Homo culture Part 5
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We must not forget that there is also a spectre of heredity. It is seen under different forms. The physician is often reminded by his patients that they have inherited this or that disease from father or mother, or an ancestor farther back. Now, there are few diseases which come to us directly through inheritance. In a majority of cases they are not transmitted. Even consumption is not. If we accept the modern theory of its origin, as we must, this plague is the result of germs floating in the air being introduced into our bodies by respiration, or in food, or through contact with abraided Surfaces. Those with weakened const.i.tutions are more liable to it than the strong, and a weakened const.i.tution may be inherited, for in this case the germ-plasm will not be well nourished and will suffer; but those thus handicapped in the race of life will get on far better by endowing themselves with knowledge and obeying the laws of life than they can by living under the shadow of the great spectre of heredity, and casting anathemas at their ancestors for not having done more for them. No doubt most of them have done the best they could; and if life is worth living, as most of us believe, we owe them many thanks for having brought us into the world.
THE SPECTRE OF HEREDITY.--There is a spectre of heredity of a more serious nature. It is the spirit of the dead past, with its mighty hand on society, on inst.i.tutions, on modes of life. Wendell Phillips used to tell a story, in his anti-slavery addresses, which ill.u.s.trates the evil effect of this inherited spectre. It ran in this wise. In an Eastern temple, an idol, in the image of a G.o.d, stood calmly on its pedestal. It was sacrilege to touch it with human hands; but rats having no such feelings of awe in the presence of a deity, began to gnaw about it in various places, yet no one was bold enough to remove it to a place of safety; and so the rats gnawed on and on, and built their nests within the sacred image. In time they loosened it from its firm foundation, and one morning, when the wors.h.i.+ppers came in to pay their devotions, they found their G.o.d had fallen prostrate on the floor. So it is sometimes with our inherited beliefs. They hold us back from progress like a heavy weight. We fear to remove them, for they are sacred inheritances, idols, G.o.ds, and so our inst.i.tutions decay, perish.
FOOTNOTES:
[106:A] Darwin did not regard this experiment as settling this question.
He had great affection, so to speak, for this poor, despised theory, and believed it would finally be established as in the main true.
EVOLUTION'S HOPEFUL PROMISE FOR A HEALTHIER RACE.
_Given before the Greenacre Conference of Evolutionists._
We have most of us in the past looked upon health as a matter of inheritance, or temperance and moderation in working, in eating and drinking; or as depending on climate; or exercise, or plenty of sleep, pure water and a morning bath, or some other secret, one or more of which is pretty sure to be in the possession of most persons who have lived long enough to have had some experience with those things that do them good or harm. All these agencies have great value; but I think few of us realize that nature, through the laws of evolution, has long been working to produce a brave and strong, healthy and hardy race of men and women by other methods than those health habits which most of us value so highly.
Nature has been doing this chiefly by two methods, and it seems necessary that I should say something about them in order to present my subject as I wish to present it. The methods to which I refer are those of s.e.xual and natural selection. It is to these two processes that we are largely indebted for race improvements--more perfect bodies, more active brains, and the high degree of health which a considerable portion of the race enjoys.
s.e.xUAL SELECTION.--By s.e.xual selection is meant that preference which the male or the female has for certain characteristics of the other s.e.x.
It also includes the advantages which the stronger and more capable male has over the weaker one in obtaining a choice, or, among polygamous animals, a larger number of females, thus allowing offspring to be generated by the most capable, and preventing the most incapable from procuring mates.
The first principle of s.e.xual selection, that of preference, would imply a considerable development of the intellect, and some taste, but I do not think it has had great influence on the lower forms of life. It is difficult to study the preferences of insects, for instance; but I have studied the moth of the silkworm, and could never observe that either male or female had a choice for any particular mate. They always appear to take the first one that comes along. I think this is the conclusion come to by those entomologists who have had opportunities for studying other insects. The spider might perhaps be studied in this relation to advantage, as the female is ferocious, often eating her male suitors while they are trying to woo her. Nor do I believe that it is a very important matter in many other animals. Certainly among the domestic ones--the sheep, the horse, the bull and the cow--a superior male and female will mate with inferior ones of the opposite s.e.x, apparently without the slightest objection. I have sometimes thought I had observed in pigeons a preference, having occasionally seen a male leave his mate for a more attractive female; at least one that seemed more attractive to me.
