

Wheat ; Hessian Fly, &c. 235 



fly, are most probably deceived by the ichneumon, bred 

 in the grub. 



Few of the members entirely escaped the fly. But 

 they knew so well, that it is idle to sow wheat without 

 manure and good farming, that in general the fly has done 

 them little injury, save where the grain was too late sown, 

 i. e. in the first or second week in November. Such 

 wheat, in two instances, having grown little till spring, 

 was destroyed by the spring brood of the fly. Others 

 generally sowed the first week in October ; and yet so 

 variant are facts, owing to accidental circumstances, that 

 a farmer had a great crop of wheat on potato ground, 

 sowed the 22d of November, not in the least injured by 

 the fly. 



I have thus detailed a short history of facts, as reported 

 by practical men, because it will not only be positively 

 useful; but it will afford a specimen of the advantages 

 which would accrue to the general interests of husband- 

 men, if agricultural societies, in various parts of our 

 country, would communicate with each other, on sub- 

 jects interesting to farmers ; and to every citizen, equally 

 concerned with them, in this important branch of the pub- 

 lic prosperity. 



I am truly yours, 



Richard Peters. 

 Roberts Vaux, Esq^. 



A member of the Society states, that when the full grown grub 

 is in vigour, lime will not destroy it. T have confined them in 

 slacked lime, and found them very uneasy ; but several hours' 

 abidance in it has not materially injured them. The experience 

 of others has been different — fiat experiment um. Possibly lime 

 is most efficacious when the grubs are in the egg state : or in early 

 stages of their growth. ft. P. 



