HOCKING VALLEY. 689 



in this neighborhood, 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 consuilaed 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 is a 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 



44 



