N of Boulder, Feby 22, 1907
Sievert Rohwer and I went out on horseback to sketch in the map E of W line sec. 7 Tp. 1 N., R. 70 W., E of little house in adjoining sec. Found Hygiene sandstone very steep, but it flattens as it passes over Four Mile Mesa to the north, this accounting for widening of outcrop. In SE ¬ sec. 6 we collected Heteroceras sp., Ancyloceras tricostatus, Lucina occidentalis, Inoceramus barabini, and sagensis etc. in gulch at station 7 in sec. 6 Tp 1N R 71W.
N of Boulder Feby 23, 1907
Sievert Rohwer, Frank Rohwer and I went north today, collected fossils. In sandstone at Station 8, sec 7 Tp 1 N R 70 W found I. vanuxemi, I barabini and I. sagensis in poor condition and 1 B. cf. compressus just at W line of section and about intersec-