maternal descent or, speaking more generally, the fact that children belong to the parents, obtains invariably. It would be preferable, therefore, simply to distinguish the parental totem connection from the traditional exogamous connection, or one system in which the exogamous and the parental connections coincide, from a second in which they differ. The conjecture, therefore, that a traditional marriage relation, differing from that based on parentage, grew up out of a previous totem friendship, is based primarily on the importance which totemic _cult_ alliances in general possessed within the totemic tribal organization. Other causes, of course, may also have co-operated. Two further points must be noticed. In the first place, it is not at all likely that the transition from the parental exogamous relation to the traditional form occurred at the same time in all the totem groups. This is not only highly improbable in itself, but is also absolutely irreconcilable with the fact, shown by the example of the Dieri, that the earlier transition from unlimited to limited exogamy was gradual. Moreover, one must bear in mind that the transition from parental to traditional exogamy, represented by diagram III (p. 148), not only underwent several repeated transformations, but that, due to the power which tradition always exerts, a traditional exogamous union of two totems, after it once arose, may have persisted throughout several changing cult friendships. An existing marriage relation may not at all have corresponded to the cult friendship that immediately preceded it; it may have been based on any earlier friendship whatsoever that had been favoured by conditions and that had received a firm place in tradition. These facts show that the hypothetical 'wise ancestors' of the present-day Australians--sages who are said to have invented this complicated organization in the immemorial past for the purpose of avoiding endogamy--are just as superfluous as they are improbable. The phenomena arose in the course of a long period of time, out of conditions immanent in the life and in the cult of these tribes. The various forms of exogamy appearing in the course of this period were not the causes but the effects of the phenomena in question. 7. THE FORMS OF POLYGAMY.