It thus appears that Mr. Crawley’s theory of exogamy and mine are practically identical in essence (if I rightly interpret him). The original objection was to the intermarriage of the young of the group of contiguity, the hearth-mates. If there was but one male of the elder generation in the group of contiguity, these young people would be brothers and sisters. If there were two or more males of the elder generation, brothers, the group would include cousins, who (even before the totem name was accepted by the group) would also be forbidden to intermarry. When the totem name was accepted, cousins, children of brother and sister, and even brothers and sisters, children of one father, by. wives of different totems, would be, technically, intermarriageable: though their marriages may, in practice, have been forbidden because they were still of the group of contiguity, and as such bore its _local_ totem name, say, Emu, while, by the mother’s totem name, they may have been Bats, or Cats, or anything. Where I must differ from Mr. Crawley is in doubting whether at this hypothetical early stage, the superstitions which produce ‘sexual tabu’ had arisen. We cannot tell; but certainly, as soon as the totem name had given rise to the myth that the totem, in human beings as in animals and plants, was inviolable--the beast or plant of the totem blood not to be killed or eaten,[52] the woman of the totem name not to be touched--so soon would endogamy, marriage within the totem, be a sin, incest. This it would be; the totem tabu once established, whether sexual tabu, or sexual jealousy, or both, caused the first prohibition, not to marry group, mates. Here we may briefly advert to Dr. Westermarck’s theory of exogamy, though it interrupts the harmonious issue of our speculations. DR. WESTERMARCK’S THEORY As to exogamy, Dr. Westermarck explains it by ‘an instinct’ against marriage of near kin. Our ancestors who married near kin would die out, he thinks, and they who avoided such unions would survive, ‘and thus an instinct would be developed,’[53] by ‘Natural Selection.’ But why did any of our ancestors avoid such marriages at all? From ‘an aversion to those with whom they lived.’ And why had they this aversion? Because they had an instinct against such unions. Then why had they an instinct? We are engaged in a vicious circle. ‘Lastly it is not scientific to use the term instinct of this kind of thing.’[54] MR. MORGAN’S THEORY As to Mr. Morgan’s theory, in his _Ancient Society_ (1877), of a movement of sanitary and moral reform, which led to prohibition of ‘consanguine marriages’ I shall return to it in a later part of this essay (‘Other Bars to Marriage’). Here it will be found that Mr. Morgan is the source of certain other theories which we are to discuss, a fact involving a certain amount of repetition of arguments already advanced. RETURN TO THE AUTHOR’S THEORY