26 GEOLOGY OF OHIO. 
FIGURE WAX 
GRINDSTONE HOLLOW SECTION, LOWELLVILLE 
Coace aon ay) Gray Swe = 
C 0 al, \sow: Coton ee Pee ce ee ar ee 
rx«e- clay aud Couce ed vile dO ee ae 
Gwar L_wmestone, Mexrviferous./5 
Slate aud concealed, aie de By ik Pe 
Coal blossom We Gok tee De il tees 3 : eae 
-o ee ee me ee ee ee ee ee ee ee 
Ie 
ce ees nee a 
Slatevock, rer cas 
Riwe-clay amd Sandeock 2 
Slate, Gal Slane 66 
Ae te eh a 
Coal, Five-cha ee , Coal. mann LO E- fF —— 
Limestone, Jonere Never. _ , 
Coal and Fixe cloy i Ted se Oe 6 5 7c 
I Sei 1 
Saudvock, ee: Livcuestone. £6 § 4 ee | 
Mee- chevy ora, Wey. EET 
eee DA aes Je. MW. “XX (a 
Fire - chayy Fi RNR MMO es GO lo RE) gee 
The above section, Fig. VIII, is taken from Grindstone Hollow, 
within + mile of Lowellville. It reaches to the summit of the hill on 
James S. Moore’s farm. It accords with the sections named above in 
all essentials. Three of the strata that have been described in the pre- 
vious pages as determinative of the sections in which they occur, are 
found here. They are the Lower Mercer limestone, the Upper Mercer 
