ON THE ALLUVIUM OF THE PO. 417 



Thirdly, That the extremities of the promontories 

 formed by the two principal branches of the Po, before 

 the excavation of the Taglio di Porto Viro, had extend- 

 ed, by the year 1600, or in four hundred years, to a me- 

 dium distance of 18,500 metres * beyond Adria; giving, 

 from the year 1200, an average yearly increase of the al- 

 luvial land of 25 metres -f*. 



Fourthly, That the extreme point of the present sin- 

 gle promontory, formed by the alluvions of the existing 

 branches, is advanced to between thirty-two and thirty- 

 three thousand metres J beyond Adria ; whence the ave- 

 rage yearly progress is about seventy metres during the 

 last two hundred years, being a greatly more rapid propor- 

 tion than in former times. 



PRONY. 



NOTE, p. 244. 

 On the Universal Deluge. 



MR CUVIER in the present work, and more recently in a 

 note to Mr Lemaire's edition of Ovid's Metamorphoses, 

 enumerates the Mosaic, Grecian, Assyrian, Persian, In- 

 dian, and Chinese traditions, concerning a universal de- 



Or 20,231 yards TransL 



f Exactly 27 yards 1 foot and |th of an inch English. Transl. 



J Already stated at from 19| to 201 miles; or more precisely, from 

 34,995 yards I foot 8 inches, to 36,089 yards 10 inches English measure. 

 Transl. 



Equal to 76 yards 1 foot 7 inches and 9-iOths Transl. 



Dd 



