Archeeton, Monday August 25-1913. Returned to the Large Falls of the Sorece To make out if possible the contact between the Medina and the Queenston. It is now clear to one that the large redded, much cross-redde maroon sandstone make the base of the Medina. This sandstone is of very coarse material, much coarser than any sandstone beneath it above it. It also slightly rippled and in time places downs in the under side fills up into some cracks of the Queenston. The Queenston starts in under this sand- stone as a maroon shale, sandy and mica- cious. Within three feet of the top there may be a gray sandstone 4 inches thick and another may come in a foot farther down. In any event none of these sandstones persist but change within one hundred feet into the regulation shales. In general one can say that here at Archeeton the Queenston