LXII BUREAU OF AMERICAN ETHNOLOGY 
and many variants which have not been surveyed elsewhere. 
The examination and comparative study of these relies throw 
much light on the development of art in architecture by the 
people of the pueblos. In other directions, too, the observa- 
tions add materially to knowledge of the habits and customs 
of the aborigines. Mr Mindeleff’s researches during the season, 
in connection with his surveys during the last fiscal year, have 
covered a large territory and will permit archeologic mapping 
of value; even the negative results are useful as indicating the 
territory barren of aboriginal works. 
Early in September Mr Mindeleff brought his field opera- 
tions to a close. The greater part of the month was spent in 
completing his accounts and disposing of his field outfit and 
equipment. Toward the end of the month he repaired to 
Washington to begin the preparation of a final report on his 
surveys of the preceding fifteen months. 
The most extended exploratory work of the year was that 
of an expedition through the country of the Papago and Seri 
Indians of Arizona and Sonora (Mexico), conducted by Mr 
McGee. The expedition was fitted out in Tucson about the 
middle of October. Mr William Dinwiddie accompanied the 
expedition as photographer, and the party included also a 
Papago Indian interpreter and from time to time Indians or 
Mexican guides and interpreters. Leaving Tucson, the party 
proceeded to and through San Luis valley, and temporarily 
crossed the frontier at Sasabe to the Papago Indian village of 
Poso Verde. Here the leader and interpreter remained several 
days, collecting information concerning the distribution of the 
Papago villages and rancherias, while Mr Dinwiddie was sent 
back to Tucson to make necessary changes in outfit. A few 
days later the party reassembled at Arivaca, Arizona, where 
surveys were made of extended prehistoric works. Thence 
the expedition moved to the frontier at Nogales, where after 
some delay authority for extending the operations on Mexican 
soil was courteously accorded, in response to representations 
made through the local officials to the federal officers of the 
Republic of Mexico. Leaving Nogales, the party proceeded 
southward, visiting several villages formerly occupied by 
