86 GEOLOGY OF OHIO. 
coal and the Lower Freeport horizon does not appear in either of these 
sections, but it is quite frequently found in the neighborhood. It has 
been opened at Warden’s Salt Works, and it is worked on a small scale 
at Oldham’s, 2 miles below Cambridge. The vein, though thin, is 
FLEV RE XW 
Secriime 2 CAWESDeE, 
TUNNEL HILL. 
Co al, hadevsoaSeana of Nadrews! Blossous!)//saaaanannns 
Ges, NO de ee 
Lia. estone, Canalbvidde (formerly worked)... & cA | + —l 
laberval, Tennent a0) 
() oul, ee Creek ocSalineville Stripein(l? wnt 
Fiwe-clay aad Ove balls. CAA 
Pern remem emp e MF AB. ae 
Sandstone, Mahoning seen... 2. : 
Coal , Upper Heeeport, me bette sorenirstntnd 
Metco ae Ua a] 
Limestone Upper Feeeport. Aha me 
Concealed. Lae NO 50. 
Coal, Lower | 1 Wedbsren corssnndlll Reacdl 
aye Scout ee va appr YS oN 
Goucealed to Wills ‘at ee 
Place of Upper Kittomaing ? Coclteni An 
