In the same way we may suppose that in a consolidation of a community dwelling several units may have drawn together and united. There is evidence of a union of this kind in many ruins in the Southwest.

The data here published should not be interpreted to mean that the author regards the builders of the towers and great houses here described as evidences of a race other than the Indians. Indeed he believes that in both blood and culture they have left survivals among the modern Pueblos. He also does not hold that as a whole they necessarily belonged to a radically different phase of culture, notwithstanding the buildings they constructed show a greater variety of form and masonry superior to that of their descendants.

The evidences are cumulative that there existed and disappeared in a wide geographical area of the Southwest a people whose buildings differed so much from those of any other area in North America that the area in which they occur may be designated as a characteristic one.

The variety and type of buildings have a bearing on social organization. A large building composed of many units is probably but not necessarily later in time than a single house; an isolated single house would probably be of earlier construction than a collection of several single houses of the same character compactly arranged in a village; a complete consolidation of several houses of such a village into a community house would naturally be more modern than a group of isolated single houses.

City blocks postdate hamlets. Between a stage indicated by single houses and one characterized by consolidated building, there is a phase in which the buildings are grouped in clusters and are not united. We may theoretically suppose that the single house was inhabited by one social unit as a clan or family. As the food quest became more intensified and defense more urgent, social units, as indicated by single houses, would be brought together, and as the population increased the amalgamation would be more complete. This social organization, in the beginning loose, in the course of time would become more homogeneous, and as it did so the union of these separate social units would have been closer; and if we combine with that tendency the powerful stimulus of protection, we can readily see how a compact form of architecture characteristic of the buildings here described was brought about. The element of defense in the villages with scattered houses does not appear to have been very important, but might be adduced to explain the consolidation of these into large community houses.

If the growth of the large pueblos has followed the lines above indicated, and if each unit type indicates a social unit as well, we necessarily have in this growth of the community house the story of the social evolution of the Pueblo people. Clans or social units at first isolated later joined each other, intermarriage always tending to make the population more homogeneous. The social result of the amalgamation of clans seeking common defense would in time be marked. The inevitable outcome would be a breaking down of clan priesthoods or clan religions and the formation of fraternities of priesthoods recruited from several clans. This in turn would lead to a corresponding reduction and enlargement of ceremonial rooms remaining. Two kivas suffice for the ceremonies of the majority of the Rio Grande pueblos; but Cliff Palace with a population of the same size had 23 and Spruce-tree House, a much smaller cliff pueblo, had 8.

One can not fail to notice a similarity in sites of some of the great houses of the McElmo to neighboring cliff habitations and a like relation of Sun Temple to the cliff-dwellings in Fewkes Canyon in the Mesa Verde. Possibly the purpose of these great houses and Sun Temple was identical. Some of the great houses were probably granaries and Sun Temple may have been intended partly for a like use. No indications of remains of stored corn have been observed in any of these buildings, but Castañeda[61] speaks of a village of subterranean granaries (“silos”) in the Rio Grande country, which is instructive in this connection.

INDEX

PLATE 1