-7- 
EQUIPMENT AND METHODS— Continued 
(58) Getzendaner, C. W. , and Davie, E. W. 
A Trap Unit for Insect Emergence Cages. U. S. Bur. Ent. and 
Plant Quar. ET-2A2, 3 PP»» illus. September, processed;/ 
(59) Husman, C. N., Longcoy, 0. M«, and Hensley, H. S. 
Equipment for the Dispersal of DDT Insecticides by Means of 
Aircraft. U. S. Bur. Ent. and Plant Quar. ET-228, 17 pp., 
illus. May. ^Processed^/ 
(60) Latta, Randall, and Goodhue, L. D. 
Aerosols for Insects. U. S. Dept. Agr. learbook (Science in 
Farming) 1943-47* 623-627. 
(61) Mann, H. D. 
A Dual-Purpose Extraction Rack. U. S. Bur. Ent. and Plant 
Quar. ET-243> A pp., illus. September. ^Processed^j/ 
(62) MoGovran, E. R. , and Fales, J. H. 
Collecting and Weighing Tube for Insecticidal Aerosols. D. S. 
Bur. Ent. and Plant Quar. ET-241, 5 pp., illus. September. 
^Processedj/ 
(63) __ and Fales, J. H. 
Insecticidal Aerosol Progress. Soap and Sanit. Chem. 23 (2)t 
12A-125, 169. February. 
(6A) mm __ and Fales, J. H. 
Swinging-Shutter Apparatus for Measuring Small Dosages of 
Insecticidal Aerosol. U, S. Bur. Ent. and Plant Quar. 
ET-239, 7 pp., illus. June, ^rocessed^/ 
(65) Potts, S. F. 
Mew Method to Apply Concentrated Spray. South. Planter 108 
(2)i 22. February. 
(66) Potts, S. F. , and Spencer, R. A.* 
A Small Portable Mist Blower for Applying Concentrated Spray. 
U. S. Bur. Ent. and Plant Quar. ET-234-, 2 pp., illus. March, 
^rocessedj/ 
(67) Rusk, Harold W. 
Inexpensive Replacement Elements for Laboratory Hot Plates. 
U. S. Bur. Ent. and Plant Quar. ET-235, 3 pp., illus. March, 
^rocessedjj 
(68) Siegler, E. H. 
Leaf-Disk Technique for Laboratory Use of Acaricides. 
Jour. Econ. Ent. 40 (2): 280. April. 
(69) Simmons, Perez. 
Lamps for Use With the Binocular Microscope. U. S. Bur. Ent. 
and Plant Quar. ET-248, 2 pp., illus. November. ^Processed^ 
