

H 



fnjall 



tbft 



^^ S g -^ 



raff, 



ojie 



T 



^''^ k. 



I Jtl ; 



ntus J 



Into 





4 if 



not 



y# «.».; 



•ell k U 





[ 



if^ 



Bttvc place 



«ig:D«fnr^4e 



•' noftiaili 

 3Mtitf of Ciiih lu 



^;a«oce of aiicialt!' 



the muOKs«'> 



I 



ffV 



1" 



I 



m{l< 



> 



t* 



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of ^^ 



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that 



:ii 





io0 

 olins 



f the fl' 

 hill «l 



J of /' 



HUTTONIAN THEORY. 



3S3 



rents as are juft mentioned, or what he terms a 

 debacle, to have taken place at fome former pe- 

 riod*. If, however, we afcribe to the njoun- 

 tains a magnitude and elevation vaflly greater 

 than that which they now poflefs ; if we regard 

 the vallies between them as cut out by the ri- 

 vers and torrents from an immenfe rampart of 

 foUd rock, neither materials fufficiently great, 

 nor agents fufficiently powerful, will appear to 

 be wanting, for colledling bodies of gravel and 

 other loofe materials, equal to any that are found 

 on the furface of the earth. The neceffity of 

 introducing a debacle, or any other unknown 

 agent, to account for the tranfportation of foffils, 

 feems to arife from under-rating the effecSls of 

 adion long continued, and not limited by fuch 

 fliort periods as circumfcribe the works, and 

 even the obfervations, of men. 



I 



344. The fupply of gravel and cailloux routes, 



for the plains extended at the feet of primitive 

 mountains, is doubtlefs in many cafes much iq- 

 creafed by the pudding-ftone, interpofed between 

 the fecondary and the primary ftrata. The beds o^" 

 pudding-ftone contain gravel already formed on 

 the fhores of continents, thatceafed to exift before 

 ihe prefent were produced ; and the cement of 



this 



* V^yagfis aux AlpeSj torn. iii. § 1303 



« 



