PLATE II. 



A Boggs limestone in stream bed ; Lower Mercer limestone protruding from bank. 

 Blunt Run, Muskingum County (Locality 27) 



B Boggs limestone below, with Lower Mercer limestone and Middle Mercer coal 

 above. Exposure along Wheeling & Lake Erie Railroad near Rock Cut, Mus- 

 kingum Township, Muskingum County (Locality 28) 



