Sir H. Davy on the formation of mists. 13 1 
It is not my intention to discuss the general subject of the 
deposition of water from the atmosphere, in this paper ; but 
merely to describe a local cause of considerable extent and 
variety in its modifications : and which is not without an effect 
in the economy of nature, for verdure and fertility, in hot 
climates, generally follow the courses of rivers, and by the 
operation of this cause, are extended to the hills, and even to 
the plains surrounding their banks. 
Rome, Dec. 8, 1818. 
