276 A TREATISE OF 



their branches fpungy) than any thing elfc 

 that naturally happens to them 3 for it re- 

 tards the motion of the fap, at the extre- 

 mity of the branches, which prevents the 

 fruit below from coming to any tolerable 

 perfeftion, and damages the young branches 

 to fuch a degree, that they are neve, ::fter 

 capable of bearing good fruit. 



Befides, many trees are intirely killed 

 thereby, if proper methods are not ufed to 

 prevent it. 



Tho' different kinds of fmother-flies, or 

 thofe of different colours, are found upon 

 different forts of trees, yet as they all either 

 breed from, or feed upon the honey-dew, 

 it therefore appears that all trees require 

 the fame care and management, topreferve 

 them from thefe evils, for no tree prolpers 

 well when either the honey-dew or fmother- 

 flies are on the extremities of its brandies. 



But both are to be k^n upon fome trees 

 in dry wxather, and when there are not 

 much dews in the night for the trees to im- 

 bibe, whereby they become lefs vigorous in 

 their growth, and the tops of the branches 

 become dry ; whereby this glutinous matter 

 adheres more clofeiy, and the motion of 



the 



I 



