-17- 
fire with such substances as ethylene :xide. Although its price 
is high, the snail quantities required render the cost of using it 
reasonable. It does not appear to affect the germinating power of 
cereals, but tests have not been carried far enough in this direc- 
tion to be conclusive. 
LEFESME, P. (64) 
The efficacy of methyl bromide in the disinfection of vegetables 
under partial vacuum. Acad. d'Agr. do France Compt. Rend. 24: 
783-787. 1938. [in French.] 
ITinety-minute exposure to 40 gri. per cubic meter of methyl 
bromide under a partial vacuum of 50 mm. of mercury will completely 
destroy Sitophilus granaria (L.), _S. cryza (L.), P hizoperth a 
domin ica (?.), Tribolium castaneum (Ebst. ), C-nathccerus cornutus 
\V. ), Try z a e p h i Tus slfFina men s i s~~~HL"» ), Laemophl oeus spp . , 5ruchus~ 
signaticcrnis Oyll., and EpTiestia kuehniella Zell. This dose car- 
be lowered to 30 gm. in some cases. 
LEPIGRE, A. (65) 
The disinfection of grains with mixtures of ethylene oxide and 
carbon dioxide. Soc. d' Encouragement. pour Indus. Nat. Bui. 
135: 385-462. 1936. [in French.] 
The use of methyl bromide as a fumigar.t for grain is discussed, 
It properties arc given end its action on man and higher animals is 
discussed, chiefly from the literature. The danger of its decompo- 
sition into hydrobromic acid in treated goeds is thought to bo con- 
siderable. Little is known cf its effect en wheat for milling, but 
its effect on the germination cf the grain is considered serious if 
a dosage of 6 ounces per 100 cubic feet of air is used. 
LINDGREN D. L. (66) 
Methyl bromide fumigation of ccdling-moth larvae. Jour. Scon. 
Ent. 29: 1174-1175. 1936. (Correction in Jour.. Econ. Ent. 
30: 381. 1937.) 
Five pounds of a mixture containing 3.4 percent by volume of 
methyl bromide and 96.6 percent of carbon dioxide per 100 cubic 
feet killed all the larvf.e buried in sacks. Methyl bromide is 
much more toxic to these larvae than hydrogen cyanide or carbon 
disulfide. 
(67) 
Methyl iodide as a fumigant, Jour. Econ. Ent. 31: 320. 1938. 
Tests with methyl iodide rn scale insects (Cocoldac), lody 
beetles (Coccincllidac ), crnfused flcur booties (Tried? um con- 
fusurn Dirv.), codling moth larvae (Carp* '] 1 ^ (L, ) ) , and 
some other insects indicate that tT r '~ " ~~~ ailiti 
as a fumigant. In tests on citrus scedlir .bovc 
the sc lethal to the insects won n< t toxic to the plants. 
