COLUMBIA LIBRARIES OFFSITE HEALTH SCIENCES STANDARD HX64099555 QP45 .H66 The vivisection ques RECAP '"I ; ; \ ^ 1 1 4 : i ^;> /Z- /' Columbia ®ntt)er^itp intI)e€itpoflfUjgork CoUege of ^fjpsiiciang anli burgeons! Hitirarp Digitized by tine Internet Archive in 2010 witin funding from Open Knowledge Commons (for the Medical Heritage Library project) http://www.archive.org/details/vivisectionquestOOhodg Reprinted from Appletona' Popular Science Monthly for September and October, 1896. THE VIVISECTION QUESTION. By 0. F. HODGE, Ph. D., ASSISTANT PROFESSOR OF PHTSIOLOGT, OLAEK UNIVERSITY. I.— INTRODUCTORY. FOR about thirty years the vivisection question has been before the public in this country. Discussion has often been hot and bitter, both in the press and in society, and again it is upon us in exactly its old form. What are we to do with it ? What, so far as this country is concerned, has the controversy accomplished ? After careful reading of all the important literature upon both sides, it appears to me that nothing has been gained either way. Both sides are practically where they were thirty years ago, and the failure seems to be due to fundamental misunderstandings of the real points at issue. In several hundred antivivisection pub- lications I am unable to find a passage which reveals the least conception on the part of their writers of the real purpose which a physiologist has in his work. On the other side, while definite arguments have been advanced, no generous effort has been made to give the public a clear notion of what the physiologist in the study of health and the pathologist in the study of disease are driving at. Can something be said which shall do this ? Or must physiologists work on under the distrust and suspicion of society because their aims and purposes are misunderstood ? The real question at issue, moreover, has been buried under personalities and under matters of detail, themselves involved in bitterest possible medical controversy, and the merits of which no amount of discussion, but time and experiment alone, can de- termine. Only by freeing the argument entirely from these things, and by placing it upon higher grounds, can we hope for intelligent peace upon this contested field. What, then, is the pur- pose of biological science ? Man finds himself in company upon the earth with an infinite number of living things, and he has found it of inestimable value to learn something about this maze of life. The science which COPTMGHT, 1896, BY D. APPLBTON AMD COMPASTT. 2 THE VIVISECTION QUESTION. has come to embody this knowledge is now known as biology. It falls naturally into two great divisions : the study of the form and structure of organs and organisms — anatomy or morphology — and the study of the functions, of the actions, which the organs per- form. This is physiology. Dividing further, physiology falls into the sciences of healthy action, physiology proper, and dis- eased action, pathology, from Tra^os, a suffering. It is evident that for the study of form alone the dead body is in general suffi- cient. But for the investigation of the activities of health and disease it is as evident that the physiologist and pathologist re- quire vital action as much as the chemist requires chemical action or the physicist requires motion. It is continually being urged that the dead body is sufficient for every scientific purpose. As well say that the dead body is as good as a live man. It would be precisely as reasonable to agitate against driving live horses, contending that dead ones will go just as fast, as to oppose the use of live animals for physiological or pathological research. And those who make this claim prove conclusively that they have no conception of what the word physiology means. Of all physical Nature nothing is of greater importance or touches man more closely than just this thing, life. The study of form, anatomy, is little more than a dead stepping-stone to this science of the processes of life, physiology. Young as it is, no sci- ence has attained results of greater value and none gives brighter promise for the future. In a word, the faith, hope, and charity which inspire this science are to learn enough about the laws and possibilities of living Nature, to do away with all disease and premature death, and to make all life as full and perfect as these laws will permit. This is the inspiration of biology. Is it base or unworthy ? And it is not Utopian. It is possible. The end may not be attained for a hundred years or a thousand. That depends upon how much faith men have in it and upon how much effort they are willing to devote to it. But it will come as surely as the world moves. Take for a moment a broad view of our situation in this re- spect. Nearly one half of our people are dying before the age of forty-one, almost all of disease, curable or preventable, did we but know how. This goes on with our standing army of physi- cians, over one hundred thousand strong, on duty day and night. It looks discouraging, and an eminent physician has himself said that a doctor is like a man blindfolded, striking about with a club, almost as likely to hit his patient as the disease. Our only hope, therefore, must lie in more knowledge of the laws which govern living Nature. Without this, as well attempt to stay the storm and tides of the ocean with straw as the currents of disease and the course of Nature with doctors. If we could get before un- THE VIVISECTION QUESTION. 3 prejudiced, thoughtful people some idea of the magnitude and scope of medicine and its importance to human and to all animal life, together with some faint conception of the moral forces im- pelling to the pursuit of those sciences which underlie medicine, in the light of these ideas the vivisection question would wholly disappear. More than two hundred and fifty years ago, in the town of Schaifhausen, a German anatomist was engaged in studying the anatomy of the human body. The people loathed him as one pos- sessed of the devil. They told him, in the words of an old super- stition, that the stain of human blood he could never wash from his hands. His reply was, " I can wash the blood stains from my hands with a basin of water, but the stain of ignorance of anatomy can not be washed from the medical profession with all the water of the Rhine and the ocean." * Wepf er spoke of anatomy. Anat- omy must precede physiology and pathology, as the structure must precede the function it is to perform. Thus Anatomy must pre- pare the way for physiology, and to some extent she has fulfilled her mission. But were a Wepf er to arise now, he would say, " The stain of ignorance of physiology can not be washed away with all the water of five oceans." I doubt, however, whether a modern Wepfer would lay the burden of blame at the door of the medical profession. It is everyday talk that physicians must lower their practice to the ignorance and prejudice of their patients. The idea of " magic " cures is still too deeply rooted in the average mind, and a doctor must " dose " a large proportion of his patients to satisfy this craving. At no time in the history of medicine has there been such a craze for patent medicines as now, and in no country is the situation so bad as in our own. We are the laugh- ingstock of all Europe in this regard. In Germany apothecaries are prosecuted for advertising and selling American patent medi- cines. What hope, then, is there for rational medicine in a coun- try that spends yearly hundreds of millions for worthless or harmful " patent medicines " and quack doctors, and but a very few paltry thousands for the advancement of physiology — and worse still, among a people who are as completely and just as in- telligently satisfied with quack nostrums as men were in the dark ages with amulets and signatures, the moss scraped from a human skull, the powder of dried toads, or the hair of a saint ? f In a na- tion of popular rule, the only hope seems to lie in scientific educa- tion of the people. How this is to be attained is a most difficult problem. The people will not educate themsel ves. Against such * Rudolf Virchow. Archiv fiir pathologische Anatomie und Physiologic, vol. clixxv. p. 375, Berlin, 1881. f George F. Fort, History of Medical Economy during the Middle Ages, London, 1888. 