$4 . March 1749. 



furnifhed with pretty large leaves, and that 

 by this moffc of the leaves were killed. 

 But the leaves thus killed have always been 

 fupplied by fre/h ones. It is remarkable 

 that in fuch cold nights the froft ads 

 chiefly upon the more delicate trees, and 

 in fuch a manner, that all the leaves, to the 

 height of feven and even of ten feet from 

 the ground, were killed by the froft, and 

 all the top remained unhurt. Several old 

 Swedes and Englijhmen aftured me they had 

 made this obfervation, and the attentive 

 engineer, Mr. Lewis Evans, has fhewn it 

 me among his notes. Such a cold night 

 happened here, in the year 1746, in the 

 night between the 14th and 15th of June, 

 new ftyle, attended with the fame effecl, 

 as appears from Mr. Evans's obfervations, 

 The trees which were then in bloffom, had 

 loft both their leaves and their flowers in 

 thefe parts which were neareft the ground ; 

 fometime after they got frefh leaves, but 

 no new flowers. Further it is obfervable, 

 that the cold nights which happen in 

 fpring and fummer never do any hurt to 

 high grounds, damaging only the low and 

 fnoift ones. They are like wife very per- 

 ceptible in fuch places where limeftone is 

 to be met with, and though all the other 

 parts of the country be not vifited by fuch 



cold 



