6o2 On the Aerated Barytes. 



" The Mine confifts of feveral Veins interfefling^ 

 thefe ftrata, nearly perpendicularly and running in 

 various dire6lions, as reprefcnted in the annexed 

 Plan.* Mofl: of the veins appear to have their 

 beginning-j- in the Chorley Road Vein which croffes 

 the valley at its entrance, from whence they run 

 eaftward into the Hopes of the adjacent hills. The 

 Old or Sun Vein, which is the principal one, runs 

 for the moft part in degree twenty-one of the 

 miner's compafs, which is a fnnall deviation from 

 due eaft. It is in general from fix inches to three 

 feet in thicknefs, and does not fall quite perpen- 

 dicular, but inclines or dips a very little to the 

 North, till it arrives at the bottom of the fecond 

 flratum of fand-ftone, when its inclination becomes 

 of a fudden much more confiderable, in fo much 

 that in the fixteen and a half yards to the bottom 

 of the fhaft, it is thrown five yards out of the 

 perpendicular. The fame happens to the Engine 



* I received this plan as alfo much of my other Inform- 

 ation, from the overlooker of the mine, an intelligent 

 miner. It is exaft as far as my obfervation goes, at lead 

 fufficiently fo, to give a general idea of the direftlon of the 

 veins and their fituation with regard to the adjacent 

 valley. 



t A quantity of ftagnant water lying in the Chorley 

 road vein, prevented me from examining whether thefe 

 veins were continued to the weft of it, but the overlooker 

 alTured me they were totally cut off by it, which is no 

 uncommon cafe. Vide. Von OppeVi Bericht I'on Bergbau, 

 § XXXVI. p. 10. 



and 



