BUREAU OF ENTOMOLOGY AND PLANT QUARANTINE 7 
K. P. Ewing, for 32 years a research entomologist with the Division 
of Cotton Insect Investigations, was designated on September 3, 1952, 
as coordinator of the expanded cooperative pink bollworm research 
programs. Subsequently Mr. Ewing was appointed leader of the Di- 
vision of Insects Affecting Cotton and Other Fiber Plants, succeeding 
K. W. Harned, who had headed the Division since 1931. C. F. Rain- 
water was designated as assistant division leader. Mr. Harned will 
continue as a staff assistant to the Bureau Chief and as a consultant on 
cotton insects and their control. T. P. Cassidy has been assigned 
responsibility for research on insects affecting rubber and fiber plants 
other than cotton. 
David G. Hall, acting in charge of the Division of Information, 
became head of that division October 23, 1952. 
The former Division of Grasshopper Control was reestablished as 
a project under the general direction of the Regional Director at 
Minneapolis, Minn., effective July 28, 1952. James R. Dutton, for- 
merly assistant division leader, was designated as project leader, and 
Arling Gardner as assistant project leader. Headquarters for this 
activity will continue at Denver, Colo. 
Historical records have been consulted to obtain interesting ento- 
mological information that may be presented in 1954 during the cen- 
tenary celebration of professional entomology. Elaborate plans for 
recognizing this commemoration have been made by committees ap- 
pointed for that purpose in the Bureau, profession, and industry. 
The Chief of the Bureau had an opportunity briefly to explain some 
of the Bureau's outstanding accomplishments during the visit of Presi- 
dent Eisenhower to the Agricultural Research Center at Beltsville on 
May 26, 1953. 
STORED-PRODUCT INSECTS 
Formula EQ— 53 To Protect Washable Woolens Announced 
A formula for a nonionic emulsifiable DDT concentrate which can 
be used in the home and in commercial laundries to mothproof wash- 
able woolens was released to insecticide manufacturers in December 
1952 so that the preparation would be available on the retail market in 
1953. The emulsion is added direct to wash or rinse water at the rate 
of 1 tablespoonf ul per pound of woolens, and the resulting deposit in 
the cloth will protect it from insect damage in storage for a year or 
more. Extensive research had revealed that from very dilute non- 
ionic emulsions woolen fabrics pick up considerably more DDT than 
would be expected. It was also found that the amount of pickup was 
determined by the proportion of DDT to the wool, and was not regu- 
lated by the concentration of DDT in the water bath. 
Cool Storage Effective Against the Cigarette Beetle 
All stages of the cigarette beetle were killed by long exposure to 
storage conditions of 47° to 48° F. and 68 percent relative humidity. 
Eggs were killed within 13 days. A few larvae required 88 days but 
most were dead after 14 days. One adult emerged from a pupa held 
109 days. Very few adults survived 60 days' exposure although a few 
lived up to 89 days. Cool storage is used by some tobacco manuf ac- 
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