MONTHLY LETTER OF THE BUREAU OF ENTOMOLOGY 
UNITED STATES DEPARTMENT OF AGRICULTURE 







umber 134 June, 1925 
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TRUCK-CROP INSECT INVESTIGATIONS ry I g Fo a Li y | 
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J, BE. Graf, Entomologist, in Charge “© iit ‘fk vie 
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. N. F. Howard recently visited Woerineton en route to Cone ‘N. Y., also 
stopping off at Harrisburg, Pa., where a conference was held with officialos | 
of the State Bureau of Plant Industry regarding work in Pennsylvania against 
the Mexican bean beetle. He then proceeded to the Bureau's substation at 
Geneva, where the investigations being conducted by Mr. Cecil were reviewed, and 
plans were discussed for cooperation with Professor Parrott, of the Agricultural 
Experiment Station. He next visited the Bureau's substation at Columbus, 
‘Ohio, where a conference was held with Dr. DeLong and others interested in 
_° Mexican bean beetle investigations. 
W. H. White recently visited Madison, Wis., to observe the operation of 
‘the aphidozer on peas. He also looked over the work being conducted by Mr. Davis 
at Racine, Wis., under the direction of Mr. Dudley, on the control of the 
enion maggot. Returning, he visited Akron, Ohio, to observe the reported injury 
‘by thrips to cucumbers in certain greenhouses in that section. . 
Messrs. Campbell, Elmore and Dunavan attended the meetings of the 
Pacific Slope Branch of the American Association of Economic Entomologists nets 
at Portland, Ore., the middle of June. 
Dr. R. N. Chapman, Associate Professor of Entomology at the University 
of Minnesota, and Collaborator. of this division, recently visited the laboratory 
at Toppenish, Wash., and discussed the sugar-beet leafhopper work with Mr. Carter. 
C. F. Stahl, formerly of this division, visited this office on his way to 
Riverside, Calif., to spend a short vacation before returning to.Baragua, 
Cuba, where he is now connected with the Tropical Plant Research Foundation . 
Dr. J. H. Montgomery, of the State Plant Board of Florida, recently 
‘visited this office and discussed the eradication work on the sweet-potato 
weevil which is being conducted in cooperation with that Board. At this time 
‘also the celery leaf-tyer problem in Florida, on which the Bureau will cooperate 
with the State Plant Board, was discussed in a preliminary way. 
q J. R. Douglas visited points in southern Colorado to take notes on the 
time of the emergence of the Mexican bean beetle from hibernation in that area. 
The following men have been given temporary appointments as field assistants: 
#—A. L. Weatherby, Birmingham, Ala., D. M. DeLong, Columbus, Ohio, C, H. Martin, 
Estancia, N. M., C. H. Griffith, Toppenish, Wash., and H. Beerman, Riverton, N. J. 

