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beneath the escarpment and rest upon reddish, thinbedded, crossbedded sandstones resembling the Lyons sandstones of southern Larimer County, but likely of later age. The river just within the canyon occupies the valley back of the Dakota escarpment. Dips here are approximately north (N by NW perhaps). Dips from Piceance Creek to here are thus: ((drawing in field book)). Collected Vallonia, Pupilla, Vitrina and Pyramidula 10 miles from Meeker, just within the canyon a mile or two. This is the first place I have found Vallonia common on the trip, I believe. We soon passed into the red beds. The
