80 



considered more in detail at another point.) After about 146 pounds 

 of CS 2 had been exposed, occupying from fifteen to twenty minutes, 

 the fumes had become so dense that we were forced to withdraw. 

 The building- was then carefully locked and left for twenty-two hours. 

 People passing on the street at the time the exposure was being made 

 and those having business in adjoining rooms complained of the exceed- 

 ingly disagreeable odor, but at a visit to the premises later in the day 

 the writer could detect but very slight traces of the odor on the street, 

 even close to the door. No guard remained near the building during 

 the day. 



On Monday morning, at 1.45. the store was opened for ventilation. 

 The density of the fumes had greatly diminished, but a watch was 

 kept to see that no one passed close to the door with a lighted cigar 

 until the fumes had mostly disappeared. In forty-live minutes the 

 store was so well aired that but little of the disagreeable odor 

 remained, though for several days slight traces of the odor lingered 

 in the room. 



An examination of many boxes of the infested stock on the lower 

 floor disclosed many dead beetles, but no living ones. Unopened boxes 

 of stock in the gallery were examined, and these showed only about 

 one live beetle to every one hundred dead ones. So far as could be 

 determined at the time, the treatment was very successful, and the 

 proprietor expressed himself as very well pleased with the result. 



The suggestion was made that future trouble with the cigarette 

 beetle might probably be avoided by treating incoming stock with OS a 

 in a quarantine chamber before placing it in the sales room. In the 

 basement the writer was shown a large, zinc-lined, air-tight box. hav- 

 ing 18 cubic feet capacity, which has been used as a moistening cham- 

 ber. Upon being assured that this was an admirable thing for a 

 quarantine box. the proprietor declared it his purpose to adopt the 

 suggestion and treat all new or suspected old stock in this way. 



DAXGERS IX USE OF CARBOX BISULPHIDE. 



It is customary when anything is written concerning the use of this 

 very volatile and highly inflammable liquid to emphasize the danger 

 from fire in the presence of the fumes, and it is usually pointed out 

 particularly that even alighted cigar may cause a disastrous explosion. 

 The writer has also seen printed mention of the danger of liberating 

 the fumes in the presence of heated steam pipes. So it seems that a 

 brief mention of a few other points of danger may not be out of place 

 here. 



No electric fan should be allowed to run in the presence of the fumes, 

 as it is liable to give ofl occasional sparks. For the same reason there 

 would be danger in turning on an incandescent light, and though the 

 danger in turning out such a light i>- less than in turning it on. there 

 is still too much chance of forming some connection which would pro- 