When it comes to s.e.xual selection through struggle, no doubt there has been great advantage, and it has produced important effects. This occurs among polygamous and also among non-polygamous animals, and the strong males are certain to secure the largest number of females and, consequently, leave the largest number of offspring. This would, no doubt, through the laws of inheritance, be beneficial in producing animals of greater vigor and more perfect health. But even in this case, the males seem to have little preference for any particular female; and so while the least vigorous ones would leave few, and many no offspring, the least vigorous females would leave nearly as many as the more vigorous ones. Still, through pure-blooded males alone, stockbreeders tell us, herds of cattle can be brought up to a high degree of perfection in three or four generations, even if the females, at the beginning of the experiment, are inferior. The first generation would be half pure blood; the second three-fourths; the third, seven-eighths, and the fourth fifteen-sixteenths, or almost thoroughbred.
When it comes to man, however, the case is different. With him s.e.xual selection is more important, and the preference shown by both s.e.xes is very marked. Many women have strong prejudices against marrying men with certain characteristics, and nothing will induce them to such a union.
So strong are the desires many of them have for mates with particular qualities, that they prefer to remain single rather than marry one not possessing these qualities. Through this preference, on the whole, the better and those most adapted mate with those most suited to them, and a considerably larger cla.s.s of physically and mentally inferior ones do not mate at all, or, if they do, leave few offspring. The idiot would stand no chance of securing a mate, although, if left free, he would unite with another idiot, like an animal. Such things have happened, and the offspring were not idiots, as might have been expected; but they were not superior beings. The most deformed in body would, in most cases, unless they had mental traits of a high order to counterbalance them, rarely find mates. Thus, through this agency, some of the poorest specimens of both s.e.xes do not produce offspring, and this raises the standard of the health and ability of the race.
There are many characters which have come into existence, it is believed, through s.e.xual selection. One is beauty in women, greater beauty of form, of hair, of eyes, of grace, fidelity, chast.i.ty, power of love, etc. These all give pleasure to the opposite s.e.x, and have an element of usefulness in them. Whenever these characters have appeared in women they have given the possessors a better chance to find a partner with superior characters. The same is true of men. Woman being debarred from the hardest labor through maternity has found it useful, even in early times, to choose men who were strong, brave, courageous and capable of defending and caring for her, so far as was possible, and thus by s.e.xual selection she has indirectly promoted health and vigor in man, for these qualities are inseparable from it.
But the results of s.e.xual selection are by no means perfect. The s.e.xes are nearly equally divided, and as polygamy is not to any great extent practiced among human beings, with the exception of those already named, most men and women can find mates if they wish, even though they may have many serious imperfections of body and mind, and from them many children will be born physically and mentally incompetent.
There is no doubt that s.e.xual selection is coming more and more into play, however. We have abundant evidence of this in the growing sentiment against the marriage of those with a tendency to any serious disease, as insanity, syphilis, etc. Only a little while ago was published an account of a suit for a breach of promise brought by a young woman in an English court against her suitor. He, having in view the value of a healthy wife, and also of children well endowed physically, asked her before the engagement if any of her near relatives had died of consumption, and she replied that none had, which he afterwards found was not true. On learning of it he refused to marry her. I am sorry to say that she won her suit. One of the questions asked in court was: "Is it possible that a lover would ask such questions of his sweetheart as would be asked of a candidate for life insurance?"
Courts.h.i.+p is such a delightful occupation for the young, that it seems a pity to mar it by bringing in questions of health. Yet men and women are often such deceivers, and frequently so ignorant, that some way must be devised to prevent deception if s.e.xual selection is ever expected to have its full influence on race improvement.
HUMAN SELECTION.--Under the head of human selection Galton and Wallace have made some interesting and valuable suggestions for improving the health and quality of man. Mr. Galton proposed a system of marks for family health, intellect and morals, and those members of families having the highest number were to be encouraged to marry early by state endowments sufficient to enable them to make a good start in life, early marriages being favorable to large families. It was a bold suggestion, savoring too strongly of socialism or state control of marriage to suit many of us.
