572 GEOLOGY OF OHIO. 
can be determined. About one mile north, on Mr. Glover’s land, in 
Clark township, the following section was obtained: 
zm Coal No. 6, 100 feet from top ef hill. 
Shaly sandstone. 
Black limestone. 
Coal. 
Sandy shale. 
Coal streak at base. 
Unevenly bedded, massive, coarse sandstone, with 
streak of coal near base. 
Fceleee le Sel noe les) 
Conglomerate. 
This section shows that after the deposit of the lower coals there was an 
upheaval of 280 feet, and a channel plowed by the water to the base of the 
Coal Measures. The thin conglomerate in this neighborhood is cherty, and 
from one of these fragments of cherts I have obtained a fair sized crystal 
of galena, the best specimen of lead ore I have ever seen obtained from 
Ohio rocks. 
Mill Creek. 
one mile east from Bloomfield, lies directly under the gray limestone, a 
seam of fire-clay, seven inches thick separating the limestone from the 
upper layer of coal. This upper layer is bright coal five inches thick, 
under it cannel coal seven inches, and under this two feet five inches of 
geod, bright coal. In the next hill west is Evans’ coal bank, at thirty 
feet higher elevation. This has been opened, but not worked much, and 
was in no condition to enter. The bed is said to be three feet thick, the 
coal to be of good quality. It hasa good cover of sandstone, making the 
summit of the hill. 
Through the western part of Mill Creek, by the “grade road,” expo- 
sures of strata that can be recognized are very rare; and no openings 
of coal are met with. Near the south line of the township the blue 
limestone is seen at several places along the road, sometimes with the 
