Lincoln G. 1873. Clay from head waters of Carlen river, on land of Mr. Thos W. Varma, Bed 2-4 ft from the surface, said to be 42-45 feet thick, resting on black shale which is 50 ft thick. Clay imperfectly laminated of a dark olive-green color, passing to a gray buff color. Silica. 61.58 Alum 23.946 Iron peroxide 5.814 Lime .201 Magnesia .850 Pot ash 1.542 Soda .362 H2O + loss 5.705 P2 O5 Not better 1874. Crab Orchard Springs, Salts, put up by Crab- Orchard salts co. J B Wilder & Co. Louisville. 1875 Crab Orchard Salt. Arthur Peters Co. Louisville. Mag. Sulphate 54.842 60.627 Soda " 13.566 8.26 Pot ash " 2.707 2.814 Lime " 2,149 1,795 Litlula " .038 .028 Sodium chloride 2,954 1,874. Lime carb. .032 .018 Magn " .089 .036 Iron peroxid .078 .028 Silica .124 .118 Total of crystall- 23,421 24.402 Zation + loss 1874 1875-