SUPPLEMENTAL REPORT—HANGING ROCK DISTRICT. 923 
Coal and associated strata at Baird’s Furnace, Monday Creek township, 
Perry county, with one of the nearest unequivocal and unquestioned 
exposures of the Gray Limestone, with its overlying ore, viz. at Hope 
~ Furnace Station, Brown township, Vinton county. The limestone ore has 
been worked almost continuously from this point, westward and south- 
ward. Along this line, which traverses Green and Starr townships, 
Hocking county, in the direction of the strike of the strata, sections 
were measured at short intervals. The Zoar Limestone was taken as the 
lower limit of the section and the Nelsonville coal as the upper. The 
whole series embraced in these limits was carefully measured at the point 
of beginning, its thickness there being one hundred and forty feet. It was 
then followed bodily to the southward. Measurements were taken at all 
available localities, generally with the hand level, but enough sections 
were re-measured with the engineer’s level to give assurance that the 
_ results were entirely reliable. 
From all the sections measured, five that are strictly representative of 
the districts in which they occur, are given in the accompanying diagram. 
They are as follows: 
1. * Baird’s Furnace—Monday Creek township, Perry county. 
2. * Hay denville—Hocking county. 
3. Union Furnace—(Section 35, Starr township), locking county. 
4A I. Reasoner’s—(Section 29, Brown township), Vinton county. 
5.  *Ilope Furnace—(Section 19, Brown township), Vintoa county. 
Those marked with a star were measured with an engineer’s level. 
No extended explanation of these sections is required. The main 
question to be raised will be as to the certainty of the limits of the 
sections, but in regard to this, there is no ground of difficulty. The 
Blue, or Zoar Limestone, which is the base, is throughout all this region 
very persistent, and very well marked. It is found wherever it is due, 
almost without exception. Its place is rendered all the more conspicu- 
ous by the block ores and coals that are associated with it, and which 
have been worked at many points. The same certainty exists as to the 
Nelsonville coal. There is, in fact, no question as to the identity of the 
Mineral City and Nelsonville seams. The Cambridge and Shawnee Lime- 
stones stretch in unbroken beds from one field to the other, furnishing 
elements that cannot be mistaken in sections that prove identical. 
Prof. Andrews traced the coal, by way of Carbondale, to the Marietta road, 
and the outcrop is scarcely interrupted throughout the whole region. It 
can also be followed with but very little interruption by way of Five 
Mile Creek to Carbondale. 
Ti:e sectionsare practically identical. In those that are given, differences 
of afew feet are recorded, but as much range is found in the sections 
of any one neighborhood as these show throughout the extent of the line. 
