Feb. 25, 191 J 



Relation of Grain to Hessian-Fly Injury 



525 



0000000 



T^ N 00 o 00 c< N 



8000000 

 00 -4- P) CO M 00 



roO 00 fO r^ "^ "^ 



00 \0 t^ M Ov "^ O 

 00 10 iJOvO O r^oo 



O M H M H M H 



cT cT N M cf fT fT 





•g ;3 ;3 W OJ 



WfeCJOP 



00^0000 

 tj tJ "^ "d "13 t3 13 



