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

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Number 197 September, 1930. 
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COTTON INSECTS 
B. R. Coad, in Charge 
Professor N. S. Scherbinovsky, principal entomologist of the 
Commissariat of Agriculture of the Union of Socialistic Soviet Republics, 
Moscow, Russia, spent September 17 and 18 at the field laboratory at 
Tallulah in studying investigations of cotten insects. He expressed 
great admiration for the magnitude of the operations carried on and the 
excellence of the equipment, and for the fine spirit of cooperation per-— 
vading the organization. 
S. Sawa, Osaka, Japan, was a visitor at the laboratory on September 
25. He expressed enthusiastic admiration of the laboratory's equipment 
and organization and the progress made in developing methods for control 
of cotton insects, especially by dusting with airplanes. 
Temporary field assistants whose appointments terminated in Sep- 
temper are J. T. Roy, R. J. Groover, EB. F. Knipling, H, L, .Tger,.s. FF, 
Davis, Geo. M. Webb, W. C. O'Dowd, E. V. Welch, H. D. Tate, K. H. Smith, 
meee soonson, M. C. Ewing, D. H. Allen, jr,, L. E- Turkerville, M. C. 
Brunson, jr., L. H. Stubblefield, H. B. Tittle, T. F. Henderson, fala 
Rainwater, and J. M. Landrua. 

INSECTS AFFECTING MAN AND ANIMALS 
F. C. Bishopp, in Charge 
F. C. Bishopp returned to Washington September 17, after an ex- 
tended trip through various western States to gather data concerning 
insects affecting cattle, and ticks and mosquitoes affecting man. 
W. G. Bruce, of the field laboratory at Fargo, N. Dak., has been 
transferred to Dallas, Tex., for the fall and winter. He reached Dallas 
September 18, and will codeine work on cattle grubs in Texas. 
Dr. W. B. Johnson, Director of the Medical and Sanitary Service 
of Lagos, Nigeria, visited the Washington office September 25, to confer 
on problems in medical and veterinary entomology in the United States. 