4 THE VIVISECTION QUESTION. education are naturally trained all the resources of quackery, whose trade would be gone. And where free expression is accorded to all alike, progress must be made in the teeth of ignorance too dense to have any conception of its own depth, and in the face of brawling charlatanry and screaming fanaticism. With nearly half our people dying before or about the prime of life, this is the situation. To teach ideas of cause and effect with reference to matters of health and disease, to inspire at least a willingness to heartily co-operate in efforts to control the causes of disease, our public-school system seems well adapted. But even here there is a serious tendency to hamper and restrict the proper teaching of physiology. II._VIVISECTION FROM THE STANDPOINT OF RELIGION AND MORALITY. If vivisection is impious, immoral, or demoralizing, it must be abandoned as a method of research, and further discussion on grounds of utility is precluded. Hence this aspect of the subject must receive our first attention. Scarcely a paper appears against the practice of vivisection which does not contain solemn appeals to the Deity. These are too sincere to be ignored. In fact, the most active supporter of the agitation in England would confine the discussion wholly to these grounds, and invites us to " leave, then, utility alone, and all the weary controversy which hangs upon it." With the help of God, it (the national conscience) will yet abolish vivisection.* A recent expression of the American Society is as follows : Resolved, That we, the American Antivivisection Society, believe vivisection to be morally wrong ; to be distinctly opposed to the intent of a beneficent Creator, who wills the happiness of all his creatures ; that we should, as Christians, unite in every effort for its suppression, and, as the best weapon of the Christian is prayer. Resolved,] etc. The argument has been cast by Cardinal Manning into the following syllogism: Truth of Nature must be sought only by methods in harmony with the perfection of Nature^s God. Mercy is one of the perfections of God. Vivisection is not in harmony with perfect mercy. J Therefore truth must not be sought by vivisection. How the worthy cardinal knows that vivisection is not in harmony with God's perfect mercy he nowhere explains. This is the all-important question. If this proposition is true, vivisection is impious, and must be abandoned immediately, no matter what its value to science, or utility to mankind. * Miss F. P. Cobbe. A Charity and a Controversy, London, 1889, p. 4. f American Antivivisection Society Report, 1892, p. 19. X Manning. Annual Address, Victoria Street Society, March 29, 188Y. THE VIVISECTION QUESTION. 5 Clearly the only way to find an answer to this question is to go to Nature itself and examine the principles upon which God has deemed it wise to order the living population of the world. Doing this, we find living upon the world at present at least 272,090 different species of animals, the number of individuals in each species being beyond computation or expression. We also know that 39,925 species, with their countless numbers of indi- viduals, have succumbed in the struggle for life and become extinct.* Now, it has been ordained, in the perfect mercy of God, that each individual of this innumerable population be born, live for a little time, and die. With many species, birth itself is painful. With all, life is a continuous struggle and terminates in what is commonly called "the agony of death." Few, at least of the higher animals, struggle out the full measure of their days and die in peace. The vast majority are starved to death, or famished and scorched to death by heat and drought, buried in the burning debris of volcanoes or in snows and frozen to death, or are beaten to death by hail or drowned in floods. And in and through all this is the desperate struggle to find a grain of food, a drop of water, a little shelter, a foothold in the flood, a way out of the fiery hail or burning forest. But harsh as is the relation between animal life and the phys- ical world, still more severe are the relations of animals to one another. Here we see the weaker preyed on by the stronger mercilessly, and behold the array of vivisectional instruments — the teeth and jaws, the beaks and talons, the claws and fangs, developed for this purpose. Here the animals that escape the accidents of the physical world perish most miserably, are lacer- ated, torn limb from limb, are slowly crushed in serpents' coils or slowly swallowed alive. And again in all this is the last, prob- ably of many, flight for dear life, the last convulsive effort to tear loose from the teeth or talons. Certain plants, even, are carnivor- ous, and entrap and digest living animals. More than all this, among certain animals, the males tight to the death for possession of the females of the species. Still more terrible, many animals and plants become parasitic, and suck from day to day the life-blood of their hosts. Un- doubtedly the greatest distress to which the animal kingdom is subjected occurs under this head. Some of the many diseases producing microbes become established in the animal. The dis- * Leunis. Synopsis der Thierkunde, vol. ii, p. 1176, Hanover, 1886. The above is merely the number of species known to Leunis in 1886, and by no means the entire number inhabiting the earth. Lord Walsingham estimates that there are upward of two million species of insects alone. (Entomological News, April, 1890, p. 58.) 6 THE VIVISECTION QUESTION. ease ensues — slow, loathsome decay, sharp, convulsive torture, or the burning to death of fever. All this is going on in the sea and on the land and has been going on for geological ages upon a scale which baffles expression in number or quantity. And this is God's ordering of Nature in "perfect mercy." With it man has had nothing to do, since there is every reason to believe that it existed ages before he appeared upon the scene. Cardinal Manning goes on to tell us that he believes in Genesis ; but there we are told, " And God saw everything that he had made : and behold, it was very good.'' According to any estimate of the enormity of physical suffering which I have been able to find among antivivisection writers, the God who ordained such a scheme of Nature must be a monster of cruelty. What is wrong with the equation ? The Creator ? Nature ? Or the ideas of antivivisectionists ? Is it not true that the religion of a hermit's hut, a lady's parlor, or a pope's palace is apt to fit ill the problems of the wide world, and that we must go to Nature to study even religion ? This travail of the animal creation is the " Slough of Despond " for every philosophy but one. The biologist would agree with the Creator in pronouncing it " very good." He too has gained in some degree the divine point of view, and can see that out of the struggle comes the quickening to nobler form and higher life, and that, without this, life of any sort is scarce worth the living. Few who drive thoroughbreds ever pause to think of the flee- ing for life, through geological epochs, the kicking and biting, the hardship and training it has cost to give to the horse his beauty and strength, since the time when the fox- sized Eohippus picked his way among Eocene bogs. So with man, so with every form of life that has attained any height of development. The price has been great, but the gain is priceless ; and we would not give back, if we could, all the suffering the world has felt and revert to vege- tation and formless slimes. Examining a step further, is it not possible to imagine a more merciful dispensation of Nature ? Suppose all the " cruel " car- nivora should be exterminated or become vegetarian. Would we not then have the animal millennium of certain sentimental people ? No, far from it. The ensuing year would be the most dreadful in the experience of the animal kingdom upon the earth, and would end in death by starvation and disease of many more animals than are now annually appropriated by the carnivora. But suppose all manner of disease should be done away with — the millennium of scientific medicine ; the struggle for food would be only the more terrible, and it is more merciful to kill in a night, even by pestilence, than in a month by starvation and the kicks and butts of stronger animals. THE VIVISECTION QUESTION. 