He was one of the founders of the study of " Psychical Research," and his other writings on anthropology include The Book of Dreams and Ghosts (1897), Magic and Religion (1901) and The Secret of the Totem (1905).
This tribe may legally marry within the totem, but always avoids such unions.
Among the Caribs a like social order prevailed; indeed, their family system is identical with the totem system of North American Indians.
Each spirit, as it quits its nanja or natural haunt to enter the mother, drops a churinga, a slab of stone or wood marked with the child's totem and containing its spirit attributes.
Ceremonies of initiation are the means by which the alliance is established between the deity and the young man, when the latter enters upon the rights of manhood; and the supposed bond of kinship is thus regarded as an artificial union from the outset, so far as the individual is concerned, although Robertson Smith still maintains the theory of the fatherhood of the god, where it is a question of the origin of the totem-kin.