petrographer

Updated: May 15, 2025

In view of the uncertainty on this point and the further fact that almost all the cavate lodges heretofore found were excavated in tufa, ash, or other soft volcanic deposits, the report of Mr. Joseph S. Diller, petrographer of the U.S. Geological Survey, will be of interest.

Cosmos Mindeleff - Aboriginal Remains in Verde Valley, Arizona: Thirteenth Annual Report of the Bureau of Ethnology to the: Secretary of the Smithsonian Institution, 1891-92,: Government Printing Office, Washington, 1896, pages 179-262