

Number 178 
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SS a ee a ES mR SO 
February, 1929 _ 
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INSECTS AFFECTING MAN AND ANIMALS 

F. C. Bishopp, in Charge 
The principal activities of this division in the field for the month 
of February have been concerned with investigations of cattle grubs. R. W. 
Wells left Washington February 8 for Galesburg, Ill1., to make observations 
near there on seasonal abundance and stages of development of the cattle 
grubs. 
W. G. Bruce, assigned to the Fargo, N. D., field laboratory, ar- 
rived there February 15 and took up his duties. The district, in the Red 
River Valley of the North, where this laboratory is located is free from 
cattle grubs, although grubby cattle have on various occasions been shipped 
in. Mr. Bruce's problem is to determine what the factors are which apparent— 
ly prevent the establishment of Hypoderma there, and his work is being 
done in cooperation with the North Dakota Agricultural College. Prof. 
J. A. Munro, of the Department of Entomology, Prof. J. E. Chapman, Depart- 
ment of Agronomy, Dr. A. F. Schalk, Department of Veterinary Science, and 
Prof. J. H. Shepperd, Department of Animal Husbandry, and others, of the 
staff of the North Dakota Agricultural Experiment Station, have shown great 
interest in the problem. 
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H. S. Peters left Dallas, Tex., February 3 by automobile for Ter— 
re Haute, Ind., and arrived there February 7, after making observations 
on cattle grubs en route. After making stops in Columbus, Ohio, and Pitts-— 
buren, Pa., he returned on February 17 to the field laboratory at Belts— 
ville, Md., to which he is now assigned. 
F. C. Bishopp left Washington February 8 to make observations at 
various points on cattle grubs and to supervise the work of assistants in 
the field. His first stop was Terre Haute, Ind.; from there he drove over— 
land to Galesburg, Ill., stopping en route at Urbana on February 11 for a 
conference with Doctors Flint, Metcalf, and Graham, of the staff of the 
Tilinois Agricultural Experiment Station. On this date, at the request of 
Dr. Graham, he gave a talk before the Illinois Veterinary Conference, which 
was in session. Other points visited by him were St. Paul, Minn., Fargo, 
N. D., and Lamar, Colo. At the place last named conferences were held with 
officials of the Bureau of Animal Industry who are conducting there an 
experiment in control of the cattle grub. Mr. Bishopp returned to Washing- 
ton February 22. 
Dr. L. O. Howard addressed the New Jersey Mosquito Extermination 
Association at Atlantic City, N. J., February 135, presenting his annual 
summary of world-wide mosquito work. 