Professor Wallace's plan is that women shall, so far as possible, be made independent, so that they will not feel the necessity of marrying for a home. Her time might be occupied either in public duties or self-culture, or any occupation she might prefer. She should be educated to believe it degrading to marry for a home, without love and adaptation, and equally wrong to marry her inferior. This would compel men to be more manly, to leave off their bad habits and many vices, in order to obtain wives; and the idle, selfish, sickly and deformed would not easily get them. One difficulty in the way of carrying out this plan is the greater number of women in society as it exists today, owing to the larger mortality among boys. But by a better hygiene which is likely to result from the evolution of the race, this greater mortality of the masculine s.e.x is certain in the future to be prevented, and there will then be an excess of men instead of women. This will be a real advantage, for a scarcity of women would give her a greater influence in selection, and the result would be, the worst men would not be able to get wives.
Being in a minority, women would be held in higher esteem, be more sought for, and have a real choice in marriage by being able to reject unsatisfactory suitors, which is certainly not the case now to any considerable extent.
Mr. Wallace's plan would not require such early marriages as that of Mr.
Galton's, and this would be a positive benefit to the physical vigor of the children, for we know that the progeny of too early marriages are more delicate, and reproduction before bodily maturity lowers the standard of health in parents as well as of their offspring. Marriage being delayed, and the culture of the mind being more attended to than is possible when it is early, would reduce the number of children in any family, and this would enable parents to bestow more care upon them. It would also prevent, to a limited extent, over-multiplication of the race, which is a real evil, for if every couple left three or four children the whole world would soon be full, and over-population would result in much disease.
Mr. Wallace's scheme has in view the prevention of marriage by the weak and worthless. He believes that if this can be done little more will be required, for the superior would be the only ones to procreate, and this would be quite sufficient in a few generations to produce a strong and healthy race. He calls his plan that of "human selection," but it may be considered practically as a modification of s.e.xual selection.
NATURAL SELECTION.--Natural selection is another process which takes place on an enormous scale and constantly among all organisms, whether animal or vegetable. Natural selection is the result of the operation of certain laws in the natural world which brings about the survival of those best fitted for their environment. It is a weeding-out system by the destruction of a certain portion, at least, if not all, of the weak and the bad, and it occurs because there is such a rapid increase of most organisms. We speak of it as the survival of the fittest, but it is also, at the same time, the destruction of the unfit.
Mr. Darwin says: "We have seen that man is variable in body and mind, and that the variations are induced either directly or indirectly by the same general causes, and obey the same general laws as with the lower animals. Man has spread widely over the face of the earth, and must have been exposed during his incessant migrations to the most diversified conditions. They must have pa.s.sed through many climates and changed their habits many times before they reached their present homes. They must have been exposed to a struggle for existence and, consequently, to the rigid law of natural selection. Beneficial variations of all kinds have been preserved and injurious ones eliminated. If, then, the progenitors of man, inhabiting any district, especially one undergoing some changed conditions, were divided into two equal bodies, the one-half including those with the best adapted powers for movement, for gaining a subsistence, for self-defence, would, on the average, have more offspring than the other and the less well endowed half."
We may have a good object lesson in the elimination of the unfit going on about us constantly. In New York City, for 1891, the deaths of children under five years of age was 18,112; for 1892 it was 17,577, or slightly less. This is more than one-third, but not quite one-half, of the total deaths at all ages for these years. A very large proportion of these deaths occurred in the tenement house districts, and a very natural question arises in the mind: Are the children of those who live in tenement houses more unfit to survive than those who live in houses in which only one family dwells. No doubt in most cases the children of those are most fit who are most able to provide them with hygienic surroundings, the better food and most suitable care; such are usually the prudent and the capable. The love of children is usually stronger in them. The intelligent affection of parents for their young is one of the incentives to their best training. It certainly is not nearly so strong among the residents of the crowded quarters of a city as among the more prosperous. Any one may observe this by going with a company of mothers on the excursions of some fresh air society, which may be seen in most cities. It is hard to find one of these mothers who shows what we may call intelligent affection or intelligent care of her young. Some pathetic instances ill.u.s.trating this might be mentioned.
