tion with E and W « of section line. Bluff E of there station 3 sec 8 contained I. sagensis in limestone concretions. Bluff is sandy in black shale. In lateral gulch at station 4 SE cor NE ¬ SW ¬ Sec 8 we found I. barabini and sagensis. Dip all SE gentle. Found sandstone again at station 6 NE cor NW ¬ SE ¬ Sec. 8. E of there clay is yellow. On S front of Four Mile Mesa Hygiene sandstone reaches W line sec. 6 Tp 1 N R 70 W. On N slope of mesa it trends rapidly to the northeast. In the NE ¬ SE ¬ sec. 6 Tp 1 N R 70 W the upper part of the Pierre exposure on N slope of mesa weathers yellowish.
Denver, Colo., Mch 2. 1907
Prof. Geo. L. Cannon and I went out to the creek S of Cheltenham Schoolhouse in West Denver. The creek is locally known as Dry Creek, but to distinguish it from a dozen other “dry Creeks” Cannon proposes the name Green Mountain Creek
