-25- 
PEPELIS," W. J. (96) 
Bromine tion of saturated aliphatic hydrocarbon gases. Indus, and 
Engin. Chem. , Indus. Ed. 25: 1160-1161. 1933. 
The .method described uses a low bromine concentration in the 
presence of iron powder at 290°-370° C. Methyl bromide was ob- 
tained by this means from methane. 
PETERS., G. (97) 
The biological-chemical evaluation of gaseous insecticides. Anz. 
f. Schadlingsk. 14: 116-122. 1938. [in German.] 
Data on the boiling point, specific heat, heat of vaporization, 
and saturation limit at 20° C. are given for a number of gaseous in- 
secticides, including methyl bromide. The vapor density, molecular 
weight, and explosion limits are also given. The most important 
factors in fumigation are gas concentration and time. 
PETRI, E. • (98) 
Pathologische Anatomic und Histologic dor Vcrgif tungen. In Henke, 
F. , and Lubarsch, 0. Handbuch der Speziellen pathologischen 
Anatomic und Histologie. v. 10, pp. 272-273. Berlin. 1930. 
The symptoms and pathology of methyl bromide poisoning are re- 
viewed from various literature sources. 
PHILLIPS, W. R., and MUNRO, K. A. U. (9 9) 
Methyl bromide injury to apples. Jour. Econ. Ent. 32: 344. 1939. 
Although fumigation with methyl bromide was previously repor- 
ted as injuring apples, later investigations gave different results , 
With a dose of 2.5 pounds per 1,000 cubic feet for 90 minutes 'in a 
vacuum vault and 80° F., only two of seven apple varieties were in- 
jured. 
MUNR0, H. A. U. , and ALLEN, C. E. (100) 
Some observations on the fumigation of apples with methyl bromide. 
'Sci. Agr. 19: 7-20. 1938. 
The standard treatment was found to be lethal to insects feed- 
ing internally in apples. The residue of bromide was so slight as 
to be harmless to human beings. Under certain conditions, however, 
methyl bromide caused both internal and external injury to the 
apples. No injury resulted, however, when the apples were picked 
at tho proper stage of maturity and stored for 6 weeks at 32° or 
39° i'. , and standard treatment was used. The damage, thercforo, 
appears to bo physiological rathor than mechanical. 
PIPER, W. R., Jr., and DAVIDSON, R. H. (101) 
Mothyl bromide vapor against five species of stored product in- 
sects. Jour. Econ. 'nt. 31: 460-461. 1938. 
Fumigation tests at atmospheric pressure and various room tem- 
peratures, concentrations and exposure periods were made on 
adults of Sitophilus granaria (L.) and Acan chosccl ides o >Uc t~us 
(Say), larvae of Trogo derma versicolor Crcutz., ] ts 