When it comes to the question of their physical or mental inferiority, a cursory inspection is all that is required to show they are far below the average. There is a great want of symmetry of body and mind--evidence of degeneration. In order to test the strength of const.i.tution, which is a good way to get at one form of physical fitness for survival, it seems to me, I made a study of the blood of a considerable number of these children and found the amount of protoplasm in the colorless blood corpuscles deficient. This shows that their power to resist disease is slight. It must be borne in mind, however, that a strong const.i.tution alone is not evidence of fitness for survival. A strong person may not have prudence, foresight, keenness of perception, judgment, and many other qualities equally important. The characters just mentioned may const.i.tute fitness when there is only a moderately vigorous body. Mr. Darwin recognized this when he said: "We should bear in mind that an animal possessing great size, strength and ferocity, and which, like the gorilla, could defend itself from all enemies would not, perhaps, have become sufficiently social, and this would effectually have checked the acquirement of the higher mental qualities, such as the sympathy and love of his fellows. Hence, _it might have been of immense advantage to men to have sprung from some comparatively weak but social creature_."
Fitness is a complicated condition and not a simple one. It depends upon so many external conditions. Fitness in one place would be unfitness in another. Still, other things being equal, strength of const.i.tution is a very important factor, and must not be left out of consideration. With it there is a surplus of material in the body beyond what is required for digestion, a.s.similation, circulation and other bodily functions, to enable the parents not only to do hard labor, but also to endow their offspring with vigor equal to their own, often greater vigor. The feeble individuals will have a small amount of stored up material in their bodies which we may designate as physiological capital to give continuous food, warmth and protection to their young; they will not be so well adjusted to their environment, and, consequently, natural selection will cause their non-survival--or their offspring, if not immediately, at no distant period.
This doctrine of natural selection has been designated as cruel, harsh, inexorable, and under the influence of the human feeling every effort is in our time being made to prevent this wholesome check upon the processes of nature from having its due influence upon evolution and race progress. Modern hygiene undertakes to put an end to disease, to save all who are born, to surround them with every influence which can favor their health and development. It would stamp out diphtheria, scarlet fever, summer complaint, consumption and a host of other diseases which now decimate the ranks of the unfit, and often, no doubt, of the comparatively fit. This would perpetuate a type of feeble, unhealthy persons. There would not be much hope of more perfect health for the race if our hygienists could carry out this daring scheme along the lines now working. There seems an antagonism between nature's methods of bettering the physical condition of the race and the efforts of man himself, acting under the guidance of his moral feelings, to prevent the action of natural law. Mr. Darwin recognized this, and referred to it in his great work, "The Descent of Man," where he says: "With savages, the weak in body and mind are soon eliminated, and those that survive commonly exhibit a vigorous state of health. We civilized men, on the other hand, do our utmost to check the process of elimination. We build asylums for the imbeciles, the maimed and the sick; we inst.i.tute poor laws; and our medical men exert their utmost skill to save the life of every one to the last moment."
"There is," says he, "reason to believe that vaccination has preserved thousands who from a weak const.i.tution would have succ.u.mbed to smallpox.
Thus the weak members of civilized communities propagate their kind. No one who has attended to the breeding of domestic animals will doubt but this must be highly injurious to the human race. Excepting in the case of man himself hardly any one is so ignorant as to allow his worst animals to breed."
Other evolutionists, in more recent times, have taken a still more somber view of this danger of race deterioration through the prevention of the full action of the law of natural selection.
Dr. John Berry Haycraft, in a recent work ent.i.tled "Darwinism and Race Progress," has sounded the alarm in no uncertain tones. He says: "Races, therefore, subject to epidemics of a particular fever, suffer selections in the hands of the microbes of that fever, and those living are survivals, cast in the most resisting mould. It may not be flattering to our national vanity to look upon ourselves as the product of the selection of the micro-organism of measles, scarlet fever, smallpox, etc.; but the reasonableness of the conclusion seems to be forced upon us when we consider his immunity from these diseases as compared with the natives of the interior of Africa, or the wilds of America, whose races have never been so selected, and who, when attacked for the first time by these diseases, are ravaged almost to extinction. By exterminating these diseases we shall no doubt preserve countless lives to the community who will, in their turn, become race producers; but in as much as the individuals thus preserved will, in most cases, belong to the feebler and less resisting of the community, _the race will not become more robust_."
