830 



GEOLOeY OF OHIO. 



On the east side of the Hocking River the Nelsonville seam is easily- 

 traced from the hills back of Haydenville, down past the town of Nelson- 

 ville to the mouth of Monday Creek. The coal is everywhere success- 

 fully mined. At the extensive mines of Peter Hayden, Esq., the seam 

 measured six feet four inches in thickness, with partings quite similar 

 to those found in the Brooks bank already referred to. Samples of coal 

 sent from this mine were analyzed by Prof. Wormley : 



No. 1, lower bench. 

 No. 2, middle bench. 

 No. 3, npper bench. 



These analyses show an excellent quality of coal. No. 2 shows an 

 unusually small ash, a very large percentage of fixed carbon, and little 

 sulphur. 



Several years since, Wm. B. Hayden, Esq., conducted, in Columbus, a 

 series of experiments with this coal to determine, in the usual working 

 practice, the relative evaporating power of the coal from different parts 

 of the seam, with the following results : 



Gals. TTater. 



480 lbs. fresh-dug coal, mthout selection, evaporated 337 



480 lbs. stained outcrop coal from top bench evaporated 315 



480 lbs. Straitsville coal evaporated 330 



160 lbs. coal, Ilayden's middle bench, evaporated 97 



leOlbs. " npper " 93 



" The draft was the same in all cases, and the temperature of water in 

 boiler the same. The feed-water was cold but of uniform temperature. 

 Pressure of column of water in draft-gauge, 3-16 of an inch." 



No analyses have been made of the coal from other banks on the east 

 side of the river. The coal, as a rule, is excellent and popular. There 

 are of course localities where the coal contains more than the usual per- 

 centage of sulphur — and the upper bench of coal varies somewhat in 

 earthy impurities — but good coal is sent to market from all the mines. 



