FUMIGATION AGAINST GRAIN WEEVILS 29 
ume (equivalent to 79.1 per cent and 20.9 per cent by weight) gives 
off a highly inflammable vapor. The use of such a mixture to kill 
weevils or other insects is condemned as dangerous. 
A mixture of carbon tetrachloride and carbon disulphide containing 
as little as 5 per cent by volume of carbon disulphide will flash at 
20° C., although it will not continue to burn. 
BIO 
BOO 
73O 
700 
ca 
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sale RBA) ee ee oe OC 
5 ae ean 
ihe 
wy 
S 
N 
N 
LATPOR FRE SEUCE 177. (FIERCE 
on San ea ee 
= fa 0) 2/0220 GOZO 50 60 FO. 20 
VEIMFPLERATURE CT 
Fig. 1.—Vapor pressures of ethyl acetate and carbon tetrachloride (Table 9), 
