and above it found numbers of Ostrea glabra, but a thorough search brought to light a single specimen of Cardium speciosum in the upper stratum so that settled its Fox Hills age. Reached camp at 6:30 and had pea soup, canned salmon and bread and butter, with peaches.
Thursday, July 5, 1906
At 6 a.m. I went to the stream with the big net looking for mollusks, but found none except some small Physas and Planorbis parvus. Reached the wagon at 7:30. Breakfast was ready. We got the wagon loaded and started at 9:20. Reached mouth of St. Vrain 5 miles distant at 10 a.m. and explored the Fox Hills deposits there. At the top we found a coarse conglomerate, some of the pebbles derived from the mountains measuring two or three inches in diameter. Beneath that a few feet is a two foot stratum composed almost entirely of Ostrea sp., with a sandstone matrix. The greater part
