140 GEOLOGY OF OHIO. 
into two or more benches, which are generally separated by fire-clay, 
though sometimes by shale. These partings may increase in thickness 
in short distances, so as to form two workable seams, illustrations of 
which may be seen at Glasgo’s, in Holmes county, and in the shaft at 
Uhrichsville. 
In Licking and Coshocton counties Coal No. 4 is locally from four to 
six feet in thickness, and is cannel of good quality. This is the Flint 
Ridge cannel, and that which is mined in Bedford, and Jefferson town- 
ships, Coshocton county. 
Along the line of the Pittsburgh, Cincinnati and St. Louis Railroad, 
between Coshocton and Trenton, Coal No. 4, with its limestone, generally 
lies at the base of the hills, though sometimes carried beneath the sur- 
face by local waves. At Uhrichsville Coal No. 4 is found nearly seventy- 
five feet below the level of the Stillwater, as has been proved by borings 
and a shaft. It is here double, the two portions being separated by from 
six to twelve inches of fire-clay. In borings made at Dennison, three 
miles distant, they are reported as separated by fifteen feet of fire-clay. 
From Trenton Coal No. 4 may be traced up the valley of the Tusca- 
rawas as far as Navarre, in Stark county, up the Sandy as far as Minerva, 
and up the Nimishillen to the summit in Green township, Summit 
county. In all these valleys it lies above the streams, dipping with 
them, and is exposed almost continuously, and the great changes which 
it exhibits may be accurately noted. 
Between Trenton and Zoar it is generally a cubical coal, from one and 
a half to three feet in thickness, and is of little value. At Navarre, on 
the west side of the river, it becomes five feet thick, with two clay part- 
ings, and looks well. On the east side it is two and a half feet thick, 
and poor. At Zoar station it is two feet thick, a cubical coal. Five 
miles above, in the valley of Connotton, it is five feet thick, very slaty, 
and worthless. At Sandyville it has been mined by J. A. Saxton, Esq., 
is a fairly good coal, but varies in thickness from two to five feet. At 
Kelley’s Point it is an excellent cannel, two and a half feet in thickness. 
At the mouth of Indian Run, below Waynesburg, and on the Trumbull 
Company’s property, it is from four to seven feet in thickness, in two 
benches, of which the upper is an open-burning coal closely resembling 
the Briar Hill. In the valley of the Nimishillen, below Canton, Coal 
No. 4 is usually a cubical coal, too thin to be worked. At Browning’s 
Mill, however, it swells to a thickness of six feet, is partly cannel, and 
very impure. About Canton it is largely mined, is a soft, bituminous 
coal, four feet thick, and of fair quality. At Ruthauff’s Mill, five miles 
further north, it is seven feet in thickness, with two slate partings. At 
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