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TRUCK-CROP INSECT INVESTIGATIONS 
JenbaGralyeonounalrge 
N. F. Howard, Columbus, Ohio, attended the spring meeting of 
tes Packers Association at Baltimore, Md., on April 3 and 4, 
where he discussed the control of the Mexican bean beetle along the At— 
lantic seaboard. He visited Washington en route, on his return to Colun— 
oO 
Dr. B. A. Porter, of the Washington office of Deciduous Fruit In- 
sect Investigations, visited the field laboratory at Columbus, Ohio, on 
April 6. 
J. R. Douglass, in charge of the field laboratory at Estancia, N. 
M., who has spent two months at the field laboratory at Columbus, Ohio, 
visited Washington April 9 to 13, and consulted with bureau officials 
regarding his work in New Mexico. Mr. Douglass is preparing a manu- 
script on the effects of rainfall and temperature on the winter survival 
and spring emergence of the Mexican bean beetle at various altitudes and 
in different life zones. En route to Estancia he visited the field lab— 
oratory for the study of cotton insects at Tallulah, La. 
R, E. Campbell, in charge of the field laboratory at Alhambra, 
Calif., reported that during the period April 8 to 15 G. A. Deanjehiee 
Bishopp, D. C. Parman, W. S. Abbott, W. M. Davidson, L.. J. Bottamers 
and D. N. Borodin visited the laboratory. 
Dr. L. O. Howard visited the field laboratory at Madison, Wis., 
GOPADT iLO. 
On April 19 C. I. Bliss, of the field laboratory at New Orleans, 
La., and BE. QO. Essig, of the State experiment station at Berkeley, Calif., 
were in Alhambra, Calif., and gave talks at the regular meeting of the 
Entomological Club of Southern California. 
. On April 20 R. E. Campbell, Alhambra, Calif., inspected lettuce 
fields in the Salinas Valley, where a serious aphid infestation was 
found; he also conferred with 0. H. Lovell at San Jose, Calif., regarding 
the situation as to the vegetable weevil at that place. 
Rodney Cecil returned to the field laboratory at Geneva, N. Y., on 
April 22, where he will resume his studies on bean insects. He spent 
last winter at the field laboratory at Columbus, Ohio. 
Dr. Dayton Stoner, whose temporary appointment as field assis— 
tant at the field laboratory at Sanford, Fla., expired on April 14, vis-— 
ited Washington April 22 to 27, to confer with bureau officials re= 
garding his past season's work on predators, particularly birds, of the 
celery leaf-tyer. 
