Dr. Boas distinguishes “three classes of tribal names and of clan names, viz., such as are collective forms of the names of the ancestors, names taken from the region inhabited by the tribe or clan and names of honour.... Each clan derives its origin from a mythical ancestor ... the present system of tribes and clans is of recent growth ... their numbers have undergone considerable changes in historical times.” A careful study of the material presented by Dr. Boas shows, however, that the ground-plans of the entire social fabric reared by the Kwakiutl Indians closely resembles that on which the stately Maya, Mexican and Peruvian civilizations were reared. Returning to Peru, it is particularly noteworthy that the above mentioned solemn sacrifices to the Creator, the Sun and Thunder, and Moon and Earth, held in November, were thus offered to them jointly in one consecrated place, whereas, at other seasons, the cult was performed separately and on different days, before the emblems of the Above and Below. Notwithstanding the moderation and tolerance which seem to have been characteristic of the Inca government, and the apparent equality and accord of the two cults, the heads of which were the Inca and Coya, we find evidences of discord in the historical records. The Inca empire had scarcely been established for more than a few centuries(23) when we discern signs of a serious rebellion under the leadership of the Chuchi-capac, the chief of the Southern province or Colla-suyu, pertaining to the Below. From the taunts he uttered in the presence of the Inca on a festive occasion and which have been recorded verbally by Salcamayhua, it is clear that the chief of the Collas asserted that he (and the people of his province) actually practised sun-cult although “his throne was of silver;” that is to say, notwithstanding the fact that moon-cult pertained to the quarter to which he was assigned, namely, to the Below. He justifies his departure from moon-cult by taunting the Inca that he, in turn, did not adhere strictly to sun-cult but worshipped the impersonal Creator. This struggle between the ancient native sun-cult and star-cult and this religious dissension, the reason for which is apparent, initiated the long period of internal strife and warfare which ultimately made the Spanish Conquest such an easy matter. During the course of these wars the Peruvian Inca, on one occasion, avenged himself for a supposed insult by having drums made of the skins of some of the enemies’ messengers and by sending back others of these “dressed as women,” that is to say degraded from their positions as warriors or noblemen to the ranks of the commoners. A similar degradation, inflicted upon the Tlatelolcan rebels by the Mexicans has already been mentioned and can only be fully understood when the class-system is recognized.