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The Death Valley Expedition: A Biological Survey of Parts of California, Nevada, Arizona, and Utah, Part 2
Collection of reports on Death Valley, the bordering region of California, Nevada, Arizona, and Utah. Reports include birds, reptiles and Batrachians, fishes, insects, mollusks, trees and shrubs, cactuses and yuccas, and list of localities in the reports.
Date:
May 31, 1893
Creator:
Fisher, A. K.; Stejneger, Leonhard; Gilbert, Charles H.; Riley, C. V.; Stearns, R. E. C.; Merriam, C. Hart et al.
Object Type:
Report
System:
The UNT Digital Library
Results of a Biological Survey of the San Francisco Mountain Region and Desert of the Little Colorado, Arizona
Brief summary of a biological survey of the Painted Desert, specifically the San Francisco Mountain region, and the Grand Canyon (Cañon).
Date:
September 11, 1890
Creator:
Merriam, C. Hart & Stejneger, Leonhard
Object Type:
Report
System:
The UNT Digital Library
Ore Concentrator
Patent for a "machine for separating ores of precious metals, and particularly to that class of machines known as 'dry concentrators or separators,' used for separating fold ore by means of an air-blast over dry sand, gravel, quartz, etc." (lines 10-15). Illustrations and instructions are included.
Date:
August 17, 1897
Creator:
Waer, Luis M.
Object Type:
Patent
System:
The Portal to Texas History