone or two, instead of stone axes and arrow-heads ; though it is clearer that some of the first inhabitants, whenever they came, entered from Asia by Behring Strait, the de- struction of the miocene bridge, which once existed there, not imped- ing their advance. It is unnecessary, however, to suppose that the glacial man was unable to find his way westward from Central EurojDe. THE GLACIAL MAN IN AMERICA. 35 The notion that man in that remote age could not navigate great seas is simply a notion, and likewise it is a notion that more than anything else prevents the advance of scientific inquiry respecting the early colonization of America. Two men in a skiff to-day navigate the en- tire breadth of the Atlantic, but such a feat forms no new thing under the sun. In the glacial age communication between Europe and Amer- ica may have been more easy than is now suspected, while a large por- tion of the journey may have been made over fields of ice. The passage of the glacial man from Europe possibly presented no greater difliculties than the migration of the Esquimaux from Labrador to Green- land. But, however man may have reached America, the theory that the Indian peoples sprang from any glacial stock seems untenable. This, then, necessitates the inquiry respecting the subsequent history of the primitive inhabitant ; otherwise, what became of him ? That a people corresponding in the main to the supposed glacial man once dwelt as far south as New Jersey has been agreed by vari- ous writers, without any reference to the contents of the glacial de- posits, of whose existence they did not dream. When, for instance, we turn to the Icelandic Sagas relating to America, it becomes appar- ent that the Esquimaux once flourished low down upon the Atlantic coast. At the present time historians agree, with great unanimity, that the continent of America was visited during the tenth and eleventh cen- turies by Icelanders resident in Greenland. That country was colo- nized by the Icelanders in the year 985, and when Eric the Red entered Greenland he found no inhabitants. The third Greenland " Narrative," however, says : " They found there, both east and west, ruins of houses and pieces of boats and stone-work begun. From which it is to be seen what kind of people lived in Vinland, and which the Greenland- ers call Skrsellings, and who have been there." * Thus at that early period the remains in Greenland were identified as works peculiar to the people of Vinland, a region, according to the Sagas, lying south- ward toward the forty-first parallel. The account of what the Icelanders saw in Vinland is found in the narratives of Leif and others. In 986 one Biarne, when sailing for Greenland, was blown upon the American coast, and upon his return carried the report of the country to Greenland. In the year 1000, Leif Erickson resolved to visit the region seen by Biarne, and, sailing southward from Greenland, reached the place. The narrative says : " The country appeared to them of so good a kind that it would not be necessary for them to gather fodder for the cattle in winter. There was no frost in winter, and the grass was not much withered." The observation that there was no frost was simply an exaggeration nat- ural to an Icelander coming into a country with a climate so unlike that to which he had been accustomed. Morton wrote home to Eng- * " Pre-Columbian Discovery of America by the Northmen," p. 20. 36 THE POPULAR SCIENCE MONTHLY. land that coughs and colds were unJcnottm in New England. Leif's narrative says nothing about any inhabitants ; but, in 1002, Thorvald, his brother, sailed to Vinland and found some people at a place a little to the northward of Leif's resort. The Saga says that one day, when opposite a cape, they " saw three specks upon the sand," and that, upon examination, they found that these were " three skin-boats with three men under each boat." Cruelly attacking them for the plunder, the Icelanders killed eight, while one man escaped with his boat. They also saw " several eminences which they took to be habitations." Afterward, they rested and fell asleep on board their vessels, only to be awakened by the natives, who had been notified by the man that escaped, and who had now come to avenge the death of their com- rades. When the alarm was sounded, " an innumerable multitude, from the interior of the bay, came in skin-boats and laid themselves alongside." The Northmen at once put up their " war-screens " on the gunwales, and, the Saga says, "the Skrajllings shot at them for a while, and then fled away as fast as they could." They did not retreat, however, before dealing Thorvald, the leader of the expedi- tion, his death-wound, it being given by an arrow which struck under his arm. Thorvald was buried on the shore, supposed to be the coast of Massachusetts Bay.* This is the first recorded collision between Europeans and those whom we propose to call the descendants of the glacial man. It shows them as strong and not wanting in the courage that would fit men for the struggle with nature during the great ice period that prevailed in America. In 1006 Thorfinn Karlsefne sailed to Vinland with an expedition, and reached the place formerly visited by Leif and Thorvald, where they wintered in a very mild climate. But one spring morning, while on an exploring expedition, apparently near Long Island Sound, when " they looked around, they saw a great many skin-boats and poles swung upon them, and it sounded like reeds shaken by the wind, and they pointed toward the sun. Then said Karlsefne, ' What may this mean ? ' Snorre Thorbrandson replied, * It may be that this is a sign of peace, so let us take a white shield and hold it toward them.' They did so. Thereupon they rowed toward them and came to land. These people were swarthy and fierce, and had bushy hair on their heads ; they had very large eyes and broad cheeks." The Northmen, how. ever, were not attacked, and remained there until spring, the statement being that " there was no snow, and all their cattle fed themselves on the grass." But in the opening of 1009 the Skrsellings returned, offer- ing "skins and real furs " for red cloth, the Northmen refusing to sell them swords and spears. Finally, a bull which belonged to the Iceland- ers began to bellow, when the Skraellings became frightened, and ran to their boats, rowing away south. At the end of three weeks, nevei'- theless, " a great number of Skrselling boats were seen coming from * "Pre-Columbian Discovery of America by the Northmen," p. 41. THE GLACIAL MAN IN AMERICA. 37 the south like a rushing torrent, all the poles turned from the sun, and they all yelled very loud." Karlsefne saluted them with his red shield, the sign of war, " and after this they went against each other and fought. There was a hot shower of missiles, because the Skraellings had slings." At the outset, Karlsefne was forced to retreat, but a rally was made, and the Skraellings retreated. It is also said that " two men fell on Karlsefne's side, but a number of Ski-sellings." The Saga states that Karlsefne was overmatched, so many natives appear- ing that it was difficult to believe that they were real men, but rather optical illusions. In connection with the fight an incident occurred which seems to show that the Skriellings belonged to a people of the stone age ; for one of them found an axe and cut a piece of wood with it, and thought it was a "fine thing." But when he tried to cut a stone it broke. Then " they thought it was of no use, because it would not cut stone, and they threw it away." It would appear from this that stone was their standard. Afterward, during a shoi't expedition northward, the Northmen found " five Skrsellings clad in skins, asleep near the shore. They had with them vessels containing animal marrow mixed with blood." These were killed. Soon after they fancied that they saw men with one leg called " Unipeds," and for this piece of imagination the narrative has been objected to as unreal, the objector forgetting that the Uniped is a very ancient institution frequently mentioned by sailors. Charlevoix reports a St. Malo captain, who, when in America, saw men with " one leg and thigh." A young Labrador gii'l captured in 1717 told of those her countrymen who had only one leg. Finally, Karlsefne decided not to expose his little colony, and pre- pared to sail for Greenland. On the voyage home they landed in Markland, supposed to be Nova Scotia, and " found there five Skrael- lings, and one was bearded, two were females and two boys ; they took the boys, but the others escaped, and the Skraellings sank down into the ground " ; that is, disappeared among the hillocks or slipped into their subterranean dens. The Saga says that the boys were taught Icelandic and were baptized. They called their mother Vathelldi, and their father Uvaege. They also said that two kings ruled over the Skraellings, one being named Avalldania and the other Valldida. These boys also reported that they had no houses in Markland, but that the people lived in "caves or holes." The second narrative of Karlsefne treats the subject of the Skrael- lings in the same way, except that these people were of " small stat- ure." The third narrative states that, when the bull (one of the small Icelandic species) began to bellow, the Skraellings " made off with their bundles, and these were of furs, and sables, and all sorts of skins ; and they turned and wanted to go into the houses, but Karlsefne defended the doors." Also, before the fight commenced there was more trading, and the women brought out " milk and dairy products," which pleased 38 THE POPULAR SCIENCE MONTHLY, the Skrrellings so much, that, as the Saga says, "they carried away their winnings in their bellies." Snch is the account that we have of the Skra^llings in the Sagas relating to America. These peoj^le do not appear to be referred to again in connection with the voyages, though a geographical fragment mentions "Helluland," which is called "Skrcel- lings Land," not far from Vinland the Good.* The delineation of the people found by the Icelanders in the mild regions of the Atlantic coast is brief, but it is sufficient to fix their character. Rafn, when editing the original Icelandic records, pointed out the fact that these people agree with the Esquimau and Green- lander of to-day. The critic who supposed that the Saga writer should have described a people with the characteristics of the red-man fan- cied that he found an error indicating their unhistorical character. The Indian, however, was a late comer ui^on the extreme eastern border of North America. Indeed, the oldest distribution of the American races does not antedate the tenth century, and therefore the appearance of the Skrcelling in the Sagas, instead of the Indian, is precisely what the truth required. It is hardly necessary to restate the points in the description ; for, instead of the tall red-man found by later voyagers on the coast, so gentle, kindly disposed, generous, and hospitable — traits wellnigh obliterated by subsequent contact with the Avhites — we have men of short stature, bushy hair, rude, fierce, and devoid of every grace. Also, here in a country covered with fine forest-trees, the principal article of value to the Icelander, the people made their boats of skin like the Greenland kyjaclc, instead of the bark or the trunks of trees, as often practiced by the Indians, and described by Champlain.f The men described in the Saga evidently did not know the use of metals, and they despised the axe when it was found that it would not cut stone. In the fight with Karlsefne's men they slew Thorbrand with a flat stone {hellusteinn), perhaps a celt, which they " drove into his head," thus illustrating, possibly, the rude warfare of the glacial man. Nor should it be forgotten that, while even in the dead of "winter the New England Indians wore almost no clothing, these men, encountered by the Icelanders were clad in furs after the spring had set in. Another resemblance is found in the fact that both the Skri^ellings and the Greenlanders used slings, the latter being mentioned by Davis, the first European who visited Greenland in modern times. But a still more valuable fact is mentioned by this writer in connection with the voyage of 1585. It has already been stated that, when in Vinland, Karlsefne found that the Skrsellings used to indicate peaceful inten- tions by pointing certain implements toward the sun, while, when turned from the sun, they indicated war. Thus in Greenland the natives, to indicate peaceful intentions, pointed to the sun with their * " Pre-Columbian Discovery," etc., p. 49. f " ffiuvres," tome iii, pp. 59, 60. THE GLACIAL MAN IN AMERICA. 39 hands, after striking their breasts, refusing to trust themselves with the English until the latter had done the same, through one of their num- ber appointed for the purpose, " who strooke his breast and poynted to the sunne after their order." Davis thus appears as dealing with descendants of the glacial man. If we are correct iu supposing that there was a glacial man, and that the SkroBllings were descendants of such a glacial man, it follows that we have in the Sagas four of his words, which may be the old- est known words of human speech: "Vathelldi," "Uvaege," "Avall- dania," and "Valldida," the names of the parents of the Ski-aelling boys and of the two kings. At least, in a recent note addressed to the writer, Professor Max Miiller says that there is nothing in the lan- guage of the Esquimaux to prevent us from assigning it to an antiq- uity as high as that of the supposed glacial man. During the eleventh century the red-man lived upon the North American Continent, while the eastern border of his territory could not have been situated far away from the Atlantic coast. In New England he must have succeeded the people known as Skrsellings. Prior to that time, his hunting-grounds lay toward the interior of the continent. In course of time, however, he came into collision with the ruder people on the Atlantic coast, the descendants of an almost am- phibious glacial man. Then the coast-dweller, unable to maintain his position, retreated toward the far north. The northward movement, however, may have been voluntary in part. During long ages passed in the companionship of the glacier, the race must have acquired that taste and fitness for boreal life which clings to the native of the north to-day, and which makes the Greenlander feel that his country is the most beautiful in the world. The advance guard of the Skraellings had reached Greenland be- fore Eric the Red arrived in 985. He found there, as we have seen, both houses and boats, but no inhabitants. It was inferred, at the time the Saga was committed to writing, that the remains belonged to a people of the same race as those seen in Vinland at the south. These early Skroelling visitors had either perished or retired from Greenland. The Icelanders do not appear to have met any Skraellings in Green- land until a late period — at least none are mentioned. But in the twelfth and thirteenth centuries the Skraellings crowded into Labrador and the regions bordering Baffin's Bay, preparatory to the movement across to Greenland, though many of them may have crossed to North Devon and entered at the northwest. It is probable that extreme necessity was all the while urging them on, the red-man crowding upon their rear with great energy. This is evident from the fact that, when the French entered Canada, the region north of the St. Lawrence was occupied by the Indians. The struggle between the Indians and the Skraellings was long continued, and one evidence of the contact may be found in the common use of a certain engine of 40 THE POPULAR SCIENCE MONTHLY. war, which the Saga says was employed by the Skrallings in their fight with Karlsefne. It is said, " Karlsef ne's men saw that they raised up on a pole a very large ball, something like a sheep's paunch, and of a blue color ; this they swung from the pole over Karlsefne's men upon the ground, and it made a great noise as it fell down. This caused great fear with Karlsefne and his men." The statement at first appears curious and almost childish ; yet in Schoolcraft's work on the Indians (vol. i, p. 83) may be found a description of a similar engine employed in the ancient times, when the red-man used to sew up a round bowlder in the skin of an animal, and hang it upon a pole borne by several war- riors, which, being swung against a group of men, did great execution. The Skrsellings may, therefore, have acquired the idea in their fights with the more skillful red-man then pushing his way into their terri- tory. Pursued by a superior force, we may conchide that the Skrsel- lings retreated into the north. Dr. Abbott himself is of this opinion, saying, " When, also, we consider that the several conditions of glacial times were largely those of Greenland and Arctic America, and that there is unbroken land communication between the desolate regions of the latter and our OAvn more favored land, and, more important than all, that there now dwells in this ice-clad country a race which, not only in the distant past, but until recently if they do not now, used stone implements of the rudest jDattern — it is natural to infer that the traces of a people found here, under circumstances that demonstrate a like condition of the country during their occuj^ancy, are really traces of the same people." That the country as far south as New Jersey was formerly adapted to boreal tribes is evident from the fact that the walrus has been found at Long Branch, while the great auk formerly flourished around the borders of Mount Desert in Maine. Dr. Henry Rink, who for so many years superintended the Danish interests in Greenland, and who studied the question without any reference to the glacial man, reached the conclusion that the "Esquimaux appear to have been the last wave of an aboriginal American race, which has spread over the con- tinent from more genial regions, following principally the rivers and watercourses, and continually yielding to the tribes behind them, until they have at last peopled the seacoast." Originally their distribution was very wide, and their language prevails to-day from Greenland to Labrador and the northeastern corner of Siberia. Professor Dawkins holds that the paleolithic cave-dwellers of Europe were of the same race as the Esquimaux or Innuit, though no such connection can be shown between them as exists between the ancient Skrasllings and the Esquimaux. The Icelandic records prove that the conflicts begun with the Skrsellings in the eleventh century in New England were renewed in the fourteenth in Greenland. Possibly it is to the Skrajllings that THE GLACIAL MAN IN AMERICA. 41 the final extinction of the Icelandic colony in Greenland may in part be attributed. Nevertheless, from the year 985 down to the vicinity of 1335, the Skrgellings, so far as the records go, do not aj^pear to have given any trouble. But about that period they suddenly appeared in force. At that time the western coast of Greenland was divided into two districts, called the East and West Bygds, there never having been any Europeans permanently inhabiting the eastern coast, though the Saga of " Thorgill's Nursling " shows that a family or two of Skraellings may have dwelt there. That the Skrcellings appeared in considerable force is indicated by the fact that an expedition was organized to meet them. The " Chron- icle " of Ivar Bardsen * shows that Bardsen himself was selected by the colonists as their commander. This " Chronicle " was composed during the second half of the fourteenth century, but it is impossible to say in what year. It is certain, however, that upon the 6th of August, 1340, Haquin, Bishop of Bergen, in Norway, commissioned Bardsen to act in Greenland, as the latter was born in that country, and was perfectly acquainted with all its affairs. His commission is still preserved at Copenhagen, and a copy may be seen in Rafn's " Amerikas Arctiske landes gamle Geographie," p. 47. Whether the Greenland colonists appointed him their leader before or after 1340, it is impossible now to say. Crantz, in his work on Greenland, inti- mates that the killing of some eighteen persons by the Skraellings led to the appointment of Bardsen. The natives gave Crantz a tradition respecting a fight between their Skraelling ancestors and the colonists, whom they called " Kablunaets." A quarrel sprang up about shooting arrows, and blood was shed, the natives declaring that the Kablunaets were exterminated. This may possibly explain what became of the remnant of Europeans left in Greenland in the fifteenth century, but it can not refer to the fourteenth, as the communication was kept up with Greenland during that period. It was in the year 1379 that the eighteen colonists were slain. "Islenzkir Annalar," page 331, says, under that year, that hostile Skraellings invaded Greenland, killing eighteen men, and carrying away two boys captive. It is probable that from this time the Skraellings proved formidable, though, when Bardsen went into the western district to meet them, they were no- where to be found, having either hid themselves or fled into the inac- cessible fastnesses of the north. He nevertheless secured some of the cattle belonging to the colonists, and returned southward to Avhat was called the East Bygd. In Bardsen's time the West Bygd was evi- dently abandoned, owing to the weakness of the colonists ; and he says, in his " Chronicle," that " now the Skraellings inhabit all the west land and Dorps." It must have been from the deserted West Bygd that they came to attack the colonists in 1379. The Ice- landic annals of the fourteenth century mention no more fighting in * Published by Munsell, Albany, as " Sailing Directions of Henry Hudson." 42 THE POPULAR SCIENCE MONTHLY. Greenland, and in the fifteenth century Greenland is not mentioned. In this manner Old Greenland passed from sight, and it was not until the seventeenth century that the country was reoccupied by Euro- peans. Some have supposed that the ancient colony was cut off by the plague, but the little remnant may have been exterminated by the* Skra^lings, as the modern natives averred. The foregoing brief statement of historical facts puts the modern Esquimaux, or Innuit, in connection with a ^^eople who dwelt along the temperate regions of the Atlantic coast in the eleventh century. It also indicates that these rude people were driven by a superior race into the far north, where they succeeded the Europeans. These peo- ple were also of very great antiquity. What, then, was their origin ? Who else could they have been than the descendants of a glacial man ? It is true that none of the bones exhumed on the Atlantic coast have been identified as those of the Esquimaux, though if they existed as late as the eleventh century such remains should be found. Hitherto, however, they have not been looked for, nearly everything exhumed being attributed to the red-man as a matter of course. Nevertheless, there have been those who have not felt satisfied with such a disjiosi- tion of the whole subject. In many localities of Maine, for instance, the opinion has prevailed of late that many of the shell-heaps were not of Indian origin, and that they should be referred to a more ancient people. Certain indications attracted the attention of the writer long before any glacial man was spoken of. On this point Dr. Abbott makes a suggestion, and argues that the stone implements found indi- cate two races, one much more advanced than the other. He writes : "W^hen we come to examine a full series of ordinary surface-found arrow-points, as we gather them by the score from our fields, and oc- casionally find associated with them a rude implement of the type of those found in the gravel-beds, we are naturally led to draw some comparisons between the two widely different forms. The arrow- heads and others, which from their size may be considered as spear- or lance-heads, are of two quite different types, being those made of jas- per, chert, quartz, and rarely of argillite, of a dozen different patterns, and those of argillite of a nearly uniform pattern, and of larger sizes as a rule ; all greatly weather-worn, and varying notably from the arrow-points of other minerals in being of much coarser workman- ship, and in this respect seeming to be a natural outgrowth of the skill once exercised only in producing the primitive forms of the glacial drift." But what have the modern Greenlanders to say respecting their origin ? They told Crantz that all the people of the earth originated from one man, who came from the earth, his wife springing from his thumb. This may be their version of what their ancestors learned from the Icelandic colonists who were Christians. Such stories throw no light ujDon their history, though the Esquimaux gave their family A FLOCK OF MYTHOLOGICAL CROWS. 43 genealogies for ten generations. There is nevertheless something in other accounts related by them which may possibly suggest traditions relating to changes that had taken place upon the globe in the past, and ti-aditions that might have come down from the glacial period, when Nature conducted her operations upon such a stupendous scale. It would appear as though their rude intelligence had argued what would take place in the future from what had transpired in the past. For instance, it was their belief at the time the missionary came among them, that all of the present race would become extinct, and the earth be broken up by some widely operating force, and then puri- fied by a vast flood of water, after which the dust of the earth would be blown together and become more beautiful than before, as the rocks would disappear, being covered with verdure. Now, in this was their fancy stimulated by traditions that had come down to them from glacial ancestors, concerning what we call geological epochs, or was this also taught them by the Northmen ? It is, perhaps, to be regretted that we have so few of these relations by the early Green- lander, as they might have proved useful in connection with the at- tempt to solve the question of his origin. Nevertheless, the case is by no means hopeless, and testimony may yet be discovered that will connect him beyond question with the glacial man. A FLOCK OF MYTHOLOGICAL CEOWS. Br W. H. GAEDNEK, M. D. PERHAPS there are but few persons who have read Poe's " Ra- ven," or Dickens's "Barnaby Rudge," who have not felt some curiosity to learn why ravens and crows, more than any other birds, should be invested with characters so ominous and demoniacal. And not only do these birds bear this ominous reputation in poetry and fiction, and in the legends and folk-lore of many of the nations of the earth, but by the unlearned they are still looked upon as too weird and uncanny for ordinary birds ; and many a person can be found even in this age of positivism who would consider a crow lighting upon his house-top as certain a harbinger of evil as Hesiod did, seven hundred and fifty years before Christ, when he said to his brother Perses, " Nor when building a house, leave it not unfinished, lest, mark you, perching upon it, the cawing crow should croak." * In this age, our plane of thought is so far above that of our rude and ignorant ancestors that their superstitions and myths seem too puerile to merit notice ; but when we study them attentively, with * Hesiod, " Works and Days." 44 THE POPULAR SCIENCE MONTHLY, the light which comparative mythology is able to throw upon them, we find that what at first seemed only childish fables are really de- graded fragments of the religion of our forefathers, and as such they are surely worthy of the attention of their descendants. In the infancy of mankind almost every system of mythology in- cluded the worship or veneration of animals. In one land the deity was a bull, in another it was a serpent, in yet another it was a bird ; and in lands like India and Egypt almost every known animal was either an incarnated deity or demon. The same reasons that caused the animal to be deified and worshiped would, in a short time, sur- round its worship with numberless myths and legends, that would be remembered long after the occasion that called them into existence had been forgotten. As an instance of this, we need only cite the return of the Israelites in the desert of Sinai to the worship of the golden calf — the image of the Apis god of the Egyptians — they jarob- ably being no more aware that under this eidolon was represented the sun-god in the zodiacal sign Taurus than were the mass of the Egyp- tians themselves. Still another reason why these myths and legends would remain long after their real meaning had been foi'gotten, is due to the metaphoric nature of all early languages ; and this cause would act still more strongly if the various shades of meaning of each meta- phorical term were not limited by accurate writing. Brinton says the Algonquins, who translated " Michabo " into " The Great Hare," lost by a false etymology a great part of their religion, the true meaning of the term undoubtedly being, " The Spirit of the Light " or " The Dawn." * The great storehouse of myth and fable for all the Indo-European nations is the sacred books of the Hindoos ; and it is here, among the religious beliefs of these old Nature-worshipers recorded away back in the morning of time, that we should first look for myths concerning the crow. In this curious pantheism all nature was divided into two opposing principles : the one containing all that was bright and life- giving and beneficent for mankind — devas ; the other including all that was dark and malignant and destructive — demons. Among these malignant powers of nature, we find frequent mention made of the crow, and usually associated with such ill-omened animals as the wolf and the owl. De Gubernatis says that in the Vedic hymns the term " vrikas " may mean both wolf and crow ; f but we find that, though the wolf and the crow were equivalent in many respects, and were both enemies to the devas or bright gods, yet the wolf was ahcays demoniacal, while the crow in some of its aspects was benig- nant ; and when the sun-god had finished his daily battle with drag- ons and monsters, and had sunk into the sleep of death, the crow bore him on his pinions down into the dismal land of darkness and the * Brinton, "Myths of the New World," pp. 178, 179. "I- Angelo de Gubernatis, " Zoological Mythology," vol. ii, p. 250. A FLOCK OF MYTHOLOGICAL CROWS. 45 dead. In the last book of the " Ramayana," we also find that, when the gods were fleeing before the demons, Yama, the god of the dead, borrowed the plumage of the crow in order to escape, in payment for which service he gave the crow the privilege of eating the funereal food. In the Grecian mythology, at least as early as the days of Hesiod, the character of the crow or raven (Kopa^), as a prophet of evil, had already been established (see ante, page 43) ; yet we find it here also sacred to the sun-god and usually associated with the same malignant animals as in the Hindoo mythology. Our Hellenic myths say that, " once upon a time, Apollo sent his feathered attendant, the raven, who was then pure white, to bring water for sacrifice, but the raven, finding a fig-tree with fruit nearly ripe, waited until it should mature, and he could appease his hunger ; then, having to account for his delay, he took a water-snake out of the fountain, placed it in the pitcher, and brought it to the god, and told him that the snake had daily drunk the fountain dry. But Apollo was not to be deceived by any such story, and, as a punishment for his crime, he turned the raven black, and condemned him to be tormented with thirst during the season that figs are ripening." * Another says that " Apollo was in love with a beautiful nymph of Thessaly named Koronis, but she was false to the god, and was surprised with another lover by the raven, who flew off without heed- ing her entreaties and told his master ; the god in a transport of jeal- ousy slew the faithless damsel, and then, angry at the tattling raven for bringing him the unwelcome tidings, he turned his plumage black." t In the Grecian myth of the battle between the gods and the giants, Apollo is said to have disguised himself in the plumage of the crow, as we have before seen was done by Yama, in the Hindoo version of the story. In the Roman mythology there were wanting many of the idealistic conceptions of the Greek mind, and even the glorious Apollo was not given a place in the Roman pantheon until a late day. Cicero says, " The whole religion of the Romans at first consisted of sacrifices and divination by birds." J Besides the sacred geese and chickens which were always on hand and kept in proper condition to consummate the " tripndlicm sollsti- miim,^'' whenever the good of the state required it, the Roman college of augurs divided all other birds, for the purposes of divination, into two general classes — Alites, those from which the augury was taken by observing their direction and manner of flight ; and Oscineo, those in which the augury was taken from the voice or cry. Of the latter class none were considered more sacred or more certainly omi- nous than the crow and raven, though Cicero says, " The croak of a * Eratosthenes. \ Ovid. X Cicero, " De Nat. Deorum." 46 THE POPULAR SCIENCE MONTHLY, raven on the right hand or a crow on the left was reckoned a good omen." * Early Roman history records more than one instance when the hoarse croak of the raven and warning voice of the crow have been heard and heeded in the councils of the nation, and sometimes even turned the doubtful issues of a battle. In the war with the Gauls which occurred in the consulship of Camillus, Livy tells us that " when the opposing armies were drawn up ready to join in battle, a Gaul of gigantic size stepped to the front and defied any one of the Romans to meet him in single combat. His challenge was accepted by Marcus Valerius, who was assisted in the fight by a crow, that, sud- denly appearing, lit on the helmet of the Gaul and attacked him with beak and talons until Valerius slew him, when the crow flew away to the east. The death of the Gallic champion brought on a general battle, in which the Gauls were beaten and forced to retreat. After this remarkable event, Marcus Valerius was surnamed Corvus." f Pliny tells of a sedition that occurred in Rome in consequence of the killing of a raven, and, though we can hardly relegate this prob- ably historic incident to the domain of mythology, yet it will serve to show the peculiar veneration in which these birds were held by the ancient Romans. He says : "A raven, that had been bred upon the top of the temple of Castor, flew down into the shop of a shoemaker which stood opposite ; the shoemaker took much delight in its visits, and taught it to speak, after which it would fly every morning to the rostra overlooking the forum, whence, addressing each by name, it would salute Tiberius, then the Caesars, Germanicus and Di'usus, after which it would greet the Ro- man people as they passed, and then return to the shop. For many years it was constant in its attendance ; but at length another shoe- maker, envious of the popularity of his fellow craftsman, killed it ; upon which the people became so enraged at the cruel and irreligious wretch that they drove him from the city and eventually put him to death. The funeral of the bird was celebrated with almost endless obsequies ; the body was placed upon a litter carried by Ethiopians, preceded by a piper, and was borne to the pile with garlands of every size and description." \ Among the Scandinavian gods, the highest throne was assigned to Odin — the Alfacler. And, though there was but little in his cruel and relentless character to remind us of the bright and life-giving Vishnu, or the glorious and benignant Apollo, yet there is no doubt but what he was another apotheosis of the sun, only with attributes so changed as to suit the ideal of a stern and warlike race, who had not only brute and human foes to contend against, but even to wage con- tinual war against Nature herself. In the Norse mythology, both * Cicero, " De Divinatione." t ^ivy, lib. vii, chap. xxvi. X Pliiiy, " Ilist. Nat.," lib. x, chap. Ix. A FLOCK OF MYTHOLOGICAL CROWS. 47 wolves and ravens were sacred to Odin. In the j)rose or elder Edda, which was the sacred book of the Odinic mythology, it is said, " Odin gives the meat that is set before him to two wolves, called Geri and Foeki, for he himself stands in no need of food." * And, again : " Two ravens sit on Odin's shoulders, and whisj^er in his ear the tidings and events they have heard and witnessed. They are called Hugin and Miinin (mind and memory). He sends them out at dawn of day to fly over the whole world, and they return at eve toward meal-time. Hence it is that Odin knows so many things, and is called the ravens' god.»t Turning now to the Semitic tribes, we will find that among them, also, ravens were held in greater veneration than any of their feathered congeners ; and more than one mention of them is made in the sacred chronicle as especial messengers of the prophets. In the Biblical nar- ration of the deluge, we read : " And it came to pass at the end of forty days, that Noah opened the window of the ark which he had made ; and he sent forth a raven, which went to and fro, until the wa- ters were dried up from off the earth." \ And, again, after the proph- et Elijah had foretold to the wicked King Ahab how the land would be cursed with drought, the word of the Lord came to him, saying : " Get thee hence and turn thee eastward, and hide thyself by the brook Cherith that is before Jordan. And it shall be that thou shalt drink of the brook ; and I have commanded the ravens to feed thee there. So he went and did according to the word of the Lord ; for he went and dwelt by the brook Cherith that is before Jordan. And the ra- vens brought him bread and flesh in the morning and bread and flesh in the evening, and he drank of the brook." § In the Babylonian legend of the deluge, as given in the fragments of Berosus, we have also the episode of the birds being sent out to see if the waters had subsided, but neither the raven nor the dove is es- pecially mentioned by name ; |j while in the legend as given by the old Arabian chronicler, Abou-djafar Mohammed Tabiri, he not only mentions the raven especially being sent forth first, but also gives the reason of his not coming back : " Noah said to the raven, * Go, and place your foot on the earth and see what is the depth of the water.' The raven departed ; but, having found a carcass, it remained to de- vour it, and did not return. Noah was provoked, and he cursed the raven, saying, ' May God make thee contemptible among men, and let carrion be thy food ! ' " ^ We have another legend — of the raven as a. grave-digger — which is given in Baring-Gould's " Legends of Old Testament Characters " as follows : " After Abel was slain, Adam and Eve sat beside the body and wept, and knew not what to do. Then said a raven whose friend was dead, ' I will teach Adam a lesson.' And he dug a hole in the soil, * Mallet's " Northern Antiquities," p. 430. f Mallet, he. cit. % Genesis, viii, 6, 7. § 1 Kings, xvii, 3-6. || Berosus in Cory's " Ancient Fragments." % Tabiri, c. 12. 48 THE POPULAR SCIENCE MONTHLY. and laid his friend there and covered him up. And when Adam saw this he said to Eve, ' We will do the same with Abel.' God rewarded the raven for this by promising that none should ever injure his young ; that he should always have meat in abundance, and that his prayer for rain should be immediately answered." From the same source Ave select one more legend, in which the ra- ven appears as the possessor of a valuable secret, which, upon compul- sion, it teaches the great king : " While Solomon was building the temple, he captured lachr, one of the most powerful of all the jinns ; and, having the demon bound and completely in his control, he prom- ised him his liberty if he would tell him how the hardest metals could be cut and shaped without noise. ' I myself know of no means,' an- swered the demon, ' but the raven can tell thee how to do this. Take the eggs out of the raven's nest and place a crystal cover upon them, and thou shalt see how the raven will break it.' Solomon followed the advice of lachr. A raven came and fluttered some time around the cover, and, seeing that she could not reach hei" eggs, she vanished, and returned shortly with a stone in her beak, named iamur or ichamir, and no sooner had she touched the crystal therewith, than it clave asunder. 'Whence hast thou this stone?' asked Solomon of the raven, ' It comes from a mountain in the far west,' replied the bird. Solomon commanded a jinn to follow the raven to the mountain and bring him more of those stones. Then he released lachr as he had promised. When the jinn returned with the stone ichamir, Solomon went back to Jerusalem, and distributed the stones among the jinns whom he had employed in building the temple." In the Egyptian mythology we have no single equivalent of the gloriovis sun-god of the Greeks ; and, though the Rosetta-stone has ex- plained to us the mystery of the hieroglyphs, and revealed the long- hidden meaning of many of the sculptured monuments and half -effaced papyri of the land of the Pharaohs, yet much of her curious mythology is a sealed book, and the attributes of some of her unique gods are still enigmas even to the most learned Egyptologists. Osiris, Aroueris, (the elder Horus), Harpocrates (the younger Horus), Chnum, Ra, Tum, and Mentu were all deifications of the sun during some part of the day or year ; but it is no easy matter to limit the peculiar province of each god, or give his exact equivalent in Greek thought ; and though He- rodotus and other Greek writers assert that Horus was the same as the Greek Apollo, even this throws but little light upon the subject, since there were two Egyptian gods bearing this name, and several (proba- bly deified) kings, one of whom restored the worship of the sun, after it had been forbidden by Amenophis lY, and had been neglected for nearly one hundred years. However, it is at least certain that Horus was worshiped by the Egyptians as the embodiment of the sun in a part of his course, and to him were sacred the hawk, the wolf, and the crow. Pritchard, quoting from ^olian's " History of Animals," says. A FLOCK OF MYTHOLOGICAL CROWS. 49 "The Egyptians reverence the hawk as sacred to Apollo, whom they name, in their language, Horus." * And again, quoting from the same authority : " The crow also was sacred to Apollo, or Horus. In the neighborhood of Coptos only two individual birds of this species were to be seen, which belonged to the temple of Apollo." f Coming now to the rude and primitive mythology of the red race of America, we find here also several tribes by which these birds were held sacred. And curiously enough, in the Algonquin myth of the deluge, we find both the raven and the wolf as attendants on Messon, the Great Spirit. Brinton quotes it from Father Le June as follows : " One day as Messon was hunting, the wolves which he used as dogs entered a great lake and were detained there. Messon, looking for them everywhere, a bird said to him, * I see them in the middle of this lake.' He entered the lake to rescue them, but the lake overflowing its banks, covered the land and destroyed the world. Messon, very much astonished at this, sent out the raven to find a piece of earth wherewith to rebuild the land, but the bird could find none ; then he ordered the otter to dive for some, but the animal returned empty ; at last he sent down the muskrat, who came back with ever so small a piece, which, however, was enough for Messon to form the land on which we are. The trees having lost their branches, he shot arrows at their naked trunks, which became their limbs, revenged himself on those who had detained his wolves, and, having married the muskrat, by it peopled the world." | In the Athapascan myth of the creation, the creative power takes the form of the raven. Brinton, quoting from McKenzie's " History of the Fur Trade," says : " With singular unanimity, most of the Northwest branches of this stock trace their descent from a raven, a mighty bird whose eyes were fire, whose glances were lightning, and the clapping of whose wings was thunder. On his descent to the ocean the earth instantly rose and remained on the surface of the water. This omnipotent bird then called forth all the variety of animals." § And again : " A raven, also, in the Athapascan myth, saved their ancestors from the general flood, and in this instance it is distinctly identified with the mighty Thunder Bird, who, at the beginning, ordered the earth from the depths. Prometheus-like, it brought fire from heaven, and saved them from a second death by cold." || A poetical description of this mythical bird has been given by Mr. Shelling, and is preserved in Griswold's collection of American poetry. We have room, however, for only a few lines of the poem : * Pritchard, " Egyptian Mythology," p. 317. \ Pritchard, op. cit, p. 819. X Brinton, " Mji,hs of the New "World," p. 225. § Brinton, op. cit., p. 211. II Brinton, op. cit., p. 220. TOL. XVIII.— 4 50 THE POPULAR SCIENCE MONTHLY. "About his burning brow a cloud, Black as the raven's wing, he wore ; Thick tempests wrapped him like a shroud, Eed lightnings in his hand he bore ; Like two bright suns his eyeballs shone, His voice was like the cannon's tone ; And, when he breathed, the land became, Prairie and wood, one sheet of flame. "Afar on yonder faint-blue mound. In the horizon's utmost bound, At the first stride his foot he set ; The jarring world confessed the shock. Stranger, the track of thunder yet ' Remains upon the living rock."* But besides the more ancient myths concerning crows and ravens, a volume might be filled with those degraded myths which, under the names of fairy-tales, or folk-lore {3Iahrcheti), are found in all the lan- guages of Europe; and though we can not follow each one, step by step, in its downward career, or trace all its varying phases with the same certainty that we can the metamorphosis of Odin into the wild hunts- man of the Hartz, or the dethronement of Jupiter and his decretion into Jack the Giant-Killer, yet there are always preserved sufficient distinctive features by which their parentage can be traced. In the Mecklenburg story of " The Three Crows," in the Grimms' collection, after Conrad had been beaten by his knavish companions until he was blind, and then robbed and tied to the gallows-tree, the three crows that perched over his head at night informed him how he could regain his sight, cure the sick princess, obtain a supply of water for the famishing town, and by so doing obtain the king's consent to marry the princess whom he had saved. f We rarely discover in any one story so many of the mythological characteristics of the crow as are associated together here ; the ill- omened gallows, the black night, the more than human wisdom of the crows, their knowledge of prophecy, and the healing art befitting Apol- lo's birds, their power of obtaining water, and lastly their malignant nature ; for when Conrad's wicked companions sat under the gallows- tree, hoping to hear the crows tell something for their advantage also, the crows fell upon them with wings, beaks, and talons, and buffeted them until they were nearly dead. In the story of "Faithful John," given in the same collection, we find the crows hei'e also possessed of more than human wisdom in addi- * A few mileg from Big Stone Lake, on the borders of Minnesota and Dakota, there is seen an impression in the rock, similar to the imprint of a bird's foot, with the toes nearly a yard long ; this track the Dakotas say is the footprint of the TJiunder Bird. f Grimms' "Popular Tales." A FLOCK OF MYTHOLOGICAL CROWS. 51 tion to the gift of prophecy. Faithful John, who understands the lan- guage of the crows, is enabled, by overhearing their colloquy, to save the lives of the prince and his bride ; his motives, however, are mis- understood by his royal master, who sends him to the scaffold, where- upon he tells the prophecy of the crows and explains all his conduct ; telling the secret, however, seals his fate, and while his master is beg- ging forgiveness the faithful servant is turned into stone.* This tale in varying forms is one of the most widely spread of all the stories of the Aryan tribes. Cox says it comes from the same source as the Deccan story of Rama and Luxman; and we find a some- what erratic form of it in the touching little story of Prince Llewellyn and his faithful hound Gellert. Philosophers at various times have attempted to account for this peculiar veneration of animals, which by many of the nations of anti- quity was heightened into worship, and which, among some of the rude and barbarous tribes of Africa and the South-Sea Islands, still exists as almost their only recognition of a religion.f But a bare recital of the numberless theories would serve no good purpose, and draw out this article to unnecessary length. There are, however, two theories which not only seem plausible, but which seem to be supported by the facts of history and the practices of the savage tribes of the present day. One is, that zoolatry is an outgrowth of a primitive worship of ancestors (necrolatry). The other is, that zoolatry as well as heliolatry, sabaeanism, sex-worship, and probably other cults, are all derived from a primitive worship of the deified powers of nature (pantheism). Though history affords many noted examples of the apotheosis of ancestors, and particularly in the patriarchal form of government, when the ancestor was also the ruler, yet it is only since the scientific study of ethnology has become general that the means have been afforded students of becoming acquainted on any extended scale with the crude and primitive beliefs of the lower races of man. After the examination of a great mass of facts bearing upon the subject, Herbert Spencer arrives at the conclusion that the first ideas of ghosts or other supernatural beings have arisen in the mind of primitive man through the agency of dreams, somnambulism, trance, catalepsy, and other analogous conditions ; and that the same condi- tions are continually reproducing the same ideas in the minds of his more civilized descendants. This alter ego, which exists in the dreams and visions of the primitive man, he believes also exists during the sleep of death ; and that it is then more j^owerful than during life, and is able to perform not only all the vagaries and metamorphoses which he believes have actually occurred during sleep, but is also able to enter into and take possession of the bodies of animals, and even other human beings. As the vague notions of ghosts and spirits grow into * Grimms' " Popular Tales." f Sir John Lubbock, " Origin of Civilization," chap. v. 52 THE POPULAR SCIENCE MONTHLY. definiteness by the corroborating testimony of other members of the tribe, there would naturally arise a desire to gain the favor or avert the displeasure of these powerful beings by gifts and offerings similar to what would have given pleasure during life ; these offerings would usually be made at the grave, cave, or house where the dead body was laid, and thus the tomb would become an altar or temple, as we see the tomb and temple associated even in civilized communities. In addition to the belief that the ghost of a dead ancestor or relative has the power to pass into the body of a beast, is the fact that the lan- guages of the lower races of man are so imperfect that metaphorical names require to be interpreted literally, and consequently primitive speech is unable to transmit to posterity the slight shades of difference between an animal and a person named after that animal ; moreover, having no knowledge of proper names, naming after animals, from some fancied resemblance or association of ideas, is most common, and hence we find such names as Black-Hawk, Little-Crow, Lone-Wolf, and Sitting-Bull. In the course of a few generations these animals would be looked upon as the ancestors of respective tribes, and would be reverenced and sacrificed to as deities. Besides explaining animal- gods, this hypothesis accounts for sundry anomalous beliefs, the divini- ties half -brute and half-human, the animals that talk and play active parts in human affairs, the doctrine of metempsychosis, etc.* On the other hand, the pantheistic theory assumes that whatever caused the sentiment of awe, wonder, or fear, in the mind of primi- tive man, would be deified and worshiped ; that the first objects that would excite these emotions would be the sun, moon, and stars, clouds, wind, rain, thunder, lightning, etc. ; that from their ignorance of even the rudiments of physical science, together with the want of exactness of early language and its wealth of metaphor and personification, these cosmic objects and forces would be conceived of as individual entities, each having absolute personal volition : and since these metaphoric names would vary with the varying conception of each one of these fervent old pantheists, there would thus arise that almost endless polyonomy which has been the fertile source of so many of the myths that have puzzled and horrified mankind ever since their origin was forgotten. Moreover, since all metaphors depend upon some real or fancied resemblance of things less known to things better known, all of these deified powers of nature would be invested with forms and attributes similar to the animals and men with which they were already familiar, though in a magnified degree ; and from this conception, by a very natural and usual transition of thought, the human or animal form, which had at first been sacred only as the eidolon of the god, would in a short time be thought to possess some intrinsic sanctity independent of that divine association.! * Herbert Spencer, " Principles of Sociology," vol. i, chaps, xv to xxv. f Cox, " Aryan Mythology," vol. i, chapters i to v. A FLOCK OF MYTHOLOGICAL CROWS. 53 There are many arguments in support of both of these theories, the chief objection being that either one alone is too exclusive to account for all the facts ; for, while there can be no doubt that ancestor-worship was the primitive and only religion of many, possibly all, the tribes of the earth at the dawn of their civilization, yet it is also certain that when tribes had formed settled communities, and a higher grade of culture had been attained, ancestor-worship was supplemented or sup- planted by a worship of nature. And since to primeval man none of the powers of nature seemed so beneficent or worthy of adoration as the sun, helioiatry was one of the most widely spread of all the religions of antiquity, and the daily conflict between the sun-god and clouds and darkness a never-ending theme for poet and priest. And as the incidents of these oft-repeated battles were handed down orally, from generation to generation, decked in all the glowing metaphors of exuberant fancy, the real nature of the deity they described and the celestial battles he waged would gradually be lost and forgotten, while the metaphoric names and metaphoric inci- dents would " survive the wreck of time " and come down to historic ages as actual incidents in the lives of real gods. And it is in this mythological contest between the sun-god and the powers of darkness that we will find the origin of the demoniacal char- acter of crows and ravens, these birds always representing in ancient thought the dark and terrible night, or the black and howling storm- cloud, the natural and necessary opponents of all that was bright and divine and good, of which the sun was the source and origin, Nor were these metaphors far-fetched or inappropriate, the darkness of night settling silently down over the calm, still earth might not inaptly be compared to the descent of some black gigantic bird ; and, to de- scribe the fierce storm-cloud rushing through the sky " on the wings of the wind," no metaphor could be more exact than to liken it to a huge, ravening bird of prey. In most of the myths herein cited, the cloud seems to be the more exact equivalent of the bird, though in the earlier Hindoo mythology the cloud and the night are often converti- ble. The crow, as the metaphoric name of the cloud, also explains the connection of these birds with water, which we find not only in legends of the deluge but in many others. The first Greek myth given is a degraded version of one of the nu- merous Hindoo myths of the god Indra, who slays the black dragon that has shut up the fertilizing waters : the lohite raven is the fleecy cloud of summer that contains no moisture ; but, as autumn advances and figs ripen, the cloud grows blacker and brings rain. It is worth noting, also, that the monstrous dragon of India shrinks into an in- significant water-snake when transported to the less rank soil of Hellas. In the Greek myth quoted from Ovid, we have another of those widely-spread myths of the sun and dawn. Koronis {Kopwviq) is the 54 THE POPULAR SCIENCE MONTHLY. beautiful (crown of light) Aurora, surprised by the morning cloud, the raven, in the embrace of another lover, the night. In the Norse mythology the ravens that sit on Odin's shoulders are the clouds that are seen on either side of the rising sun. As the sun mounts higher and the heat increases, the clouds are dissipated, to re- turn again in the evening vs^hen the air is cooler and the sun sinks into the western sea. The wolves have doubtless the same nebulous origin as the ravens ; the name of one of them, FreJci, most probably being a reminiscence if not a direct derivative of the Sanskrit vrikas (wolf), which, as we have before stated, in the Vedic hymns signifies the black night or the howling storm-cloud. In the Semitic languages, from the prolific root arah, one of the meanings of which is to be black, was formed the Hebrew oreb (raven), ereb (evening, land of the setting sun), etc. From the same root also come Erebos and Arabia • hence, on linguistic grounds alone, it is im- possible to decide whether Elijah was fed by the ravens or the Arabians. The legend of Schamir is found in most of the languages of Europe, but in variously modified forms. In one place it is a stone, in another a worm, and in yet another it is a plant. Their agreement, however, in the power to rend rocks and to discover hidden treasures shows the origin of the myth to have been the storm-cloud which carries the thunderbolt, and with it rends the hardest rocks. In the Egyptian mythology the reason assigned for dedicating the hawk to Horus is the bold flight which the bird is observed to make toward the sun without being dazzled by its rays ; * but the reason for dedicating the crow to the same god is not so apparent, though it is probable that under the forms both of the wolf and the crow was rep- resented the black night as an invariable and necessary follower of the god of day. .^lian says that in the temple of Apollo at Delphi was the statue of a wolf, and that the reason the wolf was sacred to this god was because he was born of Latona, or nursed by her, under this form.f It was doiibtless ^ wolf of the same species that suckled the warlike twins of Silvia, at a later age, on the banks of the Tiber. In both the Hindoo and the Greek mythologies we find the owl intimately associated with the crow — the owl, like the crow, being one of the demons of the night ; but, as the owl was the representative of the bright night, or the moon, there was a constant warfare going on between them. The Pancatantra describes a battle between the owls and the crows, the casus belli being the opposition of the crows to the owl being elected king of birds. Aristotle, too, gravely informs us as a fact of natural history that " the crow and the owl also are ene- mies, for at mid-day the crow, taking advantage of the dim sight of the owl, secretly seizes and devours its eggs, and the owl eats those of the crow during the night." J * Pritchard, op. cit, p. 318. f ^lian, "Hist. Animal.," lib. x, chap. xs. X Aristotle, " Hist. Animal.," lib. ix, chap. ii. A FLOCK OF MYTHOLOGICAL CROWS. 55 Whether an observance of the habits of crows led to their being selected, in the first place, to represent the dark and evil principle, can not now be told, but it is very certain that their feeding upon dead bodies, frequenting battle-fields and plague-infested districts, would add to and intensify their ominous reputation, even if it did not originate it ; moreover, being constantly associated with death in its most repul- sive forms, and from their keenness of scent and vision being able, apparently, to foretell the death of an animal or human being, their very presence soon came to be regarded as a foreboding of evil. This keenness of scent and vision and their straight, vigorous flight were taken advantage of by the old Norse sea-rovers, who made use of these birds as pilots to guide them on their murderous forays and voy- ages of discovery. According to the " Landnama Book," one of the earliest records of Iceland, about the year 865 a. d., Floki, one of the most famous Vikings of that day, having performed a great sacrifice and consecrated three ravens to Odin, started from Norway on a voy- age of discovery. After touching at the Shetland and Faroe Islands, Floki steered northwest for the open sea, and when he was fairly out of sight of land he turned loose one of his ravens, which, after rising to a great height, flew off toward the land they had left. From this Floki concluded that he was nearer these islands than any other land. After proceeding on his course some days longer he "let fly " another raven, which, after being some hours on the wing, returned to the ves- sel. Floki continued his course, and after a few days more let loose his third raven, and followed the direction of its flight until he reached the eastern coast of Iceland. In Callimachus's hymn to Apollo, we also have mention of a pilot- crow being sent by the god to guide the tongue-tied Battus to Libya, where the Python had declared that he must found a colony. And, again, Plutarch tells, on the authority of Callisthenes, that when Al- exander crossed the Libyan desert to consult the oracle of Jupiter Ammon, he was directed by a flock of crows, that suddenly made its appearance, and guided him on his way, flying briskly ahead when he was on the march, lighting when he halted, and, what is stranger still, when he was going wrong calling him by their croaking until he was in the right direction again. We might also mention, in this connec- tion, the story Herodotus tells of the ubiquitous Aristeas, whom the Metapontines say appeared in their country, and told them to erect an altar to Apollo, and place near it a statue bearing the name of Aristeas the Proeonnesian, for Apollo had visited their country only of all the Italians, and that he who was now Aristeas had accompanied the god in the shape of a crow. Another characteristic of crows is their longevity. Hesiod as- serts that they will live nine times as long as a man, and it is certain that they have attained an age of more than one hundred years. On this account the sorceress Medea, with many other ingredients of a 56 THE POPULAR SCIENCE MONTHLY. peculiar nature, placed a crow's head and beak in the magic caldron when she was compounding the " elixir of life " to rejuvenate the de- crepit Aeson. Still another peculiarity of this family of bii-ds is their human-like voice. All of them are easily domesticated, and nearly every variety can, without much trouble, be taught to speak. In some species, par- ticularly the jabbering crow [Corvus Jamaicensus), their voices are so similar to those of human beings that, at a short distance, it is almost impossible to distinguish them apart. But, while the ability to articulate probably first caused the crow to be regarded as a prophet, its evil habits, funereal associations, and metaphoric opposition to the sun-god caused it to be looked upon as a prophet only of evil, and as such it has always been regarded in my- thology, legend, and popular tradition. It seems curious that the figments of extinct mythologies should come from the dim and misty past, down through the ages, and still exist in the enlightenment of the present day ; and yet we know that the debris oi these effete religions not only survive in the legends and folk-lore of all the lands now civilized, but to a certain extent adulterate their manners and customs, their laws, and even their forms of religion. A veneration for old manners and customs and the religion of his forefathers is imbibed by the child almost with his mother's milk ; the sentiment grows with his growth and strengthens with his strength, until, when adult age is attained and the mind should be sufficiently mature to inquire into the truth and propriety of what he has been taught, the judgment has already become so prejudiced, by years of unquestioned obedience and unconscious imitation, that to defend and perpetuate even the errors and superstitions of his forefathers appears to him a solemn duty nearly akin to religion. ■♦«» THE ELECTKIC BUEGLAE-ALAEM. ELABORATE as are the ordinaiy agencies for the protection of property, they afford but a partial security. Well-lighted streets, careful watchmen, numerous policemen, and strong and in- geniously arranged bolts and bars, are certainly obstacles not easily overcome. But, in his quest of other men's riches, the accomplished burglar has not found them insurmountable. However extensive and vigilant a police force, it can not have all points under its surveillance at once, and this gives the burglar the opportunity which he rarely fails to improve. Bolts and bars are, doubtless, good things in their way ; but the experienced cracksman has a cunning beyond them. In the contest between him and the locksmith, the victory has not always been with the latter, though he has produced that marvel of skill and THE ELECTRIC BURGLAR-ALARM. 57 workmanship — the modern safe-lock. The burglar's tools are not such as are thwarted by nice mechanical combinations. Explosives and the simple mechanical powers in his hands have a wonderful range of utility, and are able to frequently set at naught the most elaborate contrivances. The protection afforded by these combined agencies is, however, only realizable to its full extent in the business centers of large cities. In resident districts, and in suburban and country situa- tions where policemen are often few and far between, reliance has chiefly to be placed upon fastenings ; and these often prove insufii- cient. Yet it is especially important to the owner of property that his protection be good, for recovery is very difficult. The advan- tages are so largely with the thieves, that they can frequently make the search a long and costly, and often a fruitless one. The cost is, in fact, the main bar to recovery. Only when stolen property is of large value does it pay to regain it. Small amounts, such as are usually taken from private houses, are practically irrecoverable. No practicable extension of the ordinary agencies can greatly in- crease present security. Bars and bolts have now approached very closely to their limit of strength and ingenuity, and police surveil- lance is as extensive and perhaps as effective as circumstances will per- mit. Greater protection must be sought in some further agency — one that will reproduce as nearly as possible the condition of watchfulness present in the daytime. This the electric burglar-alarm is designed to do, and does with a good degree of success. In its earlier forms there were many defects, but in a development of twenty years these have been mostly corrected. It has now attained to a simplicity of construction and certainty of action that make it one of the most use- ful and trustworthy of man's servitors. Though widely known and ap- preciated both in this country and abroad, there are probably many not acquainted with it, to whom a brief description will not be without value- However the details of construction differ, the essential elements of every system are, a bell to give the alarm, an annunciator to indicate the point from which it proceeds, wires from all the openings of a building, and a battery to furnish the current. These elements are combined in various ways, depending upon the special circumstances of the particular case, but the manner of use is practically the same. The main piece of apparatus, remarkable alike for the simplicity of its construction and the range of its performance, is the annunciator. In the earlier forms of the alarm, the indications were made by means of a simple switch-board provided with buttons bearing the names of the apartments protected. When an alarm sounded, the depression of each of these buttons in turn, until the bell ceased ringing, was neces- sary to determine its locality. This is still quite largely used, as it is cheaper than the more perfect annunciator, which tells at a glance where the disturbance in the circuit is. In shape and size this latter instrument resembles an ordinary mantel-clock. The indications are 58 THE POPULAR SCIENCE MONTHLY. Fig. 1. given by devices on the face, which vary with different makers. In one form they are made by arrows, which lie horizontal Avhen in nor- mal position, and point to the names of the apartments j^rinted above them when indicating. In another form, cards drop down in front of apertures arranged in rows on the face, and in still another the name and number of a room are uncovered by a falling piece when an alarm is sounded. The needle- instrument is shown in Fig, 1, Once made, the indications remain until the parts are restored by some one, A small switch at one side completes or opens the circuit through the instrument, and one on the other side controls the con- nection with the bell, A row of studs at the base of the apparatus allows any opening to be disconnected that may be desired. Aside from its giving an alarm when an attempt is made to enter a build- ing, the annunciator has an important use in showing whether a place is proper- ly closed. If any window or door has been forgotten, it will infallibly point it out. In large business houses where there are many oj^enings, this feature is of the greatest value. By disconnecting the bell, this test can be made a silent one. The mechanism ojierating the indicators is of the simplest descrip- tion. In the needle-instrument, an arm on the j^ivot of the needle is held in jjosition by the hooked end of a lever, the other end of which forms the armature of an electro-magnet. The connection between the lever and the supported arm is very slight, so that a small move- ment of the former allows the latter to fall. When the circuit is closed this takes place. The armature in moving toward the magnet raises the hooked end of the lever, releasing the arm which drops and turns its needle. In the instrument using the card, the card is carried on the end of an arm held up in a similar manner by a hook on the armature of the magnet. The depression of the armature allows the arm to drop by its weight. The restoring of the arms to position is done by a sliding frame raised by a handle or button on the base of the instrument. Delicate as the movements of the appara- tus are, it is not easily put out of order. The points of contact of the hook and arm are so made as to reduce the wear to a minimum. The mechanism is all inclosed, and the exposed parts, such as the needles, switch-handles, etc, finished in polished metal. The annunci- ator and bell are usually combined into one piece of apparatus, but they may be put up separate when desired. THE ELECTRIC BURGLAR-ALARM. 