270 GEOLOGY OF OHIO. 



The bituminous shale contains numerous thin streaks of coal, which 

 are occasionally aggregated bo as to form a layer one inch. The coal is so 

 superlatively bad throughout at this opening that no effort was made to 

 trace the pyrites bands. Pyrites abounds in all parts, and the outcrop is 

 incrusted with copperas. The coal burns well, and, according to Mr. 

 Campbell, does not clinker. The sandstone frequently displaces the 

 shales, and rests directly on the coal. At this locality No. 10 was worked 

 at one time, but the opening is deserted. 



Mr. John Gibson, in section 29, works Coal No. 10. His opening was 

 so full of water when visited that no measurement could be made, but the 

 coal is said to be three and one-half feet thick. It is hard to dig, and is 

 regarded as inferior to that obtained from Mr. Campbell's bank. In the 

 same section Mr. John Cheney also works Coal No. 10, and finds it three 

 feet thick, and of fair quality for use in the grate. In sections 16 and 22 

 the same bed is worked. In section 16 Mr. Walter Davy has it only two 

 feet ten inches, while at Mr. George Douglass's bank, in section 22, we 

 find slaty coal one foot six inches, and coal seen three feet. At many 

 localities this coal is so bad that it seems good for little else but the manu- 

 facture of copperas. Mr. Davy's bank is thought to yield better coal than 

 the others, and the following is the result of an analysis : 



Specific gravity 1.363 



Moisture 1.60 



Ash 8.00 



Volatile combustible matter 34.40 



Fixed carbon 56.00 



Total 100.00 



Sulphur 3.2S 



Sulphur left in coke 1.91 



Sulphur forming of the coke ^ 2.98 



Fixed gas per pound, in cubic feet 3.25 



Ash Gray. 



Coke 



The peculiarities of Coal No. 11 are well shown in the second cut west 

 of Barnesville, where it gives the following section : 



FT. IN. 



1. Coal 1 



2. Shale 4 



3. Coal 4 



4. Shale 4 



5. Coal 4 



6. Shale 2 



7. Coal 1 



Total 5 4 



