Four miles N of Boulder, Colo. Feby 12, 1907
Sievert and Frank Rohwer and I started at 9:45. Drove to where private road crosses the mesa about 3 « miles N of Boulder and there left the rig. Where the private road crosses the Hygiene sandstone (Pierre Cretaceous) in the SW ¬ of Sec. 6, Tp. 1N, R 70 WW., we found a fossiliferous zone about 30 feet from top of exposure; 1 Baculites ovatus, 15 Inoceramus sp., a fragment of wood, some seaweeds ? and worm or mollusk burrows. Above and below this horizon the sandstone seemed barren, except for apparent seaweeds. N of the gulch which cuts this mesa off on the north and about 200 to 300 yards east of the west line of section 6, consequently beneath the Hygiene sandstone, we found
