232 The Upper Goal Measures 



inches to three feet thick. It is seen somewhat thicker on 

 the south fork of the creek. On the eastern side of the 

 basin it is seen at several j)oints along Scott's and Robinson's 

 Runs, in Monongalia Co., W. Va., as well as in Greene Co., 

 Penn. Its greatest development is seen on Scott's Run, 

 where its changes are almost as interesting as in Belmont Co. 

 Ohio. Two miles and a half up the run several openings 

 are seen which give the following section : 



Coal, 1 ft. 9 in. ; Bituminous shale, 8 in. Coal, 4 ft. 8 in. 



Two miles farther up the run the shale has disappeared, 

 and at an opening near Cassville, the bed shows full nine 

 feet of coal. One mile beyond, the following section was 

 obtained : 



Blue clay, 6 in. ; slaty coal, 1 ft. 3 in. ; clay, with many 

 impressions of plants, 3 to 6 in. ; coal, 2 in. ; clay, 2 in. ; 

 coal, 7 J in. ; clay, 1 ft. 1 in. ; coal, seen, 4 ft. 2 in. 



This opening is likely to prove of considerable interest as 

 the fossils are very numerous and well preserved, while the 

 horizon at which they occur is more than one hundred feet 

 higher than any other yet discovered in the northern portion 

 of the trough. On Robinson's Run the bed shows a tendency 

 to develop in the same manner as follows : 



Bituminous shale, with thin laminse of coal, 2 ft. ; coal, 1 

 ft. 6 in. ; clay, 7 in. ; coal, 4 ft. 8 in. 



Towards the south it rapidly diminishes in thickness and 

 apparently thins out. 



In Pennsylvania the bed is usually double, but is nowhere 

 so greatly developed as on Scott's Run. Near Waynesburg 

 it shows coal, 1 ft. 8 in. ; clay, 1 ft. 2 in. ; coal, 3 ft. 2 in. 

 Near Carmichaeltown, Greene Co., it shows coal, 3 ft. ; clay, 

 3 in. ; coal, 3 ft. The clay is sometimes replaced by black 

 slate with innumerable thin laminae of coal (Rogers). Near 

 Brownsville it is five feet thick and sinsfle. 



In West Virginia the coal from this bed is dry, almost 

 open-burning, gives a strong fire and is highly valued for 

 domestic purposes. It contains a large proportion of pyrites. 



