158 
FOURTH SESSION—AUGUST 16. 
The association met in room 24 and was called to order by the pres- 
ident at 9 a. m. 
Mr. Summers moved that Mr. G. C. Davis be elected a member of 
the association. It was carried. 
As chairman of the committee on the president’s address Mr. Osborn 
reported as follows: 
Your committee, to whom were referred the recommendations in the president’s 
address, would report that they favor the adoption of such recommendations, and 
recommend the appointment of a standing committee to present a detailed plan for 
codperative work among members, and to make recommendations concerning legis- 
ation. 
HERBERT OSBORN, Chairman. 
JOHN B. SMITH. 
H. GARMAN. 
The report was adopted, and Messrs. Osborn, Smith, and Garman 
were appointed as such committee. 
The president at this point called Second Vice-president Smith to 
the chair, and the discussion of Mr. Webster’s paper on grain insects 
was resumed. 
Mr. Forbes remarked that it can not be inferred that the Hessian Fly 
is single brooded in a region where no winter grain is raised on the 
evidence of the absence of winter grain alone, since volunteer spring 
grain may give opportunity for the breeding of a second generation, 
and in this connection instanced an observation of his own in the spring- 
wheat region of northern linois where the fly is admittedly double- 
brooded, but where he found it infesting barley in spring. 
In reply to questions Mr. Webster stated that a difference in the 
relative injury by Hessian Fly observed by him in two fields was due to. 
the better condition in which the ground was kept in the case of one of 
them, so that wheat sown late enough to escape the fall attack grew. 
rapidly and went into the winter in prime condition, while in the other 
field the wheat, if early sown, was infested, and, if sown late, was win. 
ter killed. 
Mr. Webster stated in this connection that the fall brood of the 
fly scatters everywhere for oviposition, while the spring brood does not 
range widely, but is most likely to lay again on other plants (suckers, 
etc.) in the same field. 
Mr. Riley asked Mr. Webster to give some account of the actual — 
experiments and observations which had led him to make the state- 
ments in reference to the Apple Aphis (Aphis mali). He had for a 
number of years known that this species had a summer existence on 
various grasses, and had been very anxious to have Mr. Webster, while 
an agent of the Division of Entomology, follow the full annual cycle of — 
development so far as the wheat plant was concerned. 
