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MONTHLY LETTER OF THE BUREAU OF ENTOMOL c¥ mbt Sah 
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COTTON INSECT INVESTIGATIONS 
B. R. Coad, in Charge 
H. C. Young and T. P. Cassidy, of the field laboratory at Tucson, 
Ariz., reached Stillwater, Okla., on May 6, and during the present season 
Will be engaged in cooperative work on control of the boll weevil in 
Oklahoma. 
C. A. Bennett, Associate Mechanical Engineer, Division of Agricul- 
tural Engineering, Bureau of Public Roads, who is cooperating with the 
field laboratory at Tallulah, La., visited a number of points in Texas 
in the early part of May to obtain data on cultivator dusters there and 
their adaptability for use, 
| Dr. W. E. Hinds, State Entomologist of Louisiana, with headquar-— 
_ ters at Baton Rouge, visited the field laboratory at Tallulah on May 21 
for conference with B. R. Coad on conditions relating to the boll weevil 
in Louisiana. 
T. P. Cassidy, at present in charge of cooperative experimental work 
on control of the boll weevil in Oklahoma, spent the last few days of May 
at Tallulah in conference with B. R. Coad on conditions in that State. 
Temporary field assistants appointed and reporting for duty at the 
Tallulah field laboratory in May were A. ©. Christopher, 0. H. Graham, 
H, D. Cook, R, W. Bunn, J. G. Shaw, ©. F. Rainwater, and R. P. Patty. 
BOOKS MISSING 
About the middle of May Volumes 1, 2, and 3 of "Index to lit- 
erature of American Economic Entomology" were supposed to have been 
sent to W. A. Thomas, in charge of the field laboratory at Chadbourn, 
N. C. These books were purchased under Requisition No. 5806, a nun- 
ber which appears on the title-page of each book. Mr. Thomas received 
instead a book intended for another laboratory, and it is believed that 
the three volumes named were misdirected to a different laboratory of 
the Bureau of Entomology. If by chance this notice comes to the atten- 
tion of anyone at whose laboratory they may have been received, it is 
requested that he send them direct to W. A. Thomas, Box 145, Chadbourn, 
N. C. 

