236 | GEOLOGY OF OHIO. 
Coal No. 6. In Liberty, Knox, and Wheeling townships this coal is ex- 
posed and worked along Wills and Indian Camp Creeks. In this vicin- 
ity it is now available, as the Marietta and Pittsburgh Railroad affords 
means of transportation. The bed, it is true, is rarely more than three 
feet thick, but the quality is superior. The ash is only 8 per cent., and © 
the sulphur 2.6 per cent., along Wills Creek. This is an excellent fuel 
and a good gas coal, though not so rich as the Cambridge coal. 
Coal No. 4 is available only on Wills Creek, in Liberty township. A 
specimen from the only bank in operation shows it to be a very ex- 
cellent coal, containing only 2.8 per cent. of ash and 1.97 per cent. of 
sulphur. 
fron.—The presence of iron in really valuable quantity is somewhat 
questionable. Associated with the Cambridge coal there is usually found 
more or less of nodular iron ore in the roof shales, and occasionally, no 
doubt, this may be locally of some importance. The same may be said 
of No. 7a. In Tuscarawas county there are well-marked horizons of ore. 
Extensive explorations were making in Wheeling township at the time 
of our examination, but we have not ascertained the result. 
Inme, for building purposes, can not be obtained easily. The Crinoidal 
limestone does not burn well. The limestone over Coal No. 4 is occasion- 
ally good. The best rock is the stratum under Coal No. 8, in the eastern 
portion of the county. 
Water.—The county is well supplied with water for all purposes. 
