Q4^ 



Stevenson.] ^^ [August 20, 



This coal is well adapted for use in the furnace, as it has an extremely 

 low percentage of sulphur and ash. The analysis just given may be com- 

 pared with one of the Sharon or BlocJc coal, which is used extensively in 

 the iron works of eastern Ohio. This is also by Mr. McCreath, and is 

 given in Report MM of the 2d Geol. Surv. of Penn., p. 99. 



Water at 225° 3.790 



Volatile matter 35.300 



Fixed carbon 53.875 



Sulphur 0.675 



Ash (T^^. ..^ 6.360 



Coal bed, No. 28, is very similar to the last. It is 3' 6" thick on 

 Preacher run, but is 4' 6" on Looney creek. It is persistent throughout 

 the area examined and holds its thickness well. 



Only the blossom of No. 25 was seen. No. 37 is persistent but always 

 thin. Lying as it does between two plates of hard sandstone, it is often 

 useful in indicating the place of the large bed below. 



Coal bed. No. 29, is exceedingly variable, though altogether persistent. 

 It has been opened on Pigeon fork at probably two-thirds of a mile above 

 the mouth of the stream, where it shows : 



Coal 6' 10" 



Shale 0' 10'^ 



Coal 2' 5" 



Shale, averaging 0' 3" 



Coal 4' 6" J 



14' 10" 



A similar structure was seen on the first branch of Pigeon fork, and at 

 both localities the upper division is so slaty as to be apparently of little 

 value. The middle division is soft, has a prismatic structure and cokes 

 ■well; the lower division is, for the most part, a splint coal of very fair 

 quality, though it is somewhat inclined to be slaty near the base. On 

 Looney creek, only the middle and lower divisions remain, the upper divi- 

 sion having been removed by a horseback of clay. The character of the 

 remaining divisions is the same as on Pigeon fork, but the coal is more 

 liked and that from the middle division is carried to long distances for use 

 by blacksmiths. Eastward from Looney creek, the bed is exceedingly 

 variable ; on Preacher run it is but two mches thick, on Kelly's run it is 

 insignificant, and on Church House run it seems to be not more than one 

 foot. But at an exposure near Roaring fork, at about two miles above 

 the head of Big Stone gap, the bed is evidently very thick, though the ex- 

 posure is too indefinite to admit of definite measurement. At all localities 

 the lower parting shows many impressions of Sigilluria and Syringoden- 

 dron. 



As the middle division of this bed seemed to be a good coking coal, a 

 sample was forwarded to Mr. McCreath for analysis. Its composition is : 



