and did not disappear without leaving distinct traces in language and custom.
But if we replace individual marriage, we can then grasp the apparent excess of cases of incest shunning which we have met among these same races. The totem exogamy, or prohibition of sexual intercourse between members of the same clan, seemed the most appropriate means for the prevention of group incest; and this totem exogamy then became fixed and long survived its original motivation.
Although we believe that we understand the motives of the marriage restrictions among the Australian savages, we have still to learn that the actual conditions reveal a still more bewildering complication. For there are only few tribes in Australia which show no other prohibition besides the totem barrier. Most of them are so organized that they fall into two divisions which have been called marriage classes, or phratries. Each of these marriage groups is exogamous and includes a majority of totem groups. Usually each marriage group is again divided into two sub-classes (sub-phratries), and the whole tribe is therefore divided into four classes; the subclasses thus standing between the phratries and the totem groups.
The typical and often very intricate scheme
