Collingwood July 23-1912, Tuesday. Started out with Williams to see the geology of the "Mountains" the Cuesta back of Collingworth or rather the Lagrange range turns Chavis Drills and thence to about 5 miles east of Collingworth which is on the road front of Collingworth At the level of the crater in the town of Collingwood one sees shaly very light green limestone in which occur Praseolina, Subulata a Fusispira and Homotoma. Here are many other forms but not easily gotten. The horizon is Trenton and apparently Shale black calls the Praseolina or Fusispira zone. I should estimate the horizon to be Middle Trenton. We then drove over a low flat to the foot of the mountain about 2 miles from Collingwood and after going up a few hundred feet began collecting in un- mistakeable Richmond. Collected for few forms. In the middle beds saw Tetradium, Strutho- arena filictepa, S. sulcata, Platystyphus filipeta with one Plicatini in fold, Archidiscus concentrici, Amboychin radiata, A. Casei Taur no R. Capax. Saw O. Sinuata, [illegible], There are considerable beds below this foot