HOCKING VALLEY. 689 
in this neighborhcod, and of sufficient thickness to mine by drifting. 
The ore rests upon a white fine clay, and is bedded in clay colored red by 
the iron. This ferruginous clay extends up to a thin seam of coal five to 
ten feet above the ore, and is generally so compact as to constitute a good 
roof. The ore can be mined without blasting, but the nodules are some- 
times so large as to make it difficult to handle them. One was observed 
which probably contained sixty cubic feet of ore. Ore No. 6, is about 
thirty-six feet above the Bayley’s Run coal, and generally about eleven 
feet above No. 4, and rests upon a seam of splint coal which is reported 
to be in places four feet thick. The deposits on this horizon vary greatly 
in character. On Jones’s Run, fraction 1, Trimble township, it is a cal- 
carous ore three feet thick, yielding twenty-nine to thirty-three per cent. 
iron. At the Dug-way it is a lean black band two to four feet thick. Its 
outcrop can be seen on L. Weathee’s land, section twelve, Dover town- 
ship; on the Fulton farm, Green Run; on sections eleven and seventeen, 
Dover township, and in nearly all the localities where No. 5 is found. 
This is substantially the horizon of the Iron Point ore of Shawnee, and 
the Black Band of the Tuscarawas Valley. The ore there rests upon the 
coal. An impure black band is here found in the same position, but the 
great body of the ore is at a lower horizon, generally resting on fine clay, 
bedded in fine clay, and often with the fine clay continuing above to the 
coal. It is evident that substantially at the same time over a greater 
part of the coalfield of Ohio there were conditions which brought in and 
deposited coal and iron ore in and about on the same horizon. The fact 
also that in this horizon the amount of ore bears an inverse ratio to the 
amount of the underlying coal tends to confirm Professor Hunt’s theory 
of the mode of the deposit of the iron ore, and that the carbonacous mat- 
ter where the ore deposits are the largest was consumed in effecting the 
deposition of the iron. 
Ore No. 7 rests upon the Cambridge limestone, about forty feet above 
No. 5. It has been imperfectly opened in two localities only, sections 
twelve and thirty, Dover township. It isa rich ore, well oxydized and six 
to thirteen inches thick as far as exposed. The clay above is filled with 
small nodules of ore indicating a thick bed when the roof rock is reached. 
The limestone below it is also quite ferruginous, and the indications are 
_ favorable for the development of a large quantity of valuable ore on this 
horizon. : 
On section twenty-four, Dover township, an opening has been made 
seventy-three feet below the Ames limestone, which shows a peculiar 
conglomerate ore, No. 7a, a mixture of very hard blue carbonate with iron 
oxide in small fragments cemented into solid nodules as though the two 
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