Mr. William Phillips on the Feins of Cornivall. 153 



found to traverse a mass of it at about 73 fathoms from the surface, 

 above and beneath which schist only w^as observed. 



The veins of this mine are worthy of attention in regard to their 

 number, underHe, dimensions, and contents. In number they are 

 seven ; the other two may rather be called ofF-sets from a vein 

 than veins. If however they be considered as veins, there are in 

 this mine five of copper, three of tin, and one of tin and copper, 

 in about a furlong and half of country from north to south. The 

 general irregularities of their underlie, both individual and regard- 

 ing each other, are very remarkable : only the Old Tin vein and 

 Bodilly's vein proceed in a straight line, and it will be noticed 

 that the New Tin vein proceeds in five directions, the second more 

 inclining to the perpendicular than the first, the third more than 

 the second, and so on. The South vein varies in width from 

 one to six feet, and was rich in copper from about 35 fathoms 

 until about 70 fathoms from the surface ; that is, through the 

 lower part of the upper deposition of granite, and the subjacent 

 schist ; but at about the place where it entered the granite again 

 it was hard and poor. It was pursued for about 100 fathoms in 

 depth. The ore was a mixture of yellow and grey, and like that 

 of every other vein in the mine, was so extremely bunchy, that a 

 regular course of ore, as it is technically termed, could scarcely be 

 said to have existed in any part of it. Dunkin's vein varied from 

 one to twelve feet in width, and its general underlie differed so 

 little from the perpendicular, that advantage was taken of that 

 circumstance to sink the shaft on its course. It was poor at the 

 points of junction with Martin's and Bodilly's veins, but some ore 

 was found in it between them. It was richer below the latter, and 

 was worked to the depth of about 125 fathoms from the surface. 

 Martin's vein was from about 3 to 6 feet wide, and yielded abun- 



Vol. II. u 



