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fields, orchards, and vineyards. In 15 seoonds to 2 \ mixutes an acre 
is blanketed with an odorless, impalpable but opaque mist, harmless to 
man and all other warm-blooded animals, that destroys every injurious 
inseot. A complete kill of oitrus thrips, grape leafhoppers, flea 
beetles, oabbage loopers, and three or four other troublesome pests 
can be reported without reservation. Cattle and barns are freed of 
flies by this very fine fog. The oost is trifling and the applica- 
tion incredibly easy and swift. The fog is made by feeding DDT in 
oil solution into a current of steam. The maohine is made by the 
Todd Shipyards Corp. of New York City. A report of tests of a DDT-oil 
fog in the Salt River Valley, Ariz.— Anon. (49); also Vorhies and 
Wehrle (364). 
Toxicology of DDT aerosols 
Reports on this subject are given in the section en PHARMACOLOGY 
by Neal (272 , 275 ) , and von Oe-ctingen _et a_l. (363 ) . 
USE OF DDT BY PEST CONTROL OPERATORS 
Since the general public lacks special knowledge of insects and con- 
trol materials and procedures, it seems logical to expect that the pest 
control operator will be called upon to an increasing extent to under- 
take this work. Therefore he should endeavor to keep informed of de- 
velopments from research on DDT insecticides.— Twinn (347 ). 
Pest control operators should have no fear that DDT will put them 
out of business.— Anon. (27); (15). 
At the third annual Canadian Pest Control Operators 1 conference at 
the University of Montreal, February 20, 1945, a program of cooperative 
research on DDT by the Canadian Department of Agriculture and the Canadian 
Pest Control Operators* Association similar to that in operation in the 
United States was discussed.— Anon. (46). 
At the ninth annual Pest Control Operators* conference held at Purdue 
University, January 15-19, 1945, Maj. Franklin Sherman of the U. S. Army 
Sanitary Corps, reported on the decontamination of enemy territory before 
our troops set foot upon it. In the Philippine campaign the island of 
Leyte was covered with DDT before the invasion commenced.— Anon. (15). 
REVIEWS AND POPULAR ARTICLES 
Reviews of information on DDT have been published by: 
Anon. (13), Bishopp (86), Buxton ( 100 ), Cox (123 ), Heilbron 
(205 ) 9 Wasioky and Unti (367 ) and West and Campbell ( 369 ). 
