FUMIGATION WITH CARBON BISULPHID 261 
more marked and a severe headache, at least, might 
ensue. If upon the approach of dizziness, the operator 
goes at once to a window, or better still out of doors, 
an abundance of fresh air will ina few minutes remove 
all ill effects, and no injury will result from the experi- 
ence. ‘The inhalation of the fumes can be somewhat 
retarded by tying a wet handkerchief tightly over the 
face. ‘This, however, merely diminishes the amount of 
air taken into the lungs without affecting the propor- 
tion of vapor contained therein.’’ 
When obliged to enter a room in which the air is 
charged with any considerable amount of vapor, Mr. 
Hinds makes use of the following simple device, which 
is perfectly effectual: A large paper bag holding 20 
quarts or more is tied tightly around a short piece of 
tubing of glass, rubber, or metal. When inflated, 
the bag contains sufficient air to enable one to respire 
into it for several minutes without discomfort. Being 
very light, it can be carried by the tube in the mouth, 
thus leaving the hands free for any work desired. 
Carbon bisulphid can be handled with much greater 
safety and far less fear than is possible where the user 
knows there is danger but does not know just what the 
danger is. The danger from its use is practically of 
the same kind as that from gasoline, which is in com- 
mon daily use. ‘The danger is very much less, how- 
ever, since every precaution is taken to keep carbon 
bisulphid from the proximity of fire, while gasoline is 
used principally in connection with it. 
Commercial uses.—Although the insecticide proper- 
ties of carbon bisulphid were discovered by Doyere in 
1856, and tested three years later by Baron Paul Thé- 