7 There is what is known as the " balance of natural forces." It is this that keeps the planets balanced in their orbits, and among animals it holds the species within the bounds which make for the greatest happiness of the greatest number. It is the plan of an all-merciful Creator, and man has never been able to suggest an improvement upon it, within the limits of physical conditions. From the above, we see that every animal life is cast into the world as an experiment, often of the severest and most painful type. In this lifelong vivisection. Nature provides no ether or chloroform, nor even chloral or morphine. By this very dispensation of Nature God clearly gives to man every sanction to cause any amount of physical pain which he may find expedient to unravel his laws. Not only this, the situa- tion places upon man heavy duties, which he is bound to perform. These we will consider in a moment. As far as biological science is concerned the whole argument may be summed up as follows : Biology is not an exact science like mathematics and physics. These sciences are exact simply because it is possible in them to obtain as many equations as there are unknown quantities to be determined. Hence, with the solution of all possible equations, every unknown quantity in these sciences may be exactly deter- mined. In biological sciences the case is thus far quite different. Here the unknown quantities are legion in every equation. Hence the extreme difficulty of any solid advance ; hence the many mistakes, the many disagreements. In the best of experi- ments it is only possible to mass one series of unknown quanti- ties against another series of unknown quantities so that they balance as nearly as possible, and then with our one unknown quantity, about which the experiment turns, make the best tem- porary solution of our problem possible. Thus the science must be content to proceed until the vast series of unknown conditions which influence life have been dealt with one by one. Thus, if the science is to advance, if we are ever to learn under what con- ditions life is most favorably pla.ced, we must vary the conditions in every possible way — i. e., experiment physiologically ; and, as we have seen, everything in the divine ordering of Nature is in complete harmony with this method, and bids man Godspeed in this great work. Thus far we have considered Nature as uninfl.uenced by the presence of man. Let man, a moral being, take his place among the animal creation, and at once there spring up moral relations between him and every living thing capable of feeling pleasure and pain. It becomes his duty to do all in his power to increase the happiness and to diminish the suffering of every sentient thing. But we do not sympathize with the Hindu who lay down before the starving tigress in order to save her life and the life of « THE VIVISECTION QUESTION. her whelps with his own. Man's first duty is to those of his own species. If wild beasts endanger the life of his wife or child, it becomes his duty to kill them by any means in his power, let the suffering be what it must. This is man's first step in the con- quest of any country. And .when he has rid the earth of the fierce carnivora, it becomes his duty to kill such numbers of the herbivora as will enable the rest to obtain food and enjoy life. This surplus man has always utilized for food and clothing. All this, however, is but his first step. He must tend herds and till the soil to support as many as possible of his own species. Even then his work is but just begun. If disease threaten the life of his child, is his duty any different ? Certainly not. It is as much his duty to exterminate the disease as to destroy the wild beast. To subdue the earth, " and have dominion over . . . every living thing that moveth upon the earth," was one of God's first and highest commands to man ; and it includes microbes as well as lions and tigers. At just this point we are met with the argument that there is no moral proportion between the amount of suffering caused by vivisection and the advantage gained. " Suppose it is capable of proof," says Lord Coleridge,* " that by putting to death with hideous torment three thousand horses you could find out the real nature of some feverish symptom, I should say, without the least hesitation, that it would be unlawful to torture the horses." Accepting the proportion as stated, we will have: Torture of three thousand horses is to knowledge of real nature of feverish symptom as power gained by such knowledge is to prevention of death annually from splenic fever, we will say, of many millions of cattle, horses, and sheep, and thousands of men in Europe. There is no very exact " proportion " between end and means, but Na- ture is too generous to insist on exact " proportions " when men study her laws aright. The difficulty with good people who reason out this "propor- tion " is that they fail to grasp the stupendous size of the prob- lems involved, the whole world over and through all time. France alone is estimated to lose sheep to the value of four million dollars annually from splenic fever, and in one district, Beauce, one hun- dred and eighty-seven thousand sheep are killed annually by it. In Russia, during 1857, it was reported that one hundred thou- sand horses perished from the disease. In other epidemics, the losses within small districts reach tens of thousands, and in one a thousand people caught the disease and perished, f * Coleridge. The Nineteenth Century Defenders of Vivisection, p. 8. f R. M. Smith. Therapeutic Gazette, November, 1884 ; and George Fleming. Vivisec- tion and Diseases of Animals. Nineteenth Century, 1882, p. 4*70. THE VIVISECTION QUESTION. 9 Or suppose it to be a " knowledge of the real nature of some symptom " of one of the fevers that are yearly causing in this country the premature death of nearly fifty thousand people,* and the knowledge gained saved the life of but one, the propor- tion would still stand approved in the minds of all humane peo- ple. I am aware that Miss Cobbe has said in effect, Our days are numbered, and I would not have my own or those of my friends spared or lengthened by the suffering of animals. This senti- ment is sanctioned by no code of Christian ethics. For all nor- mal, rational, and truly humane people the following statement of Prof. Davis is true beyond danger of cavil. He says : " When the brute's ordinary right to welfare, yielding exemption from inflicted pain, confronts man's right to welfare, it (the welfare of the brute) shrinks to zero and disappears." f In order to test the popular acceptance of this principle, I actually put the following question to twenty American women : " Let the suffering be any amount necessary, how many dogs and cats do you feel that you would give to save the life of one human being ? " Without exception, these women have answered, " I ivould give all the dogs and cats in the world." Contrast with this the following sentiments from the pen of a woman who is perhaps the most active agitatrix of antivivisec- tion in this country. She answers as follows : " How many hu- mian lives which you ' experimenters ' are so anxious (apparently) to prolong are really worth the time and trouble ? . . . Would the world not be benefited were they allowed to pass to another sphere, where perhaps the conditions would be more favorable to moral and spiritual advancement ?" Such perversion of human sentiment is little, if any, short of the pathological, and calls for no further comment. Thus is seen the impossibility of separating morality from utility. If the right of the animal stand in the way of human use, " it shrinks to zero." If one human life can be saved, any amount of animal suffering necessary is justified. With this noble sentiment we thus accept the burden of proving that the sacrifice of animal life has brought us knowledge by which the human life has been prolonged and the sufferings of humanity have been ameliorated. With this proved, it is clear that it may be as much the moral and religious duty of a man to vivisect, who has faith that be can advance the cause of humanity by so doing, as it is his duty to preach or teach who has equal faith in these occupations. We shall treat the argument for utility in * Compendium of the Tenth Annual Census, pp. 1708, 1*709. f Prof. Noah K. Davis. The Moral Aspects of Vivisection. North American Review, 1885, p. 217. lo THE VIVISECTION QUESTION. the succeeding chapter. Before passing on to this head, however, two moral questions, fundamental to the whole discussion, must be carefully considered. An assumption found in every, or almost every, antivivisec- tion argument is that vivisection must be demoralizing to those who practice or witness it. Neither fact nor proof is adduced. From beginning to end it is pure tissue of antivivisection im- agination, like the old assumptions against the first anatomists. The assumption is not only unfounded but thoroughly irrational. It would be precisely as sane to assume that a missionary who goes to preach among the heathen tends to become heathenous ; or that anything in the practice of surgery or medicine tends to blunt the sensibilities of men in these