There is no doubt that sexual 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?"
Courtship 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 sexual 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 sex 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 sexual 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 passed 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 illustrating this might be mentioned.