Evans on the Oil-producing uplift of W. Virginia. 339 
to Rogers, a much more extensive distribution westward, 
from its eastern outcrop in the Appalachian chain, than the 
lower or sandstone group. Iam aware that at the northwestern 
point not very much nearer its line of maximum development 
than this, it is found in boring to have a thickness of not less 
than 700 feet. Besides, the 300 feet of shales which I have set 
middle axis becomes more prominent by comparison, though 
really subsiding; and this finally becomes the sole axis, 
