Life in a Hopi village is different from that in other Indian villages. Among the Hopi marriage by purchase does not exist; the choice of a life companion is left almost entirely to the couple contemplating the marriage. Nearly all of the houses adjoin, and most of the streets are narrow. Families do not live in one house a few months and then move, as in a settlement of white people, but stay from generation to generation in the same place. Social intercourse is not influenced by language, occupation or religious differences, and the young people have ample opportunity to become thoroughly acquainted. The Hopi maiden is known by the way she dresses her hair - two enormous whorls indicate the singe woman, but when they marry the whorls are undone and the hair loosened and tied with a knot on each side of the head.