Lockport Ry. Whitome quarry. Best section in Gulf for Lockport tr top Medina (down to Gray bands) Chicagana Baye, Arenaceous Cataract limestone with dolomite throughout thick. Has numerous thin fossils. Shales below down to Whitford lime- stone, Williams makes it 22 feet thick. The lower 6 inch limestone is about 6 feet above Whitford sandstone. Williams puts the top of Cataract 18 feet above the 3 foot limestone. A marly sandstone sand to Li cementa comes in above. Rimyeflects tiles. [As it forms thin in too high by] [3 feet]