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on foot. It began to sprinkle just after we started. At foot of S side of valley we found gully cutting black Mancos shale. Collected an Inoceramus deformis and a number of I. dissimilis (?). At top of low ridge and forming its slope is a sandstone containing many plant stems, apparently seaweeds, a few indeterminable Inoceramus and Ostrea. Beneath is are black shales again, so the sandstone forms an escarpment thus: ((drawing in field book)). I did not go to the higher ridge marked A, so am not certain of its character. On the ridge saw a poorwill. Flushed it several times. It rained most of the time on the ridge. At foot of ridge on way
