LIBRARY 
 STATE PLANT BOARD 
 
 August 1949 • ET-274 
 
 United States Department of Agriculture 
 
 Agricultural Research Administration 
 
 Bureau of Entomology and Plant Quarantine 
 
 LIST OF 
 ENTOMOLOGICAL TECHNIQUE (ET-SERIES) PUBLICATIONS 234 TO 270 
 
 Compiled by Division of Insect Survey and Information 
 
 This list includes the ET publications that were issued from 
 January 1947 through June 1949. Four 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, and 151 to 233 in September 1946. 
 
 ET-234. A Small Portable Mist Blower for Applying Concentrated 
 Spray. S. F. Potts and R. A. Spencer. March 1947. 
 
 ET-235. Inexpensive Replacement Elements for Laboratory Hot Plates. 
 _ Harold W. Rusk. March 1947. 
 
 ET-236. The Application of Soil Fumigants With a Plow. William C. 
 Cook and Merton C. Lane. March 1947. 
 
 ET-237. Insecticide Duster. R. D. Chisholm, L. Koblitsky, W. C. Fest, 
 and E. D. Burgess. April 1947. 
 
 ET-238. An Exhaust Aerosol Generator for 1-1/2 Horsepower Motors. 
 A. H. Yeomans and W. G. Bodenstein. May 1947. 
 
 ET-239. Swinging- Shutter Apparatus for Measuring Small Dosages of 
 Insecticidal Aerosol. E. R. McGovran and J. H. Fales. 
 June 1947. 
 
 ET-240. A System for Storing Organic Chemicals. S. I. Gertler and 
 Milton S. Schechter. August 1947. 
 
 ET-241. Collecting and Weighing Tube for Insecticidal Aerosols. E. R. 
 McGovran and J. R. Fales. September 1947. 
 
 ET-242. A Trap Unit for Insect Emergence Cages. C. W. Getzendaner 
 and E. W. Davis. September 1947. 
 
-2- 
 
 ET-243. A Dual-Purpose Extraction Rack. H.D.Mann. September 1947. 
 
 ET-244. A Motorized Aspirator. W. B. C art wright and Philip Luginbill. 
 September 1947. 
 
 ET-245. A Laboratory Method for Filling Aerosol Containers. R. A. 
 
 Fulton, F. D. Berlin, and R. S. Bochert, Jr. October 1947. 
 
 ET-246. A Glass Container for Use in Studying Aerosol Solutions. 
 R. A. Fulton and F. D. Berlin. October 1947. 
 
 ET-247. Improved Techniques for Mass Rearing of the Cigarette 
 
 Beetle and the Tobacco Moth. Clarence O. Bare, Joseph N. 
 Tenhet, and Ross W. Brubaker. November 1947. 
 
 ET-248. Lamps for Use With the Binocular Microscope. Perez Simmons. 
 November 1947. 
 
 ET-249. Laboratory Duster. R. D. Chisholm and W. C. Fest. 
 January 1948. 
 
 ET-250. A Manual for the Artificial Insemination of Queen Bees. Otto 
 Mackensen and W. C. Roberts. February 1948. 
 
 ET-251. An Improved Aerosol Nozzle for Use on Engine Exhausts. 
 A. H. Yeomans. March 1948. 
 
 ET-252. Bulk Rearing of Scolytus multistriatus Marsh, and 
 
 Hylurgopinus rufipes Eich. Charles L. Griswold. 
 March 1948. 
 
 ET-253. Installation of Windows in Panels of a Sedan Delivery Truck. 
 O. E. Berndt. April 1948. 
 
 ET-254. Refrigerator- Car Dusters. R. D. Chisholm, V. A. Johnson, 
 P. S. Mock, and C. V. Marshall. April 1948. 
 
 ET-255. Rearing the Mexican Bean Beetle Indoors. Neale F. Howard. 
 May 1948. 
 
 ET-256. Staining Methods for Detecting Weevil Infestation in Grain. 
 J. C. Frankenfeld. July 1948. 
 
 ET-257. A Method for the Determination of Freon-Insoluble Matter in 
 Pyrethrum Extracts. A. C. Hazen and Robert A. Fulton. 
 July 1948. 
 
ET-258. Field-Model Aerosol Machines. A. H. Yeomans. July 1948. 
 
 ET-259. A Small Field Duster. George V. Johnson. July 1948. 
 
 ET-260. A Concentrate Sprayer for Experimental Use. George V. 
 Johnson. August 1948. 
 
 ET-261. An Apparatus To Facilitate DDT Extraction From Soil 
 
 Samples. Irving Keiser and C. F. Henderson. August 1948. 
 
 ET-262. Equipment for Dispersing Insecticides From Aircraft. 
 Frank S. Faulkner and C. C. Deonier. October 1948. 
 
 ET-263. Embedding Beetles in Plastic. J. C. Silver. November 1948. 
 
 ET-264. A Leaf Punch for Sampling Insecticide Residues on Foliage. 
 Jack E. Fahey and Harold W. Rusk. March 1949. 
 
 ET-265. An Apparatus for Rapidly Inspecting Both Sides of Small 
 Objects. Gailen D. White. March 1949. 
 
 ET-266. A Method for Testing Residual Deposits. P. G. Piquett, R. H. 
 Nelson, and E. R. McGovran. May 1949. 
 
 ET-267. Directions for Determining Particle Size of Aerosols and Fine 
 Sprays. A. H. Yeomans. May 1949. 
 
 ET-268. A Mechanical Extraction Apparatus. H.D.Mann. June 1949. 
 
 ET-269. Automatic Insecticide-Dispensing Equipment for Installation 
 in Aircraft. A. H. Yeomans, W. N. Sullivan, Jr., and 
 R. A. Fulton. June 1949. 
 
 ET-270. Spray Nozzle for a Portable Mist Blower. R. D. Chisholm, 
 W. C. Fest, and V. A. Johnson. June 1949. 
 
UNIVERSITY OF FLORIDA 
 
 3 1262 09242 9041