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more than 5 pounds per car, with an exposure of 2 hours. Twenty 
c:.rs of mixed fruit (pears, plums, and peaches) were also treated 
without injury, as were 5,000 boxes of apples consigned to Hawaii. 
The same method was used in treating 5,310 boxes of winter pears 
to destroy the mealybug Pseu dococcus marit imus (Ehrh, ). 
MALLET, M. . (84) 
Insecticides for agricultural products. French Patent 747,798, 
June 25, 1933. 
Agricultural fumigants contain a considerable amount of methyl 
bromide, which is not only toxic to insects but has fireproofing 
properties, permitting the addition of inflammable products to the 
liquid -with safety. Carbon tetrachloride may be added to lower the 
vapor pressure. 
McLAINE, L. Si, and MUHRO, H. A. U. (85) 
Developments in vacuum fumigation at the port of Montreal. Ent. 
Soc. Ontario, Ann, Rpt. 67: 15-17. 1936. 
A proprietary fumigant containing approximately 7 percent of 
methyl bromide and 9 3 percent of carbon dioxide killed European 
corn borer larvae when used at the rate of 40 pounds per 1,000 
cubic feet for 90 minutes. A 2-hour exposure at the same rate 
gave complete mortality of apple maggots and codling moth larvae 
in the centers of infested apples. Analysis of vegetables and 
fruits fumigated with the mixture under experimental conditions 
showed that to a very limited extent the methyl bromide reacted 
with the plant material to give a ■water- soluble bromine compound. 
MEIXEER, K. (86) 
Vergiftung durch Dampfe des Fcuerloschmittcls Polein (Kcthyl- 
bromid). Bcitr, z. G-crichtl. Med. 8: 10-17. 1928. 
A workman employed in filling fire extinguishers with this 
liquid was fatally poisoned by the fumes. Convulsions and marked 
cyanosis preceded death. Autopsy showed lung edema and an early 
stage of brain edema. 
MERZBACH, L. (87) 
Zur Pharmakologic des Brornmcthyls und einiger seiner Verwandtcn. 
Ztschr. f. die Gesam. Expt. Mod. 63: 383-392. 1928. 
Dogs wore killed by exposure to 0.00009-0.00054 mole of methyl 
bromide per liter. Marked edema of the lungs was produced. A con- 
centration of 0.000036 mole per liter was not fatal. Exposure of 
carp [Moorkarpfen] to 2.139 gm. of methyl bromide in 1,000 cc. of 
water caused narcosis in 1G minutes, .but 1.8373 gm. caused no nar- 
cosis after 20 minutes. Exposure of isolated frog hearts to 6.5115 
gm. in 1,000 cc. of Ringer solution produced a diastolic stoppage, 
although the heart recovered spontaneously; with 5,7975 gm. in 
1,000 cc. there was no stoppage, but the amplitude was less and the 
.frequency reduced. 
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