And yet among the Hopi, where the economy is practically identical with the Zuñi, there are no men-women; in this tribe the institution, it is said, was never established. This, like other customs, is not merely a matter of economic adjustment; economic or psychologic propriety or consistency or predisposition may count, but of great importance also are the survival of traits from an earlier culture, and the acquiring of traits from the culture of neighboring peoples. Were we to understand the interplay of all these factors in the life, shall we say, of Waiyautitsa, we might be a long way towards understanding the principles of society, even other than that of Zuñi.