735 
“TRUCK CROP INSECT INVESTIGATIONS 
de Be Graf, Bntomp Logi st, in Che Tge 
Corwin F. Stahl, who has - been connected with this division for 13 
years, resigned November 26, 1924, to accept | position with the Tropical 
Research Foundation in Cuba, where he will investi gate the transmission of 
sugar-cane diseases by insects. During the time that Mr. Stahl was con- 
nected with the. Buréan of Entomd logy. he was engaged ona ‘study of the 
“sugar-beet leafhopper and its relation to’ the curly-leaf disease of sugar 
beets. This work was conducted at Jerome, Idaho, and at Spreckels and 
Riverside, Calif. During much of this time Mr. Stahl was cooperating with 
the Bureau of Plant Industry. Mr. Stahl has been the joint author of 
several publications which have added materially to our knowledge of the 
biology and habits of. the’ sugar-beet.leafhopper, as. well as of its rela- 
tionship to the transmission of curly-leaf or curly-top. These have ap- 
peared in the Journal of Agricultural. Research and in.Fhytopathology. Mr. 
Stahl's past training and experience will undoubtedly make him well quali- 
fied to undertake his present work. He has been appointed.a.collaborator 
in order that he may keep this division informed regarding incidental ob- 
servations in Cuba in connection with the occurrence of. vegetable pests. 
B. L. Boyden, Associate Entomologist in charge of the sweet-potato 
weevil work in Florida, reports that.the fall inspection in the Baker- 
Charlton area has just been completed. This district comprises the earli- 
est test area in sweet-potato weevil eradication, and the results there to 
date have been especially promising. During the season just closed no 
stages of the sweet-potato weevil were found on any of the farms, though 
on one place suspicious feeding marks were noted. 
K. L. Cockerham, Associate Entomologist in charge of the sweet- 
potato weevil work in Mississippi, reports that on the, nights of November 
24 and 25 the temperature reached 32 degrees F. in southern Mississippi, 
and killed sweet-potato vines. .This cool wave will undoubtedly hasten the 
sweet-potato harvest, and by.killing many parts of the plants above the 
ground should aid materially in the campaign under way in that State for 
the eradication of the FESS teaue tate weevil. 
R. E:. Campbell, Ass aie Entomologist, Alhambra, Calif., attended 
a. conference of California officials held at Sacramento, where plans were 
discussed relative to the possibility.of a quarantine against the Colorado 
potato beetle. 
W. A. Pronae wertoe Hntomblogtst Beare N..C., visited Charles- 
ton, S. C., to plan some experimental work on the control of Acolus dor- 
salis Sav, the wireworm injurious to: spinach in that vicinity. In this 
experiment Mir. Tagmes is working with both repellents and soil fumigants. 
This division is niesning a contribution to the sages losieal exhibit 
arranged for the Christmas meetings of the American Association of Economic 
