252 



COAL MEASURES. 



Section* of the Rock Strata at the Salt-works at Kis 

 kiminitas, Ohiof 



Fig. 48. 



1. Yellow argillaceous soil. 



2. Sandstone rock — slaty, friable. 



3. Sandstone rock — argillaceous 

 containing vegetable relics. 



4. Shale — bituminous, slaty. 



5. Coal. 

 ^ 6. Slati/ clay, 



^ 7. Sandstone. 



^ 8. Shale — black and bituminous. 



9. Coal — bituminous, compact. 



10. Slaty clay — carbonaceous. 



11. Sandstone rock. 



12. Limestone rock — carboniferous, 

 ////^ containing fossils. 



13. Sandstone rock — hard, argilla- 

 ceous. Forms bed of river. 



The lowest members of tbis thick series of the 

 carboniferous strata of the Alleghany range, as we 

 have already remarked, are generally red, green, 

 and buff-coloured sandstones, often very argillace- 

 ous, the whole having a probable thickness of 1000 



* These sections are taken from Silliman's Journal, and Were 

 drawn up by Dr. Hildreth, of Ohio. 



