FATE OF Trr.ERci.i-: I'ACII.I.I < )> 'TSIDK mi \\IMAL Honv 305 



C f> Continued 



Author Date 



Conditions 



Not killed Killed 



Kuss 7T 

 (continued) 



IveNoir and 

 Camus 83 



1908 



1908 



L/eNoir and 

 Camus 86 



1908 



dust obtained by the aspiration of 

 71 liters of air produced a tuber- 

 culous guinea pig" 



Series 3 Six of the 9 guinea pigs 

 exposed to the beatings and 

 sweepings of the two carpets of 

 Series 1 and 2, described above, 



became tuberculous 



Tuberculous sputum rich in tubercle 

 bacilli was mixed with dust a part 

 of which had been sterilized, 

 another part not sterilized, and 

 each mixed sample was dried in a 

 large open flask and kept in the 

 laboratory for 33 days. Each sam- 

 ple was inoculated into a series of 

 5 guinea pigs: 



Series i . Dust not sterilized. Three 

 of the 5 guinea pigs became tu- 

 berculous only in the lymphatic 

 glands near the point of inocula- 

 tion 1 



Series 2 Dust sterilized. Three of 



the 5 guinea pigs died of acute in- 

 fection; the other 2 had tubercu- 

 lous lymph glands near the point 

 of inoculation, and one of the two 



had a tubercle in one lung 1 



Again, the author examined dust 

 from a tuberculous hospital: 



Series 3. The dust was collected 

 from the cornice near the ceiling, 

 wash-board, window-sill, window- 

 seat, bed railings and floor. All 

 was thoroly mixed, divided into 

 two lots of .6 gram each, and 

 placed in two flasks. One flask 

 was protected from the light; the 

 other was exposed to diffused 

 light for 5 days and to sunlight 3 

 days. Each sample was inocu- 

 ulated into a series of 5 guinea 

 pigs. In each case only one of 

 the 5 test animals became tuber- 

 culous. 



Series 4. Four grams of dust were 

 collected and treated as in Series 

 1. In this series 2 of the guinea 

 pigs died of acute infection and 

 3 remained healthy. 



Series 5 Dust was collected and 

 treated as in Series 1. 0.7 grams 

 of the dust was placed in each of 

 two flasks. The first was exposed 



days 



6 to 13 

 days 



33 



33 days 



J The tuberculosis may have been produced from dead tubercle bacilli. 



