260 FUMIGATION METHODS 
used in mills, warehouses, and other enclosures with 
perfect safety. A reasonable amount of the vapor can 
be inhaled, while the liquid is being distributed in a 
building without injury to the operator. From per- 
sonal experience in making many practical applications 
of carbon bisulphid in buildings, the writer has never 
experienced any ill feeling or bad after-effects from 
the gas. The sense of smell is the first affected. If 
one is confined in a room where the gas is being gen- 
erated, for a short time the olfactory organs are 
benumbed or deadened. As the oxygen in the lungs 
becomes exhausted, the heart-throbs become more 
rapid. The mind becomes sluggish, while hearing and 
sight are weakened. ‘This is usually followed by dizzi- 
ness. ‘The sensation is not disagreeable, and a person 
has no immediate desire to get out of the gas. A 
person in this condition should leave the building being 
fumigated at once and freely inhale fresh air. 
Mr. W. E. Hinds, who has had some experience 
with the practical application of this gas, in a recent 
Farmers’ Bulletin (No. 145) by the United States De- 
partment of Agriculture, says: ‘‘ 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 persist 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 
