4 
TRUCK-CROP INSECT INVESTIGATIONS 
J. E. Graf, Senior Entomologist, in Charge 
On August 9 and 10 J. E, Graf visited the Clarksville, Tenn., Tobacco 
Insect Laboratory, a project which was recently transferred to this division. 
He conferred there with A. C, Morgan, Associate Entomologist in charge of 
the laboratory, and others. 
On August 11 Mr. Graf made a brief stop at Columbus, Ohio, where plans 
for future work were discussed with N. F, Howard, in charge of Mexican bean 
beetle investigations at that place, and J. E, Dudley, Jr., in charge of 
pea aphis investigations in Wisconsin. 
J. EH, Dudley, Jr., Associate Entomologist, Madison, Wis., visited 
Geneva, N. Y., early in ‘August, where he conferred with Messrs, Parrott and 
Cecil regarding the pea aphis, On his return trip he stopped at Columbus, 
Ohio, to confer with Messrs, Graf and Howard, then went to Columbus, Wis,, 
where investigations against the pea aphis are under way. 
About August 23 Rodney Cecil, Junior Entomologist, Geneva, N. Y., 
made a scouting trip for the Mexican bean beetle in the southwestern portion 
of New York State. | 
N. F. Howard and D. M. DeLong, of the Columbus, Ohio, laboratory, 
made an inspection trip in the last week of August into Michigan to ascertain 
if the Mexican bean beetle had crossed the Michigan line. They report that 
as yet the beetle has not been discovered in that State, though three addi- 
tional counties in north-central Ohio have recently been added to the infested 
area, 
On August 18 W, A, Thomas, Chadbourn, N. C., visited the Jekyl Island 
Golf Club, at Brunswick, Ga., to check up the work against the mole cricket, 
and reports excellent results from the poison-bait tests. 
H. H, Severin, Collaborator, Berkeley, Calif., in company with his 
brother, H. C. Severin, Brookings, S. D., also a collaborator of the Depart- 
ment, made a scouting trip in the middle of August across the central and 
northern parts of South Dakota. He reports that they were unable to find 
the sugar-beet leafhopper, although they observed an affection of beets 
which they believed was due to curly-top. 
Eine. L. W. Brannon, in charge of the Mexican bean beetle substation at 
Birminghan, Ala., visited Washington the last week of August. 
M. C. Lane, Toppenish, Wash,, recently returned from Walla Walla, 
Wash,, where he organized the substation and work at that place under the 
direction of M. W. Stone, Field Assistant. The wireworms in Walla Walla 
Valley did considerable damage to the onion crop this year, reducing the 
marketable onions in some fields 25 per cent, and no field entirely escaped. 
