As in the case of the Zuñis and Tarahumari Indians of the present day, referred to by W J McGee, in his valuable and instructive article on “The beginning of Marriage” (the American Anthropologist, vol. IX, no. 11, p. 371), “certain ceremonials typifying the fecundity of the earth and of the leading people thereof” were performed by the ancient Mexicans. These public ceremonials had also been “apparently developed to the end that the tribes and peoples might be encouraged to increase and multiply and possess the fecund earth.” They took place at the period of the year when the heaven and earth were also supposed to unite, _i. e._, at the beginning of the rainy season. During this the ordinary out-door occupations of the agriculturist and hunter were forcibly interrupted and the regular and periodical transportations of produce and tribute to the capital became impossible, owing to torrential rain, swollen rivers and impassable roads. This period of enforced shelter and confinement indoors seems to have become the definite mating season of the aborigines. At the same time the union of the sexes had obviously assumed a sort of consecration since it was intimately associated with the cosmical, philosophical and religious ideas and coincided with what was regarded as the annual union of the elements or of the Above and Below, the heaven and earth. At that period of its history, when the Aztec race was jointly governed by a priest, personifying the heaven and a priestess, “his wife and sister,” who personified the earth, some form of sacred marriage rite must have been annually performed. The consecrated character of their union must have naturally caused their offspring to be regarded as of a holy and almost divine origin. It is easy to realize, therefore, how, in ancient Mexico, the artificial idea of “superior birth” came into existence, how a family or caste of rulers gradually developed, the members of which were entitled “teotl”=divine, whilst the men were regarded as “the sons of Heaven” and the women “the daughters of Earth.” It is obvious from this that the periodical union of the sexes, accompanied as it was, by sacred dances and the distribution of sacred wine, must have gradually assumed a semi-religious character, whilst the ritual nuptials of the “divine” rulers, typifying, as it obviously did, the grand and impressive phenomenon of the rainy season, must have caused this marriage to assume the character of a hallowed rite and surrounded it with the most elevated and intense religious sentiments of which the native mind was capable.