The American Geologist, Vol. XXXIV. 
Plate XIX. 
No. 5. Complete thickness of Berea sandstone as shown on Hart- 
man run. Photographed by Mr. Charles C. Wilcox. 
No. 6. Berea sandstone with irregular base and Bedford shale be- 
low as shown on bank of Smith run. Photographed by Mr. Charles C. 
Wilcox. 
