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HUTTONIAN THEORY. 



515 



> 



I 



with fuch accuracy 



IS 



fo 



juft 



o 



d 



1 



mLY be anfw 



in the writers 

 that the earth 



ilruded with fuch a degree of uniformitj^ 



extent may afford 



that a trad of 



very 



large 



inftances of all the leading fads that we can ever 

 obferve in the mineral kingdom. The variety of 

 geological appearances which a traveller meets 

 with, is not at all in proportion to the extent of 

 country he traverfes : ar 



d if he take 



of land fuffi 



por 



to 



d 



fecondary firata, together with 



primitive and 



and plai 

 in maffe 



and 



f 



ftratified bodies in veins and 



gh it be not a very latge part 



f 



the earth's furface, he may find examples of all 

 the moll important fads in the hiftory of foffils. 

 Though the labours of mineralogiits have em- 



', they may 



braced but a fmall part of the glob 



prehended a very large pro 



therefore 



r 



portion of the ph 



and hence a prefumption arifes, that th 



hich 



hib 



at lealt, of geology h 

 tolerable truth, and ai 

 variation. 



'J- 



iw been traced with 

 fufceptible of great 



450- When the phenomena of any clafs 

 general ambiguous, ar 

 plained by different or 



1 



d 



f b 



g ex- 



it or even oppofite theories ; 

 f few of thofe exclufive fads are known, which 



admit b 



r 



hav 



f 



no 



m 



deavours 



ne or a few folution; 

 to exped much fro 



hen we 

 our en- 



general 



Kk 



pt the knowledg 



of 



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