FRUIT-TREES. 271 



fmall hand-engine, if orchard-trees are 

 watered all over v/ith thefe engines two or 

 three times a week, it will deftroy many 

 of the caterpillars ; and the water falling 

 on the ground will add new vigour to the 

 trees, and increafe the motion of their fap, 

 which will caufe greater plenty of fruit. 



This fliould be done in the heat of the 

 day, for then the caterpillars hang the 

 loofeft upon the trees, and are therefore 

 more eafily beat down, and the water fliould 

 be mixt with fait. This work is not only 

 neceflary when the trees are in bloflbm, but 

 alfo before and after; for, in the beginning 

 of March, I have feen the caterpillars eat 

 the blofTom buds before they have been un- 

 folded, and likewife the fruit, as before ob- 

 ferved : but where engines are not to be 

 had, I have known great fervice done by 

 fmoaks from damaged hay fet on fire in the 

 evening. 



CHAP, 



