GEOLOGICAL SURVEY OF KENTUCKY. N. S. SHALER, DIRECTOR. CHEMICAL REPORT OF THE SOILS, COALS, ORES, IRON FURNACE PROI)UTS, CLAYS, MARLS, MINERAL WATERS, ROCKS, &C., OF KENTUCKY, BY ROBERT PETER, M. D., ETC., ETC., CHEMIST TO THE KENTUCKY GEOLOGICAL SURVEY. ASSISTED BY JOHN H. TALBUTT, S. B., CHEMICAL ASSISTANT. SECOND CHEMICAL REPORT IN THE NEW SERIES AND THE SIXTH SINCE THE BEGINNING OF THE SURVEY. -18