252 
COAL MEASURES. 
Section* of the Rock Strata at the Salt-works at Kis- 
kiminitas, Ohio, 
Fig, 4 8. ^ 
I. Yellow argillaceous soil, 
^ 2. Sandstone rock — slaty, friable. 
3. Sandstone rock — argillaceous, 
containing vegetable relics. 
4. Shale — bituminous, slaty, 
5. Coal. 
I Slaty clay, 
^ 7. Sandstone. 
8. Shale — black and bituminous. 
9. Coal — bituminous, compact. 
10. Slaty clay — carbonaceous. 
II. Sandstone rock. 
12. Limestone rock — carboniferous, 
//^ containing fossils. 
^ 13. Sandstone rock — hard, argilla- 
ceous. Forms bed of river. 
The lovrest members of this 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. 
