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33
Tully, Onondaga Co., N.Y., - 
Monday, September 10, 1888.
I visit Otisco Valley, today.
At D.C. Gambell's mill, Hamilton Shales Dip 1/2° S.
After leaving Vesper, I nowhere saw Tully Limestone, until I recrossed it, a short ^ [[insertion]] distance [[/insertion]] south of Onondaga County south line, in Cortland Co., where it is about 30 feet above Big Lake. On the west side of ridge, where the road enters the gorge, to pass east, the Tully Limestone is below the road, and the gorge is cut entirely Genessee Shales and Portage Shales. This corresponds with the fact, that it sinks below Tioughnioga Valley on the west side, a short distance below Big Lake; while, on the east side it