In most Australian tribes . . . a man, A, having one or more sisters finds a man, B, standing to him in the relation of kumbali who also possesses a sister. These men each take a sister of the other as wife. . . . The arrangement of marriages . . . is managed by the older people. While the children are quite small it is arranged which ones are to marry. . . . When a girl is old enough to be claimed as a wife she is handed over by her father to the husband, who takes her away to his own camp. There does not seem to be any ceremony on such an occasion.1

1Radeliffe-Brown, A.R.n/an/an/an/a, "Three Tribes of Western Australia," , 43: 156, 158.