﻿NO. 7 



SMITHSONIAN EXPLORATIONS, 1 926 



165 



floor sweepings furnishes mute evidence of the passing of many 

 generations. 



Mr. Karl Ruppert, one of Mr. Judd's associates in the Pueblo 

 Bonito Expeditions, again supervised explorations at Pueblo del 

 Arroyo. These, in 1926, were chiefly confined to excavation of a 

 much-ruined, lesser structure close on the west side of the larger 

 pueblo. The excavations were complicated and laborious ; but upon 

 their conclusion it was found that the site had originally been occu- 

 pied by a circular tower, y}^ feet (22.24 m-) i'^ diameter, of a type 



Fig. 166. — Outer south wall of Pueblo del Arroyo, showing varied stonework 

 and later, abutting rooms. (Photograph by Neil M. Judd. Courtesy of the 

 National Geographic Society.) 



well known to the northward but not previously recorded so far south 

 of the Rio San Juan. Interest in this structure was augmented by its 

 apparent relationship to the super-kivas or huge ceremonial chambers 

 of the Bonitians. Later walls joined the tower to Pueblo del Arroyo, 

 but, subsequently, both tower and adjacent buildings were almost 

 wholly razed by prehistoric masons who desired the dressed sand- 

 stone blocks for use elsewhere. 



In addition to his study of the Expedition's ceramic collections, Mr. 

 Frank H. H. Roberts, Jr., now of the Bureau of American Ethnology, 

 undertook exploration of two small-house sites about nine miles east 

 of Pueblo Bonito. Both settlements belong to an earlier horizon than 



