[ "4 ] 



plants near three hundred are found in the environs of Paris*, 

 many of them much farther fouth, and feme, as the Water 

 LilHes (Nymphasa), Sundew (Drofera), Arrow-head (Sagittaria), &c. 

 even natives of India f. 



In the latitude 44'' on the European, and 34" on the American 

 continent |, it is not unufual for water to be frozen in January ; 

 and as fome feafons are much more fevere than others, plants 

 growing confiderably farther to the fouthward would be liable 

 to fuffer by cold in fuch feafons, if nature had not provided a 

 remedy by their manner of growing, which enables them to refift 

 the cold of fuch rigorous feafons ; and on this account many of 

 them will be found to thrive, when tranfplanted nine or ten 

 degrees further north than their native ftations. 



From anlient authors it appears that Italy formerly experienced 

 the fame degree of cold as the American continent under the 

 fame parallel of latitude does at prefent. Therefore it is highly 

 probable, that Italian plants not introduced into Italy fince that 

 time, might in a feries of years be changed from their now 

 tender to their once hardy ftate. 



But 



i iiiA 



• See Flora Lapponica & Thuillier's Flore des Environs de Paris. 



f See Hunters Evlyns Sylva, p. 552. 



I See Kirwan on the Temperature of DiiFerent Latitudes, p. 50. 