59 The bell used is that common with different forms of electrical instruments. It consists of a gong and a clapper vibrated by the com- bined action of an electro-magnet and a spring. The magnet, when the current passes, draws 'the clapper to itself and in doing so opens the circuit ; this destroys its magnetism and allows the spring to carry the clapper back. This " make " and " break " action, rapidly repeat- ed as long as the current is passing, produces a continuous ringing of the bell. Reference to Fig. 2 * will make this movement clear. Fig. 2. One end of the wire of the coils of the magnet M M is secured to the binding-post B, and the other to the post C. The arm of the clapper k is a rather stiff spring, which in its normal position holds the arma- ture e carried by it from the poles of the magnet. It then presses against the spring r, attached to the post D. The posts A and E holding the wires from the battery are respectively connected with B and D by metallic sti'ips. The current enters at A, traverses the coils of the magnet M M, passes through the armature e, and out by way of spring r and posts D and E. In doing so, the soft-iron cores of the magnet are magnetized and attract the armature e. This in moving breaks its contact with the spring r, and interrupts the cm-rent. The clapper then springs back into position. In the bell now generally used the ringing continues not only while the door or window is open, but until the indicating parts of the annun- ciator are restored to position. * Figs. 2 and 3 are reproduced, through the kindness of Mr. George B. Prescott, from his works on " The Electric Light," etc., and " Electricity," etc. 6o THE POPULAR SCIENCE MONTHLY. This secures the proper resetting of the apparatus in readiness for a new alarm. The result is obtained very simply by making the clap- per turn a switch, which cuts from the circuit the opened window or door, and allows the current to pass directly from the battery to the bell. The door and window attachments for closing the circuit by the movements of these parts are of various forms. Those used on doors are simply little push-pins placed in the casing. The pin slides in an insulated case provided with metallic strips. When it is pressed in, the contact between it and the strips is broken and the circuit opened. When the pressure is released, the pin springs out, closing the circuit. The slightest movement of a door allows this motion of the pin to take place. In one form the pin and a metallic casing are so arranged that the attempt to keep the pin pushed in, when the door is opened, by inserting a knife-blade, establishes the circuit and gives the alarm. These push-buttons may be constructed to close the circuit, either by pushing in or springing out, and in both forms have a great variety of uses. They may be placed under the carpet, in the hall, on the stairs, in front of a window, or wherever any one entering would be liable to step. A sufficient number properly disposed could make intrusion without giving an alarm simply impossible. The window attachments are usually simple springs placed in the casing so that the movement of the sash presses them together. One form consists of a roller on the the end of a spring arm, which keeps it pressed out from contact with a metal strip, through which the circuit is completed. Placed in the casing, the roller stands out and is received in a pocket in the edge of the sash, so that the motion of the sash brings the roller arm and metal strip into contact. For the purpose of ventilation, the j^ocket in the upper sash is usually elongated to give a free movement through any desired distance. When the lower sash is left open, security can be gained by covering a push-pin in the window-sill with a flower-pot or other obstruction, the removal of which is necessary to gain entrance. Tlie wires forming the circitit are of insulated copper, carefully put up so as to be completely hidden from view. They are run in grooves in the wood-work, carried beneath a floor, or on its face, according to circumstances. Once in place, they remain unchanged for any period, causing neither trouble nor expense. The Le Clanche battery, shown in Fig. 3, is the one universally employed with this apparatus. It is very simple in construction, ex- hales no noxious gases when in operation, does not waste the material when no current is passing, and needs but very little attention. The positive pole is a piece of gas carbon placed in a porous cell filled with coarse-grained peroxide of manganese and carbon. The cell is sealed at the top with pitch, and a lead cap on the carbon receives the wire. The negative pole is formed of a rod of amalgamated zinc. Both poles are immersed in a solution of sal-ammoniac contained in a glass THE ELECTRIC BURGLAR-ALABM. 61 jar. Four of these elements put up in a wooden case constitute the battery usually furnished. These appliances provided, the most common way of using the system is to make it complete in each building, the alarm apparatus being placed in a sleeping-apartment in a private house, and in the Fig. 3. watchman's room in a place of business. So arranged, the condition of the circuit is this : In the daytime, when the doors and windows are open, the circuit is continuous at all points except at the alarm appara- tus. At night this is reversed, the circuit being closed at the instru- ment, and broken at all the points protected, A movement at any of these points which closes the circuit gives the alarm and turns the proper needle on the annunciator. The connection with the alarm is made at night by an attendant, and broken at any desired time in the morning. In private houses fitted with electric bells, a clock is often provided that disconnects the alarm in the morning and turns the cur- rent on to a bell placed in the servants' room. The movement by which this is done is something similar to that of the ordinary alarm- clock. The protection afforded with such an apparatus in good working order is probably as perfect as it can be made. It is generally impos- sible to cut the wires from the outside of the building, and unless this is done intrusion will start the alarm. Even if the wires be cut, but- 62 THE POPULAR SCIENCE MONTHLY. tons under the carpet or circuit-closers in interior doors will reveal the burglar's presence in perhaps every case. Valuable as is the protection in any i^articular case of attempted robbery, the general immunity from such attempts that the presence of the apparatus secures is of still gi-eater moment. Burglars will not generally take such risks as those imposed by an efficient alarm system, and will therefore give a house so protected a wide berth. The only case in which there is room for failure of the system is when the bat- tery power is not sufficient to operate the alarm. But it is a very simple matter to provide against this. Tests once every month or two, and the experience soon gained in using the battery, will enable one to know at any time the state of the system. None of the other parts need ever cause any solicitude. While in the great majority of cases the plan of giving the alarm to some one in the building broken into affords perfect security, in some it does not. In business centers, determined and cunning burg- lars, accustomed to take large chances, might frequently overpower the watchman and stop the alarm before it excited outside atten- tion. To meet this difficulty the j^lan is sometimes adopted of mak- ing the alarm sound in a central office of the company furnishing the apparatus. One company doing this has adopted a system that seems to be beyond circumvention. Each building protected is con- nected on a closed circuit with the central office, at which place deli- cate galvanometers are used as indicators. The circuit of each build- ing is independent of all others. Any change in the resistance of any circuit is instantly shown by the deflection of the proper needle, and an alarm started. The opening of a protected door or window breaks the circuit, as does the cutting of the line, and of course gives an alarm. If the burglar could carry the wire to the ground and insert just the proper resistance, no signal would be given at the company's office, but this is impossible, as the resistance is not only that of the wire but of the apparatus in circuit. The only way to get around it is to tunnel under the building, but even then cir- cuit-breakers judiciously disposed would generally lead to detection. Nothing is gained, so far as the safe is concerned, in this case, as it is independently protected. It is placed in a light wooden cabinet lined with a metallic casing, consisting of two sheets of tin-foil insulated from each other by a thin sheet of non-conducting material. The wii'es from a battery are connected each with one of the sheets of foil. So delicate is the insulation that the sticking of a pin in the cabinet closes the circuit and deflects the needle, and sounds the alarm in the central office. This system, though not yet in extensive use, is gaining in favor among merchants having valuable stores of goods. A similar plan of protecting private houses whose occupants are away is prac- ticed to some extent. The apparatus used in this case is much less delicate, and the protection therefore not so good. THE ELECTRIC BURGLAR-ALARM. 63 The cost of applying the burglar-alarm to any house will vary in each case. It depends upon the size of the annunciator required and the number of openings to be protected. The prices charged by the different American manufacturers differ very little. Annuncia- tors range in price from thirty dollars with four indications to one hundred dollars with twenty. The annunciator used should have as many indications as there are rooms protected. The cost of circuit- closers, including the placing in position and laying the wire, is three dollars a window when both sashes are connected. The same devices for doors vary from one and a half to two and a half dollars. In ordinary city houses it is only necessary to connect the windows and doors, front and back, of the first two stories and the opening in the roof. The entire cost will not generally exceed one hundred dollars. In the country the cost would of course be somewhat greater, in the average house probably between a hundred and fifty and two hundred dollars. The apparatus once in, the only expense is the main- tenance of the battery. This will generally be very small, probably not more than a dollar a year. Considering the security gained, the outlay required is not excessive, and builders find that it is fully made up to them in increased rents. It is not improbable that the apparatus will eventually be considered as necessary to the complete equipment of a house as now are water- and gas-pipes. Intimately connected with the burglar-alarm system, though having a different object, is an automatic fire-alarm, somewhat extensively in- troduced during recent years. The system consists in placing in the ceiling of a room a number of mercury bulbs, which close an electric circuit when the temperature rises above a certain point and set off an alarm. One form of the bulb or thermostat is shown in Fig. 4. The wire from the lower end is in permanent contact with the mercury, but that in the upper end comes in contact with it only when a given temperature is reached. The bulbs are usually manufactured to make this contact at a temperature of 120° Fahr. The thermostat is set in a bell-shaped shield of sheet- metal, only the rim of which, when in the ceiling, is exposed. They are placed about twenty feet apart in large rooms, a couple being sufficient for those of ordinary size. This alarm, like that for burglars, may be complete in a building, or may give its signal at a central office. In some of the larger cities this latter plan has been carried into practice. Each building is provided with an annunciator placed on the front, where it can be readily inspected. The signal given at the office indicates the building, and the annunciator on the face of the building gives the room in which the fire is located. Fig. 4.— Tnnp.MOSTAT. 64 THE POPULAR SCIENCE MONTHLY. Together these alarms form an excellent protection against the two most common dangers to which buildings and their contents are exposed. The addition of the call-bell system, now so common in hotels, business houses, and the better class of residences, comj^letes an electrical equipment that leaves little to be desired in the way of se- curity and convenience. MENTAL IMAGEKY. By FRANCIS GALTON, F. E. S. THERE are great differences in the power of forming pictures of objects in the mind's eye ; in other words, of visualizing them. In some persons the faculty of perceiving these images is so feeble that they hardly visualize at all, and they supplement their deficiency chiefly by memories of muscular strain, of gesture, and of posture, and partly by memoi'ies of touch ; recalling objects in the same way as those who were blind from their birth. Other persons perceive past scenes with a distinctness and an aj)pearance of reality that differ little from actual vision. Between these wide extremes I have met with a mass of intermediate cases extending in an unbroken series. "We must establish clearly what we are talking about by contrast- ing in general terms the physiological basis of sight itself with that of sight-memory. Let us put the question to ourselves, " "What should we expect to be the effect on our nervous system, first, when a sudden light is flashed on the eye, and, secondly, when we recall an image of that flash ? " If we had means of watching what took place, we should no doubt be aware, in the first case, of a sudden irri- tation in the sj^read-out terminations of the oj^tic nerve behind the retina. This would raj^idly propagate itself along the nerve itself to the brain, where it would be distributed in various directions, becom- ing confused with other waves of irritation proceeding from indepen- dent centers, lingering here and there longer than elsewhere, and finally dying away. In the recollection of a flash a similar sequence of events would take place, but they would occur in the reverse order. A variously distributed irritation in the brain, due to one or more of a multitude of possible causes, into which we need not stop to inquire, would prop- agate itself outward, becoming fainter the farther it traveled. The same links of the same nervous chain would be concerned in both cases, but the tension would be differently distributed among thein. "When the faculty of sight-memory is strong, the vigorous propagation of a central impulse toward the optic nerve must be habitual ; when it is weak, the propagation will not take place except in peculiar states MENTAL IMAGERY, 65 of the nerves, as in dreams, in delirium, in high excitement, or under the influence of certain drugs. These physiological considerations, vague as they are, will never- theless suflice to establish the existence of a true kinship between men- tal imagery and ordinary vision. They enable us to define Shakes- peare's phrase of seeing " with the mind's eye " as a condition in which the activity of the nervous center bears a higher ratio to that of the nervous terminations than it does in actual sight. They also justify us in ascribing the marked differences in the quality, as well as the vividness, of the mental imagery of different persons, to the various deo-rees in which the several links of a long nervous chain are apt to be affected. The mental images of which I am about to speak are those which are habitually suggested by well-known associations. Even when the subject is thus limited, it is almost too large for the compass of a sin- gle memoir. Therefore, I shall do my best at present not to encroach upon that other very interesting branch of it, which treats of the vis- ions and hallucinations that flash into view without any connection with the subjects of conscious thought. It is my purpose to point out the conditions under which mental imagery as above defined is most useful, and the particular forms of it which we ought to aim at de- veloping; and I shall adduce evidence to show that the visualizing faculty admits of being educated, although no attempt has ever yet been made, so far as I know, to bring it systematically and altogether under control. I draw my conclusions from no small amount of testimony. In ad- dition to a large quantity of oral information of which I have made notes, I have received separate letters and replies by the hundred to a long list of questions which I circulated, besides obtaining batches of replies to the same questions from various schools. The answers, on the whole, have been written in a style that testifies to much careful self-analysis, and the general accordance of those that were, derived from independent sources, together with the satisfactory way in which I have found many of the statements to bear cross-examination, has convinced me of their substantial truth. I find the distribution of the visualizing faculty, in respect to its vividness, by a simple method I have described elsewhere.* I take a haphazard bundle of returns, mark them as an examiner would mark the papers of candidates, sort them in the order of their marks, and clip them into a portfolio. If I open the book in the middle I read the medium value ; if I open it at one quarter from the beginning I read the highest quartile value ; if at one quarter from the end, the lowest quartile. If I open it at one eighth of its thickness I read an octile value ; and if at one sixteenth, a sub-octile. * See an article by myself in " Mind" (July, 1880), p. 301, on "Statistics of Mental Imagery," and the references in the foot-notes to it. TOL. XTIII. — 5 66 THE POPULAR SCIENCE MONTHLY. Between the first and last quartiles extends the broad middle class. It includes the two middle quarters, or the central half of the popula- tion, whose characteristics are pretty uniform ; it is at the beginning and end of the book that the exceptional cases lie in this, as in all other similar collections of statistics. The medium quality of mental imagery among Englishmen may be briefly described as fairly vivid, but incomplete. The part of the picture that is well defined at any one moment is more contracted than it would be in a real scene ; but, by moving the mental eye from point to point, the whole of the image, so far as it is remembered at all, may be successively brought into view. If this description be heightened a little, it will suit the high quartile ; if it be lowered a lit- tle, it will suit the low quartile, so that with small variations it will apply to the whole of the middle class. When we arrive at the high and low octiles, the tenor of the returns is considerably changed ; but we will pass by them and rest at the sub-octiles. At the highest of these the image is firm and clear, at the lowest there is scarcely any image at all. This brief statement gives a scientifically exact idea of the distri- bution of the faculty among the inner fourteen in every sixteen English- men. I do not go further here, because I wish to specify the extent to which the faculty generally admits of being educated, and not to hold out ideals which are impossible of attainment except by very few. I shall submit direct evidence of what teaching can accomplish, but it will I am sure be allowed, in the mean time, that there is a probability of being able to educate a faculty among the great majority of men to the degree in which it manifests itself, without any education at all, in at least one person out of every sixteen. When speaking, as I shall soon do, of the various qualities of the faculty, I shall keep, as now, as far as possible to the commoner cases. The power of visualizing is higher in the female sex than in the male, and is somewhat, but not much, higher in public-school boys than in men, I have, however, a few clear cases in which its power has greatly increased with advancing years. There is reason to be- lieve that it is very high in some young children, who seem to spend years of difficulty in distinguishing between the subjective and objec- tive world. Language and book-learning certainly tend to dull it. The visualizing faculty is a natural gift, and, like all natural gifts, has a tendency to be inherited. In this faculty the tendency to inher- itance is exceptionally strong, as I have abundant evidence to prove, especially in respect to certain rather rare peculiarities, of which I shall speak, and which, when they exist at all, are usually found among two, three, or more brothers and sisters, parents, children, uncles and aunts, and cousins. Since families differ so much in respect to this gift, we may sup- pose that races would also differ, and there can be no doubt that such MENTAL IMAGERY. 67 is the case. I hardly like to refer to civilized nations, because their natural faculties are too much modified by education to allow of their being appraised in an off-hand fashion. I may, however, speak of the French, who appear to possess the visualizing faculty in a high degree. The peculiar ability they show in prearranging ceremonials 2Lndi fetes of all kinds and their undoubted genius for tactics and strategy show- that they are able to foresee effects with unusual clearness. Their in- genuity in all technical contrivances is an additional testimony in the same direction, and so is their singular clearness of expression. Their phrase " figurez-vous," or " picture to yourself," seems to express their dominant mode of perception. Our equivalent of " imagine " is am- biguous. It is among uncivilized races that natural differences in the visual- izing faculty are most conspicuous. Many of them make carvings and rude illustrations, but only a few have the gift of carrying a picture in their mind's eye, judging by the completeness and firmness of their designs, which show no trace of having been elaborated in that step- by-step manner which is characteristic of draughtsmen who are not natural artists. Among the races who are thus gifted are the despised, and, as I confidently maintain from personal knowledge of them, the much- underrated Bushmen of South Africa. They are no doubt deficient in the natiiral instincts necessary to civilization, for they detest a reg- ular life, they are inveterate thieves, and are incapable of withstanding the temptation of strong drink. On the other hand, they have few superiors among barbarians in the ingenious methods by which they supply the wants of a difiicult existence, and in the effectiveness and nattiness of their accoutreijaents. One of their habits is to draw pic- tures on the walls of caves, of men and animals, and to color them with ochre. These drawings were once numerous, but they have been sadly destroyed by advancing colonization, and few of them, and, in- deed, few wild Bushmen, now exist. Fortunately, a large and valuable collection of f ac-similes of Bushman art was made before it became too late, by Mr. Stow, of the Cape Colony, who has very lately sent some specimens of them to this country, in the hope that means might be found for the publication of the entire series. Among the many pic- tures of animals in each of the large sheets full of them, I was particu- larly struck with one of an eland, as giving a just idea of the precision and purity of their best work. A small but interesting sheet of copies of Bushman drawings was presented by Colonel Moncrieff, C. B., of gun-carriage celebrity, to the Christie Collection, which is now incorpoi'ated with the British Mu- seum. Many notices of them are to be found in Barrow's travels in South Africa, and elsewhere. The method by which the Bushmen draw is described in the fol- lowing extract from a letter written to me by Dr. Mann, the well- 68 THE POPULAR SCIENCE MONTHLY. known authority on South African matters of science. The boy to whom he refers belonged to a wild tribe living in caves in the Drakenberg, who plundered outlying farms, and were pursued by the neighboring colonists. He was wounded and captured, then sent to hospital, and subsequently taken into service. He was under Dr. Mann's observation in the year 1860, and has recently died, to the great regret of his employer, Mr, Proudfoot, to whom he became a valuable servant. Dr. Mann writes as follows : " This lad was very skillful in the proverbial Bushman art of drawing animal figures, and upon several occasions I induced him to show me how this was managed among his people. He invariably began by jotting down, upon paper or on a slate, a number of isolated dots which presented no connection or trace of outline of any kind to the uninitiated eye, but looked like the stars scattered promiscuously in the sky. Having with much deliberation satisfied himself of the sufficiency of these dots, he forthwith began to run a free bold line from one to the other, and as he did so the form of an animal — horse, buffalo, elephant, or some kind of antelope — gradually developed itself. This was invariably done with a free hand, and with such unerring accuracy of touch that no correction of a line was at any time attempted. I understood from this lad that this was the plan which was invariably pursued by his kindred in making their clever pictures." It is impossible, I think, for a drawing to be made on this method unless the artist had a clear image in his mind's eye of what he was about to draw. Other living races have the gift of drawing, but none more so than the Esquimau. I will therefore speak of these, and not of the Australian and Tasmanian pictures, nor of the still ru^er performances of the old inhabitants of Guiana, nor of those of some North American tribes, as the Iroquois. The Esquimaux are geographers by instinct, and appear to see vast tracts of country mapped out in their heads. From the multitude of illustrations of their map-drawing powers, I will select ' one from those included in the journals of Captain Hall, at p, 224, which were published last year by the United States Government under the editorship of Professor J. E. Nourse. It is the f ac-simile of a chart drawn by an Esquimau who was a thorough barbarian in the accepted sense of the word. That is to say, he spoke no language besides his own uncouth tongue, he was wholly uneducated according to our mod- ern ideas, and he lived in what we should call a savage fashion. This man drew from memory a chart of the region over which he had at one time or another gone in his canoe. It extended from Pond's Bay, in lat. 73°, to Fort Churchill, in lat. 58° 44', over a distance in a straight line of more than 960 nautical, or 1,100 English, miles, the coast being so indented by arms of the sea that its length is six times as great. On comparing this rough Esquimau outline with the Admiralty chart of 1870, their accordance is remarkable. I have seen many route maps MENTAL IMAGERY. 69 made by travelers in past years, when tlie scientific exploration of the world was much less advanced than it is now, and I can confidently say that I have never known of any traveler, white, brown, or black, civilized or uncivilized, in Africa, Asia, or Australia, who, being un- provided with surveying instruments, and trusting to his memory alone, has pi-oduced a chart comparable in extent and accuracy to that of this barbarous Esquimau. Their powers of accurate drawing are abun- dantly testified by the numerous illustrations in Rink's work, all of which were made by self-taught men, and are thoroughly realistic. So much for the wild races of the present day ; but even the Esqui- maux are equaled in their power of drawing by the men of old times. In ages so far gone by that the interval that separates them from our own may be measured in perhaps hundreds of thousands of years, when Europe was mostly ice-bound, a race, which in the opinion of all anthropologists was closely allied to the modern Esquimaux lived in caves in the more habitable places. Many broken relics of that race have been found ; some few of these are of bone, engraved with flints or carved into figures, and among these are representations of the mam- moth, elk, and reindeer, which, if made by an English laborer with the much better implements at his command, would certainly attract local attention and lead to his being properly educated, and in much likeli- hood to his becoming a considerable artist. It is not at all improbable that these prehistoric men had the same geographical instincts as the modern Esquimaux, whom they closely resemble in every known respect. If so, it is perfectly possible that scraps of charts scratched on bone or stone, of prehistoric Europe, when the distribution of land, sea, and ice was very different from what it is now, may still exist, buried underground, and may reward the zeal of some future cave explorer. I now return to m j principal topic, the mental imagery of the Eng- lish race, and I will mention some of the chief peculiarities I have noted in it. When the faculty is strong it is apt to run riot. There are a few pei'sons, including men and women of no mean capacity, who can not disentangle even the letters of the alphabet from the oddest associations with colors, formed in some half -forgotten period of child- hood/ To some of these persons it may be that an a will always con- vey the sense of blackness, an e that of greenness, an i will be blue, an o white, and a u red. The consonants will also for the most part have their separate tints, so that every word seems parti-colored to their fancy ; and a description of scenery in a book produces an effect upon their imagination very different from what the author could have fore- seen. The same is true in respect to numerals, days of the week, and months of the year. I have collected perhaps twenty good accounts of these bizan-e tendencies from independent sources, and find them to run strongly in families. They are not communicated by teaching or imitation, because those who have these peculiarities are usually 70 THE POPULAR SCIENCE MONTHLY. disinclined to talk about them, recollecting how they were laughed at on the few occasions when they did so. The fact of their being com- mon to scattered members of the same family has often been dis- covered for the first time through my inquiries. I should say that I have found no general accordance between particular letters and colors. The relationship between them appears to be in each case a haphazard one ; but having been once formed it is durable. Another and much more common oddity is the tendency to visualize numerals in a peculiar manner, which characterizes, as I have roughly reckoned, about one woman in every fifteen, and one man in every thirty. Those who do so are never able to dissociate any single num- ber from its own particular place in the field of their mental view, so that when they think of a series of numbers they always visualize them in a certain form. Either the numbers are all visible at once, as if they were printed on cards and hung in space, according to some grotesque pattern, or the mind travels along a blank but familiar path to the place where the number that is thought of is known to reside, and then it starts into view. There are many weird varieties of this singu- lar tendency to visualize numbers in forms, which I have lately de- scribed,* and will not here repeat. Suffice it to say, that they date from an earlier period than that to which recollection extends. They manifest themselves quite independently of the will ; they are inva- riably the same in the same person, but are never the same in two different persons, and the tendency to see them is strongly hereditary. I have now a collection of hundreds of them, not only from English men and women, boys and girls, but from American, French, German, Italian, Austrian, and Russian correspondents. They are found useful in the simpler kinds of mental arithmetic. Those who see number-forms have usually some equally persistent scheme for dates, based more or less upon the diagrams of the school- room. I am well acquainted with an accomplished student of history whose mnemonic form for all historical events is a simple nursery dia- gram, which has blossomed, as it were, into large excrescences whereon the subsequently acquired facts are able to find standing-room. These diagrams are really helpful, because their shape is correlated with the subject they portray. They are not like the jingling nonsense verses and bad puns upon which many persons base their memory of facts. The persistency of the forms under which numerals and dates are visualized testifies to a want of flexibility in mental imagery which is characteristic of many persons. They find that the first image they have acquired of any scene is apt to hold its place tenaciously in spite of subsequent need of correction. They find a difficulty in shifting their mental view of an object, and examining it at pleasure in differ- * "Visualized Numerals," a Memoir read before the Anthropological Institute, March 9, 1880, about to be published in the forthcoming part of their journal of this year. See also a previous Memoir in "Nature," February 15, 1880. MENTAL IMAGERY. 71 ent positions. If they see an object equally often in many positions, the memories confuse one another. They are less able to visualize the features of intimate friends than those of persons of whom they have caught only a single glance. Many such persons have expressed to me their grief at finding themselves powerless to recall the looks of dear relations whom they had lost, while they had no difficulty in recollect- ing faces that were uninteresting to them. Others have a complete mastery over their mental images. They can call up the figure of a friend, and make it sit on a chair or stand up at will ; they can make it turn round and attitudinize in any way, as by mounting it on a bicycle or compelling it to perform gymnastic feats on a trapeze. They are able to build up elaborate geometric structures bit by bit in their mind's eye, and add, subtract, or alter at will and at leisure. This free action of a vivid visualizing faculty is of much importance in connection with the higher processes of thought, though it is commonly abused, as may be easily explained by an exam- ple. Suppose a person suddenly to accost another with the following words : " I want to tell you about a boat." What is the idea that the word " boat " would be likely to call up ? I tried the experiment with this result. One person, a young lady, said that she immediately saw the image of a rather large boat pushing off from the shore, and that it was full of ladies and gentlemen, the ladies being dressed in white and blue. It is obvious that a tendency to give so specific an inter- pretation to a general word is absolutely opposed to philosophic thought. Another person, who was accustomed to philosophize, said that the word " boat " had aroused no definite image, because he had purposely held his mind in suspense. He had exerted himself not to lapse into any one of the special ideas that he felt the word boat was ready to call up, such as a skiff, Avherry, barge, launch, punt, or dingy. Much more did he refuse to think of any one of these with any par- ticular freight or from any particular point of view. A habit of sup- pressing mental imagery must, therefore, characterize men who deal much with abstract ideas ; and, as the power of dealing easily and firmly with these ideas is the surest criterion of a high order of intel- lect, we should expect that the visualizing faculty would be starved by disuse among philosophers, and this is precisely what I have found on inquiry to be the case. Here, however, a fresh consideration comes in, which shows that the tendency to visualize is liable to be over-corrected, especially by those who are accustomed but not obliged to visualize in hard and per- sistent forms, and that they lose thereby the only means of obtaining a correct mental picture of a species or race. I proved two years ago* that a generalized picture did as a matter of fact admit of being pro- duced. I threw magic-lantern portraits of different persons on the top * "Journal Anthropological Institute," "Composite Portraits," vol. viii, ISVS, p. 132. "Journal Royal Institution," "Generic Images," ix, 1879, p. 161. 72 TEE POPULAR SCIENCE MONTHLY. of one another, on the same screen, and elicited a resultant face which resembled no one of the components in particular, but included all. Whatever was common to all the portraits became intensified by com- bination ; whatever was peculiar to each portrait was relatively too faint to atti'act attention, and virtually disappeared. I made a great variety of experiments ; in some I optically superimposed images by arrangements of lenses, mirrors, stereoscopes, or doubly refracting crystals ; in others I combined separate photographic impressions upon a single sensitized plate. The result was that I invariably found it possible to make a generalized picture, having a remarkable appearance of individuality, out of a collection of separate portraits, so long as the latter bore a moderate resemblance to one another, and were taken from the same point of view, and were of the same size. I argue that the mind of a man whose visualizing faculty is free in its action forms these generalized images of its own accord out of its past experiences. It readily reduces images to the same scale, through its constant practice in watching objects as they approach or recede, and consequently grow or diminish in size. It readily shifts images to any desired point of the field of view, through its habit of follow- ing bodies in motion to the right or left, upward or downward. It selects images that present the same aspect, either by a simple act of memory or by a feat of imagination that forces them into the desired position, and it has little or no difficulty in reversing them from right to left, as if seen in a looking-glass. In illustration of these general- ized mental images let us recur to the boat, and suppose the speaker to continue as follows : " The boat was a four-oared racing boat ; it was passing quickly just in front of me, and the men were bending for- ward to take a fresh stroke." Now, at this point of the story the lis- tener ought to have a picture Avell before his eye. It ought to have the distinctness of a real four-oar going either to the right or the left, at the moment when many of its details still remained unheeded, such as the dresses of the men and their individual features. It would be the generic image of a four-oar formed by the combination into a single picture of a great many sight-memories of those boats. In the highest minds a descriptive word is sufficient to evoke crowds of shadowy associations, each striving to manifest itself. When they differ so much from one another as to be unfit to combine into a single idea, there will be a conflict between them, each being prevented by the rest from obtaining sole possession of the field of consciousness. There would, therefore, be no definite imagery so long as the aggregate of all the pictures that the word could reasonably suggest, of objects presenting similar aspects, reduced to the same size, and accurately superposed, resulted in a mere blur ; but a picture would gradually evolve as qualifications were added to the word, and it would attain to the distinctness and vividness of a generic image long before the word had been so restricted as to be individualized. If the intellect be slow, MENTAL IMAGERY. 73 tliough correct in its operations, the associations will be few, and the generalized image based on insufficient data. If the visualizing power be faint, the generalized image will be indistinct.* Some persons have the power of combining in a single perception more than can be seen at any one moment by the two eyes. It is needless to insist on the fact that all who have two eyes see stereo- scopically, and therefore somewhat round a corner. Children, who can focus their eyes on very near objects, must be able to comprise in a single mental image much more than a half of any small thing they are examining. Animals such as hares, whose eyes are set more on the side of the head than ours, must be able to perceive at one and the same instant more of a panorama than we can. I find that a few per- sons can, by what they often describe as a kind of touch-sight, visual- ize at the same moment all round the image of a solid body. Many can do so nearly, but not altogether, round that of a terrestrial globe. An eminent mineralogist assures me that he is able to imagine simul- taneously all the sides of a crystal with which he is familiar. I may be allowed to quote my own faculty in this respect. It is exercised only occasionally and in dreams, but under those circumstances I am perfectly conscious of embracing an entire sphere in a single per- ception. This power of comprehension is practically attained in many cases by indirect methods. It is a common feat to take in the whole sur- roundings of an imagined room with such a rapid mental sweep as to leave some doubt whether it has not been viewed simultaneously. Some persons have the habit of viewing objects as though they were partly transparent ; thus they can see the north and south poles of a globe, but not the equatorial parts, at the same time. They can also see into all the rooms of an imaginary house by a single mental glance. A fourth class of persons have the habit of recalling scenes, not from the point of view whence they were observed, but from a distance, and they visualize their own selves as actors on the mental stage. By one or other of these ways, the power of seeing the whole of an object, and not merely one aspect of it, is attained by many persons, and might probably be attained by all. A useful faculty, easily developed by practice, is that of retaining a mere retinal picture. A scene is flashed upon the eye ; the memory of it persists, and details which escaped observation during the brief time when it was actually seen may be analyzed and studied at leisure in the subsequent vision. The place where the image appears to lie differs much in different persons. Most see it in an indefinable sort of way, others see it in front of the eye, others at a distance corresponding to reality. There exists a power which is rare naturally, but can, I believe, be easily * It may possibly interest some persons, in connection with this topic, to refer to my " Psychometric Facts," in the " Topular Science Monthly" for April, 1879. 74 THE POPULAR SCIENCE MONTHLY. tauglit, of projecting a mental picture upon a piece of paper, and of holding it fast there, so that it can be outlined with a pencil. The Bush-boy of whom I spoke must have had something of this faculty. We may now foresee that education is likely to accomplish much, for most of the more important peculiarities of which I have sjioken are naturally present in a high degree in at least one person out of six- teen. It can hardly be doubted that any of these might be developed by education to a useful amount in, say, twelve out of the remaining fifteen (thus raising all who ranked above the lowest quartile to at least the level of the highest sub-octile). The forms of the visualizing faculty which we ought to aim at pro- ducing appear to me to be as follows : The capacity of calling up at will a clear, steady, and complete mental image of any object that we have recently examined and studied. We should be able to visualize that object freely from any aspect ; we should be able to project any of its images on paper and draw its out- line there ; we should further be able to embrace all sides of the object simultaneously in a single percej^tion, or at least to sweep all sides of it successively with so rapid a mental glance as to arrive at practically the same result. We ought to be able to construct images from de- scription or otherwise, and to alter them in whatever way we please. We ought to acquire the power of combining separate, but more or less similar, images into a single generic one. Lastly, M^e should learn to carry away pictures at a glance of a more comj)licated scene than we can succeed at the moment in analyzing. There is abundant evidence that the visualizing faculty admits of being largely developed by education. The testimony on which I would lay especial stress is derived from the published experiences of M. Lecoq de Boisbaudran, late Director of the Ecole Nationale de Dessin, in Paris, which are related in his "Education de la Memoii'e Pittoresque." * He trained his pupils with extraordinary success, begin- ning with the simplest figures. They were made to study the models thoroughly before they tried to draw them from memory. One favor- ite expedient was to associate the sight-memory with the muscular memory, by making his pupils follow at a distance the outlines of the figures with a pencil held in their hands. After three or four months' practice, their visual memory became greatly strengthened. They had no difficulty in summoning images at will, in holding them steady, and in drawing them. Their copies were executed with marvelous fidelity, as attested by a commission of the Institut, appointed in 1852 to in- quire into the matter, of which the eminent painter, Horace Vernet, was a member. The present Slade Professor of Fine Arts at Uni- versity College, M. Legros, was a pupil of M. de Boisbaudran. He has expressed to me his indebtedness to the system, and he has assured me of his own success in teaching others in a similar way. * Republished in an 8vo, entitled " Enseignement Artistique." Morel et Cie. Paris, IS'ZO. MENTAL IMAGERY. 75 I could mention instances within my own experience in which the visualizing faculty has become strengthened by practice ; notably one of an eminent engineer, who had the power of recalling form with un- usual precision, but not color. A few weeks after he had replied to my questions, he told me that my inquiries had induced him to practice his color memory, and that he had done so with such success that he had become quite an adept at it, and that the newly acquired power was a source of much pleasure to him. The memories we should aim at acquiring are chiefly such as are based on a thorough understanding of the objects observed. In no case is this more surely effected than in the processes of mechanical drawing, where the intended structure has to be portrayed so exactly in plan, elevation, side view, and sections, that the workman has simjjly to copy the drawing in metal, wood, or stone, as the case may be. It is undoubtedly the fact that mechanicians, engineers, and architects possess the faculty of seeing mental images with remarkable clearness and precision. A few dots like those of the Bushmen give great assistance in cre- ating an imaginary picture, as proved by our general habit of working out new ideas by the help of marks and rude lines. The use of dolls by children also testifies to the value of an objective support in the construction of mental images. The doll serves as a kind of skeleton for the child to clothe with fantastic attributes, and the less individu- ality the doll has, the more it is appreciated by the child, who can the better utilize it as a lay figure in many different characters. The art of strengthening visual as well as every other form of memory lies in multiplying associations ; the healthiest memory being that in which all the associations are logical, and toward which all the senses concur in their due proportions. It is wonderful how much the vividness of a recollection is increased when two or more lines of association are simultaneously excited. It is a mistake to suppose that a powerful exercise of the will can vivify a faint image. The action of the will is negative, being limited to the suppression of what is not wanted and would be in the way. It can not create thought, but it can prevent thoughts from establish- ing themselves which lead in a false direction ; so it keeps the course clear for a logical sequence of them. But, if appropriate ideas do not come of their own accord, the will is powerless to evoke them. Thus, when we forget a familiar name, it is impossible to recall it by force of will. The only plan in such cases is to think of other things, till some chance association suggests the name. The mind may be seriously dulled by over-concentration, and will only recover its freshness by such change of scene and occupation as will encourage freedom and discursiveness in the flow of the ideas. All that remains to be said refers to the utility of the visualizing faculty, and may be compressed into a few words. A visual image is 76 THE POPULAR SCIENCE MONTHLY. the most perfect form of mental representation wherever the shape, position, and relations of object in space are concerned. It is of im- portance in every handicraft and profession where design is required, because workmen ought to visualize the whole of what they propose to do before they take a tool in their hands. Thus, the village smith and the carpenter, Avho are employed on odd jobs, require it no less for their wojk than the mechanician, the engineer, and the architect. The lady's-maid who arranges a new dress requires it for the same reason as the decorator employed on a palace, or the agent who lays out great estates. Strategists, artists of all denominations, physicists who con- trive new experiments, and, in short, all who do not follow routine, have need of it. The pleasure its use can afford is immense. I have many correspondents who say that the delight of recalling beautiful scenery and great works of art is the highest that they know. Our bookish education tends unduly to repress this valuable gift of nature. A faculty that is of importance in all technical and artistic occu- pations, that gives accuracy to our perceptions, and justness to our generalizations, is starved by disuse, instead of being cultivated in the way that will bring most return. I believe that a serious study of the best method of developing the faculty of visualizing is one of the many pressing desideratam the new science of education. — Fortnightly Meview. ♦♦» HENRY AND FARADAY.* Bt Professor ALFRED M. MAYEK. MOST reluctantly do I here desist from citing further the works of Henry. It is impossible to crowd into one brief hour the thoughts which were his occupation during more than half a century. I have at least endeavored to exhibit before you the more important of the labors of his life. What shall we think of them ? Surely they are on as high a plane as those of any of his contemporaries, and show as much originality as theirs in their conception — as much skill in their execution. Yet it has been said that Henry was not a man of genius. As I have not been able to find that the philosophers, who have the special charge of giving from time to time definitions of genius, have been able to come to any satisfactory conclusion among themselves, I will leave their company, and, with your liberty, take my definition from a book which, if Ave accredit Thackeray, is one of the very best, if not the best, novel ever writ in English. After listening to this I will allow you to form your own opinions as to whether Henry did or did not possess genius : " By genius I would understand that power, * Extract from " Henry as a Discoverer," a paper read by Professor Mayer at the recent Boston mectlns; of the American Scientific Association. HENRY AND FARADAY. -j-j or rather those powers of the mind which are capable of penetrating into all things within our reach and knowledge, and of distinguishing their essential differences. These are no other than invention and judgment ; and they are both called by the collective name of genius, as they are of those gifts of nature which we bring with us into the world. Concerning each of which, many seem to have fallen into very great errors ; for by invention, I believe, is generally understood a creative faculty, which would indeed prove most romance writers to have the highest pretensions to it ; whereas by invention is meant no more (and so the word signifies) than discovery or finding out ; or, to explain it at large, a quick and sagacious penetration into the true essence of all the objects of our contemplation. This, I think, can rarely exist without the concomitancy of judgment, for how we can " be said to have discovered the true essence of two things, without dis- cerning their difference, seems to me hard to conceive. Now, this last is the undisputed province of judgment ; and yet some few men of wit have agreed with all the dull fellows in the world in representing these two to have been seldom or never the property of one and the same person." My own judgment, if of any value, would rank the ability of Henry — I do not say his achievements — a little below that of Faraday. Indeed, their lives and their manners of working were strangely alike. Each started in life with moral and benevolent habits, well developed and healthy bodies, quick and accurate perceptions, calm judgment and self-reliance, tempered with modesty and good manners — a good ground, surely, in which to plant the germs of the scientific life. Far- aday was an apprentice to a bookbinder. Henry served in the same capacity under a silversmith. Each, endowed with a lively imagina- tion, was in his younger days fond of romance and the drama ; and, by a singular similarity of accidents, each had had his attention turned to science by a book which chance threw in his way. This work, in the case of Faraday, was Mrs. Marcet's " Conversations on Chemis- try," and the book which influenced Henry's career was Gregory's " Lectures on Experimental Philosophy, Astronomy, and Chemistry.'* Of Mrs. Marcet's book Faraday thus writes : My DEAR Friend : Tour subject interested me deeply every way^ for Mrs. Marcet was a good friend to me, as she must have been to many of the human race. I entered the shop of a bookseller and bookbinder at the age of thirteen, in the year 1804, remaining there eight years, and during the chief part of the time bound books. Now, it was in those books, in the hours after work, that I found the beginning of my philosophy. There were two that especially helped me, the "Encyclopajdia Britannica," from which I gained my first notions of electricity, and Mrs. Marcet's " Conversations on Chemistry," which gave me my foundation in that science. Do not suppose that I was a very deep thinker, or was marked as a preco- cious person. I was a lively, imaginative person, and could believe in the " Ara- bian Nights "as easily as in the "Encyclopaedia." But facts were important 78 THE POPULAR SCIENCE MONTHLY. to me and saved me. I could trust a fact, and always cross-examined an asser- tion. So, when I questioned Mrs. Marcet's book, by such little experiments as I could find means to perform, and found it true to the facts as I could understand them, I felt that I had got hold of an anchor in chemical knowledge, and clung fast to it. Thence my deep veneration for Mrs. Marcet — first as one who had conferred great personal good and pleasure on me ; and then as one able to con- vey the truth and principle of those boundless fields of knowledge which con- cern natural things to the young, untaught, and inquiring mind. You may imagine my delight when I came to know Mrs. Marcet personally; how often I cast my thoughts backward, delighting to connect the past and present; how often, when sending a paper to her as a thank-olfering, I thought of my first instructress, and such thoughts will remain with me. Henry wrote on the inside of tlie cover of Gregory's work the fol- lowing words : TIjIs book, although by no means a profound work, has, under Providence, exerted a remarkable influence on my life. It accidentally fell into my hands when I was about sixteen years old, and was the first book I ever read with at- tention. It opened to me a new world of thought and enjoyment ; invested things before almost unnoticed with the highest interest ; fixed my mind on the study of nature, and caused me to resolve at the time of reading it that I would immediately commence to devote my life to the acquisition of knowledge. J. H, Each of these philosophers worked with simple instruments mostly constructed by his own hands, and by methods so direct that he ap- peared to have an almost intuitive perception into the workings of nature ; and each gave great care to the composition of his writings, sending his discoveries into the world clothed in simple and elegant English. Finally, each loved science more than money, and his Creator more than either. There was sympathy between these men, and Henry loved to dwell on the hours that he and Bache had spent in Faraday's society. I shall never forget Henry's account of his visit to King's College, Lon- don, where Faraday, Wheatstone, Daniell and he had met to try and evolve the electric spark from the thermopile. Each in turn at- tempted it and failed. Then came Henry's turn. He succeeded ; calling in the aid of his discovery of the effect of a long inter-polar wire wrapped around a piece of soft iron. Faraday became as wild as a boy, and, jumping up, shouted, "Hurrah for the Yankee experi- ment ! " And Faraday and "Wheatstone reciprocated the high estimation in which Henry held them. During a visit to England, not long before AVheatstorie's death, he told me that Faraday an4 he had, after Hen- ry's classical investigation of the induced currents of different orders, written a joint letter to the council of the Royal Society, urging that the Copley medal, " that laurel-wreath of science," should be bestowed on Henry: On further consultation with members of the council, it HENRY AND FARADAY. 79 was decided to defer the honor till it would come with greater eclat^ when Henry had continued further his researches in electricity. Hen- ry's removal to Washington interrupted these investigations. Wheat- stone promised to give me this letter, to convey to Henry as an evi- dence of the high appreciation which Faraday and he had for his genius ; but Wheatstone's untimely death prevented this. Both Far- aday and Henry gave much thought to the philosophy of education, and in the main their ideas agreed. I may, in this connection, be ex- cused for reading abstracts from a letter from Henry soon after he had received the news that I had given my son his name. In this let- ter he gives this information, which may be news to the most of you : I did not object to Henry as a first name ; although I have been sorry that my grandfather, in coming from Scotland to this country, substituted it for Hen- drie, a much less common, and, therefore, distinctive name. He then proceeds : I hope that both his body and his mind will be so developed by proper train- ing and instruction that he may become an efficient, wise, and good man. I say efficient and wise, because these two characteristics are not always united in the same person. Indeed, most of the inefficiency of the world is due to their sepa- ration : wisdom may know what ought to be done, but it requires tlie aid of efficiency to accomplish the desired object. I hope that in the education of your son due attention may not only be given to the proper development of both these faculties, but also that they will be cultivated in the order of nature : that is, doing before thinking ; art before science. By inverting this order much in- jury is frequently done to a child, especially in the case of the only son of a wid- owed mother, in which a precocious boy becomes an insignificant man. On examination in such a case, it will be generally found that the boy has never been drilled into expertness in the art of language, of arithmetic, or of spelling, of attention, perseverance, and order, or, in other words, of the habits of an ac- tive and efficient life. Henry was a man of extensive reading, and often surprised his friends by the extent and accuracy of his information, and by the original manner in which he brought his knowledge before them. Not only was he well versed in those subjects in which one might naturally suppose him proficient, but in departments of knowledge entirely dis- tinct from that in which he gained his reputation as an original thinker. Although without a musical ear, he had a nice feeling for the move- ment of a poem, and was fond of drawing from his retentive memory poetic quotations apt to the occasion. He was a diligent student of mental philosophy, and also took a lively interest in the progress of biological science, especially in following the recent generalizations of Darwin, while the astonishing development of modern research in tracking the history of prehistoric man had for him a peculiar fascina- tion. Yet, w^ith all his learning, reputation, and influence, Henry was as modest as he was pure. One day, on opening Henry's copy of Young's " Lectures on Natu- 8o THE POPULAR SCIENCE MONTHLY. ral Philosophy " — a book which he had studied more than any other work of science — I read on the fly-leaf, written by his own hand, these words : "In Nature's infinite book of secrecy A little I can read." — ShaJcesjjeare. And clid he not read a little " in Nature's infinite book of secrecy " ? and did he not read that little carefully and well ? May we all read our little in that book as modestly and as reverently as did Joseph Henry I ^«» THE EYOLUTION OF ORGANIC FORM. By CHAELES MOREIS. WHAT does the story of life upon the earth teach us concerning the unfoldment of organic form? Is the human figure a chance result of an evolutionaiy force which might have pursued some quite diiferent direction ; or are the laws of development such as to lead inevitably toward the form of man as their highest organic product? This is a question admitting of a more definite answer than may at first thought appear, as we hope to show by a rapid sur- vey of the various stejss of the process. And, first, it must be borne in mind that Nature's efforts at animal and plant formation have been on no contracted scale. The varying forms produced have been almost multitudinous. They exist at pres- ent in the greatest variety. But the present is only the apex of a long succession of life-epochs, each with its special organic group. We must multiply the existing forms by thousands of such epochs to obtain any adequate idea of the whole broad field of life. Plainly, then. Nature has not dealt sparsely with the subject, but has produced a most generous profusion of differing forms. Hence, narrow as is the field of the earth, there is reason to believe that the form-evolving principle has had full opportunity here to act. and that it has selected out the most favorable line of development from the many directions attempted. Life is an incessant battle — a battle for food, and a battle for safety. The total quantity of food is limited. The powers of or- ganic increase are unlimited. Thus a fight for food becomes neces- sary ; a conflict in which no quarter is asked and none given. Victory inclines to the strongest and best armed. The successful combatant must have powers of defense against all Nature's attacks, and of as- sault against all Nature's defenses. In other words, the organism best adapted to its environment will win. And this incessant weeding-out process is not confined to mature THE EVOLUTION OF ORGANIC FORM. 81 forms. It is constantly in action, from the germ up to maturity. There is as fierce a battle between germs as between grown animals as to which shall survive. The ill-adapted embryo perishes ; the well- adapted lives. Of the multitudes of young, only those survive which are best fitted to obtain food and escape peril. There is thus a suc- cession of conditions to which the growing form must be successively adapted, and each mature form is the sole survivor of a myriad of germs which started together in the race of life. It has been sharply selected out as the best adapted. The law of adaptation thus works vigorously throughout all em- bryonic development. It woi'ks as decisively on matui-e forms. They must be closely adapted to certain conditions of nature ; but the pos- sible vai'iation in conditions is almost boundless. Not only in time have there been constant changes in natural conditions, and not only do they now widely vary in different localities, but even in the same locality a great variety of differing conditions simultaneously exist. As the simple atoms of the chemical elements unite to form com- plex compounds, so do simple conditions unite into complex. Numer- ous sets of minor conditions exist together, from whose combination are formed less numerous major conditions, and from these again a single highest condition which includes all below its level. Thus each locality may possess its many sets of simpler forms, and sets of superior forms narrowing in number as they become adapted to a wider environment, until a highest or most complex form is reached, which is in physical harmony with the totality of existing conditions. And the question of superiority and inferiority between animals is simply a question of the greater or lesser complexity of the conditions to which they are fitted, the broader or narrower field of adaptation which they occupy. But, in this quick pressing of new forms into every nook and cranny of nature, there are certain general principles which have a controlling influence over the resulting changes in form. One con- sideration must always be taken into account, that of the character of organic material — of protoplasm — and the forms it naturally tends to assume. And a second consideration is that of the main end of animal life — the absorption of aliment. From this latter it follows that the basic type of animal form is the stomach ; and in viewing the field of animal development we behold only a series of stomachs, provided with various food-taking and danger-escaping appendages. Evolution, then, means the gaining of superior powers of provid- ing for the needs of this voracious core of all animals, the stomach ; and of superior powers of escaping the voraciousness of other armed and perambulatory stomachs. The aliment on which organisms subsist is of three kinds — mineral, vegetable, and animal. The pursuit of these yields two distinct classes of organisms. Mineral food needs to undergo a high degree of chemi- TOL. XVIII. — 6 82 THE POPULAR SCIENCE MONTHLY. cal integration. The organisms which subsist upon it are functionally- low, the forces which might have been otherwise employed being used up in the formation of protoplasm and other high organic compounds. The conditions of alimentation limit the vegetable world to one general form. Plants do not need to seek food ; food seeks them. Thus no motive powers are requisite, and they remain fixed in one position. But food seeks them in two different localities, the earth and the air. The earth constituent comes to them dissolved in water, the atmospheric constituent dissolved in air. They must, therefore, have powers of extension sufficient to occujDy both these fields. This power is obtained by growth, root-extension seeking the liquid food, leaf-extension the gaseous food. These general conditions confine plants to one generic form, a connecting link of stem between earth and air, and an extension of root-mouths into the soil and of leaf -mouths into the atmosphere. A tree is a society, or family ; the main stem being the patriarch of the flock, the earth and air branches its descendants, and the leaves and rootlets its latest unisexual offspring. As the type of animal form is the stomach, so the type of plant form is the mouth. It has not yet developed into the formation of a central stomach, nor has it attained powers of digestion. It builds up protoplasm by successive steps of chemical integration. It is a laboratory for the production of chemical synthesis — not of chemical analysis, as in animals. Thus the food-taking requisite is provided for in the production of numerous leaf and root mouths, extending themselves into the two great reservoirs of food. But defense must be provided for as well. Plants are attacked by various foes. Fierce storms assail them. These can only be resisted by an inmate strength or elasticity. Wintry cold congeals their food-supply. They must therefore be capable of hiber- nating. Animals seek to devour them. They can only escape by inclosing themselves in a rigid armor, or by becoming unfitted for animal food. This leads us to the most significant adaptation in plants. Their life duration is limited, and they must have powers of reproduction, the best adapted in this respect crowding out the less adapted. Obvi- ously the seed-bearers are best fitted for survival ; and of these, those bearing the most seeds, and having the best facilities for dispersing them. But the fixed plant can not, of itself, spread its seeds beyond its own locality. It must be aided by other agencies. Many plants avail themselves of air-currents for this purpose, the seeds being pro- vided with curious appendages to aid them in flying or rolling before the winds. In other cases the seed is surrounded by a store of pala- table food, offering an inducement to the higher animals to devour it, and thus to disseminate the seeds. THE EVOLUTION OF ORGANIC FORM. 83 Fertilization of the flowers is provided for in a similar manner. The flowers can not reach each other, and therefore enlist insects in their aid, preparing a store of food highly palatable to these air rovers, and thus having their fertilizing germs carried from flower to flower. Such are the general agencies at work in plant-life, and producing its typical form. And thus, while protecting their vital organs by a rigid armor, plants provide for reproduction by adapting a portion of their bodies for animal food ; gaining in this manner for their offspring the powers of motion which they lack themselves. Yet all plants are not confined to this typical form, as all plants are not confined to purely inorganic aliment. Some subsist on partly