

volu 



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HUTTONIAN THEORY. 26 



^^^hi and arrangement in the rocks of the latter kind 



t 



'hh. and comparing them with the diforder and ruin 



^« ' that every where mark the footfteps of volcanic 

 Vas L], fire. He does not pretend to determine the nature 



^J of the fire to which the bafaltine rocks 



formation, nor the circumftances in which it h 



jigj a6ted : he is fatisfied with the negative concl 



[f- . iion, that it is not volcanic ; and his paper affords 



• a fpecimen of what is perhaps vare in any of the 



^' fciences, and certainly mod rare of all in geolo- 



, '" gy, viz. a philofophic induction carried juft as 



^"' far as the facets will bear it out, and not a finde 



'"' Hep beyond that point. 



238. Several other hints contained in this pa- 

 per are highly deferving of notice ; for we not 

 only find in it the notion of a formation of ba- 

 faltic rocks, igneous though not volcanic, but 

 mprek alfo that of their fimultaneous cryftallization *, 

 heMii together with the fuggeftion, that granite and 

 5, &cJ!' bafalt are of the fame origin f. Thefe opi- 

 nions had not, I believe, occurred at that 

 gfigetj' time to any mineralogift except Dr Hutton, nor 

 ^^^. had they been communicated by him to any but 

 jjjgfl a few of his moft intimate friends; fo that Mr 



Strange has without doubt all the merit of a firll 

 difcoverer. Indeed, without the knowledge of 



the 



the*' * Phil. Tranf. uhi fupra^ P» ^7 



^il,f'; \ Ihid. p. 36. and 37, 



