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tlUTTONIAN THEORY. 



139 



fent, though true, it muft be ftill imperfed j 

 and it cannot be doubted, that the great prin- 

 ciples of it, though eftabliflied on an immove* 



able bafis, mull yet undergo many modifica- 

 tions, requiring to be limited, in one place, or to 

 be extended, in another. A work of fuch varie- 

 ty and extent cannot be carried to perfeAion 

 by the efforts of an individual. Ages may be 

 required to fill up the bold outline which Dr 

 Hutton has traced with fo mafterly a hand ; to 

 detach the parts more completely from the ge- 

 neral mafs ; to adjuft the fize and pofition of 

 the fubordinate members ; and to give to the 

 whole piece the exadl proportion and true co- 

 louring of nature. 



This, however, in length of time, may be ex- 

 pelled from the advancement of fcience, and 

 from the mutual affiftance which parts of know- 

 ledge, feemingly the moft remote, often afford 

 to one another. Not only may the obfervations 

 of the mineralogift, in trads yet unexplored, 

 complete the enumeration of geological fads ; 

 and the experiments of the chemift, on fubilan- 



ces not yet fubjedfed to his analyfis, afford 

 a more intimate acq 



of foffils. ar 



laintance with the nature 

 d a meafure of the power of thofe 



chem 



gents to 



h 



th 



theory afcribes 



fach vaft effeds : but alfo. from other fc 



lefs diredly conneded with the natural hillory 



of 