or fully elaborated organic food, and these deviate from the plant and approach some of the animal types of form, which we have next to consider. In animal life very different requirements from those presented by plants are exhibited, and the forms are essentially different. Yet their main functions are the same. All organisms are adapted to the two general purposes of food-getting and defense, to which all their other powers are subordinate. As vegetables subsist on mineral, so animals subsist on organic food, either vegetable or animal. And this food presents another es- sential difference from that of plants. It exists only in the solid state, while that of plants is wholly fluid. It can not be taken by direct imbibition, like that of vegetables, but must be first rendered liquid through some digestive process, and afterward imbibed. Thus an internal stomach is necessary to all but the very lowest animals, and even these improvise temporary stomachs, which foreshadow the per- manent stomach. The animal — not being bathed in an ocean of food, which it has but to drink in at a multitude of mouths covering its whole periphery, as in the plant — must have means of drawing food to it, or organs ena- bling it to go in search of food. In short, it must have motive powers. And for those creatures which are obliged to go in search of their food, it is equally requisite that they should be able to discover its locality. Sensory organs, therefore, become necessary. Consequently, the animal is superior to the plant through this possession of muscular and sense organs. It is also superior in being able to employ the energy derived from its food, not in the building up of chemical com- pounds, but in the force of motion and sensation. Nor can the animal be wholly protected by armor. Some portion of it must be exposed to danger. At least those flexible limbs which aid it in food-getting are in frequent peril, and need some form of pro- tection. The loss of them can not well be made useful to the animal, as the loss of its exposed portions is to the plants. Evidently the animal is capable of a much wider range of form- evolution than the plant. In its mobility of variation it has branched 84 THE POPULAR SCIENCE MONTHLY. out in many directions, but the possible height attainable by each gen- eral direction of growth is limited by certain principles, which we may be able to discover. Both herbivorous and carnivorous animals may exist in fixed and in motile forms — food-attracting and food-seeking adaptations. The fixed forms are principally or entirely water-animals, comprising the Sponges, a large section of the Polyps, the lower forms of the Echino- derms, with some divergent forms, such as the Bryozoa, the Tunicata, and the Barnacles. These are saved the necessity of moving, by the fact of their being tenants of a liquid whose moving currents bring them food, and by being capable of themselves producing water-currents, on which food is borne to them. Their necessary movements are reduced to the mo- tion of tentacles — current-making or food-seizing organs. No sense is requisite except touch, and therefore no higher degree of sensibility is developed. These fixed forms thus necessarily remain at the foot of the ladder of progress, being but a step above the Protozoa, or single- celled animals. They may be classed, however, as superior to the in- ternal parasites of animals, which live by imbibing elaborated animal juices, and need no motile nor sense organs. But, as soon as an animal obtains powers of free motion, it comes at once into contact with a much wider range of conditions and needs to gain extended powers. It is, moreover, placed under seeming dis- advantages, which are really of high efficacy in its development. It possesses no stone castle of refuge, from which it has but to extend its retractile arms. It is, therefore, exposed to much greater dangers, its whole body being open to the assault of foes. There are two general methods by which protection from these perils is gained : the first by armor ; the second by activity and sen- sory acuteness. The armored animals are necessarily heavier, less ac- tive, and less flexible, than the unarmored. The latter depend for safety on activity and variety of motion, on quickness of sense, and on weapons of defense. They are, consequently, more highly developed than the armored, whose firm coating forms their main protective adaptation. They also come into contact with a much wider range of natural conditions, their more extensive excursions accustoming them to more varied forms of food, adapting them to wider surface and temperature relations, and exposing them to more numerous foes. Thus they must become fitted to a wider environment, and their powers be more spe- cialized ; the naked, flexible, active animal being thus necessarily the highest in point of development. These general views lead us to their particular application to the existing animal types. "We think it can be shown that each type has had full opportunities of unfoldment, and has reached the extreme limit of its line of growth. THE EVOLUTION OF ORGANIC FORM. 85 There are certain requirements of the animal organism to which every adaptation must conform. Underlying the stomachic type is the more primary fact that the natural form of colloid matter is the globe. Like all fluid or semi-fluid matter it tends to curve about a general center of attraction, in distinction to the angular extension of the crystal. This tendency shows itself in all parts of all animal forms, and also in these forms as wholes, the globe being departed from only through functional necessity, or from the superposition of a series of organs, each with a globular tendency, yielding, through mutual pres- sure, a more or less ovoid result. In the Protozoa we have the globular form, diversified by temporary, improvised limbs, or by permanent organs. In the Metazoa variation from the globe takes place in axial directions — the fixed animals hav- ing usually but two axes of departure from the sphere ; the moving animals having ordinarily three axes — a longitudinal, a vertical, and a transverse. The general result is the production of the round, flattened form of the two-axed, and the oval form of the three-axed animals ; the further departure being in the production of limbs — appendages devoted to motion, or to assault and defense. If now we take the Gastrula, the simple stomach-sac, for the primi- tive form of the many-celled animal, and the earliest phase of deriva- tion from the Protozoa, it is easy to perceive that this hollow animal globe may vary in three different modes. First, it may retain its sac-like form and stomach-opening, devel- oping tentacles about the mouth, and radiated body divisions ; thus passing from the single axis of the Gastrula to the double axis of the polyp. Secondly, it may flatten, until it resembles a sack with the open top pressed down upon the bottom, and the sides bulging outward into a circle. If, now, radiated arms extend outward from this rounded side, we have the starfish type of organism. Thirdly — still preserving its affiliation to the globe — it may lengthen instead of flattening. From this mode of development would come the longitudinal type of animals, the vermes, or worm-forms. A still more primitive departure from the original Gastrula form is found in the sponge, in which the body- wall is pierced by minute aper- tures, through which food-bearing currents are drawn into the general internal stomach, and forced out again through the mouth. The low organization of the sponge results from the fact that it does not even require the mouth-arms of the polyp as an aid in food-getting. Its only motive apparatus is the cilia, or vibrating hair, of the Infusoria. Of the three forms which thus seem to be the first natural varia- tions of the Gastrula— the globular, the flattened, and the lengthened — the first two naturally rest on one extremity of the longitudinal or stomach axis ; the other, or mouth extremity, being directed upward. Thus only these two extremities are exposed to diverse conditions, the 86 THE POPULAR SCIENCE MONTHLY. one being in contact with the ground, the other with water or air. The intermediate surface is affected in but one manner. It being every- where similarly influenced, its whole development is similar, and a ra- dial or two-axed form results. In the lengthened forms the longitudinal or intestinal axis naturally becomes horizontal. The two extremities of this axis develop into mouth and vent. But the intermediate portions are also differently conditioned. Vertically a lower face is in contact with the ground, an upper face with water or air. Thus ventral and dorsal surfaces are produced. Transversely, the oj^posite sides are similarly affected, and develop similarly. Gravitation also tends to produce a shortening of the vertical and a widening of the transverse axis. Thus the three- axed animal appears, a lengthened form, with mouth-opening at the anterior-moving extremity, with diverse dorsal and ventral surfaces, with similar lateral surfaces, and with a tendency to become flattened vertically. In this lengthened, or worm type, appears an animal form more highly conditioned than any possible two-axed form, and capable of far higher development. It is much the best adapted for rapid move- ment, its long, narrow shape being well calculated to overcome the frictional resistance of water or au' ; while it is capable of a flexibility not possible to the compact types of animal form. Consequently, from the primitive types of animal form we have so far considered, we find two general lines of development. The first of these is a tendency in the compact types to become lengthened in form, to lose their protective armor, and to assume the free-moving condition — their most advanced genera being thus constituted. On the other hand, a retrograding tendency shows itself in certain sections of the lengthened animal type, compact forms ajipearing. And, significantly, these envelop themselves in shelly or horny armor for protection, be- come sluggish in motion, and fail to develop the acute sensitiveness and other advanced powers of the naked worms. Such being the primitive and secondary form-evolving tendencies, the production of organs of motion is in strict accordance therewith. In the radiated polyps the limbs appear as head-organs. These are so ill-adapted to the production of free motion, that the solitary Polyps have not developed into this condition, except in the case of the Me- dusae or jelly-fish. And these in no instance seek to swim by aid of their arms, a slow movement being gained by umbrella-like contrac- tions of their radiate body disk. In the Echinoderm family — one of the reversions from the longitu- dinal type — the shortening of the intestinal axis has brought it into such close relations with the radiate type that the difference is only clearly distinguishable in its embryo stage of existence. Its intestinal axis has become vertical, and it has gained radiated limbs — not head, but side limbs. By the aid of these the free-moving Echinoderms THE EVOLUTION OF ORGANIC FORM. 87 manage to progress slowly, but they depend more particularly on their armor for protection. In the Mollusk family — another form of reversion from the primi- tive lonsritudinal or three-axed form — the conditions of existence ne- cessitate other motive organs. This family of animals, instead of clothing itself in a dermal armor like the Echinoderms, produces a limy covering, a movable house to which it is not anatomically connected, and which principally differs from the stone mansion of the polyp in being movable. Within this house the mollusk preserves his three- axed form ; having no such strong inducement to yield it as has the Echinoderm. But his contact with exterior nature is but a head and foot contact. He therefore develojDS head-limbs — tentacular organs — while his slow progress is gained by alternate expansions and contrac- tions of a muscular portion of the ventral surface. Thus the lower types of animal form are forced, by the necessities of their environment, to evolve certain general anatomical conditions, which, as we shall hereafter see, act as a fatal drag on their subsequent efforts to occupy the higher fields of life. The worm type has, from the beginning, a marked advantage over them. The creeping forms of this type would naturally tend to de- velop moving organs at their points of contact with the ground, yield- ing ventral limbs, extended along the body. Breathing organs might appear on the dorsal surface, in contact with the water ; or at the mouth, where inflowing currents would yield the fullest water contact. In the swimming w^orms a somewhat different process of limb de- velopment would naturally arise. Here, for the freest degree of mo- tion, some form of fin must replace the limb of the creeping worm. Thei-e is reason to believe that fins first arose as lateral extensions of the flattened body. This general fin — under the late theory of limb development — in time lost its continuity, and broke up into four sepa- rate sections, whence arose the four limbs of the future Vertebrates. The possession of such longitudinal body-limbs or fins gives much greater rapidity of motion to the worm type than is possible to the head-limbed or radiate body-limbed types. As a consequence of their motive facility they remain naked, rapidity of motion and keenness of sense giving them powers of attack and escape not needed by the ten- tacled and armored forms. In fact, the advantage of the longitudinal extension is so patent that we find all the lower types making efforts to attain it, and in this man- ner reaching their highest limit of progression. This constitutes the next step in the evolution of animal form, and one which presents some exceedingly curious phases. The phases here referred to are not displayed by the mollusks or the Echinoderms. We shall therefore first speak of their simpler mode of attaining their highest development. In the mollusk it is attained by a lengthening of the compact body. 88 THE POPULAR SCIENCE MONTHLY. while the shell becomes internal instead of external. It continues to be useful as a basis of muscular attachment, but no longer as a defen- sive armor. The whole development of the mollusks, from the lowest bivalve to the highest univalve form, has tended to the production of head-limbs, and a compact, bag-like body. In their naked state their evolution is limited by this hereditary constitution. Two modes of motion are possessed, the swimming and the creeping. For use in the first there is a fin-like expansion of the body, which enables them 16 move with much rapidity, while backward motion is gained by expulsion of water from between the arm-membranes. But the body continues rigid, and is at a disadvantage as compared with the flexible worm type. Creeping motion is gained by a development of sucking-disks upon the arms, which serve for a slow dragging of the body, turned head downward, and also as an efficient agent in the capture of game. This highest moUusk, the cuttle-fish, is utterly unfitted for a land residence despite its acute sense-organs. The ink-bag, which ena- bles it to conceal itself in the water, would be of no use to it on land ; its tail-fins or its radiated head-arms could not be changed into effi- cient organs of land-motion ; it would, therefore, be at a great disad- vantage as compared with the body-limbed, flexible-framed vertebrates^ Thus the highest development of the mollusk type is unsuited by its defective constitution to a land residence, and can only progress to the limited extent permitted by the restrictions of a water residence. In the Echinoderms a similar lengthening of the body is gained. Of the free forms, we have the flattened starfish, with the arms some- times developed at the expense of the body, the body sometimes at the expense of the arms ; the globular sea-urchin, with its ambulacral arms ; and the lengthened Holothuroid. In this latter is displayed what seems almost an intelligent effort to imitate the worm type. Unlike the other Echinoderms, its intestinal axis becomes horizontal instead of vertical. Thus, like the worms, it attains dorsal and ventral surfaces, exposed to diverse conditions. As a consequence, of its five rows of ambulacral suckers, those on the dorsal surface disappear in the most advanced genera, only the three ventral rows being retained. The distinguishing radiate structure is displayed only by its circle of mouth- tentacles, the food-getting organs. It also loses the calcareous outer armor of the lower Echinoderms, replacing it by a flexible, leathery skin. But, with these several advances toward the worm type, the heredi- tary disadvantages of the Holothuroid act as impassable restrictions to any great development. The organs of the higher senses are wanting. It is in no way adapted to swimming, its exterior organs being quite unfitted to develop into fins. Nor are the ambulacral suckers suited to any rapid progression. An utter change in character would be necessary to adapt them to a walking or running movement. Thus rp 'HE EVOLUTION OF ORGANIC FORM. 89 this line of animal evolution has reached its ultimate at a much lower level than that attained by the Mollusca. But, by this review of what we may, in a figurative sense, call Na- ture's failures in animal evolution, we begin to perceive the requisites to success. The retrograde forms, after again developing into the lengthened type, are constitutionally restricted from gaining certain structural advantages which are primitive possessions of other types. ■ These advantages we may classify as body-limbs, adapted to walk- ing or swimming ; and an articulated body, capable of a flexibility not possible to the compact, single-sectioned animals. All the other ani- mal types, besides those we have considered, have made an effort to attain this articulated structure, sometimes by a very curious process. The success attained in this effort is closely dependent upon the primi- tive structure of the articulated animal, which has placed impassable restrictions in the path of some types. In the polyps and in the articulates the end seems to have been attained by the linking together of a colony of animals, forming a structure, originally compound, which has become simjjle by a division of functions between the successive sections. In the Vertebrata alone has it been attained by the articulation of an originally single animal. The vei'tebrates thus possess special structural advantages denied to the other articulated forms, the com- pound origin of these latter curiously limiting their powers of evolu- tion. In this merging of societies into single animals, Nature presents us instances of every step of the process, from those in which individual- ity remains intact, to those in which it is subordinated to the require- ments of the compound animal. A first step in the process is displayed by the Tunicate mollusks. The Salpa — one form of these shell-less creatures — is a free-moving animal, progressing by the aid of water, which is drawn into one end of its straight intestine and expelled at the other. They exist in two conditions, the single and the compound. In the latter they unite into long chains, not organically connected, but apparently adhering by little suckers. This primitive combination seems assumed for one advantage only, that of aiding their motion. The animals in the chain conti-act and expand simultaneously, the whole chain moving like one lengthened animal. The same end is achieved in a still more curious way in the Pyro- soma, another of the Tunicata. These little creatures so group them- selves as to form a hollow tube, open at one end and closed at the other. The minute animals which compose the walls of this tube have one gill-opening extended outward, the other inward. Thus they draw water from outside and discharge it into the interior of the tube. This being closed at one end, the water is necessarily driven from the 90 THE POPULAR SCIENCE MONTHLY. other, giving to the odd, phosphorescent, living tubes a lengthwise movement through the ocean. The Ascidians — a family of fixed Tunicates — present societies to some extent organically connected. They are grouped by a common connection of their mantles, or rise successively from a common stem, through which an organic unity is established. Yet their individuality continues ; for, if one of the Ascidians has its circulation cut off, by a ligature, from the common stem, it continues to exist independently. In the fixed polyps the subordination of character resembles that of the Ascidians. It is carried further, however. Thus, in some in- stances, not only is the common stem fed by the efforts of a series of individual mouths, but there seems to be a sensitive connection. If, for instance, one of the expanded animals of an Alcyonium community be touched, not only does this animal contract, but gradually the re- maining animals of the community contract also. Again, in the Ilydrozoa, individual members of the community are specialized as reproductive organs, being fed through the common stem by the feeding individuals. In these cases the merging of indi- viduality has extended much beyond the simple case of the Salpne, cer- tain members of a society being specialized as organs of a compound animal. These rei^roductive buds, however, in many cases regain their individuality in a very j^eculiar manner. They separate from the com- mon stem, and continue to exist as free-swimming animals. But their specialized development has produced material modifications in their form and internal organization. They are no longer fixed polyps, but free Medusffi, retaining only a general resemblance to the polyp type, and swimming by means of contractions of their umbrella-like disk. By this strange modification of the polyp form, to achieve special purposes, a new free animal form is produced, which sometimes follows its new line of development so as to yield an animal markedly distinct from its unspecialized brothers of the same community. Such is one of the many strange modes in which Nature has sought to produce new forms of animal life. But the greatest subordination of individuality is shown in the Siphonophorse, a family of Hydrozoa in w^hich a distinct effort seems to be made to attain the elongated, free-swimming form, through com- bination. In some of these the evolution of a colony into a single ani- mal is almost complete. A large number of individuals are connected by a common stem ; but these individuals are so specialized in function as to be no longer capable of a separate existence. They have lost certain powers, and developed others, so that they are reduced to the condition of special organs of a single animal. Some act as food-catch- ing organs, some as mouths, some as reproductive and nursing members, and, by a strange transformation, some have become bell-like organs, which, by successive contractions, expel the water, and force the whole community through the seas. THE EVOLUTION OF ORGANIC FORM. 91 These swimming bells are not unlike the Medusse in this particular, but have become far more specialized than the Medusse, as they possess none of the organs requisite to individual life. In the Physalia, or Portuguese man-of-war, the connecting body is developed into a floating bladder, moving by force of the winds, and with its variously modified polyps beneath it. Such are some of the modes adopted by Nature to produce free mo- tion in the lower types of animal life. The animals produced by this social subordination of function are imperfect because the subordina- tion is indefinite. There is not a single organ adapted to each func- tion, but a variable number. And the very means by which propulsion through the water is gained renders this imperfection necessary. • For, if a single individual constituted each organ, the animal would become compact, and be moved by a single contracting bell. Its powers of motion would be reduced to those of the Medusae, and its organization retrograde toward the original compact stage. This line of progress, with its necessarily imperfect specialization, is evidently incapable of attaining the level of the Echinoderm, much less of the mollusk. But another line — that of the segmented animals — seems much better adapted to attain a high grade of evolution. Not but that its segments possess anatomical characters as stubborn as those of the Radiates, but that these are less restrictive to a high evolution. It is, of course, not the usual view to consider the Articulates as the result of an original social organization. The segments, in the higher genera, are so specialized that they now exist but as organic parts of a single animal. And yet, if we consider the lower articulated worms, evidences of such an origin may be discovered. In these lowest Articulates scarcely any difference is to be traced between the segments. The anterior, from its position, acts as a mouth, but otherwise they are as similar as the individual Salpse. But the most significant feature is that in many cases each of them possesses the organization of an individual. Each segment still retains its separate nervous ganglion, its separate muscles, its separate limbs, frequently its separate breathing organs, and, in a partial degree, its separate cir- culation. These are only subordinated to the extent of being joined by connecting links, while the intestine of each becomes continuous as a common intestine. In fact, this organic individuality is carried, in certain cases, to a yet more significant extent. The organs of sj^ecial sense — the most highly specialized of animal organs — are, in some instances, retained by the separate segments. There are not only existing worms with eyes at each extremity of the body, but others which possess eyes in each separate segment. Thus we are led not alone to the conception of an original animal which became associated into the Articulates, but even to some idea 92 THE POPULAR SCIENCE MONTHLY. of the organization of this primitive animal. If we assign to it the organs still possessed by the segments of the Annelides, we find it to have had an intestine separate from the circulation, being thus superior to the polyps. It had also simple nervous and muscular systems, and immature eyes, a chitinous armor, a water-vascular system, and possi- bly distinct exterior breathing organs and feet. It may, indeed, have been the primitive form from which other animal types besides the Articulates originated — through a diverse process of evolution. It is not improbable that the Articulate condition was reached, not by a combination of free individuals, but by a continued adherence of longitudinal buds. The increase in number of segments by division is still common in Articulates. The minute fresh-water worm called the Nais, is separated into two sections by a bud which appears in the center of the body. One section develops a head and the other a tail, at the ends adjoining the bud. But the bud itself again and again divides, each division becoming a young Nais, so that finally a chain of worms is formed, all organically connected, and fed by the mouth of the anterior Nais. Eventually they sejDarate, each becoming a free individual. The question now arises as to how a developing force would act on such an articulated society. The highest results of evolution are reached through concentration of function. Such specialization is op- posed to a continuous increase in the number of segments, and must tend to the production of a definite organism, of limited extent. The activity of this organism is increased by its gaining limbs more useful than the bristle-like setae of the Annelides. Its range of food expands when its fore-limbs are changed into food-getting organs. Its powers of motion increase when the body is compacted, and the number of joints decreased, by a welding of several segments into one. But whence come such new limbs ? A consideration of their char- acter leads us to the idea that they may proceed from a simple con- tinuance of the budding process, acting, in this case, in a lateral direc- tion instead of lengthwise. For the limbs are hollow, jointed seg- ments, covered with chitine like the body-segments. They seem, in- deed, to be specialized side-segments which have lost their internal organs through disuse, retaining only their chitinous armor, their muscles, and their intestinal cavity. And the successive joints of the limbs appear to be formed by a continuance of the budding process. One evidence of this is the fact that they may be reproduced by budding when broken off at the joint ; and also that lateral budding again takes place at the extremity of the limbs, yielding double tarsi or pincers in the head-limbs. Such is the character of the articulated animal ; and it appears as if this persistent partial individuality of the segments must prevent that complete localization of function which seems necessary to the greatest animal development'. THE EVOLUTION OF ORGANIC FORM. 93 As we ascend to the higher members of the Articulate type, the specialization of function increases, but not sufficiently to obliterate all the individuality of the segments. The tendency in the Arthropods is toward a continuous welding of the segments. Thus, in the Crusta- ceans we find twenty or twenty-one segments compacted into three body sections. In the higher families these three are reduced to two ; and, in the highest crabs, the abdominal section becomes so reduced that all the body functions are performed by a single section. At the same time the chitinous armor of the segments becomes a continuous cortical armor ; and the chain of nerve-ganglia is reduced to a single large ganglion, which supplies nerve-fibers to all the body. In this manner the Crustacean reaches its most specialized condi- tion, but only by a loss of its longitudinal extension, and a return to the compact, slow-moving, armored type of animal. Thus, its highest evolution has produced an organization antagonistic to any advanced degree of development. Of the air-breathing Arthropods the Arachnidoe seem to be closely allied to the Crustaceans. They have the same compactness of organi- zation ; are not, as a rule, adapted to swift motion ; and are inferior to the high Crustaceans from the fact that their tendency is toward development of the abdomen, instead of the head section, as in the crabs. The insects and Myriapods do not possess the relations to the Crus- taceans shown by the spiders and their allies. On the contrary, their larval form seems to indicate a separate line of descent from the worms. Different as insects and Myriapods are in their mature forms, they appear to have had a common origin — the embryo of the Myria- pods passing through a stage that resembles the larval stage of insects. They seem, indeed, to have developed from their primitive form in opposite directions, the segments being multiplied in the Myriapods and reduced in the insects. The embryo of the Myriapod has at first but three pairs of legs. At a later period posterior legs bud succes- sively from the new-formed segments. There seems to be no fixed limit to the number of segments, since they continue to increase throughout life. And their individuality is strongly declared, each segment possessing the organs necessary to a separate life, as a nerve- ganglion and fibers, breathing organs, muscles, an intestine, and a vas- cular space. These organs, if redeveloped from their partly aborted condition, might well suffice to sustain life in separate animals. Even in the highest of the Arthropods — the insects — this heredi- tary individual organization of the segments continues manifest ; these organically independent members of the society stubbornly resist the cession of their primitive functions, only partly yielding to the com- mon needs, and thus retaining a generalization of function which is repressive of any high development. The animal best suited for progression is one which has all its 94 THE POPULAR SCIENCE MONTHLY. functions separately concentrated. Its aeration, its circulation, its sensation must have single, localized centers, and its limbs be reduced to the smallest possible number, and separated in duty. These requi- sites are only fully attained in the human form. They are constitu- tionally prohibited to the segmented animals. In the insects the persistent individuality of the segments is shown partly in their six legs, each pair attached to a segment ; but more par- ticularly in their generalized nervous and respiratory systems. To a great extent each segment preserves its nerve-ganglion. So, to a similar extent, each segment does its own breathing, the whole body becom- ing one generalized lung. The blood circulation, which is only partly confined to specialized blood-vessels, is accompanied by a general air circulation. There is nothing resembling the localized relations of these circulating systems as seen in the Vertebrates. Such are the constitutional limitations to development in the Articulates, probably resulting from their social origin. The effort to overcome these limitations in the crabs has resulted in organic conditions opposed to a high development. How is it in the insects ? In them the segments are so welded as to form three distinct body sections. In the higher insects the individuality of the segments is so reduced that the nerve-ganglia of the thoracic segments are concen- trated into one ganglion, while a single head-ganglion, of large size, ofiiciates as a brain. Their muscular force is greater in projjortion than that of Vertebrates, so that they are strong, active, and endur- ing in bodily vigor. What natural influence is it that has restricted their development ? This may not be difficult to discover. "We have seen that the too great compacting of the articulated body, as in the crabs and spiders, has proved a hindrance to develoi^ment. The three sections of the in- sect body, each devoted to a single class of duties, has given them varie- ty of motion, and more diversified food-getting functions. But it has otherwise worked injuriously. Rapid variations in movement require that these sections should be united by flexible joints. But these joints are articulations of an external skeleton, and can only be pro- duced by a deep depression of this cortical armor into the regions dividing the sections. Thus the continuity of the body is almost broken at these joints. A similar relation exists between the joints of the limbs. It seems evident from these considerations that the insect is not con- stituted to attain a large size. Conditions which are suitable to a small body might prove utterly unfitted to the requirements of a larger organism. Let us imagine an insect of the size of an ox ; walking on its six many-jointed, hollow legs ; its body composed of three almost separate sections ; breathing through air-holes in its sides, its whole body but an air-tank, or lung. Even if such a growth were possible, it would obviously be at a disadvantage as compared with the Verte- THE EVOLUTION OF ORGANIC FORM. 95 brates. Whatever size it might have attained in the absence of the Vertebrata, it certainly would be unfitted to compete with these bet- ter adapted animals for the possession of the higher fields of life. Insects thus seem restricted to a small form, contracted localities, and a narrow range of conditions. The ants, their highest form, is one of the most limited in range. It is highest in having best suc- ceeded in adapting nature to its needs, and, in so doing, having devel- oped a superior mentality ; but it can not advance beyond the needs of its contracted environment. In the various animal types we have considered, Nature seems to have exhausted all side-issues in her efforts to produce an animal form adapted to a high grade of evolution. The persistent individuality of the segments hinders a colony from merging into an individual capa- ble of an advanced phase of development. Another and simpler method remains to be considered ; the direct elongation of a single individual — not the elongation of a previously organized animal, but a primary derivative, unshackled by anatomical difficulties. For high progress in this individual, certain conditions are neces- sary. It must not seek safety in a coat of armor. It must save itself from danger by powers of flight and acuteness of sense. In a water residence the most effective flight is gained by swimming. Therefore our worm must become a swimming animal, its sides being flattened into swimming-flaps. In such an individual the functions would be specialized, as they were in the individuals which became welded into the Articulate. Indeed, the Vertebrate and the Articulate may have had a single ori- gin in this primitive organic form. The swimming worm we are considering has no hindrances to spe- cialization of function. His side-flaps may be reduced to local fins. His intestinal tube — not acting as a series of sectional stomachs — may become localized in function, its anterior portion acting as a lung, its posterior portion as a stomach. There are several advantages in this. The circulation is no longer exposed to danger by a perilous thinning of the outer surface into branchiae. The food being drawn in by water-currents, oxygen is extracted from the water by the anterior intestine, and aliment by the posterior. Similarly, the nerve and muscle systems are single and specialized, and the sense organs local. But another condition is necessary to the full adaptation of this swimming animal to its situation. Its swift motion necessitates mus- cular vigor, and requires some firm point of attachment for the mus- cles. In all the armored types the shell, or outer coating, serves for this purpose. In the naked worm there is no such exterior point of attachment, and an interior one must be developed. Thus we have arrived at the necessity of an interior skeleton, an 96 THE POPULAR SCIENCE MONTHLY, organic condition not disjjlayed in all the vast field of life we have so far reviewed, except imperfectly, in the Cephalopod mollusks. This is, at first, attained by the indui'ating of a dorsal layer of flesh into a cartilaginous cord, which stiffens the body while leaving it flexible, and furnishes points for muscular attachment. Only a few instances remain of this earlier condition of the Verte- brate type. All others have disappeared. In the embryo of a Tuni- cate animal, the Ascidia, both the cartilaginous cord and the intestinal branchiae appear. In its mature form it becomes a fixed animal, and loses this cord. But in the Ai^pendicularia, a related animal, the cord is retained throughout life. It is also retained, in a more complete develoiDment, in the Lancelet Amphioxus, a creature having strong vertebrate affinities in its extended nerve-cord and its general func- tional system. But one further step is required to produce the typical Vertebrate from such an original. This is the formation of joints in the cartilagi- nous cord, when it has become so firm as to resist the lateral move- ments of the body, or is hardened by deposition of carbonate of lime. There is nothing in this like the welding of segments in the Articu- late. The vertebrate joints display none of the separate vital animal functions. They yield every indication of being produced in the mode indicated, by the stress of an undulating body. The joints in the sub- sequent limbs resemble them in character, and seem to be formed in the same manner. The Lancelet is not jointed ; it is a single indi- vidual. But the worm from which the Articulate arises is jointed, and each joint is possessed of all the vital functions. Thus it appears that the Vertebrate animal starts in the race of life with advantages possessed by none of its competitors. It remains to trace the steps of its develoi^ment. THE PEOFUSIOK OF LIFE.* By ARABELLA B. BUCKLEY. I "WONDER whether it ever occurs to most people to consider how brimful our world is of life, and what a different place it would be if no living thing had ever been upon it ? From the time we are born till we die, there is scarcely a waking moment of our lives in which our eyes do not rest either upon some living thing or upon things which have once been alive. Even in our rooms, the wood of our furniture and our doors could never have been if life did not exist ; the paper on our walls, the carpet on our floors, the clothes on our back, the cloth upon the table, are all made of materials which life has * From the Introduction to " Life and her Children," in press by D. Appleton & Co. THE PROFUSION OF LIFE. 97 produced for us ; nay, the very marble of our mantel-piece is the work of once living animals, and is composed of their broken shells. The air we breathe is full of invisible germs of life ; nor need we leave the town and go to the country in search of other living beings than man. There is scarcely a street or alley where, if it be neglected for a time, some blade of grass or struggling weed does not make its appearance, pushing its way through chinks in the pavement or the mortar in the wall ; no spot from which we can not see some insect creeping, or fly- ing, or spinning its web, so long as the hand of man does not destroy it. And when we go into the quiet country, leaving man and his works behind, how actively we find life employed ! Covering every inch of the ground with tiny plants, rearing tall trees in the forest, filling the stagnant pools full of eager, restless beings ; anywhere, everywhere, life is at work. Look at the little water-beetles skimming on the sur- face of the shady wayside pool, watch the Avater-snails feeding on the muddy bank, notice the newts putting their heads above water to take breath, and then remember that besides these and innumerable other water animals visible to the naked eye, the fairy-shrimp and the water- flea, and other minute animals, are probably darting through the water, or floating lazily near its surface, while the very scum which is blown in ridges toward one corner of the pool is made up of microscopic animals and plants. Then, as we pass over plain, and valley, and mountain, we find things creeping innumerable, both great and small, hidden in the moss or the thick grass, rolled up in the leaves, boring into the stems and trunks of trees, eating their way underground or into even the strong- est rock. The lion, the tiger, and the elephant, roaming over Asia, Africa, and India, rule a world of their own where man counts for very little. Even in our own thickly peopled country hares and rabbits multiply by thousands in their burrows, and come to frolic in the dusk of evening when all is still. The field-mice, land and water rats, squir- rels, weasels, and badgers, have their houses above and below ground, while insects are to be found everywhere, testifying to the abundance of life. Not content, moreover, with filling the water and covering the land, this same silent power peoples the atmosphere, where tiny bats, butterflies, bees, and winged insects of all forms and shapes and colors, fight their way through the ocean of air, while birds, large and small, sail among its invisible waves. And by and by we reach the sea, and there we find masses of tangled seaweed, the plants of the salt water, while all along the shores myriads of living creatures are left by the receding tide. In the rocky pools we find active life busily at work. Thousands of tiny acorn- shells, scarcely larger than the head of a good-sized pin, cover the rocks and fling out their thread-like arms in search of food. Small crabs scramble along, or ST^dm across the pools, sand-skippers dart through the water, feeding on the delicate green seaweed, which in its VOL. XVIII. — 7 98 THE POPULAR SCIENCE MONTHLY. turn is covered with minute shells not visible to the naked eye, and yet each containing a living being. Anywhere, .everywhere, creatures are to be found, and even if we sail away over the deep silent ocean and seek what is in its depths, there again we find abundance of life, from the large fish and other monsters which glide noiselessly along, lords of the ocean, down to the jelly-masses floating on the surface, and the banks of rocky coral built by drops of living slime in the midst of the dashing waves. There is no spot on the surface of the earth, in the depths of the ocean, or in the lower currents of the air, which is not filled with life whenever and wherever there is room. The one great law which all living beings obey is to " increase, multiply, and replenish the earth " ; there has been no halting in this work from the day when first into our planet from the bosom of the great Creator was breathed the breath of life, the invisible mother ever taking shape in her children. No matter whether there is room for more living forms or not, still they are launched into the world. The little seed, which will be stifled by other plants before it can put forth its leaves, nevertheless thrusts its tiny root into- the ground and tries to send a feeble shoot upward. Thousands and millions of insects are born into the world every mo- ment which can never live, because there is not food enough for all. If there were only one single plant in the whole world to-day, and it produced fifty seeds in a year, and could multiply unchecked, its de- scendants would cover the whole globe in nine years.* But, since other plants prevent it from spreading, thousands and thousands of its seeds and young plants must be formed only to perish. In the same way one pair of birds having four young ones each year, would, if all their children and descendants lived and multiplied, produce two thou- sand million in fifteen years,f but, since there is not room for them, all but a very few must die. What can be the use of this terrible overcrowding in our little world ? "Why does this irresistible living breath go on so madly, urging one little being after another into existence ? Would it not be better if only enough were born to have plenty of room and to live comfort- ably ? Wait a while before you decide, and think what every creature needs to keep it alive. Plants, it is true, can live on water and air, but animals can not ; and, if there wei'e not myriads of plants to spare in the world, there would not be enough for food. Then consider again how many animals live upon each other. If worms, snails, and insects were not over-abundant, how would the birds live ? Upon what would lions and tigers and wolves feed if other animals were not plentiful, while, on the other hand, if a great number of larger animals did not die and decay, what would the flesh-feeding snails and maggots and other insects find to eat ? And so we see that for this reason alone * Huxley. f Wallace. THE PROFUSION OF LIFE, 99 there is some excuse for the over-abundance of creatures which life thrusts into the world. But there is something deeper than this to consider. If in a large school every boy had a prize at the end of the half year, whether he had worked or not, do you think all the boys would work as hard as they do or learn as well ? If every man had all he required and could live comfortably, and bring up his children to enjoy life without work- ing for it, do you think people would take such trouble to learn trades and professions, and to improve themselves so as to be more able than others ? Would they work hard day and night to make new inven- tions, or discover new lands, and found fresh colonies, or be in any way so useful or learn so much as they do now ? No, it is the struggle for life and the necessity for work which make people invent and plan, and improve themselves and things around them. And so it is also with plants and animals : life has to educate all her children, and she does it by giving the prize of success, of health, and strength, and enjoyment to those who can best fight the battle of existence, and do their work best in the world. Every plant and every animal which is born upon the earth has to get its own food and earn its own livelihood, and to protect itself from the attacks of others. Would the spider toil so industriously to spin her web if food came to her without any exertion on her part ? Would the caddis-worm have learned to build a tube of sand and shells to pro- tect its soft body, or the oyster to take lime from the sea- water to form a strong shell for its home, if they had no enemies to struggle against and needed no protection ? Would the bird have learned to build her nest or the beaver his house if there were no need for their industry ? But as it is, since the whole world is teeming with life, and count- less numbers of seeds and eggs and young beginnings of creatures are only waiting for the chance to fill any vacant nook or corner, every living thing must learn to do its best and to find the place where it is most useful, and least likely to be destroyed by others. And so it comes to pass that the whole planet is used to the best advantage, and life teaches her children to get all the good out of it that they can. If the ocean and the rivers be full, then some must learn to live on the land, and so we have, for example, water-snails and land-snails, and whereas the one kind can only breathe by gills in the water, the other breathes by means of lungs in the air, while between these are some, such as the river-snails of the tropics, which have both gills and lungs, and can breathe in both water and air. We have large whales sailing as monarchs of the oceans, and walruses and seals fishing in its depths for their food, while all other animals of their kind live on the land. Then, again, while many creatures love the bright light, others take advantage of the dark corners where room is left for them to live. You can not lift a stone by the seaside but what you will find some living thing under it, nor turn up a spadeful of earth without disturb- loo THE POPULAR SCIENCE MONTHLY. ing some little creature which is content to find its home and its food in the dark ground. Nay, many animals for whom there is no chance of life on the earth, in the water, or in the air, find a refuge in the bodies of other animals and feed on them. But in order that all these creatures may live, each in its different way, they must have their own particular tools to work with, and weapons with which to defend themselves. Now, all the tools and weapons of an animal grow upon its body. It works and fights with its teeth, its claws, its tail, its sting, or its feelers ; or it constructs cunning traps by means of material which it sucks out of the water, as in the case of the oyster, or gives out from its own body, like the spider. It hides from its enemies by having a shape or color like the rocks or the leaves, the grass or the water, in which it lives. It pro- vides for its young ones either by getting food for them, or by putting them, even before they come out of the Qgg, into places where their food is ready for them as soon as they are born. So that the whole life of an animal depends upon the way in which its body is made ; and it will lead quite a different existence according to the different ' tools with which life provides it, and the instincts which a long education has been teaching to its ancestors for ages past. It will have its own peculiar struggles and difliculties and successes and enjoyments, according to the kind of bodily powers which it pos- sesses, and the study of these helps us to understand its manner of existence. And now, since we live in the world with all these numerous com- panions, which lead, many of them, such curious lives, trying, like our- selves, to make the best of their short time here, is it not worth while to learn something about them ? May we not gain some useful hints by watching their contrivances, sympathizing with their difficulties, and studying their history ? And, above all, shall we not have some- thing more to love and to care for when we have made acquaintance with some of life's other children besides ourselves ? The one great difficulty, however, in our way, is how to make ac- quaintance with such a vast multitude. Most of us have read anec- dotes about one animal or another, but this does not give us any clew to the history of the whole animal world ; and, without some such clew, the few observations we can make for ourselves are very unsatis- factory. On the other hand, most people will confess that books on 2;oology, where accounts are given of the structure of different classes of animals, though very necessary, are rather dull, and do not seem to help us much toward understanding and loving these our fellow creatures. What we most want to learn is something of the lives of the differ- ent classes of animals, so that when we see some creature running away from us in the woods, or swimming in a pond, or darting through the air, or creeping on the ground, we may have an idea what its ob- CRITICISMS CORRECTED. loi ject is in life— bow it is enjoying itself, what food it is seeking, or from what enemy it is flying. And, fortunately for us, there are an order and arrangement in this immense multitude, and in the same way as we can read and under- stand the history of different nations which form the great human family spread over the earth, and enter into their feelings and their struggles, though we can not know all the people themselves ; so, with a little trouble, we may learn to picture to ourselves the general life and habits of the different branches of the still greater familyof life, so as to be ready, by and by, to make personal acquaintance with any particular creature if he comes in our way. CEITICISMS COREECTED. By HEEBERT SPENCEE. II. T. E. CLIFFE LESLIE. AN objection made to the formula of evolution by a sympathetic critic, Mr. T. E. Cliffe Leslie, calls for notice. It is urged in a spirit widely different from that displayed by Mr. Kirkman and his applauder. Professor Tait ; and it has an apparent justification. Indeed, many readers, who before accepted the formula of evolution in full, will, after reading Mr. Cliffe Leslie's comments, agree with him in thinking that it is to be taken with the qualifications he points out. We shall find, however, that a clearer apprehension of the meanings of the words used and a clearer apprehension of the formula in its totality exclude the criticisms Mr. Leslie makes. In the first place he dissociates from one another those traits of evolution which I have associated, and which I have alleged to be true only when associated. He quotes me as saying that a change from the homogeneous to the heterogeneous characterizes all evolution ; and he puts this at the outset of his criticism as though I made this change the primary characteristic. But if he will refer to " First Principles," Part II, Chapter XIV (in the second and subsequent editions), he will find it shown that under its primary aspect evolution " is a change from a less coherent form to a more coherent form, consequent on the dissi- pation of motion and integration of matter." The next chapter con- tains proofs that the change from homogeneity to heterogeneity is a secondary change, which, when conditions allow, accompanies the change from the incoherent to the coherent. At the beginning of the chapter after that come the sentences — " But now, does this gen- eralization express the whole truth ? Does it include everything essen- tially characterizing evolution and exclude everything else ? . . . A 102 THE POPULAR SCIENCE MONTHLY. critical examinatiou of the facts will show that it does neither." And the chapter then goes on to show that the change is from an indefinite incoherent homogeneity to a definite coherent heterogeneity. Further qualifications contained in a succeeding chapter bring the formula to this final .form : " Evolution is an integration of matter and concomi- tant dissipation of motion ; during which the matter passes from an indefinite, incoherent homogeneity to a definite, coherent heterogene- ity ; and during which the retained motion undergoes a parallel trans- formatioEP." Now, if these various traits of the process of evolution are kept simultaneously in view, it will be seen that most of Mr. Cliffe Leslie's objections fail to apply. He says : " The movement of language, law, and political and civil union, is for the most part in an opposite direc- tion. In a savage country like Africa, speech is in a perj^etual flux, . and new dialects spring up with every swarm from the parent hive. In the civilized world the unification of language is rapidly proceed- ing." Here two different ideas are involved — the evolution of a lan- guage considered singly, and the evolution of languages considered as an aggregate. Nothing which he says implies that any one language becomes, during its evolution, less heterogeneous. The disappearance of dialects is not a progress toward the homogeneity of a language, but is the final triumph of one variety of a language over the other varie- ties, and the extinction of them : the conquering variety meanAvhile becoming within itself more heterogeneous. This, too, is the process which Mr. Leslie refers to as likely to end in an extinction of the Cel- tic languages. Advance toward homogeneity would be shown if the various languages in Europe, having been previously unlike, were, while still existing, to become gradually more like. But the supplant- ing of one by another, or of some by others, no more implies any ten- dency of languages to become alike than does the supplanting of species, genera, orders, and classes of animals, one by another, during the evolution of life, imply the tendency of organisms to assimilate in their natures. Even if the most heterogeneous creature, man, should overrun the earth and extirpate the greater part of its other inhab- itants, it would not imply any tendency toward homogeneity in the proper sense. It would remain true that organisms tend perpetually toward heterogeneity, individually and as an assemblage. Of course, if all kinds but one were destroyed, they could no longer display this tendency. Display of it would be limited to the remaining kind, which would continue, as now, to show it in the formation of local varie- ties, becoming gradually more divergent ; and the like is true of lan- guages. In the next case Mr. Leslie identifies progressing unification with advance toward homogeneity. His words are : " Already Europe has nearly consolidated itself into a heptarchy, the number of states into which England itself was once divided ; and the result of the American CRITICISMS CORRECTED. 103 war exemplifies the prevalence of the forces tending to homogeneity over those tending to heterogeneity." To this the reply is that these cases exemplify, rather, the prevalence of the forces which change the incoherent into the coherent — which effect integration ; that is, they exemplify evolution under its primary aspect. In the " Principles of Sociology," Pait II, Chapter III, Mr. Leslie will find numerous kindred cases brought in illustration of this law of evolution. To which add that such integrations bring after them greater heterogeneity, not greater homogeneity. The divisions of the heptarchy were societies substantially like one another in their structures and activities ; but the parts of the nation which correspond to them have been differ- entiated into parts carrying on varieties of occupations with entailed unlikenesses of structures — here purely agricultural, there manufac- turing ; here predominantly given to coal-mining and iron-smelting, there to weaving ; here distinguished by scattered villages, there by clusters of large towns. Again, it is alleged that an increasing homogeneity is shown in fashion. " Once every rank, profession, and district had a distinctive garb ; now all such distinctions, save with the priest and the soldier, have almost disappeared among men." But while for a reason, to be presently pointed out, there has occurred a change which has abolished one order of differences, differences of another order, far more multi- tudinous, have arisen. Nothing is more striking than the extreme heterogeneity of dress at the present day. As Mr. Leslie alleges, the dresses of those forming each class were once all alike ; now no two dresses are alike. Within the vague limits of the current fashion, the degree of variety in women's costumes is infinite ; and even men's cos- tumes, though having average resemblances, diverge from one another in colors, materials, and detailed forms in innumerable ways. Other instances given by Mr. Leslie concern the organizations for carrying on production and distribution. He argues that "in the in- dustrial world a generation ago a constant movement toward a differ- entiation of employments and functions appeared ; now some marked tendencies to their amalgamation have begun to disclose themselves. Joint-stock companies have almost effaced all real division of labor in the wide region of trade within their operation." Here, as before, Mr. Leslie represents amalgamation as equivalent to increase of homoge- neity ; whereas amalgamation is but another name for integration, which is the primary process in evolution, and which may, and does, go along with increasing heterogeneity in the amalgamated things. It can not be said that a joint-stock banking company, with its proprie- tory and directors in addition to its officers, contains fewer unlike parts than does a private banking establishment : the contrary must be said. A railway company has far more numerous functionaries with different duties than had the one, or the many coaching establishments it re- placed. And then, apart from the fact that the larger aggregate of 104 THE POPULAR SCIENCE MONTHLY. cooperators who, as a company, carry on, say, a j^rocess of manufacture, is more complex as well as more extensive, there is the fact, here chiefly to be noted, that the entire assemblage of industrial structures is, by the addition of these new structures, made more heterogeneous than before. Had all the smaller manufacturing establishments car- ried on by individuals or firms been destroyed, the contrary might have been alleged ; but, as it is, we see that in addition to all the old forms there have come these new forms, making the totality of them more multiform than before. Mr. Leslie further illustrates his inter- pretation by saying : •" Many of the things for sale in a village huck- ster's shop were formerly the subjects of distinct branches of business in a large town ; now the wares in which scores of different retailers dealt are all to be had in great establishments in New York, Paris, and London, which sometimes buy direct from the producers, thus also eliminating the wholesale dealer." Replies akin to the preceding ones are readily made. The first is that wholesale dealers have not been at present eliminated ; and can not be so long as the ordinary shopkeep- ers survive, as they will certainly do. In the smaller places, forming the great majority of places, these vast establishments can not exist ; and in them, shopkeepers carrying on business as at present, will con- tinue to necessitate wholesale dealers. Even in large jjlaces the same thing will hold. It is only people of a certain class, able to pay ready money and willing to go great distances to purchase, who frequent these large establishments. Those who live from hand to mouth, and those who prefer to buy at adjacent places, will maintain a certain pro- portion of shops, and the wholesale distributing organization needed for them. Again, we have to note that one of these great stores, such as Whiteley's or Shoolbred's, does not within itself display any advance toward homogeneity or despecialization ; for it is made up of many separate departments, with their separate heads, carrying on business substantially separate — all superintended by one owner. It is nothing but an aggregate of shops under one roof instead of under the many roofs covering the side of a street ; and exhibits just as much hetero- geneity as the shops do when arranged in line instead of massed to- gether. That which it really illustrates is a new form of integration, which is the primary evolutionary process. And then, lastly, comes the fact that the distributing organization of the country, considered as a whole, is by the addition of these establishments made more hete- rogeneous than before. All the old types of trading concerns continue to exist ; and here are new types added, making the entire assemblage of them more varied. From these objections made by Mr. Leslie, which I have endeavored to show result from misapprehensions, I pass to two others which are to be met by taking account of certain complicating facts liable to be overlooked, Mr. Leslie remarks that " in the early stages of social progress, again, a differentiation takes place, as Mr. Spencer has ob- CRITICISMS CORRECTED. 105 served, between political and industrial functions, which fall to distinct classes : now a man is a merchant in the morning and a legislator at night ; in mercantile business one year, and the next, perhaps, head of the navy, like Mr. Goschen or Mr. W. H. Smith." Nothing contained in this volume explains the seeming anomaly here exemplified ; but any one who turns to a chapter in the second part of the " Principles of Sociology," entitled " Social Types and Metamorphoses," will there find a clew to the explanation of it, and will see that it is a phenomenon consequent on the progressing dissolution of one type and evolution of another. The doctrine of evolution, currently -regarded as referring only to the development of species, is erroneously supposed to imply some intrinsic proclivity in every species toward a higher form ; and, similarly, a majority of readers make the erroneous assumption that the transformation which constitutes evolution, in its wider sense, im- plies an intrinsic tendency to go through those changes which the for- mula of evolution expresses. But all who have fully grasped the argu- ment of this work will see that the process of evolution is not neces- sary, but depends on conditions ; and that the prevalence of it in the universe around is consequent on the prevalence of these conditions : the frequent occurrence of dissolution showing us that, where the con- ditions are not maintained, the reverse process is quite as readily gone through. Bearing in mind this truth, we shall be prepared to find that the progress of a social organism toward more heterogeneous and more definite structures of a certain type continues only as long as the actions which produce these effects continue in play. We shall expect that, if these actions cease, the progressing transformation will cease. We shall infer that the particular structures which have been formed by the activities carried on will not grow more heterogeneous and more definite ; and that if other orders of activities, implying other sets of forces, commence, answering structures of another kind will begin to make their appearance, to grow more heterogeneous and definite, and to replace the first. And it will be manifest that while the transition is going on — while the first structures are dissolving and the second evolving — there must be a mixture of structures causing apparent con- fusion of traits. Just as during the metamorphoses of an animal which, having during its earlier existence led one kind of life, has to develop structures fitting it for another kind of life, there must occur ^ blur- ring of the old organization while the new organization is becoming distinct, leading to transitory anomalies of structure, so, during the metamorphoses undergone by a society in which the militant activities and structures are dwindling while the industrial are growing, the old and new arrangements must be mingled in a perplexing way. On read- ing the chapter in the "Principles of Sociology" which I have named, Mr. Leslie will see that the above facts referred to by him are interpret- able as consequent on the transition from that type of regulative organ- ization proper to militant life to that type of regulative organization io6 THE POPULAR SCIENCE MONTHLY. proper to industrial life ; and that, so long as these two modes of life, utterly alien in their natures, have to be jointly carried on, there will con- tinue this jumbling of the regulative systems they respectively require. The second of the objections above noted, as needing to be other- wise dealt with than by further explanation of the formula of evolu- tion, concerns the increase of likeness among developing systems of civil law ; in proof of which increase of likeness Mr. Leslie quotes Sir Henry Maine to the effect that " all laws, however dissimilar in their infancy, tend to resemble each other in their maturity" : the implication to which Mr. Leslie draws attention being, that in respect of their laws societies become not more heterogeneous but more homo- geneous. Now, though in their details systems of law will, I think, be found to acquire, as they evolve, an increasing number of differ- ences from one another, yet in their cardinal traits it is probably true that they usually approximate. How far this militates against the formula of evolution we shall best see by first considering the analogy furnished by animal organisms. Low down in the animal kingdom there are simple mollusks with but rudimentary nervous systems — a ganglion or two and a few fibers. Diverging from this low type we have the great sub-kingdom constituted by the higher mollusca and the still greater sub-kingdom constituted by the vertebrata. As these two types evolve, their nervous systems develop ; and though in the highest members of the two they remain otherwise unlike, yet they ajj- proximate in so far that each acquires great nervous centers : the large cephalopods have clustered ganglia which simulate brains. Compare, again, the mollusca and the articulata in respect of their vascular sys- tems. Fundamentally unlike as these are originally, and remaining unlike as they do throughout many successive stages of ascent in these two sub-kingdoms, they nevertheless are made similar in the highest forms of both by each having a central propelling organ — a heart. Now, in these and in some cases which the external organs furnish, such as the remarkable resemblance evolution has produced between the eyes of the highest mollusca and those of the vertebrata, it may be said that there is implied a change toward homogeneity. No zo- ologist, however, would admit that these facts really conflict with the general law of organic evolution. As already explained, the tendency to progress from homogeneity to heterogeneity is not intrinsic but ex- trinsic. Structures become unlike in consequence of unlike exposures to incident forces. This is so with organisms as wholes, which, as they multiply and spread, are ever falling into new sets of conditions ; and it is so with the parts of each organism. These pass from primitive likeness into unlikeness as fast as the mode of life places them in dif- ferent relations to actions — primarily external and secondarily inter- nal ; and with each successive change in mode of life new unlikenesses are superposed. One of the implications is that, if in organisms other- wise different there arise like sets of conditions to which certain parts CRITICISMS CORRECTED. 