The perpetuation of the race is one of the deep fundamental principles of marriage. It remains for each couple to see that their offering to this end is the best that they can possibly make. From the standpoint of the race, it is essential that only those who are fit should mate and give children to the future. The majority of matings are haphazard. A young woman chooses a husband from among the men with whom she is thrown in contact. She cannot wait until she has seen and known all the available men. Too often she takes to the first one who pleases her. The economic independence of women will alleviate this slightly. A young woman no longer needs to marry in her earliest twenties. She can afford to wait. This gives her a better chance of selection. But even with necessity for marrying early removed, she knows little or nothing about the man she chooses. He is attentive, dances well, is amusing, so she marries him. She does not stop to consider his physical fitness to be the father of her children. Mere passion too often determines the matter. This is a thing that comes very easily, and on the crest of its urge, people marry. As easily it goes, when there is no fundamental compatibility behind it. Then marriage is wrecked. A young woman should not marry hastily, nor choose as a basis of this estate the momentary thrill of a kiss, nor the charm of a man’s dancing ability. We are not suggesting long tedious engagements, but as deep a knowledge of the man as is possible before the girl enters into matrimony with him. _Eugenics._—The girl is confronted with the problem, What is the fitting mate? Her own inclinations should be the first guide, but when they have singled out a possible choice, she should bring common sense to their aid. In general, all persons turn to their opposites. This is right. Opposites in appearance and temperament are usually the most congenial. This does not mean violent contrasts. A man who cares nothing for the theater, dancing, social life should not pick a girl whose whole life is bound up in these. If a woman feels immense or insistent love for a man whom she knows is not a fit father for her children, she should either forget the desired mating or the children. Eugenics, or the choice of proper mates, is being more carefully studied from a scientific point of view, and will ultimately be invaluable, at least as far as procreation goes.