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to produce this effect. In lieu of all which, I beg 

 leave to recommend the adoption of the following 

 idea, which hath occurred to me, in the courfe of 

 writing my preceding letter dated yefterday; of 

 the certain and never-failing effects of which, in 

 the moft fatisfactory manner, I will not hefitate to 

 exprefs an abfolute confidence. 



The damage in orchards is done by infects, fo it 

 is here, though of a different fpecies ; the former 

 effected by the infect in its maggot ftate, the latter 

 by the fly : but as the fly is the original caufe in 

 both, fo the fame means are applicable in both 

 cafes; and therefore let the farmer make himfelf 

 mafler of the method I have recommended for the 

 fecurity of apple bloffom, and very little more need 

 be added here. 



If the turnip ground be fpaded and burnt, or the 

 weeds, &c. burnt without fpading, the fumigation 

 thereby may fuffice to chafe fuch of the infect 

 winged tribe from thence as are then there -, but in 

 all cafes, when the field is ploughed and ready for 

 fowing, let heaps be made at different places and 

 intervals round by the hedges and boundaries of the 

 turnip ground, and fome few fcattered through the 

 field, in the fame manner as directed for the or- 

 chards. Then, as foon as the feed is fown, let the 



heaps 