107 are subject, such parts will tend toward likeness ; and this is what happens with their nervous and vascular systems. Duly to coordi- nate the actions of all parts of an active organism, there requu*es a controlling apparatus ; and the conditions to be fulfilled for perfect coordination are conditions common to all active organisms. Hence, in proj)ortion as fulfillment approaches completeness in the highest or- ganisms, however otherwise unlike their types are, this apparatus ac- quires in all of them certain common characters — especially extreme centralization. Similarly with the apparatus for distributing nutri- ment. The relatively high activity accompanying superior organiza- tion implies great waste ; great waste implies active circulation of blood ; active circulation of blood implies eificient propulsion ; so that a heart becomes a common need for highly evolved creatures, however otherwise unlike their structures may be. Thus is it, too, with socie- ties. As they evolve, there arise certain conditions to be fulfilled for the maintenance of social life ; and, in proportion as the social life be- comes high, these conditions need to be more effectually fulfilled. A legal code expresses one set of these conditions. It formulates certain regulative principles to which the conduct of citizens must conform that social activities may be harmoniously carried on. And, these reg- ulative principles being in essentials the same everywhere, it results that systems of law acquire certain general similarities as the most de- veloped social life is approached. These special replies to Mr. Leslie's objections are, however, but introductory to the general reply ; which would be, I think, adequate even in their absence. Mr. Leslie's method is that of taking detached groups of social phenomena, as those of language, of fashion, of trade, and arguing (though, as I have sought to show, not effectually) that their later transformations do not harmonize with the alleged general law of evolution. But the real question is, not whether we find ad- vance to a more definite coherent heterogeneity in these taken sepa- rately, but whether we find this advance in the structures and actions of the entire society. Even were it true that the law does not hold in certain orders of social processes and products, it would not follow that it does not hold of social processes and products in their totality. The law is a law of the transformation of aggregates ; and must be tested by the entire assemblages of phenomena which the aggregates present. Omitting societies in states of decay and dissolution, which exhibit the converse change, and contemplating only societies which are growing, Mr. Leslie will, I think, scarcely allege of any one of them that its structures and functions do not, taken altogether, exhibit increasing heterogeneity. And, if, instead of taking each society as an aggregate, he takes the entire aggregate of societies which the earth supports, from primitive hordes up to highly civilized nations, he will scarcely deny that this entire aggregate has been becoming more various in the forms of societies it includes, and is still becoming more various. io8 THE POPULAR SCIENCE MONTHLY. HYPNOTISM.* By G. J. ROMANES. CONSIDERING the length of time that so-called " animal magnet- ism," " mesmerism," or " electro-biology," has been before the world, it is a matter of surprise that so inviting a field of physiological inquiry should have been so long allowed to lie fallow. A few scientific men in France and Germany have indeed, from time to time, made a few observations on what Preyer has called the " Kataplectic state " as artificially induced in human beings and sundry species of animals ; but anything resembling a systematic investigation of the remarkable facts of mesmerism has not hitherto been attempted by any physiolo- gist in our generation. The scientific world will therefore give a more than usually hearty welcome to a treatise which has just been published upon the subject by a man so eminent as Heidenhain. The research of which this treatise is the outcome is in every way worthy of its dis- tinguished author ; for it serves not only to present a considerable and systematic body of carefully observed facts, but also to lead the way for an indefinite amount of further inquiry along the lines that it has opened up. Heidenhain conducted his investigations on medical men and stu- dents as his subjects, one of them being his brother. He found that, in the first or least profound stage of hypnotism, the patient, on being awakened, can remember all that happened during the state of mes- meric sleep ; on awakening from the second or more profound stage, the patient can only partially recollect what has happened ; while in the third, or most profound stage, all power of subsequent recollection is lost. But, during even the most profound stage, the power of sen- sory perception remains. The condition of the patient is then the same, so far as the reception of sensory impressions is concerned, as that of a man whose attention is absorbed or distracted ; he sees sights, hears sounds, etc., without knowing that he sees or hears them, and he can not afterward recollect the impressions that were made. But the less profound stages of hypnotism are paralleled by those less profound conditions of reverie in which a passing sight or sound, although not noticed at the time, may be subsequently recalled by an effort of the will. Further on in his treatise Heidenhain tells us that, even when all memory of what has passed during the hypnotic state is absent on awakening, it may be aroused by giving the patient a clew, just as in the case of a forgotten dream. This clew may consist only " * Dor sogenannte thierische Magnetismus." Physiologische Beobachtungen, von Dr. Rudolf Heidenhain, ord. Professor der Physiologic und Director der physiologischcn In- stitutes zu Breslau. (Breitkopf und Hartel, Lcipsic, 1880.) HYPNOTISM. 109 of a single word in a sentence. Thus, for instance, if a line of poetry- is read to a patient during his sleep, the whole line may sometimes be recalled to his memory, when awake, by repeating a single word of the line. Again, we know from daily experience that the most compli- cated neuro-muscular actions — such as those required for piano-play- ing— become by frequent repetition " mechanical," or performed with- out consciousness of the processes by which the result is achieved. So it is in the case of hypnotism. Actions which have been previously- rendered mechanical by long habit are, in the gtate of hypnotism, per- formed automatically in response to their appropriate stimuli. There being a strong tendency to imitate movements, these appropriate stim- uli may consist in the operator himself performing the movements. Thus when Heidenhain held his fist before his hypnotized subject's face, his subject immediately imitated the movement ; when he opened his hand his subject did the same, provided that his hand was visible to his subject at the time. Also, when he clattered his teeth, the hypnotized patient repeated the movement, even though the patient could only hear, and not see, the movement ; similarly, the patient would follow him about the room, providing that in walking he made sufficient noise to constitute a stimulus to automatic walking on the part of his patient. In order to constitute stimuli to such automatic movements, the sounds or gestures must stand in some such customary- relation to the movements that the occurrence of the former naturally suggests the latter. Another characteristic of the hypnotic state is that of an extraor- dinary exaltation of sensibility, so that stimuli of various kinds, al- though much too feeble to evoke any response in the ordinary condi- tion of the nervous system, are effective as stimuli in the hypnotic condition. It is remarkable that this state of exalted sensibility should be accompanied by what appears to be a lowered, or even a dormant, state of consciousness. It is also remarkable that this exaltation of sensibility does not appear to take place with what may be called a proportional reference to all kinds of stimuli. Indeed, far from there being any such proportional reference, the greatly exalted state of sen- sibility toward slight stimuli is accompanied by a greatly diminished state of excitability toward strong stimuli. Thus, deeply hypnotized persons will allow themselves to be cut, or burned, or to have pins stuck into their flesh, without showing the smallest signs of discom- fort. Heidenhain is careful to point out the interesting similarity, if not identity, between this condition and that which sometimes occurs in certain pathological derangements of the central nervous system, as well as in a certain stage of anaesthesia, wherein the patient is able to feel the contact of the surgical instruments, while quite insensible to any pain produced by the cutting of his flesh. Reflex sensibility, or sensibility conducing to reflex movements, also undergoes a change, and it does so in the direction of increase, as might be expected from no THE POPULAR SCIENCE MONTHLY, the consideration that with the temporary abolition of consciousness the inhibitory influence, which we know the higher nerve-centers to be capable of exerting upon the lower, is presumably suspended. But quite unanticipated is the remarkable fact that the state of exalted reflex excitability may persist for several days — perhaps for a week — after a man has been aroused from a state of profound hypnotism. Thus, Dr. Krener, after having been hypnotized by Professor Heidenhain, and while asleep made to bend his arm twice, for several days after- ward was unable again to straighten it, on account of the flexor mus- cles continuing in a state of tonic contraction, or cramp. In these experiments Heidenhain found that a very gentle stimulation of the skin caused only the muscles lying immediately below the seat of stimu- lation to contract, and that on progressively increasing the strength of the stimulus its effect progressively spread to muscles and to muscle- groups farther and farther removed from the seat of stimulation. It is interesting that this progressive spread of stimulation follows al- most exactly Professor Pfluger's law of irradiation. But the rate at which a reflex excitation is propagated through the central - nerve organs is very slow, as compared with the rapidity with which such propagation takes place in ordinary circumstances. Moreover, the muscles are prone to go into tonic contraction, rather than to respond to a stimulus in the ordinary way. The whole hypnotic condition thus so strongly resembles that of catalepsy that Heidenhain regards the former as nothing other than the latter artificially induced. In the case of strong persons this tonic contraction of the muscles may make the body as stiff as a board, so that, if a man is supported in an horizon- tal position by his head and his feet only, one may stand upon his stomach without causing the body to yield. The rate of breathing has been seen by Heidenhain to be increased fourfold, and the pulse also to be accelerated, though not in so considerable a degree. In a chapter on the conditions which induce the state of hypnotism, Heidenhain begins by dismissing all ideas of any special " force " as required to produce or to explain any of the phenomena which he has witnessed. He does not doubt that some persons are more susceptible than others to the influences which induce the hypnotic state, and he if^hinks that this susceptibility is greatest in persons of high nervous sensibility. These " influences " may be of various kinds ; such as looking •continuously at a small bright object, listening continuously to a monotovious sound, submitting to be gently and continuously stroked upon the si^in, etc. — the common peculiarity of all the influences which may induce ^i^g hypnotic state being that they are sensory stimuli of a gentle, continuous, and monotonous kind. Awakening may be pro- duced by suOf-iguiy blowing upon the face, slapping the hand, scream- ing in the ear, etc., and even by the change of stimulus proceeding from the retma -^hich is caused by a person other than the operator suddenly taking i^ig pi^ce before the patient. On the whole, the hyp- HYPNOTISM. Ill notic condition may be induced in susceptible persons by a feeble, continued, and regular stimulation of the nerves of touch, sight, or hearing ; and may be terminated by a strong or sudden change in the stimulation of these same nerves. The physiological explanation of the hypnotic state which Heiden- hain ventures to suggest is, that a stimulus of the kind just mentioned has the effect of inhibiting the functions of the cerebral hemispheres, in a manner analogous to that which is known to occur in several other cases which he quotes of ganglionic action being inhibited by certain kinds of stimuli operating upon their sensory nerves. In a more recent paper, embodying the results of a further investi- gation in which he was joined by P. Grutzner, Heidenhain gives us the following supplementary information : The muscles which are earliest affected are those of the eyelids ; the patient is unable to open his closed eyes by any effort of his will. Next, the affection extends in a similar manner to the muscles of the jaw, then to the arms, trunk, and legs. But even when so many of the muscles of the body have passed beyond the control of the will, consciousness may remain intact. In other cases, however, the hyp- notic sleep comes on earlier. Imitative movements become more and more certain the more they are practiced, so that at last they may be invariable and wonderfully precise, extending to the least striking or conspicuous of the changes of attitude and general movements of the operator. Professor Berger observed that, when pressure is exerted with the hand at the nape of the neck upon the spinous process of the seventh cervical vertebra, the patient will begin to imitate spoken words. It is immaterial whether or not the words make sense, or whether they belong to a known or to an unknown language. The tone in which the imitation is made varies greatly in different individuals, but for the same individual is always constant. In one case it was a hollow tone, " like a voice from the grave " ; in another almost a whisper, and so on. In all cases, how- ever, the tone is continued in one kind, i. e., it is monotonous. Further experiments showed that pressure on the nape of the neck was not the only means whereby imitative speaking could be induced, but that the latter would follow with equal certainty and precision if the experi- menter spoke against the nape of the neck — especially if he directed his words upon it by means of a sound-funnel. A similar result fol- lowed if the words were directed against the pit of the stomach. It followed with less certainty when the words were directed against the larynx or into the open mouth, and the patient remained quite dumb when the words were directed into his ear, or upon any other part of his head. If a tuning-fork were substituted for the voice, the note of the fork would be imitated by the patient when the end of the fork was placed on any of the situations just mentioned as sensitive. By exploring the pit of the stomach with a tuning-fork, the sensitive area 112 THI] POPULAR SCIENCE MONTHLY. was found to begin about an inch below the breastbone, and from thence to extend for about two inches downward and about the same distance right and left from the middle line, while the navel, breast- bone, ribs, etc., were quite insensitive. Heidenhain seeks — though not, we think, very successfully — to explain this curious distribution of areas sensitive to sound, by considerations as to the distribution of the vagus nerve. Next we have a chapter on the subjection of the intellectual fac- ulties to the will of the operator which is manifested by j^ersons when in a state of hypnotism. For the manifestation of these phenomena the sleep must be less profound than that which is required for jjro- ducing imitative movements ; in this stage of hypnotism the experi- m.enter has not only the motor mechanism on which to operate, but likewise the imagination. "Artificial hallucinations" may be pro- duced to any extent by rehearsing to the patient the scenes or events which it may be desired to make him imagine. A number of interest- ing details of particular cases are given, but we have only space to re- peat one of the most curious. A medical student, when hypnotized in the morning, had a long and consecutive dream, in which he imagined that he had gone to ' the Zoological Gardens, that a lion had broken loose, that he was greatly terrified, etc. On the evening of the same day he was again hypnotized, and again had exactly the same dream. Lastly, at night, while sleejiing normally, the dream was a third time repeated. A number of experiments proved that stimulation of certain parts of the skin of hypnotized persons is followed by certain reflex move- ments. For instance, when the skin of the neck between the fourth and seventh cervical vertebrae is gently stroked with the finger, the patient emits a peculiar sighing sound. The similarity of these reflex movements to those which occur in the well-known " croak-experiment " of Goltz is pointed out. A number of other experiments proved that unilateral hypnotism might be induced by gently and repeatedly stroking one side or other of the head and forehead. The resulting hypnotism manifested itself on the side opposite to that which was stroked, and affected both the face and limbs. When the left side of the head was stroked, there further resulted all the phenomena of aphasia, which was not the case when the right side of the head was stroked. When both sides of the head were stroked, all the limbs were rendered cataleptic, but aphasia did not result. On placing the arms in Mosso's apparatus for measur- ing the volume of blood, it was found that, when one arm was hypno- tized by the unilateral method, its volume of blood v»^as much dimin- ished, while that of the other arm was increased, and that the balance was restored as soon as the cataleptic condition passed off. In these experiments consciousness remained unaffected, and there Avere no dis- agreeable sensations experienced by the patient. In some instances. I HYPNOTISM. 113 however, the above results were equivocal, catalepsy occurring on the same side as the stroking, or sometimes on one side and sometimes on the other. In all cases of unilateral hypnotism, the side affected as to motion is also affected as to sensation. Sense of temperature under these circumstances remains intact long after sense of touch has been abolished. As regards special sensation, the eye on the hypnotized side is affected both as to its mechanism of accommodation and its sense of color. While color-blind to "objective colors," the hypno- tized eye will see " subjective colors " when it is gently pressed and the pressure suddenly removed. Moreover, if a dose of atropine be ad- ministered to it, and if it be then from time to time hypnotized while the drug is gradually developing its influence, the color-sense will be found to be undergoing a gradual change. In the first stage yellow appears gray with a bluish tinge, in the second stage pure blue, in the third blue with a yellowish tinge, and in the fourth yellow with a light- bluish tinge. The research concludes with some experiments which show that in partly hypnotized persons imitative movements take place involuntarily, and persist until interrupted by a direct effort of the will. From this fact Heidenhain infers that the imitative move- ments which occur in the more profound stages of hypnotism are jDurely automatic, or involuntary. In concluding this brief sketch of Heidenhain's interesting results, it is desirable to add that in most of them he has been anticipated by the experiments of Braid. Braid's book is now out of print, and, as it is not once alluded to by Heidenhain, we must fairly suppose that he has not read it. But we should be doing scant justice to this book if we said merely that it anticipated nearly all the observations above mentioned. It has done much more than this. In the vast number of careful experiments which it records — all undertaken and prose- cuted in a manner strictly scientific — it carried the inquiry into vari- ous provinces which have not been entered by Heidenhain. Many of the facts which that inquiry yielded appear, a priori, to be almost in- credible ; but, as their painstaking investigator has had every one of his results confirmed by Heidenhain so far as the latter physiologist has prosecuted his researches, it is but fair to conclude that the hither- to unconfirmed observations deserve to be repeated. No one can read Braid's work without being impressed by the care and candor with which, amid violent opposition from all quarters, his investigations were pursued ; and now, when, after a lapse of nearly forty years, his results are beginning to receive the confirmation which they de- serve, the physiologists who yield it ought not to forget the credit that is due to the earliest, the most laborious, and the hitherto most exten- sive investigator of the phenomena of what he called hypnotism. — Nineteenth Century. VOL. XVIII. — 8 114 THE POPULAR SCIENCE MONTHLY. SKETCH OF LEWIS II. MOKGAN, PRESIDENT OF THE AMERICAN ASSOCIATION FOB THE ADVANCEMENT OF SCIENCE. By J. "VV. POWELL. LEWIS HENRY MORGAN was born near the village of Aurora, New York, November 21, 1818. The subject of this sketch is eight generations in lineal descent on his father's side from James Morgan, who settled in Roxbury, Massachusetts, in 1646 ; and on his mother's side from John Steele, who settled in Newton, now Cam- bridge, in 1641 ; beginning with these, seven generations of his ances- tors have lived and died in New England. In 1840, at the age of twenty-one, young Morgan graduated at Union College, and was engaged in the study of law until 1844. Dur- ing this time he occasionally wrote articles for the " Knickerbocker " and other periodicals. On his return to Aurora from college he was induced to join a secret society composed of young men of that place. This trivial circumstance had a great influence on his future career. The society was organized for no definite purpose, and failed to inter- est young Morgan, who at once looked about for some method of ex- panding the society and extending its influence ; and finally, under his management, a new society was organized and styled "The Grand Order of the Iroquois." The plan was to model it somewhat after the pattern of Indian tribes, and to extend the organization over all the territory occupied by the Iroquois, and to have a group of branch societies for each area occupied by an Iroquois tribe, or nation, as they were then called, and these larger divisions divided into chapters as Indian nations were divided into gentes — so-called tribes. In order that this new organization might be i^rojierly formed on the plan of the ancient Iroquois confederacy, young Morgan went among the Indians of New York for the purpose of studying their social organization and government. In this he soon became deeply interested, as did many of the originators of " The Grand Order of the Iroquois." A number of the gentlemen who took part in the organization of the society have since risen to important posi- tions in American society, as a mention of the following names will demonstrate: Rev. Isaac N. Hurd ; Henry Haight, afterward Gov- ernor of California ; the late General Albert J. Myer, Chief of the Sig- nal Service ; Hon, George Barker, Justice of the Supreme Court of New York ; the late Judge Charles P. Avery, of Oswego ; the late Hon. Charles Billinghurst, member of Congress from Wisconsin ; Rev. An- son J. Upton, President of the Auburn Theological Seminary ; Charles T. Porter, of Philadelphia ; Hon. Theodore Pomeroy, of Auburn ; William Allen, of Auburn ; C. White, of Aurora ; the late Frederick De Lano, of Rochester ; the late Alexander Mann, of Rochester ; Hon. SKETCH OF LEWIS H. MORGAN. 115 Stephen Goodwin, of Chicago ; Rev. James S. Bush, of Staten Island ; and George S. Riley, of Rochester. The society seems to have greatly flourished for a time, and to have been very pojDular throughout that poi'tion of New York Avest of the Hudson River. Its ceremonies were picturesque and attractive. The meetings of the society were called councils, and were held in the woods. The Grand Council w^as held in a forest near Aurora by night, and the forest aisles were illuminated by huge camp-fires, and the sachems and chiefs who there assembled came in Indian panoply, with chaplets of eagle-feathers, Indian tunics, scarlet leggins, and decorated moccasins. It was wild sport, in which the young men engaged in merry mood. Morgan and his young associates soon became absorbed in active business, and found that the society they had organized could not be operated without consuming too great a portion of their time, and it died by premeditated neglect. But the discoveries made by Morgan were of such importance and interest that he continued his investiga- tions from time to time, and, in order to obtain a deeper insight into the home life and customs of the Indians, and their social and govern- mental organization, he spent much time among them and was adopted into a gens of the Senecas. In 1847 he published in the "American Review" a series of " Let- ters on the Iroquois," over the signature of " Skenandoah." In the mean time he was building up a legal practice, and found that he must neglect it or abandon his studies of Indian life and govern- ment ; and so he determined to publish the materials on hand, and then devote himself exclusively to the practice of his profession. This resiilted in the publication in 1851 of "The League of the Iro- quois," in which the social organization and government of this won- derful confederacy were carefully and thoroughly exj^lained. The volume also contains interesting accounts of the daily life, customs, and superstitions of these Indians, and was the first scientific account of an Indian tribe ever given to the world. The work is not entirely free from the nomenclature of sociology previously, and to some extent since, used by writers on our North American Indians, in which tribes are described as nations, and the institutions of tribal or barbaric life defined in terms used in national or civilized life. But the series of oro-anic units was discovered among the Iroquois and was correctly defined, though the confederacy was called a league, the tribe a nation, and the gens a tribe. In like manner, kinship as the bond of union was fully recognized. In 1856 Morgan attended the Albany meeting of the American Association for the Advancement of Science, and read a paper called " The Laws of Descent of the Iroquois." The reading of the paper awakened great interest in the subject, and a number of the leading members of the Association ursred Mi-. Morsxan to continue his studies ii6 THE POPULAR SCIENCE MONTHLY. in this field. Professors Henry and Agassiz were especially urgent in the matter, and Morgan decided to return to his old studies, but rather as an amateur and in such a manner as not to interfere with his pro- fession. In 1858 he was at Marquette, where he found an encampment of Ojibwa Indians, and, going into a tent, sat down with an Indian, and gradually in conversation drew from him an account of the Ojibwa system of kinship, the list of gentes, and the gentile organization of the tribe, and found them essentially the same as the Iroquois. To him this was a great surprise, for up to this time he had sup- posed that the Iroquois Confederacy had a system peculiar to itself and was an anomaly among governments. But here he found society and government organized upon the same plan, and yet the linguistic terms were totally different. He had thus discovered the essential characteristic of tribal government in two distinct stocks of our North American Indians, and it occurred to him that the system might extend further, so he determined to pursue his investigations among other Indians. On his return to Rochester he took up " Riggs's Dakota Grammar and Dictionary," then lately published by the Smithsonian Institution, and found in the kinship terms as therein defined evidences of the same kinship system. He then more carefully examined the English and Roman systems, especially as they are set forth by Blackstone and in the Pandects of Justinian. Finally, he prepared schedules of in- quiry to be circulated among missionaries, teachers, traders, and other persons familiar with Indian life. At this stage Professor Henry became deeply interested in the investigations and published the schedules for Mr. Morgan, which were widely distributed in America and throughout the world by the Smithsonian Institution and by the active cooperation of General Cass, who was then Secretary of State. During the earlier years Mr. Morgan was greatly disappointed with the returns from the circulation of these schedules. The subject was new and strange, and the persons to whom they were sent were slow in comprehending the nature and value of the researches suggested ; and so he determined to pursue his investigations in person, and for this purpose in 1859 he made an expedition through Kansas and Nebraska. In 1860 he went over the same ground, revising his former work, increasing his observations, and extended his journey far up the Missouri River. In 1861 he made a trip to the Hudson Bay Terri- tory and Lake Winnipeg, and in 1863 to Fort Benton and the Rocky Mountains. In his travels he everywhere sought the Indian tribes, and through the aid of interpreters — white men and Indians — filled out his own schedules and extended his studies into the social life and government of the Indians and other collateral branches of anthropology. SKETCH OF LEWIS H. MORGAN. 117 Finally, returns from his schedules of inquiry began to pour in from all quarters of the globe, and gradually a vast correspondence grew up, until the kinship systems of more than four fifths of the world were recorded either directly by himself or by others whom he had enlisted in the work. The materials thus collected were gradually by years of labor thoroughly systematized, and finally published by the Smith- sonian Institution as one of its " Contributions to Knowledge," entitled " Systems of Consanguinity and Affinity of the Human Family." It is a quarto volume of about six hundred pages, the result of many years of patient and well-directed labor, and it constitutes a model of inductive research. The kinship systems of eighty tribes of North America, together with those of a great number of the principal na- tions and ti'ibes of the Old World and the islands of the sea, are fully and elaborately recorded in its tables. This publication marks a most important epoch in anthropologic research. Prior to its appearance, the social and governmental insti- tutions of mankind antecedent to the evolution of civilization were to a large extent unknown. Travelers and various persons more or less familiar with tribal life had put on record many curious facts, and the comj^ilation of these facts by scholars had resulted in the accumulation of incoherent and inconsistent materials about which more or less crude and fanciful speculations were made ; but the essential characteristics of tribal society, as based upon kinship in barbarism and upon com- munal marriage in savagery, were unknown. This first volume was essentially a volume of facts, and only a brief and i-ather unsatisfactory discussion of the facts was undertaken. Mr. Morgan's final conclusion and philosophic treatment of the subject were reserved for a subsequent volume. During the earlier years of Morgan's work upon the " Systems of Consanguinity and Affinity," he carried on an extensive law business, and was engaged in a railroad enterprise upon the Michigan Peninsula. The latter necessitated frequent visits to what was then a forest wilder- ness on the shores of Lake Superior, and here he became interested in the study of the beaver, which resulted in the piiblication, in 1868, of a volume entitled "The American Beaver and his Works." In his preface to this volume Mr. Morgan thus describes the circumstances imder which these studies were made : Having been associated in this enterprise from its commencement, as one of the directors of the railroad company, and as one of its stockholders, business called me to Marquette first in 1855, and nearly every summer since to the present time. After the completion of the railroad to the iron-mines, it was impossible to withstand the temptation to brook-trout fishing, which the streams traversing the intermediate and adjacent districts offered in ample measure. My friend Gilbert D. Johnson, Superintendent of the Lake Superior Mine, had established boat-stations at convenient points upon the Carp and Esconauba Rivers, and to him I am specially indebted, first, for a memorable experience in brook-trout fishing, and, secondly, for an introduction to the works of the beaver 118 THE POPULAR SCIENCE MONTHLY. within tlio areas traversed by these streams. Our course, in passing up and down, was obstructed by beaver-dams at short intervals, from two to three feet high, over which we were compelled to draw our boat. Their numbers and magnitude could not fail to surprise as well as interest any observer. Although constructed in the solitude of the wilderness, where the forces of Nature were still actively at work, it was evident that they had existed and been maintained for centuries by the permanent impression produced upon the rugged features of the country. The results of the persevering labors of the beaver were sug- gestive of human industry. The streams were bordered continuously with beaver meadows, formed by overflows by means of these dams, which had destroyed the timber upon the adjacent lands. Fallen trees, excavated canals, lodges, and burrows, filled up the measure of their works. These together seemed to me to afford a much greater promise of pleasure than could be gained with the fisli- pole, and very soon, accordingly, the beaver was substituted for the trout. I took up the subject, as I did fishing, for summer recreation. In the year 1861 I had occasion to visit the Ked Eiver settlement in the Hudson's Bay Territory, and in 1862 to ascend the Missouri Eiver to the Eocky Mountains, which enabled me to compare the works of the beaver in these localities with those on Lake Superior. At the outset I had no expectation of following up the subject year after year, but was led on by the interest which it awakened, until the materials collected seemed to be worth arranging for publication. "Whether this last sur- mise is well or ill founded, I am at least certain that no other animal will be allowed to entrap the unambitious author so completely as he confesses himself to have been by the beaver. My unrestrained curiosity has cost me a good deal of time and labor. Mors^an's researches amonof the tribes of North America were ex- tended to many subjects not inchided in the great Yolume published by the Smithsonian Institution. The results of these collateral inves- tigations led to the publication of a series of articles in the " North American Review." The first appeared in 1869, and was entitled " The Seven Cities of Cibola," in which he comes to the qualified con- clusion that the ruins on the Chaco in New Mexico represent what re- mains to us of the so-called cities described by the ancient Spanish trav- elers. Incidentally, the paper also contains a careful description of pueblo architecture, and its relation to gentile life, and is compared with the architecture of old Mexico ; and the statement is made that the buildings discovered by the Spaniards in Mexico were in fact pue- blos, or communal dwellings, but were exaggerated by them into pala- tial residences of emperors, with retinues of serving lords and hosts of slaves. The lengthy article closes with the following paragraph : "When the romantic features of the discovery and conquest of Mexico, which made such a powerful impression upon the writers of the sixteenth and seven- teenth centuries, and which have not yet lost their influence, shall become soft- ened down by our increasing knowledge of Indian character, arts, and institu- tions, it will be possible to reconstruct, from existing materials, a rational history of this interesting people. If the author of the volume, whoever he may be, will entitle his work ' A History of the Aztec Confederacy,' and, after explaining the political relations of the three nations of which it was composed, and the func- tions of the council by which it was governed, will then introduce Montezuma SKETCH OF LEWIS H. MORGAN. 119 as the head chief of the Aztecs, one of the three confederated peoples, the reader will be certain to start with a tolerably clear impression. No harm will be done to truth, if the great lords, with many vassals and large landed estates, and the little lords, with few vassals and small landed estates, are introduced as plain In- dian chiefs, innocent of all knowledge both of estates and vassals. Besides this, it is not improbable that the palaces and most of the temples will ultimately resolve themselves iuto plain communal houses, like those now standing in the picturesque and beautiful valley of the Chaco, roofless and deserted. With these, and a number of similar changes, the future student of aboriginal history will not be led to deceptive conclusions by the glitter of inappropriate terms. Such a history is due to the memory of the Aztecs, and to a right estimate of the Indian family. This article inaugurated the reconstruction of the history of Mexi- can and Central American culture, vi^hich is now rapidly in progress. All the previous history had a been a vain but brilliant exaggeration of Indian society, with its languages, arts, religion, and social and governmental institutions — a picture derived from boastful and men- dacious travelers. In the latter part of 1869 a second article appeared in the same journal on Indian migrations, followed by a third on the same sub- ject in 1870. The purpose of these articles was to indicate an original general dispersion of the Indian tribes from the region of the Colum- bia River. In 1876 a fourth article appeared, entitled "Montezuma's Dinner," which was in part a review of Bancroft's " Native Races of the Pacific States," but in fact was a general characterization of the culture dis- covered in Mexico and Central America, with a review of the historic evidence, and was an exquisite satire on the exaggerated accounts of Spanish travelers and priests, expanded and glorified by modern writers. In the same year a fifth article appeared, on the " Houses of the Mound-Builders." The great work of Mr. Morgan was yet unpublished. It remained for him to gather the materials he had collected on tribal society into one philosophic treatise. This was accomplished in the publication of his volume entitled "Ancient Society" in 1877. This was divided into four parts, as follows : Part I. Growth of Intelligence through Inventions and Discoveries ; Part II. Growth of the Idea of Govern- ment ; Part III. Growth of the Idea of the Family ; Part IV. Growth of- the Idea of Property. In the first part technologic evolution was discussed, and culture periods, or what Mr. Morgan denotes " ethnical periods," were defined. These grand periods, through which the most highly developed races of mankind have passed, and into which the various peoples on the globe may be distributed, were set forth as the savage, the barbaric, and the civilized. These were defined in terms relating: to the evolu- tion of arts. Savagery and barbarism were divided into three periods 120 THE POPULAR SCIENCE MONTHLY. each, giving the lower, middle, and upper status of savagery, and the lower, middle, and upper status of barbarism ; these subdivisions also being established on the development of specified arts. Two grand plans of government are also set forth — tribal and na- tional ; tribal government being personal, i. e,, taking into account persons only, and national government being territorial and based on property. In the second part he discussed in a thorough manner the different forms of government in the order of their evolution, beginning with the organization of society upon the basis of sex, as it is found in Australia, and fragments of which are found as survivals among other tribes of the world. He then expounded the organization of society and tribal governments based upon kinship ; and having by wide research discovered this system in every quarter of the globe among people living in barbaric life, and having discovered by abundant evi- dence that the same form of society and government existed in the early history of the most civilized peoples, he logically inferred that gentile society and tribal government as based upon kinship are the universal characteristic of man in his passage through the period of barbarism. He also discussed the evolution of gentile society from connubial society ; defined the organic units of tribal government as gentes, phratries, tribes, and confederacies, pointing out their origin and growth as illustrated by abundant examples throughout the globe ; and, finally, the evolution of gentile society and tribal government into property society and national government. In Part III he treats of the evolution of the family — discovers five successive forms, and sets forth the processes by which the first or consanguineal family, which is founded upon the intermarriage of brothers and sisters, own and collateral in a group, was developed into the last or monogamian, which is founded upon mai-riage by single pairs with exclusive cohabitation. In the final chapter of this part he gives the sequence of institutions connected with the family in tabular form with appended explanations. In the fourth part Mr. Morgan deals with the origin of civilization. Discovery and invention finally led to the accumulation of property, and society was organized on this basis ; and for the protection of property and the industries by which it is produced civilized govern- ments have finally been established over territorial areas. The growth of the idea of property with the development of industries is explained, together with the evolution of laws of inheritance. Thus the plan of Mr. Morgan's great work w^as completed. In it was laid the foundation for the science of government as it is finally to be erected by the philosophy of evolution. In the progress of human culture institutions are developed ; new rights with their correlative duties arise from the new relations into which men are placed. For the maintenance of these rights and the SKETCH OF LEWIS H. MORGAN. 121 enforcement of these duties, governments change in all their substan- tial characteristics, and the great laws of evolution in the processes of differentiation and integration are followed, as tribes integrate into nations and the functions of government are differentiated ; commu- nal industries change to individual and corporate industries ; commu- nal property to individual and corporate property ; communal marriage to individual marriage ; communal government to organized national government, with the differentiation of the three great departments, the executive, the legislative, and the judicial ; and these again elabo- rately differentiated with special organic members for special organic functions — all progressing with advancing intelligence to secure jus- tice and thereby increase happiness. This survey of governments in their totality presents one fact of profound interest to statesmen. Government by the people is the nor- mal condition of mankind, as a broad review of human history abun- dantly maintains. Monarchies are temporary phases of government in the evolution of mankind from barbarism to civilization ; and these monarchies with their attendant hierarchies, feudalisms, and sla- very, appear only as pathologic conditions of the body politic — diseases which must be destroyed or they will destroy — and hence disappearing by virtue of the survival of the fittest. Hope for the future of society is the best-beloved daughter of Evolution. Morgan has here been spoken of as a pioneer in a special field of research, but many others worked contemporaneously with him in the same field. Notable among these are Tylor and Maine, whose fields of investigation were, to some extent, identical with Morgan's ; though in a larger sense, the areas which they covered were diverse. Where their studies were in common their methods of research were diverse. Maine and Tylor ransacked recorded history. Morgan plunged into the wilderness and studied Indian tribes, but his plan also included the study of annals ; yet his work is largely made up of a record of facts previously unknown to science. Long years of excessive labor, with sorrows that invade the domes- tic circle through disease and death, have somewhat decreased the vigor of physical life not long ago so characteristic of the man. On account of his infirmities he presided with some difiiculty at the last meeting of the American Association for the Advancement of Science ; but his mental vigor continues, and he is now engaged in the preparation of a volume on the " House Life and Architecture of the North Amer- ican Indians," to be published by the Bureau of Ethnology of the Smithsonian Institution. May his years continue and his works multiply ! It is not one of the least of the results accomplished by Mr. Morgan that he has gath- ered about him loving disciples who are reaping harvests from fields planted by himself. 122 THE POPULAR SCIENCE MONTHLY CORRESPOI^DENCE. SCIENCE AT PEINCETON COLLEGE. Messrs. Editors. ri"^HERE are statements in the " Corre- .1_ spondence " of the last number of '' The Popuhir Science Monthly " fitted to leave an unjust impression as to what is taught in Princeton College. I do not enter upon the argument of that article, which is palpably illogical. It is that we have had low fever, taking a tvphoid shape, because we do not teach physiology to our students. Two scientific adepts have reported as to our sanitary state, and what they have testified is likely to be accepted by the public. Nor do I look on this as the fitting opportunity to enter on the discussion as to what branch- es should be taught in colleges which im- part a high and refining education, and con- fer the Bachelor's, the Master's, and the Doc- tor's degrees. My opinions on this subject have often been given to the world. I be- lieve that, in our higher educational institu- tions, there should be a due combination of literature (including languages), of science, and philosophy. We have endeavored to unite these, and give a proper place to each in our curriculum. It is only thus that we can fulfill the grand end of education, that of developing the man and the full man. I do not regard a youth as fully trained who knows merely Latin and Greek ; but as lit- tle do I look upon him as educated if he knows only his own bodily frame and ma- larial disease. Nor am I ashamed to add that religion has an important part to act in a college, if we would impart the proper spirit to our young men. The favorites of " The Popular Science Monthly," Professor Huxley and Herbert Spencer, have avowed that there is no adequacy in physical sci- ence to make youths moral ; and the former wishes the Bible taught in the public schools of London, and the latter seems to be trust- ing to a development which will make peo- ple moral in a million of years, if in the mean time the world is not burnt up by the conflagration which he says must come. But my special object in this communica- tion is to correct certain statements and in- sinuations as to our teaching. The impres- sion is left by the article that we give ex- clusive, or, at least, our chief attention, to classics and certain old branches, and that we neglect the study of our own bodily frame and of tlie laws of health. After this dec- laration, your readers may be surprised to learn that of our thirty instructors thirteen are employed in teaching the various sci- ences, including the very latest. As to the special branches which we are said not to teach, the Professor of General Chemistry reports : " All students of the college have a full course of instruction in the outlines of human anatomy and physiology, with so much of hygiene as there is time for ; and this has been done in the college for nearly half a century. We do not profess to be a medical college, or to train physicians, but no student leaves us without a fair knowl- edge of his own bodily system." The Profes- sor of Analytical Chemistry reports : " The question of sewage, from a chemical point of view, is fully investigated by all the stu- dents of the scientific course and by those of the academic course who elect applied chemistry. Its injurious effects on the at- mosphere and on the water are described and the laws of the diffusion of all gases are applied at this present time, and have always been, to this question." The Profes- sor of Natural History writes : " The students in science go through a course of physiol- ogy, using ' Huxley' s Elements ' as a text- book, along with ^Youmans's Chapters on Hijgienc,^ to which special attention is giv- en. The subjects which are said to be neg- lected are all taught with some degree of fullness." I have an idea that some of the readers of " The Popular Science Monthly " will be gratified to notice that Professor Youmans is allowed to teach hygiene to our young men ; but they will also discover that this fact undermines his argument, which is that, where hygiene is taught, there should be no fever. James McCosh. Pkinceton College, August 14, ISSO. THE SENSE OF DIRECTION IN ANIMALS. Messrs. Editors. I WAS very much interested in the ac- count, published in your July number, of the experiments with the intelligent Cin- cinnati dog, and I think the facts there developed tend strongly to the proof of a theory that I have long believed to be cor- rect, viz., that some of the lower animals are endowed with a sense of location and direction which at most is only rudimen- tarily possessed by man. I do not think that the feats of the carrier-pigeon can be accounted for on the theory of any finite CORRESP ONDENCE. 123 development of the sense of sight, smell, or hearing, and the action of honey-bees pre- sents the same difficulties to persons familiar with the habits of these interesting insects. In searching for wild honey, the bee-hunter provides himself with a small box w^ith a sliding door ; inside of this box he puts some siveet substance as a bait for the bees. When several bees have collected iu the box, he closes the lid. As soon as they have finished eating, he releases a bee, which, after ascending high enough to clear the surrounding trees, makes a " bee-line " for its hive. The hunter marks this direction and carries his box off at right angles to the line made by the first bee, and releases another bee ; he carefully marks the direc- tion taken by this second bee, and, if they are both from the same swarm, the hive will be found at the point where these two lines meet. I might cite well-authenticated cases of cats, pigs, and dogs, finding their way home, where such a feat would seem impossible to man under like circumstances ; my object, however, was not to theorize, but simply to record what I consider some interesting ob- servations bearing upon this subject. Last spring I built a trout-pond in my garden, on the west side of a running brook discharging about six hundred cubic feet of water per minute. The brook is quite rapid where it passes the pond, and the surface of the pond is some five feet higher than the surface of the brook. The pond is sup- plied with water brought 2,000 feet in un- derground pipes and discharged in a foun- tain in the center of the pond. Common bull-frogs {Rami pipiens) occasionally find their way into this pond. On the 18tli of last July I found three frogs in the pond, and shot all of them with a pistol. I dipped them up with a seoop-net, and found two of them shot through the body, and the other, a little fellow, weighing about two ounces, was shot across the back, the bullet just raising the skin and leaving a white streak across its dark-green surface. I emptied the three frogs out of the net into the swift- running water of the brook, and they float- ed down stream out of sight. On the 19th of July, the day following, I found the wounded frog in the pond again, and readily recognized it by the scar from the bullet. I found no difficulty in catching it in the scoop-net, and, fearing that the scar might disappear from its back, I cut off the cen- ter toe of its right foot, put the frog into a paper bag, carried it down the brook across a bridge, and finally threw it into the stream some one hundred yards below the pond. On the 2ith of July I found the frog back again, caught it, and, so as to leave no doubt about its identification, I cut off the middle toe of the left foot. I then put the frog in the paper bag, started from the pond in a northeast course, stopped and whirled the bag around so as to confuse any ideas that it might have had of direction, and then changed my course, and finally re- leased the frog on the opposite side of the brook in an oat-field about an eighth of a mile in an easterly direction from the pond. To prevent the frog from getting any idea from watching me, I passed on after re- leasing it, and did not go back again to the pond for several hours. Three days after- ward I saw the frog in the pond again, but it was so wild that I could not catch it with my scoop-net, and I afterward tried various devices to capture it alive, but the moment it saw me approach the pond it would jump in and remain hidden in the stones at the bottom until I left. Finally, despairing of catching it alive, and having some doubts about its identity, on the 9th of August I shot it, and recognized it by the absence of the cut-p£E toes. The general direction is up-hill from the point where the frog was last released to the pond, and about the same distance in a down-hill course would have taken the frog to the Ausable River. It still remains possible that the frog waited until night, and then followed my tracks back to the pond, but that seems improbable, I think, even more so than to believe that the frog knew all the time the direction of the pond, and slowly worked its way back again as in- clination prompted. George Chahoox. AusABLS Forks, New York, August 16, 1S30. SCIENCE AT THE UNIVERSITY OF MICHIGAN. Messrs. Editors. My eye has just fallen on your editorial comments under the head of " Sewage in College Education " ; and I can not resist the impulse to point out a few of the errors into which you have been drawn. Not much space will be required, I think, to show that the attitude of the University of Michigan toward scientific and classical studies has been quite misapprehended. In the first place, you are in error in assuming that Bishop Harris spoke as the representative of the University. Would it have been fair to assume that Yale College was represented by President White's fa- mous address on the " Warfare of Science " ? Each of these gentlemen was invited to de- liver a commencement address, each chose his own subject, each treated his subject in his own way, and each was alone responsi- ble for what he said. One sentence in the Bishop's address may have misled you. I refer to that in which he expressed his grati- tude that classical studies still maintain their 124 THE POPULAR SCIENCE MONTHLY. prominence in this university. But it is certain that the Bishop either meant simply to express his satisfaction that so large a numl)er of students still continue to pursue classical studies, notwithstanding the induce- ments held out by the scientific courses, or, Avhat is perhaps quite as likely, he himself was not fully aware of what the University is doing for the encouragement of scientific pursuits. In one instance, at least, the Bish- op ran squarely athwart all the traditions and usages of the University. The orator in- dicated certain studies which he would not permit the student to pursue. The Univer- sity, on the contrary, has long held up as its ideal: "All learning and that of the best" ; and entire freedom of choice on the part of students as to what they would pur- sue. You remark : " This great institution, with its fourteen hundred students, seems just as much enslaved by vicious traditions as the older schools. Middle-Age studies are still in the ascendant. The sciences are taught there, but the classical course is the one encouraged by the whole weight of the University influence." I think a few facts will be enough to show you that this assertion is totally and comprehensively incorrect. 1. As many as twent3--eight years ago the University of MicMyan was the pioneer in the work of 'raising scientific studies to a footing of absolute equality with the old classical curriculum. At that moment there was not a single college or university in the country that had a scientific course of four years. Such a four years' course was then established here ; it has ever since been main- tained, and the requisites for admission to it have been raised as rapidly as the condi- tion of the preparatory schools would per- mit. 2. TJie worli, thus early Icgun, has gone steadily on to the present day. Besides the various professional degrees in engineering, the University now confers four degrees as the reward of four years of successful study, viz. : Bachelor of Arts, Bachelor of Science, Bachelor of Philosophy, and Bachelor of Letters. The ancient languages are required for the first of these degrees only ; and even for A. B. the amount of Latin and Greek required aggregates only aboit one solid year's work, while the amount of science rc(iuired aggregates scarcely less, and the amount of science the student may elect in addition aggregates the work of two full years. Thus, even in the classical course, the student with his one year of classics may, if he choose, take two and a half years of science. 3. The number of courses of instruction in Latin and Greek offered to students the present semester is twelve (12), while the number of courses offered in the sciences is forty-four (44). The number of teachers employed to give instruction in Latin and Greek fifteen years ago was four ; last year the number was four ; fifteen years ago the number of teachers in the sciences was five, last year the number was twenty-four. 4. The means of illustration in the clas- sical courses have remained almost station- ary ; while the appliances for the pursuit of scientific studies have spread out in every direction. The physical laboratory affords constant occupation to a considerable num- ber of original investigators. The botani- cal laboratory is daily occupied by a crowd of students pursuing advanced microscopi- cal researches. The physiological labora- tory is positively overrun with students from the beginning to the end of the year. The chemical laboratory last year offered to our students a hundred and seventy-five tables for personal experimentation in applied chemistry, but the number was so inade- quate to a supply of the demand that the building at the present moment is in process of enlargement by nearly as many tables more. It' you were to wander through these busy rooms, and see the hundreds of students clad in their scientific aprons and carrying on their researches with scalpel and micro- scope and test-tubes you would not fail to reform your opinion that the " whole weight of the University influence " is devoted to the encouragement of the classical course. Other universities have reared grander dor- mitories and memorial halls ; but, if any other institution in the country has done more for the direct encouragement of scien- tific study and research within the past fif- teen years than the University of Michigan, I have yet to learn which one it is. If you will point us to a better record than that indicated in the above facts, we will then endeavor to emulate our superior. As your facts were at fault, of course it is not necessary to point out the error of your conclusion. I trust that the facts given are sufficient to justify you in modi- fying your intimation that the institution " deserves to be suppressed as a public nui- sance." I ought perhaps to correct one or two further errors of your article. But I con- tent myself with saying that the University has not been " maintained from the first by public taxes "; that it was not until after it • had already acquired strength, and renown even, that the first dollar of taxes was levied in its behalf ; nay, that the first taxes were not levied for it until long after a funda- mental law had been passed prohibiting the requiring of Latin and Greek as a condition for admission to the full privileges of the University. You conclude your paper by comparing the University of Michigan with Cornell, and pointing to the difference, as evinced in the EDITOR'S TABLE. 125 contrast between Bishop Harris's address and the thesis of a Cornell student on the sanitary condition of Ithaca. I conclude mine by saying that, if you will favor the University of Michigan with a visit, the Li- brarian, I doubt not, will take great plea- sure in showing you a cartload of theses of the very kind you so justly admire. Very respectfully yours, C. K. Adams. University of Michigan, [_ Ann Akbob, Sejjtember 15, 18S0. ) EDITOR'S TABLE. POLITICAL SCIENCE. 'TTTE commence this montli the pub- V V lication of an important series of articles on " The Development of Politi- cal Institutions" from the highest living authority on the subject of tlie science of society. By the science of society is meant such a systematic exposition of the facts and relations of social phe- nomena as shall bring out the natural laws of social change and transforma- tion. The doctrine of evolution com- pels the study of society from a scientific point of view. Based upon the dynami- cal view of nature, the principle of con- tinuity, and the immutable operation of cause and effect, it brings out the natu- ral laws by which the course of society is governed in all its stages of progress and decline. The political element in society is but a part — though an impor- tant part — of a great complex organism, but it has had its laws of growth like all other parts of the organization. But, if such determinable laws of political change exist, it is desirable that they should be traced out and formulated. The discussion, therefore, now entered upon, we need hardly say, is of great theoretical and practical moment, be- cause a knowledge of the principles by which political institutions originated and have grown up and are still ad- vancing must become in future the basis of all intelligent political action. Social science thus elucidated will yet consti- tute the true foundation of the art of politics, or the practical carrying on of governmental operations ; though there is as yet in the public mind but little preparation for this mode of regard- ing social questions. Familiar as we are with the highly developed results of long social unfolding, it is not easy to go back into the dim obscurities of social embryology. This, however, is indispensable if we are to gain any ade- quate understanding of the method of social development. Mr, Spencer has elsewhere dealt very fully with the im- pediments to the study of social evolu- tion, and in the preliminary paper here- with printed he calls attention to some of the difficulties to be met in the political study of evolution. It is always very hard work for the loose and careless thinker to subject himself to the rigor- ous requirements of thorough scientific study ; but the task becomes still more serious when to lax habits of thinking there are added those prejudices and gross errors to whicli men so passion- ately cling in the sphere of political thought. Yet these obstacles will be overcome as people are slowly educated to a better appreciation of the scien- tific spirit and the scientific method. It is desirable to explain that the articles on " The Development of Polit- ical Institutions " that are to appear in the " Monthly " when collected will constitute that portion of Spencer's " Principles of Sociology " which is to be devoted to the evolution of political government. The preceding division on the development of "■ Ceremonial Institutions " is already published ; and the part now appearing on political in- stitutions will be followed by the cor- responding treatment of ecclesiastical and industrial organizations. These to- gether will form the second volume of the " Principles of Sociology," the sev- enth volume of Spencer's philosophical 126 THE POPULAR SCIENCE MONTHLY. system. "We refer to this because there is much misunderstanding of the bear- ings of Spencer's various books on the subject of sociology. Dr. Porter, for example, has lately taken him up in the " Princeton Review," and vre think, if he had been a little more particular in his reference to Spencer's sociological •works, he would have given increased help to readers unacquainted with them. He says: "Spencer's contributions to this science are professedly only intro- ductory to its study. They are to con- sist of ' The Principles of Sociology,' in two volumes, ' Social Statics' and 'The Study of Sociology,' as also several vol- umes of ' Descriptive Sociology.' " More precisely " The Princii^les of Sociology ' will comprise three volumes instead of two. " Social Statics " is an old book, that forms no part of his sociological system, and only " The Study of Sociol- ogy," an incidental contribution to the subject, should be especially character- ized as introductory to it. It is hardly fair to an author to mix up his works in this careless way, and it is especially unfair to Spencer, because he has been long engaged in developing his ideas in various lines of work, and publishing them in fragmentary parts, so that read- ers are easily liable to become confused in regard to them. President Porter's critical essay is entitled " Spencer's The- ory of Sociology," and he says, " The only practicable method of discovering the author's theory is to subject the volume to a minute criticism." We think the still more " practicable " method would be an examination of the works in which the theory is pro- fessedly expounded rather than in a volume which disavows all attempt to formulate the principles of the sci- ence. He has explained in the pref- ace to the work that "The Study of Sociology " was a side discussion, form- ing no part of the systematic treatment of social science. It was written with main reference to those prepossessions of the public mind which tend to hin- der a scientific study of social subjects. Instead of explaining the science of so- ciety, the book was designed to remove objections to its possibility and to arouse interest in its legitimate questions. Yet Dr. Porter undertakes to judge Spen- cer's " Theory of Sociology " by an analysis of this book which does not contain it. Spencer's works are tempt- ing game for sensational criticism, be- cause of their extent, incompleteness, and comprehensive method, which make misconception easy and misrepresenta- tion easier, and for this reason we are called upon to correct false impressions more frequently than would be other- wise necessary. SCIEXCE IN THE COLLEGES. We call attention to the correspond- ence from Princeton and Ann Arbor correcting alleged errors in our Septem- ber article on " Sewage in College Edu- cation." Dr. McCosh thinks it palpably illogical to argue that they have had typhoid fever because they do not teach physiology to the students. Our stric- tures -were based on an assumed state of facts which is not contradicted, viz., that the fatal fever resulted from causes that were clearly preventable. We sim- ply charged that the knowledge that would have averted the catastrophe, and which, as tending to self-preserva- tion, is the most important of all knowl- edge, is culpably neglected in the col- lege, is subordinated to more worthless studies, and not so taught as to yield the beneficent results which it is capa- ble of producing. And what are the facts ? Dr. McCosh says that the chem- ical professor reports as follows: "All students of the college have a full course of instruction in the outlines of human anatomy and physiology, with so much of hygiene as there is time for; and this has been done in the college for nearly half a century." That is, they teach as much about the laws of life as the old crowded classical curriculum EDITOR'S TABLE. 