professions. Granting that there are brutal men in the medical profession, as there are in all others, carries no proof that their work has made them so. It may have made them decidedly more humane than they ever would have been without it. On just this point I have taken the pains to collect the testi- mony of experienced teachers of physiology in thirteen institu- tions in this country, where the greater part of our vivisectional work is done. In every case the moral effect of experimentation is claimed to be wholesome, and in no case have they any evi- dence of its being evil. I will quote from but one instance, the experience of a professor in an institution for the higher educa- tion of women. He writes : " In numerous cases students have entered the course with decided objections to the practice of vivi- section ; and in no case, so far as I know, have they left without the removal of their objections and the substitution for them of sound views as to the necessity and value of vivisectional work." The other question is one which touches the bed rock of human life : What is the use of living anyway ? It is Franklin's old question, " What is the use of a baby, unless it is to become a man ? *' but with the added question. What is the use of the man ? A good many people every year look their lives in the face in this way, and, deciding that this life is of no use or worse than no use, put an end to it. Furthermore, What is, or what may be, the value of a man's life work ? And how far have we the moral right to pass judg- ment as to the value or use of another's life or work ? With the earth reeking in carnage and with humanity and animate Nature writhing in pain, how is it possible to say that God has ordered Nature wisely and mercifully ? And taking Nature as we find it, what can man do about it ? One theory has always been that the forces of Nature and life are far too vast for man's feeble powers to influence for good or THE VIVISECTION QUESTION. ii for ill ; that Ws chief duty lies in resignation to fate. Directly- opposed to this is the spirit of modern science, which considers it man's duty to go to work and manufacture fate. What right, it would ask, have we to assume that the forces of Nature are diffi- cult of control until all the laws which govern them are investi- gated ? Numberless instances in the history of science prove that his powerlessness is a mere bugbear of man's own imagining. It may be so in all cases. If man will only put forth a reasonable amount of effort, it may not be so difficult to comply with the command, " Subdue the earth." Still, the old superstitions cling tenaciously to the best of men. A child sickens and dies, and we say, " It is the will of God, so let it be." What right has man to lay this flattering unction to his lazy soul ? The scientific spirit would say : " It is the ignorance of man. It is his duty to learn enough about this disease to pre- vent or cure it." In taking this position science simply accepts the universal principle that ignorance of law does not exempt from penalty, and hence would study the law under which the calamity occurred and, by obedience, escape the penalty in future. To conclude in a sentence the result of a chain of reasoning too long to even outline in detail, all the suffering and physical evil in living Nature finds ample justification for its existence if, serv- ing as a spur to man, it arouses him to use his intelligence and put forth every energy available to alleviate the misery of the world and improve its condition. In other words. Nature is ivisely ordered to give man plenty to do, and to do this work is one of his highest duties. How he is to accomplish it, depends upon the means he finds at hand, which prove themselves useful to his purposes. In passing to a consideration of the utility of scientific experi- mentation, it must be remembered that we are not discussing the question with infanticides, murderers, or would-be suicides. It can be considered only with those who believe that, after moral excellence, human life and happiness and freedom from disease are the most useful things in the world. in.— THE UTILITY OF VIVISECTION. ASIDE from the highest "use of science," its satisfaction of •^LX. man's intellectual wants and its influence upon his char- acter, science has many " practical " values connected with its de- velopment. And it is to these " uses " of physiological research that we will confine attention, bearing in mind that we are ad- dressing those who believe that, after duty, human health and 12 THE VIVISECTION QUESTION. happiness are the highest values in the world, and that the greatest evils in the world, after moral evil, are human suffering caused by disease and premature death. How much " use " humanity has for help in these regards may be seen from a glance at vital statistics. "Of 1,000,000 people starting out in life, 497,000 will die, almost all from disease, before reaching the age of forty-one." * We are losing yearly in this country over 302,806 children under five years of age.f There certainly is no " use " in this. A recent writer X has actually cited mortality statistics to prove the futility of vivisection. The figures do show that in England since 1850 certain organic diseases have been on the in- crease, despite the slight advance in our knowledge of them. At first blush this table given by Leffingwell strikes one as a serious argument against the utility of research. On closer inspection, however, it only reveals the astute cunning of this author in the selection of his diseases. Almost without exception these maladies lie very deep in the hereditary tendencies of the race, and we could not expect them to be checked and reversed in so short a time. With increase of wealth and advance in civilization the chance that defectives may leave enfeebled progeny is greatly in- creased, and that there has not been an even greater increase in these diseases is cause for congratulation. But even if the statis- tics would support the significance Leffingwell attaches to them, what are we to do about it ? The only courageous course would seem to be to acknowledge the extreme difficulty of the problems involved and attack them with redoubled energy. Over two thousand years of clinical observation and empiricism have prob- ably about exhausted possibilities in these directions, so that our only hope would seem to lie in experiment ; and the less prelimi- nary experimenting on men, the better. If Leffingwell had been able to prove from statistics that there is no curable disease in the world, he would have had a strong argument. As it stands, how- ever, it must be acknowledged to be the strongest possible argu- ment for the side of research. The chief point of unfairness of the table lies in Leffingwell's selection of diseases. Why confine attention to statistics of or- ganic disease ? In acute diseases, where we would naturally look for the first fruits of scientific work, the gain has been considerable. In support of this, we may quote a few passages from News- holme's Vital Statistics. On page 273 he says : " If these chil- dren " (the 858,878 born annually in England) " be traced through * Albert Buck. A Treatise on Hygiene and Public Health, vol. ii, pp. 328, 329. f Tenth Census Compendium, p. 1707. X Albert Leffingwell. Vivisection, p. 75, Boston, Mass., 1889 (date of introduction). THE VIVISECTION QUESTION. 13 life, the clianges in the death-rates occurring 1871-1880, as com- pared with 1838-1854, would result in an addition of 1,800,047 years of life shared among them ; and since this number of births occurs annually, it may be reasonably inferred that there is an annual addition of nearly 2,000,000 years of life to the community, the greater share in which mus be ascribed to sanitary meas- ures. ... In the decennium 1871-1880, the death-rate from fever fell from an annual average of 885 per million to 484, a decline of forty-five per cent" (page 183). For scarlet fever the decline be- tween 1875 and 1885 was forty-nine per cent (page 185). From tables, page 101, we see that the death-rate per 1,000 in 1838-40 was, for males, 23*3 ; in 1887, only 19*8 ; for females, in 1838-'40, 22-5 ; in 1887, only 17-8. From comparing death-rates for the ten years before and after 1872, the year of the passage of the Public Health Act, we find that " no less than 392,749 persons who, under the old regime, would have died, were, as a matter of fact, still living at the close of 1881. . . . Add to these saved lives the avoidance of at least four times as many attacks of non-fatal illness, and we have the total profits as yet received from our sanitary expenditure " (p. 127). " We may add that if the death-rates between 1881-1888 are included, the improvement becomes even more striking." Thus : Mean annual death- Record of years. rate per 1,000. Public Health Act, 1872. Ten years, 1862-'7l 22-6 Four " 1872-'75 21-8 Five " 1875-'80 20-79 " " 1881-'85... 