except between those hours except at the alkali flat south of Little Thompson where they swarmed as we passed through both morning and evening. Their presence is especially noticeable in the neighborhood of alfalfa fields. Very hot morning. We set the wagon bed and top on running gear (a difficult undertaking without proper blocking etc.) and broke camp about 11 a.m. taking roads leading S and E for Greeley . I hastily examined the ridge paralleling Fossil Ridge to the east and found it to quite strongly resemble the materials of Fossil Ridge, but the concretions are not as rounded. Found a single fossil – apparently a young Inoceramus oblongus . Harry and I examined a very small, swampy lakelet N of the head of Poudre Valley Reservoir and found Limnaea sp. , Physa sp. , Planorbis trivolvis and P. parvus . These occurred in large numbers in the outlet