127 will allow " time " for, and hygiene is treated just as it has been these fifty years. We only say, let the knowledge that conduces to self-preservation be taught first and thoroughly, and, if the text-books are inadequate or the teach- ers incompetent, turn them all out to- gether and procure those that are hetter. Professor Adams, we are happy to say, makes an excellent showing of the extent of scientific study in Michigan University. But it seems we were at fault in trusting the statements of Bish- op Harris, who misrepresented some things and was ignorant of others, while the plaudits which he evolved were in- tended rather for his rhetoric than his ideas. Professor Adam.s intimates that it was unfair to assume that the Bishop spoke as the representative of the uni- versity. But when a State Bishop is brought out hefore a State institution on an important occasion, and the cus- tomary exercises are suspended in his behalf, and he takes up the work of the institution as his theme, certainly it would not have been admissible in out- siders to question his representation of facts. Professor Adams gives an inter- esting and most encouraging account of the progress of scientific study in the university, and we all owe thanks to the Bishop for starting a discussion that has brought out these excellent results, and in which his inaccuracies have been overruled for good. But we will try to be more discriminating in future as to whose statements are to be trusted. THE AMERICAN INSTITUTE FAIR. IxorsTEiAL exhibitions now seem to have become a recognized part of the machinery of trade. Those of a merely local character are held in great numbers and at many different points, while those of international range are of such frequent occurrence as to be fast losing their novelty. Most of the considerable cities of this country now liave permanent organizations devoted to the giving of periodic fairs, while States and counties vie with one another in the same sort of work. The holding of fairs is a very old practice in all civil- ized countries ; and it has always been made tributary to social gratification as well as to commercial utility. Such ex- hibitions are primarily a means of giving publicity to the wares of manufacturers and traders, but they are not without a further value to the general public. There must of necessity be a good deal of repetition at the successive collec- tions, but the rapid advances now made in the arts insure the bringing forward of a sutficient number of new and inter- esting objects to give novelty and plea- sure to the recurring displays. Great fairs are, moreover, always instructive. They not only offer favorable opportuni- ties for observing and comparing many articles with which people desire to sup- ply themselves, but, by bringing togeth- er the best products of useful and artis- tic workmanship, they familiarize the public with the highest standards of excellence, and become the centers of impulse, and incite to still further im- provement. International exhibitions have undoubtedly had great effect in stimulating whole communities to apply greater intelligence to the processes of the arts and to attain a higher perfec- tion in industrial products ; and this wholesome education has been also pro- moted, though in a lesser degree, by the large local exhibitions. Among the fairs annually held, those of the American Institute have long had a leading place. The position of the Institute, at the chief distributing point of the country and the center of population, has doubtless contributed largely to give its fairs such a charac- ter; but the judicious conduct of the concerns of the society and the discre- tion with which awards have in the main been bestowed have been no less important factors. The American In- stitute, was the pioneer in the work to which it is devoted — the promotion and 128 THE POPULAR SCIENCE MONTHLY. encouragement of the industrial arts in this country. Founded in 1828, it has for lialf a century had a successful ca- reer. Its growth has been coincident with a most remarkable industrial de- velopment, and its exhibitions during this period have been among the most available means of bringing to the early notice of tlie public the most important and valuable inventions and improve- ments of which this country has been, perhaps, more prolific than any other. The forty-ninth exhibition is now being held, and in point of variety and interest of exhibits compares favora- bly with those of preceding years. No remarkable machines or processes are shown, but in several departments there are appliances which are decided ad- vances upon previous constructions. As a whole, the exhibition is well worth a visit, and there is much to be seen there that will repay careful examination. POWDER AND BALL FOR DEMA- GOGUES. PiiEsiDENT Hayes has been discuss- ing the subject of public education ; and, in his speech at Canton, Ohio, he called attention to the extent, and point- ed out the main sources, of illiteracy among our heterogeneous populations. Ten years ago, he says, there were three quarters of a million of negro voters Avho could not read their ballots, and in this respect things have not improved much since. The Indian tribes which we must soon absorb are equally igno- rant. Half the population of New Mex- ico can not read and write, and, of the enormous immigration from Europe, from twenty to twenty-five per cent, are to the same degree illiterate. Mr. Hayes maintains that it is the duty of the national Government to enter upon the great work of public education with the view of qualifying all these incom- petent citizens, present and prospective, for the proper exercise of the right of suffrage. In referring to these various classes of persons, Mr. Hayes uses the terms "illiteracy," "ignorance," and "un- able to read and write " interchange- ably or as equivalents ; that is, the " ignorance " of which he speaks seems to be that grade of incapacity or illit- erateness which is indicated by inabil- ity to read and write. We are left to infer that this is the ignorance which he considers dangerous to the state, and which it is therefore the duty of the national Government to remove. We assume that this is the sort of ignorance which Mr. Hayes means when he says, "In our own country, as everywhere else, it will be found that in the long run ignorant voters are powder and ball for demagogues." Are we to conclude, then, that in the belief of President Hayes, if the negroes, Indians, immigrants, and illiterate peo- ple generally are taught to read and write, American demagogues will be de- prived of their ammunition, and repub- lican government placed upon an en- during foundation ? Does Mr. Hayes think that the real danger to popular institutions in this country comes from the presence of those who are unable to read their ballots? Certainly the most dangerous class in the communi- ty is the demagogues themselves, and these can not only read and write, but they are commonly educated men. Nor is this all ; they are the dangerous ene- mies of republican institutions by virtue of that education which gives them com- mand of the means of mischief. And as it is by education that they are quali- fied for the skillful practice of their vicious arts, so it will be found that a certain amount of education on the part of their victims is necessary to bring them within the full range of demagogi- cal influence. It is not the illiterate classes by any means that are most mis- led and cheated by the demagogues. It is those who can read the newspapers and campaign documents that are most openly accessible to the flatteries, de- LITERARY NOTICES. 129 ceptions, and cunning artifices of wily political managers. The illiterate classes are indeed, to no small degree, pro- tected by their very ignorance from the most insidious forms of political impos- ture. They are manipulated by coarse methods, while the class of citizens who are called intelligent, morally require sharper practice to circumvent them. It is a great mistake to suppose that our demagogues are mere petty opei-- ators, animated by low cunning, and who find their chief prey among those who can not read their ballots. They are trained and accomplished men, sub- tle of intellect, inventive in resources, and well equipped with knowledge. The great mass of the people have a smattering of education, and the whole system of demagogical art assumes it and is adapted to it. The common schools teach just enough to turn out "powder and ball for demagogues." Our " machine politics " is the bright consummate flower of American dema- gogism, but it never could have had so vigorous a growth if the ignorance of American voters had not been duly cul- tivated. The more ignorant and stu- pid men are, the greater is their fealty to party, and the more easily they can be counted on; but, as they begin to think, the demagogue is thrown upon his resources, so that the effect of the schools is to cause him to perfect his methods. Of course, ignorant voters are everywhere " powder and ball for demagogues " ; we only insist that there shall be no demagogical narrowness in defining the class of ignorant voters. LITERARY NOTICES. Two Worlds are Ours. By Rev. Hugh Mac- MiLLAN, LL.D., F. R. S. E. New York: Macmillan&Co. Pp.349. Price, $1. 75. To say that this book is by the author of " Bible Teachings in Nature " and " First Forms of Ve!i;etation," published several years ago, will be a strong commendation to many readers. Those books were full of VOL. xviii. — 9 a peculiar interest derived from their au- thor's special studies ; and the present work, similar in character, well sustains the writ- er's reputation. Dr. Macmillan combines, in a somewhat marked degree, several traits which give character to his productions. He is first of all a devoutly religious man, of strictly orthodox opinions, and profound- ly impressed with the reality of the spir- itual world ; and he writes to illustrate and enforce the fundamental conceptions of the Christian system. Then he is an enthu- siastic student of nature, and well up in the latest results of science — especially in geol- ogy, botany, and zoology, the objects of which are so obtrusive in all the aspects of nature. He is besides a clear and pleasing writer, with a dash of poetic feeling which gives life and vividness to his descriptions, though sometimes betraying him into un- due fervor and elaboration of style Though his book is pervaded by the most literal or- thodox beliefs stated in Scripture forms, yet it is in no sense a polemic, nor is there any attempt to establish his theological views by the customary logical methods. He rather aims to enforce their truth by showing in what striking ways they harmonize with the methods and operations of nature. His vir- tual thesis is that the " Two Worlds," spir- itual and material, are ever in agreement when we get down to their deeper meanings, and he gives many ingenious and interesting exemplifications of this unity. The book is written in excellent temper, and is free from all asperity. Science is looked upon, not as the enemy but as the handmaid of faith ; and, although advanced views are accepted as a matter of course, there is never a word of disparagement of scientific men. The moral inculcations of the volume are ele- vated and impressive, and, with their fresh and attractive illustrations, can not fail to exert a wholesome and improving infiuence. Of its twenty-one chapters, those entitled "Grains of Sand," "Weeds," "Summer Blossoms," " Mountain Peace," " Leaven," " Snow," " Waste," and " The Days of a Tree," have most interested us. A True Republic. By Albert Sticknet. New York : Harper & Brothers, 1879. Pp. 271. Price, $1. Mr. Sticknet here grapples with the problem of the causes and the cure of the 130 THE POPULAR SCIENCE MONTHLY. widespread and increasing demoralization in American political life, and, where others who have as keenly felt the evil have content- ed themselves with vague utterances, he pro- poses a definite scheme of action. The im- patience with party methods and party dic- tation, which is now so evident among think- ing men, has not generally gone to the length of questioning the utility or neces- sity of such organizations. Parties are held, by even those most energetic in their oppo- sition to their present tendencies and meth- ods, to have a legitimate function in a free state. It is only their abuse that there is need to war against. Rightly limited, they are the sole means of giving effective ex- pression to the popular will, and for carry- ing out lines of national policy. Emanci- pated from the control of the self seeking classes, they are the most efficient agents of the control of the affairs of govern- ment by the people, and the problem of our politics is to get their management into proper hands. This opinion Mr. Stickney denies outright. Parties, in the sense of vast permanent organizations, are to him wholly an abomination. They do not now aid, and never have aided, in furthering calm political discussion, or in carrying measures of real value to the people. They are now, and always have been, organiza- tions for the carrying of elections. The great questions of the hour have indeed been used by them as their battle-cries, but the contest has always been for the places of honor and profit. They have pushed these questions to issue only to the extent demanded by their needs ; the real interests of the people have always been made sub- servient to their triumph. Wise legislation is the outcome of deliberation, of a careful consideration of the real merits of the ques- tions involved. It needs honesty of pur- pose and harmony of spirit. But the very essence of party is strife. Warring fac- tions, jealous of any possible advantage that one side may gain over another, per- petually prevent all harmony of action be- tween those holding by different parties. The action of legislators, elected to conserve the interests of the whole people, is deter- mined almost solely by party considera- tions. The division of votes on most ques- tions is along strictly party lines. As a means of affording discussion of the merits of the men and measures presented for popular suffrage, they are worse than use- less. The candidates are all chosen by the managers, and the people have only the choice of ratifying at the polls the selec- tions of the caucus. These are not acci- dental but inherent features of the party system. They are bad enough, but they are but a part of the evils due to it. The fea- ture that makes improvement hopeless, and that paralyzes all attempts to reform within party lines, is the influence that the system inevitably exerts over our public men. In it is to be found the cause of the progressive j corruption of public servants. Not only does it offer the opportunity for public ser- vants to do their work ill, but, more than that, it compels them to do it so. Their continuance in office is dependent upon their party carrying the next election. They are therefore forced to devote their time and en- ergies to keeping their places. They can not, therefore, give their attention to the proper work of their ofiices. More than this, they must of necessity administer these offices, not with an eye to the public good, but to the best advantage of their party. The sys- tem, therefore, makes it certain that the public will neither get good service from the men in office, nor get the best men to do Government work. These results are not peculiar to America. They have followed wherever tenure of office has been made to depend, not upon the faithful performance of duties, but upon political success. Men will always, at all times and places, give their best work to that upon which their preferment depends. If in this country party control has gone to greater lengths than in other countries, and not only the elective, but all offices, have come to be the prey of party faction, it is because the op- portunities have been greater. Our fre- quent elections make possible the profes- sion of the politician. Every few years a chance of a change in party control of the Government gives a promise of vacancy in great numbers of offices. Men, therefore, temporarily out of office can wait for one of these recurring opportunities. Mr. Stickney reviews English and American history in support of his position. He finds that se- curity of tenure and ofiicial purity have J LITERARY NOTICES. 131 been invariably associated, while corruption and tenure dependent upon political suc- cess have always gone along together. Sweeping as is the indictment of party, its methods and results, its substantial accu- racy will be questioned by few conversant with the facts. The evil is allowed, but the means of remedying it are not clear. To many it has seemed that there is no cure. Mr. Stickney is not of this number. His showing of the causes upon which the evil depends has revealed to him the method of eliminating it. The public does not get its best men in the public employ, or get from its servants their best work, because the best men will not condescend to the work necessary to enter and remain in the public service, and because they have not security in their position during " good be- havior." In the callings of private life men have the assurance that, if they do their work well, they will have employment for life. They have also the assurance that, if they do it ill, they will lose their employ- ment. They are therefore under constant pressure to do their work well. Mr. Stick- ney believes that these conditions can be realized in the public service by the changes in our political system which he advocates. These changes consist in abolishing the term system, in so arranging the control of ap- pointment and dismissal from office that there shall be direct responsibility for the performance of the work of the various departments, and in reducing the number of elective offices to the lowest point. To this end the President is elected as now, not for any definite term, but to continue in office so long as he performs his duties well. He has absolute control over the ap- pointment and dismissal of the heads of de- partments. These heads have in turn the same power over their subordinates, and are responsible to the Chief Executive alone for the work of their departments. And so down through the entire service, each em- ployee being responsible to his immediate superior for the faithful performance of his duties, and being assured of his place only so long as they are well done. To secure efficiency, each man must have work of only one kind. The Chief Executive is given no voice, as now, in legislation, his veto- power being taken from him. He is re- sponsible for the work of the entire Ex- ecutive branch of the Government to the National Assembly. Mr. Stickney favors only one body, of four or five hundred men, instead of the two we now have ; but, if there be two, it is sitting as one body that they form the Assembly to whom the Executive is responsible. The Executive may be at any time removed for any cause by a two-thirds vote of this Assembly. The Assembly has no voice in the choice of a new Executive. The senior department offi- cer is made President pro tern, pending the election of a new President. The members of the Legislature are elected, like the Pres- ident, for no definite term. They can be turned out of office by a two-thirds vote of the Assembly of which they are members. The judges are also made elective, but for no definite time. These are the only elec- tive offices, in the national. State, and city governments. All the others are by ap- pointment. Under this system the power of party as now existing would be destroyed, Mr. Stickney holds, because there would be few offices to be captured by election work, and, the tenure being dependent upon good behavior, it would be impossible to deter- mine when these few would be vacant. The office-seeker would then disappear, because the profession could no longer pay. And the office-seeker as a distinct class having disappeared, public servants would become as efficient and as honest as those in private life. The whole of Mr. Stickney's scheme turns upon this point — the breaking up of party organization by removing the oppor- tunities of profit which keep it intact. It seems to us that it is just here that the scheme fails. The power of party man- agers is dependent not upon themselves alone, but upon the following they can com- mand. And they can command this fol- lowing in virtue of the intensity of party feeling. It is because there are multitudes of men who can be rallied by the party cry to support it through thick and thin that the managers are able to prostitute the ser- vices of the Government to their own ends. The diminishing of the elective offices not only would not reduce this partisan feel- ing, but would have no tendency to do so. These elective offices are, moreover, but a part of those of the Government. The 132 THE POPULAR SCIENCE MONTHLY. great mass of those which arc now filled by appointment — and which, under Mr. Stick- ney's system, would be increased — are as much sought after by party workers as those that are elective ; and there is no greater se- curity under the proposed system than un- der the present, that they will be kept out of their hands. The security is even less, because the Executive has greater power. Suppose the chief Executive and the re- quired majority of the Legislature to be of the same party, with the same intense par- tisan feeling existing that now exists, what, under Mr. Stickney's system, is to prevent the offices from the top to the bottom be- ing filled with political workers, and kept there without any more regard for their fitness than at present. A majority gained by the other side would simply have the effect of putting in a new Executive, who might make a clean sweep of the depart- ments in the interest of his party. The only restraining force upon him then, as now, would be the pressure of public opinion, but that would necessarily be less than at present, because it could not make itself so effectively felt. The same party majority that would be able to keep the Executive in power for party reasons would also be able to keep members of the Legislature of their own party in their seats. Practically a member would be se- cure in his tenure unless guilty of the gross- est misconduct. And party standards of conduct are not of the highest. If this As- sembly were composed, as Mr. Stickney sup- poses, of the best and wisest men of the nation, and the chief Executive were a man of great administrative ability and honesty of purpose, doubtless his plan would work admirably. But a system must be judged by its ability to meet the worst cases. If the Assembly were filled with strong parti- sans, and the Executive were the willing tool of his party, the result would be anything but satisfactory, and there would be, under the law, no means of effecting a change. While the discussion of Mr. Stickney is in many ways suggestive, and throughout bears the evidence of careful thought, his system can not, to our thinking, be accepted as a solution of the problem. Without a destruc- tion of the party spirit, it affords no better security for efficient and faithful service than the present one, and, with the destruc- tion of this spirit, its purpose can be ac- complished with the system we have. An Elementary Text-Book of Botany. Translated from the German by Dr. K. Prantl, Professor of Botany in the Royal Academy of Forestry, Aschaffen- burg, Bavaria. The Translation revised by S. H. Vines, Fellow and Lecturer of Christ's College, Cambridge. With 275 Illustrations. Philadelphia : J. B. Lip- pincott & Co. 1880. Price, $2.25. In his preface to the English translation of Professor Prantl's text-book, Professor Vines tells us that the work appeared in Germany in response to a demand for an ■ introduction to Professor Sachs's well-known and voluminous " Lehrbuch der Botanik," that should resemble it in its mode of treating the subject. Professor Prantl's success in this undertaking is attested by the rapidity with which his book has passed to a third edition in his own country, and by its prompt translation into English. The large work of Professor Sachs was trans- lated by Bennet and Dyer, and published at Oxford in 1875. To readers unacquainted with this important volume, we may say that it introduces the student to the pres- ent state of knowledge concerning botanical science. It not only describes the phenom- ena of plant-life that are already accurately known, but it indicates those theories and problems in which botanical research is at present engaged. It is a quarto volume of 860 pages, of which some 200 are given to the consideration of " General Morpholo- gy," nearly 400 to " Special Morphology and Classification," about 200 to " Physiolo- gy," and the remaining 60 or 70 pages to chapters on " Plant Movements," " Sexual Reproduction," and " The Origin of Spe- cies." Professor Prantl's introduction to Sachs's " Botany " is an octavo volume of 832 pages. In treating a subject of such great extent in this brief space, the author has adopted a somewhat different order from that of the large work, and omitted many of the recondite subjects which are there so ably presented. The introductory chapter is devoted to external morphology. The anatomy of plants is treated in two chapters, the first upon cell-structure, con- tents, and development ; and the second J LITERARY NOTICES. 133 upon tissues. " Plant Physiology " is treat- ed in six chapters, and the remainder of the volume, over two hundred pages, is devoted to the " Classification of Plants." Special morphology is here elucidated, along with the exposition of the characters which un- derlie classification. The illustrations are numerous, attractive, and very helpful to an understanding of the text. As a brief exposition of the complete science of botany, we have seen nothing equal to this manual, which is every way worthy of the incomparable work to which it is the stepping-stone. Contributions to the ARCHiEOLOGT of Mis- SOCRI BT THE ArCH^OLOGICAI, SeCTION OP THE St. Louis Academy of Science. Part I, Pottery. Salem, Mass. : George A. Bates. $3.00. This handsome quarto volume is printed on heavy tinted paper, and is illustrated by five folded maps and twenty -four litho- graphic plates, containing one hundred and forty-eight figures. It contains a descrip- tion of the earthworks and brief references to the archaeological remains of southeast- ern Missouri, by Professor W. B. Potter, and a description of the ancient pottery by Dr. Edward Evers. Their descriptions are terse and to the point. Dr. Evers has no theory regarding the race of people who made this pottery, neither does he permit himself to see some symbolic conception in every quaint design he meets with. He gives precisely what his readers want, a pro- fusely illustrated volume of one hundred and forty-eight figures of various vessels, strong- ly drawn, and well drawn too. We congratulate the St. Louis Academy of Science on this evidence of its pros- perity, and we particularly congratulate its Archaeological Section that it wastes no time or money in rummaging through Greece, Cyprus, or other parts of the Old World, in quest of antiques, when at home such rich treasures are to be revealed. Life on the Seashore; or, Animals of OUR Coasts and Bays. With many Illus- trations. By James H. Emerton. Salem, Mass. : George A. Bates. $1.50. This little book forms the first volume of the "Naturalist's Handy Series," and is alike creditable to author and publisher. It will be found an exceedingly handy book for any one interested in the animals of the coast of New England. Much information regarding the development and habits of the lower animals is here given in a clear and concise form. As a successful zoological draughtsman, Mr. Emerton should remember that an ob- ject expressed in lines is to be acknowledged as fully as an idea expressed in words. This remark is necessitated by his neglect in many cases to give the authorities for the drawings he uses. The book is handsomely bound and printed. Introduction to the Mortuary Customs AMONG the North American Indians. By Dr. II. C. Yarrow. Washington : Government Printing-Office. 1S80. Pp. 107. The series of works, of which this vol- ume forms the third installment, has been undertaken with the object of obtaining a complete and trustworthy account of the present and ancient customs and beliefs of our North American Indians. Though much has been written on the subject by travelers and explorers, the amount which is of value is comparatively small, through carelessness of observation and the predispositions of the writers. The volumes only profess to be introductions, but it is hoped that, by awakening the interest and directing the attention of those in a position to obtain first-hand knowledge, a body of accurate and, in time, comparatively complete infor- mation can be obtained. Introductions to the study of Indian language and Sign-lan- guage, the first by Major J. W. Powell, and the latter by Colonel Garrick Mallery, have already appeared. The present volume will be followed by similar ones upon the medi- cine practice, the mythology, and the soci- ology of these Indians. In the preparation of the volume on mortuary customs. Dr. Yarrow has enlisted the services of a great number of observers, with the result of ob- taining a large mass of reliable data. The plan adopted was to send to Indian agents, physicians resident at agencies, army offi- cers, and others, a circular clearly setting forth the kind of information desired, and the precautions necessary to be taken to get it reliable. The ground covered by the vol- ume includes the care of the lifeless body 134 THE POPULAR SCIENCE MONTHLY, previous to burial, and the ceremonies at- tendant upon it ; the method of burial, the site, attitude of body, its manner of resting, the ceremonies and the beliefs of the tribe where it occurs concerning it ; the gifts of- fered to the dead, at the time of burial and later ; the superstitions relative to the influ- ence of the dead over the living ; and all those practices which express these beliefs, as well as the methods and periods of mourn- ing.. Many of the customs and practices do- scribed are extremely curious, and all are of interest, not alone to one whose studies have been in this field, but to all intelligent peo- ple. The cooperation of all who have op- portunities of observation of the Indians is solicited, to the end of making the final pub- lication on the subject as complete and val- uable as possible. Annals of the Astronomical Observato- ry OF Harvard Colllge. By Edward C. Pickering, aided by Arthdr Searle and WiNSLOW Upton. Vol. II, Part II. Photometric Observations. Cambridge, University Press : John Wilson & Son. 1879. Pp. 315. This is a continuation of the photomet- ric observations of Professor Pickering up- on the light of the stars. The observations include those upon the satellites of Mars, Ju- piter, Saturn, Uranus, and Neptune. Mea- surements have also been made of the light of unequal double stars, where the difference between the two is considerable, and also of that of a number of the asteroids. Some observations upon the limit of visibility have also been made, and are still in progress. A discussion of the results obtained on this latter subject is reserved for a future part. The Hair, its Growth, Care, Diseases, AND Treatment. By C. Henri Leonard, M. A., M. D., Professor of Medical and Surgical Diseases of Women in the Michigan College of Medicine. Illus- trated by 116 Engravings. Detroit: C. Henri Leonard. Pp. 319. Price, $2. The author has here evidently aimed to make a popular work, conveying as much scientific information as he can make con- sistent with that idea. It seems to bo a very good digest of general knowledge re- lating to the structure and diseases of the hair, and gives many hints respecting its care and healthful preservation. The vol- ume is interspersed with a great deal of cu- rious information respecting extraordinary hair-growths, and the author is fond of ap- plying the multiplication-table to the sub- ject, and bringing out the most astonishing results from insignificant elements. For example : " Were it possible to place end to end the hirsute covering of the heads of Detroit citizens, we would have a hair-line long enough to more than reach thirteen times to the moon, or one that would belt the earth some one hundred and twenty times at its equator." The volume is pre- paratory to a larger work, in which the author promises to show the possibility of the classification of animals from the dif- ferences in the microscopical structure of their hair-shafts. Essays on Art and Archaeology. By Charles Thomas Newton, C. B., Ph. D., D. C. L., LL. D. London : Macmillan & Co. 1880. Pp. 472. Price, $4. In this volume Mr. Newton has collected a number of papers contributed by him to different periodicals, most of them in recent years, though several date back a consider- able time. They are written in an agreeable style, and will be found of interest, not only to those who have more or less acquaintance with the subject, but to the wider circle of the general public. The opening paper of the volume, read at the Oxford meeting of the Archaeological Institute, in 1850, is an exposition of the scope of the science, bearing the title " On the Study of Archeology." In it the author considers the kind of records of the past of the human race with which archa:ology is concerned, the difficulties that encompass in- vestigation, and the need of museums, etc., where the collections of materials can be classified and disposed for intelligent study. Mr. Newton's experience, as keeper of Greek and Roman antiquities in the British Muse- um, qualifies him for the discussion of the best way of arranging the collections in that institution, which forms the second paper of the volume. That placed third is devoted to an account of the Greek sculptures from the west coast of Asia Minor, now in the same museum. A long and interesting es- say is that on " Greek Inscriptions," in which Mr, Newton points out the great LITERARY NOTICES. 135 mass of this material at the disposal of the archaeologist, and refers in detail to many of the more important inscriptions. Mr. Wood's discovery of the site, and his res- toration of the temple at Ephesus, which, in the time of St. Paul, was one of the seven wonders of the world, Mr. Newton presents in his article on " Discoveries at Ephesus," and the discoveries of Dr. Schliemann at Mycenfe in the one following. " Research- es in Cyprus," " Discoveries at Olympia," *' Greek Art in the Kimmcrian Bosporos," and " Greek Numismatics," complete the papers of the volume. A Greek inscription, engraved on the four sides of a stele of blue marble, which was some years since discov- ered in the Castle of St. Peter, at Budrum, is reproduced in an appendix. QaALiTATivE Chemical Analysis. By Silas H. Douglass, M. A., M. D., and Albert B. Prescott, M. D., F. C. S. Third edi- tion, wholly revised. With a Study of Oxidation and Reduction, by Oris Coe Johnson. New York : D. Van Nostrand. 18S0. Pp. 305. The new feature in this edition of this excellent manual is the text upon oxidation and reduction, by Mr. Otis C. Johnson, in which a new interpretation is given to quan- tivalence. The authors state that the meth- od of Mr. Johnson has proved veiy success- ful in teaching, and bespeak for it a careful examination by chemists. The subject is technical, and can be fully understood only by those acquainted with chemical theory and manipulation. Besides the addition of this new matter, the book has been care- fully revised, and such improvements made as the experience of actual use in teaching has suggested. Some Thoughts concerning Education. By John Locke. With Introduction and Notes by Rev. R. II. Quick, il. A. Cam- bridge, Eng. : University Press. 1880. Pp. 240. Price, 90 cents. Although put forth so long ago, the " Thoughts " still possess a value for the modern student of education. Locke's ideas of the purpose and scope of education were greatly in advance of the practice of his own time and of much of that of ours. He recognizes that education is properly a de- veloping of the natural powers, and not a mere loading down the memory with undi- gested knowledge. Many of his suggestions and recommendations are so entirely in agreement with modem views as to seem commonplace. His advice in the matter of physical education is especially noticeable for its concordance with present medical practice. Dr. J. F. Payne, who contributes valuable notes upon the medical portions of Locke's discourse, finds little to correct in his recommendations, except those advising that children's feet be wot, and they be oth- erwise exposed, to harden them. Besides the treatise of Locke, the book contains a biographical sketch of him, and a critical estimate of his services in education, and his relation to his predecessor in educational reform, Montaigne, and his successor Rous- seau. His plan of working-schools for the children of the poor and his essay "Of Study " form an appendix, while the notes of Dr. Payne, mentioned above, with others not so good, and an index, complete the vol- ume. The New Text-Book of Physics. An Ele- mentary Course in Natural Philosophy, designed for Use in High Schools and Academies. By Le Roy C. Cooley, Ph. D. New York : Charles Sciibner's Sons. 1880. Pp. 317. Professor Cooley was among the first to attempt to introduce into elementary in- struction in physics the modern doctrine of molecules and molecular action. In his text-book of natural philosophy, published some twelve years ago, he sought to give it a form suited to the comprehension of the class of students for whom the book was designed. In this revision of the former work he has aimed to do the same thing for the fundamental conception of the sci- ence— that of energy. Heat, light, etc., are accordingly presented as so many different manifestations of energy, and not as a num- ber of distinct forces. The work is ar- ranged to bring out the essential features of the conception, and then to show its ap- plications in explanation of the various groups of phenomena within the scope of physics. The first three chapters are de- voted to a gaining of clear ideas of the properties of matter and laws of motion. These lead up to the doctrine of energy, which is explained and illustrated in the 136 THE POPULAR SCIENCE MONTHLY. fourth. In the four succeeding chapters, the forms of energy constituting heat, light, sound, and electricity are considered, with such illustrative examples as exhibit the essential features of each group. A brief summary of the principles of machines forms the closing chapter. A new feature of the book is a review at the end of each chapter, consisting of principles and topics, and a number of problems. Simple restate- ment of principles in the order of the pre- vious discussion has been avoided, with the object of showing the truths enunciated in new relations and with added force. The text throughout is fully illustrated. Eminent Israelites of the Nineteenth Century. By Henry Samuel Morais. Philadelphia : Edward Stern & Co. 1880. Pp. 371. Price, $2. The careers of the hundred Jews, whose portraits Mr. Morais has presented in this volume, speak much for the inherent vital- ity and power of a race so long proscribed. The sketches are brief, much too brief to do justice to many of their subjects, but they are in the main judicious and are full of interest. The labors of these eminent He- brews take a wide range. Literature, the- ology, music, philanthropy, statesmanship, and commercial pursuits all have their rep- resentatives, many of whom have achieved not only distinction, but positions of the very first rank. They are as diverse in their nationalities as in the character of their la- bors, coming as they do from all European states, as well as from America. The rec- ord as a whole is one with which Jews have reason to be gratified, while it is interesting and instructive to a wider circle. Manual of Hydraulic ilixiNO, for the Use OP THE Practical Miner. By T. F. Van Wagenen, E. M. New York: D. Van Nostrand. 1880. Pp. 93. Placer-mining, the author states, is, when economically conducted, as certain of good returns as any ordinary avocation. Auriferous gravel deposits are very exten- sive on the Pacific coast, and, as the plant necessary is comparatively inexpensive, the miner has a wide field for remunerative work. He must, however, conduct his oper- ations with a knowledge of the nature of his materials and the most efficient way of working them to secure success. Most miners at present engaged in hydraulic min- ing, Mr. Van Wagenen says, have but slight knowledge of physics, and are more or less rusty in their arithmetic, so that many er- rors are made in construction and operation, which prove costly experiments. He has therefore attempted, in this little manual, to give, in a clear and concise form, the information needed to avoid such errors. Among the subjects briefly treated are the use of decimals; the methods of finding areas and volumes ; the pressure of water when at rest, and its flow through orifices and flumes ; the proper method of construct- ing flumes, their grades, size of nozzles, etc. Tables of square and fifth roots of the num- bers commonly entering into the miner's calculations are given at the end of the book. Deep-Sea Sounding and Dredging. A De- scription and Discussion of the Methods and Appliances used on board the Coast and Geodetic Survey Steamer Blake. By Charles D. Sigsbee, Lieutenant-Com- mander U. S. Navy. Washington : Gov- ernment Printing-Office. 1880. Pp.208. Lieutenant-Commander Sigsbee was in charge of the Blake for the four years from December, 1874, and during this time prosecuted extensive researches relative to the condition of the deep-sea bottom. Dur- ing the winter of 1874-75 soundings were made off the mouth of the Mississippi Riv- er, the total number of miles being 2,505. Nearly as many miles of soundings were taken in the Gulf of Mexico in the summer of 1875, and in the winter of that and the next year a system of east and west lines was run across the great bank west of the Florida Peninsula. Others were run on the northern portion of the bank, and a number from the delta of the Mississippi out to sea, closing with a line from the South Pass to the Yucatan Bank, and one from Alacran Reef to Tortugas. The remaining years were devoted to further soundings in this portion of the waters of the American coast. The Blake was very thoroughly fitted out for her work. Her party was one of the first to use piano-forte wire for deep-sea dredging and trawling, and the experience with it showed it to be much better than P OP ULAR MIS CELLA NY. 137 rope. The greater part of the apparatus used was either new or improved forms of that ordinarily used, and much of it was due to the ingenuity of Commander Sigs- bce. The present work does not go into the results obtained by the various expedi- tions, but is devoted to a description of the apparatus employed and statement of its actual value in use. Detailed drawings sup- plement the descriptions, and a large num- ber of heliotype plates clearly show the arrangement and method of using on board ship. PUBLICATIONS RECEIVED. Circulars of Information of the Bureau of Ed- ucation. No. 3. Legal Riiflits of Children. Wash- ington : Government Printing-Offlce. 1880. Pp. 96. Address before the American Association for the Advancement of Science, Section A. By Asaph Hall. Boston Meeting, August 25, 1880. Cambridge : John Wilson & Son. Pp. 16. Progress of Western Education in China and Siam. ?•?. 13. The Indian School at Carlisle Bar- racks. Pp. 5. Vacation Colonies for Sickly School Children. Pp. 3. From the Bureau of Education. Washington : Government Printing- Offlce. 1880. Water Pollution, and a Remedy for the Evils of the Present Water-Supply Systems proposed. By Nelson Green. New York: The Hub Pub- liihing Co. Pp. 29. Who planned the Tennes^^ee Campaign of 1862 ? or, .^nna Ella Carroll va. Ulysses S. Grant. By Matilda Joslyn Gage. Pp. 16. An Examination of the Double-Star Measures of the Bedford Catalogue. By S. W. Buruhain, Esq. Pp. 36. What constitutes a Discovery in Science ? By Dr. George M. Beard. New York. 1880. Pp. 7. A Reply to Criticisms on "The Problems of Insanity." By Dr. George M. Beard. 1880. Pp. 34. Occurrence of Microscopic Crystals in the Vertebrae of the Toad. By H. Carrington Bolton. Pp.4. Notice of Jurassic Mammals representing Two New Orders. By Professor O. C. Marsh. Dlnstrated. Pp. 5. National Association for the Protection of the Insane and the Prevention of Insanity. Boston. 1880. Pp. 31. Bitlletin of the Philosophical Society of Wash- ington. Vol. T, 1871-74. Pp. 49. Vol. n. 1874- '78. Pp. 392. Vol. Ill, 1878-80. Pp. 169. Wash- ington : Published by the Cooperation of the Smithsonian Institution. Drna: Attenuation : its Objects, Modes, Means, and Limits in Homoeopathic Pharmacy and Po- soloLiy. By the Bureau of Materia Medica, Phar- macv, and Provings in the American Institute of Homoeopathy, 1879 and 1880, J. P. Dake, M. D., Chairman. Philadelphia: Sherman & Co. 1880. Action of Light on the Soluble Iodides, with the Outlines of a New Method in Actinometry. Pp.22. The Literature of Ozone and Peroxide of Hydrogen. Pp. 63. Laws governing the De- composition of Equivalent Solutions of Iodides under the Influence of Actinism. Pp.7. By Dr. Albert R. Leeds. Memoirs of the Science Department of the University of Tokio, Japan. Vol. Ill, Part I. Report on the Meteorology of Tokio for the Year 2539 U879). T. C. Mendeuliall. Tokio : Govern- ment Printing-Offlce. 1880. On the Algebra of Logic. By C. S. Peirce. Reprinted from the "American Journal of Mathe- matics." Pp. 42. The Textile Record of America. Devoted to the Manufacture and Distribution of all Woven Fabrics: Cotton, Wool, Silk, and Flax Culture. Edited by Lorin Blodget. Philadelphia : Nagle & Ryckman. Monthly. Pp. 16. $3 a year. An Elementary Treatise on Analytic Geome- try, embracing Plane Geometry and an Introduc- tion to Geometry of Three Dimensions. By Ed- ward A. Bowser. New York : D. Van Nostraud. 1880. Pp.287. American Aristocracy. A Sketch of the So- cial Life and Character of the Army. By Duane Merritt Greene. Chicago: Central Publishing Co. 1880. Pp. 222. $1. The Minor Arts. By Charles G. Leland. Il- lustrated. London: Macmillau & Co. 1880. Pp. 14S. 90 cents. Hints for Home Reading. A Series of Chap- ters on Books and their Use by Ditt'orent Au- thors. Edited, with an Introduction, by Lyman Abbott. New York: G. P. Putnam's Sons. 1880. Pp. 152. 50 cents. School and Industrial Hygiene. By D. F. Lincoln, M. D. Philadelphia: Presley Blakiston. 1880. Pp. 152. 75 cents. German Thouc-ht from the Seven Years' War to Goethe's Death. By Karl Hillebrand. New York : Henry Holt & Co. ISSO. Pp. 298. $1.75. Diseases of the Throat and Nose. By Morell Mackenzie, M. D., London. Vol. I. Diseases of the Pharynx, Larynx, and Trachea. Illustrated. Philadelphia: Presley Blakiston. 1880. Pp.570. $4. POPULAR MISCELLANY. Improved Safety Construction of Ele- vators.— With an appliance in such general use as the elevator, means of securing safety in case of the parting of the cable, or failure of other parts of the moving apparatus, are of prime importance. A great variety of devices, many of them quite ingenious, have been designed to accomplish this object, but few of them are entirely satisfactory. They have done much to decrease accidents, but these still happen frequently enough with them to show the necessity of a more perfect apparatus. These mechanical stops consist of combinations of levers, pawls, and clutches so arranged that the weight of the carriage will throw them into action. Both classes, those which bring the carriage to a sudden stop, and those which act as a break, need to begin to act the moment the fall commences, or the motion becomes so great as to be beyond control. From various causes impossible to provide against, these devices 138 THE POPULAR SCIENCE MONTHLY. frequently fail at the critical moment, caus- ing loss of life or damage to property. Re- cently a system of protection has been per- fected and is now being introduced, which, the promoters claim, secures perfect safety, and the trials made in this and other cities seem to amply confirm the claim. It con- sists in making the descending carriage act as a plunger to compress the air in the shaft below it, so as to form a cushion which re- tards and gradually overcomes its motion. The change in the ordinary construction of the elevator to secure this action is very slight, and can readily be applied to one al- ready put up. The shaft is made to fit the elevator carriage closely, through the first three or four feet of the lower portion, and then gradually widens to the full size. This funnel-shaped portion extends from fifteen to twenty feet above the contracted base, depending upon the size and height of the elevator. A stiff rubber flange around the lower edge of the carriage leaves a space for the escape of the air in the contracted portion of not more than one fourth of an inch wide. The straight part of the shaft above the funnel is of a size to leave a space of six to eight inches all around the carriage. With such a constructed shaft, the carriage, when it begins to fall, readily presses the air from beneath it up the sides of the shaft. As it gains in velocity, greater resistance is offered by the air, and, as it de- scends through the funnel portion, this is rapidly increased by the narrowing of the air outlet. When the contracted base portion is reached, the confined air has only a narrow outlet, and the resistance it offers is consequently very great. The air ar- rests the motion of the carriage so gradually that there is very little shock. In one of the trials in this city where the fall was seventy- five feet, eggs and delicate glassware placed on the floor of the car were unbroken. A great number of trials have been made, and many persons have gone down in the falling cars without injury. With the shaft prop- erly and strongly built in the lower portion where the strain comes, this apparatus seems to offer no chance of failure. Types of Pottery. — Professor E. S. Morse read an interesting paper on this subject at the last meeting of the American Associa- tion. The earlier types belonging to the shell-heaps of Japan were described and illustrated by specimens from each of the deposits examined by Mr. Morse and his special students. The pottery of Yezo was nearly all cord-marked, while the shell-heap pottery of the middle of Japan had a much less proportion cord-marked. In the south- ern portions of Japan, at Higo, cord-marked pottery was extremely rare. lie remarked on the extreme diversity in the shape and ornamentation of the pottery in different places in Japan — the pottery of Yezo re- sembling the pottery of the northern Uni- ted States, and the pottery from the central portions of Japan resembling that found in Porto Rico and Jamaica. He also spoke of the hard, blue pottery supposed to be Corean, and associated with it a red pottery which might have been made by the same people. This was lathe-turned. Other forms were mentioned and illustrated by examples. The Fiftieth Meeting of the British As- sociation.— No remarkable discoveries were brought forward at the recent meeting of the British Association for the Advancement of Science, but the addresses and papers in the various sections showed a steady ad- vance in scientific work. Professor A. C. Ramsay, the new President, chose for the subject of his inaugural address the doctrine of uniformity, under the title of " The Re- currence of Certain Phenomena in Geologi- cal Time." There has recently been a dis- position in certain quarters to question the truth of the doctrine in the extended appli- cation made by most geologists. The ques- tioners admit that geologic changes in times past were produced by the same forces now in operation, but deny that they were of the same degree. The uniformity and cataclys- mic theories seem to them to both contain truth. Professor Ramsay reafiirms the uni- formity doctrine in the broadest and most general manner, and very ably defends his position. One of the most valuable if not the most important address of the meeting was that of Professor W. G. Adams, before the Section of Mathematics and Physics, re- viewing recent work in the domain of molec- ular physics. His statement of the molec- ular condition of the three forms of matter — solid, liquid, and gaseous — was the clear- POPULAR MISCELLANY. 139 est and least technical that has been made. He reviewed the work done by Lockyer and others in spectrum analysis, and, without committing himself to the conclusions drawn from them by the several workers, point- ed out that the advance in our knowledge of molecular action is in the direction of effacing the distinction between chemistry and physics. It seemed to him even that all the sciences were becoming more and more branches of physics — that they " are yielding results of vast importance when the methods and established principles of phys- ics are applied to them." Professor Adams closed his address with a consideration of the influence of the sun in producing magnetic diurnal variations. A number of reports were submitted in this section, the most im- portant of which was that on the present state of spectrum analysis. It gave an ac- count of recent progress both in the meth- ods and results, together with an extended list of everything that had been published on the subject in the past few years. Pa- pers were contributed by Mr. Preece, on the proper form of lightning-conductors, and by Mr. Richard Anderson, on the necessity of inspection of them. Dr. Tempest Ander- son described an improved heliograph and an apparatus for estimating astigmatism. A powerful magnet for magneto-machines was described by Mr. Ladd, and a new form of electro-motor by Mr. Weisendanger. In the Chemical Section Dr. J. H. Gilbert gave an able summary of the state of agricultural chemistry, with an account of his own re- searches during a number of years, and criti- cism of various methods of applying chemis- try to agriculture that have found advocates. The report upon the best means of obtain- ing light from coal-gas was the one in this section of the greatest interest to the pub- lic. It concludes that improved light must be sought in the use of more perfect burners, and that the best, fitted with governers, now made by Sugg, Peebles, and others, answer all practical purposes. In the Biological sec- tion, the principal feature was the address of the Vice-President, F. W. Balfour, before the Department of Anatomy and Physiology. He sketched briefly the progress recently made in embryology by applying the laws of variation and heredity. He contends that the evidence now in favor of the devel- opment theory is overwhelming, and there are very few naturalists who do not ac- cept it in its main features. Dr. Sorby's address before the Geological Section was an important discussion of the structure of vol- canic rocks and artificial slags, showing that a study of the process of formation of the latter throws much light upon that of the former. Professor Prestwich here took ex- ception to the conclusions of Professor Ram- say's address regarding unvarying uniform- ity, contending that the superficial deposit termed " trail," " warp," and " head," in the southwest of Europe showed that this part had been submerged in recent geological times. Other papers of interest and value were those by G. M. Dawson on the " Geology of British Columbia," by Dr. Phene ; on the geology of the Balearic Islands ; and by Mr. W. T. Blanford on the age and relations of the Pikermi and Sewalik faunas in India. Sir J. H. Lef roy, in the Geographical Section, devoted his address to the advances made in geographical research in North America, showing that the great increase of our knowl- edge of this region is due to railways and the various State surveys. Among the in- teresting facts mentioned are the rise in the level of some American lakes, and the depths to which the ground is permanently frozen in the northern part of British North America. Though, before 1866, the surface of Salt Lake had been falling, since that time it has risen eleven feet. Pyramid Lake has risen nine feet, and Lnke Winnemucca twenty-two feet. No theory of the cause was advanced. The ground at Fort Norman, on the Mackenzie River, is frozen to a depth of forty-five feet, and at York Factory, on Hudson Bay, but twenty-three feet, while at Yakutsk, Siberia, it is frozen to a depth of three hundred and eighty feet ! Quite a number of papers were read in this section, showing a large and rapid increase of geo- graphical knowledge. The most important of the public lectures was that by Mr. Fran- cis Galton, on " Mental Imagery," which is published in the present number of the " Monthly." Professor Boyd Dawkins deliv- ered an address on " Primeval Man," which was mainly a summary of the matter of his recent work. An account of " Professor Nor- densjold's Expedition" was given by Mr. F. Seebohm to an audience of workingraen. 140 THE POPULAR SCIENCE MONTHLY The Wcstinghonse Aatomatic Brake. — The well-known Westinghouse air-brake, in- vented and so largely used in this country, seems to be rapidly gaining in favor abroad. The English journal " Iron," in a recent is- sue, highly commends it as answering all the requirements of a perfect brake, as laid down by the Board of Trade, and gives some valuable statistics concerning its use. Fi'om returns received up to the 20th of last July, it appears that the number of applications of the automatic brake throughout the world is — to engmes, 3,277, and to carriages, 13,- 502. This is an increase in less than four- teen months of 1,594 to engines, and 6,255 to carriages. Besides this, there are 2,472 en- gines and 8,812 carriages fitted with the non- automatic brake — that is, the one using ordi- nary air-pressure. This, then, makes a total of 5,749 engines and 22,314 carriages fitted with this apparatus. In the case of 678 engines and 2,720 cars a change has been made from the non-automatic to the auto- matic. This equipment is divided between the different countries as follows : The Uni- ted States has 2,211 engines and 7,224 cars using it ; England 456 engines and 2,942 car- riages ; in France there are but 203 engines and 1,609 carriages; and in Belgium 197 of the foi-mer and 1,241 of the latter. The num- ber in use in Germany, Russia, and Holland is small, ranging from 55 to 28 engines and 93 to 117 carriage equipments. A few are also in use in Italy, Sweden, and the British provinces. Certain very excellent improve- ments and additions " Iron " points out have recently been made to this brake system, which greatly increase its usefulness. There are amethod of lighting the cars and a means of communication with the engineer by the passengers. The light is produced by carbu- retting air in a manner somewhat similar to that in common use in the numerous port- able gas-machines. The air is reduced from the high pressure necessary to operate the brakes to a moderate and steady one. It is then passed into a small iron box containing sponges saturated with gasolene, and from these passes to the burners. The light is said to be of good quality and sufficiently bright to see to read fine print in any part of the car. Its cost is much less than gas or any other material commonly used for this purpose on railroads. The communi- cating apparatus consists of an arrangement of air connections, such that the pulling of a handle in the car starts a whistle on the engine and on the car, and puts the brakes partially on. The attention of the engineer being attracted, he can complete the appli- cation of the brakes if he is in a favorable position for stopping, or, if not, release them. The handle once pulled, the pass«}ger can not return it to its place. This can only be done by one of the trainmen, so that im- proper use of the apparatus is readily de- tected. This appliance is especially designed to meet the requirements of passengers in the compartment carriages, such as are used abroad. With the American system of cars, the bell-rope furnishes a ready means of communication, while the trainmen are gen- erally within easy call. The lighting and communicating apparatus can be added to carriages after the brake is put in, and but one connection between the carriages is re- quired. The Circulation of Sap in Trees.— Pro- fessor Joseph B5hm has suggested, as a theory to account for the circulation of the sap in plants, that the exhaustion of the water by evaporation from the top of the plant causes a difference in pressure in the adjoining cells, which produces a sucking up of the fluid from the cells that are relatively rich to those that are relatively poor in water. He has also endeavored to make clear what is the purpose of those vessels which run the whole length of deciduous trees, and which can be easily perceived with the naked eye in sections of many spe- cies, as the oaks, maples, etc. Generally these vessels have been regarded as air- vessels, but Professor Bohm has been con- vinced that in many plants they not only receive sap by measured transpiration, but also in consequence of an active exhalation take up a relatively great quantity of water, so that the air fails to penetrate them at the ordinary pressure and only escapes in con- siderable quantities after the plant has be- come drier. It has also been shown that the branches of many plants, willows for in- stance, notwithstanding their vessels are supplied with fluid, are able to take up more water from without, and in such quantities that twigs will increase in weight twenty POPULAR MISCELLANY. 141 per cent, in the course of a few days. Pro- fessor Bohm's theory corresponds closely with that advanced by Professor Draper in his work on the circulation in plants and animals, and substantially agrees with the views of Herbert Spencer, as expressed in his paper on " Circulation and the Forma- tion of Wood in Plants " (" Transactions of the Linncean Society," March 1, 1866). It supposes that the sap-bearing cells in the whole plants are subject to a moderate pressure in consequence of the resistance which the water meets on its way from the root to the assimilating leaf. If, however, the branch can take up water through a cut end with little difSculty, a partial absorption of the contents of the vessels into the sap- bearing cells will follow, new water will pass through the cut end from without into the vessels, and the limb will become heavier. In this process, the ducts of the willow do not serve as air-tubes, but as water-canals which pour their contents into the pump-system of the sap-bearing cells. These canals become obstructed, after the cuttings have stood for some time in the water, by the growth of cells across the tubes. As soon as the flow of water through the vessels to the Iiigher part of the limb is thus interrupted, the rapid increase of weight ceases. That the cutting does not perish at this stage, but continues to live for several months without any consider- able increase of weight, is due to the fact that after the ducts have been closed the circulation of water takes place only through the sap-bearing cells and is greatly retard- ed. In another series of plants, as the oaks, acacias, catalpas, amorphas, etc., the ducts of the new wood have been found to be penetrable to the air, but neither air nor water could pass through the old wood, because the older veins were closed by trans- verse cells or gummy substances. The ves- sels of these plants were really air-vessels, for they held only air of the tension of the atmosphere and were destitute of sap. Yet an uninterrupted stream of sap must be kept up in such plants from the root to the top. It takes place in the same manner as in willow-cuttings, the vessels of which have been closed by transverse cells — that is, the sap is filtrated from cell to cell, so that the balance in the pressure of the contents of the adjoining cells which has been disturbed by transpiration is restored. It follows from this that the tension of the air in the upper sap-bearing cells must be very slight to make a rising of the sap possible. The exhaustion of the air finally reaches its ex- treme degree at an appointed age of the cells, the air in the cells is cut off from the neighboring vessels, and the factor which produces the rise of sap is thereby elimi- nated. The wood, which was a living sap- wood, becomes a dead heart-wood. This process is accomplished with different de- grees of rapidity in different kinds of plants ; even in individuals of the same species, cir- cumstances cause many differences in the formation of heart-wood. The final result is, however, always the same, the natural death of the tree by debilitation. The thin outside layer of living wood is no longer sufficient to supply the expanded top with fluid food, no formation of new wood worthy of the name takes place, the limbs die out year by year, and finally only a feeble shoot here and there, with a few leaves of a strange- ly light color, indicates that there is still a little life in the stem, and this is destined soon to be extinguished. Those trees whose vessels continue to be filled with water in their old age, as the willows, birches, lin- dens, horse-chestnuts, etc., do not die in this manner, but through a dissolution of their sap-bearing vessels and wood-cells, opening the way for the introduction of fungi-, which settle within them and attack their sub- stance. The process of decomposition spreads and the wood is gradually reduced to dirt, till the tree finally falls or is blown to the ground. The French issoeiation. — The French Association for the Advancement of the Sciences held its ninth annual meeting at Rheims. The opening address was deliv- ered by the President, M. Krantz, who re- ferred to the growth of the Association since its organization, just after the close of the Franco-German war, and to the results of the Great Exposition of 1878. The prog- ress of the Association has been continu- ous and marked from year to year, and it now numbers thirty-one hundred and fif- ty-six adherents. It has a capital exceed- ing three hundred thousand francs, and 142 THE POPULAR SCIENCE MONTHLY has distributed funds in aid of investiga- tion to the amount of about seventy thou- sand francs. The Secretary, M. Mercadier, stated that five hundred and seventy-two members had been enrolled since the last meeting at Montpellier to the 1st of Janu- ary, 1S80, and that five hundred and sixty inscriptions had been received since then. The Association receives a gift of one thou- sand francs a year from M, Kuhlmann ; the city of Paris and the city of Montpellier, fol- lowing its example, have instituted funds out of the surpluses remaining from the col- lections for entertaining the sessions, to pro- vide small subventions ; and M. Brunet has given twenty-three thousand eight hundred francs for the foundation of an annual sub- vention of one thousand francs. More than three hundred papers had been sent in at the opening of the sessions. English and American Birds. — Mr. H. D. Minot records his impressions of English birds as compared with American in the August number of the " American Natural- ist," and his good opinion of American birds is not depreciated by the comparison. Birds are less abundant in England than with us, but are, on the other hand, more accessible and companionable — for the hoys in England do not stone, and the men do not shoot them, at every opportunity. They seem to be heavier and slower of flight than in America. This was observed particularly of the wild pigeon, the swift, and the grouse. Further- more, says Mr. Minot : " I believe I may justly say that as the birds of England are inferior to those of New England in variety, so are they, on the whole, in coloring and in song. Her kingfisher may be as tropical in brilliancy as our humming-bird ; her thrushes, swallows, and finches as pretty as any other of their tribe ; but with the exquisite and delicate beauty of our wood-warblers, and with the splendor of our tanagers, orioles, and starlings, she has almost nothing among her familiar friends to compare. Then, among her song-birds, of whom I heard nearly all, she has none corresponding as musicians to our hermit-thrush, house-wren, water-warbler, solitary vireo, song-sparrow, or rose-crested grosbeak ; yet all these, and many kindred that I might associate with them here, arc good singers. To all her song- birds (that I have heard), on the contrary, except two or three, we have singers corre- sponding, and to all absolutely, I may say without prejudice, equals or superiors, as well as I can judge." The nightingale did not quite meet his anticipations, but he re- cognized that " it had a most wonderful com- pass, and was the greatest of all bird vocal- ists, but with a less individual and exquisite genius than our wood-thrush, yet, to hear that delicious, soft, liquid, warbled trill which she alone can give was a lasting pleasure." The flight of the skylark " is indeed astonishing, though exaggerated by report. . . . His song is an unbroken, ec- static torrent ; but it is shrill, slightly harsh, and not very musical. It is not so rich as our bobolink's roundelay, and its sweetest notes, though they suggest, do not equal, the canary's song, except for their intensity of utterance. All his poetry and the secret of his charm are in his flight." The most indi- vidual and only new type of bird-song Mr. Minot heard was that of the wood-lark, " the repetition of a delicate whistle (c/t'wee), shrill at first, intensifying as the bird rises, and, as he drops, falling in tone and pitch so as to die away upon the ear. It is exquisite." Other singers are the song-thrush, whose music is like our brown thrush's, but with less variety and occasional harsh notes ; the blackbird, with a richer and more liquid and at times exceedingly delightful song; the wren, singing with characteristic sweetness and power, the black-cap linnet, and chaf- finch, to whose songs Mr. Minot gives only faint and qualified praise. Robin-redbreast is charming on account of its associations. Mr. Minot earnestly commends the collections of birds in the local museums, especially those at Salisbury and Torquay. Transformation of Sonnd into Light. — M. Tr^ve, a ship captain, has described to the French Academy of Sciences an experi- ment with the apparatus called the singing condenser, by which he believes that he pro- duces a transformation of sound into light. If we bring the current of a Ruhmkorfif coil to bear upon one of these condensers, the latter will repeat on a larger scale the vi- bratory movement of the coil. The noise which it makes is due to the vibrations of the air in the condenser under the shock of NOTES. Hi the electric current. If we put a light pres- sure upon the leaves of the condenser, the sound will be diminished in proportion as the pressure is increased, till it ceases. Re- versing this experiment, M. Tr^ve put a con- denser into a Geissler tube, and brought the two poles of the inductive current of the Kuhmkorff coil to bear upon it through the electrodes of the tube. The tube was then connected with an air-pump. The condenser sounded as usual when the current was di- rected to it under the ordinary atmospheric pressure; as the air was withdrawn, the sound became more feeble, till, when a vac- uum was produced, it ceased, and instead of it there shone a clear, bright light, sparkling like pearls, from the leaves of the condenser. It was not like the pale and vague light of the Geissler tubes, but something, he says, quite different, sharp and distinct — a con- densed light. Caves in Japan. — Professor Morse also described a number of artificially construct- ed caves which he had examined in various parts of Japan, giving sketches of them on the blackboard. These caves varied con- siderably in their design, but agreed in their general proportions, and were evidently in- tended as receptacles for the dead. They were excavated in soft rock on the sides of hills — the apertures small, and in some cases showing grooves for the adjustment of slabs of rock or other material to close them. The absence of remains in these caves could be explained by the fact that in earlier times outlaws and refugees often used them as places of shelter and residence, and laws had finally been passed by the governors of some of the districts, causing the caves to be filled up, or their entrances obstructed, to prevent their being used in this manner. NOTES. During an excursion to the White Moun- tains made in July, 1879, Mr. W. H. Pick- ering visited a moving mass of snow in Tuckerman ravine, which he describes as pre- senting many of the phenomena of an Alpine glacier, only on a greatly reduced scale. The surface of the snow was convex, being high- est at the middle ; where not exposed to the sun it was very hard, and differed from ice only in color. Stones previously plated upon the surface of the patch showed that the middle had a motion of about eight inch- es per day, the sides moving more slowly. In Mr. Pickering's opinion, it corresponds with the upper portion of a glacier, and might, perhaps, be called an incipient gla- cier. An illustration of the fixedness of the characters of plants is shown from the analy- sis of specimens of the oleaginous Chinese pea {Soya hispida) from Hungary, China, and France. Only insignificant differences in composition were discovered notwithstand- ing the peas had grown in widely separated countries under very different conditions of climate and soil. Professor Benjamin Peirce, F. R. S., LL. D., died in Boston October 6, 1880, aged seventy-one years. He graduated at Har- vard College in 1829, was made Professor of Mathematics and Js^atural Philosophy in that institution in 1833, and Perkins Pro- fessor of Astronomy and Mathematics in 1842. The minute organisms or microbes, which M. Pasteur has shown to be concerned in epidemics and contagious diseases, are so very minute that they may sometimes easily escape detection, especially in pure water. In such case they mny be killed, without being deformed, by certain chemical agents, among which is osmic acid, and will sink to the bottom in such quantities as to admit of microscopic examination. The deposit may be examined after several hours (twenty- four or even forty-eight) if the water has been very pure. Coloring reagents mixed with dilute glycerine may also be used with advantage in the work. A CONSIDERABLE number of the workmen engaged in the boring of the tunnel of St. Gothard were prostrated by a dangerous anemia. M. E. Perroncito, who has been investigating the causes of the disease, has found that all those who were affected by it were also troubled by certain species of parasitic worms, the mere presence of which was sufficient to account for the develop- ment of disease. This case is not an iso- lated one. Dr. Giaccone, a medical atten- dant of the St. Gothard company, states that a disease of identical character ap- peared during the boring of the tunnel of Frejus. An ostrich, long on exhibition at Rome, having been suffocated by thrusting its neck between the bars, there were found in its stomach four large stones, eleven smaller ones, seven nails, a necktie pin, an envel- ope, thirteen copper coins, fourteen beads, one French franc, two small keys, a piece of a handkerchief, a silver medal of the Pope, and the cross ©f an Italian order. 