I. Kaolins and Plastic Clays on the Eastern Rim of the Western Coalfield; Notes on Clays in the Western Lead, Zinc and Spardisteict (F. J. Fohs);Clays and Sands of Jackson's Purchase; Clays in the Red River Valley; by James H.Gardner. II. Clays of Silurian, Devonian, Waverly and Irvine Formations. By Aug. F. Foerste. III. Analyses of Miscellaneous Kentucky Clays.
No description available