45,2 ON THE GEOLOGY OF THE ENVIRONS OF NICE. 



As the formation of these gravel heaps still continues to 

 proceed before our eyes, it would form a very curious subject 

 of speculation, if the progress of the mounds which are evi- 

 dently projecting by every river which pours itself into the 

 Mediterranean, could be ascertained. It would be curious to 

 learn what period of years was required to make any sensible 

 difference on the soundings at the embouchure of the Var, and 

 although much allowance would require to be made, still ac- 

 curate observations of this sort would afford some data, by 

 which the probable period requisite for the formation of the 

 banks above might be computed. 



APPEN- 



