The following section was given me by McGee: Beginning at the base of the Pennsylvanian and going upwards. Massive formation. Atoka. Mostly ss. with lens of shale. 1500 to 4000 ft. Usually said to be 4000 feet thick. Hartsborne ss. 700 to 2000 ft. Has some shale members, and some coal. Cherokee shales and some ss. 1000 ft. Made up of McAlester 500-4000' Has coals, Saranoch ss. 300-700' Bogy ss. and sh. 1500 to 2000' Ivona sh. Each 50 to Thurman ss. = higher ss. beneath Fort Scott. 200 ft A shale member thick. Calvin ss. = Fort Scott. These thicknesses do not occur in any one place. Probably at no place is there more than 1500 to 6000 ft. In some districts see U.S. G.S. Atlas Atoka, Edgato and Muskogee.