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extensive to include all the infested stock or that it was not thorough 
enough to destroy all the beetles in what was treated. This partial 
treatment was, however, sufficiently successful to satisfy the propri- 
etors that if used in a sufficiently large quantity and so as to include 
the entire stock, carbon bisulphide would eradicate the pest. They 
had, therefore, made preparations to thoroughly fumigate the whole 
establishment, applying more than double the quantity of the insecti- 
cide that is usually recommended in such work. They desired to clean 
out the beetles at any cost and preferred to use an excessive amount 
of bisulphide rather than be obliged to repeat the treatment. Accord- 
ingly, they had provided 200 pounds of CS, and about 35 shallow tin 
pans about 3 feet long by 1 foot wide and 1 inch deep. At the writer’s 
suggestion, an additional supply of evaporating pans was obtained. 
Over fifty of these large pans were distributed around the room in as 
high positions as possible, and a number were placed on top of the 
stock stored around the gallery. The stairway and elevator shaft lead- 
ing to the basement were tightly closed and the worst infested stock 
was opened and the boxes spread around upon the lower floor. The 
cans of bisulphide were distributed and everything done to facilitate 
rapid work in the application of the liquid. Owing to the slight danger 
of generating a spark in turning off the incandescent lights which it 
would be necessary to have if the application were made at night, it 
was thought best to defer the exposure of the liquid till early on Sun- 
day morning, July 14. (The dangers connected with the use of carbon 
bisulphide will be spoken of more fully at another place in this report.) 
Soon after 6 o’clock on Sunday morning the work of pouring the 
bisulphide into the pans was begun simultaneously by the six persons 
(including the writer) present. Each pan received from 2 to 3 pounds 
of the liquid. The pans ina vault and the show window and in the 
wall show cases were filled first and the doors to those compartments 
were then closed to retard the fumes. Otherwise the doors to show 
cases and closets and the drawers were all left slightly ajar to allow 
the unhindered entrance of the fumes. The pans around the sides of 
the rooms under the gallery were placed so high that a 5 or 6 foot 
stepladder had to be used to reach most of them. As only one such 
ladder was at hand, the work was somewhat delayed at this point, and 
all lower pans on goods along the middle of the floor and on show cases 
were filled before the work on the higher pans could be completed. In 
the meantime the pans in the gallery were being filled and the fumes 
on the lower floor were becoming very dense. The air supply had 
become insufficient for the workers, and instructions were given to 
each man to go outdoors as soon as he began to feel dizzy. This 
most of them did, and after a few refreshing breaths they were able 
to return to the work; but one or two did not leave the room until the 
work was finished. (The effects of the gas upon the operator will be 
