Let us begin with Australia, where the aboriginal population is in a more primitive condition than any other race whose institutions have been investigated. In certain tribes the family has hardly begun to be distinguished from kin in general. The group is divided into male and female classes, in addition to the division into clans.[142] This is so among the tribes of Mount Gambier, of Darling River, and of Queensland. Marriage within the clan is strictly forbidden, and the male and female classes of each clan are regarded as brothers and sisters. But as every man is brother to all the sisters of his clan, he is husband to all the women of the other clans of his tribe. Marriage is not an individual act, it is a social condition. The custom is not always carried out in practice, but any man of one clan has the right, if he wishes to exercise it, to call any woman belonging to another clan of his tribe his wife, and to treat her as such.[143] The children of each group belong naturally to the clan of the mother, and there is no legal parenthood between them and their father. In the case of war the son must join the maternal tribe. But this is not the universal rule, and in many tribes the children now belong to the paternal clan. The paternal family is beginning to be established in Australia, and varied artifices are used to escape from the tribal marriage and to form unions on an individual basis. Mother-right is still in force in parts of India, though owing to the influence of Brahmanism on the aboriginal tribes the examples are fewer than might be expected. This change has brought descent through the fathers, and has involved, besides, the more or less complete subjugation of women, with insistence on female chastity, abolition of divorce, infant marriage, and perpetuation of widowhood.[144] Not every tribe is yet thus revolutionised. Among the Kasias of south-east India the husband lives with the wife or visits her occasionally. "Laws of rank and property follow the strictest maternal rule; when a couple separate the children remain with the mother, the son does not succeed his father, but a raja's neglected offspring may become a common peasant or a labourer; the sister's son succeeds to rank and is heir to the property."[145] This may be taken as an extreme example of the conditions among the unchanged tribes. The Garos tribe have an interesting marriage custom.[146] The girl chooses her lover and invites him to follow her; any advance made on his side is regarded as an insult to the woman's clan, and has to be expiated by presents. This marriage is very similar to the ceremony of capture, only the actors change parts; it is here the bridegroom who runs away, and is conducted by force to his future wife amidst the lamentations of his relations.