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established by the Surgeons General of the two services.— U. S. Army 
and U. S. P. H. S. (351). 
The use of DDT by troops during an invasion to control mosquitoes, 
flies, and other insect vectors of diseases is discussed • — Logue and 
O'Connell (248). 
Kaolin containing 1 percent of DDT was dusted on sheets of paper 
on which mosquitoes were separately placed and covered with a beaker. 
The time, in minutes, to partial paralysis was 20, to total paralysis 
60 to 70, and to death 170-190. Tflhen 1 percent of DDT in kerosene-tung 
oil mixture was spread on water it killed mosquito larvae in 40 to 50 
minutes*— Sen (311 ) ♦ 
Itonididae 
ftphidoletes sp* 
Cucumbers heavily infested with aphids were sprayed with 16 ounces 
of DDT per 100 imperial gallons of water, both in powder suspension and 
in Velsicol emulsion, and counts showed no apparent reduction in tie 
large numbers of Aphidoletes larvae present*— Ross (506 ) • 
Diarthronomyia hypogaea (Loew) , the chrysanthemum gall midge 
Several hundred cuttings of 15 to 20 varieties and small plots of 
2 varieties were sprayed* Cuttings were sprayed twice at 10-day inter- 
vals and plants were sprayed four times at 5- to 7-day intervals. The 
spray contained 5 pounds of a 20 percent DDT-pyrophyllite dust plus 0.5 
peroent Vatsol OS in 100 gallons. On cuttings after treatment, 0.64 
new gall per plant appeared as oompared with 24.2 galls on untreated 
plants. Larvae and pupae in galls were not affected and newly emerged 
adults lived long enough to lay eggs. On newly set plants excellent 
control was obtained and no plant injury was apparent after 10 weeks. 
— N. J. Agr. Expt. Sta. (275 ). 
Monarthropalpus buxi (Lab.), the boxwood leaf miner 
This pest was readily controlled with DDT (0.1 to 1 peroent) 
applied as an emulsion in small-scale tests.— Craighead and Brown ( 125 ) • 
ltaseidae 
Glossina spp. 
Glossina spp. are readily killed by traces of DDT on oloth. This 
operas up great possibilities of control, by treating bait animals with 
