34^ 



ILLUSTRATIONS OF THE 



and when we refledt, that, from the appearances 

 of walte and degradation which thefe moun- 

 tains exhibit, it is certain, that the fchiftus muft 

 have reached much higher than it does at pre- 

 fent. 



It is obvious, therefore, that when the cor- 

 refponding parts are brought together, and pla- 

 ced in their natural order, no room is left for 

 the reproach, that this fyllem is inconfiftent 



r 



with the exijtence of granite mountains, X have 

 no pleafure in controverlial writing ; and, not- 

 withftanding the advantages which a weak at- 

 tack always gives to a defender, I cannot but 

 regret, that Dr Mutton's adverfaries have been 

 fo much more eager to refute than to under-, 

 iland his theory. 



305. A remark which Dr Hutton has made 

 on the quantity of granite that appears at the 

 furface, compared with that of other mineral 



bodies, h^s been warmly conteiled. Having 

 affirmed, that the greater part of rocks bear 

 marks of being formed from the wafte and dc- 

 compoiition of other rocks, he alleges that gra- 

 nite, (a ftone which does not contain fuch 

 marks), does not, for as much as appears from 



a(5tual obferyation, make up a tenth, nor perhaps 



even 



