60 Saliferous Rock Formation in the Valley of the Ohio. 



No. Description of strata. Thickness — feet. inch. 



21. Soapstone, in which appears some salt water from the 



stratum of sandstone below, boring from five to seven 



feet per day. - • - - - - 12 



22. Hard lohite sand rock, called the upper salt rock ; 



in*tHis appeared some salt water, with a discharge 



of carburetted hydrogen gas. - - - 24 ' 



23. Slate stone.- - - - - - 5 ■ 



24. White or light grey sandstone. - - 13 



25. SZa^e 5^one with yellow ochre mixed. - - 14 



26. Bituminous coal. - - - - 16 



27. White sandstone. - - - - 14 



28. Bituminous coal. - - _ ~ 3 



29. Slate and soapstone. - - - - 10 



30. Slate intermixed with sand of bluish tint. - 19 



31. Soapstone.^ - - - - - 3 



32. White or light grey sandstone. - - 5 



33. Slate rock. - - - - - 7 



34. Very hard, dark colored rock, probably mixed with iron. 2 



35. Light colored slate mixed with sand. - ■ - 15 



36. Blue slate stone, the upper portion of stratum nearly 



black. - - - - - 34 



37. White sandstone, very hard. - - - 4 



38. Blue slate rock. - > - - 36 



39. Very hard rock, iron stone, boring only one inch per 



day. - - - - - - 4 



40. Light colored slate, mixed with sand. - 31 



41. Very hard rock, iron stone boring, one inch per day. 1 



42. Black slate rock. - - - - 6 



43. Hard blue sandstone. - - - - 17 



44. Bituminous coal. - _ _ _ 3 



45. Hard, sandstone, part brown and part light colored. 24 



46. Bituminous coal. - - ' - - 2 



47. White slate. . . ' . . -3 



48. Very light colored sandstone. - - 13 



49. White calcareous sandstone, with pBYticles of pure sah 



intermixed, very dense in its texture, and affording 



but a small quantity of water. - - - 34 



• Called also argillite, in the MS. 



