6oo On the Aerated Barytes. 



The Mine of Anglezark lies within a diftrifl of 

 the fame name, fituated on the property of Sir 

 Frank Standifh, Bart, about three miles to the 

 eafl: of Chorley, in this county. The country is 

 hilly and of a flratified or fecondary nature, con- 

 fiding of alternate ftrata of Sand-ftone and Argil- 

 laceous Shiftus, interlaid here and there with thin 

 beds of Coal. The Valley, which is traverfed by 

 the principal Veins, runs in an eafterly direftion j 

 the hills on both fides of it are low, though of 

 lleep afcent. I found the Strata upon the fouth 

 fide of it, in the Shatl: called the New Engine 

 Shaft, to follow one upon another in tHe following 

 order and thicknefs. 



i yard loofe Stones and Sand. 

 74- yards Sand-ftone. 

 4- yard Argillaceous Shiftus and Coal. 

 I yard Argillaceous Shiftus. 

 1 6 yards Sand-ftone. 

 i6y yards Argillaceous Shiftus. 



42 yards whole depth of the Shaft, 



In the laft ftratum, in another part of the mine, 

 an Under-ground Shaft has been funk eleven yards 

 deeper, in working which they cut through two 

 or three fmall beds, about a foot in thicknefs, of 

 an exceeding hard bluifti Sand-ftone. 



The Sand-ftone which forms the fecond and fifth 

 ftrata, confifts of fmall angular particles of Quartz, 

 jnterfperfed with others of Mica, and agglutinated 



by 



