'^N;i 



lIUtTONIAN THEORY. 



3S3 



the beds only, but the whole of the valleys, oi 

 rather fyllem of valleys, through which the} 

 iiov/. 



is deraonftrated on a principle which 



a 



clofe 



ffinity to that^ on 



h chances are 



conceive 



iifually calculated, § 99. In order to 

 rightly the courfe of a great river, and the com- 

 munication fubfi fling betv;een the main trunk 



and its 



ft branche 



let us take the in- 



^T- 



•' '^'iUiitlj|, fiance of the Danub 



-•-^d to fee. 



d 



afl 



of 



our eyes ont 



'■... 



maps conflruaed by Marsigli, for 





*s of the li 



^-:-: travel fe 

 •ir'^Toftkc; 



illuHrating th 



ver 



* 



ral hiftory of that great 





When it is confidered, that over all the 

 vafl and uneven furface, which reaches from the 

 Alps to the Euxine, and from the mountains of 

 Crapack to thofe of Hcemus, a regular commu- 

 nication is kept up between ev( 



mtr mi u 



f 



the line of greatefl depreiTion 



ry point 

 which th 



d 



fl 



no 



that it is the agency of 



one can hefitate to acknowledg 



Z.3^^\ has opened the 



waters 



hich 



• 1 



w 



hich _ 

 refentft"'"' fuppofe 



a free palTage through 



f^ 



OS t^' - 



[4 '■ 



and that fome fudden 

 to ered a barrier of 



f this amazing labyrinth. In elFe<fl 



interrupted 



communication to be 



peration of 



c\i^ 



] 



Theife or the Drave, as they rolled the 



to oppofe th 



f> 



s 



Danube. From 



i 



i 



hat could poffibly 



fnlt, but the damming up of thofe rivers till 



Z 



their 



■ 1. / 



rtj. 



*. 



Hiftoire du Danube^ torn, i* tab. 34, 