144 THE POPULAR SCIENCE MONTHLY. Thk phenomenon of the perforation of rocks by sand carried on tlie wind has been observed in the Valley of the Rhone in France. A %'ery violent wind often prevails in the neighborhood of Uzes, and drives large quantities of sand against a band of quartzose pebbles contained in a tertiary soil. The pebbles contain cavities which might be believed to have been made by human hands, but which are really produced by the often renewed friction of the sandy particles against their surface. Dr. Charles T. Jackson, distinguished as a chemist and geologist, and one of the dis- coverers of the anaesthetic properties and uses of ether, died at Somerville, Massachu- setts, on the 29th of August, 1880, aged sev- enty-live years. According to the recent census of New Zealand, the Maories or primitive inhabi- tants are rapidly decreasing, their num- bers, which in 1861 were 55,334, having fallen in seventeen years to 43,595, or about twenty per cent. The causes given for this national decay are love of drink, bad food and clothing, neglect of cleanli- ness, and unwholesome dwellings. The na- tives of Hawaii are disappearing still more rapidly. In 186(5 they numbered 57,125, and had fallen off in the next twelve years to 44,088. The report of the experts employed to ascertain the causes of the Tay Bridge dis- aster is in refreshing contrast to the excu- satory treatment of official recklessness and incompetency in this country. The bridge, according to this report, was badly designed, badly constructed, and badly maintained, and it tumbled down on account of defects of structure that became apparent and were patched up some time before the casualty happened. The initial blunders are laid at the door of Sir Thomas Bouch, the designer and constructor of the bridge, and General Hutchinson, the Board of Trade Inspector, has to bear the blame of allowing the bridge to be used when he knew it was in this dan- gerous condition. M. BoL'TiGNY has called attention to the remarkable powers of resistance against chemical agents possessed by insects. Hav- ing put a common fly into the lye of potash, he found it in the best condition on the next day. He also found that weevils, imprisoned for a considerable time in a flask containing caustic stone and coriander-seed, prospered, multiplied, and lived as long as the seed lasted. Samuel Sherman Haldeman, Professor of Comparative Philology in the University of Pennsylvania, died at his home in Chic- kies, Pennsylvania, September 10, 1880, at the age of sixty-eight. M. RiVETT Carnac, who has explored many of the barrows and burial-mounds of India, has found in them new evidences of the resemblance of the mounds and their contents to similar works in Europe. The shape of the tumuli is the same in the East and the West, and they are always placed on the slope of a hill facing the south. Professor Forel, of Merges, Switzer- land, has just published some interesting observations he has made upon the flicker- ing of gaslights. At a distance of six miles these lights appear to the eye as star-like shining points ; and from a large number of observations Professor Forel has arrived at the conclusion that their flickering is strong- est when the air is still, and becomes weaker as the force of the wind increases. This appearance should not, of course, be con- founded with the flickering which is pro- duced by the wind. The study of the at- mospheric conditions under which the flick- ering takes place might be made the starting- point for investigating the twinkling of the stars. Fritz Muller has found a bivalve crus- tacean allied to Cythera, a salt-water genus, living between the leaves of the bromeli- ads, or plants of the pineapple tribe, which grow upon the trees in Brazil. It does not resemble any living entomostracan, but has its nearest known ally in a fossil species of the Silurian strata of Bohemia. Miillcr has named it Elpidium hromelUarimi. He found it in the tree-frequenting bromeliads every- where from the seaside to nearly one hun- dred miles in the interior. As it can not wander from tree to tree, or even from one plant of bromelia to another, its distribution must be efi"ected by beetles or some other bromelia-infecting forms. By putting chloride of aluminum, the vapor of water, and metallic magnesium in a heated porcelain tube, Stanislas Meunier has produced a multitude of microscopic octahedral crystals, of extreme hardness and wholly proof against the action of fuming nitric acid, which he says have the same composition as natural spinelle. He has also produced, by the reaction of water and chloride of aluminum, hexagonal laminas of corundum crystallized as in nature. In a paper on Japanese Pidmonifera, read at the Boston meeting of the American Association, Professor Morse called atten- tion to the occurrence of a number of spe- cies of land-snails in Yezo, identical with forms occurring in New England. He also alluded to the occurrence of two species of slugs in Japan which are common in New England. While he had met with most of fresh-water genera of Puhnonifera in Japan, he had never yet found a- example of Physa. ^.'t's.V?. Si^*- . ~>- JEAN BAPTISTS ANDRfi DUMAS. THE POPULAR SCIENCE MONTHLY. DECEMBER, 1880. THE DEVELOPMENT OF POLITICAL INSTITUTIONS. By HERBERT SPENCER. II. — POLITICAL OBGANIZATION IN GENERAL. THE mere gathering of individuals into a group does not constitute them a society. A society, in the sociological sense, is formed only when, besides juxtaposition, there is cooperation. So long as members of the group do not combine their energies to achieve some common end or ends, there is little to keep them together. They are prevented from separating only when the wants of each are better satisfied by uniting his efforts with those of others than they would be if he acted alone. Cooperation, then, is at once that which can not exist without a society, and that for Avhich a society exists. It may be a joining of many strengths to effect something which the strength of no single man can effect ; or it may be an apportioning of different activities to different persons, who severally participate in the benefits of one another's activities. The motive for acting together, originally the dominant one, may be defense against enemies ; or it may be the easier obtainment of food, by the chase or otherwise ; or it may be, and commonly is, both of these. In any case, however, the units pass from the state of perfect independence to the state of mutual depen- dence ; and as fast as they do this they become united into a society rightly so called. But cooperation implies organization. If acts are to be effectually combined, there must be arrangements under which they are adjusted in their times, amounts, and characters. This social organization, necessary as a means to concerted action, is of two kinds. Though these two kinds generally coexist, and are TOL. XVIII. 10 146 THE POPULAR SCIENCE MONTHLY. more or less interfused, yet they are distinct in their origins and na- tures. There is a spontaneous cooperation which grows up without thought during the pursuit of private ends ; and there is a cooperation which, consciously devised, implies distinct recognition of public ends. The ways in which the two are respectively established and carried on present marked contrasts. Whenever, in a primitive group, there begins that cooperation which is effected by exchange of services — whenever individuals find their wants better satisfied by giving certain products which they can make best in return for other products they are less skilled in making, or not so well circumstanced for making — there is initiated a kind of organiza- tion which then, and throughout its higher stages, results from endeav- ors to meet personal needs. The division of labor, to the last as at first, grows by experience of mutual facilitations in living. Each new specialization of industry arises from the effort of one who commences it to get profit, and establishes itself by conducing in some way to the profit of others. So that there is a kind of concerted action, with the elaborate social organization developed by it, which does not originate in deliberate concert. Though it is true that within the small sub- divisions of this organization we find everywhere repeated the relation of employer and employed, of whom the one directs the actions of the other ; yet this relation, spontaneously formed in the pursuit of private ends and continued only at will, is not made with conscious reference to achievement of public ends : ordinarily these are not thought of. And though, for the regulating of trading activities, there eventually arise agencies serving to adjust the sujjplies of commodities to the demands ; yet such agencies do this not by direct stimulations or restraints, but simply by communicating information which serves to stimulate or restrain ; and, further, these agencies themselves grow up not for the intended purpose of thus regulating, but in the pursuit of gain by individuals. So unintentionally has there arisen the elaborate division of labor by which production and distribution are now carried on, that only in modern days has there come a recognition of the fact that it has all along been arising. On the other hand, that cooperation which unites the actions of individuals for a purpose immediately concerning the whole society, is a conscious cooperation, and is carried on by an organization of another kind, arising in a different Avay. When the primitive group has to defend itself against other gi'oups, its members act together under further stimuli than those constituted by purely personal desires. Even at the outset, before any control by a chief exists, there is the control exercised by the group over its members ; each of whom is obliged, by the consensus oi opinion, to join in the general defense. Very soon the warrior of recognized superiority begins to exercise over each, during war, an influence additional to that exercised by the opinion of the group ; and, when his authority becomes established, it POLITICAL ORGANIZATION IN GENERAL. 147 greatly farthers combined action. From the beginning, therefore, this kind of social cooperation is a conscious cooperation, and a cooperation which is not wholly a matter of choice — is often much at variance with private wishes. As the organization initiated by it develops, we see that, in the first place, the fighting division of the society displays in a more marked degree these same traits ; the grades and divisions con- stituting an army cooperate more and more under a regulation, con- sciously established, of agencies which override individual volitions — or, to speak strictly, control individuals by motives which prevent them from acting as they would spontaneously act. In the second place, we see that, throughout the society as a whole, there spreads a kindred form of organization — kindred in so far that, for the purpose of main- taining the militant organization and the government which directs it, there are similarly established over citizens agencies which force them to labor more or less largely for public ends instead of private ends. And, simultaneously, there develops a further organization, still akin in its fundamental principle, which restrains individual activities in such wise that social safety shall not be endangered by the disorder consequent on imchecked pursuit of personal ends. So that this kind of social organization is distinguished from the other, as arising through conscious pursuit of public ends, in furtherance of which individual wills are constrained, first of all by the joint wills of the entire group, and afterward more definitely by the will of a regulative agency which the group evolves. Most clearly shall we perceive the contrast between these two kinds of organization on obseiwing that, while they are both instrumental to social welfare, they are instrumental in converse ways. That organi- zation shown us by the division of labor for industrial purposes exhib- its combined action ; but it is a combined action w^hich directly seeks and subserves the welfares of individuals, and indirectly subserves the welfare of society as a whole by pi'eserving individuals. Conversely, that kind of organization evolved for governmental and defensive pur- poses exhibits combined action ; but it is a combined action which directly seeks and subserves the welfare of the society as a whole, and indirectly subserves the welfares of individuals by preserving the society. Efforts for self-preservation by the units originate the one form of oi-ganization ; while efforts for self-preservation by the aggre- gate originate the other form of organization. In the one case there is conscious pursuit of private ends only ; and the correlative organization resulting from this pursuit of private ends, growing up unconsciously, is without coercive power. In the other case there is conscious pursuit of public ends ; and the correlative organization, consciously estab- lished, exercises coercion. Of these two kinds of cooperation and the structui'es effecting them, we are here concerned only with one. Political organization is to be understood as that part of social organization which consciously carries 148 THE POPULAR SCIENCE MONTHLY, on directive and restraining functions for public ends. It is true, as already hinted, and as we shall see presently, that the two kinds are mingled in various ways — that each ramifies through the other more or less according to their respective degrees of predominance. But the two are essentially different in origin and nature ; and for the present we must, so far as may be, limit our attention to the last. That the cooperation into which men have gradually risen secures to them benefits which could not be secured while, in their primitive state, they acted singly, and that, as an indispensable means to this cooperation, political organization has been, and is, advantageous, we shall see on contrasting the states of men who are not liolitically organized with the states of men who are politically organized in less or greater degrees. There are, indeed, conditions imder which as good an individual life is possible without political organization as with it. Where, as in the habitat of the Esquimaux, there are but few persons, and these very widely scattered ; where there is no war, probably because the physical impediments to it are great and the motives to it feeble ; and where circumstances make the occupations so i;niform that there is little scope for the division of labor — mutual dependence can have no place, and the arrangements which effect it are not needed. Recognizing this exceptional case, let us consider the cases which are not exceptional. The Digger Indians, " very few degrees removed from the orang- outang," who, scattered among the mountains of the Sierra Nevada, sheltering in holes and living on roots and vermin, " drag out a miser- able existence in a state of nature, amid the most loathsome and dis- gusting squalor," differ from the other divisions of the Shoshones by their entire lack of social organization. The river-haunting and plain- haunting divisions of the race, under some, though but slight, govern- mental control, lead more satisfactory lives. In South America the Chaco Indians, low in type as are the Diggers, and like them degraded and wretched in their lives, are similarly contrasted with the superior and more comfortable savages aroixnd them in being dissociated. Among the Bedouin tribes, the Sherarat are unlike the rest in being divided and subdivided into countless bands which have no common chief ; and they are described as being the most miserable of the Bedouins. More decided still is the contrast noted by Baker between certain adja- cent African peoples. Passing suddenly, he says, from the unclothed, ungoverned tribes — from the " wildest savagedom to semi-civilization " — we come in Unyoro to a country governed by " an unflinching des- pot," inflicting " death or torture " for " the most trivial offenses " ; but where they have developed administration, sub-governors, taxes, good clothing, arts, agriculture, architecture. So, too, concerning New Zealand when first discovered. Cook remarks that there seemed to POLITICAL ORGANIZATION IN GENERAL. 149 be greater prosperity and populousness in the regions subject to a king. These last cases introduce us to a further truth. Not only does that first step in political organization which places individuals under the control of a tribal chief bring the advantages gained by better cooperation, but such advantages are increased when minor political heads become subject to a major political head. As typifying the evils which are thereby avoided, I may name the fact that among the Belooches, whose tribes, unsubordinated to a general ruler, are con- stantly at war with one another, it is the habit to erect a small mud- tower in each field, where the possessor and his retainers guard his produce — a state of things allied to, but worse than, that of the High- land clans, with their strongholds for sheltering women and cattle from the inroads of their neighbors, in days when they were not under the control of a central power. The benefits derived from such wider control, whether of a simple head or of a compound head, were felt by the early Greeks when the Amphictyonic Council established the laws that " no Hellenic tribe is to lay the habitations of another level with the ground ; and from no Hellenic city is the water to be cut off during a siege." The good which results from that advance of political struc- ture which unites smaller communities into larger ones was shown in our own country when, by the Roman conquest, the incessant fights between tribes were stopped ; and again, in later days, when feudal nobles, becoming subject to a monarch, were debarred from private wars. Under its converse aspect, we see the same truth when, amid the anarchy which followed the collapse of the Carlovingian empire, princes and barons, resuming their independence, became active ene- mies to one another : their state being such that " when they were not at war they lived by open plunder." And the history of Europe has repeatedly, in many places and times, furnished kindred illus- trations. While political organization, as it extends itself throughout masses of increasing size, directly furthers welfare by removing that impedi- ment to cooperation which the antagonism of individuals and of tribes causes, it indirectly furthers it in another way. Nothing beyond a ru- dimentary division of labor can arise in a small social group. Before commodities can be multiplied in their kinds, there must be multiplier! kinds of producers ; and, before each commodity can be produced in the most economical way, the different stages in the production of it must be apportioned out among special hands. Nor is this all. Nei- ther the required complex combinations of individuals, nor the elabo- rate mechanical appliances which facilitate manufacture, can arise in the absence of a large community, generating a great demand. But though the advantages gained by cooperation presuppose politi- cal organization, this political organization necessitates disadvantages ; 150 THE POPULAR SCIENCE MONTHLY. and it is quite jiossible for these disadvantages to outweigh the advan- tages. The controlling structures have to be maintained, and the restraints they impose have to be borne ; and the evils inflicted by- taxation and by tyranny may become greater than the evils prevented. Where, as in the East, the rapacity of monarchs has sometimes gone to the extent of taking from cultivators so much of their produce as to have afterward to return part for seed, we see exemplified the truth that the agency which maintains order may cause miseries greater than the miseries caused by disorder. The state of Egyj^t under the Romans, who, on the native set of officials, superposed their own set, and who made drafts on the country's resources not for local adminis- tration only but also for imperial administration, furnishes an instance. Beyond the regular taxes there were demands for feeding and clothing the military, wherever quartered ; extra calls were continually made on the people for maintaining public works and subaltern agents ; men in office were themselves so impoverished by exactions that they " as- sumed dishonorable employments or became the slaves of persons in power ; gifts made to the government were soon converted into forced contributions ; and those who purchased immunities from extortions found them disregarded as soon as the sums asked had been received. More marked still were the curses following excessive development of political organization in Gaul during the decline of the Roman Empire : So numerous were the receivers in comparison with the payers, and so enor- mous the weight of taxation, that the laborer broke down, the plains became deserts, and woods grew where the plow had been. ... It were impossible to number the officials who were rained upon every province and town. , . . The crack of the lash and the cry of the tortured filled tlie air. The faithful slave was tortured for evidence against his master, tlie wife to depose against her husband, the son against his sire. . . . Not satisfied with the returns of the first enumerators, tliey sent a succession of others, who each swelled the valua- tion— as a proof of service done; and so the imposts went on increasing. Yet the number of cattle fell off, and the people died. Nevertheless, the survivors had to pay the taxes of the dead. And how literally in this case the benefits were exceeded by the mis- chiefs is shown by the remark that " they fear the enemy less than the tax-gatherer : the truth is, that they fly to the first to avoid the last. Hence, the one unanimous wish of the Roman populace, that it was their lot to live with the barbarian." In the same regions during later times the lesson was repeated. While internal peace and its blessings were achieved in mediaeval France as fast as feudal nobles became subordinate to the king — while the central power, as it grew stronger, put an end to that primitive j^ractice of a blood-revenge which wreaked itself on any relative of an offender, and made the " truce of God " a needful mitigation of the universal savagery ; yet from this extension of political organization there presently grew up evils as great or greater — multiplication of POLITICAL ORGANIZATION IN GENERAL. 151 taxes, forced loans, groundless confiscations, arbitrary fines, progressive debasements of coinage, and a universal corruption of justice conse- quent on the sale of offices : the results being that many people died by famine, some committed suicide, while others, deserting their homes, led a wandering life. And then, afterward, when the supreme ruler, becoming absolute, conti'olled social life in all its details, through an administrative system vast in extent and ramifications, with the gen- eral result that in less than two centuries the indirect taxation alone " crossed the enormous interval between eleven millions and three hun- dred and eleven millions," there came the national impoverishment and misery which resulted in the great Revoultion. Even the present time supplies kindred evidence, in sundry places. A voyage up the Nile shows every observer that the people are better off where they are remote from the center of government — where administrative agencies can not so easily reach them. Nor is it only under the barbaric Turk that this happens. Notwithstanding the boasted beneficence of our rule in India, the extra burdens and the complication of restraints it involves have the effect that the people find some of the adjacent countries preferable; the' ryots in sundry places are leaving their homes and settling in the territory of the Nizam and in Gwalior. Not only do those who are controlled suffer, from political organi- zation, evils which greatly deduct from, and sometimes exceed, the benefits. Numerous and rigid governmental restraints shackle those who imjjose them as well as those on whom they are imposed. The successive grades of ruling agents, severally coercing grades below, are themselves coerced by grades above ; and even the very highest ruling agent is enslaved by the system created for the preservation of his supremacy. In ancient Egypt the daily life of the king was mi- nutely regulated alike as to its hours, its occupations, its ceremonies ; so that, nominally all-powerful, he was really less free than a subject. It has been, and is, the same with other despotic monarchs. Till lately, in Japan, where the form of organization had become fixed, and where, from the highest to the lowest, the actions of life were prescribed in detail, the exercise of authority was so burdensome that voluntary resignation of it was frequent. Adams writes, "The custom of abdi- cation is common among all classes, from the Emperor down to his meanest subject." European states have examplified this reacting tyranny. " In the Byzantine palace," says Gibbon, "the Emperor was the first slave of the ceremonies he imposed." Concerning the tedious court life of Louis le Grand, Madame de Maintenon remarks : " Save those only who fill the highest stations, I know of none more unfor- tunate than those who envy them. If you could only form an idea of what it is ! " So that, while the satisfaction of men's personal wants is furthered both by the maintenance of order and by the formation of aggregate^ 152 THE POPULAR SCIENCE MONTHLY. large enough to permit extensive division of labor, it is hindered both by deductions, often very gx'eat, from the products of their actions, and by the restraints imposed on their actions, usually in excess of the needs. And political control indirectly entails evils on those who exercise it as well as on those over whom it is exercised. The stones composing a house can not be otherwise used until the house has been pulled down. If the stones are united by mortar, there must be extra trouble in destroying their present combination before they can be recombined. And if the miortar has had centuries in which to consolidate, the breaking up of the masses formed is a mat- ter of such difficulty that building with new materials becomes more economical than rebuilding with the old. I name these facts to illustrate the truth that any kind of arrange- ment stands in the way of rearrangement ; and that this must be true of organization, which is one kind of arrangement. When, during the evolution of a living body, its component substance, at first relatively homogeneous, has been transformed into a combination of heterogene- ous parts, there rfesults an obstacle, always great and often insuperable, to any considerable change of structure; the more elaborate and definite the structure the greater is the resistance it opposes to alteration. And this, which is conspicuously true of an individual organism, is true, if less conspicuously, of a social organism. Though a society, composed of discrete units, and not having had its type fixed by inheritance from countless like societies, is much more plastic, yet the same principle holds. As fast as its parts are differentiated — as fast as there arise classes, bodies of functionaries, established institutions — these, becom- ing coherent within themselves and with one another, resist such forces as tend to modify them. The conservatism of every long-settled in- stitution daily exemplifies this law. Be it in the antagonism of a Church to legislation interfering with its arrangements ; be it in the opposition of an army to abolition of the purchase system ; be it in the disfavor with which the legal profession at large has regarded law reform — we see that neither in their structures nor in their modes ■ of action are parts that have once been specialized easily changed. As it is true of a living body that its various acts have as their common end self-preservation, so is it true of its component organs that they severally tend to maintain themselves in their integrity. And, similarly, as it is true of a society that maintenance of its exist- ence is the aim of its combined actions, so it is true of its separate classes and systems of officials, or other specialized parts, that the dominant aim of each is to preserve itself. Not the function to be performed, but the sustentation of those who perform the function, becomes the object in view : the result being that when the function is needless, or even detrimental, the structure still preserves itself as long as it can. In early days the history of the Knights Templars POLITICAL ORGANIZATION IN GENERAL. 153 furnished an illustration of this tendency. Down to the present time we have before us the familiar instance of trade guilds in London, which, having ceased to perform their original functions, nevertheless jealously maintain themselves for no purpose but the gratification of their members. And the accounts given in "The Black-book," of the sinecures which survived up to recent times, yield multitudinous illustrations. The extent to which an organization resists reorganization we shall not fully appreciate until we observe that its resistance increases in a compound progi'ession. For, while each new part is an additional obstacle to change, the formation of it implies a deduction from the forces causing change. If, other things remaining the same, the po- litical structures of a society are further developed — if the existing institutions are extended or fresh ones set up — if, for directing social activities in greater detail, extra staffs of ofiicials are appointed, the simultaneous results are an increase in the aggregate of those who form the regulating part and a corresponding decrease in the aggre- gate of those who form the part regulated. In various ways all who compose the controlling and administrative organization become united with one another and separated from the rest. Whatever be their particular duties, they are similarly related to the minor and major governing centers of their departments, and, through them, to the supreme governing center ; and are habituated to like sentiments and ideas respecting the set of institutions in which they are incorporated. Receiving their subsistence through the national revenue, they tend toward kindred views and feelings respecting the raising of such reve- nue. Whatever jealousies there may be between their divisions, are overridden by sympathy when any one division has its existence or privileges endangered, since the interference with one division may spread to others. Moreover, they all stand in like relations to the rest of the community, whose actions are in one way or other superintended by them ; and hence are led into kindred views respecting the need for such superintendence and the propriety of submitting to it. No matter what their previous political opinions may have been, they can not become public agents of any kind without being biased toward opinions congruous with their functions. So that, inevitably, each further growth of the instrumentalities which control, or administer, or inspect, or in any way direct social forces, increases the impediment to future modifications, both positively, by strengthening that which has to be modified, and negatively, by weakening the remainder ; until at length the rigidity becomes so great that change is impossible and the type becomes fixed. Nor does each further development of the regulative organization increase the obstacles to change only by relatively increasing the power of those who, as regulators, maintain the established order, and decreasing the power of those who, as the regulated, have not the same 154 THE POPULAR SCIENCE MONTHLY. direct interests in maintaining it. For the ideas and sentiments of a community as a whole progressively adapt themselves to the regime familiar from childhood, in such wise that it comes to be looked upon as natural, and as the only thing possible. In proportion as public agencies occupy a larger space in daily experience, leaving but a smaller space for other agencies, there comes a greater tendency to think of public control as everywhere needful, and a less ability to conceive of activities as otherwise controlled. At the same time the sentiments, adjusted by habit to the regulative machinery, become enlisted on its behalf, and adverse to the thought of a vacancy to be made by its absence. In brief, the general law, that the social organism and its units act and react in such ways as to become congruous, implies that every further extension of political organization increases the obstacle to reorganization, not only by increasing the strength of the regula- tive part and decreasing the strength of the part regulated, but also by producing in citizens thoughts and feelings in harmony with the resulting structure, and out of harmony with anything substantially different. Both France and Germany furnish examples of this truth. M. Comte, while looking forward to an industrial state, was so swayed by the ideas and sentiments appropriate to the French form of society, that his scheme of organization for the industrial state prescribes its arrangements with a definiteness and detail charactei'istic of the mili- tant type, and utterly at variance with the industrial type. Indeed, he had a profound aversion to that individualism which is a product of industrial life and gives the character to industrial institutions. So, too, in Germany, we see that the Socialist party, who are regarded and who regard themselves as wishing to entirely reorganize society, are so incapable of really thinking away from the social type under which they have been born and nurtured, that their proposed social system is in essence nothing else than a new form of the system they would destroy. It is a system under which life and labor are to be arranged and superintended by public instrumentalities, omnipresent like those which already exist and no less coercive, the individual having his life even more regulated for him than now. "While, then, on the one hand, in the absence of settled arrange- ments, there can not be cooperation, yet cooperation of a higher kind is hindered by the arrangements which facilitate cooperation of a lower kind. Though, without some established relations among parts, there can be no combined actions, yet, the more extensive and elaborate such relations grow, the more difficult does it become to make an improved combination of actions. There is an increase of the forces which tend to fix, and a decrease of the forces which tend to unfix ; until the fully-structured social organism, like fully-structured individ- ual organism, becomes no longer adaptable. In a living animal, formed as it is of aggregated units originally POLITICAL ORGANIZATION IN GENERAL. 155 ■ like in kind, the progress of organization implies, not only that the units composing each differentiated part severally maintain their posi- tions, but also that their progeny succeed to those positions. Bile- cells which, while performing their functions, grow and give origin to new bile-cells, are, when they decay and disappear, replaced by these : the cells descending from them do not migrate to the kidneys, or the muscles, or the nervous centers, to join in the performance of their duties. And, evidently, unless the specialized units each organ is made of gave origin to units similarly specialized, which remained in the same place, there could be none of those settled relations among parts which characterize the organism and fit it for its particular mode of life. In a society, also, fixity of structure is favored by the transmission of positions and functions through successive generations. The main- tenance of those class-divisions which arise as political organization advances implies the inheritance of a rank and a place in each class. Obviously, in proportion as the difficulty of rising from one grade into another is great, the social grades become settled in their relations. The like happens with those subdivisions of classes which, in some societies, constitute castes, and in other societies are partially exem- plified by guilds. Where custom or law" compels the sons of each trader to follow his father's occupation, there result, among the struc- tures carrying on production and distribution, obstacles to change analogous to those which result in the regulative structures from im- passable divisions of ranks. India shows this in an extreme degree ; and in a less degree it was shown by the craft-guilds of early days in England, Avhich facilitated adoption of a craft by the children of those engaged in it, and hindered adoption of it by others. Thus we may call inheritance of position and function the principle of fixity in social organization. There is another way in which succession by inheritance, whether to class-position or to occupation, conduces to stability. It secures su- premacy of the elder ; and supremacy of the elder tends toward main- tenance of the established order. A system under which a chief-ruler, sub-ruler, head of a clan or house, official, or any person having the power given by rank or property, has his place filled up at death by a descendant, in conformity with some accepted rule of succession, is a system under which, by implication, the young, and even the middle- aged, are excluded from the conduct of affairs. So, too, where an industrial system is such that the son, habitually brought up to his father's business, succeeds to his position when he dies, it follows in like manner that the regulative power of the elder over the processes of production and distribution is scarcely at all qualified by the power of the younger. Now, it is a truth daily exemplified that increasing rigidity of organization, necessitated by the process of evolution, pro- duces in age an increasing strength of habit and aversion to change. 156 THE POPULAR SCIENCE MONTHLY, Hence it results that succession to place and function by inheritance, having as its necessary concomitant the monopoly of power by the eldest, involves a prevailing conservatism ; and this further insures maintenance of things as they are. Conversely, social change is facile in proportion as men's positions and functions are determinable by personal qualities. If, not being pre- vented by law or custom, members of one rank establish themselves in another rank, they in so far directly break the division between the ranks ; and they indirectly weaken the division by preserving their family relations with the first, and forming new ones with the second ; while, further, the ideas and sentiments prevailing in the two ranks, previously more or less different, are made to qualify one another and to modify the characters of their members. Similarly, if between sub- divisions of the producing and distributing classes there are no bar- riers to migration, then, in proportion as migrations are numerous, influences physical and mental, following interfusion, tend to alter the natures of their units ; at the same time that they perpetually check the establishment of differences of nature, caused by differences of function. Such transpositions of individuals between class and class, or group and group, must, on the average, however, be determined by the fitnesses of the individuals for their new places and duties. Intru- sions will ordinarily succeed only where the intruding citizens have more than usual aptitudes for the businesses they undertake. Those who desert their original social positions and occupations are at a dis- advantage in the competition with those whose positions and occupa- tions they assume ; and they can overcome this disadvantage only by force of some superiority in respect of the occupations in which they compete. This leaving of men to have their careers determined by their efficiencies we may therefore call the principle of change in social organization. As we saw that succession by inheritance conduces in a secondary way to stability, by keeping the places of authority in the hands of those who by age are made most averse to new practices, so here, con- versely, we may see that succession by efficiency conduces in a sec- ondary way to change. Both positively and negatively the possession of power by the young facilitates innovation. While the energies are overflowing, little fear is felt of those obstacles to improvement and evils it may bring, which, to those of flagging energies, look formi- dable ; and at the same time the greater imaginativeness that goes along with higher vitality, joined with a smaller strength of habit, facilitates acceptance of fresh ideas and adoption of untried methods. Since, then, where the various social positions come to be respectively filled by those who are experimentally proved to be the fittest, the rela- tively young are permitted to exercise authority, it results that suc- cession by efficiency furthers change in social organization, indirectly as well as directly. POLITICAL ORGANIZATION IN GENERAL. 157 Contrasting the two, we thus see that, while the acquirement of function by inheritance conduces to rigidity of structure, the acquire- ment of function by efficiency conduces to plasticity of structure. Succession by descent favors the maintenance of that which exists. Succession by fitness favors transformation, and makes possible some- thing better. As previously pointed out, "complication of structure accompa- nies increase of mass," in social organisms as in individual organisms. When small societies are compounded into a larger society, the con- trolling agencies needed in the several component societies must be subordinated to a central controlling agency : new structures are re- quired, Recompounding necessitates a kindred further complexity in the governmental arrangements ; and at each of such stages of increase all other arrangements must become more complicated. As Duruy re- marks : " By becoming a world in place of a town, Rome could not conserve institutions established for a single city and a small territory. . . . How was it possible for sixty millions of provincials to enter the narrow and rigid circle of provincial institutions ? " The like holds where, instead of extension of territory, there is only increase of popu- lation. The contrast between the simple administrative system which sufficed in old English times for a million people and the complex administrative system at present needed for many millions sufficiently indicates this general truth. But now, mark a corollary. If, on the one hand, further growth implies more complex structure, on the other hand changeableness of structure is a condition to further growth ; and, conversely, unchange- ableness of structure is a concomitant of arrested growth. Like the correlative law just noted, this law is clearly seen in individual organ- isms. On the one hand, the transition from the small immature form to the large mature form, in a living creature, implies that not the whole only, but all the parts have to be changed in their sizes and connections ; every detail of every organ has to be modified ; and this implies the retention of plasticity. On the other hand, w^hen, on ap- proaching maturity, the structures are assuming their final arrange- ment, their increasing definiteness and firmness constitute an increasing impediment to growth : the unbuilding and rebuilding required before there can be the needful readjustment become more and more difficult. So is it with a society. Augmentation of its mass necessitates change of the preexisting structures, either by incorporation of the increment with them, or by their extension through it. Every elaboration and further settlement of the structures presents an additional obstacle to this ; and, when rigidity is reached, such modifications of them as increase of mass would involve are impossible, and increase is pre- vented. Hence a significant relation between the structure of a society and 158 THE POPULAR SCIENCE MONTHLY. its growth. While each increment of growth is aided by an appro- priate organization, yet this organization, being inappropriate to a greater mass, becomes thereafter an impediment to further growth. Whence it follows that organization in excess of need prevents the attainment of that larger size and accompanying higher organization which might else have arisen. To aid our interpretations of the special facts presently to be dealt wath, we must keep in mind the foregoing general facts. They may be summed up as follows : Cooperation is made possible by society, and makes society possible. It presupposes associated men, and men remain associated because of the benefits association yields them. But there can not be concerted actions without agencies by which actions are in some way adjusted in their times, amounts, and kinds ; and the actions can not be of various kinds without the coOperators undertaking different duties. That is to say, the cooperators must fall into some kind of organization, either voluntarily or involun- tarily. Tlie organization which cooperation implies is of two kinds, distinct in origin and nature. The one, arising directly from the pursuit of individual ends and indirectly conducing to social welfare, develops unconsciously and is non-coercive. The other, arising directly from the pursuit of social ends and indirectly conducing to individual wel- fare, develops consciously and is coercive. While, by making cooperation possible, political organization achieves benefits, deductions from the benefits are entailed by such organization. Maintenance of it is costly ; and the cost may become a greater evil than the evils escaped. It necessarily imposes restraints ; and these restraints may become so extreme that anarchy, with all its miseries, is preferable. Organization as it becomes established is an obstacle to reorganiza- tion. Both by the inertia of position, and by the cohesion gradually established among them, the units of the structures formed oj^pose change. Self-sustentation is the primary aim of each part as of the whole ; and hence parts once formed tend to continue, whether they are or are not useful. Moreover, each addition to the regulative structures implying, other things equal, a simultaneous deduction from the remainder of the society which is regulated, it results that, while the obstacles to change are increased, the forces causing change are decreased. Maintenance of a society's organization implies that the imits form- ing its component structures shall severally be replaced as they die. Sta- bility is favored if the vacancies they leave are filled without dispute by descendants ; while change is favored if the vacancies are filled by those who are experimentally proved to be best fitted for them. Sue- SCIENCE AND CULTURE. 159 cession by inheritance is thus the principle of social rigidity ; while succession by efficiency is the principle of social plasticity. Though to make cooperation possible, and therefore to facilitate social growth, there must be organization, yet the organization formed impedes further growth ; since further growth implies reorganization, which the existing organization resists. So that while, at each stage, better immediate results may be achieved by completing organization, they must be at the exj)ense of better ultimate results. These are to be achieved by carrying organi- zation at each stage no further than is needful for the orderly carrying on of social actions. -♦♦♦- SCIENCE AND CULTURE.* By Professor T. H. HUXLEY, F. E. S. SIX years ago, as some of my present hearers may remember, I had the privilege of addi'essing a large assemblage of the inhabitants of this city, who had gathered together to do honor to the memory of their famous townsman, Joseph Priestley ; and, if any satisfaction attaches to posthumous glory, we may hope that the manes of the burned-out philosopher were then finally ajjpeased. No man, however, who is endowed with a fair share of common sense and not more than a fair share of vanity, will identify either contemj)orary or posthumous fame with the highest good ; and Priestley's life leaves no doubt that he, at any rate, set a much higher value upon the advancement of knowledge and the promotion of that freedom of thought which is at once the cause and the consequence of intellectual progress. Hence I am disposed to think that, if Priestley could be among us to-day, the occasion of our meeting would afford him even greater pleasui'e than the proceedings which celebrated the centenary of his chief discovery. The kindly heart would be moved, the high sense of social duty would be satisfied, by the spectacle of well-earned wealth, neither squandered in tawdry luxury and vainglorious show, nor scattered with the careless charity which blesses neither him that gives nor him that takes, but expended in the execution of a well-con- sidered plan for the aid of present and future generations of those who are willing to help themselves. We shall all be of one mind thus far. But it is needful to share Priestley's keen interest in physical science ; to have learned, as he had learned, the value of scientific training in fields of inquiry appar- ently far remote from physical science ; to appreciate, as he would * An address delivered on the occasion of the opening of Sir Josiah Mason's Science College, at Birmingham, England, on October 1, 1880. i6o THE POPULAR SCIENCE MONTHLY. have appreciated, the value of the noble gift which Sir Josiah Mason has bestowed upon the inhabitants of the Midland district. For us children of the nineteenth century, however, the establishment of a college under the conditions of Sir Josiah Mason's trust has a signifi- cance apart from any which it could have possessed a hundred years ago. It appears to be an indication that we are reaching the crisis of the battle, or rather of the long series of battles, which have been fought over education in a campaign which began long before Priest- ley's time, and will probably not be finished just yet. In the last century, the combatants were the champions of ancient lit- erature on the one side, and those of modern literature on the other; but, some thirty years ago, the contest became complicated by the appear- ance of a third army, ranged round the banner of Physical Science. I am not aware that any one has authority to speak in the name of this new host. For it must be admitted to be somewhat of a guerrilla force, composed largely of irregulars, each of whom fights pretty much for his own hand. But the impressions of a full private, who has seen a good deal of service in the ranks, respecting the present jjosition of affairs and the conditions of a permanent peace, may not be devoid of interest ; and I do not know that I could make a better use of the pres- ent opportunity than by laying them before you. From the time that the first suggestion to introduce physical sci- ence into ordinary education was timidly whispered, until now, the advocates of scientific education have met with opposition of two kinds. On the one hand they have been pooh-poohed by the men of business who pride themselves on being the representatives of practi- cality, while on the other hand they have been excommunicated by the classical scholars, in their capacity of Levites in charge of the ark of culture and monopolists of liberal education. The practical men believed that the idol Avhom they worship — rule of thumb — has been the source of the past prosperity, and will suflice for the future welfare of the arts and manufactures. They were of opinion that science is speculative rubbish ; that theory and practice have nothing to do with one another ; and that the scientific habit of mind is an impediment rather than an aid in the conduct of ordinary affairs. I have used the past tense in speaking of the practical men — for, although they were very formidable thirty years ago, I am not sure that the pure species has not been extirpated. In fact, so far as mere argument goes, they have been subjected to such z.feu cfenfer that it is a miracle if they have escaped. But I have remarked that your typical practical man has an unexpected resemblance to one of Milton's angels. His spiritual wounds, such as are inflicted by logical weapons, may be as deep as a well and as wide as a church-door, but, beyond shedding a few drops of ichor, celestial or otherwise, he is no whit the worse. So, if any of these opponents be left, I will not waste time in vain repeti- tion of the demonstrative evidence of the practical value of science ; SCIENCE AND CULTURE. 161 but, knowing that a parable will sometimes penetrate where syllogisms fail to effect an entrance, I will offer a story for their consideration. Once upon a time, a boy, with nothing to depend upon but his own vigorous nature, was thrown into the thick of the struggle for exist- ence in the midst of a great manufacturing population. He seems to have had a hard fight, inasmuch as, by the time he was thirty years of age, his total disposable funds amounted to twenty pounds. Neverthe- less, middle life found him giving proof of his comprehension of the practical problems he had been roughly called upon to solve, by a career of remarkable j^rosperity. Finally, having reached old age with its well-earned surroundings of " honor, troops of friends," the hero of my story bethought himself of those who were making a like start in life, and how he could stretch out a helping hand to them. After long and anxious reflection this successful practical man of business could devise nothing better than to provide them Avith the means of obtaining " sound, extensive, and practical scientific knowledge." And he de- voted a large part of his wealth, and five years of incessant work, to this end. I need not point the moral of a tale which, as the solid and spacious fabric of the Scientific College assures us, is no fable, nor can anything Avhich I could say intensify the force of this practical answer to practical objections. We may take it for granted then, that, in the opinion of those best qualified to judge, the diffusion of thorough scientific education is an absolutely essential condition of industrial progress, and that the col- lege opened to-day will confer an inestimable boon upon those whose livelihood is to be gained by. the practice of the arts and manufactures of the district. The only question worth discussion is, whether the conditions, under which the work of the college is to be carried out, are such as to give it the best possible chance of achieving permanent success. Sir Josiah Mason, without doubt most wisely, has left very large freedom of action to the trustees, to whom he projDoses ultimately to commit the administration of the college, so that they may be able to adjust its arrangements in accordance with the changing conditions of the future. But, with respect to three points, he has laid most ex- plicit injunctions upon both administrators and teachers. Party poli- tics are forbidden to enter into the minds of either, so far as the work of the college is concerned ; theology is as sternly banished from its precincts ; and, finally, it is especially declared that the college shall make no provision for " mere literary instruction and education." It does not concern me at present to dwell upon the first two in- junctions any longer than may be needful to express my full convic- tion of their wisdom. But the third prohibition brings us face to face with those other opponents of scientific education who are by no means in the moribund condition of the practical man, but alive, alert, and formidable. It is not impossible that we shall hear this express VOL. xvin. — 11 i62 THE POPULAR SCIENCE MONTHLY. exclusion of " literary instruction and education " from a college which, nevertheless, professes to give a high and efficient education, sharply criticised. Certainly the time was that the Levites of culture would have sounded their trumpets against its walls as against an edu- cational Jericho. How often have we not been told that the study of physical science is incompetent to confer culture ; that it touches none of the higher problems of life ; and, what is worse, that the con- tinual devotion to scientific studies tends to generate a narrow and bigoted belief in the applicability of scientific methods to the search after truth of all kinds ! How frequently one has reason to observe that no reply to a troublesome argument tells so well as calling its author a " mere scientific specialist " ! And, as I am afraid it is not permissible to speak of this form of opposition to scientific education in the past tense, may we not expect to be told that this, not only omission, but prohibition of " mere literary instruction and education " is a patent example of scientific narrow-mindedness ? I am not acquainted with Sir Josiah Mason's reasons for the action which he has taken ; but, if, as I apprehend is the case, he refers to the ordinary classical course of our schools and universities by the name of " mere literary instruction and education," I venture to offer sundry reasons of my own in support of that action. For I hold very strongly by two convictions : The first is, that neither the discipline nor the subject-matter of classical education is of such direct value to the student of physical science as to justify the expenditure of valu- able time upon either ; and the second is, that, for the j)urpose of attaining real culture, an exclusively scientific education is at least as i effectual as an exclusively literary education. I need hardly point out ' to you that these opinions, especially the latter, are diametrically op- posed to those of the great majority of educated Englishmen, influ- enced as they are by school and university traditions. In their belief culture is obtainable only by a liberal education, and a liberal educa- tion is synonymous not merely with education and instruction in litera- ture, but in one particular form of literature, namely, that of Greek and Roman antiquity. They hold that the man who has learned Latin' and Greek, however little, is educated ; while he who is versed in : other branches of knowledge, however deeply, is a more or less re- spectable specialist, rot admissible into the cultured caste. The stamp of the educated man, the university degree, is not for him. I am too well acquainted with the generous catholicity of spirit, the true sympathy with scientific thought, which pervades the writings of our chief apostle of culture to identify him with these opinions ; and yet one may cull fi'om one and another of those epistles to the Philistines, which so much delight all who do not answer to that name, sentences which lend them some support. Mr. Arnold tells us that the meaning of culture is "to know the best that has been thought and said in the world." It is the criticism of life contained SCIENCE AND CULTURE. 163 in literature. That criticism regards " Europe as being for intellec- tual and spiritual purposes one great confederation, bound to a joint action and working to a common result ; and whose members have for their common outfit a knowledge of Greek, Roman, and Eastern antiquity, and of one another. Special local and temporary advan- tages being put out of account, that modern nation will in the intel- lectual and spiritual sphere make most progress which most thorough- ly carries out this programme. And what is that but saying that we, too, all of us as individuals, the more thoroughly we carry it out shall make the more progress ! " We have here to deal with two distinct propositions : The first, that a ci'iticism of life is the essence of culture ; the second, that litera- ture contains the materials which suffice for the construction of such a criticism. I think that we must all assent to the first proposition. For culture certainly means something quite different from learning or technical skill. It implies the possession of an ideal, and the habit of critically estimating the value of things by comparison with a theo- retic standard. Perfect culture should supply a complete theory of life, based upon a clear knowledge alike of its possibilities and of its limitations. But we may agree to all this, and yet strongly dissent from the assumption that literature alone is competent to supply this knowledge. After having learned all that Greek, Roman, and East- ern antiquity have thought and said, and all that modern literatures have to tell us, it is not self-evident that we have laid a sufficiently broad and deep foundation for that criticism of life which constitutes culture. Indeed, to any one acquainted with the scope of physical science, it is not at all evident. Considering progress only in the " intellectual and spiritual sphere," I find myself wholly unable to admit that either nations or individuals will really advance if their common outfit draws nothing from the stores of physical science. I should say that an army without weapons of precision, and with no particular base of operations, might more hopefully enter upon a campaign on the Rhine than a man, devoid of a knowledge of what physical science has done in the last century, upon the criticism of life. "When a biologist meets with an anomaly, he instinctively turns to the study of development to clear it up. The rationale of contradic- tory opinions may with equal confidence be sought in history. It is, happily, no new thing that Englishmen shotld employ their wealth in building and endowing institutions for educational purposes. But, five or six hundred years ago, deeds of foundation expressed or implied conditions as nearly as possible contrary to those which have been thought expedient by Sir Josiah Mason. That is to say, physical science was practically ignored, while a certain literary training was enjoined as a means to the acquirement of knowledge which was essen- tially theological. The reason of this singular contradiction between 164 THE POPULAR SCIENCE MONTHLY. the actions of men alike animated by a strong and disinterested desire to promote the welfare of their fellows is easily discovered. At that time, in fact, if any one desired knowledge beyond such as could be obtained by his own observation, or by common conversation, his first necessity was to learn the Latin language, inasmuch as all the higher knowledsfe of the Western world was contained in works written in that language. Hence Latin grammar, with logic and rhetoric, studied through Latin, were the fundamentals of education. With respect to the substance of the knowledge imparted through this channel, the Jewish and Christian Scriptures, as interpreted and supplemented by the Romish Church, were held to contain a complete and infallibly true body of information. Theological dicta were, to the thinkers of those days, that which the axioms and definitions of Euclid are to the geometers of these. The business of the philosophers of the middle ages was to deduce, from the data furnished by the theologians, conclusions in accordance with ecclesiastical decrees. They were allowed the high privilege of showing, by logical process, how and why that which the Church said was true must be true. And, if their demonstrations fell short of or exceeded this limit, the Church was maternally ready to check their aberrations, if need be, by the help of the secular arm. Between the two our ancestors were furnished with a compact and complete criticism of life. They were told how the world began and how it would end ; they learned that all material existence was but a base and insignificant blot upon the fair face of the spiritual world, and that nature was, to all intents and purposes, the playground of the devil ; they learned that the earth is the center of the visible universe, and that man is the cynosure of things terrestrial ; and more especially was it inculcated that the course of nature had no fixed order, but that it could be and constantly was altered by the agency of innumerable spiritual beings, good and bad, according as they were moved by the deeds and prayers of men. The sum and substance of the whole doc- trine was, to produce the conviction that the only thing really worth knowing in this world was how to secure that place in a better which, under certain conditions, the Church promised. Our ancestors had a living belief in this theory of life, and acted upon it in their dealings with education, as in all other matters. Culture meant saintliness — after the fashion of the saints of those days ; the education that led to it was, of necessity, theological ; and the way to theology lay through Latin. That the study of nature — further than was requisite for the satis- faction of every-day wants — should have any bearing on human life was far from the thoughts of men thus trained. Indeed, as nature had been cursed for man's sake, it was an obvious conclusion that those who meddled with natm-e were likely to come into pretty close contact with Satan. And if any bom scientific investigator followed his in- SCIENCE AND CULTURE. 