DETAILED GEOLOGY OF CLAYSVILLE QUADRANGLE. 175 
a few feet above the valley. The southward dip carries this bed 
under cover a short distance south of this point. Up Crafts Run to 
the west the limestone comes to the surface just east of the first road 
to the north. Here the massive yellow ledge characteristic of this 
bed is finely exposed. These are the only exposures of the Middle 
Washington limestone noted in both townships. No outcrop of the 
Jollytown coal was seen, though its horizon is doubtless exposed 
wherever the Middle Washington limestone comes to the surface. 
The coal is probably present, but at the points examined it is con¬ 
cealed by a mantle of loose rock. 
