68 



PitisLurgh Coal Strata 



0. 



poor quality. It would be interesting to know whetiier stratum 

 No. 3. is the same bed which appears at Beaver, Steubenville and 

 Wheeling, It is more than probable it is so, as the general dip is 



w 



ture it is a lower stratum, perhaps No. 4." 



Mor 



and Brownsville, is 1.30. It contains nearly sixty per cent, of 

 charcoal, ' twenty grains of the coarse powder decomposing 100 

 grains of nitre, showing it to be a superior coal for coakino". 



Section of'Copl HilV at Pittshurgh, {Pa.) at the mouth of the 



. Monongahcia River. 



Order descetidin^ 



-Slight dip to the S. or S. E. 



No. 11. 



Ohio River. = 



30 



2 



G 



G 



.1 



4 



10 



5 



tj 



I 



10 



20 

 14 



8 



9 

 10 





•270 



11 



^ 395 Ceet. 



1. Reddish brown argillaceous earth, intermixed with fragments 

 of limestone ; affording a strong soil for- cultivation .-^20 feet! 