165 stincts he might safely reckon upon earning the reputation, and proba- bly upon suffering the fate of a sorcerer. Had the "Western world been left to itself in Chinese isolation, there is no saying how long this state of things might have endured. But, happily, it was not left to itself. Even earlier than the thirteenth century, the development of Moorish civilization in Spain and the great movement of the Crusades had introduced the leaven which, from that day to this, has never ceased to work. At first through the interme- diation of Arabic translations, afterward by the study of the origi- nals, the western nations of Europe became acquainted with the writ- ings of the ancient jjhilosophers and poets, and in time with the whole of the vast literature of antiquity. Whatever there was of high intellectual aspiration or dominant capacity in Italy, France, Germany, and England, spent itself for centuries in taking possession of the rich inheritance left by the dead civilizations of Greece and Rome. Marvelously aided by the inven- tion of printing, classical learning spread and flourished. Those who possessed it prided themselves on having attained the highest culture then within the reach of mankind. And justly. For, saving Dante on his solitary pinnacle, there was no figure in modern literature, at the time of the Renascence, to com- pare with the men of antiquity ; there was no art to compete with their sculpture ; there was no physical science but that which Greece had created. Above all, there was no other example of perfect intel- lectual freedom — of the unhesitating acceptance of reason as the sole guide to truth and arbiter of conduct. The new learning necessarily soon exerted a profound influence upon education. The language of the monks and schoolmen seemed little better than gibberish to scholars fresh from Virgil and Cicero, and the study of Latin was placed upon a new foundation. Moreover, Latin itself ceased to afford the sole key to knowledge. The student who sought the highest thought of antiquity found only a second- hand reflection of it in Roman literature, and turned his face to the full light of the Greeks. And after a battle, not altogether dissimilar to that which is at present being fought over the teaching of physical science, the study of Greek was recognized as an essential element of all higher education. Thus the Humanists, as they were called, won the day ; and the great reform which they effected was of incalculable service to man- kind. But the Nemesis of all reformers is finality ; and the reformers of education, like those of religion, fell into the profound but common error of mistaking the beginning for the end of the work of reforma- tion. The representatives of the Humanists, in the nineteenth cen- tury, take their stand upon classical education as the sole avenue to culture, as firmly as if we were still in the age of Renascence. Yet surely the present intellectual relations of the modern and the ancient i66 THE POPULAR SCIENCE MONTHLY. worlds are profoundly diJfferent from those which obtained three cen- turies ago. Leaving aside the existence of a great and characteris- tically modern literature, of modern painting, and, especially of modern music, there is one feature of the present state of the civilized world which separates it more widely from the Renascence than the Renas- cence was separated from the middle ages. This distinctive charac- ter of our own times lies in the vast and constantly increasing part which is played by Natural Knowledge. Not only is our daily life shaped by it, not only does the prosperity of millions of men depend upon it, but our whole theory of life has long been influenced, con- sciously or unconsciously, by the general concej^tions of the universe which have been forced upon us by physical science. In fact, the most elementary acquaintance with the results of scientific investiga- tion shows us that they offer a broad and striking contradiction to the oj)inions so implicitly credited and taught in the middle ages. The notions of the beginning and the end of the world entertained by our forefathers are no longer credible. It is very certain that the earth is not the chief body in the material universe, and that the world is not subordinated to man's use. It is even more certain that nature is the expression of a definite order with which nothing inter- feres, and that the chief business of mankind is to learn that order and govern themselves accordingly. Moreover, this scientific " criticism of life " presents itself to us with different credentials from any other. It appeals not to authority, nor to what anybody may have thought or said, but to nature. It admits that all our interpretations of natural fact are more or less imperfect and symbolic, and bids the learner seek for truth not among words but among things. It warns us that the assertion which outstrips evidence is not only a blunder but a crime. The purely classical education advocated by the representatives of the Humanists in our day gives no inkling of all this. A man may be a better scholar than Erasmus, and know no more of the chief causes of the present intellectual fermentation than Erasmus did. Scholarly and pious persons, worthy of all respect, favor us with allocutions upon the sadness of the antagonism of Science to their mediaeval way of thinking, which betray an ignorance of the first principles of scien- tific investigation, an incapacity for understanding what a man of sci- ence means by veracity, and an unconsciousness of the weight of estab- lished scientific truths, which is almost comical. There is no great force in the tu quoque argument, or else the ad- vocates of scientific education might fairly enough retort upon the modern Humanists that they may be learned specialists, but that they possess no such sound foundation for a criticism of life as deserves the name of culture. And, indeed, if we were disposed to be cruel we might urge that the Humanists have brought this reproach i;pon them- selves, not because they are too full of the spirit of the ancient Greek, but because they lack it. SCIENCE AND CULTURE. 167 The period of the Renascence is commonly called that of the " Re- vival of Letters," as if the influences then brought to bear upon the mind of western Europe had been wholly exhausted in the field of literature. I think it is very commonly forgotten that the revival of science, effected by the same agency, although less conspicuous, was not less momentous. In fact, the few and scattered students of Nature of that day picked up the clew to her secrets exactly as it fell from the hands of the Greeks a thousand years before. The foundations of mathematics were so well laid by them that our children learn their geometry from a book written for the schools of Alexandria two thou- sand years ago. Modern astronomy is the natural continuation and development of the work of Hipj)archus and of Ptolemy ; modern physics of that of Democritus and Archimedes ; it was long before modern biological science outgrew the knowledge bequeathed to us by Aristotle, Theophrastus, and Galen. We can not know all the best thoughts and sayings of the Greeks unless we know what they thought about natural phenomena. We can not fully apprehend their criticism of life unless we understand the extent to which that criticism was affected by scientific concep- tions. We falsely pretend to be the inheritors of their culture, unless we are penetrated, as the best minds among them were, with an un- hesitating faith that the free employment of reason, in accordance with scientific method, is the sole guide to truth. Thus I venture to think that the pretensions of our modern Hu- manists to the possession of the monopoly of culture and to the ex- clusive inheritance of the spirit of antiquity must be abated, if not abandoned. But I should be very sorry that anything I have said should be taken to imply a desire on my part to depreciate the value of classical education, as it might be and as it sometimes is. The native capacities of mankind vary no less than their opportunities ; and, while culture is one, the road by which one man may best reach it is widely different from that which is most advantageous to an- other. Again, while scientific education is yet inchoate and tentative, classical education is thoroughly well organized upon the pi-actical experience of generations of teachers. So that, given ample time for learning and destination for ordinary life, or for a literary career, I do not think that a young Englishman in search of culture can do better than follow the course usually marked out for him, supplementing its deficiencies by his own efforts. But for those who mean to make science their serious occupation ; or who intend to follow the profession of medicine ; or who have to enter early uj^on the business of life — for all these, in my opinion, classical ediication is a mistake ; and it is for that reason that I am glad to see " mere literary education and instruction " shut out from the curriculum of Sir Josiah Mason's College, seeing that its inclusion would probably lead to the introduction of the ordinary smattering of i68 THE POPULAR SCIENCE MONTHLY. Latin and Greek, Nevertheless, I am the last person to question the importance of genuine literary education, or to suppose that intellectual culture can be complete without it. An exclusively scientific training will bring about a mental twist as surely as an exclusive literary train- ing. The value of the cargo does not compensate for a ship's being out of trim ; and I should be very sorry to think that the Scientific College Avould turn out none but lop-sided men. There is no need, however that such a catastrophe should happen. Instruction in Eng- lish, French, and German is provided, and thus the three greatest lit- eratures of the modern world are made accessible to the student. French and German, and especially the latter language, are absolutely indispensable to those who desire full knowledge in any department of science. But, even supposing that the knowledge of these languages acquired is not more than sufiicient for purely scientific purposes, every Englishman has, in his native tongue, an almost perfect instrument of literary expression ; and, in his own literature, models of every kind of literary excellence. If an Englishman can not get literary culture out of his Bible, his Shakespeare, his Milton, neither, in my belief, will the profoundest study of Homer and Sophocles, Virgil and Horace, give it to him. Thus, since the constitution of the college makes sufiicient provi- sion for literary as well as for scientific education, and since artistic instruction is also contemplated, it seems to me that a fairly complete culture is oflrered to all who are willing to take advantage of it. But I am not sure but that at this point the "practical" man, scotched but not slain, may ask what all this talk about culture has to do with an institution whose object is defined to be "to promote the prosperity of the manufactures and the industry of the country," He may suggest that what is wanted for this end is not culture, nor even a purely scientific discipline, but simply a knowledge of applied science. I often wish that this phrase, " applied science," had never been invent- ed. For it suggests that there is a sort of scientific knowledge of direct practical use, which can be studied apart from another sort of scientific knowledge, which is of no practical utility, and which is termed " pure science." But there is no more complete fallacy than this. What people call applied science is nothing but the application of pure science to particular classes of problems. It consists of de- ductions from those general principles, established by reasoning and observation, which constitute pure science. No one can safely make these deductions until he has a firm grasp of the principles ; and he can obtain that grasp only by personal experience of the processes of observation and of reasoning on which they are founded. Almost all the processes employed in the arts and manufactures fall within the range either of physics or of chemistry. In order to improve them, one must thoroughly understand them ; and no one has a chance of really understanding them who has not obtained that SCIENCE AND CULTURE. 169 mastery of principles and that habit of dealing with facts which is given by long-continued and well-directed purely scientific training in the physical and the chemical laboratory. So that there really is no question as to the necessity of purely scientific discipline, even if the work of the college were limited by the narrowest interpretation of its stated aims. And, as to the desirableness of a wider culture than that yielded by science alone, it is to be recollected that the improvement of manufacturing processes is only one of the conditions which con- tribute to the prosperity of industry. Industry is a means and not an end ; and mankind work only to get something which they want. What that something is depends partly on their innate, and partly on their acquired, desires. If the wealth resulting from prosperous in- dustry is to be spent upon the gratification of unworthy desires, if the inci-easing perfection of manufacturing processes is to be accom- panied by an increasing debasement of those who carry them on, I do not see the good of industry and prosperity. Now, it is perfectly true that men's views of what is desirable depend upon their characters ; and that the innate proclivities to which we give that name are not touched by any amount of instruction. But it does not follow that even mere intellectual education may not, to an indefinite extent, modify the practical manifestation of the char- acter of men in their actions, by supplying them with motives unknown to the ignorant. A pleasure-loving character will have pleasure of some sort ; but, if you give him the choice, he may prefer pleasures which do not degrade him to those which do. And this choice is offered to every man, who possesses in literary or artistic culture a never-failing source of pleasures, which are neither withered by age, nor staled by custom, nor embittered in the recollection by the pangs of self-reproach. If the institution opened to-day fulfills the intention of its founder, the picked intelligences among all classes of the population of this district will pass through it. No child born in Birmingham, hence- forward, if he have the capacity to profit by the opportunities offered to him first in the primary and other schools, and afterward in the Scientific College, need fail to obtain, not merely the instruction, but the culture most appropriate to the conditions of his life. Within these walls, the future employer and the future artisan may sojourn together for a while, and carry through all their lives the stamp of the influences then brought to bear upon them. Hence, it is not beside the mark to remind you that the prosperity of industry depends not merely upon the improvement of manufacturing processes, not merely upon the ennobling of the individual character, but upon a third condition, namely, a clear understanding of the conditions of social life on the part of both the capitalist and the operative, and their agreement upon common principles of social action. They must learn that social phenomena are as much the expression of natural laws 170 THE POPULAR SCIENCE MONTHLY. as any others ; that no social arrangements can be permanent unless they harmonize with the requirements of social statics and dynamics ; and that, in the nature of things, there is an arbiter whose decisions execute themselves. But this knowledge is only to be obtained by the application of the methods of investigation adopted in physical researches to the investigation of the phenomena of society. Hence, I confess, I should like to see one addition made to the excellent scheme of education propounded for the college, in the shape of provision for the teaching of sociology. For, though we are all agreed that party politics are to have no place in the instruction of the college, yet in this coimtry, practically governed as it is now by universal suffrage, every man who does his duty must exercise political functions. And, if the evils which are inseparable from the good of political liberty are to be checked, if the perpetual oscillation of nations between anarchy and despotism is to be rej)laced by the steady march of self -restraining freedom, it will be because men will gradually bring themselves to deal with political as they now deal with scientific questions ; to be as ashamed of undue haste and partisan prejudice in the one case as in the other ; and to believe that the machinery of society is at least as delicate as that of a spinning-jenny, and not more likely to be improved by the meddling of those who have not taken the trouble to master the principles of its action. In conclusion, I am sure that I make myself the mouth-piece of all present in offering to the venerable founder of the institution, which now commences its beneficent career, our congratulations on the com- pletion of his work ; and in expressing the conviction that the re- motest posterity will point to it as a crucial instance of the wisdom which natural piety leads all men to ascribe to their ancestors. — N'ature. -♦♦♦- EXPEKIMENTS "WITH THE "JUMPERS" OF MAINE.* By GEOEGE M. BEAED, M. D. ABOUT two years ago my attention was directed by my friend Mr. W. A. Croffut to the fact that, in the northern part of Maine, especially in the region of Moosehead Lake, there were to be found a class of people who presented most incredible nervous phenomena. These people were called in the language of that region " Jump- ers" or "Jumping Frenchmen." It was claimed that all, or most of them, were of French descent and of Canadian birth, and that their occupation was mainly that of lumbering in the Maine woods. Mr. * Read before the American Neurological Associatiou, June, 1880. THE ''JUMPERS'' OF MAINE. 171 Croffut introduced me to D. W. Craig, Esq., a gentleman who had spent much time in that portion of Maine, and who had amused him- self with watching and playing with these unfortunates. In accordance with the request of Mr. Croffut and Mr. Craig, I began at that time an investigation of the subject through all acces- sible sources, and this year I visited Moosehead Lake in company with my friend Dr. Edward Steese, and made the investigations herein re- corded. I found two of the Jumpers employed about the hotel. With one of them, a young man twenty-seven years of age, I made the follow- ing experiments : 1. While sitting in a chair, with a knife in his hand, with which he was about to cut his tobacco, he was struck sharply on the shoulder, and told to " throw it." Almost as quick as the explosion of a pistol, he threw the knife, and it stuck in a beam opposite ; at the same time he repeated the order " throw it " with a certain cry as of terror or alarm. 2. A moment after, while filling his pipe with tobacco, he was again slapped on the shoulder and told to " throw it." He threw the tobacco and the pipe on the grass, at least a rod away, with the same cry and the same suddenness and explosiveness of movement. 3. When standing near one of the employees of the house, he was told to " strike," and he struck him violently on the cheek. I took this person into the quiet of my own room, only my friend being with me, in order that the experiments might be made without interrui^tion or disturbance. I sat down by him, explained to him the object of my visit, conversed with him in regard to his family history and his own personal experience and observation of his peculiarity, and every now and then, during the conversation, I struck him without warning on the shoulder or on the back, or mildly kicked him ; and every time he was so struck he moved his shoulders upward slightly, sometimes moving both the shoulders and the arms, with or without the peculiar cry. He knew that I was studying his case ; he knew that the kicks and strokes came from me, and yet he could not avoid making a slight jump or motion, as though startled. 4. While holding a tumbler in his hand, standing near to him, I told him to " throw it." He dashed the tumbler with great violence to the floor, and then began deliberately picking up the pieces in a very quiet and patient way. Whenever I struck him quietly, easily, and in such a way that he could see I was to strike him, he made only a slight jump or movement ; but when the strike or kick was unex- pected, though very mild in character, he could not restrain the jump- ing or jerking motion ; but the cry did not always appear. 5. A handkerchief was suddenly thrown before his eyes by a per- son walking stealthily from behind. He jumped, just as though he had been struck. Another case in the house, a lad sixteen years of age, was not so 172 THE POPULAR SCIENCE MONTHLY. bad as this other, but still presented all these phenomena : he jumped when he heard any sound fx'om behind that was sharp and unex- pected, and struck and threw when ordered to do so. The crowd around the hotel, partly for my benefit, kept him constantly teased and annoyed, so that when he approached he had a stealthy, suspicious, and timid look in his eye, as though he expected each moment to be jumped. 6. This man, while playing with one of his mates, had thrown him to the ground ; some one approached near and commanded " Strike him," and he struck him very hard and explosively, with both hands at a time. 7. When standing by a window, he was suddenly commanded to "jump" by a person on the other side of the window. He jumped straight up, half a foot off the floor, with a loud cry, repeating the order which had been given to him, 8. When the two Jumpers were close together, they were com- manded to " strike " : each struck the other simultaneously — not mild or polite, but severe and painful blows. I took one of these men to my room and quietly conversed with him, and made the same experi- ments with him as with the other case. I found him much less irri- table than the other, and he needed usually stronger excitation to pro- duce the phenomena. I experimented with him in the phenomenon of repeating language that was addressed to him. W hen the command was uttered in a quick, loud voice, he repeated the order as he heard it, at the same time that he executed it. When told to strike, he said " Strike " at the same time that he struck ; when told to throw it, he said " Throw it " at the same time that he threw whatever was in his hand. It made no difference what language was used. I tried him with the first part of the first line of Homer's " Iliad," and with the first part of Virgil's "^neid," languages, of course, of which he knew nothing, and he repeated quickly, almost violently, the sound as it was uttered — " Menin Aida," the first part of the first line of the "Iliad," and "Arma-vi," the first part of the first line of Virgil. In order to have it repeated, it was necessary that the command should be very short, as well as quickly and strongly uttered. He would not repeat a whole line, or even half a line, but simply a word or two. In these, as in the mind- reading experiments, I was able to establish ray conclusions by exclu- sion— that is, by proving that only the involuntary action of mind on body could produce the phenomena. These experiments were repeated again and again, under various conditions at different times, in such a way as to satisfy myself, abso- lutely, that the six elements of error that apply to all experiments with living human beings were all eliminated, and that the facts obtained were the solid residuum of an exact scientific investigation.* * The six sources of error in experimenting with living human beings are — 1. Uncon- scious deception on the part of the subject experimented on ; 2. Intentional deception on THE ''JUMPERS'' OF MAINE. 173 Many strange things are done by these Jumpers. One of those with -whom I experimented came very near cutting his throat the day before I reached the lake. He was shaving, and the door slammed suddenly behind him ; he jumped, and, had the razor been held in a different way, he might have inflicted a severe wound. One of these Jumpers being surprised by an order to " strike," while standing before a window, struck his fist right through the glass, cutting it severely. These Jumpers have been known to strike their fists against a red-hot stove ; they have been known to jump into the fire, as well as into water ; indeed, no painfulness or peril of position has any effect on them ; they are as powerless as apoplectics or hysterics, if not more so ; the absolute victims of the orders that are given them, or of the surprises that are played upon them ; they must do as they are told, though it kill them, or though it kill others. I can find no evidence that the presence of water or of fire will interfere, even in the slightest degree, with the motions which they are compelled to make. As has been made apparent by the above description, it is not necessary that the surprises should come from any human being ; it is not necessary that they should be ordered to strike or to jump ; any sound, from any source, that comes upon them with sufticient severity and sudden- ness, for which they are not forewarned and forearmed, may cause them to jump and to cry. One of those on whom I experimented told me that the falling of a tree in the woods, when unexpected, would have the same effect upon him. He said that one time he was so alarmed by the sudden crash of a tree that he not only jumped, but was perfectly entranced, so that he could not move, al- though the tree did not fall upon him. The explosion of a gun or pistol is almost sure to excite these Jumpers. The screech of a steam- whistle is especially obnoxious to them, few of them, so far as I have been able to learn, having been able to withstand it. On one of the lake-steamers in which I returned from the hotel, there was a Jumper who, when the screech was heard, jumped right up, so that he nearly hit his head on the upper deck. As the steamer neared the landing and came to a place where he knew the whistle would sound again, he was warned to prepare himself, and he did so with such success, that on the first screech he jumped scarcely any ; on the second, however, despite his care, he raised his shoulders perceptibly, but did not jump. In many of these cases, it may be observed, a simple rais- ing of the shoulders, a sudden impulsive movement, is all that is done, there being no cry and no movement of the hands to throw or to strike. the part of the subject experimented on ^ 3. Intentional collusion of other parties ; 4. Unintentional collusion of other parties ; 5. Chances and coincidences ; 6. Phenomena of the involuntary life. In experimenting with the Jumpers the nature of the phenomena made it easy to eliminate the main element of error, intentional deception on the part of the subject — since, unless the subject is deceived or at least surprised, the phenomena do not appear. 174 TH^ POPULAR SCIENCE MONTHLY. Although called "Jumpers," they only jumjy in a minority of the experiments, the word jumping really including all such jDhenomena as lifting the shoulders, raising the hands, striking, throwing, crying, and tumbling. Jumpers have been known to fall head over heels over an embankment on which they were sitting, on suddenly hearing the whistle of a locomotive ; they have been known to tumble head over heels over one another, when a number of them were sitting near each other. The order to " drop it " they are compelled to obey, as well as that to strike or to jump or to throw. On one of the steamers on the Range- ley Lakes there was a waiter who was a Jumper, and when told to " drop it " he would drop whatever he had in his hands, even if it were a plate of baked beans, on the head of one of the guests. The Jumpers with whom I experimented exhibited the same phenomena. These phenomena suggest epilepsy, particularly in their explosive character and in the nature of the cry. The hands strike or throw with a quick, impulsive movement, which is very hard to imitate arti- ficially. They go off like a piece of machineiy ; it is more like the explosion of a gun than the movement of the limbs of even an angry man ; and the cry suggests that which we hear in hysteria and in epilepsy. The face does not always exhibit any change, but in some cases there is a temporary flushing, and in others a temporary pallor. All the Jumpers agree that it tires them to be very much jumped ; that they feel worse after it, more or less exhausted and nervous ; they all dislike to be jumped, and avoid it when it is possible ; the more they are jumped the worse they are ; and that after a while in the woods, where they are constantly teased and annoyed after the day's labor is over, they are made worse ; whereas, after long periods of rest they become better, are less irritable and jump less, and do not jumj) so easily on excitement. Nature of this Disease. — "What, now, is the pathology of this jumping ? How are we to rank these phenomena among the neuroses ? What relation do they bear to the great family of di^ases ? Are they functional or structural ? Are they physical or psychical ? The answer is clear : jumping is a psychical or mental form of nervous disease, and is of a functional character. Its best analogue is jisychical or mental hysteria, the so-called " servant-girl hysteria," as known to us in modern days, and as very widely known during the epidemics of the middle ages. Like mental or psychical hysteria, this jumping occurs not in the weak, or the nervous, or the angemic, but in those, as a rule, in at least good if not firm and unusual health ; there are no stronger men in the woods, or anywhere, than some of these Jumjiers. Although some of them are injured by being excessively jumped for the time at least, yet to the majority, if not nearly all, this injury can not be said to be of a serious character. It does not apparently shorten life, and does not bring on, so far as I can learn, any other form of THE ''JUMPERS'' OF MAINE. 175 nervous disease. It can not, therefore, be said to be in any sense a disease of nervous debility. Those who suffer most from it are the very opposite of neurasthenics or anaemics ; they have none of the symp- toms detailed in my work on nervous exhaustion ; they are full-blooded and strong-nerved, capable of working hard and long at the most toil- some service, and will hold themselves up full and sturdy and enduring, side by side with the hardiest men in the nation. Like " servant-girl hysteria," and like certain forms of chorea or "jerks," as they are called, which appear or have appeared in certain religious revivals, like the " Holy Rollers " * as they were called in the religious revivals of north- ern New Hampshire, these Jumpers are contributions to psychology more than to pathology. Far out of the range of the aided senses, far beyond the reach of the microscope, or perhaps of the spectroscope, there may be molecular changes or disturbances which manifest them- selves in these jumpings and strikings and throwings as a result and cor- relative. But for the present, possibly for all time, we can only study this subject psychologically ; we can only approach it satisfactorily from the psychological side. Only those who clearly recognize the two distinct types of hysteria, the neurasthenic or anaemic form, which may be called physical hysteria, and the mental or psychical form, which may be called psychical hysteria, can understand the nature of this peculiar malady of the Jumpers ; but those who do comprehend and recognize these two types of hysteria will have little difficulty in comprehending the general nature of this jumping and its position among the neuroses. Some of the cases of hysteria major on which Charcot has experimented with his metals and magnets belong, as I am persuaded from personal observation, to psychical or mental rather than to physical diseases. I can find in the families of those who suffer from jumping no proof of any form of functional or organic nervous disease. Jumping is, therefore, a trancoidal condition, exhibiting a part of the phenomena of trance, and bearing the same relation to trance that certain epileptoidiil conditions bear to epilepsy. Although the phenomena exhibited by the Jumpers are analogous to those of mesmeric trance, of mental hysteria of the " Jerkers " and " Holy Rollers " in revivals, they yet differ from all these and all allied forms of nervous disorder in these two respects : 1. The momentary character of the manifestations. In but a second or so all the acts of the Jumper — striking, throw- ing, dropping, crying, jerking, or jumping — are over completely, and he is about in the same condition as before he was surprised. The ex- plosion of the Jumper, like the explosion of a revolver, is sudden and instantaneous ; and like a revolver, also, the Jumper is at once ready for a new explosion on proper excitation. If we look at a Jumper five * So called because they rolled over and over on the floor while under religious ex- citement. 176 THE POPULAR SCIENCE MONTHLY. seconds after he has been jumped, we see no sign or indication of what he has just done, or of what he can instantly be made to do. On the other hand, the phenomena of trance, of mental hysteria, of the " Jerkers " or " Holy Rollers " may last in any given case from several minutes to several hours or days.* Recent German investigations have, by an interesting coincidence, demonstrated that subjects in the mesmeric trance sometimes exhibit the phenomenon of repeating automatically what is said to them. Berger produces this effect by laying his warm hand on the neck of the mesmerized subject, 2. In the persistence and permanence of the liability to be ex- cited. After once the habit of jumping is formed, the subject, though varying in susceptibility at different times, is yet always capable of displaying the phenomena in a greater or less degree at any moment : once a Jumper, always a Jumper, expresses the prognosis. Epidemics of jerking and rolling are, on the contrary, limited in time and in their sphere, disappearing and dying utterly away with the excitements that give rise to them, and the habit of hysteria or of being entranced may also be outgrown. Psychologically, these Jumpers, so far as I have been able to see or to learn, are modest, quiet, retiring, deficient in power of self-posses- sion, conceit, and push, but no more so than many others in various races. I had been told that they were of a low order of organization — half-breeds, partly French, partly English ; but in this respect I was mis- informed : they are at least as intelligent and as capable of fulfilling the duties belonsxingf to them as the average of their associates who are not Jumpers ; some of them can read and write, and all whom I saw could converse in English with a reasonable degree of intelligence ; possibly as much as we could expect of persons of their age and environment. But all of them, without exception, were of shrinking temperaments. In the chorea epidemics of the middle ages, or of the great religious revivals of this country, this class would be very likely to have been attacked. Hereditary. — Before I visited Moosehead Lake, while I knew only those facts that were obtained at second or third hand, I felt quite sure that this disease w^ould be likely to be a family inheri- tance. This deductive reasoning was confirmed by inductive observa- tion. It is fully as hereditary as insanity, or epilepsy, or hay-fever, although it has no special relation to any of those forms of disease. In the family of one of those with whom I experimented there were five Jumpers, the father, two sons, and two grandchildren of the respective ages of four and seven years. In the family of another with whom I experimented there were four, all brothers. In the family of another * In my work on " Trance " these phenomena are described in more detail than is here possible. THE '' JUMPERS'' OF MAINE. \-jj of whom I obtained information, but did not study, there were three cases, an uncle, a mother, and a brother. In another family there were two boys, both Jumpers. Here, then, were fourteen cases in four fam- ilies. By the study of these cases, it was possible to trace the malady back at least half a century. Endemic and contagious. — Jumping seems to be endemic, con- fined mainly to the north woods of Maine and to those of French descent, and is psycho-contagious — that is, can be caught by personal contact, like chorea and hysteria. Shortly after I began these researches, I found in a copy of the Lon- don " Medical Record " brief reference to precisely similar phenomena on the other side of the globe, among the Malays. The notice was very brief, indeed, but it was sufficient to show that there was no difference in the phenomena as exhibited in these different races. I have been told that in northern Michigan these Jumpers are to be found, but have obtained no evidence on that point that is entirely satisfactory. It would not be improbable that this assertion should be proved to be true, since the class among whom Jumpers are found is somewhat mi- gratory, although not so much so as the English and Americans. Origin and Philosophy of the Disease. — Jumping is probably an evolution of tickling. Some, if not all, of the Jumpers, are ticklish — exceedingly so — and are easily irritated by touching them in sensi- tive parts of the body. It would appear that in the evenings, in the woods, after the day's toil, in lieu of most other sources of amusement, the lumbermen have teased each other, by tickling, and playing, and startling timid ones, until there has developed this jumping, which, by mental contagion, and by practice, and by inheritance, has ripened into the full stage of the malady as it appears at the present hour. This theory is in harmony with the general facts of physiology, and ex- plains, better than any suggestion that has occurred to me, the his- tory of what would otherwise appear to be without explanation, and almost outside of science. In a certain sense, we are all Jumpers ; under sudden excitement, as of a blow, or a violent, unexpected sound, any person, even not very nervous, may jump and cry, somewhat as these Jumpers do, though not with all the manifestations of the Jump- ers. Hysterical women, jumping and shrieking on slight excitement, we have all seen. Everything about this subject is incredible. I do not expect that my readers will believe all, if they believe any, of what is here re- ported ; rather they will find it easier to believe that I have been deceived ; that the six sources of error that are involved in all experi- ments with human beings were not fully eliminated ; that the Jump- ers, in short, experimented with me, and not I with the Jumpers ; and that, through all of this half century, the guides and physicians, the proprietors of hotels, and their neighbors, and relatives, and friends, have been the victims of intentional or unintentional fraud. But to VOL. XVIII. — 12 178 THE POPULAR SCIENCE MONTHLY. vaj own mind the most incredible fact of all is, not the existence of the phenomena, but that the phenomena have not been sooner observed by science, and that they have so long escaped the notice even of scientific men who live near or in those regions, and who frequently visit them. Two of the best known citizens of Greenville — a town at the foot of Moosehead Lake — who have lived there very many years, if not all their lives, who have had these Jumpers in their employ, denied or doubted the existence of any of these phenomena, declaring that these so-called Jumpers were merely drunk or playing. My guide in the woods of northern New Hampshire, who had spent his whole life in those wilds, who was old enough to be a great-grandfather, denied, without reservation, the whole claim ; but, after investigating the sub- ject with me, was compelled to admit its genuineness. One of my fishing companions in the woods, a clear-brained and vigorous man of business, and a man of the world, who for seventeen years had passed his summers in these regions, knew nothing of the subject until this season when I called his attention to it. All around these districts there are physicians, not in them but near them — for in the summer season the Jumpers scatter, to a certain degree, over the farms in the vicinity — and every year physicians and men of science, experts in various realms, visit for recreation the districts where these Jumpers most abound ; but if they see them they do not notice them, or if they notice them they do not understand them, or if they understand them they say nothing about them, and do not attempt to bring, or at least do not succeed in bringing, the phenomena into science. THE AUGUST METEOKS.* By W. F. denning, F. R. A. S. THE August shower of meteors forms one of the most attractive and important of the annual phenomena witnessed by astrono- mers, and the display is awaited every year with considerable interest, not only by a large section of habitual observers, but by many persons who have their attention called to it in a mere casual way by the fre- quency and brightness of the meteors. For, on the 10th of August, if the night is clear and the moonlight not very strong, a person can not be long in the open before his curiosity is excited by numbers of these " falling stars," which he will notice traveling swiftly athwart the sky, and leaving lines of phosphorescence along their paths. It is, * For a description of the November meteor-showers, see " Popular Science Monthly," vol. XV, page 445. THE AUGUST METEORS. 179 however, not the business of the ordinary gazer to regard such occur- rences with more than a passing interest, and he simply watches their progress with a feeling almost amounting to utter indifference. But it serves to while away a leisure hour and to give rise to some curious speculations as to the origin and end of the transient objects which now and again come before his view. The case is different with the scientific observer. He has a practical interest in the phenomenon, and zealously endeavors to record its more remarkable features as they become successively presented, and to watch with increasing diligence its further development in the later hours of the night, remembering that his notes must hereafter have some value in the genei-al compari- son of results. Quetelet's catalogue of observed meteor-showers embraces a large number which obviously belong to the August period, but the majority occurred during the present century. This can not be ascribed to an increasing activity of the meteor-stream. It is at once explained by a greater assiduity of observation, and by the fact that the subject is Pig. 1.— Broken Stkkak op a Perseid in Peqasus, August 11th, llh. 10m. considered of more importance than formerly. Hence in more recent years the shower has been diligently looked for by many observers ; and the result is that we find a large number of records of its displays. In former years it was comparatively neglected. The uncertainty at- tached to the whole subject rendered it unatti'active, for there seemed little likelihood that it would ever become an important branch of astronomy, or yield any valuable results to the patient observer of its nightly displays. Thus we find, among historical records, only a few scattered references to this shower, and we are led, at first, to the in- ference that it was only rarely visible in consequence of the meteors being slightly dispersed over the orbit in former years. But the irregu- larities in the dates of its former apparitions may safely be ascribed to other causes than a physical peculiarity of the shower itself. The lack of interest in the subject would cause it frequently to be disre- garded. Many of its exhibitions would pass wholly unobserved. In- deed, it would only be described when it recurred with such striking intensity as to force itself upon the attention as a celestial event of considerable interest. Between 811 and 841 it furnished a succession i8o THJiJ POPULAR SCIENCE MONTHLY. of brilliant displays at the end of July. Then there occurred a break until eighty-three years later, when it several times reappeared with fiimilar splendor. A wide interval of more than three hundred years brings us to the year 1243, when it seems to have been again recog- nized, after which, until 1709, there is only one other observation of the shower (in 1451). During the last hundred years it has, however, been frequently observed, though many of the recent displays can not be compared with those of ancient times. The intermittent and rare character of the shower, as it existed between the tenth and eighteenth centuries, proves that few returns were of a sufficiently imposing na- ture to be recorded, and that possibly the conditions were opposed to its appearance. If the meteors of the orbit during that period were condensed in the region of their derivative comet, then we can under- stand the singular paucity of observations. The earth, as it passed the node, would year after year encounter no meteors until the peri- helion approach of the cluster, when possibly the display may have occurred in the daytime, and been of such brief duration as entirely to elude detection. The entry of this stream into the solar system probably dates back to a very remote antiquity — for there are several circumstances which conspire to prove that such must have been the case, and that it pre- ceded, by many ages, the apparition of the Leonids, Andromedes, and some of the other periodical meteor-showers. The fact that it consti- tutes an unbroken ring leads to the inference that it must have existed from the earliest times in order to bring about so complete a dispersion of its particles, for on its first introduction, as a comet, to the earth, it is to be assumed that it formed a condensed mass like the Leonids, and only appeared as a meteor-shower when the comet returned to perihelion. A very slight difference in the periodic times of the indi- vidual meteors following the nucleus must have eventually distributed them (by its cumulative effects) along the entire orbit. In other words, the original group must have undergone a process of lengthen- ing out, until, at the present day, it consists of a parabolic zone of meteoric pellets, through which the earth passes annually on August 10th. Moreover, the radiant point of the shower often fails to become sharply defined. Several concentric streams of similar meteors appear to diverge from the region about r] Persei, and their physical identity is unquestionable. They are merely the deflections or offshoots from the original system which must be greatly disturbed and contorted as the earth annually intersects it. The full effects of these perturba- tions can hardly be estimated : many of the particles must be diverted into new orbits, and one of the results upon the main stream may be a constant widening out, so that the apparent duration of the shower must go on increasing. It now actively extends over at least eight nights ; hence the width must exceed 10,000,000 miles. And some diminution in its intensity must occur at each return, unless there is a THE AUGUST METEORS. 181 Fig. 2.— Pkbseids near thk Radiant (44° + 57°), August 8th-18th. i82 THE POPULAR SCIENCE MONTHLY. source of compensation for the expenditure of its materials upon the earth. But, though many millions of the atoms are annually con- sumed in our atmosphere, the effect of the thinning out will be very gradual in making itself appreciable, for, as compared with the vast assemblage which constitutes the main ring, the proportion which en- counters the earth is small indeed. As it is enveloped in the stream, comparatively few of the meteors are actually intercepted. By far the greater number pass by untouched. If a ball is thrown up in a thick shower of rain, it will only encounter a few drops. This may be taken as an illustration. The earth, with its diameter of 8,000 miles, can only meet with a few meteors in its rapid flight through a zone exceeding 10,000,000 miles in width. The period of the August meteors is uncertain. Their distribution appears to have been so effectual that the element can not be determined. Some years give plentiful showers, but there have been no decided traces of regularly recurring maxima, as in the case of the Leonids. This may possibly be explained by the fact that the period is a long one, and would not become defined until after centuries of research. Comet III, 1862, which shows an exact resemblance of orbit to this system, was computed by Oppolzer to have a period of 121*5 years; and, as there occurred a fine display of the August meteors in 1863, we can not anticipate its periodical return until about 1964, if the calculations are reliable. The August Perseids have been more frequently observed than any other system of shooting-stars, from the fact that they are visible every year with more or less distinctness, and that, as an annual shower, they can not be surpassed by any other display. The two celebrated streams of November 13th and 27th, occasionally giving rise to showers of great splendor, are periodical in character, though it is extremely probable that a few of their meteors encounter the earth at the regular return of the dates ; notwithstanding that they may elude observation in consequence either of moonlight or cloudy weather, which, indeed, generally offers some impediment to success. But the August meteors recur annually with considerable intensity, and had attracted attention at a very remote epoch, though the phenomenon was not systematically studied until later times. It was reserved for Heis at Aix-la-Chapelle to more thoroughly investigate the meteors of August, for the previous observers, though they had ascertained the fact that the month was notable in this respect, had yet neglected to obtain any important data with regard to the number or directions of the meteors seen. Schmidt also, at Bonn, began assiduously to devote himself to this special line of inquiry. The particular night in August when the meteors were most plentifully distributed was found to be the 10th, though the numbers were subject to considerable variations in different years. Schmidt, from an average of several years of ob- servations, gave the following as the horary number of falling stars THE AUGUST METEORS. 183 for one observer. His results are compared with a similar average de- rived by Major Tup man and the writer from observations in 1869-71 and 1877-80 respectively : FALLING 8TAES IN ONE HOUR. DATE. Schmidt. Tupman. Denning. 6 Aucust 6 11 15 29 31 19 7 36 37 46 69 63 27 13 n " 8 " 23 26 9 " 44 (max.") 10 " 71 11 " 38 12 " 24 Schmidt's figures are very small and much below the numbers found in recent years. But the averages in the table are not thorough- ly reliable, inasmuch as they are based upon only a few years' observa- tions. A longer series might give a closer comparison, but it is seldom that the results of independent observers agree within small limits. There are differences in vision, modes of observation, and in position, which must obviously affect the numbers to no small degree ; and the in- termittent character of the meteor-shower itself must give rise to discrep- ancies which can not at first sight be accounted for. The horary num- ber of meteors on August 10th may vary, according to Heis, from 160 (in 1839) to 24 (in 1867). During the last ten years the writer has found little variation in the intensity of the annual returns when the condi- tions of weather and moonlight are fully taken into account ; and there is no question that some of the variations ascribed to the shower have no real existence, but are to be explained by the differences re- ferred to above. A fair comparison can not be instituted between the horary num- bers found by observers, unless the observations, from which the values are deduced, are made, in each case, at similar hours of the night ; for shooting-stars, though often plentiful after midnight, are comparative- ly scarce in the evening hours. This is readily explained by the fact that the principal radiant points of the showers are massed together in the eastern region of the sky where the earth's orbital motion is direct- ed, and it is obvious that in the evening hours, when the altitude of many of them is very low, and when others have scarcely appeared above the horizon, their operation is in a great measure restricted, so that only a feeble indication of their displays is perceptible at such a time. The case is entirely different at a later period of the night, when the con- stellations in which the several radiant points are situated have ascend- ed high in the sky, and are in fact so placed that they may be seen to the greatest advantage. The August Perseids are always best observ- able in the morning hours, for the radiant point is very low on 'the i84 THE POPULAR SCIENCE MONTHLY. horizon soon after dark, and a person who persistently watches it dur- ing the night will find, with increasing elevation of the radiant, a corresponding increase in the hourly number of meteors. In 1877, at Bristol, the eastern sky was persistently watched between 9h. 30m. and 14h. 30m., when 354 meteors were seen ; and, though the horary Pig. 3.— Radiant Pointb east of the Peeseids, August 6th-13th. B Major Showers. Minor Showers. Perseids. rate before llh. was only 47, it rose to about 80 during the last half of the watch. Indeed, the number of meteors observed at the end of the watch was more than double the number recorded at the beginning of it. Thus it is apparent that the most favorable time for such obser- vations is in the morning hours, and though it is generally incon- venient for amateurs to extend their vigils thus far, the importance of doing so can not be too strongly insisted on. THE AUGUST METEORS. 185 A typical feature of the Perseids is to be found in the streaks which frequently mark their course (Fig. 1), and serve an extremely useful purpose in enabling the directions to be registered with great accuracy. The theoretical velocity of these meteors is thirty-eight miles per second, so that they belong to the swiftest class of such bodies, and, as such, would be individually recorded with much diffi- culty, were it not for the special feature referred to. Their very rapid transient flights would baflie the observer as he stood endeavoring to retain the exact points of beginning and ending ; and in the majority of instances he must absolutely fail to get nearer than a mere approxi- mation. Only in cases where the meteors sped from one star to an- other, or in courses parallel to closely adjoining stars, could the paths be truthfully reproduced on his map. But, fortunately for such inves- tigations, we have no such difficulties to encounter. The phosphores- cent line, almost invariably projected on the sky by the nucleus as it rushes along, remains to guide the eye in fixing its position. It is the authentic signature of the meteor gone before, and during the brief span of its endurance the observer knows how to utilize it. It is sel- dom these streaks last longer than three or four seconds, though in exceptional cases of Perseid fire-balls they have lingered several min- utes. The writer found the average 1"8 second from many observa- tions in August, 1880 ; and the most frequent duration is about two seconds. All the brighter meteors of the shower display them. Mr. Henry Corder, of Writtle, has observed these Perseids with great dili- gence in recent years, and retained many interesting notes of their peculiarities. Of 910 meteors belonging to this system, which he saw in the years 1871-79, .526 were accompanied by streaks. These in- cluded 158 of the first magnitude, only 15 of which were devoid of streaks ; and 243 of the second magnitude, of which 72 were streak- less. Among the smaller members the proportion was larger. He found the brightest meteors were generally pale-green, others orange, etc. The luminous streaks, which are known to be the ordinary charac- teristic of these shooting-stars, have acquired a special significance from the fact that by their means the radiant point of the shower is capable of being ascertained with remarkable precision. This impor- tant element, to be reliably determined, must rest upon a large number of accurately recorded tracts, which intersect (on being prolonged backward) at a well-defined position. Many observers have succeeded in finding this from results of more or less value. Mr. R. P. Greg analyzed all the positions estimated prior to 1876, and gave the aver- age at R. A. 44°, Dec. 56° north ; and Major Tupman, from a discus- sion of his own elaborate observations in the Mediterranean during the years 1869-'71, derived the point 45J° + 56°, as the center of 28 sub-radiants. Evidently the two results, being founded on a large number of trustworthy records, and agreeing so closely as they did. i86 THE POPULAR SCIENCE MONTHLY. Bhowed the true radiant to be situated on the northern limit of Perseus, close to the star Eta of that constellation ; and more recent determi- nations of a similar nature have fully corroborated that as the chief diverging center of the August meteors. Many other contemporary showers have been detected in the same region of the heavens, but the shower of Perseids recurs year after year from its accustomed point. During the last eleven years the writer at Bristol has awaited the annual returns of this shower, and the aggregate results of observa- tions during the interval between the 6th and 12th of August show that 2,345 meteors have been recorded, of which 1,428 belonged to the Fig. 4.— Suowek from Camelopardus (96°+ 71°), August 6ih-12th. display of Perseids, and 917 to other minor streams of the same epoch. In 1889 the radiant was judged to be at rj Persei ; in 1871 at B. Came- lopardi ; and in 1874 at 44° -f 58^°, The average position found dur- ing the last five years has been at 44° + 57° ; and in the diagram (Fig. 2) a number of paths near this radiant are shown. Some of the me- teors appear to be slightly erratic in their directions ; but this may be explained either by errors of observation or by a double or diffused radiant point, Avhich must often occasion non-conformity in the ob- served flights. In 1878 two points of departure were manifest from a series of precisely fixed courses at 44° -f 59° and 42i° -f 54° ; but in 1879 the weather interrupted observations. The present year, how- ever, afforded an exceptionally favorable opportunity to observers, and the major radiant determined by the writer was at 44° -f 56°, with the decided traces of a sub-radiant at 45° + 60°. In 1878 Major Tupman THE AUGUST METEORS. 187 found the shower double at 46° + 57*6^ and 38° + 56° ; and in 1880 he strongly corroborated the results obtained at Bristol, though his observations were mainly confined to the night of August 9th. At the latter station the radiant apparently advanced among the stars of Perseus, for, while early in the month it was observed at 38° + 56°, it had shifted to 49^° + 57^° by the 13th. The same peculiarity was noted in 1877, when the following determinations were made : Radiant. 7th 40 + 56 August 10th 43 + 58 August 3d Badiant. August 12th 50 + August 65 16th 60+59 There is a prominent display of meteors from the star-group % Persei at the end of July and beginning of August, and it is possible that these showers may belong to the same system of concentric meteor- streams. It is certain that this fact of a progressive radiant requires fuller elucidation, and to this end observers should keep the data ob- tained each night separate. It may also be suggested that the radiant point should be ascertained during each hour of observation, and then, when the series are compared, any displacement must immediately become obvious, and its extent and character well defined by the ob- servations. The meteors from Perseus are so numerous, and the place of divergence so readily denoted by their enduring streaks, that there will be no difiiculty in an investigation of this kind. The last two years' observations have shown how exactly the radiant may be found \)j carefully conducted researches, and how closely the positions de- rived by different observers will agree on being compared together : OBSERVER. G. L. Tupman H. Corder E. F. Sawyer. . W. F. Dennin" 1879, August. Chief Radiant. 45 + 56 45 + 57 44i H- 57 46 + 58 1880, Au^st. Chief Radiant. 44 + 56 45 + 58 44f + 56i 44 4- 56 From these values a mean of 44'8° + 56-8° is derived, which is probably very near the truth. There is a secondary shower higher in declination (at about 44|^° -f 60°), but this is merely a branch of the same stream, for the meteors exhibit the same specialties of appear- ance as those common to the major shower. An apparent diffuseness of the radiant point is often brought about by imperfectly registered tracks, and by allotting the meteors of bordering showers to the radiant of the Perseids, when in fact they belong to evidently distinct families. A few years ago the writer undertook the investigation of these co-Perseid showers from the large mass of shooting-stars which had been registered at this epoch at foreign observatories, and are contained i88 THE POPULAR SCIENCE MONTHLY. in the published catalogues of Heis, Schiaparelli (1872), Weiss, and Konkoly, These include many thousands of paths observed during the period from August 6th to 12th, and such of these as were obvi- ously directed from radiant points situated eastward of Perseus were projected on the star-maps prepared by Professor Herschel for the purposes of the Luminous Meteor Committee of the British Associa- tion. In all 762 meteors were thus utilized, and they gave distinct evidence of the positions of a number of active streams in Auriga and Camelopardus, some of which were previously observed by Heis, and many of them have been confirmed by the writer during the last five years. The following list embraces the chief radiants thus deduced : Meteor- Showers east of Perseus, August QtJi-l'ith. N«. 1 2 3 4 5 6 n 8 9 Radiant. a 5 o o 70 + 64 61 96 61 51 4- 39 71 48 + 74 78 + 56 76 + 45 50 + 47 92 + 57 No. of Meteors .. 74 59 . . 87 . . 59 . . 62 59 43 42 42 No 10 .. 11 . .. 12 . . . 13 ... 14 ... 15 .. . 16 ... 17 ... 18 Radiant, a 8 134 + 7°7 74 -I- 33 104 + 34 99 + 46 45 -(- 33 76 + 74 52 -I- 20 87 + 34 87 + 15 Ifo. of Metoora. 30 28 13 17 18 20 14 14 8 The relative positions of these showers are depicted in the diagram (Fig. 3), where the more prominent displays of the group are represent- ed by deeper circles than the minor. Some of the latter can not yet be regarded as certainly established, inasmuch as they rest on slender materials. Heis devoted much attention to the meteors of the August period during more than forty years (1833-'75), and in his extensive " results," published in 1877, gives the following as the chief radiant points for August 9th-llth : Sjmbol. A.. B4 Ba Crs Cre Cra Gr, Radiant. a 5 o o 45 + 52 330 + 55 292 4- 70 12 + 32 + + 355 11 81 60 73 + 63 No. of Meteors. 233 164 135 93 103 192 125 Symbol. Cr„ Sti2 Stis St„ Sti8 fetifl fetao Radiant. a 8 273° + 56 40 + 45 56 + 70 27 + 21 25 + 58 295 + 44 51 + 75 No. of Met«or3. 93 118 105 70 282 110 133 But, in addition to these, there are a large number of radiants scat- tered over the sky, especially in the eastern quadrant. One of the most notable of these proceeds from the eastern extremity of Aries (44° -I- 25°), and supplies some bright meteors in the morning hours ; but the most conspicuous shower discovered east of Perseus at this epoch lies in Camelopardus, and in the diagram (Fig. 4) a number of its meteors, falling among the stars of Ursa Major, are reproduced THE AUGUST METEORS. 189 from the catalogues of foreign observers. This shower, however, escaped the detection of Heis and others, who had been engaged in similar investigations, though it appears to be of more importance than several radiants in its vicinity which have been independently deter- mined by several observers. At the end of July, 1878, the writer noted a few brilliant, slow meteors, from a point at 96° + 72°, and this may have been an early evidence of the radiant which is placed in a region bare of large trees between Telescopium and Polaris. It is just north of the triangle of faint stars {I. p. q. Ganielopardi of Bode), east of a line drawn from (i Aurigoe to Polaris, and will, no doubt, be frequently reobserved in future years, though the shower of Perseids usually mo- nopolizes attention at the epoch of its annual returns. There is a shower near ?/ Persei (No. 2), well defined, on August 6th-12th, August 21st-23d, and September 6th-15th. At the latter FiQ. 5.— Shower op Perseids (61° + 36°), max. September 6th, 7th. epoch it furnishes some fine meteors and constitutes a prominent dis- play. The diagram (Fig. 5) gives the positions of eighty-six paths conforming to this radiant, observed at Bristol, and at several foreign stations in September. The ordinary designation of Perseids for the special meteor-shower of August 10th is always understood in its individual application, though it must not be supposed that this is the only shower of Perseids visible in that month. The fact is, there are many separate showers directed from that constellation early and late in August, so that we require 190 THE POPULAR SCIENCE MONTHLY. some distinguishing titles or symbols to conveniently particularize either of them which it may be necessary to refer to. The method now- adopted, of naming the chief periodical showers by the constellations in which their radiant points are situated, is very appropriate ; and such displays as the Orionids, Leonids, and Geminids, have become so well known by their titles that it would be unwise and inconsistent to attempt reform. But with regard to the minor systems, which are becoming very numerous, and require an equally ready mode of ex- pression, there is a great difficulty in avoiding complications. There are certainly five nearly simultaneous showers of Perseids early in August ; and in every month of the year, except May and June, meteors continue to fall from that constellation. If the present mode is adopted of styling them Perseids I, Perseids II, and so on pro- gressively, a good deal of confusion must eventually arise as new sys- tems are discovered ; and this classification by Roman numbers, how- ever appropriate it may be in some of its other applications, will have to give way to a more distinguishing means of reference. The name at present only gives indication of the constellation from which the meteors emanate, without regard to the date or approximate place of the radiant, and it seems to me that the difficulty may be obviated by including the nearest fixed star and the epoch with that name. To render the proposal clear, let us take the different streams proceeding from the under-mentioned points in Perseus in August: 44° + 56°, 32° + 53°, 61° + 36°, 61° + 48°, 46° + 47°, which may be thus termed ; 7) Perseids (August 10th). X Perseids (August lst-3d). € Perseids (August). (X Perseids (August). a Perseids (August). This is apparently a preferable method to that of Perseids I, II, III, IV, and V, which must occasion endless trouble in references to find what special stream is meant. Moreover, the numbers seem only in fair application when affixed progressively to the successive showers of the year, for it would be hardly consistent to call a radiant visible in Perseus early in January by the designation of, say, "Perseids XXXVIII." Yet this is what we are drifting to, unless a fresh sys- tem is introduced to accommodate the rapidly increasing number of meteor-streams. — Popular Science Beview. EARLY PRACTICE OF MEDICINE BY WOMEN. 191 THE EARLY PRACTICE OF MEDICINE BY WOMEK* Br Professor H. CAKRINGTON BOLTON, Ph. D., OF TRINITY COLLEGE, HARTFORD, CONNECTICUT. IN attempting to sketch the history of the entrance of women into the medical profession, we find the earlier periods obscured by a meageruess of material and a lack of sequence which our superficial researches have failed to supplement. Isolated cases of gifted women attaining notable surgical skill and successfully pursuing the divine art of healing are recorded at various epochs in the history of the intellectual development of woman, but they occur at long intervals of time and in widely scattered chronicles. In the following pages we have not undertaken to present an exhaus- tive history or catalogue of female practitioners of medicine ; we have simply collected a few scattered notices, and molded them into an outline to be hereafter filled up by a more competent hand. These notices refer to the earlier history only, and by earlier his- tory we mean the period prior to the establishment of medical schools for women, and to the present movement for their higher education. From the earliest times women have successfully grappled with a most diflicult branch of medical science, gynecology, but long-existing and deep-seated prejudices prevented an extension of their practice, and save in exceptional cases they were forbidden both the acquirement of accurate and systematic knowledge and the exercise of their chosen vocation. So long as the practice of medicine formed a part of the priestly functions, as in ancient Egypt, the crafty guardians of super- stition sedulously concealed their superior knowledge from an ignorant and credulous people, and especially from women. Yet the story of the birth of Moses shows that female gynecologists were not unknown to the Egyptians. At a later period the Greeks thought to add dignity to the practice of medicine by forbidding it to slaves and (forsooth !) to women. During the middle ages, when every branch of science was more or less dishonored by degrading superstitions, we find women, as well as men, yielding to their influence and exercising the double calling of sorceress and healer of the sick ; nor has the intelligence of the com- mon people even in the nineteenth century reached such a height as to render the business of medical clairvoyant nugatory and profitless. The invention of medicine was almost universally attributed by the ancients to the gods, and it is a curious fact that in both Egyptian and Grecian mythology we find female deities occupying important * An address delivered at the commencement exercises of the Woman's Medical College of the New York Infirmary, May '27, 1880. 192 THE POPULAR SCIENCE MONTHLY. relations to the healing art. To the Egyptian deity Isis, the wife and sister of Osiris, peculiar medical skill was attributed^ and a multitude of diseases were regarded as the effects of her anger. According to tradition she had given unequivocal proof of her power by the restora- tion of her son Orus to life. She was the reputed discoverer also of several remedies, and even as late as Galen the materia medica con- tained several compounds which bore her name : thus, in the symboli- cal language of the Egyptian priestly physicians, the vervain was called the " tears of Isis." According to the annals of Grecian mythology, Hygeia, daughter of ^sculapius, the god of medicine, was worshiped in the temples of Argos as the goddess of health. In art, Hygeia is represented as a virgin wearing an expression of benevolence and kindness, and hold- ing in one hand a serpent which is feeding from a cup in the other. She was regarded as the goddess both of physical and mental health, thereby personifying the aphorism, "Mens sana in corpore sano." The Greeks also ascribed medical power to Juno, who, under the name of Lucina, was held to preside over the birth of children, and to Ocy- ro€?, daughter of the Centaur Cheiron, who was renowned for his skill in surgery and medicine. The sorceresses Medea and Circe were said to make use of herbs in their enchantments and for the purpose of counteracting the effects of poisons. These and similar fables prob- ably preserve in allegoric form facts connected with the practice of medicine by women in the remotest antiquity. The writings of Homer have been examined to ascertain his testimony, but, with the exception of slight reference to woman's part in nursing wounded warriors, he contributes nothing to the subject under consideration. The learned among the Celts, the Druids, were at the same time judges, legislators, priests, and physicians. By persuading the people that they maintained intimate relations with the gods, they succeeded in imposing their authority on the ignorant masses. " Their wives, who were called Alraunes, exercised the calling of sorceresses, causing considerable evil by their witchcraft, but caring for warriors wounded in battle. They gathered those plants to which they attributed magic virtues and they unraveled dreams " (Dunglison), The first female practitioner who received a medical education appears to be Agnodice, a young Athenian woman who lived about 300 B. c. To satisfy her desire for knowledge she disguised herself in male attire, and, braving the fatal results of detection, dared to attend the schools of medicine forbidden to her sex. Among her instructors was numbered Herophilus, the greatest anatomist of antiquity and the first who dissected human subjects. After completing her studies, Agnodice preserved her disguise and practiced her chosen calling in the Grecian capital with great success, giving particular attention to the diseases of her own sex. The physicians of Athens becoming jeal- ous of Agnodice's great reputation and lucrative practice, summoned EARLY PRACTICE OF MEDICINE BY WOMEN. 