which an electric fan was kept running, a complete kill of 
Tyroglyph'us farinae Deg., including the eggs, wa/s obtained with 
a mixture of 6.3 percent of methyl bromide and 93.2 percent of 
carbon dioxide at rentes from 8 to 20 pounds per 1,000 cubic feet 
and at temperatures from 58° to 63° F. An unpleasant taste, 
which extended to about 1/4 inch below unwaxed and exposed parts 
of the surface of the cheese, completely disappeared after expo- 
sure to the air for 38 to 48 hours. Animals were apparently not 
affected by feeding on cheese 24 hours after fumigation. 
DbTOIR, M., FABRE, R. , and LiiXilll, F. (26) 
Poisoning Vith methyl bromide. Soc Med, des H6p. Paris, Bui. 
et Mem. 53: 1540-1554. 1937. [in French.] (Also in Bui. Sci. 
Pharmacol. 46: 15-26. 1939.) 
Dogs kept in an atmosphere containing 35 to 43 mg. of methyl 
bromide per liter went into narcosis and died shortly after. The 
bromine could be detected in the organs, especially in those rich 
in lipoids. The pathologic picture points to a vasomotor crisis. 
Efforts to counteract this effect with vasoconstrictor substances, 
especially adrenaline, were not successful. Glutathione is sug- 
gested as a stabilizer of the vasomotor system, 
EASTER, S. S. (27) 
Fumigation of sweetpotatoos with methyl bromide for control of the 
sweetpotato weevil-. Jour. Econ. Ent. 33: 921-926. 1940. 
Methyl bromide is extremely toxic to Cylas formicarius 
e lega ntulus (Summers), killing the insects even when they are 
deeply imbedded in the sweetpotatoos. It produces a deleterious 
effect on the sweetpotatoos, which may result in considerable loss. 
Careful handling, partial curing, and postfumigation heating of the 
sweetpotatoos will partially avoid this loss. 
FEIL, A. / (28) 
L' intoxication prof cssionello par 1c bromurc dc methyl c. Scmaine 
d' Hop. Paris 6: 599-601. 1930. 
The symptoms, diagnosis, and treatment of methyl bromide 
poisoning arc discussed. 
FISK, : F, % , and SEEPARD, ' H." H. ( 29 ) 
Laboratory studies of -methyl bromide as an insect fumigant. 
Jour, Econ. Ent. 31: ' 79-84. ' 1938. 
Methyl bromide is a promising new fumigant with boiling point 
(4,5° C.) lower than that of other fumigants. Its toxicity to in- 
sects compares favorably with that of hydrocyanic acid gas, chloro- 
picrin, and ethylene oxido. The granary weevil (Sitophilus granaria 
(1.)), the rice weevil (S. oryza (L.)), and the bean weevil 
(Acanthosc elides cbteotus (Say) j are about equally susceptible to 
methyl bromide, the concentration for 50 percent mortality after 5 
hours ranging from 4.0 to 6.1 mg, per liter. The adult confused 
flour beetle (Tribolium coxifusum Duv. ) requires 10.2 mg, per liter 
for 50 percent mortality; its eggs arc less resistant. Degree of 
absorption of the gases was determined by suspending a cage of test 
insects (Tribolium) above a 2-inch layer of vholc-whcat flour in 
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