270 A TREATISE OF 



of thefe infefts, as alfo their eggs conceal-* 

 ed in thefe places; and by keeping the 

 branches thin and open, they are more 

 eafily fhaken off by the winds* 



Mr. Bradley compares thefe infects to 

 filk-worms, which drop from mulberry 

 trees in Italy by thunder > but I don't ima- 

 gine that the caufe of their falling is owing 

 to the thunder only, for I fuppofe there 

 generally are fliowers of rain defcending 

 at the fame time, which beats part of them 

 down. 



He further fays, that difcharging of great 

 guns near fruit-trees, will have the fame 

 efFeft as thunder, in caufmg the caterpillars 

 to drop from them : but this fcheme, I 

 prefume, will not often be put in execution, 

 as few have it in their power, not being 

 provided with guns ; neither is there ne- 

 cefRty for being at this trouble, fuppofe it 

 would produce the defigned effecT:; for 

 watering is lefs expenfive, and I think is as 

 good a remedy againft this evil. As moft 

 noblemen have at their feats engines for 

 cxtinguiflnng fire, which are very proper 

 inftruments for watering orchards, or fuch 

 trees as cannpt be reached vvdth a brulh or 



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