V 



HUTTONIAN THEORY. 



385 



of Mont Blanc has been found, as mentioned 

 above, on the fides of Jura, and even on the fide 

 of it fartheft from the Alps. Now, in the pre- 

 fent ftate of the earth's furface, between the 

 central chain of the Alps, from which thefe 

 pieces of granite mud have come, and the ridge 

 of Mo'nt Jura, befides many fmaller valleys, there 

 is the great valley of the Rhone, from the bot- 

 tom of which, to the place where they now lie. 



height of 



fs th 



could 

 made 



th 



to 



by any force 



fcend over this height 



3000 feet. *^tones 

 t we know of. be 



W' 



muft 



- ««•"* his k 



therefore fuppofe, that when they travelled from 



EE 



'% 



Mont Bla 



J 



th 



deep valley did not 



ft, but that fuch a uniform decl 



■■•■ilDil on tk fu can run on wi 



05 af ralleyi, 



u place, 

 r^ttcc tie great 



fum 



h rapidity, extended from the 

 the other. This fuppofition ac- 



^^^ r 



cords well with what has been already faid con- 

 cerning the recent formation of the Leman Lake, 

 and of the prefent valley of the Rhone. 

 346. We can derive, in a matter of this fort, 



d from calculation ; yet we may 



our hypothefis tranf- 



laws of probabi- 



but little 



difco 



ver 



by 



heth 



greffes materially againft the 



lity, and is inconfiilent 



idy eft abii filed 



Th 



[ phyfical principl 



horizontal diftani 



from Mont Jura to the granite mountains, at th 



head of the Ar\ 



may be accounted fifty geo 

 B b graphii 



t 



