SUPPLEMENTAL REPORT—HANGING ROCK DISTRICT. 925 
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Furnace), the interval is forty-two feet. In Section twenty-five, Clinton 
township (Hagle Furnace), it is forty-five feet. In Section sixteen, Clin- 
ton township (Hamden Furnace), it is forty-six feet. In Section two, 
Milton township (Lincoln Furnace), it is forty-two feet. In Section 
twelve, Bloomfield township, (Keystone Furnace), it is fifty-five feet. In 
Section four, Madison township (Madison Furnace), it is fifty-one feet. 
In Section thirty, same township (Oak Hill), it is sixty-three feet, and 
in Section six, (Wushington Furnace), it is sixty-six feet. At the last 
four stations the coal is known as the Sheridan seam. 
A geological connection cannot be made stronger than this. There is 
room for an argument as to the identity of the upper New Lexington Coal 
and the Nelsonville seam, though this identity is highly probable, but 
there is no room for argument as to the equivalence of the Sheridan and 
Nelsonville seam. It is demonstrated. 
The same line of facts, of course, holds for the limestone ore. It is cer- 
tain that the limestone ore of Jackson county is the limestone cre of 
Vinton county, though a difference of interval of twenty-five feet occurs 
between it and the next best known horizon, viz, Coal No. VI within 
this area, but not a foot of difference between these t wo horizons occurs to 
the northward, where the limestone ore is known by different names as 
Baird ore and red ore. The outcrop of the ore is continous as far as the 
nature of the ground ailows, and the measures are indentical. The struc- 
ture and character of the ore also is the same through all the dif- 
ferent exposures... ~ | | 
The Gray Limestone gradually loses its volume as it is followed north- 
ward from Vinton county. It is found in full force in Section eighteen, 
Elk township, Vinton county, but northward from that point there is no 
ground high eneugh to hold 2é until the north side of Swan township is 
reached #&n the neighborhood of Mt. Pleasant it is struck at many 
points. The next point to the northward with elevation great enough 
to catch the limestone is Ilesboro, in Washington township, Hocking 
county. The limestone paves the roszds of Ilesboro. It is here at least 
two feet thick, with characteristic fossils and app-arance, and is overlain 
-. with a fine showing of the limestone ore. Thousands of tons of ore have 
been tzken out here and carried to the nearest furnices. The limestone 
underlies much of the east side of Washington and the west side of Starr 
townships, but is not more than a foot thick in this district. Going 
northward from Ilesboro, no other land is high enough to hold it until 
Schultz's Hill, two miles south of Logan, Section t« cnty-five, Falls town- 
ship, is reaehed. Here the ore at least is found with about the usual 
interval (one hundred and seven feet) between it ani the Zoar Limestone, 
the outcrops of which are well shown around the bill. In illustration 
