ss approaches in these conditions to a state of nature in respect to the women of the second class. They are enabled, therefore, to select wives from the stronger race, and mistresses from the weaker one. The natural law of sexual selection determines the mating in the one case as truly as in the other, i. e., in the case of concubinage as in that of marriage. The men of the upper class fall in love with the women whom they have elected to become their wives, they also fall in love with the women they have elected to become their concubines. They go through all those erotic attentions to the women of each class, which are called courtship in the language of sexual love. Only in the case of women of the first class this courtship is open, visible to the eye of the upper world of the dominant race, while in the case of the women of the second class it is secret, conducted in a corner of the lower world of the subject race.
These men build homes in the upper world where are installed their wives,