The same author concludes in these words: "In the meantime we may view, and not without inquietude, the probability that our statistics, as far as they go, indicate that race deterioration has already begun as a consequence of that care for the individual which has characterized the efforts of modern society. The biologist, from quite another group of facts, has independently arrived at conclusions which render this view in the highest degree probable."
"Thus, the great English race, once so hardy, so powerful," says this modern writer, "by hygiene and better physical conditions, is becoming weaker and weaker."
This view of the case is growing largely in England and, perhaps, other European countries. There is already some evidence of its truthfulness in statistics. The death rate for those in middle life is rather increasing than diminis.h.i.+ng. This arises from the fact that the great number of children who formerly died in infancy have lived, but being of more feeble const.i.tutions, they swell the death rate later on. It is felt, also, in many educational inst.i.tutions in the larger number of youths who cannot stand the strain and stress of student life. They are, high medical authority says, the youth saved from early death by modern hygienic and medical care. Formerly, natural selection would have chosen them as unfit to survive, and there would have remained alive few besides the hardy ones with good const.i.tutions, capable of great strain, with great powers of endurance.
It is also shown in the stress of modern compet.i.tion, in which there are mult.i.tudes who cannot stand this strain. It is from these, in some degree, that we hear the cry for governmental aid. "We must make the conditions of life easier for them," say our social reformers, "or they will become 'a submerged cla.s.s.'"
CONFLICT BETWEEN EVOLUTIONARY THEORIES AND OUR HUMANE SENTIMENTS.--And now I wish to consider another phase of my subject. Those who have followed closely what was said concerning natural selection will have seen that there appears to be a conflict between evolutionary theories and the humane sentiment of the age--a want of correspondence between what is being done by natural law and what man is trying to do under the inspiration of his loving heart. Can we reconcile this want of correspondence? To some extent no doubt we can.
In the first place, the growth of the moral nature has always been held in high esteem by every nation and every race. Our moral giants stand higher in the scale of being than our great generals or statesmen, even in an age when moral culture is at a low ebb. We draw our moral inspiration from Buddha, Socrates and Christ rather than from Aristotle; their science may be, yes, is, faulty, but their spirit is lofty.
And the moral nature is cultivated in laboring for the good of others, in trying to save for a better life the poor, the weak, the distressed.
All that is required is that we do this work wisely, not unwisely, under the guidance of reason, not feelings. We want to prevent these calamities rather than cure them.
Another satisfaction arises from the fact that in learning how to perfect the lives of the feeble so that they may live longer, we also learn how to perfect, in a still higher degree, the lives of the strong, or those we call the fit, so that they also will not only live longer, but be able to live with much greater satisfaction the complex lives of our times.
The knowledge which helps the first may help the second even more than the first, for they have better opportunities and can take advantage of it. We may also comfort ourselves with the fact that a majority of those with feeble const.i.tutions, whose lives have been for a time s.n.a.t.c.hed from the operation of the laws of natural selection, will not, after all, contribute very extensively to the increase of the population.
Great powers of generation and numerous offspring rarely go with physical weakness. If there are exceptions they are explainable. It is, I think, pretty certain that a great majority of such leave few, often no offspring. They find their way into places where work is light and the pay small, and they cannot afford to marry and care for families, and do not do it.
The law of natural selection will continue to work on them so long as its action is required, with little regard to the efforts of man to abrogate it. Nature works continuously for ages, and she works on every part of man, every organ, every function. We may almost say she is omnipotent; that she watches for every slight improvement; that she knows what to do under every circ.u.mstance. Foiled in one direction, she has other means, infinite means, for gaining her ends. Man can no more put a stop to the operation of natural law than he can put a stop to the flow of Niagara. He may turn off a trifle of its water to whirl wheels and spindles, but the mighty river flows on until nature makes some changes in the watersheds, that make its flow impossible. Man, on the other hand, acts on his own body in a finite way. He works mainly for immediate, not remote, ends. He changes his methods as his needs change, or his knowledge increases. Today he works with limited knowledge of hygiene, inspired by old ideas of philanthropy. Tomorrow he may have a vastly extended knowledge of this subject and an entirely new social science which will enable him to do more good and less harm.
IDEAL OF HEALTH.--Let me now consider some of the things necessary to give us a greater hope for the future of human health, of ourselves and for our children.
Homo culture Part 5
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