80 
EXPERIMENT NO. 42. 
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; very light breeze; light rain previous night. 
Temperature in car at beginning of experiment, 80° F. 
Relative humidity in car at beginning of experiment, 81 per cent. 
Time of exposure, 2 hours (11.20 a. m. to 1.20 p. m.). 
Temperature in car after opening and airing 15 minutes, 83° F. 
Relative humidity in car after opening and airing 15 minutes, 72 per cent. 
[ + means growth; — no growth.] 
Organism. 
Place of exposure in car. 
Result. 
B . coli communis . 
B . diphtheria? . 
B. yphosus . 
B. subtilis . 
B. tuberculosis 
Toilet room 
Smoking room 
Drawing-room 
Floor main sleeping compartment 
Berth, upper No. 2 ' 
Smoking room 
Drawing-room 
Floor main sleeping compartment 
Berth, upper No. 10 
Berth, lower No. 4 
Toilet room 
Smoking room 
Drawing-room 
Floor main sleeping compartment 
Berth, lower No. 9 
Smoking room 
Toilet room 
Drawing-room 
Berth, upper No. 4 
Smoking room 
Sputum exposed and injected into guinea pig; pig chloro- 
formed 103d day; increased 225 grams in weight; no lesions of 
tuberculosis. 
Floor of main sleeping compartment 
Sputum exposed and injected into guinea pig; pig chloro- 
formed 103d day; increased 260 grams in weight; no lesion of 
tuberculosis. 
Control pig died of tuberculosis 45th day. 
+ 
