SUPPLEMENTAl, EEPOKT HOCKING TALLEY. 843 



The coal mines very large and blocky, and is, I have no doubt, pecu- 

 liarly adapted to the blast furnace. 



On Rechter's (or Coal) Pork, the coal is to be seen for a long distance in 

 the bed of the stream. An excavation was made to allow of a vertical 

 measurement, where I found the seam as follows : 



FT. IN. 



Shale 20 



Coal, top bench ., 3 7 



Shale y^ 



Coal, middle bench 5 6 



Shale 1^ 



Coa), bottom bench 3 



Making twelve feet one inch of coal, exclusive of partings. Three 

 samples of the upper bench, to represent different parts of it, were 

 analyzed by Professor Wormley, and the average is given in No. 1 of 

 the table below. No. 2 of the same table is the average of five analyses 

 of samples of the thick middle bench. 



Specific gravity 



Water... 



Ash 



Tolatile combustible matter 

 Fixed caibon 



Total 



Sulphur - 



Sulphur left in coke 



No. 1. 



1.295 



99.99 



0.91 

 0.29 



No. 2. 



1.321 



100.00 



0.81 

 0.43 



At the Welsh bank, on McDonald's Fork, I obtained the following 

 measurements of the Nelsonville seam : 



FT. IN. 



Blue clay shale, with plants. 



Coal, top bench 3 11 



Shale 2i 



Coal, middle bench 5 10 



Parting - i 



Coal 4 



Parting i 



Coal, lower bench 2 9 



Making a total thickness, from roof to floor, of thirteen feet two inches, 

 from which four inches of partings must be deducted. It may be stated 

 that the large block of coal, twelve feet eight inches high, at the Cen- 

 tennial Exposition at Philadelphia, in 1876, came from this vicinity. 



