Oshkosh Saturday July 18-91 Finished collecting in the quarry visited yesterday after noon. Left on Fond du Lac at 2.37 P.M., made direct connection here for Iron Ridge which place I reached at 5.05 P.M. After dinner walked to Iron Mountain and examined the extensive dig- inge for the Clinton iron ore. This band of ore is at least ten feet thick. The upper surface is uneven and directly overlain by the Niagara dolomite. To the south of the digging on the road to Iron Ridge the Hudson River shales are some- what exposed. Picked up a few fossils and returned to the hotel.