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HUTTONIAN THEORY. 



373 



the truth of Lord Bacon's maxim, That the ex- 

 planation of a phenomenon (hould not be fought 

 for from the ftudy of that phenomenon alone, but 

 from the comparifon of it with others. One of 



the theories of th 



pla 



is. that the b 



which' is the bafe of it, is formed from the con- 



fohdation of the loofe gravel of 



plain, by 



ater percolating through it, and carrying fome 

 menting fubftance along with it, or fome la- 



And 



pidific juice, as it is called 



ther the gravel is formed from the b 



the breccia from the 



deed 



he 



or 



probably could 



b 



of the pla 



gravel, is a queflion which 

 : refolved by the mere 



1 



tfelf 



B 



the q 



': the plain ai; ftion is very foon decided, when we compare 



'ratftratuffloffi 



wh 



is obferved h 



th oth 



ppearances 



the natural hiftory of the earth's furface, and 



freq 



th 



decom 



than their reconfolidat 



confider hpw much i 



pofition of folids is, 



in any place above the level of the fea. 



335. The argument for the decompoiition of 

 ftony fubftances which is afforded by the (late of 

 this lingular plain, may be confirmed by the ap- 

 pearances obferved in many extenlive tradls of 

 land all over the world, and efpecially in fome 

 parts of Great Britain. The road to Exeter from 

 Taunton Dean, between the latter and Honiton, 

 pafles over a large heath or down, confiderably 

 elevated above the plain of Taunton. The rock 



Aa3 



which 



