1 56 Mr. William Phillips on the Veins of Cornwall, 



success. After much labour and expense had been bestowed, it 

 was discovered that underneath the brook forming the boundary 

 between the two mines ran a cross vein of flucan, varying from a few 

 inches to a few feet in thickness ; this vein is beUeved to run quite 

 across the country from sea to sea, heaving, in the phrase of the 

 miner, all those parts of the veins, which it is known to intersect, on 

 the western side of it, higher north than those on the eastern side ; 

 so that those parts of the veins in Tol Carn mine had been heaved 

 by it full eighty fathoms higher north than the other parts of them 

 in Huel Jewel, which however were found to correspond with 

 those in Tol Carn not only in their respective distances but also in 

 dimension. One circumstance however that added materially to 

 the strange consequences of the cross vein was, that although the 

 veins in Huel Jewel were rich quite to the cross vein, those in Tol 

 Carn mine were almost without a speck of ore in them : it was 

 therefore abandoned after a great expense, and consequently a 

 great loss has been incurred. 



Parallel with the veins of Tol Carn mine, but on the south of it, 

 run the veins of the rich copper mine called Huel Damsel \ these 

 have not, I believe, been wrought quite home to the Great Cross 

 vein. By the annexed ground plan it will be seen that a vein of 

 flucan, varying from 2 inches to 2 feet in thickness, but without 

 any perceptible underlie, that is to say, going down in a direction 

 about perpendicular to the horizon, ran nearly north-east and 

 south-west, intersecting the veins of Huel Jewel, the Great Cross 

 vein, and the veins of Huel Damsel, and, to use the miner's phrase, 

 heaving them, in the directions laid down in the plan about two 

 fathoms from their strait courses. This vein is by the miner 

 called a flucan. 



It should be noticed that in the working of the above mines, 