19-30 1886 19-38 1887..... 18-79 1888 17-83* For Boston, 1892 23-3 " London, 1887 19*6 " Lowell, Mass., 1892 26-6 " Massachusetts, 1892 20-6f We are frequently met here by the statement that improved sanitary measures nave nothing to do with vivisection. But, in order to gain the passage of costly sanitary measures, sound rea- sons must be given ; these are drawn almost wholly from the pure sciences of physiology and hygiene, and in just those points which bear on public sanitation science owes much to experiment as an essential part. The truth of this we shall see more and more clearly as we proceed. * Arthur Newsholme. The Elements of Vital Statistics. London, 1889. f A Summary of the Vital Statistics of the New England States for the Year 1892. Boston and London. H THE VIVISECTION QUESTION. The most encouraging feature in the comparison of the new with the old tables of vital statistics is the decrease in child mortality. ' Newsholme, page 101, gives tables of annual death- rates by age-groups from 1838 to 1887. From this we see that whereas in 1838-'40, in every thousand infants born, 72'6 died under five years of age, in 1887 only 57'8 were lost — a gain of over twenty per cent. Abbreviating the table, we have, per thousand births : Age— to 5 years. 5 to 10 years. 10 to IB years. 1838-'40, died.. '72-6 5'7-8 ^■1 4-9 5-3 1887, died 2-9 A gain of 20-6 49-5 45-2 These things give us ground for courage and hope, but not for rest — not as long as diphtheria is annually taking from the homes of this country its 49,677 children ; not while fevers are yearly " baking to death " 126,332 of our people ; and while consumption is causing years of suffering and the loss annually to this country of 102,199 valuable lives. Were this wholesale slaughter the work of a national enemy or of visible wild beasts, the public would not be slow in its ap- preciation of any attempt to meet the common foe. But the struggle is none the less real, and the intelligence and often the courage and self-sacrifice required to carry it on are no whit less than in the struggles of a race to subdue a savage continent or a human enemy. With the conquest of all the continental areas assured to man, if war, according to the hopes and theories of some, were a thing of the past, the next great step in the develop- ment of the race must be this conquest of the forces of disease. A comparatively small branch of the human race has come to face the issue squarely on experimental lines, and to realize the fact that success can be achieved in no other way. The fate of the Hindus stands as a warning that even an Aryan strain may lapse into the abject imbecility of zoolatry and mysticism. The race that meets this stupendous issue, that succeeds in giving to men the laws by observance of which can be attained, not only freedom from disease, but also the development of the highest type of man, that race alone can carry out to its full perfection the evolution of mankind. In course of its development this race will be able to bestow incalculable benefits upon other races and upon even the animal species which it finds useful to pre- serve. THE VIVISECTION QUESTION. 15 IV.— THE ARGUMENT AS TO THE UTILITY OF VIVISECTION IN SPECIAL CASES. Attempts to prove or disprove the utility of vivisection by- special cases have needlessly complicated and embittered the dis- cussion. Matters involved in the warmest medical controversy have been freely introduced, and naturally an abundance of strong language has been at the disposal of either side. It must there- fore be distinctly understood as we proceed that this is not the place to settle medical controversies nor to write a complete his- tory of useful medicine. We are to deal not with medical con- troversy nor with medical history, but with pure argument — argu- ment to prove from special instances the use to humanity of vivisectional methods of investigating the processes of living Nature. This being our purpose, we must leave to experts all discussions of such things as antitoxine, hydrophobia inoculation, etc., and confine our attention to cases about which there is the least medical controversy and about which people generally agree. We will thus select classical cases, the older the better, and only so many as will serve to render the argument clear and to illus- trate best the methods of vivisectional work. The special cases of Harvey, Charles Bell, Magendie, and Claude Bernard have come to be an established feature in every discussion of this subject, and so many wrong impressions re- garding them remain uncorrected that we must consider their work at some length. A knowledge of the circulation of the blood, no intelligent per- son can deny, has been of great practical value to men. It affords a foundation for all laws of hygiene and for the practice of sur- gery and medicine. The first great step in the line of this discovery was made by Galen. " By ligating in a living animal an artery in two places, and opening ihe vessel between the ligatures, Galen demon- strated that the vessel contained blood. Thus by an experiment upon a living animal, a vivisection, the first great source of error, the supposition that the arteries contained air, was removed, the true nature of an artery demonstrated, and the modern theory of the circulation made possible." * Whatever may be the claims of Servetus and Csesalpinus, there can be no doubt that the one man to unite the observa- tions of his predecessors into an intelligible whole, to found his own observations upon experiment, in short, to discover the * H. C. Chapman. History of the Disco verj of the Circulation of the Blood, p. 12. Philadelphia, 1884. i6 THE VIVISECTION QUESTION. circulation of the blood as we now understand it, was William Harvty.* The claim is often made that Harvey discovered the circula- tion by " thinking," by " inductive reasoning," and not by vivi- sectional experiment. As well say that Columbus discovered America by thinking and not by experiment. Harvey not only thought out the circulation, which is a very small matter, but he demonstrated it to be a fact by innumerable experiments upon living animals, which is a very great m itter. Here, again, we must emphasize the fact that Harvey did not study, and could not possibly have studied, in dead animals "the motion of the heart and blood in animals." To found his great thesis on a broad basis of experiment, Harvey vivisected a great many kinds of animals, from his own person to " shrimps, snails, and shell- fish." Chapter I of Harvey's great work, De Motu Cordis et Sanguinis in AnimalibuSjf begins, " Cum multis vivorum dissectionibus (uti ad manum dabantur) animum ad observandum primum appuli quo cordis motus usum," etc. Chapter II is entitled Ex vivorum dissectione, qualis sit cordis motus. Chapter III is entitled Arteriarum motus qualis ex vivorum dissectione. Chapter IV is entitled Motus cordis et auricularum qualis ex vivorum dissectione. The argument that Harvey was led to his discovery by " rea- soning upon the valves in the veins," as stated by Boyle, is well answered by his translator, Willis, J who points out at some length that "when we turn to Harvey himself, in his works we nowhere find that he approaches his subject from the quarter now particularly indicated " (i. e., from the purpose of the valves in the veins). * Read J. H. Baas. Outlines of the History of Medicine. New York, 1889, pp. 52'7-530. Also Sprengel, in his Geschichte der Arzneykunde, gives Harvey the frontispiece in vol. It, and devotes forty pages (50-89) to his work of discovering the circulation of the blood. Also Haeser, Lehrbuch der Geschichte der Medicin, vol. ii, pp. 252-262, devotes eleven pages to " Discovery of the Circulation, Harvey." And when a man comes forward and says, " It is only our insular pride which has claimed for him the merit of the discovery," he brands himself as a person with w'hom it is impossible to reason (as does Lawson Tait, TTselessness of Vivisection upon Animals, p. 6). Any one desirous of investigating the trustworthiness of Tait in such matters can find him fully discussed, in a way he has not been able to answer, in the book Physiological Cruelty, by " Philanthropos," Appendix E, and also in Heidenhein, Vivisection, Leipsic, 1884, pp. 85 ff. f Harvei Opera, 1737, or The Motion of the Heart and Blood in Animals. Sydenham edition, Lo^ndon, 1847. X Willis. William Harvey, a History of the Discovery of the Circulation of the Blood. London, 1878, pp. 301 ff. THE VIVISECTION QUESTION. 