THE CARBONIFEROUS SYSTEM. 147 
Urichsville it is quite largely mined and coked by Mr. Andreas. The 
Trenton mines have supplied a large amount of this fuel to the Cleveland 
market for the last five-and-twenty years. Throughout all this region it 
is a typical coking coal, which will make an excellent coke if properly 
washed. 
In Stark county Coal No. 6 runs through all the southern and eastern 
townships. It is the coal mined at Osnaburgh, and highly esteemed in 
all parts of the county for blacksmiths’ use. Throughout Mapleton, 
Robertsville, and Paris this coal is from four to six feet in thickness, and 
fully up to its average of excellence. Near New Chambersburgh it 
crosses the line of the Cleveland and Pittsburgh Railroad, and stretches 
thence continuously through the highlands of the watershed far into 
- Pennsylvania. At Salineville, Hammondsville, and Linton it is called 
the “ Big vein,” and ranges from five to seven feet in thickness; a coking 
coal, not quite as pure as further west. At Linton it is underlaid by four 
or five inches of cannel, which is full of the remains of aquatic animals, 
and is plainly the carbonaceous sediments of an open lagoon in the coal 
marsh. About fifty species of fossil fishes and salamanders have been 
taken from one mine at this locality. 
Just above Steubenville Coal No. 6 dips below the river, and this is the 
seam mined in the shafts at this point—Mingo, Lagrange, Rush Run, ete. 
At Steubenville it is about four feet in thickness; a partially open-burn- 
ing coal of great excellence. It has been considerably used in the raw 
state for the manufacture of iron, but is now more generally coked. At 
Rush Run it is from seven to eight feet in thickness, but is not quite so 
pure as at Steubenvile, and is more broken by partings. 
In all the northern part of Columbiana county this coal is found in an 
almost unbroken sheet. Near New Lisbon it is the coal mined on the 
Shelton, Arter, Teagarden, and Marten farms, ranging from four to seven 
feet thick. About Achor and Palestine, on the eastern line of the county, 
the coal of No. 6 becomes purer, but somewhat thinner than further west. 
This is the seam mined at Carbon Hill, and in this region is generally 
known as the ‘“‘four-foot” or “Carbon Hill seam.” At Achor it is mined 
by Isaac Dike, Burt, Burson, Booth, and others; the coal is from three 
and a half to four and a half feet thick, and very clean, bright, and pure. 
At the Sterling mines Coal No. 6 is worked by Freeman Butts, Hsq., and 
is largely sold as a gas coal. 
Throughout eastern Columbiana county, and over a large area in west- 
ern Pennsylvania, Coal No. 6 is underlaid by a bed of limestone of from 
two to eight feet in thickness; but this disappears, or is only occasion- 
ally seen toward the west. By the Pensylvania geologists our Coal No. 6. 