193 her before the Areopagus, and accused her of abusing her trusts in dealing with female patients. To establish her innocence, Agnodice disclosed her sex, and her persecutors then accused her of violating the law prohibiting women and slaves from studying medicine, but the wives of the most influential Athenians arose in her defense and even- tually obtained a revocation of the law. The laws and customs of the Romans, as well as of the Greeks, were antagonistic to the entrance of women into the medical profes- sion, yet Galen, Pliny, and others have preserved the names of a few distinguished in the art of healing : Phpenarete, the mother of Socrates, Olympia of Thebes, Salpe, Sotira, Elephantis, Favilla, Aspasia, and Cleopatra. Of these, details are generally wanting. Scribonius Largus writes of an " honest matron " who cured several epileptic patients by an absurd remedy, and mentions having purchased of a woman a prescription for the cure of colic, the composition of which she had learned in Africa. Why Aspasia appears iu this connection is not perfectly clear ; the talented wife of Pericles, renowned as " a model of female loveliness," was doubtless too involved in affairs of state to undertake the absorbing cares of the medical profession. Cleopatra, the accomplished and luxurious Queen of Egypt, of whom so many marvels are related, is named among those women possessed of medi- cal skill ; she is rej)orted to have compounded cosmetics and to have written on the art of preserving beauty, but this statement is probably no more worthy of credence than that of the infatuated alchemists of the middle ages, who would persuade us that Cleopatra was the for- tunate possessor of the philosopher's stone and of the universal sol- vent. In proof of the former statement, they point to her personal at- tractions, unchanged by increasing years, and to her immense wealth ; in proof of the latter, they rely with confidence on the well-known fable of the solution of the costly pearl at the extravagant banquet to Marc Antony. In a Roman lady named Fabiola we find an early pi-edecessor of Florence Nightingale. She was of the illustrious house of Fabius, and was celebrated in the fourth century for piety and charity. She is to be held in grateful remembrance as the founder of hospitals in Italy, and she is said to have personally nui'sed the sick at Ostia. The establishment of hospitals is commonly credited to the Emperor Julian, 362 A. D., with whom Fabiola was contemporary ; perhaps she took an active part in the humane movement, and held a position analogous to that of lady manager in modern times.* Half a century later lived a woman justly distinguished for com- bining in one person a high degree of female loveliness, womanly vir- tue, and intellectual strength : though not occupied with the art of * Celsus, who wrote in the reign of Augustus (a. d. 1), mentions large hospitals where patients were treated with specific medicines. (Milligan's Ed., p. 14.) Seneca also refers to them as " valetudinaria." VOI-. XVIII. — 13 19+ THE POPULAR SCIENCE MONTHLY. healing, we can not pass in silence the accomplished Hypatia. Born at Alexandria in the latter part of the fourth century, the daughter of Theon, an eminent mathematician and philosopher, she soon excelled her father in these branches of learning. After profiting by profound studies under celebrated masters at Athens and Alexandria, she pub- licly taught philosophy at both these centers of culture. Gibbon writes of her, " In the bloom of beauty and in the maturity of wisdom, the modest maid refused her lovers and instructed her disciples." On Hypatia's inhuman murder at the instigation of the jealous Cyril and his fanatical followers, it is not here necessary to dwell. The practice of medicine by women obtained to some extent during the middle ages. Under the influence of Mohammedan rule, women were placed in excessive isolation, and it is not surprising to find under these circumstances that certain women were skilled in attending to the requirements of their own sex. Thus Albucasis, of Cordova, one of the most skillful surgeons of the twelfth century, secured the ser- vices of properly instructed women for assistance in operations on females in which considerations of delicacy intervened. Avicenna also, writing of remedies for diseases of the eyes, mentions a collyrium compounded by a woman well versed in medical science. On the whole, however, the number of women instructed in medicine among the Arabs was very small, owing possibly to the inferiority to which women were condemned by Eastern usages. In Christian countries the nuns as well as the pi'iests attended to the healing of the sick as an act of charity and piety. Abelard, in the twelfth century, permitted the practice of surgery to those of the con- vent of the Paraclete, over which Heloise presided. The most cele- brated of the learned nuns was Hiidegarde (a. d. 1098-1180), abbess of the convent of Rupertsberg, near Bingen on the Rhine. She compiled a sort of materia medica, which comprises a variety of superstitious remedies. Radegonde of France, the founder of a convent at Poitiers (died 587), the pious ascetic Elizabeth of Hungary (died 1231), Hed- wigia, wife of Henry the Bearded, and other women who devoted themselves to the care of the sick, may be properly regarded as praise- worthy exemplars of Christian benevolence rather than educated prac- titioners of medicine. In the famous school of medicine established at Salernura by Bene- dictine monks in the eleventh century, we find women taking an im- portant part. Ordericus Vitalis, in his " Ecclesiastical History " (writ- ten about 1130), relates that an abbot eminent in natural sciences-, and especially distinguished in medicine, visited Salernum in the year 10.59 for the purpose of discussing medical topics, and found no one erudite enough to reply to his propositions save a certain woman of great learning. This woman he does not name, but she is supposed to be the same as Trotula of Ruggiero, whose reputation at that period was world-wide. At Salernum, women were engaged in the preparation of \ EARLY PRACTICE OF MEDICINE BY WOMEN. 195 drugs and cosmetics, and in the practice of medicine among persons of both sexes : such were Abella, author of two medical poems ; Costanza Calenda, the talented and beautiful daughter of a skillful physician, under whose instructions she attained to a doctor's degree ; Mercuriade, author of several treatises ; Rebecca Guarna, Adelmota Maltraversa, and Marguerite of Naples, who obtained royal authority for practicing the medical art. (Beaugrand, in "Diet. Encyc. Sci. Medicales.") The ancient and honorable universities of Italy were, we believe, the first to recognize the capacity of women to give instruction of a high character. The University of Bologna, founded in 1116, was at- tended in the year 1250 by ten thousand students, engaged m the study of jurisprudence, of philosophy, and of medicine. " Here was first taught the anatomy of the human frame, the mysteries of galvanic electricity, and later the circulation of the blood." Here, too, were the earliest successful experiments in admitting women to occupy pro- fessorial chairs, for a long line of female professors taught in many departments of learning.* As early as the thirteenth century two women were numbered among the eminent professors of the University of Bologna, Accorsa Accorso and Bettisia Gozzadini, the former held the chair of Philoso- phy, the latter that of Jurisprudence. In the fourteenth century the lovely and learned Novella d' Andrea, daughter of a distinguished law- yer, often took her father's place in the professorial chair, and instruct- ed his students in law. Of Novella it is reported that she was so beautiful that she lectured behind a curtain, " lest, if her charms were seen, the students should let their young eyes wander over her exquisite features and quite forget their jurisprudence." The rival University of Padua, founded in 1228, had also its female representatives. Of these the most distinguished was Elena Lucrezia Cornaro. This in- teresting woman was born at Venice, June 5, 1646, and at a very early age exhibited an extraordinary capacity for acquiring languages. She was familiar with French, Spanish, Latin, Greek, and Hebrew, besides her native Italian, and had some acquaintance with Arabic. While endowed by nature with poetical and musical talents, she possessed at the same time great perseverance and capacity for serious studies, and discoursed eloquently on abstruse topics in philosophy, mathematics, astronomy, and theology. At the age of thirty-two, the University of Padua conferred upon her the degree of Doctor of Philosophy. Cornaro seems never to have held any public position, being naturally of a retiring disposition, and moreover exceedingly devoted to the order of St. Benedict. After acquiring a European reputation, she died at the comparatively early age of thirty-eight (1684). The beginning of the following century witnessed the birth of one * According to Madame Villari, whose papers on the " Learned Women of Bologna " furnish us with many of the succeeding data, there is to the present day no law prevent- ing women from graduating at Italian universities or taking professorial positions. 196 THE POPULAR SCIENCE MONTHLY. of the most gifted women tlie world has ever seen. Laura Caterina Bassi was born at Bologna, October 31, 1711. She was the daughter of a distinguished lawyer and litterateur, and at a tender age manifested extraordinary precocity, being able while still a child to translate flu- ently most difficult Latin and Greek. Encouraged by her father, she pursued her studies under the guidance of eminent masters ; she leai'ned physiology and medicine with the erudite physician Gaetano Tacconi, mathematics with Manfredi, and natural philosophy with the disciples of Gassendi, and she astonished these profound philosophers by her talents. Laura Bassi studied for the pure love of knowledge, and had no ambition to seek public honors, but, to gratify the pardonable pride of a father as well as the earnest desires of her instructors, she con- sented to support a philosophical thesis before a learned audience of professors. This event took place on the ITth of April, 1732, before she had reached the age of twenty-one years. The occasion was made one of festivity by the whole city, who turned out to do her honor ; the assemblage was presided over by two cardinals, Lambertini, after- ward Pope Benedict XIV, and Grimaldi. According to custom her thesis was opposed by seven learned men ; to these she replied in elegant Latin with great success and amid the applause of the distinguished audience. A month later the degree of Doctor was conferred upon her, and she was honored by a position in the Faculty of Philosophy. The Senate subsequently bestowed upon her the chair of Physics, and commemorated the event by striking a medal which bore her own portrait. She held the professorship twenty-eight years with marked success, paying particular attention to mathematics and physics, also to helles-lettres. Several academies of learning elected her to membership. In 1738 she was married to J. J. Veratti, a physician, and became in the course of time the mother of twelve children. A learned French litterateur who visited Bologna in her day thus describes her appearance : " Laura Bassi has a counte- nance slightly marked with sraall-pox, but of a sweet and modest ex- pression ; her black eyes are sparkling, yet tranquil, and she is serious and composed in demeanor without affectation or vanity. Her memory is tenacious, her judgment sound, and her imagination active." She died in the year 1778, at the age of sixty-seven. Laura Bassi does not seem to have pursued medical studies, and cer- tainly never engaged in practice ; but any account of the gifted women of Bologna who labored in this direction would be incomplete without a brief notice of Madame Veratti. Contemporary with this interesting woman lived another, less gifted but scarcely less renowned. Anna Morandi was born at Bologna five years later than Laura Bassi, and died four years earlier. She became the wife of Giovanni Manzolini, a poor, hard-working maker of ana- tomical models. Manzolini was an expert painter and modeler in wax, and was emj^loyed by one Lelli to construct a series of anatomical EARLY PRACTICE OF MEDICINE BY WOMEN. 197 models for the use of the professors in the Institute of Bologna. Anna not only aided her husband, but soon surpassed him in skill, and par- ticularly in that scientific knowledge upon which the success of their joint labors so largely depended. About this time Giovanni Antonio Galli, a skillful surgeon and Professor of Gynecology, opened a school of obstetrics in his house, and, encouraged by him, Anna began to lec- ture on anatomy to private classes. In these lectures she not only im- parted with peculiar talent the knowledge derived from her husband, but she also communicated many discoveries made by herself. So great was her skill in all dissections requiring delicacy of touch and minuteness of detail, and so clearly did she demonstrate both theoreti- cally and practically the wonderful structure of the human body, that she rapidly acquired a European reputation, and her lecture-room was frequented by students of all countries. In 1755 Anna Manzolini became a widow, and was left with very slender means of support, but her good qualities raised up friends who secured for her a comfortable subsistence. Though she received tempt- ing offers from other Italian universities, and even from England and Russia, she preferred to remain in her native city, Bologna. Not long after her husband's death she was appointed to the chair of Anatomy in the Bologna Institute. Anna Morandi-Manzolini enjoys the distinction of having been the first " to reproduce in wax such minute portions of the human body as the capillary vessels and the nerves." Her collection of anatomical models, still to be seen at the Institute of Science, bears silent testi- mony to her remarkable skill and accurate knowledge. " Her lectures w-ere delivered in the fragrant cedar hall which is one of the modern sights of Bologna and in which Lelli's anatomical wooden figures sup- porting the canopy over the professorial chair attract general admira- tion." In the anatomical gallery of the university is to be seen her portrait in wax, modeled by herself at the request of many admiring friends. Anna ]\[anzolini closed a laborious and honored life in 1774, at the age of fifty-eight years. The city of Bologna, in the middle of the eighteenth century, saw three gifted women simultaneously occupying seats in the faculty of its ancient university. Besides Laura Bassi and Anna Morandi-Man- zolini, of whom we have briefly spoken, Maria Gaetano Agnesi was equally distinguished. Maria Agnesi was born at Milan, March 16, 1718. At an early age she manifested a remarkable facility for acquiring languages, and when only twenty years old was able to discourse in French, Spanish, Ger- man, Greek, and Hebrew, besides her mother-tongue. She displayed marked ability also in philosophy and mathematics, and while still young sustained one hundred and ninety-one theses which were after- ward printed under the title " Propositiones Philosophicse." In 1748 Agnesi published a treatise on algebra, including the differential and 198 THE POPULAR SCIJENCE MONTHLY. integral calculus, in which she displayed wonderful judgment and eru- dition. This work (" Instituzioni Analitichi ") was afterward translated by Colson, the Lucasian Professor of Mathematics at Cambridge, and was used by the students of that university. In 1750 her father, who was Professor of Mathematics at the University of Bologna, fell sick, and she obtained permission of the good Pope Benedictus XIV to oc- cupy her father's chair. In person Agnesi is said to have been beau- tiful, modest, and of pleasing manners. Her severe studies overtaxed her delicate frame, and shortly after she renounced the world and took refuge among the Blue Nuns at Bologna. In this nunnery she lived several years a devotee and an invalid ; she died in 1799. While Laura Bassi taught physics, Anna Morandi-Manzolini anat- omy, and Maria Agnesi mathematics, in the Bolognese University, we might naturally expect the gentler sex to avail themselves of the opportunity of studying under their sisters' instructions. And such, in fact, was the case : the names of some of these students are recorded by the historian, many of whom received the degrees of Doctor of Philosophy and Doctor of Medicine. In 1799 Doctor Maria delle Donne appears as Professor of Medicine and Obstetrics ; Clotilda Tambroni was Professor of the Greek Language and Literature, from 1793 to 1808. To these names should be added those of Novella Cal- derini, Maddalena Buonsignori, Dorotea Bocchi (who was both doctor and professor), Christina Roccati, Ph. D., Zaffira Ferretti, M. D., Maria Sega, M. D., and numei-ous graduates of Padua, Pavia, Ferrara, and other Italian universities. Leaving the Italian Peninsula, which was so productive of re- markable personages, we will briefly examine the position of women pi'actitioners of medicine in other parts of Europe. Beaugrand states that the most ancient document extant relative to the organization of surgery in France forbids the practice of surgeons and oi female sui'geons who have failed to pass a satisfactory examina- tion before the proper authorities. This paper bears the date 1311. References to female surgeons appear again in an edict of King John in 1352 ; from these documents it appears that women exercised the function of surgeon under legal authority. At a somewhat later period we find the calling of physician followed by women in Spain, Germany, and England. In Spain, the Universities of Cordova, Salamanca, and Alcala honored many women with doctors' degrees. We note also the ap- pearance at Madrid in 1587 of a learned medical work entitled " Nueva filosofia de la naturaleza del hombre," and published over the name Olivia del Sabuco. Of this person, however, nothing whatever is cer- tainly known, and it has been conjectured that the name Olivia was a pseudonym assumed by some eminent physician. In Germany many women cultivated medical science : Barbara Weintrauben was an author of no great merit ; the Duchess Eleanor of EARLY PRACTICE OF MEDICINE BY WOMEN. 199 Troppau, Catliarina Tissheim, Helena Aldegunde, and Frau Erxleben are deserving passing notice. The last mentioned was one of the most successful female practitioners of the last centuiy. Her maiden name was Dorothea Leporin, but she is best known as Frau Erxleben. Frau- lein Leporin pursued her medical studies at the University of Halle, and obtained a diploma in 1734. She settled in the little town of Quedlinburg, at the foot of the Hartz Mountains, became the wife of the rector of the Church of St. Nicholas in the same place, industriously- practiced her profession, and became eminent for her skill and learn- ing. Her son, J. C. P. Erxleben, inherited from his mother a love of scientific pursuits and became a distinguished naturalist and professor in the University of Gottingen. In England, Anna Wolley and Elizabeth of Kent were occupied with the preparation of drugs as early as the seventeenth century, and both published works on medical subjects. In this hasty and superficial sketch of the history of the early practice of medicine by women we would not be true to the facts if we omitted mention of certain ignorant and vulgar women who as- sumed medical knowledge and medical skill to impose upon a too credulous public. That avaricious women, fond of notoriety and care- less of their reputation, should imitate the methods adopted in every age by unprincipled men, is not surprising^ though it may be mortify- ing. To this class belonged Louise Bourgeois, nurse to Marie de' Medici, the Queen of Henry IV of France ; though an ignorant char- latan, she acquired extraordinary influence over her royal patroness, and her career abounds in curious, eventful episodes. She was the author of several medical treatises on the diseases of women, one of which was published at Paris in 1617. A century later another female practitioner flourished, of whom women have no reason to be proud. In the year 1738 Mrs. Joanna Stephens proclaimed in London that she had discovered a sovereign remedy for a painful disease. Notwithstanding her gross ignorance and vulgar demeanor, she secured a large circle of patients from among the upper and wealthy classes, and, after enriching herself by enor- mous fees drawn from their credulity, she proposed to make her medi- cal discovery public in consideration of the modest sum of twenty-five thousand dollars^ A subscription was started for this pui-pose and enthusiastically taken up ; the clergy, lords, and ladies, with an inex- plicable infatuation, hastened to add their names to the list of sub- scribers. Failing, however, to raise so large a sum of money, Mrs. Ste- phens's friends obtained a grant of the desired amount from Parlia- ment. The certificate testifying to the "Utility, Efficacy, and Dis- solving Power of the Medicines," bears the date March 5, 1739, and is signed by twenty justices. These dearly purchased remedies were three in number, " a Powder, a Decoction, and Pills." The powder consisted of calcined egg-shells and snails ; the decoction was a dis- 200 THE POPULAR SCIENCE MONTHLY. gusting mixture of herbs, soap, and honey, boiled in water ; and the pills were made of "calcined wild-carrot seeds, burdock-seeds, ashen keys, hips, and haws — all burned to a blackness — soap and honey." Contemporary Avith Mrs. Stephens lived another impostor, Mrs. Mapp, sometimes known as " Crazy Sally of Epsom," and described as an "enormously fat, ugly creature, accustomed to frequent country fairs, about which she loved to reel, screaming, abusive, and in a state of beastly intoxication." This attractive lady was by pi-ofession a bone-setter, and was patronized by patients of rank and wealth, who sought her charily bestowed favors with ill-disguised contempt of her person. The town authorities of Epsom greatly esteemed Mrs. Mapp, or, perhaps we should say, highly valued the benefit the town derived from the influx of wealthy patients, and they offered her the sum of five hundred dollars per annum if she would continue to reside in the town. The fii'st half of this century has witnessed the career of a few women eminent in the art of healing ; in France Madame La Chapelle had an extensive gynecological practice, and Madame Boivin attained to such distinction that she was honored with the degree of Doctor of Medicine by the University of Marburg. In Germany Charlotte Hei- denreich and Fran Heiland, her step-mother, were similarly honored with doctors' diplomas. It is the glory of America that she is distinguished above all coun- tries not only as the cradle of liberty but also as the foster-mother of the intellectual advancement of women. Yet this has not always been the case ; in the early chronicles of the colonists (themselves refugees from persecution) we find, strangely enough, many laws of an exacting and repressive character, some of which were aimed directly at the ambition and zeal of women. In the famous Blue Laws of Connecti- cut the following curious entry occurs under the date of March, 1638 : " Jane Hawkins, the wife of Richard Hawkins, had liberty till the beginning of the third month called May, and the magistrates (if shee did not depart before) to dispose of her ; and in the mean time shee is not to meddle in surgery or phisick, drinks, plaisters or oyles, nor to question matters of religion except with the Elders for satisfaction." (" True Blue Laws of Connecticut," by J. H. Trumbull, 1876.) A hundred and forty years later we find marked progress in lib- erality in the State of Connecticut. As early as 1773, in the town of Torrington, Litchfield County, two women were greatly honored and much sought for on account of their remarkable skill as accou- cheuses. The first of these, Mrs. Jacob Johnson, to quote the historian of Torrington (Rev. Samuel Orcutt), was as thoroughly known and trusted in her profession as any physician that was ever in the town. " She rode on horseback, keeping a horse for the special purpose, and traveling night and day, far and near," to meet her engagements. "She kept an account of the number of cases she had, and the success EARLY PRACTICE OF MEDICINE BY WOMEN. 201 of the patients, and the new-comers, and of these last there is at least one livins: in the town. In the midst of her usefulness she was re- moved by death, and it became a great inquiry, ' AVho will take the place of Granny Johnson ? ' " This question was answered in the person of Mrs. Huldah Beach, daughter of Aaron Loomis, Jr., more success- fully than was anticipated. Mrs. Beach became as celebrated in her calling as Granny Johnson, and continued to attend to her professional duties until an advanced age. She was a woman of remarkably fine personal appearance and decided dignity of carriage, yet marked kind- liness of manner. Her intellectual strength and ability were percepti- ble to every one, and she in consequence commanded great respect in all classes of society, and won the confidence of the people so that but few calls were made on any other physician in her specialty, on the western side of the town. She also rode as far as Winchester, Goshen, and Litchfield. Dr. Orcutt, whose " History of Torrington " has furnished us with these particulars, remarks in this connection, " Many have imagined that, in the practice of medicine by women, a new era has arrived, but in this there is only a ' restoration of the lost arts.' " Our allotted task is completed, yet we can not close this address without a brief survey of the pi-esent period, in which the facilities afforded women in all branches of learning contrast strongly with the formerly wellnigh insurmountable impediments and obstacles. Women desirous of acquiring medical knowledge are no longer obliged to disguise themselves in male attire like Agnodice the Athe- nian, nor are practitioners liable to suffer the penalties of the law for their works of benevolence and charity. In 1880 the young woman with aspirations for intellectual culture finds open to her such excel- lent training-schools as Holyoke, Wells, and Rutgers, such- noble insti- tutions as Vassar, Smith, and Wellesley. Does she not shrink from contact with her brothers, she may gain entrance into many universi- ties, either expressly founded in a liberal spirit, as Oberlin, Cornell, and Ann Arboi-, or which have yielded to the steady pressure of pub- lic opinion, and now open their doors more or less widely to the gen- tler sex. To enumerate the latter would be tedious and unprofitable ; suflice it to say that even venerable and aristocratic Harvard has lately joined the number, and our own Columbia, should her President's views prevail, will not be slow to follow. The young woman who seeks intellectual training of a more tech- nical character, with a view to adopting a professional career, will find many avenues opening up with constantly increasing privileges and facilities. The student in art, thanks to the philanthi-opy of our ven- erable citizen, Peter Cooper, can, without incurring expense, acquire a knowledge of designing or of wood-engraving which will hardly fail to secure for her a competence. The student in biology will receive her share of attention at a summer school of science on our Atlantic 202 THE POPULAR SCIENCE MONTHLY. seaboard, or held in connection with some enterprising institution of learning. The student in pharmacy and chemistry can conduct her researches on an equality with men, or, if she prefer, in laboratories controlled and officered in large part by women themselves. The student in medicine now gains access to medical colleges in nearly every State in the Union, and the legitimacy of her pursuit as well as her ability to grapple with it gains increasing advocates. " She is no longer regarded as too good and too stupid to study medicine." The candidate for medical honors also finds in Boston, Philadelphia, New York, and Chicago, well-appointed schools of medicine especially adapted to her needs, with corps of trained and sympathizing instruc- tors ready to lend a helping hand. Looking across the Atlantic, we find countries so lately intolerant of the intellectual advancement of woman at last yielding, not always gracefully, to the inevitable. The little republic of Switzerland and the mighty empire of Russia have for many years manifested practi- cal sympathy with the cause ; and now, slowly yet surely, conser- vative England begins to recognize the fact that the Anglo-Saxon race, with its boasted love of liberty, has been neglectful of its duty to wo- mankind. To trace any more fully the history of the recent period does not fall within the province of our address ; we look to the pioneers of this movement who are still with us for an exhaustive and authen- tic record such as participators and eye-witnesses alone can supply. METHODS IX INDUSTEIAL EDUCATIOK* Bt Professor SILVANUS P. THOMPSON. SHALL we have a school in the workshop, or a workshop in the school ? Or what other combination can we devise that will per- mit mental and scientific training to proceed after the age has been at- tained at which serious manual labor must begin ? Hitherto we have been contented at most to organize night schools, evening classes, and so-called Mechanics' Listitutes for our apprentices, leaving it to their own caprice whether they chose to employ their leisure hours in self- improvement or squander them in self-indulgence. On the Continent of Europe somewhat different ideas have prevailed. In Belgium, Switzerland, Germany, France, and even Russia, there are innumerable examples of Technical Schools and Polytechnic Schools of all descrip- tions, which profess to teach with greater or less completeness the * Continuation of article from the September " Contemporary Review," entitled " The Apprenticeship of the Future," the first part of which was published in the November Monthly, under the title of " Education as a Hindrance to Manual Occupations." METHODS IN INDUSTRIAL EDUCATION. 203 elements of certain handicraft industries. Overlooking the extreme diversity of type that exists among such schools, we have been apt mentally to throw them all together, and to refer to the supposed sys- tem on which they proceed as " the Continental system," in contradis- tinction to our British system of training, as we are pleased to term our obsolescent institution of apprenticeship proper. Nothing could be more misleading than this classification. It arises from lack of in- formation as to the nature and work of such schools. It is not sur- prising, when such ignorance prevails, that the fallacy has in conse- quence been widely spread that the long undisputed superiority of British-made goods was due to the superiority of the British system. On the contrary, that superiority, which arose out of quite other eco- nomic causes, was the very thing which stirred up the Germans, Swiss, Belgians, and French to devise schemes for training workmen more efficiently and intelligently than was done in England, since only by such means could they hope to compete with her industries. Let the significant fact, that a very large proportion of the foremen of work- shops in our skilled industries are Germans or Belgians, attest the result of a higher technical training. Besides the innumerable Gewerh-schulen and Beal-schulen of Germany, where a general preparatory scientific and technical education is given, that empire can now produce a long array of trade-schools, sometimes organized as polytechnic schools, and sometimes devoted to particular trades, such as weaving, dyeing, or carpentry. In Switzerland such schools also abound ; and in the com- mercial centers of Belgium they exhibit an extensive and healthy de- velopment. In France there are the technical schools of Douai, Cha- lons, and Aix, the iScole la Martini^re of Lyons, the Horological School of Besan9on, the Apprenticeship School of Havre, where workers in wood and iron are trained, and twenty others, including five or six in or near Paris. The technical schools of Paris present, indeed, so much diversity in their several organizations and results that it would be ex- tremely difficult, even by going over a much wider area, to find so many difi^erent yet thoroughly characteristic types. To understand how completely different are the systems of organization by which it has been sought to solve this great problem, it would be necessary to pass from the Polytechnicum of Zurich — the Technical University, }'>ar excellence — to the Horological School of Besan5on, and from the iLunst-gewerhschulen of Munich and Nuremberg to the unrivaled Pedagogic School of Moscow, and even then the list of types would be less complete than that which is afforded by the schools of Paris. In that great capital, in addition to the Ecole des Arts et Metiers, the Ecole des Mines, and the £cole Centrale des Arts et Manufactures, whose portals open only to an older and better educated class of stu- dents, and the great schools of modern type, such as the Ecole Turgot, the College Chaptal, and the Ecole Commerciale in the Avenue Tru- daine, which qualify their pupils for commercial and mercantile careers, 204 THE POPULAR SCIENCE MONTHLY. there are a group of technical schools intended for those whose primary education is not yet, or only just completed, and in which not only theoretical technical instruction is given, but where systematic instruc- tion in some useful handicraft forms a necessary feature. From among these diverse types we select four, for each one of which its promoters claim that its practical success solves the knotty problem of the day. These four schools are the £lcole Gommiinale, in the Rue Tournefort ; the Institution de Saint Nicolas, in the Rue de Vaugirard ; the ^cole Professionelle, established by MM. Chaix et Cie. in their printing es- tablishment in the Rue Bergere ; and the £cole MunicipaU d^ Apprentis, in the Boulevard de la Villette. The first two of these may be said to exemplify, though Avith strik- ing diversity of method, Vatelier dans V'ecole, the workshop in the school ; the third is an excellent instance of the school in the work- shop ; while the fourth belongs strictly to neither type. The £cole Communale, situated in the Rue Tournefort, a crooked back slum behind the Pantheon, is the most recent of the group which we have selected. Founded in November, 1873, at the instance of M. Salicis, and with the coSjoeration of M. Greard, the energetic Director of Primary Education for the Department of the Seine, it is intended rather to prepare for than to supplant apprenticeships of a more rigor- ous type. The pupils of this school ai'e not apprenticed at all in the ordinary sense ; there is no contract, and they earn nothing. Most of them are very young — even as young as eight or nine years — nor have they yet completed their elementary education. If they stay out the prescribed three years' course, they not only get as good a schooling as in any of the ordinary elementary schools, but they will also have seen something of constructive industry. During the first two years they are sent to work /or a day at a time, in rotation, in one or other of the occupations of the workshop. An " apprentice " will thus have one day in the carpentei-'s shop at the bench or the lathe ; the next he will be learning how to forge a bolt ; the next he will devote to metal- turning— all his exercises being directed by practical workmen in charge of the shops. During the third year he will settle down to some one pursuit. The hours of actual labor are short, for the chief part of the day is devoted to lessons, only an hour and a half each morning and afternoon being given to manual labor. All learn drawing and model- ing. Every pupil works from drawings which he has previously made to scale : no matter what he does, whether he is making a mortice- joint, rabbeting a window-frame, or filing down an iron nut, it is always done according to a careful sketch made beforehand. No articles whatever are made for sale ; indeed, all commercial elements are scru- pulously avoided, and the objects given as exercises are hardly such as would serve a useful purpose : little joints of wood accurately squared ; little cones or cylinders turned with perfect truth of line. Here and there a more valuable article, a model of a crane in metal, or a model METHODS IN INDUSTRIAL EDUCATION. 205 system of beveled geariug- wheels ; but nothing more marketable. The genial director, M. Laubier, enters heartily into the work of his pupils. He has himself designed and executed many of their exercises — the plaster casts, the geometrical models, and the ingenious scholastic ap- pliances of the institution. He thinks his school to be the type of the elementary school of the future. He has need to be an enthusiast, to train successfully his fifty apprentices and his two hundred non-work- ing children on a grant not exceeding sixteen hundred dollars a year, salaries, tools, and materials included. He upholds the rotation system, believing extreme division of labor to be at this stage prejudicial to the development of the youthful faculties. He does not want to sell the produce of his workshops, as the construction of objects which would be made to sell would not afford so good a training for his boys. He admits that they do not work so rapidly as apprentices who have been brought up amid the hourly exigencies of trade ; but he adds that he prefers cultivating their intelligence to quickening mere manual dexterity ; that will come later. And what are the results ? " Our apprentices," says the director, " being at once fit for useful work on entering the factory, are less often employed to run errands ; they are better treated, steadier. I could tell you of young lads of fifteen who are actually earning two francs and a half, and two francs seventy-five centimes a day, and who in six months more will be jjaid as regular workmen." The Institution de Saint JVicolas, in the Rue de Vaugirard, is the oldest of the schools, having been founded in 1827. It is under the exclusive management of a religious guild known as the Frh^es des j^coles Chretiennes, who devote themselves entirely to education. In this truly remarkable establishment there are eight hundred and ninety boys, all children of artisans, all boarders. Of this number, about two hundred are apprentices who come here to learn their trade. None are admitted who can not already read and write. The greater part of the day is given up to manual work, only two hours being reserved for schooling on three days of the week, on the alternate three days the two hours are devoted to drawing. On entering the premises the vis- itor is first introduced into a sort of little museum, in which are ex- hibited articles made by the pupils of the establishment — a truly sur- prising collection to have been executed by little fellows from eleven to fifteen or sixteen years of age. Here there are picture-frames, bronzes, panels carved in oak, wood-engravings that would not dis- credit either the " Graphic " or the " Illustrated " ; farther on, in an- other handsome case, are telescopes, leveling instruments, a model engine, a saxhorn, and a trombone ; and, in yet another, some exqui- sitely neat engraved maps, some of them executed on commission for the Government, together with the medals they won in Paris, Vienna, and Philadelphia. A varied assortment it would seem, and indeed the system under which such works are produced is without a parallel 2o6 THE POPULAR SCIENCE MONTHLY. in this country. There are in the extensive premises of the school no fewer than sixteen ateliers, each let out to an aj^proved master or j^a- tron, who is usually also the proprietor of a separate business in the city. To him are apprenticed for a term of three, or in some .cases four, years some ten or twelve boys, all of whom at the end of that time will be able to take good positions as intelligent workmen. The trades thus taught are those of carpenter, wood-carver, turner in wood, optical turner, compositor, printer, wood-engraver, map-engraver (on stone), marble-mason, brass-worker, bookbinder, carver and gilder, clock-maker, portmanteau-maker, philosophical-instrument maker, and maker of wind instruments. The master of each separate atelier pro- vides the materials, devises the work of the apprentices, superintends its execution either personally or by an authorized contre-maitre, and to him belong the products of the workshop. Nothing is made in the shops that will not sell ; the apprentices learn the value not only of materials but of time ; and, though the works that successfully pass under their hands are graduated to their capacity and experience, they are precisely of the same character as those which apprentices in any ordinary workshop would have to undertake. The masters and fore- men of the various ateliers aj^pear to take great interest in their pupils, and pride themselves on the success of their instruction. " These boys," said the foreman of the portmanteau-makers, "when they leave this room know the whole mystery of their trade from end to end. They can take the brute materials, and from them evolve a finished article." The apprentices of this same shop will earn at once from five to six francs a day, instead of the two, three, or four francs usually earned by young workmen just out of their time. They work as quickly as other workmen, for they know from the exigencies of their particular work that time is money. Several of the^:)a^ro??5 and fore- men of the little w^orkshops are themselves former pupils of the estab- lishment. The apprentices earn nothing during their term of service beyond a little pocket-money when they are satisfactorily advanced. During the whole period of their apprenticeship their parents must con- tribute thirty francs a month for their board and lodging in the school. Great importance is attached by the Frlres to the complete isolation from exterior influences insured by this internment. The magnitude of the work will be understood when it is learned that the income and expenditure of this establishment amounted to about two hundred and thirty thousand dollars in the past year, the services of the fifty worthy Frh'es who conduct the school being given at a purely nominal rate. There is a large gallery in the building for drawing and model- ing, and excellent systems of instruction in model drawing and geo- metrical drawing have been here developed. Spacious refectories, commodious Av^ell-ventilated dormitories, and a large gymnasium form features of the school. The results of the system are significant. The aim of making intelligent workmen is really attained, and though the METHODS IN INDUSTRIAL EDUCATION. 207 pupils have learned but one metier, and are in general better adapted for small businesses than for large, their repute for steadiness, skill, and general intelligence is such that the patrons have little difficulty in placing their pupils when their term of apprenticeship is over, and usually in circumstances where their earnings are about the average. The same testimony is borne everywhere concerning the apprentices of this establishment ; and the writer was informed by M, Vever, President of the Syndical Chamber of Jewelers, of Paris, a gentleman greatly interested in the question of technical education, and possess- ing every opportunity of forming an accurate opinion, that the boys of Saint Nicolas are so much more intelligent and steady than the average of workmen that they are sought for by employers, and at the age of thirty have usually risen to the position of foreman or master. The third type of apprenticeship school is that of the Ecole Pro- fessionelle attached to the large and flourishing printing establishment of MM. Chaix et Cie. This school, founded in 1862 by M. Napoleon Chaix, receives two groups of pupils, the apprenticed compositors and the apprenticed printers of the house. The schoolroom and the ap- prentices' composing-room, though contiguous to and overlooking the great busy atelier of the firm, are distinctly separate from it. The ap- prentices, of whom there are between thirty and forty, devote most of their time to the practical work of composing, two hours a day only being allotted to lessons in the schoolroom. Apprenticeship lasts four years, during the whole of which time the apprentices receive wages rising from fifty centimes to two francs fifty centimes for the composi- tors ; and for the printers, who work at the machines in the great atelier under the direction of a responsible master, from seventy-five centimes to four francs fifty centimes a day. The teaching comprises a special primary course for those whose previous schooling has been insuffi- cient ; a technical course, including grammar and composition, reading of proofs and correcting for the press, the study of different kinds of types, engraving, and the reading and " composing " of English, Ger- man, Latin, and Greek — in the two latter cases from a purely typo- graphical point of view, without any attempt to understand or to trans- late ; lastly, a supplementary course which includes the history of printing, simple notions of economics, a little mechanics and physics, and a smattering of chemistry, dealing chiefly with the materials that they will hereafter employ — acids, oils, fats, carbon, soda, turpentine, etc. Everything is done with the utmost system. Every line set up by a pupil is, if possible, so much contributed to the current work of the firm ; and, as time exercises are frequent, the value of rapidity in work is learned. At the end of the apprenticeship the pupils elect — almost without exception — to become emjjloyees of the firm, and enter at once into the rank of participants in the yearly division of profits. Of nearly seven hundred persons employed, two hundred apd fifty-eight 2o8 THE POPULAR SCIENCE MONTHLY. are now participants, of whom about eiglity are past apprentices. A much larger portion are depositors in the caisse cVepargne, or savings bank, established by the firm, or are " insured " in its books. Even the youngest apprentices put by a portion of savings out of their small earnino-s. The principals of the house fear no strike now, as there are enough participants in the wealth of the house to carry on its business throueton of Tchfhyorms itself, where the third cervical vertebra presents a modification in which the ordinary avian saddle-shaped form appears as it were in the act of development from the bicon- cave ichthyic form. This memoir and those which will suc- ceed it have a weighty interest as contribu- tions to the doctrine of organic evolution. There is no other possible way of explain- ing the numerous facts than by this theory. Professor Marsh's discoveries are new de- monstrative proofs of the law, which he has done more to confirm by these fossil revela- tions than any other living man, or all con- temporary naturalists put together. It remains only to add that the volume in all its elements — paper, printing, draw- ing, and engraving— is superb. The illus- trations, all executed in New Haven, and by the most skillful hands the world aifords, are the perfection of art. Professor Geikie pays them the following high but deserving compliment : " They are strictly and rigidly scientific diagrams, wherein every bone and part of a bono is made to stand out so clear- ly that it would not be difficult to mold a good model of the skeleton from the plates alone. And yet, with this faithfulness to the chief aim of the illustrations, there is combined an artistic finish which has made each plate a kind of finished picture." Should the series of memoirs of the Pea- body Museum of Yale College, of which this is the first, be carried out on a scale and with a thoroughness here attained, it will form one of the great scientific monuments of the century. German Thought. By Karl Hillebrand. New York : Henry Holt & Co. 1880. Pp. 298. Price, %\.1b. In these six lectures before the Royal Institution of Great Britain, Professor Hil- lebrand has traced in outline the rise of modern German thought and its influence in forming modern German political life. The period covered by his review is that from the Seven Years' war to the death of Goethe, but he glances briefly at the part taken by the other nations in the work of modern culture, as an indispensable pre- liminary to the subject proper. His review leads him to a consideration of the Italian Renaissance, in which Italy led the way in breaking from the thralldom of media;val tradition and authority ; the reaction against the sensuous view of life that this introduced, which in Spain was expressed by the found- ing of the Society of Jesus, and in Germany by the Reformation ; and the passing to Eng- land and Holland, and later to France, of the leadership in the thought and spirit that have made modern Europe. Though Germany held an important place in the initial move- ment, she took but little part. Professor Hil- lebrand points out, in the subsequent prog- ress of it. She had been engaged in one of the most notable struggles in history, and came out of it prostrate. The Thirty Years' LITERARY NOTICES. 273 war not only left her in entire intellectu- al, moral, and material poverty, but it com- pletely broke the thread of her history, and threw her back full two hundred years. It was not until 1760 that she began " to react against the too absolute thought of France, and to begin the work of restoration on a sounder basis than that which Spain had tried to lay two centuries before." Her res- toration was due to two things — the Prus- sian state and the Protestant religion. The one has gradually molded out of an heteroge- neous mass of petty principalities a powerful state, and the other awakened thought, and furnished the conditions in which free in- quiry could thrive. The impulse to a large intellectual life came from without, but, once given, a literature grew up which has ex- panded into a rich and varied product. It has now become national in its tone and feeling, but at first it was purely individ- ual. It is the peculiarity of German liter- ature that it arose, not, as in other coun- tries, after a coherent state had been formed, but before, while yet the nation did not ex- ist, and Germany was but a collection of petty states. It had the task not only of responding to a national spirit, but of form- ing that spirit. At first, as Germany began to recover from the prostration of its pro- tracted war, the literature was but a soulless copy of foreign models, but with time it grew to be more and more national, and un- der the impulse of the Seven Years' war it took definite form, and prepared the ground for the generations of great writers which have finally placed Germany abreast of the other foremost nations of Europe. The three generations of writers who did the great lit- erary work of Germany were those born in the sixty-five years from 1715 to 1780, and which followed each other at periods of twenty years. In the first were Klopstock, Wieland, Winckelmann, Kant, Mendelssohn, and Lessing ; the second included Herder, Voss, Klinger, Burger, Goethe, and Schiller. The third and final generation gave to Ger- many the two Schlegels and the two Ilum- boldts, Rahel, Tieck, Schleiermacher, Nie- buhr, Savignj', and Schelling. The "two schools," says Professor Ilillebrand, " which from 1825 to 1850 influenced the German mind most powerfully, the school of Hegel and that of Gervinus, only continued, devel- VOL. XVIII. — 18 oped, summed up, applied, or contradicted the main ideas of the three preceding great generations." The period of the first two generations was the creative one, when Les- sing and Kant, Herder and Goethe and Schiller were leading German thought into new channels. The later period — that of the Romanticists — was essentially a reaction- ary one, a period in which the middle ages became the ideal. It was, however, a neces- sary one, and under its influence the past of Germany was brought into prominence, and this prepared the later generation for the constructive work of organizing the Ger- man state and arousing the feeling of pa- triotism essential to its success. When this task has been fully accomplished, Germany can again take up the work of intellectual progress and occupy hor place in the gen- eral movement of European thought. Pro- fessor Ilillebrand writes in a very agreeable style, and, though he is confined to a brief outline, he invests his subject with an in- terest that is sustained to the end. The Elementary Principles of Scientific Agriculture. By N. T. Lupton, LL. D., Professor of Chemistry in Vander- bilt University. New York : D. Apple- ton & Co. Pp. 107. Price, 50 cents. This little primer of agriculture for the public schools had the following origin : The Legislature of Tennessee passed a law au- thorizing the Superintendent of Public In- struction and the Commissioner of Agricul- ture to procure the preparation of a suitable elementary work on agricultural science, to be used in the common schools of that State. The Commissioner selected Dr. N. T. Lupton, Professor of Chemistry in the Van- derbilt University, to prepare the book, and this little volume is the result. As our pub- lic schools are constituted, it is perhaps as good an introductory book as could be got upon the sul)jcct. It is written in a clear and easy style, with the smallest possible amount of technical scientific talk that is consistent with a rudimentary exposition of agricultural principles. After some appro- priate opening remarks on the development of scientific agriculture, the author takes up the origin, composition, and classification of soils, the composition of plants, the compo- sition and properties of the atmosphere, and 274 THE POPULAR SCIENCE MONTHLY. the sources of plant-food and how it is ob- tained. This is the most purely scientific part, as all the explanations depend upon chemistry. The author then takes up the questions of the improvement of soils, the use of manures, mineral fertilizers, rotation of crops, and the selection and care of live- stock. This is the more practical portion of the book, and is full of well-digested in- formation which should be got early into the heads of farmers' boys. There is an appendix describing a few simple experi- ments, and then the customary questions to aid the teacher in the recitations. Summer-Land Sketches, or Rambles in the Backwoods of Mexico and Central America. By Felix L. Oswald. With numerous Illustrations. Philadelphia: J. B. Lippincott & Co. Pp. 425. Price, $3. This is a book of travel, adventure, and observation in a wild and picturesque region, upon which pen and pencil have been hith- erto but little employed. It is besides a scholarly study of the scenerj^, the natural objects, the art-works, and the habits and characters of the people that were met with, and it is full of acute reflections and an in- structive philosophy thoroughly imbued with the modern scientific spirit. Its style is, moreover, vivid, racy, crisp, and lively, so that altoirether the work mav be commend- ed to the reader as fresh, original, brilliant, and solid. Dr. Oswald was stationed at Medellin, near Vera Cruz, in 1867, as director of a military lazaretto. Transferred afterward to the Vera Cruz City Dispensary, he lost his health, and, having got a notion that the mountains of Mexico have great sanitary claims, he resolved to go there and if pos- sible reestablish his constitution. He ram- bled about for several years, and this vol- ume is one of the results of his experience. Dr. Oswald has very decided views in regard to some of the evil tendencies of civilization, and was very happy in the great region that has not yet been invaded by the destructive agencies of civilized life. The following extract from his introduc- tion, shadowing forth this idea, explains the production of the book, and illustrates the characteristics of the author's writing : In the course of the next eight years I ex- plored the highlands of Jalisco, Oaxact, Colima, and Vera Paz for the benefit of my own health or that of my employers, hut, like the Catalan farm- er, I found more than I sought. ludepeudence, in the political sense, and a healthy climate, might be found in the mountains of Scotland, and even of Old Spain ; but the new Spanish sierras can boast of a virgin soil, with primeval forests which offer a sanitarium to all who seek a refuge from the malady of our anti-nalural civilization —from the old marasmus which has spread from the Syrian desert to the abandoned cotton-fields of Georgia and Alabama. We vaunt our proficiency in the art of subju- gating Nature, but in the New World the same ambition has led to a very dear-bought victory which the countries of the East have paid with the loss of their manhood ; their wild woodlands have been tamed into deserts, and their wild freemen into slaves ; the curse of the blighted land has recoiled upon its devastators. In our eagerness to wrest the scepter from our Mother Earth, we have invaded her domain with fire and sword, and instead of increasing the interest of our heritage we have devoured the principal ; the brilliant progress of the vain god of earth la tracked by a lengthening shadow — the day-star of our empire is approaching the western hori- zon. Where shall it end? Mold, sandy loam, and sand, is Liebig's degeneration scale of treeless countries ; the American soil may pass through the same phases, and what then ? Will the sun- set in the West be followed by a new Eastern sunrise ? Shall Asia, the mother of religions, give birth to an earth-regenerating Messiah, whose gospel shall teach us to recognize the physical laws of God ? Or shall the gloaming fade into the night of the Buddhistic Nirvana, the final extinction of organic life on this plan- et ? It is not much of a consolation to think that in the latter case the nations of the higher latitudes might count upon a protracted twilight. The westward spread of the land-blight will drive the famished millions of the Old World upon our remaining woodlands, but the resources of the last oasis will probably be husbanded with Scotch canniness and Prussian systematism, and before we share the fate of the Eastern nations we may see the dawn of the bureaucratic mil- lennium, when all our fields shall be fenced in with brick walls, all rivers with irrigaiion-dikes, and all functions of our domestic life with ofli- cial laws and by-laws. My trust in the eternal mercy of Providence lets me expect another deluge before that time ; but the recuperative agencies of unaided Nature seem powerless against the greatest of all earthly evils. National and territorial marasmus are incurable diseases; the historical records of the Eastern Continents, at least, prove nothing to the contrary. The coast-lands of the Mediterranean were the plea- sure gardens of the Juventus Mundi, the Elysian Fields whose inhabitants celebrated life as a fes- tival ; and now ? Spain, southern Italy, Tur- key, Greece, and Persia have been wasted to a shadow of their former self; ghouls and afrits LITERARY NOTICES, 275 haunt the burial-places of the north African em- pires ; and no iuvocation can break the dcath- eluniber of Asia Minor. Acorns perish in the Boil which once nourished the oaks of Baehan; outraged Nature refuses to be reconciled. With the glory of the Orbis Romanus the s^pring-time of our earth has departed, and what America mistakes for the prime of a new year is but the lingering mildness of an Indian summer. The career whose swiftness is our national boast has led us upon a road which has never been far pursued with impunity ; the rapidity of the destruction of our tree and game production is far more unparalleled than the growth of our cities ; the misery of the Old World has not taught us to avoid its causes, and the history of its etfects will not fail to repeat itself. On the frozen shores of Lake Winnipeg and the inacces- eible heights of the central Kocky Mountains a few remnants of the old forests will probably survive ; but the great East-Americansylvaniais already doomed ; if we persist in our present course, our last timber-States, Maine, Michigan, and North Carolina, will be as bald as northern Italy in fifty years from now, and our last game will soon retreat to the festering swamps of southern Florida. The temperate zone of America will soon be the treeless zone, with a single exception. In the sierras of southern Mexico large tracts of land still combine a generous climate with a rich arboreal vegetation. Mexico, like our own republic, has her backwoods States, but their security from the inroads of the destroyer is guaranteed by better safeguards than their re- moteness from the great commercial centers. The ruggedness of the surrounding sierras, the supposed or real scarcity of precious metals, and the independent character of the aboriginal population, all conspire to make the alturas or mountain forests as unattractive to the imperi- ous Spaniards as they are inviting to freedom- loving visitors from the North. To my rambles and adventures in these altu- ras, to their scenic charms, their strange fauna and vegetable wonders, I have devoted this vol- ume ; but I have rarely touched upon the min- eral and agricultural resources of a region which should remain consecrate to the Hamadryads and their worshipers. The cities of the inter- vening "civilized" districts, too, I have only mentioned as wayside stations for the benefit of non-pedestrian tourists. New Spain makes no exception from the general rule that the nations of Europe have transformed their American de- pendencies after the image of their mother- countries, and only he who leaves the cities far behind can f irget that Mexico was colonized under the auspices of St. Jago and Ximenes. This collection of " Suramer-huid Sketches" is, therefore, neither a record of a pilgrimage to the shrines and cathedrals of Spanish America, nor a bid for the patronage of Southwestern land-agencies, but rather a guide-book to one of the few remaining regions of earth that may give us an idea of the tree-land eastward in Eden which the Creator intended for the abode of maukiud. lu the terrace-lands of western Colima and Oaxaca, near the head-waters of the Rio Lcrma and the mountain-lakes of Jalisco, and in the lonely highlands of Vera Paz, we may yet see forests that have never been desecrated by an axe, and free fellow-creatures which have not yet learned to flee Irom man as from a fiend. An Elementary Treatise on Analytical Geometry, embracing Plane Geometry AND AN Introduction to Gecmetry of Three Dimensions. By Edward A. Bowser. New York : D. Van Nostrand. 1880. Pp. 287. Professor Bowser has produced a very excellent text-book, and has successfully accomplished his object of presenting his subject in a clear and concise manner, suit- ed to the ready comprehension of the class of students for which it is designed. The demonstrations have been selected with re- gard to their being of recognized excellence, from all available sources, and when a line of proof could be simplified it has been done. The Minor Arts. By Charles G. Leland. London : Macmillan & Co^ 1880. Pp. 148. Price 90 cents. The regard in which decorative work of all kinds is at present held has given a commercial value to many of those minor arts which have been heretofore viewed only in the light of accomplishments, and pursued only as a pastime. A large field of remu- nerative and agreeable employment is thus opened up to numbers of persons who could in no other way use their time and abilities to such advantage. These arts are mostly simple, and can be learned sufficiently well to enable the student to do at least passable work with a fair amount of diligence and at an inconsiderable cost. With the object of presenting such practical instruction in the use of the materials and the kind of work that can be made from them as the novice needs, in a convenient and easily accessible form, Mr. Leland has prepared the present little manual. The volume opens with a consideration of leather-work, of which there are three kinds, that known as cuir bouilli, in which the leather is softened and then molded, stamped, or otherwise shaped ; sewed leather, and sheet-leather ornaments, such as leaves, flowers, etc. Mr. Leland de- votes his attention chiefly to the first kind, which he shows is capable of producing in 276 THE POPULAR SCIENCE MONTHLY. a very simple way many elegant articles. la the chapter on porcelain-painting, the character of the pigments, the mode of draw- ing on porcelain, and the kinds of glaze pro- duced are brietiy touched upon. Simple in- structions are given in the chapter on wood- carving, as also in the one on molding in plaster and gelatine. Other chapters treat of designing and transferring patterns, sten- ciling, mosaic-work, repousse-work, and sil- ver-chasing, and some minor manufactures not in themselves of sufficient importance to be given a separate place. The volume closes with a collection of useful receipts of cements, etc. The Textile Record of America. By James W. Nagle & John W. Eyckman. Published monthly at Philadelphia, $3 per year. This is a handsomely printed thirty-six- page monthly journal devoted to the inter- ests of those engaged in producing textile materials and in weaving them into fabrics. The first and second numbei'S, for Septem- ber and October of this year, have varied tables of contents, and the journal promises to be very serviceable to the trade of which it is the exponent. It is under the editorial direction of Mr. Lorin Blodget, and is, like everything else published in Pennsylvaaia, thoroughly protectionist in creed. A depart- ment devoted to coloring-improvements, both in dyes and their use, is conducted by Dr. Alfred L. Kennedy. Diseases of the Throat and Nose. By MoRELL JIackenzie, M. D. London : Vol. I. Philadelphia: Presley Blakis- ton. 1880. Pp. 570. Price, $1. This is an American reprint of the val- uable work of Dr. Mackenzie, of London, whose long experience and extensive ac- quaintance with diseases of this class emi- nently fit him to treat of them. The work is addressed to the profession, and is, as it professes to be, a systematic treatise upon the subject. The matter of this first vol- ume is arranged under the three headings of "The Pharynx," "The Larynx," and "The Trachea." Under each the anatomy of the organ is first considered, next the instru- ments used in operating upon it, and the diseases to which it is subject, and the meth- od of treatment. The complete work will be in two volumes, the second treating of the diseases of the oesophagus, nasal cavi- ties, and neck. This volume is now in press, and will shortly appear. Memoirs of the Science Department, Uni- versity OF ToKio, Japan. Vol. Ill, Part I. Peport on the Meteorology of Tokio for the Year 1819. By T. C. Menden- hall. Published by the University. Gov- ernment Printing-office. 1880. Pp. 42. This memoir comprises the meteorologi- cal observations made at the observatory of the University of Tokio during the year 1879. The results are tabulated, and nu- merous charts show graphically the varia- tions in temperature, in barometrical read- ings, force of wind, etc. Professor Menden- hall does not consider that any general con- clusions can be drawn from observations ex- tending over such a brief period of time ; but, as they are to be continued, the data will in time be collected from which such conclusions can be safely drawn. The ob- servations of the barometer and thermome- ter were made three times a day, and those on the direction of the wind at more fre- quent intervals. They were made by Japan- ese under the direction of Professor Mcnden- hall, and every care has been taken to have them accurate. The volume is issued in excellent style, and is entirely of Japanese manufacture. PUBLICATIONS RECEIVED. L'Annee Artistique (The Artistic Year). The Fine Arts in France and Abroad. By Victor Champier, Secretary of the Museum of Decora- tive Arts. Second Year: 1879. Paris : A. Quau- tin. 1880. Pp. 644. Repertoire Politique et Historiqne (Political and Historical Repertory): containing a Politi- cal Review of the Year. Fourth Year : 1879. Published under the direction of M. Charles Val- fi-ambert. Doctor in Laws, Advocate of the Court of Appeals of Paris, Chevalier of the Legion of Honor. Paris : A. Quautin. 1880. Pp. 592. L'Annee Archeologique (the Aicheological Year): Archeological Calendar, Centenaries, Re- view of the Year in France and Abroad. By Anthvme Saint- Paul. Year 1879. Paris: A. Quantin. 1880. Pp.340. Susar Analysis: a Description of the Meth- ods used in estimating the Constituents. By M. Benjamin, Ph. B. Illustrated. New York. 1880. Pp. 18. Plan of the Cerebro-Spinal Nervous System. By S. V. Clevenger, M. D. Illustrated. Chicago. 1880. Pp. 39. The Trenton Gravel and its Relation to the Antiquity of Man. By Henry Carvill Lewis. From the " Proceedings of the Academy of Sci- ences of Philadelphia." Pp.16. Notes on the Management of Orthopedic POPULAR MISCELLANY. 277 Cases. By V. P. Gibney, M. D. Louisville, Ky. 1880. Pp. 9. Perinephritis : Remarks on Diagnosis and Prognosis. By V. P. Gibney, M. D. Chicago. 1380. Pp. 30. Science Education : an Address delivered at the Couiraoncement of the Agricuhuriil and Me- chanical College of Alabama. By William Le Roy Brown, LL. D. Auburn, Ala. 1880. Pp. 1(}. The Unification of Science. By Alfred Arnold. St. Augustine, Fla. la^O. Pp. 15. On Rotting Wood. By Professor William n. Brewer, of Yiilo College. Read Ijefore the Amer- ican Public iiealth Association, November 19, 1879. Pp.3. Culture of Sumac in Sicily, and its Prepara- tion for Market in Europe and Ihe United States. By William McMurtrie, Ph. D. Special Report No. 2(i, Department of Agriculture. Washing- ton : Government Printing-Offlce. With 8 Plates. 1880. Pp. 18. Tide Tables of the Pacific Coast of the United States. Pp. 63. — Tide Tables of the Atlantic Coast of the United States. Pp. 129. United States Coast and Geodetic Survey Office. Wash- ington: Government Printing-Offlce. 25 cents each. Quarterly Report of the Chief of the Bureau of Statistics, Treasury Department. Three Months ending June 30, 1880. Washington; CJoverument Printing-Offlce. 1880. Pp. 92. Medical Hints on the Production and Manage- ment of the Singing Voice. ByLenn