17 Even Harvey was attacked during his life on tlie ground that the discovery of the circulation was of "no use" (Willis, p. 258), " because men still continued to die/' For Harvey the blood passed through the flesh {per partium porosifates), and not until the microscope was available was it possible for Malpighi to discover the capillary circulation in 1661. This he did in the exposed lung of a living frog. In recent years Claude Bernard * greatly advanced our knowl- edge of the circulation by demonstrating, wholly by vivisectional methods, that the flow of the blood is regulated by a nervous mechanism continuously acting to contract or dilate the vessels according to the requirements of each organ or part of the body. Thus it is seen that every important step in the advance of our knowledge of the circulation of the blood has been made by vivi- section and could not possibly have been made in any other way. Similarly, the testimony of Sir Charles Bell is constantly ad- duced to prove the futility of vivisection. Bell is the anatomist to whom, with Magendie and Johannes Miiller, we owe the first great advance in the experimental study of the nervous system. He first demonstrated, though in no thoroughly satisfactory manner, the twofold function of the spinal roots. It is true that Bell did say some things derogatory of physiological experiment about the beginning of this century. But it is also true that his actions speak louder than his words. By reference to his works, we find that Bell made this great discovery in the only way pos- sible — viz., by means of vivisectional experiments. He actually vivisected asses, kittens, rabbits, fowls, monkeys, and dogs, per- forming the same experiments for which Magendie has been so severely criticised.! Charles Bell was exceedingly sensitive upon the point of causing pain to animals, as is shown by several pas- sages in his works ; and it is certainly a strong argument for the necessity of vivisection that a man of his sensitive nature should be compelled to resort to this method in order to demonstrate the truth of his theories. It must bo remembered that he had no anaesthetics, and therefore his position can not apply to the present discussion of the subject. Were he operating to-day, with chloroform, ether, morphine, chloral, paraldehyde, cocaine, and other anaesthetics at his disposal, he need have had no twinges of conscience about the pain his experiments occasioned. Magendie completed BelFs work, placing it upon a firm basis by means of experiments for which he has been accused of most atrocious cruelty. It is sufficient to reply that Magendie, too. * Cl. Bernard. Le9ons sur le Diabfite. Paris, 1877, p. 43. f Charles Bell. Idea of a New Anatomy of the Brain. London, 1811. Transcribed by H. U. D., 1813. Also, Nervous System of the Human Body. London, 1830. 2 i8 THE VIVISECTION QUESTION. worked before ansesthetics were discovered, and when people's ideas about physical pain were very different from our ideas at present. And Magendie was, to say the least, as oblivions to his own suffering as he was to that of the animals he experimented upon. When cholera broke out in France, in 1832, he went as a volunteer into the center of the afflicted district, and afterward served in the great cholera hospital, the Hotel Dieu, during the epidemic in Paris, and for his heroism received the cross of the Legion of Honor * — " The fiend Magendie.'^ Take, for example, another great line of physiological work than which few discoveries have been of more practical value to human life. Upon a knowledge of the physiology of respiration we build and ventilate, or ought to, at least, dwelling and school houses, audience rooms, and hospitals. The first important discovery in this line was made by Sir Robert Boyle (1670), who found, by the use of his air pump, that if he deprived animals of air they died. He vivisected in this way kittens, 'birds, frogs, fish, snakes, and insects, f Boyle also discovered that by keeping animals in a closed reservoir the air became unfit to sustain life. Priestley, a century later (1772), continued Boyle's experiments by keeping mice in air-tight receivers until the air was vitiated and would no longer support life. He then tried to restore the air to its former condition : he rarefied and condensed it, heated it, exposed it to water and earth, and treated it in many other ways, each time testing it with living mice to ascertain whether it would again support life. All this was to no effect. In every case the mice died. Finally, he found that after plants grew for a while in the vitiated air, mice could again live in it. Thus was discovered the important relation between animal and vegetable respiration, and we now plant trees and lay out parks, and call them the " lungs of our cities." Two points must be emphasized here : first, that Priestley could not have done this with dead mice ; and, second, that no one except Lawson Tait and Miss Cobbe would have the hardihood to claim that he ought to have used live men instead of live mice, on grounds of moral rights, and from the fact that the physiology of man is " so different " from the physiology of the mouse. Turning to still another important line of scientific work, diseases of microbic origin are said to cause four fifths of the * J. C. Dalton. Magendie as a Physiologist. International Review, February, 1880, p. 120. The story of Magendie's repentance and distrust of vivisection, shortly before his death, has often been adduced against this method of research. After careful search through all the accounts of Magendie's life (thirteen in number), Dalton is able to say that there is no intimation of any ground for this idea. f Boyle. Philosophical Transactions, vol. v, pp. 2011-2065. THE VIVISECTION QUESTION. 19 sickness in the world. As an example of researches in this field, we may cite the classical work of Edward Jenner.* Jenner began to study in earnest the disease cowpox, and its relation to smallpox, in 1775. For twenty-one years he patiently investigated the subject, and found that no one who had once suffered an attack of cowpox was taken with smallpox, although frequently exposed. " Legends of the dairymaids " had told for generations that an attack of cowpox conferred exemption from smallpox forever after. Jenner might have told the same story ; but, if he had not proved the truth of his assertion by experiment, we might still have nothing but "legends of dairy- maids" and no vaccination. In May of 1796 Jenner began his experiments. He says (page 29) : "The more accurately to observe the progress of the infection, I selected a healthy boy, about eight years of age, for the purpose of inoculation for the cowpox." This inoculation was followed by an attack of the disease. But Jenner does not stop here. Again, he says : " In order to ascertain whether the boy was secure from the contagion of the smallpox, he was inocu- lated the 1st of July following with variolous matter immediately taken from a pustule. Several punctures were made in both arms, and the matter was carefully inserted, but no disease followed." Some might have called the discovery complete at this point, but Jenner realized that one case is not every case, and that he must repeat the experiment, which he did scores of times, even going so far as to endanger human life in order to establish the truth of his discovery. For he goes on to say (page 41) : " To con- vince myself that the variolous matter made use of was in a perfect state, I [at the same time that he inoculated a patient previously inoculated with cowpox] inoculated a patient with some of it who had never gone through the cowpox, and it produced the smallpox in the usual regular manner." Previous to the introduction of vaccination in London the average annual death-rate per million from smallpox was (News- holme, table, page ] 92) : l'728-'5Y 4,260 IT^I-'SO 5,020 1801-'10 2,040 beginning of Jenner's work. 18'72-'82 262 1885 1,419 1886 24 188T 9 * Edward Jenner. An Inquiry into the Causes and Effects of the Variolas Vaccinae, December 20, 1799. London, 1801. 