28O THE FRUIT GARDENER. [fi. 2, 



SECTION VI. 



On tie InfeBs which generally infefl Wall-Trees; and 

 &QW to dcjiroy them. 



THESE are, the green-fly, red-fpider, 

 caterpillar, grub, ear-wig, wood-loufe, 

 and wafp. 



The green-fly 5s eafily deftroyed by a 

 fumigation of tobacco ; but this is fome- 

 times performed with difficulty on operc 

 walls. My method is this : Sprinkle the 

 tree gently with water from the engine ; 

 then fumigate for the fpace of eight or ten 

 minutes with the bellows, when the vermin 

 will be quite fick j and afterwards give a 

 hearty wafhing with the engine ; by which 

 means they are daihed to the ground, 

 which dig over in order to bury them. 

 This operation {hould be performed in a 

 calm morning or evening ; otherwife the 

 fmoke is immediately diffipated, and, of 

 confequence, is the lefs effectual. 



The red-fpider and grub are kept under 

 with the engine in Summer, and effectually 

 deftroyed in Winter by the liquor, fee 

 Chap. III. Sett. VII.., which is to be ap- 

 plied 



