FOUND IN DEEBYSHIKE. 



127 



series, commencing with the forty yards coal, and terminat- 

 ing downwards with the feather-edge coal lying on the 

 rough rock. 



The dip of the coals varies. On the east side of the 

 mine, in the workings of the 18 inches seam, it dips at 

 an angle of 10° to a little north of west; but this dip 

 gradually lessens until the measures become level as you 

 approach the west, when they take an easterly dip. They 

 therefore form a synclinal axis, and are no doubt part of 

 Mr. Farey's Goyt Trough.* 



The fissure in which the sulphuret of lead is found, runs 

 about N.E. and S.W. ; and one of the miners assured me 

 that it crossed Edale, and then ranged along the country in 

 a N.E. line, so that it probably extends to Balterstone 

 chapel, in Yorkshire. 



About 400 yards to the south of Mr. Gisbome's vein 

 is another, running parallel to it. The first-named vein is 

 nearly vertical, but hades a little to the north. There is 

 no heave in the strata showing a displacement, the level of 

 the coal on each side of the seam being the same. 



The vein has been proved to extend from the gritstone 

 (rough rock), to within about 20 yards of the surface, and 

 it probably proceeds up to the grass. 



The fissure appears to be a simple crack, traversing the 

 different strata, and bears lead about equally in all the beds, 

 whether they are arenaceous or argillaceous. No vein 

 stuflf is found with the lead except a little iron pyrites; 

 and the lead appears adhering to the walls of the mine, 

 without either sparry or ochery matter intervening. The 

 vein is often nipped, and varies from nine inches to thin 

 threads in thickness. Where it separates into threads, it 

 traverses the shales and sandstones vertically. 



The strata composing the sides of the vein — very unlike 



* See vol. i. p. 172, of Farey's General View of the Agriculture and 

 Minerals of Derbyshire. 



