SUPPLEMENTAL EEPORT — HANGING EOCK DISTRICT. 913 



River. There are Eometimes two in the series, though more frequently but 

 one. It has the name of Coal No. Ill in Dr. Newberry's classification. 

 As it is followed through the State, it acquires various local names de- 

 rived from points where it is worked. At Flint Ridge, in Licking 

 county, it is the best cannel coal of the State, and it is accordingly quite 

 widely known in this region as the Flint Ridge Cannel. In the Hocking 

 Valley it no where attains importance, though its presence is almost 

 always to be recognized. Near Logan it was mined some years ago for 

 the manufacture of coal oil for distillation. The seam is here a cannel, 

 but of poor quality. In Vinton county it furnishes far more coal than 

 in any other division of the Hanging Rock District. Two seams, under- 

 lying or representing the two divisions of the limestone, are found here 

 from fifteen to twenty-two feet apart, each of which attains a fair thick- 

 ness, though the quality of the coal is no where such as to warrant its 

 use for anything more than- local supplies. It is called the Dowd,seam at 

 Zale?ki. In the vicinity of Hamden Junction the seams have been 

 worked to a small extent as the Ely Coal and Wilbur Coal. 



South of Vinton county the place of the seam is generally kept by a 

 bed of black slate or impure coal ; but it is not known to furnish any 

 fuel throughout this region. When at its best the seam exhibits frequent 

 changes of quality. There is always more or less cannel coal in any 

 large development of it, and it is rare to find a workable thickness of the 

 seam that does not contain a large proportion of worthless bone coal. 



The coal of this horizon, then, makes a comparatively unirnportant 

 addition to the supply of the Hanging Rock District. It is not known 

 to be brought into the market at the present time by any line of railroad. 

 All the attempts to establish a coal busineys upon this seam in the dis- 

 trict have so far failed, the product being unable to maintain itself in 

 competition with the excellent seams that are fjund below it, as well as 

 above it, in the geological scale. 



Coal No. Ill is often underlain by heavy and locally valuable beds of 

 fireclay and potter's clay. 



4. The seam next to be named, Coal No. Ilia, is deserving of a full 

 number, certainly in Southern Ohio. It is a steadier and more important' 

 seam throughout this field than Coal No. III. Thoughitis.no where 

 worked for the general market, it supplies a considerable amount of fuel, 

 locally. It is separated by an interval of thirty to forty feet from Coal 

 No. Ill being associated with the Gore Limestone, one of the accessory 

 seams of the general section. It bears the same relation to this lime- 

 stone that the seam below it does to the Zoar, each being roofed with the 

 limestone. It is to be remarked that a thin coal is frequently found di- 

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