Harristburg, Pa. Monday Sep. 14-1914 Left Reading at 7 and got to Harristburg at 9. A.M. Then by street car to Rockville which seems to be the same as Flint Hunter. To my great surprise on the northern side of the Blue Mt. about 1/2 mile north of the Susquehannah Bridge, the quarry gone by some in Hamilton Quarry hides three sandstones. They stand in line and in the middle of the quarry saw Chonetes opistalis. The thickness may here be 1000 ft. of sandstone with an ocean and then the quarry in the Hamilton Stone gone. Three or 400 ft higher, I began to get Leon Chemung fauna, Spirifer grandisus, S. medialis like (hip area), Lityphra reticularis, Productella hissuta (crossed spines) and an abundance of crinoid inside, some of it nick in diameter but the majority look like Lamarine forms or other species I mistook for origin in the Hamilton River. or rather eastern side The southern part of the hill has Hamilton shales. Then the hollow. What is on the hill to the south I did not determine. Made it out later after going over where the red Upper Devonian is in great pieces.