frequent waterholes, separated by a few feet of moist ground, inhabited by Sphaerium, Physa, Planorbis, crayfish, frogs, fish (Fundulus) etc., banks lined with fine willows and a few cottonwoods. Reached here at 4:30. Find magpies here and mocking big (sic). Before supper we found a place where Sphaerium are very abundant, and in addition collected two species of Physa and Planorbis trivolvis, P. bicarinatus, and P. parvus. Also found turtles, green water beetles and leeches. Rained at dark and continued for some time after we retired.
Monday, July 2, 1906
Examined the creek bluffs below camp. At the top is a zone several (4 or 5) ft. in thickness of bituminous shale containing abundant plant fragments, underlaid by white sandstone all badly weathered and very soft, containing iron concretions. Below this is a hard stratum of sandstone a foot or two thick, which presents a strangely krinkled appearance
