840 GEOLOGY OF OHIO. 



it, is left for the roof. It may not be very good coal, but I think it is sure 

 to be very dry burning, and it should be investigated. I obtained the 

 following measurements of that portion of the seam mined : 



FT. IN. 



Coal 2 7 



Parting 2 



Coal 2 



Partiog - - i 



Coal 1 6 



The quality of the coal is good, and is reasonably dry-burning. Since 

 my visit the furnace has commenced its blast, and the coal is reported to 

 work satisfactorily. 



I have no detailed measurements of the coal in the upper part of the 

 Snow Fork valley. In the Report for 1869, reference is made to the coal 

 on the land of A. Marshall, Section 85, Salt Lick township. Perry county. 

 It was then reported to me to be eleven feet thick, but the pit being filled 

 with water, no measurements were possible. I have since visited the 

 place but the water was still in the way of measurement. About three 

 hundred yards above the Marshall opening, Mr. Thomas Black bored for 

 the seam and found it sis feet thick, twenty-seven feet below the surface. 

 On the land of Bayiiss Glenn the Nelsonville seam is quite thin, two feet 

 six inehes, if that be it which appears in the floor of the spring-house. 

 Twenty feet and eight inches higher is a thin unopened seam, the inter- 

 val being yellow clay shale, and at an elevation of eighty-two feet, by 

 barometer, is another seam reported to be three and one-half feet thick and 

 of excellent quality. This upper one is doubtless the Bayley's Run seam. 

 East of Bayiiss Glenn's, in Bear Run, on the Maxwell land, a shaft was 

 sunk to reach the Nelsonville seam. It was found to be quite thin. 

 About forty-five feet above the seam in the shaft is the middle or Norris 

 coal, and about forty-five feet higher the Bayley's Run seam. The last 

 interval was wrongly given in the Report for 1869. On the profile map, 

 published with the Report of the State Inspector of Mines, the latter 

 seam at this locality is stated to be the " Great Vein." In the shaft large 

 concretionary masses of an exceedingly hard sandy limestone, were found 

 embedded in a laminated sandstone twelve feet above the Nelsonville 

 coal. Such masses are very common on some of the branches of Sunday 

 Creek, in places where the coal is thin and the shales over it have been 

 disturbed. That the thin coal in this shaft is the Nelsonville seam, I 

 have not the least doubt. Its place along Snow Fork is everywhere ap- 

 parent, and the regular dip should place it beneath the surface on Bear 

 Run. The two seams of coal above hold to it the same relation they 



