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 produce 



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v'ept 



HUTTONIAN THEORY. 



3^^ 



fchiftus runninct 



tus. 



them as to any other veins ; for it is but little 

 afFeded by the condition of the phenomena to 

 be explained. Indeed, it is very difficult to fet 

 any limits to the explanations which this theory 

 affords ; and it would certainly puzzle a Neptu- 

 nhl, to affign any good reafon why infiltration 

 has not produced veins of one 

 into another, or veins of fchiltus running into 

 granite, as well as of granite running into fchif- 



He will find it a hard tafl^: to reftraio the 

 adivity of his theory, and to confine its expla- 

 nations to thofe things that really exilt. 



302. As the Huttonian fyfcem cannot boaft of 

 theories of equal verfatility, it would be not a 

 little embarraffed to account for veins of great 



r 



magnitude proceeding from a rock diflindly 

 Itratified, and accompanied with marks of ha- 

 ving difturbed the rocks through which they pafs. 

 I am, however, inclined to believe, that this em- 

 barralTment will neyer occur ; and that the gra^ 

 nite veins do not proceed from the rocks that are 

 really ftratified, but from fuch as have never been 

 depofited by water, and where the appearances of 

 ftratification, if there are any, are altogether il- 

 lufory. This anticipation, however, requires to be 



fied by future obfervati 



and it remains 



be feen, whether granitic veins ever accompany 



real 



g 



llrata, or are peculiar to thofe 



Y 



hich 



N. 



