PLATE V. 



A Projecting ledge of Putnam Hill limestone with Brookville coal below ; Tionesta 

 coal, shown by dark streak, a few feet above road. Dugway at Putnam Hill, 

 Zanesville, Muskingum County 



B The Carl Crabtree mine in which Tionesta clay is mined for the general market. 

 Putnam Hill limestone exposed about 15 feet above the mine. Blunt Run, Mus- 

 kingum County (Locality 27) 



