SUPPLEMENTAL EEPOET — HANGING EOCK DISTEICT. 923 



Coal and associated strata at Ta^rd's Furnace, Monday Creek (ownship, 

 Perry county, with one of the nearest unequivocal and unquestioned 

 exposures of the Gray Limestone, with its overlying ort^, viz , at Hope 

 Furnace Station, Brown township, Vinton county. The limestone ore has 

 been worked alroost continuously from this point, westward and south- 

 ward. AloDg this liLe, 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 coil as the upper. The 

 whole series embraced in these limits wa9 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 sei tions 

 were re-measured with the engineer's level to give assurance tLat the 

 results were entirely reliable. 



From all the sections measured, five that are strictly represent it ive 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. * llaj den ville— Hocking county. 



3. Union Furnace— (Section ;'.5, Starr township), Hooking county. 



4. r. Reas )uer'8— (Section 29, Brown township), Vinton county. 



5. * Hope Furnace — (Section 19, Brown township), Vintoj county. 



Those marked with a star were measured with an engineer's level. 



No exlCLded explanation of these sections is requirtd. 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 dilEculty. 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 exints as to the 

 Nehonville 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 irom one field to the other, furnishing 

 elements that cannot ba mistaken in sections that piove 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. 



Tt.esectionsare practically identicah In those that are given, difierences 

 of a few 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. 



