84 CORN AND GRASS. 



the eggs of the flies of the autumn brood) is stated to " lie at 

 the sheathing-base of the leaves of the young plant just above 

 the roots, at or near the surface" ; and *' before assuming the 

 * flax-seed ' state, rests between the leaves and the stalk."* 



Plant of young Wheat, showing position of Hessian Fly maggot at "a " 

 (after Prof. Webster). 



" The plant itself has not tillered, the leaves are of a 

 darker colour than those of a healthy plant, and proportionally 

 broader. The central spindle-shaped leaf is missing, and the 

 whole plant is only a bunch of rank-growing leaves. In any 

 case the darker colour of the leaf, and the absence of the 

 central leaf, together with the bunchy appearance of the part 

 affected, will readily distinguish a fly-infected plant from one 

 not injured. The yellow colour of some leaves is seldom 

 observed, at this season of the year, on fly-infested plants." 

 — From circular by Prof. F. M. Webster, of Lafayette, Ind., 

 U. S. A., on Hessian Fly maggot-attack to young Wheat. 



Prevention and Remedies. — Late sowing of autumn Wheat. 

 This is a point which great stress is laid on in American 



* See Bulletin 4 of U.S.A. Entomological Commission. 



