West of the Alleghany Mountains. 



245 



Descending from the summit to Quaker City, thirty-five 

 miles west from the river, only six can be seen, and at 

 Quaker City the crinoidal limestone occurs. The relatV)u of 

 the sections is as follows : — 



It is evident from these sections, that east and west of the 

 summit the strata are identical to No. 10 ot each, including, 

 as was previously shown. No. 11 of the second ; and it is 

 equally evident that'No. 12 of the second cannot be No. 11 of 

 the first, but that it must be Goal VIII or the Pittsburg. The 

 internal anatomy of the bed shows this, for even along the 

 Central Ohio railroad, where the upper division has been re- 

 moved, we find the charact;eribtic pyrites band and the olay 

 partings. But in order to remove all possible doubt, the 



