at 
of course are its extreme effects. In the ordinary use of carbon 
bisulphid on a large scale, as in the fumigation of mills, warehouses, 
ete., where the worker may be more or less exposed to the inhalation 
of the fumes for some time, only those effects which precede giddiness 
are likely to be experienced. From his own experience and informa- 
tion obtained from others who have used carbon bisulphid in such 
work, the writer gleans the following as the effects preceding giddiness: 
The first appreciable effect is upon the sense of smell. At first the 
fumes have an extremely disagreeable odor, but this soon seems 
eradually to disappear, showing that the sense of smell becomes 
deadened. The other senses seem to become benumbed simultaneously, 
so that the operator does not realize that anything is the matter with 
him. The heart beat becomes more and more rapid as the oxygen in 
the lungs diminishes. The power of thought is very much weakened: 
and the work is continued in a mechanical sort of way. Hearing an& 
sight are also weakened. But before this weakening process has gone 
far enough to be really dangerous or injurious, the operator will prob- 
ably feel more or less dizziness. There is no pain or disagreeable 
sensation; no desire to get out of it, and no sense of suffocation. But 
when a person has reached this condition it is high time to get out into 
the fresh air where the ill effects will quickly disappear. Owing to 
the effect of the gas upon the heart action, it may be well to caution 
persons having any trouble or weakness about the heart against taking 
any extended part in the application of the bisulphid. It should be 
clearly understood by those who use it that the action of the gas is 
somewhat poisoning as well as suffocating. Should the operator per- 
sist in remaining in the room after the dizziness comes on, he will be 
in danger of falling, and, if not discovered, he will soon suffocate. 
Even if he should get out safely, the ill effects will be more marked 
and a severe headache, at least, may 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 in a few minutes remove all 
ill effects, and no injury will result from the experience. The inhala- 
tion of the fumes can be somewhat retarded by tying a wet handker- 
chief tightly over the face. This, however, merely diminishes the 
amount of air taken into the lungs without affecting the proportion of 
vapor contained therein. When obliged to enter a room in which the 
air is charged with any considerable amount of the vapor, the writer 
makes use of the following simple device, which is perfectly effectual: 
A large paper bag (20 quarts or more) is tied tightly around a short 
piece of tubing of glass, rubber, or metal, inserted in its mouth. 
When infla ed, 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. 
