830 GEOLOGY 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, upper bench. 
No. 1. -No. 2. No. 3. 
Specificvorawity sso sem cee soe eee 1.271 1.258 1 340 
B A'GE RFCs) ect bk ah ane ia St ST Aa Sa pa ag eo chi Mn 6.45 5.30 5.45 
7M}. WSPieeet eat Anan eRe SCAR aay RSI ee oi iy Bs 109 9 36 
Volatile combustible matter .....-........ 32.74 30.12 29.88 
MixediGarbonec sae as cca e See eee eerie 58.56 63 49 55 31 
Motalaid Soha ERAN er REE ie ane 100.00 100.00 100.00 
Sulphuric.) secuecses ee ee merece 1.19 0.64 1.63 
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 foilowing results: 
Gals. water. 
480 lbs. fresh-dug coal, without selection, evaporated ............--------- Od 
480 lbs. stained outcrop coal from top bench evaporated .........-.-2.---. old 
430 lbs. SeaEiomulle Coal. CVAPOLAlediee. sos dec ek cae eeee eee eee ee Eee eOn 
160 lbs. coal, Hayden’s middie bench, evaporated ........---..-.-------- Sa Xe 
160 Ibs. ee upper Heat atten year le tare hee tect eae ests: 93 
“The draft was the same in all cases, and the temperature of water in 
j 1 
4 
> ° A > - ss PS ~y WT ° - OW) 4 = en ttsnic 
boiler the same. ‘The feed-water was cold but of unltorm 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 sau 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 
all Piyts 
earthy impurities—but good coal is sent to market from all the: 
Dew. 
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