26 THE VIVISECTION QUESTION. Germany now has the most efficient laws of probably any country for making not only vaccination bnt repetition at stated intervals obligatory. As a result smallpox is rapidly disappear- ing. In 1888 the deaths from smallpox in the entire empire amounted to one hundred and ten, less than 3'5 per million, and the majority of these occurred on or near the boundaries of other countries. We can easily appreciate the usefulness of this. Still, during this work Jenner was persecuted and abused. Jenner's experiments belong to the class of investigations which since 1850 Thiersch has made for cholera, Lister for in- flammation of wounds, Pasteur for rabies, Koch and Pasteur for splenic fever, M. Freire for yellow fever, Koch later for cholera, and has now begun to make for consumption. Thiersch's experiments on cholera, which caused the death of fourteen mice and proved that cholera is communicated by swallowing particles of cholera discharge, have been an important factor in the sanitary legislation of every civilized country. Two of the London water companies experimented with cholera-polluted water upon 500,000 people, causing the death of 3,476 human beings in 1853-'54. This is the popular accidental experiment which antivivisection writers tell us to wait for, and which they say is sent by Providence to teach men physiology. Thiersch made the same experiment upon fifty-six mice, the con- ditions being accurately determined and scientifically controlled, and with the death of fourteen mice gave the world more exact information about the contagion of cholera than all the cholera epidemics recorded in history. This is the scientific experiment which we are told should not be made.* The antiseptic method, which we owe in so great a measure to the vivisectional experiments of Joseph Lister, is past all reason- able controversy and we may refer to it here. It has come to be used in hospitals generally, and has reduced mortality from sur- gical operations to one tenth of what it was before. Any one who has seen even a few cases of antiseptic surgery will readily agree with Dr. Keen when he says : " Sir Joseph Lister has done more to save human life and diminish human suffering than any other man of the last fifty years." \ Still, Lister was obliged to leave England to continue experiment in his merciful work after the passage of the restrictive law in 1876. In the Tubingen Hospital died from amputation before intro- duction of Lister's method and after : * John Simon. Experiments on Life. London, 1881. f W. W. Keen. Our Debts to Vivisection. Reprint from Popular Science Monthly, May, 1885, p. 15. THE VIVISECTION QUESTION. z\ Per cent. Per cent. Oflowerlimb 43-5 3-2 Ofupperlimb 30-6 2-9* We miglit extend much further the list of useful discoveries which have depended for some essential part of their develop- ment upon vivisectional experiment ; but such is not our present purpose. The reader can find these amply discussed elsewhere. We would, however, at this point call special attention to the way in which a discovery of this kind is received. Jenner's smallpox inoculation was obliged to run the same gantlet of popular and professional favor and disfavor as Lister's discovery, as Koch's and Pasteur's are running now. Such discoveries are in even greater danger from ignorant and enthusiastic supporters than from learned opponents. The problems involved are very com- plicated. Exceptions of every kind occur — e. g., a person may have smallpox twice, and so, although vaccination protects in most cases," it does not in all; and, further, as Jenner himself says, " inoculation sometimes under the best management proves fatal." t In the case of one of these complications in London, Jenner has himself left a record in strong English of the way he felt. Writing to Moore in 1811 he says : " The town is a fool, an idiot, and will continue in this red-hot, hissing-hot state about this af- fair until something else starts up to draw aside its attention. I am determined to lock up my brains and think no more pro bono publico, and I advise you, my friend, to do the same, for we are sure to get nothing but abuse for it." J We are, however, discussing the utility of a method, and while we will not introduce Koch's treatment as an argument for the utility of vivisection until it has been perfected and the medical profession has reached a decision as to its value, we can hardly find a better example of the vivisectional method. Koch's method is that of Jenner perfected by using animals instead of men. His discovery in 1882 of the tubercle bacillus has already become of inestimable value in directing sanitary measures and in recog- nizing the earlier stages of consumption while cure is possible. This, we are told by an anti vivisection writer, **' was discovered by the microscope, not by vivisection."* How did Koch make this discovery ? It is true the microscope assisted as spectacles help to read. But Koch, in the examination of tuberculous matter, discovered a number of germs with the microscope. Which one of these * Heidenhaiu. Die Vivisection, p. 34. f Jenner, loc. cit., p. 5Y. X Crookshank, op. cit., fol. i, p. 139. * Ernest Bell, M. A. Weighed and Found Wanting, Victoria St. Society publication. 22 THE VIVISECTION QUESTION. caused consumption no number of microscopes could tell him. This had to be settled by most careful experiments. There are several steps in the process. The first is to identify all the differ- ent kinds of microbes found constantly in tuberculous bodies. For convenience we will call these microbes a, h, c, d. These are mingled together. The second step is to cultivate these germs in one test tube after another until perfectly "pure cultures" are obtained — i. e., nothing but a's in one, nothing but b's in another, and so on. Up to this stage he has not the least idea which of these is the germ of consumption. The only way he can deter- mine this point is by experimenting upon living animals. He must then inoculate a number of healthy animals, one with germ a, another with germ b, another with germ c, another with germ d. The four animals are now watched carefully. The animal inocu- lated with germ a, we will say, sickens and dies with unmistak- able symptoms of tuberculosis. Those inoculated with germs &, c, and d are not affected. He repeats the experiment several times, and if each time with the same result is justified in con- cluding that germ a is the cause of tuberculosis, while the other germs are harmless. This is but the first stage in the investigation. After the dis- covery of the cause comes the question. How can this cause be controlled ? How can its action be prevented ? Here, as Koch says, men have begun at the wrong end of the problem. Since the beginning of medicine the doctors have been experimenting upon men to find a cure for consumption. The problem here is too complicated, and in consequence little has been learned. Ex- periment must begin, he says, with the bacillus itself. We must grow it first in pure cultures in test tubes, in all manner of differ- ent culture media and under all conditions of temperature and light, in order to ascertain under what conditions it grows best and under what conditions it can not grow. We must next sub- ject it in the test tube to the influence of different chemical sub- stances, and when some compound is discovered to kill or hinder the growth of the bacillus in the culture, then the substance must be tried upon tuberculous animals to ascertain whether in their bodies as in the test tube it will act to kill the bacilli without in- juring the animal. When a substance fatal to the bacillus and harmless to the animal is found, with all due allowance for differences between the animal and man, it may be tested on man. This, in brief, is but one important line of research, and clearly it should be carried out thoroughly for every infectious disease. A single link in the chain of procedure requires absolutely to be welded by experiments upon living animals. With millions on millions of human beings and animals suffering and dying yearly TEE VIVISECTION QUESTION. 