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TRUCK-CROP INSECT INVESTIGATIONS 
J. E. Graf, Senior Entomologist, in Charge 
D. E. Fink attended the meetings of the American Chemical Society 
at St. Louis, Mo., April 16 to 18, where he presented a paper on insecti- 
cides and discussed with entomologists present some laboratory apparatus 
and technique relative to the toxicity, to insects, of various materials. 
He returned via Washington, and there discussed plans for the future con-— 
duct of his work. 
After spending some time studying the ecological methods used by 
Walter Carter at Twin Falls, Idaho, Alfred Weed returned to Madison, 
Wis., April 12. 
About the middle of April C. I.. Bliss, of the field laboratory 
at New Orleans, La., paid the field office at Biloxi a short visit. 
S. E. Crumb left Clarksville, Tenn., April 25 for Quincy) sis 
to assist S. F. Chamberlin in fumigation experiments for the control of 
tne Cigarette beetle. 
Rodney Cecil has resumed investigations on the Mexican bean beetle, 
at Geneva, N. Y. 
J. E. Graf returned to Washington on April 27 from a three weeks' 
visit to the southern truck-crop insect laboratories. 
On April 30 N. F. Howard, Columbus, Ohio, visited Washington and 
discussed plans for the coming season's work. 
C. P. Clausen, en route to Japan for further studies of parasites 
of the Japanese beetle, spent April 4 at the Alhambra, Calif., laboratory. 
C. F. Henderson, en route to Mexico, to search for parasites of 
the sugar-beet leafhopper, visited Alhambra, Calif., on April 21. . 
J. ©. Elmore has established permanent headquarters at the Garden 
Grove, Calif., substation of the Alhambra laboratory, to continue studies 
on the pepper weevil. 
On April 21 R. E. Campbell, Alhambra, Calif., met at San Diego 
with the horticultural commissioners of the eight southern counties of 
California, to arrange for a standardized method of scouting for the pep- 
per weevil, which will be used by the horticultural inspectors in the 
several counties affected by this insect. 
Temporary appointments have been given to Paul RE. Kirker, Jie 
Toppenish, Wash., C. W. Getzendaner, Alhambra, Calif., and B. J. Landis, 
Geneva, N. Y. 
