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done is absolutely air-tight, and that no fire of any sort is allowed 

 near the room or building during the process and until after the place 

 has been thoroughly aired. The resulting gas is so obnoxious that 

 there is little danger of poisoning by inhalation. Practically the only 

 danger in the use of this substance is the danger of fire, since it is 

 highly inflammable and explosive. The carbon bisulphid is used at 

 the rate of 1 pound of the liquid for every 1,000 cubic feet of space. 

 The treatment nia}^ be done just before nightfall, when no light will 

 be necessary, allowed to remain in the receptacle or room overnight, 

 and the container opened up and well aired the following morning. 



o 