23 for lack of this knowledge, no truly humane person can for a mo- ment deny to an investigator the right to complete his work by introducing this link. In view of the stupendous values involved it is clear that any amount necessary of animal or human sacrifice and suffering is wholly justified. Whether unnecessary suffering is inflicted is a question which only the highest experts can adequately decide. Prof. Bowditch * has so thoroughly discussed the subject of pain caused by vivisection that we would pass it by without mention, were it not for the fact that the public mind has been of late so much abused by misstatement and exaggeration on this head. Prof. Yeo's estimate, the most reliable we have, is that in every one hundred experiments seventy-five are " absolutely painless," twenty are as " painful as vaccination," four, as " painful as the healing of a wound," one, as " painful as a surgical operation." The pain of vaccination is altogether trifling, and that of the healing of a wound after antiseptic treatment is also practically nil. This leaves but one per cent of all experiments as painful to any serious degree. During over ten years' active experience in three laboratories in this country and a number of the leading laboratories abroad, I have never had occasion to perform or witness an experiment of this painful class. Discovery of new anaesthetics and more recent methods of operation have doubt- less reduced the pain of experimentation even below Yeo's esti- mate. In all laboratories in this country, and equally abroad, I have always found ansesthetics adequately and uniformly em- ployed. In the recent discussions before the House Judiciary Com- mittee of Massachusetts upon the bill relating to inspection of vivisectional experiments in the medical schools and universities of the State, none of the petitioners for the bill were able to cite a single case, or the reasonable suspicion of a case, of abuse of vivisection, as having occurred within the State of Massa- chusetts, In order to obtain as reliable data as possible upon this point, I sent blank tables, arranged according to the table on page 24, to all the laboratories in Massachusetts where vivisec- tional experiments were likely to be made. Returns were kindly sent in from all the laboratories, and may safely be taken to represent the experimental work in the State during the year 1894^'95. * H. P. Bowditch, The Advancement of Medicme by Research. Science, July 24^ 1896. H TBI! VIVISECTION QUESTION, Number used. Painless. PADfPUi AS Animat.. Vaccina- tion. Healing of wound. Effect of poison. Disease, Frogs 866 23 25 146 465 22 95 30 3 845 19 25 61 18 91 10 3 4 50 150 '4 2 17 5 '4 2 Pigeons Rats ... Rabbits Guinea-pigs Cats 30 315 Does Mice 20 Squirrels ■ ' * Totals 1,675 1,0Y2 (64^) 204 (12-2^) 6 (0-4^) 28 (1-6^) 365 (21 -850 Contrast with this the 34,419 human beings who die of disease annually in Massachusetts. A general principle underlying vivisectional work is also re- vealed in the table, viz., that the lowest animal adequate for the purposes of the research be employed in preference to one more highly organized. This entirely negatives an assumption often advanced that animal vivisection tends toward human vivisec- tion. The whole tendency of modern physiology has been exactly the reverse. Animals have come to be used in order to save human beings from abuse.* In the very beginning of medicine every attempt to cure disease or alleviate suffering must have been, in the nature of the case, an act of human vivisection. A large proportion of modern medicine at present is equally in essence nothing more nor less than human vivisection, and it is only gradually, as elements of experiment and uncertainty are eliminated from remedial measures by more exact knowledge, that the practice of medicine becomes anything more than human vivisection, f A further argument against the utility of animal experimen- tation is based on differences between animals and men, which make it unsafe to apply results directly from the animal to man. A logical error is here involved; for, while there are physio- logical differences between different animals, to one point of dif- * The recent action of Dr. J. S. Pyle (A Plea for the Appropriation of Criminals con- demned to Capital Punishment to the Experimental Physiologist, Canton, Ohio, 1893), so far as I have been able to ascertain, is an individual matter, and can not be taken to repre- sent in the slightest degree the tendency of experimental medicine or the attitude of ex- perimental physiologists in this country. f The Zend-Avesta permitted a doctor to practice his art upon three heretics. If these all died or were made worse by his treatment, he was forbidden, on penalty of death, to fol- low his profession further. If they recovered, he might begin practice upon the faithful. — Sprengel. Geschichte der Arzneykunde, vol. i, p. 126. (Refers to Zend-Avesta, Part III, p. 336.) THE VIVISECTION QUESTION, 25 ference there are many points of close similarity. A difference in physiological function is technically known as an idiosyncrasy. These differences exist between individual men as well as be- tween different species of animals. A man who has had small- pox or measles acquires an idiosyncrasy which protects him from having them again. In some cases this difference exists from birth ; in others it is impossible to acquire it. Man himself be- gins life as a microscopical speck of living matter, and in his physical development passes through and beyond the lower stages of organic life. Hence the fundamental physiological processes and functions he has in common with the great body of living things beneath him. On this wider view physiological idiosyn- crasy becomes the strongest possible incentive to experiment. How is it that certain species have become wholly immune from certain diseases ? With the secret of this immunity discovered, it may be easy to induce a similar immunity in another species or in man. The conclusion which follows from the foregoing chapters bears directly upon a topic of considerable present importance, viz., that of legislative interference with scientific work.* With due appreciation of scientific achievements in the past, we must keep ever before us the fact that the hardest labors and richest harvests in science are still in the future. And every considera- tion of religion, morality, altruism, humanity, and utility urge to the prosecution of physiological education and research with una- bated energy. Hence no legislative action should be taken which could possibly offer hindrance or annoyance to either teachers or investigators. In accordance with the pernicious principle that a law can do no harm except to offenders, the English Parliament, in 1876, passed an act severely restricting vivisectional work. This action of England was promptly reversed by every other European na- tion where the subject was agitated, and by every State Legisla- ture in this country to which the matter has been referred. Within the past year this reversal has been reafiirmed in Switzer- land and in Massachusetts. The restrictive act in England served not in the least to abate the agitation and protect physiologists in their work, as was intended ; but, as an eminent English physi- ologist puts it, has " only tended to encourage the opponents of science in their vexatious interference." English antivivisec- tionists under this encouragement have shifted position from restriction to total abolition, and have increased the agitation. We have in this country at least three societies organized on the platform of total abolition of physiological experiments. The * For fuller discuseion of this topic see Bowditch, loc. eit, pp. 8-16, and appendix. ,26 THE VIVISECTION QUESTION. legislative measures advanced thus far by these organizations have been mild in the main ; but while they emphasize before the public the fact that their laws do not aim to " prohibit " experi- ments, they are also unguarded enough to speak of them as " the entering wedge for more radical measures in the future/' * Clear- ly, for medical and scientific faculties, for medical societies, and for all who have at heart the advancement of humanity and sci- ence, the strategic point at which to meet the enemy is the point of " the entering wedge." After conscientiously reading their literature for the past five years I feel warranted in saying that science has little to fear from the efforts of the antivivisection societies. Their methods of agitation would sink even a worthy cause. The real danger lies with scientific men themselves who entertain ideas of con- ciliation and comj)romise which will admit the point of the " en- tering wedge." Prof. Michael Foster has had the benefit of twenty years' experience in conducting a laboratory under restrictive legislation, and his advice should certainly carry great weight. He writes as follows : " My earnest advice " (to us in America) "is to straighten your backs, and, knowing that no legislation is necessary on grounds of humanity, and that all legislation is bad for science, strain every effort to defeat the agitation." f * Antivivisection, June, 1896, pp. 9 and 13. Aurora, 111. f Private letter from Prof. Foster to the writer, under date of February 1, 1896. DATE DUE DiLO 6 1>y« u ^ i I m L Demco, Inc. 38-293 lES QF45 Hodp^e H66 The vn vi Rftn-h -inn niic»o.+ -^ ..,„ q?4s- HU