87 
EXPERIMENT NO. 49. 
Formalin 2,000 c. c., permanganate 1,000 grams, equally distributed in four galvanized-iron buck- 
ets, two of which were placed in the main sleeping compartment of car and one in the alleyway 
at each end. 
Weather: Clear, light southerly wind. 
Temperature in car at beginning of experiment, 75.5° F. 
Relative humidity in car at beginning of experiment, 56 per cent. 
Time of exposure, 2 hours (1.10 p. m. to 3.10 p. m.) . 
Temperature in car after opening and airing 15 minutes, 77.5° F. 
Relative humidity in car after opening and airing 15 minutes, 47 per cent. 
[+ means growth; — no growth.] 
Organism. 
Place of exposure in car. 
Result. 
R. r.nli communis 
Toilet room 
Drawing-room 
Smoking room 
+ 
Berth, upper No. 8 
Berth, lower No. 4 
+ 
B. diphtherix 
Toilet room 
Drawing-room 
Smoking room 
4- 
Berth, upper No. 9 
+ 
Berth, lower No. 4 
B. typhosus 
Toilet room 
Smoking room 
Drawing-room 
Berth, upper No. 9 
Berth, lower No. 4 
+ 
B. subtilis 
Toilet room 
+ 
Smoking room 
+ 
Drawing-room 
+ 
Floor, main sleeping compartment 
+ 
Berth, upper No. 10 
+ 
