Above the Oreida the Penn. Luroy divides the Medina as follows:- Medina upper sandstone 85 fat. This I would refer to the Salina as stated elsewhere. Medina upper shale - 180 fat. " " gray sandstone - 70 " " " Lower shale 330 Medina as I make it 1260' {I make it 7.0 feet. Lower series 540} {Upper series 580 490 1040} Medina Pennings I could not distinguish these differences. The whole is a dominantly shale series with thin and sometimes thick beds of shale that are usually greenish or gray, and due to pressure, to a silken yellow luster. Near the base are some black shales and near the top appear zones of red shales but to me these later are different from those of the Salina. The Oreida here is characterized by its large fossils, averaging larger than any I saw to the north east. The series is also thinner and the Medina-Clinton is decidedly more highly