The Strawn is said to be 400 ft thick and here it has thinned down to less than 200 feet. Mr Coy tells me that it thins both to the N and S. What does this mean in glaciography? Little reports before mention marine fossils, though what I saw of the Strawn gives me the impression of delta deposits rather on the marine side than on the fresh water. The several coral beds and the soft sand accumulations may indicate rather the land ward side of the delta. If a delta deposit where was the land, in the E or in the W? Probably in Dr W Calhoun's. On what basis did Drake call this sandstone and conglomerate Canyon? The chest conglomerate are interbedded with a fine grained deciduous conglomerated sandstone. Can these deposits be of desert formation interbedded with river wash chests? Has Drake any marine fossils away from sandstones? Bryan thinks they may be river channel material. For the present I cannot say.