250 



COAL MEASURES. 



Section of Coal Strata at Wheeling, Va. 

 Feet Fig. 46. 



10 1M/0MMa \ ™<>wishclay. 

 12 



^ 2. Sand rock — argillaceous and 

 slaty. 



3. Silicious roc&--resembles horn- 

 stone. 



4. Clay, or argillaceous deposite, 

 with nodules of limestone. 



5. Sandstone — fine-grained, used 

 for grindstones. 



6. Coal. 



7. Limestone rock. 



8. Bituminous Coal. 

 1 p£# r ^lf' J§ 3 9. Slate clay. 



/ ||||| |H 10. Coal. 



12. Limestone rock. 



li 



'///, 



60 



13. Sandstone rock. 



1824s 



ee 14. 5toy cZay. 



15. Bed of Ohio river. 



Note. — A mile and a half from this section, a bed of coal 12 

 feet thick crops out from the side of a hill at such an angle of 

 elevation, that, were it continued, it would be at the height of 

 200 feet above stratum No. 1 of the series ! 



