January 1951 ET-2' 2
United States Department of Agriculture
Agricultural Research Administration
Bureau of Entomology and Plant Quarantine
ENTOMOLOGICAL TECHNIQUE (ET-SERIES) PUBLICATIONS 271 to 291
Compiled by Division of Insect Survey and Information
This list includes the ET publications that were issued from July 1949
through December 1950. Five previous lists for this series have been
issued: 1 to 50 in October 1935, 51 to 100 in December 1937, 101 to 150
in September 1939, 151 to 233 in September 1946, and 234 to 270 in
A Simplified Procedure for Cleaning and Filling Aerosol
Cylinders in the Laboratory. R. A. Fulton. July 1949.
A Photographic Method for Recording Size of Spray Drops.
J. M. Davis. July 1949.
An Improved Apparatus for Observing Aerosol Solutions and
Determining Freon-Insoluble Matter in Pyrethrumn Extract.
R. A. Fulton. July 1949.
ET-274. List of Entomological Technique (ET-Series) Publications
234-270. Division of Insect Survey and Information.
Short-Cut Procedure for Error Estimate in Laboratory Studies
of Synergism in Insecticides. F. M. Wadley. August 1949.
Fertilizer Spreader Modified to Apply Insecticidal Dusts.
W. C. Fest and A. R. Whitcraft. September 1949.
A Collapsible Cage for Field Use. R. L. Wallis.
An Improved Trap for Collecting Aphids. E. W. Davis and
B. J. Landis. December 1949.
A Device for Spraying Bean Seed in the Row While Planting.
John C. Elmore. January 1950.
UNIVERSITY OF FLORIDA
-2 II i11111BD I 1 1B 1111~ I D 1 111 1B 111HI I
3 1262 09242 9363
ET-280. A Sprayer for Dispensing Small Measured Quantities of Liquid.
Orin A. Hills and Edgar A. Taylor. January 1950.
ET-281. Determining the Catch of Cigarette Beetles in Suction-Light
Traps in Cigar Factories or Cigar-Tobacco Storages.
Joseph N. Tenhet and C. 0. Bare. February 1950.
ET-282. Directions for Applying Windborne Aerosols for Insect Control
Out of Doors. A. H. Yeomans. May 1950.
ET-283. Tumbling Equipment for Recovery of Insecticide Residues.
C. H. Batchelder and 0. E. Berndt. May 1950.
ET-284. Gravity-Flow Equipment for Dispersing Insecticides from
Aircraft. Frank S. Faulkner, C. C. Deonier, and A. N.
Davis. June 1950.
ET-285. A Rapid Vat-Side Test for Assaying Toxaphene in Cattle Dips.
C. V. Bowen. June 1950.
ET-286. Propeller-Blower Applicator for Fumigation with Hydrocyanic
Acid. Harold R. Yust. June 1950.
ET-287. Construction of a Simple Air Flowmeter. F. A. Fulton and
Frank S. Phinney. July 1950.
ET-288. A Device for Transferring Insects from Holding Cages to
Test Containers. Robert A. Hoffman. July 1950.
ET-289. A Portable Field Cage. Marion W. Pedersen, Frank E. Todd,
and Frank V. Lieberman. August 1950.
ET-290. An Improved Syi inge Hydrometer. C. V. Bowen.
ET-291. Thresher and Separator for Red Clover Seed Samples.
A. W. Woodrow and B. A. App. October 1950.