Season of 1816. 219 



Jackson, Tioga, Pemu July 10, 1817. 



Sir, 



Having perused a piece in a public print, headed 

 " Agricultural," in which your society requested the ci- 

 tizens of the United States to forward information re- 

 specting the destructive insect called the Hessian fly, 

 and being desirous of diffusing all the useful know- 

 ledge which lies in my power, I take the liberty to for- 

 ward the following communication to your society, which 

 I have from good authority. 



It is most certain that the fly lays its egg in the fall or 

 autumn of the year, which continues in the plant during 

 the winter ; to prevent which, take one or two quarts of 

 oats, and put to one bushel of seed wheat, mix it tho- 

 roughly, and sow it as usual : the oats will spring up be- 

 fore the wheat, fit for the fly to lay its egg in, which be- 

 ing done, the wheat comes on afterwards, untouched by 

 the fly, and the winter kills out the oats, and of course 

 the egg must perish. If this information is of any utility, 

 I shall be amply rewarded for my little trouble. 



I am, respectfully, yours, &c. 



W. D. Bacon. 

 Mr. Roberts Vaux. 



