314 



ILLUSTRATIONS OF THE 



by the matter depofited by 



IS 



to be conceived 



b 



by 



f they 



melted 



g 



derftood 



g IS 



i^ery hard 

 arried in 

 ^re eafily 



The following are fome of the places where 

 the phenomena of granite veins may be diftindt. 



ly feen. 

 281. 



The ifland of Arran, remarkable for 



leding into a very fmall compafs a great number 

 of the mod interefting fads of geology, exhibits 

 ny inftances of the penetration of fchiflus by 



veins of g 



r 



tains occupies the 



A group of g 

 northern extr^ 



ty 



moun- 

 of the 



ifland, the higheft of which, Goatfield 



to the 

 the fouth fide 

 height of 1 100. 



height 



IS 



»f 3000 feetj 

 d with fchiil 



rifes 

 d on 

 the 



v.. 



From thence, the line of June- 



+ ^ 



tion, or that at which the granite emerges from 

 under the fchiiUis, winds, fo far as I was able 

 to obferve, round the whole group of monntains, 

 with many wavings and irregularities, rifing 

 fometimes to a greater, and dcfcending fome- 

 times to a much lower level, than that juft 

 mentioned. Along this li 



the fouth, wherever the rock is laid bare, 

 and cut into by the torrents, innumerable veins 

 of granite are to be feen entering into the 

 fchiilus, growing narrower as they advance into 



it; and being direded, in very many cafes, from 



' below 



me, particularly on 



; 



