JF R U I T^T R E E S. 273 



A few days after the honey-dev/ appears 



you may difcover fmall infects on the un-^ 



der fide of the leaves that are fhrivel'd al- 



moft without motion ; yet the heat of one 



fine day will make them vifibly increafe 



both in bulk and ftrength, and likewife 



more in number. Though at firft they 



have no appearance of wings, yet if the 



weather continues dry and warm for ten 



or twelve days, they will be furnifhed with 



wings, whereby they foon after take their 



flight ', but there are many fuccefTions of 



thefe infecls, and honey-dews in funimer, 



which prevents the thriving of many 



branches and leaves of fruit-trees. 



It is imagined by fome, that this clam- 

 my matter is perfpired by the trees, and 

 that the infe£ls come thither only to feed 

 upon it ; but by the former obfervations it 

 plainly appears to the contrary ; for they 

 are aimoft void of motion when firft per- 

 ceived on the trees, and therefore cannot be 

 fuppofed to come thither for that purpofe, 

 but feem rather as though thty bred where 

 there are firft difcovered, becaufe of their 

 growing much during their continuance 

 there, and being incapable, at tlieir firfl 



T appear* 



