Peterson 1935. Castor canadensis. July 14. Goose Creek, 5000 ft., 2 mi. W Utah Line, Elko Co., Nevada. One young caught by Mr. Russell & Mr. Richardson in Goose Creek. Weight about 7 lbs. Skin prepared by A. E. Peterson. Exact weight found to be 2645 g. According to Mr. Evert, old trapper at Goose Creek, beaver travel considerably & hence may not visit any of the traps set in any one sector of stream. Thus to catch one trapping may have to cover a period of a week or two, as the animals do return to hunts repeatedly in due time.